CN110671011B

CN110671011B - Door body

Info

Publication number: CN110671011B
Application number: CN201910805765.5A
Authority: CN
Inventors: 王亚军; 刘越; 王文文
Original assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2023-08-18
Anticipated expiration: 2039-08-29
Also published as: CN110671011A

Abstract

The utility model provides a door body, which comprises a door frame with an opening, a door panel used for opening or closing the opening, two first rotating connecting mechanisms used for rotationally connecting a first end of the door panel to the door frame, two second rotating connecting mechanisms used for rotationally connecting a second end of the door panel opposite to the first end to the door frame, and a double-door mechanism used for enabling the door panel to open the opening from the first end or the second end.

Description

Door body

Technical Field

The utility model relates to the field of door body structures, in particular to a door body capable of preventing a door panel from falling off and opening a door in two directions.

Background

The traditional door body is generally of a one-way door opening structure, namely one side of a door panel is rotationally connected with a door frame through a fixed rotating shaft, and the door panel can only be opened from one side without the fixed rotating shaft, so that the door body has great limitation in use, for example, in the door opening process, the problem of collision between the door panel and a wall and the like needs to be considered, and the placing position of furniture or household appliances and the like with the door body is limited.

The Chinese patent No. CN2340866Y discloses a left-right door opening mechanism, which consists of four door supports which are telescopic at four corners of a door and a group of parts for controlling the linkage of the four door supports, wherein a small wheel which can be touched by extending hands is arranged at the upper end and the lower end or at the left side and the right side of the door, and the door opening direction can be changed by slightly shifting the small wheel by hands. However, the structure is complex and the operation is inconvenient; moreover, the situation that the four telescopic door supports are separated from the door frame and the door is separated from the door frame is caused by the fact that the steering direction is wrong is very likely to happen, and certain potential safety hazards exist.

The Chinese patent No. CN205370316 discloses a double fixed rotating shaft side hung door, four telescopic rotating shafts (or telescopic lock catches) which can be telescopic are arranged on four corners of a door leaf, the rotating shaft lock catches (or rotating shafts) are arranged on a door frame, and two groups of multifunctional handles are additionally arranged to respectively drive the telescopic rotating shafts on one side to stretch. When the door is closed, the two groups of telescopic rotating shafts are locked by the rotating shaft lock catches. When the door is opened, the multifunctional handle on the corresponding side is pulled, the telescopic rotating shaft on the corresponding side is separated from the lock catch through force transmission, the door leaf can be opened around the other group of rotating shafts, and the multifunctional handle on the other side is pulled to separate the corresponding rotating shaft from the lock catch of the rotating shaft, so that the door leaf can be opened in the opposite direction, and the left and right door opening selectivity is facilitated; however, in the process that the door body is opened around one end, a user is likely to operate another multifunctional handle by mistake, so that the four telescopic rotating shafts are separated from corresponding rotating shaft lock catches, the door leaf is separated, and certain potential safety hazards exist.

In view of the foregoing, it is desirable to provide a new door body that solves the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a door body which can prevent a door panel from falling off and can open a door in two directions.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme: the utility model provides a door body, includes has open-ended door frame, is used for opening or closes open-ended door panel, will the first end of door panel rotate connect in two first rotation coupling mechanism on the door frame, will the door panel with the second end that the first end is relative rotates connect in two second rotation coupling mechanism on the door frame, make the door panel can be opened from first end or second end open-ended double door mechanism, first rotation coupling mechanism with second rotation coupling mechanism all includes locating the pivot and the shaft hole of mutually supporting between door frame and the door panel, locates the pivot with limit structure between the shaft hole, limit structure is used for in the in-process that the door panel rotated, the restriction is located the rotation end and locates pivot or the shaft hole on the door panel inwards move.

As a further improved technical scheme of the utility model, the limiting structure comprises an annular groove arranged on one of the rotating shaft and the shaft hole, a guide groove communicated with the annular groove and extending along the axial direction of the rotating shaft or the shaft hole, and a protrusion arranged on the other one and matched with the annular groove and the guide groove, wherein the guide groove is used for guiding the protrusion to enter the annular groove or guiding the protrusion to be far away from the annular groove so as to separate the corresponding rotating shaft from the shaft hole.

