CN219262247U

CN219262247U - Turnover device and slotless rolling door

Info

Publication number: CN219262247U
Application number: CN202320801140.3U
Authority: CN
Inventors: 李健志
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-06-27
Anticipated expiration: 2033-04-11

Abstract

The utility model discloses a turnover device and a slotless rolling door. The turnover device comprises at least two turnover pieces; one end of the first turnover piece is hinged with one end of the second turnover piece, a first limiting structure used for limiting the rotation of the first turnover piece to the first direction when the turnover piece is located in the first state and a second limiting structure used for limiting the rotation of the first turnover piece to the second direction are arranged between the first turnover piece and the second turnover piece, the turnover device is fixed regardless of the impact force of the bottom or the pulling force of the bottom, and when the turnover pieces are connected at intervals in sequence, the second turnover piece and the first turnover piece can be turned one by one in sequence, and the turnover storage of the whole part is finally realized. The slotless rolling door comprises two groups of turnover devices which are arranged on two sides of the door body, the door body is fixed no matter whether the door body receives external impact force or tension force, the turnover devices on two sides of the door body can replace a door slot arranged on the existing wall body, and then the door slot is not required to be arranged on the wall body, so that the attractiveness is improved.

Description

Turnover device and slotless rolling door

Technical Field

The utility model relates to a turnover device and a slotless rolling door.

Background

The existing rolling door used in public places such as business facades, garages, markets, hospitals and factories and mine enterprises needs fixed slide ways on two sides, namely, the normal use of the rolling door can be guaranteed by installing concave door grooves on a wall body, the door grooves are formed in the wall body, the installation cost of the rolling door is increased, the facade is also attractive, the service time is prolonged, a lot of dirt or dust can be accumulated in the door grooves, bacteria are bred, and the rolling door is difficult to clean.

The impact resistance of the existing rolling door is realized by fixing two sides of the rolling door in a door slot, but the wider the rolling door is, the larger the door body can shake, the smaller the impact resistance the rolling door can bear, and the potential safety hazard is brought.

Disclosure of Invention

The utility model aims to provide a turnover device and a slotless rolling door, so as to solve at least one of the technical problems.

According to one aspect of the present utility model, there is provided a flipping device comprising at least two flipping elements;

two ends of the turnover pieces are provided with hinge structures, each turnover piece comprises a first turnover piece and a second turnover piece, one end of each first turnover piece is hinged with one end of each second turnover piece, each first turnover piece comprises a first end face, each second turnover piece comprises a second end face, and the first end faces and the second end faces are two opposite end faces when the first turnover pieces and the second turnover pieces are hinged;

a first limiting structure for limiting the first turnover piece to rotate in a first direction when the first turnover piece and the second turnover piece are in a first state is arranged between the first turnover piece and the second turnover piece, wherein the first direction is the direction in which a first end face is arranged on the first turnover piece;

the device also comprises a second limit structure for limiting the first turnover part to rotate in a second direction when the first turnover part and the second turnover part are positioned in a first state, wherein the second direction is opposite to the first direction, the second limit structure comprises a limit part movably arranged in the first turnover part and a limit rod arranged on the first turnover part and/or the second turnover part,

the limiting piece is arranged in a mode that when the first overturning piece and the second overturning piece are located in a first state, at least part of the limiting piece can move into the second overturning piece, and the second limiting structure is arranged in a mode that when part of the limiting piece moves into the second overturning piece, the inner side face of the first end face, the inner side face of the second end face and the limiting rod are propped against the limiting piece to limit the first overturning piece to rotate towards the second direction.