As a further improved technical scheme of the utility model, the annular groove is recessed outwards along the circumferential direction of the annular groove from the inner side of the shaft hole, and the guide groove is positioned at one side of the annular groove, which is close to the rotating shaft; the bulge is arranged on the rotating shaft.

As a further improved technical scheme of the utility model, when the door panel is in a closed state, the protrusions are positioned in the guide grooves; the double door mechanism comprises a lever which is in linkage with the first rotary connecting mechanism and the second rotary connecting mechanism which are positioned on the same side, and the lever is rotatably connected to the door panel.

As a further improved technical scheme of the utility model, the shaft hole is arranged on the door frame, and two ends of the lever are respectively connected to the rotating shafts in the first rotating connecting mechanism and the second rotating connecting mechanism which are positioned on the same side.

As a further improved technical scheme of the utility model, the lever is sleeved on the rotating shaft, and the rotating shaft is also provided with a limiting piece for limiting the lever to move along the axial direction of the rotating shaft relative to the rotating shaft.

As a further improved technical scheme of the utility model, the limiting piece comprises two nuts which are connected to the rotating shaft in a threaded manner, and the two nuts are respectively positioned on two opposite sides of the lever along the axial direction of the rotating shaft.

As a further improved technical scheme of the utility model, the double door mechanism further comprises a first driving piece which is positioned at a first end to drive the rotating shafts in the two first rotating connecting mechanisms to be separated from the shaft holes, and a second driving piece which is positioned at a second end to drive the rotating shafts in the two second rotating connecting mechanisms to be separated from the shaft holes.

As a further improved technical scheme of the utility model, one of the rotating shaft and the shaft hole is arranged on the door frame; the first driving piece and the second driving piece comprise two push-pull rods connected to the other one of the rotating shaft and the shaft hole, and handle pieces used for driving the two push-pull rods to move oppositely, and the two push-pull rods extend oppositely along the axial direction of the rotating shaft.

As a further improved technical scheme of the utility model, the handle piece comprises two handle rods which are connected in a crossed and rotating way, and one ends of the two push-pull rods, which are close to the handle piece, are respectively connected with the two handle rods.

The beneficial effects of the utility model are as follows: the first rotating connecting mechanism and the second rotating connecting mechanism in the door body are provided with the limiting structure between the rotating shaft and the shaft hole, the limiting structure is used for limiting the rotating shaft at the rotating end to be separated from the shaft hole inwards along the axial direction of the rotating shaft in the process of rotating the door panel, namely, the rotating shaft at the rotating end cannot be separated from the shaft hole in the process of rotating the door panel, so that the rotating shafts at the first end and the second end can be prevented from being separated from the shaft hole, the purpose of preventing the door panel from falling off from the door frame is achieved, and the door body can be safely opened and closed from the first end or the second end and has a simple structure.

Drawings

Fig. 1 is a schematic view of a door body according to the present utility model.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is an enlarged view at B in fig. 2.

Detailed Description

The present utility model will be described in detail with reference to the embodiments shown in the drawings, and reference is made to fig. 1 to 4, which are preferred embodiments of the present utility model. It should be understood that these embodiments are not intended to limit the present utility model, and that functional, method, or structural equivalents and alternatives falling within the scope of the present utility model may be modified by any person skilled in the art to include such embodiments.

In the description of the present utility model, it should be understood that words of "upper," "lower," "left," "right," and the like, which indicate an orientation or a positional relationship, are used merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the present specification, unless clearly specified and limited otherwise, the terms "connected," "provided," and the like should be construed broadly, and for example, the connection may be a direct connection or an indirect connection via an intermediate medium, and may be a fixed connection or a detachable connection or an integral connection; the arrangement may be direct or indirect via an intermediary. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 4, the present utility model provides a door body 1, and the door body 1 can be applied to furniture or household appliances. The door body 1 comprises a door frame 11 with an opening 111, a door panel 12 for opening or closing the opening 111, two first rotary connecting mechanisms 13 for rotationally connecting a first end of the door panel 12 to the door frame 11, two second rotary connecting mechanisms 14 for rotationally connecting a second end of the door panel 12 opposite to the first end to the door frame 11, and a double door opening mechanism 15 for enabling the door panel 12 to open the opening 111 from the first end or the second end, wherein the first rotary connecting mechanisms 13 and the second rotary connecting mechanisms 14 comprise a rotary shaft 16 and a shaft hole 17 arranged between the door frame 11 and the door panel 12.

The first end of the door panel 12 is rotatably connected to the door frame 11 through two sets of matched rotating shafts 16 and shaft holes 17 at the first end; the second end of the door panel 12 is rotatably connected to the door frame 11 by two sets of cooperating shafts 16 and shaft holes 17 at the second end.

It can be appreciated that one of the rotating shaft 16 and the shaft hole 17 is disposed on the door frame 11, the other is disposed on the door panel 12, and the rotating shaft 16 or the shaft hole 17 disposed on the door panel 12 is movably connected with the door panel 12 relatively, so that the door panel 12 can be opened from the first end by driving the rotating shaft 16 at the first end to separate from the shaft hole 17 through the double door opening mechanism 15, or the rotating shaft 16 at the second end is driven to separate from the shaft hole 17, so that the door panel 12 can be opened from the second end.

It should be understood that, when the shaft hole 17 is provided on the door panel 12, a shaft sleeve for forming the shaft hole 17 needs to be additionally provided, so that the shaft hole 17 is movably connected to the door panel 12, and this structure is conventional and will not be described herein.

It will be appreciated that after the double door mechanism 15 has disengaged the shafts 16 of the two second rotary linkages 14 from the shaft holes 17, the door panel 12 can be rotated about the first end to open the opening 111 from the second end; after the two door opening mechanisms 15 disengage the shafts 16 of the two first rotation connection mechanisms 13 from the shaft holes 17, the door panel 12 can be rotated about the second end to open the opening 111 from the first end.

The structure of the door body 1 according to the present utility model will be described specifically by taking the case where the shaft hole 17 is provided in the door frame 11 and the rotation shaft 16 is movably provided in the door panel 12 as an example.

Specifically, the door frame 11 includes a frame body 112 configured to cooperate with the door panel 12, a decorative board 113 disposed at an end of the frame body 112, and the shaft hole 17 is disposed through the frame body 112, where the decorative board 113 is configured to shield one end of the shaft hole 17 away from the door panel 12, and meanwhile, the decorative board 113 can limit the shaft hole 17 that the rotating shaft 16 is separated from the corresponding shaft hole 17 axially outward along the shaft hole, so as to enhance stability of connection between the door panel 12 and the door frame 11, and stability of rotation of the door panel 12.

In an embodiment, the door body 1 is disposed vertically, the first end is a left end, the second end is a right end, so as to realize that the door body 1 can be opened in a left-right direction, that is, the door panel 12 can selectively open the opening 111 from the left side or the right side, at this time, the two first rotating connection mechanisms 13 located at the first end are located at the upper left corner and the lower left corner of the door body, the two second rotating connection mechanisms 14 located at the second end are located at the upper right corner and the lower right corner of the door body 1, and the axial directions of the rotating shaft 16 and the shaft hole 17 are all extended along the up-down direction. Of course, this is not a limitation.

Further, the first rotating connection mechanism 13 and the second rotating connection mechanism 14 further include a limiting structure 18 disposed between the rotating shaft 16 and the shaft hole 17, where the limiting structure 18 is used to limit the rotating shaft 16 at the rotating end from being separated from the corresponding shaft hole 17 during the rotation of the door panel 12, that is, the rotating shaft 16 at the rotating end and the shaft hole 17 will not be separated from each other during the rotation of the door panel 12, so that the rotating shafts 16 at the first end and the second end can be prevented from being separated from the shaft hole 17, and the purpose of preventing the door panel 12 from falling off from the door frame 11 is achieved, so that the door panel 12 can be safely opened and closed from the first end or the second end.

In the embodiment in which the shaft hole 17 is provided on the door frame 11, the limiting structure is configured to limit the inward movement of the rotating shaft 16 at the rotating end, that is, limit the retraction of the rotating shaft 16 at the rotating end, so as to prevent the rotating shaft 16 from being separated from the corresponding shaft hole 17.

It should be noted that the above inward movement, i.e., the movement directed toward the center of the door body 1, and the outward movement, i.e., the movement directed away from the center of the door body, are correspondingly performed.