According to the turnover pieces of the turnover device, the end parts are hinged in pairs through the hinge structure, and when the first turnover pieces and the second turnover pieces are in the first state, the first turnover pieces can be limited to rotate towards the direction provided with the first end face by the first limiting structure, so that the first turnover pieces and the second turnover pieces can only rotate within a certain range. Simultaneously, through setting up second limit structure, when first upset piece and second upset piece are located the first state, at least part of locating part can move to in the second upset piece, and at this moment, when first upset piece and second upset piece take place relative rotation, will make first terminal surface on the first upset piece and the second terminal surface on the second upset piece promote the locating part, at this moment under the interact of first terminal surface, second terminal surface and gag lever post, can restrict the rotation of first upset piece to another direction, and then make can be restricted in the first state between first upset piece and the second upset piece. And when moving back the locating part only in first upset piece, because the locating part can not promote any more to the second terminal surface, and then can't jointly produce the effect to the locating part between first terminal surface, second terminal surface and the gag lever post for the locating part can not cause the interference to the rotation between first upset piece and the second upset piece. And so on, when the other end of the second turnover piece is connected with the next turnover piece, the second turnover piece forms a first turnover piece of the next turnover piece, and the next turnover piece is the second turnover piece, so that the turnover pieces can be sequentially connected, each turnover piece is sequentially turned one by utilizing the second limiting structure, and finally the turnover storage of the whole component is realized. The turnover device can be used on a rolling door, two groups of turnover devices are arranged on two sides of the door body, and when at least part of the limiting piece moves into the second turnover piece, the adjacent door pieces on the rolling door can not rotate any more, so that the door body is fixed no matter the door body receives external impact force or tensile force. That is, the turnover devices arranged at the two sides of the rolling door can replace the door slot arranged on the existing wall body to fix the door body. The turnover device reduces the installation cost of the rolling door (namely, a door slot is not required to be installed on a wall body), and can also improve the overall aesthetic degree of the rolling door. The turnover device can also be used in an extending way and changed into tools with various forms, such as ladders, working platforms, bridge or bridging beams when the road breaks, and the turnover device can also be used on a conveyor belt, and a parallel-arranged conveying plate can be arranged between two groups of turnover devices.

In some embodiments, the hinge structure includes a rotation shaft disposed at a hinge position of the first flip and the second flip, the rotation shaft being a stopper rod.

Thus, by such arrangement, the hinge structure between the first turnover member and the second turnover member can be utilized as the limit lever in the second limit structure, thereby simplifying the overall structure and reducing the cost of the device.

In some embodiments, a positioning structure for limiting the movement of the limiting member is disposed in the first turning member, the positioning structure includes a positioning rod disposed on the first turning member and a bar-shaped hole formed in the limiting member, the positioning rod passes through the bar-shaped hole, and at least one end of the positioning rod is disposed on a side wall of the first turning member.

Therefore, through the arrangement, the moving direction and the moving range of the limiting piece can be limited by utilizing the structure of the strip-shaped hole and the positioning rod, so that the limiting piece can be arranged in the first overturning piece, and the limiting piece can move along the design direction of the strip-shaped hole, so that at least part of the limiting piece can move into the second overturning piece.

In some embodiments, the positioning rod is a stop rod.

Thus, by providing the above arrangement, the structure for restricting the movement of the stopper can be used as the stopper rod in the second stopper structure, and the overall structure can be simplified, and the cost of the device can be reduced.

In some embodiments, an elastic member for driving the limiting member to move away from the second turning member is further disposed between the first turning member and the limiting member, one end of the elastic member is connected with the limiting member, and the other end of the elastic member is connected with the first turning member.

Therefore, through the arrangement, the limiting part can move into the second overturning part under the action of external force, so that the effect of limiting the rotation of the first overturning part is achieved, and when the external force to the limiting part is eliminated, the limiting part can return into the first overturning part through the elastic part, and the first overturning part and the second overturning part can be restored to a state capable of rotating relatively.

In some embodiments, the length of the stop is equal to the distance between the axes of the hinge structures provided at both ends of the flip.

Therefore, through the arrangement, when a plurality of overturning pieces are adjacently arranged, the limiting pieces arranged in each overturning piece are propped against each other head and tail, so that the limiting pieces at the end parts are pushed, at least part of the limiting pieces at the end parts are enabled to move into the second overturning pieces, the limiting pieces in each overturning piece are simultaneously pushed, and the limiting pieces move into the corresponding second overturning pieces, so that each overturning piece is limited to be in a first state.