In the embodiment where the shaft hole 17 is provided in the door frame 11, the limiting structure 18 is configured to limit the inward movement of the rotating shaft 16 at the rotating end during the rotation of the door panel 12, so as to prevent the inward movement of the rotating shaft 16 from being separated from the shaft hole 17.

It can be understood that when the door panel 12 rotates around the first end, the first end is the above-mentioned rotating end, at this time, the rotating shafts 16 in the two second rotating connection mechanisms 14 are separated from the corresponding shaft holes 17, and meanwhile, in the process of rotating the door panel 12, the rotating shafts 16 in the two first rotating connection mechanisms 13 and the corresponding shaft holes 17 are enabled to rotate around the shaft holes 17 only under the action of the limiting structure 18, so that the rotating shafts 16 cannot move inwards along the axial direction thereof, i.e. cannot be separated from the shaft holes 17, thereby preventing the rotating shafts 16 in the first rotating connection mechanisms 13 from being separated from the shaft holes 17 under the action of external force and preventing the door panel 12 from falling off from the door frame 11; when the door panel rotates around the second end, the second end is the rotating end, at this time, the rotating shafts 16 in the two first rotating connecting mechanisms 13 are separated from the corresponding shaft holes 17, meanwhile, in the process of rotating the door panel 12, under the action of the limiting structure 18, the rotating shafts 16 in the two second rotating connecting mechanisms 14 and the corresponding shaft holes 17 enable the rotating shafts 16 to rotate around the shaft holes 17 only, cannot move inwards along the axial direction of the rotating shafts, namely cannot be separated from the shaft holes 17, so that the rotating shafts 16 in the second rotating connecting mechanisms 14 are prevented from being separated from the shaft holes 17 under the action of external force, the door panel 12 is prevented from falling off from the door frame 11, and the door panel 12 can be safely opened and closed from the first end or the second end.

Further, the limiting structure 18 includes an annular groove 181 provided on one of the shaft hole 17 and the shaft 16, a guide groove 182 connected to the annular groove 181 and extending along the axial direction of the shaft hole 17 or the shaft 16, and a protrusion 183 provided on the other and cooperating with the annular groove 181 and the guide groove 182, wherein the guide groove 182 is used for guiding the protrusion 183 to move into the annular groove 181, thereby limiting the corresponding shaft 16 to move away from the shaft hole 17 or guiding the protrusion 183 away from the annular groove 181 along the axial direction thereof, so as to separate the shaft 16 from the shaft hole 17.

When the door panel 12 is in the closed state, the protrusion 183 is located in the guide groove 182 or in the annular groove 181 at a position corresponding to the guide groove 182, so that the rotation shaft 16 is directly acted on the rotation shaft 16 by the double door mechanism 15 to move the protrusion 183 inwards along the guide groove 182, and the rotation shaft 16 can be separated from the shaft hole 17.

It can be understood that, for the first rotary connecting mechanism 13 and the second rotary connecting mechanism 14 located at the upper ends, the above inward movement means that the double door mechanism 15 drives the rotating shaft 16 to move downward along the axial direction thereof, so as to be separated from the corresponding shaft hole 17; for the first rotary connecting mechanism 13 and the second rotary connecting mechanism 14 at the lower ends, the inward movement means that the double door mechanism 15 drives the rotating shaft 16 to move upwards along the axial direction thereof, so that the rotating shaft can be separated from the corresponding shaft hole 17.

In the process of rotating the door panel 12, the protrusion 183 at the rotating end rotates along the annular groove 181, and the step surface 1811 of the annular groove 181 abuts against the protrusion 183, so that the rotating shaft 16 can be limited to move inwards along the axial direction of the protrusion, and even if a user misoperates the double door opening mechanism 15 corresponding to the rotating end, the rotating shaft 16 cannot be separated from the corresponding shaft hole 17 inwards, so that the rotating shaft 16 at the rotating end is prevented from being separated from the shaft hole 17 under the action of external force, and the door panel 12 is prevented from falling off from the door frame 11.

In one embodiment, the annular groove 181 is disposed in the shaft hole 17, and the annular groove 181 is formed by recessing from the inner side of the shaft hole 17 along the axial direction thereof, and the guide groove 182 is disposed at the inner end of the annular groove 181; the protrusion 183 is disposed on the rotating shaft 16, and protrudes outward from the outer surface of the rotating shaft 16 along the radial direction thereof. Of course, this is not a limitation.