In some embodiments, the first spacing structure comprises

The first end face and the second end face are arranged in a way that when the first turnover piece and the second turnover piece are in a first state, the end part of the first end face, which is close to the second turnover piece, is abutted against the end part of the second end face, which is close to the first turnover piece; and/or

The first overturning piece is provided with a first bulge, the second overturning piece is provided with a second bulge, and when the first overturning piece and the second overturning piece are in a first state, the first bulge and the second bulge are abutted against each other.

Thus, by providing the above arrangement, the first turnover member can be restricted from rotating in the direction in which the first end face is provided by abutting the end portions of the first end face and the second end face, or the first protrusion and the second protrusion can be directly abutted against each other, so that the first turnover member can be restricted from rotating in the direction in which the first end face is provided.

According to another aspect of the present utility model, there is provided a slotless rolling door comprising at least two sets of the above-mentioned turning devices, a door body comprising at least two sections of door leaves disposed between the two sets of turning devices,

one end of the first door leaf is arranged on the side wall of the first turnover part of the first group of turnover devices, the other end is arranged on the side wall of the first turnover part of the second group of turnover devices,

one end of the second door leaf is arranged on the side wall of the second turnover piece of the second group turnover device, the other end is arranged on the side wall of the second turnover piece of the second group turnover device,

the door body rolling device is arranged at the top of the door body.

Like this, no matter the door body of slotless rolling slats door receives external impact force or pulling force all is motionless, the turning device of door body both sides promptly can replace the door slot of seting up on the current wall body, fixes the door body, has both reduced rolling slats door's installation cost, namely: the door body rolling device can be sequentially rolled up from top to bottom to prevent the door body from shaking due to the fact that the door body is too wide when the door body is required to be opened, the door body and the turnover device can be finally accommodated in the door body rolling device, in addition, when the door sheet adopts a bulletproof steel plate, bulletproof and explosion-proof effects can be realized, safety is greatly guaranteed, when the door body is transversely placed, the door sheet can be rolled up and down to move, and when the door body is longitudinally placed, the door sheet can be rolled up and down to move.

In some embodiments, the bottom of the door body is provided with a door bottom plate, positions on two ends of the door bottom plate, which correspond to the turning device, are provided with pushing structures for pushing the limiting parts in the turning device to move towards the second turning parts, the pushing structures comprise through holes for communicating the bottom and the top of the door bottom plate and pushing parts arranged in the through holes, and the length of the pushing parts is larger than that of the through holes.

Through the arrangement, through holes and pushing pieces arranged on the door bottom plate can be utilized, when the door body is pulled to the bottommost part to enable the door bottom plate to prop against the ground, the pushing pieces can prop against the ground, so that the pushing pieces jack up the limiting pieces along the through holes, at least part of the limiting pieces can move into the second overturning pieces, rotation of the overturning device is limited, and the door body is fixed.

In some embodiments, a limiting groove extending downwards from the top of the through hole is formed in the side wall of the through hole, and a limiting convex rod accommodated in the limiting groove is arranged on the pushing piece.

Therefore, through the arrangement, the pushing piece can not fall off from the through hole through the structure of the limiting groove and the limiting convex rod.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a turnover device according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing a cross-sectional shape of a flipping device according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a first limiting structure of a turnover device according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a first turning member and a second turning member of a turning device according to an embodiment of the present utility model in a first state;

fig. 5 is a schematic structural diagram of a second limiting structure of the turnover device according to an embodiment of the present utility model;

fig. 6 is a schematic structural view of a limiting member of a turnover device according to an embodiment of the present utility model;

fig. 7 is an enlarged schematic view of a portion a in fig. 1;

FIG. 8 is a schematic structural view showing a state that a part of a limiting member of a turning device is moved into a second turning member according to an embodiment of the present utility model;