Specifically, the guide slot 182 is located at an end of the shaft aperture 17 remote from the door panel 12. The rotating shaft 16 has a connecting end connected with the double door mechanism 15 and a free end opposite to the connecting end, and the protrusion 183 is located at the free end.

In one embodiment, the protrusion 183 is positioned within the channel 182 when the door panel 12 is in the closed position, and it is understood that the protrusion 183 at the rotating end may be moved outwardly along the channel 182 into the annular groove 181 prior to rotating the door panel 12 to rotate the door panel 12.

Further, the double door mechanism 15 includes a lever 151 that links the first and second rotary linkages 13 and 14 on the same side, and the lever 151 is rotatably connected to the door panel 12.

In the embodiment in which the shaft hole 17 is provided in the door frame 11, one end of the lever 151 is connected to the rotating shaft 16 in the first rotating connection mechanism 13, the other end is connected to the rotating shaft 16 in the second rotating connection mechanism 14 located on the same side, and the rotating shafts 16 located at both ends of the lever 151 can move in opposite directions simultaneously, that is, the rotating shafts 16 are indirectly provided in the door panel 12 through the lever 151.

It will be appreciated that the double door mechanism 15 includes two levers 151, and one lever 151 is used to link the first rotary connection mechanism 13 and the second rotary connection mechanism 14 located at the upper end; the other lever 151 is used to link the first rotary connecting mechanism 13 and the second rotary connecting mechanism 14 at the lower end.

The working principle of the lever 151 will be specifically described below taking the case that the door panel 12 needs to be opened from the second end; it will be appreciated that the lever 151 operates in the same manner when the door panel 12 is required to be opened from the first end, and will not be described again.

When the door panel 12 needs to be opened from the second end, the two rotating shafts 16 in the two second rotating connecting mechanisms 14 are driven by the double door opening mechanism 15 to move inwards in opposite directions, wherein the rotating shaft 16 of the second rotating connecting mechanism 14 positioned at the upper end moves downwards, under the action of the corresponding lever 151, the rotating shaft 16 of the first rotating connecting mechanism 13 positioned at the upper end moves upwards along the axial direction thereof, namely outwards, at the moment, the corresponding protrusion 183 moves upwards along the guide groove 182, and when the rotating shaft 16 of the second rotating connecting mechanism 14 positioned at the upper end moves downwards to be separated from the corresponding shaft hole 17, the rotating shaft 16 of the first rotating connecting mechanism 13 positioned at the upper end moves upwards to the position where the protrusion 183 positioned on the rotating shaft is positioned in the corresponding annular groove 181; similarly, when the rotating shafts 16 of the second rotating and connecting mechanisms 14 at the lower ends move upwards to be separated from the corresponding shaft holes 17, under the action of the corresponding levers 151, the rotating shafts 16 of the first rotating and connecting mechanisms 13 at the lower ends move downwards to the position where the protrusions 183 on the rotating shafts are located in the corresponding annular grooves 181, at this time, the rotating shafts 16 of the two second rotating and connecting mechanisms 14 are separated from the shaft holes 17, meanwhile, the rotating shafts 16 of the two first rotating and connecting mechanisms 13 are located in the corresponding shaft holes 17, the corresponding protrusions 183 are located in the position where the corresponding annular grooves 181 are located, so that the door panel 12 can rotate around the first end, and in the process of rotating the door panel 12, the protrusions 183 are matched with the annular grooves 181, so that the rotating shafts 16 at the first end can be limited to be separated from the corresponding shaft holes 17 inwards, misoperation of a user can be prevented, and the door panel 12 can be prevented from falling off the door frame 11.

In an embodiment, the lever 151 is sleeved on the corresponding rotating shaft 16, and the rotating shaft 16 is further provided with a limiting member 19 for limiting the lever 151 to move along the axial direction of the rotating shaft 16. Thus, when the lever 151 rotates, the rotating shafts 16 at both ends can be driven to move reversely in the up-down direction simultaneously. Of course, it is understood that the lever 151 may be connected to the shaft 16 in other manners.