FIG. 9 is a schematic cross-sectional view illustrating a state that a portion of a limiting member of a turnover device is moved into a second turnover member according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a slotless rolling door in accordance with one embodiment of the present utility model;

fig. 11 is an enlarged schematic view of the portion B in fig. 10;

fig. 12 is a schematic structural view of a slotless roll-up door in accordance with yet another embodiment of the present utility model;

reference numerals illustrate: 1. a turnover piece; 11. a first overturning piece; 12. a second overturning piece; 2. a hinge structure; 21. a rotating shaft; 31. a first end face; 32. a second end face; 41. a first protrusion; 42. a second protrusion; 51. a limiting piece; 61. a positioning rod; 62. a bar-shaped hole; 71. an elastic member; 72. a male hook; 81. a first connection plate; 82. a second connecting plate; 91. a turnover device; 92. a door sheet; 93. a door body rolling device; 94. a door bottom plate; 95. a pushing member; 96. concave holes; 97. a through hole; 98. a limit groove; 99. and a limit protruding rod.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

Fig. 1 schematically shows the structure of a turning device according to an embodiment of the present utility model, and referring to fig. 1, the turning device includes at least two turning members 1, namely a first turning member 11 and a second turning member 12 shown in fig. 1. Both ends of the turnover piece 1 are provided with a hinge structure 2, and one ends of the first turnover piece 11 and the second turnover piece 12 are hinged. The first turnover member 11 includes a first end surface 31, the second turnover member 12 includes a second end surface 32, and the first end surface 31 and the second end surface 32 are opposite end surfaces when the first turnover member 11 and the second turnover member 12 are hinged. The first flipping member 11 may be identical to the second flipping member 12, or may be different from the second flipping member 12, so that the first flipping member 11 and the second flipping member 12 may be better connected together. The structure of the turnover pieces 1 can be a structure with a U-shaped or C-shaped section, and can also be in other shapes, and the turnover pieces 1 only need to meet at least one end face, and the end face is opposite to the end face when two adjacent turnover pieces 1 are hinged to rotate. As an exemplary embodiment, as shown in fig. 2, the structure of the flip 1 is a structure having a U-shaped cross section, and the distance between the two sides of the first flip 11 is smaller than the distance between the two sides of the second flip 12, so that the two sides of the first flip 11 can be inserted between the two sides of the second flip 12, so that a hinge structure 2 is provided on the sides of the first flip 11 and the sides of the second flip 12, so that a hinge is formed between the first flip 11 and the second flip 12. In particular, as a possible embodiment, the hinge structure 2 may be a rotation shaft 21 penetrating both sides of the first flip 11 and both sides of the second flip 12 at the same time. In addition, the hinge structure 2 may be a structure of a rotation shaft 21 penetrating only the side surface of the first flipping member 11 and the side surface of the second flipping member 12 located on the same side, which is not limited in this embodiment. And for the first end face 31 on the first turnover piece 11, namely, the bottom face of the U shape, the second end face 32 on the second turnover piece 12 is also the bottom face of the U shape, and when the first turnover piece 11 and the second turnover piece 12 are hinged, the first end face 31 and the second end face 32 are arranged on the same side. In the embodiment in which the structures of the first flip 11 and the second flip 12 are identical, the first flip 11 and the second flip 12 may be arranged such that the sides of the U-shaped structure of the first flip 11, the sides of the U-shaped structure of the second flip 12, the sides of the U-shaped structure of the first flip 11, the sides of the U-shaped structure of the second flip 12 are arranged at such a spacing when the first flip 11 and the second flip 12 are hinged. It will be appreciated that when a plurality of turnover members 1 are connected, the other end of the second turnover member 12 is further connected to the next turnover member 1, and at this time, the second turnover member 12 is the first turnover member 11 of the next turnover member 1, and the structure related to the first turnover member 11 is correspondingly provided, so that the first turnover member 11 as the next turnover member 1 performs the corresponding function.