In the embodiment shown in the drawings, the limiting member 19 includes two nuts 191 screwed onto the rotating shaft 16, the two nuts 191 are respectively located at two opposite sides of the lever 151 along the axial direction of the rotating shaft 16, that is, one of the two nuts 191 abuts against the lower side of the end of the lever 151, and the other one abuts against the upper side of the end of the lever 151, on the one hand, the nuts 191 are screwed onto the rotating shaft 16, so that the nuts 191 are relatively stable, and during the rotation of the lever 151, the nuts 191 are not easy to axially displace with the rotating shaft 16; on the other hand, it is convenient to adjust the limiting position according to the specific position of the lever 151, and adjust the limiting gap according to the thickness of the end of the lever 151, that is, adjust the limiting position by adjusting the positions of the two nuts 191, and adjust the limiting gap by adjusting the gap between the two nuts 191, so as to enhance the universality of the limiting connection between the lever 151 and the rotating shaft 16.

Specifically, the double door mechanism 15 further includes a lever base 152 fixed to the door panel 12, and the lever 151 is rotatably connected to the lever base 152 to rotatably connect the lever 151 to the door panel 12.

Further, the double door mechanism 15 further includes a first driving member 153 at a first end to drive the rotation shafts 16 of the two first rotation coupling mechanisms 13 to be separated from the shaft holes 17, a second driving member 154 at a second end to drive the rotation shafts 16 of the two second rotation coupling mechanisms 14 to be separated from the shaft holes 17, and a user operates the first driving member 153 to separate the rotation shafts 16 of the two first rotation coupling mechanisms 13 from the shaft holes 17, so that the user can open the door panel 12 from the first end, that is, the door panel 12 can rotate around the second end; the user disengages the shafts 16 of the two second rotary linkages 14 from the shaft holes 17 by operating the second driving member 154, so that the user can open the door panel 12 from the second end, i.e., the door panel 12 can rotate about the first end.

Specifically, in the embodiment in which the shaft hole 17 is provided on the door frame 11, the first driving member 153 includes two push-pull rods 1531 connected to the rotating shafts 16 in the two first rotating connection mechanisms 13, and a handle member 1532 for driving the two push-pull rods 1531 to move in opposite directions, where the two push-pull rods 1531 extend in opposite directions along the axial direction of the rotating shafts 16 from the connection with the corresponding rotating shafts 16, and when the handle member 1532 drives the two push-pull rods 1531 to move in opposite directions, the corresponding two rotating shafts 16 are driven to move in opposite directions, so that the rotating shafts 16 are separated from the corresponding shaft holes 17 inwards, and the door panel 12 can open the opening 111 from the first end, that is, the door panel 12 can rotate around the second end.

It can be appreciated that when the two push-pull rods 1531 at the first end move in opposite directions to drive the two rotating shafts 16 to move in opposite directions, under the action of the corresponding levers 151, the two rotating shafts 16 at the second end move outwards in opposite directions, and after the rotating shafts 16 at the first end are separated from the corresponding shaft holes 17, the protrusions 183 on the rotating shafts 16 at the second end move to the positions where the annular grooves 181 are located, so that the door panel 12 can rotate around the second end, and meanwhile, in the process of rotating the door panel 12, the protrusions 183 on the rotating shafts 16 at the second end rotate along the corresponding annular grooves 181, so that the rotating shafts 16 at the second end can be limited to be separated from the corresponding shaft holes 17 inwards, thereby preventing misoperation of a user and preventing the door panel 12 from falling off from the door frame 11.

In a specific embodiment, the handle member 1532 includes two handle bars 1533 connected in a cross rotation manner, and one ends of the two push-pull bars 1531, which are close to the handle members 1532, are respectively connected with the two handle bars 1533, so that a user can synchronously drive the two push-pull bars 1531 to synchronously move in opposite directions by operating the handle member 1532 with one hand, thereby enhancing the moving synchronism of the two push-pull bars 1531, and simultaneously, facilitating the user operation and enhancing the convenience of opening the door panel 12 by the user.

The structure of the second driving member 154 is the same as that of the first driving member 153 and is disposed symmetrically, and will not be described herein.

In summary, in the door body 1 of the present utility model, the first rotation connecting mechanism 13 and the second rotation connecting mechanism 14 are provided with the limit structure 18 between the rotation shaft 16 and the shaft hole 17, so that the limit structure 18 is used to limit the rotation shaft 16 at the rotation end from separating from the shaft hole 17 inwards along the axial direction thereof in the process of rotating the door panel 12, that is, the rotation shaft 16 at the rotation end will not separate from the shaft hole 17 in the process of rotating the door panel 12, thereby preventing the rotation shafts 16 at the first end and the second end from separating from the shaft hole 17, achieving the purpose of preventing the door panel 12 from falling from the door frame 11, and enabling the door panel 12 to be safely opened and closed from the first end or the second end with simple structure.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The door body comprises a door frame with an opening, a door panel for opening or closing the opening, two first rotating connecting mechanisms for rotationally connecting a first end of the door panel to the door frame, two second rotating connecting mechanisms for rotationally connecting a second end of the door panel opposite to the first end to the door frame, and a double-door mechanism for enabling the door panel to open the opening from the first end or the second end, wherein the first rotating connecting mechanisms and the second rotating connecting mechanisms comprise mutually matched rotating shafts and shaft holes which are arranged between the door frame and the door panel; the method is characterized in that: the first rotating connecting mechanism and the second rotating connecting mechanism also comprise limiting structures arranged between the rotating shaft and the shaft hole, and the limiting structures are used for limiting the rotating shaft or the shaft hole which is positioned at the rotating end and arranged on the door panel to move inwards in the rotating process of the door panel; the limiting structure comprises an annular groove arranged on one of the rotating shaft and the shaft hole, a guide groove communicated with the annular groove and extending along the axial direction of the rotating shaft or the shaft hole, and a protrusion arranged on the other of the rotating shaft or the shaft hole and matched with the annular groove and the guide groove, wherein the guide groove is used for guiding the protrusion to enter the annular groove or guiding the protrusion to be far away from the annular groove so as to lead the corresponding rotating shaft to be separated from the shaft hole; when the door panel is in a closed state, the protrusion is positioned in the guide groove; the double door mechanism comprises a lever which is in linkage with the first rotating connecting mechanism and the second rotating connecting mechanism which are positioned on the same side, the lever is rotationally connected to the door panel, the first rotating connecting mechanism and the second rotating connecting mechanism which are positioned on the same side are respectively connected to the opposite ends of the lever, and the lever is used for enabling the first rotating connecting mechanism and the second rotating connecting mechanism which are positioned on the same side to reversely move.

2. The door as claimed in claim 1, wherein: the annular groove is recessed outwards along the circumferential direction of the annular groove from the inner side of the shaft hole, and the guide groove is positioned at one side of the annular groove, which is close to the rotating shaft; the bulge is arranged on the rotating shaft.

3. The door as claimed in claim 1, wherein: the shaft hole is arranged on the door frame, and two ends of the lever are respectively connected to the rotating shafts of the first rotating connecting mechanism and the second rotating connecting mechanism which are positioned on the same side.

4. A door as claimed in claim 3, wherein: the lever is sleeved on the rotating shaft, and a limiting part for limiting the lever to move relative to the rotating shaft along the axial direction of the rotating shaft is further arranged on the rotating shaft.

5. The door body as claimed in claim 4, wherein: the limiting piece comprises two nuts which are connected to the rotating shaft in a threaded mode, and the two nuts are located at two opposite sides of the lever along the axial direction of the rotating shaft.

6. A door body as claimed in any one of claims 1 to 5, wherein: the double door mechanism further comprises a first driving piece which is positioned at the first end to drive the rotating shafts in the two first rotating connecting mechanisms to be separated from the shaft holes, and a second driving piece which is positioned at the second end to drive the rotating shafts in the two second rotating connecting mechanisms to be separated from the shaft holes.

7. The door body as claimed in claim 6, wherein: one of the rotating shaft and the shaft hole is arranged on the door frame; the first driving piece and the second driving piece comprise two push-pull rods connected to the other one of the rotating shaft and the shaft hole, and handle pieces used for driving the two push-pull rods to move oppositely, and the two push-pull rods extend oppositely along the axial direction of the rotating shaft.

8. The door as claimed in claim 7, wherein: the handle piece comprises two handle rods which are connected in a crossed and rotating mode, and one ends, close to the handle piece, of the two push-pull rods are connected with the two handle rods respectively.