A first limiting structure for limiting the rotation of the first flipping member 11 in the first direction when the first flipping member 11 and the second flipping member 12 are in the first state is provided between the first flipping member 11 and the second flipping member 12. The first state may be a state in which the first flipping member 11 and the second flipping member 12 are in a straight line (i.e. as shown in fig. 3 and 4) or a state similar to a straight line. The first direction is the direction in which the first end surface 31 is provided on the first flip 11, i.e., the direction a shown in fig. 4. As a possible embodiment, as shown in fig. 3 and 4, the first limiting structure may be provided as follows: the first end face 31 and the second end face 32 are arranged such that, when the first flip 11 and the second flip 12 are in the first state, an end of the first end face 31 near the second flip 12 abuts an end of the second end face 32 near the first flip 11. Specifically, the first state is exemplified as a state in which the first flipping member 11 and the second flipping member 12 are in line with each other. With reference to fig. 3 and 4, when the first end face 31 abuts against the second end face 32, the rotation of the first turning member 11 can be effectively limited, and when the first turning member 11 rotates in the a direction relative to the second turning member 12, the first turning member 11 and the second turning member 12 rotate to be in a straight line state, and then cannot continue to rotate in the a direction under the interaction of the first end face 31 and the second end face 32. As another possible embodiment, the first limiting structure may be further configured to: the first flipping member 11 is provided with a first protrusion 41, the second flipping member 12 is provided with a second protrusion 42, and the first protrusion 41 and the second protrusion 42 are arranged such that the first protrusion 41 and the second protrusion 42 are abutted when the first flipping member 11 and the second flipping member 12 are in the first state. Specifically, the first state is exemplified as the first flipping member 11 and the second flipping member 12 being in a straight line with each other. Referring to fig. 3 and 4, when the first protrusion 41 and the second protrusion 42 abut against each other, the rotation of the first turning member 11 can be effectively limited, so that when the first turning member 11 rotates in the a direction relative to the second turning member 12, the first turning member 11 and the second turning member 12 rotate to be in a straight line state, and then cannot continue to rotate in the a direction under the interaction of the first protrusion 41 and the second protrusion 42. The specific structure of the first limiting member 51 may be other different structures, which is not limited in this embodiment. As a more preferable implementation mode, a plurality of different first limit structures can be adopted at the same time, and the stability of the first limit structure can be better ensured by adopting the first limit structures of the two different implementation modes.

A second limiting structure for limiting the first turnover piece 11 to rotate in the second direction when the first turnover piece 11 and the second turnover piece 12 are in the first state is further arranged between the first turnover piece 11 and the second turnover piece 12. Wherein the second direction is the opposite direction to the first direction, i.e. the direction b in fig. 4. Referring to fig. 5, the second limiting structure includes a limiting member 51 movably disposed in the first tilting member 11 and a limiting rod disposed on the first tilting member 11 and/or the second tilting member 12. Wherein the limiting member 51 is configured such that at least a portion of the limiting member 51 is movable into the second flip member 12 when the first flip member 11 and the second flip member 12 are in the first state. And the second limiting structure is configured such that when a part of the limiting member 51 moves into the second turning member 12, the inner side surface of the first end surface 31, the inner side surface of the second end surface 32 and the limiting rod simultaneously abut against the limiting member 51, so as to limit the first turning member 11 to rotate in the second direction. The stopper 51 should be of a rigid structure so as to be able to be stabilized by the first end surface 31, the second end surface 32 and the stopper rod at the same time, so as to realize the function of restricting the rotation of the first tilting member 11 in the second direction. For example, referring to fig. 6, the limiting member 51 may have a C-shaped steel structure, so that the structural stability of the limiting member 51 can be effectively ensured, and meanwhile, the material and the weight can be reduced. The structure for limiting the movement of the limiting member 51 may not be additionally provided between the limiting member 51 and the first tilting member 11, i.e., the limiting member 51 may be arbitrarily moved within the first tilting member 11. As a possible embodiment, a positioning structure for limiting the movement of the limiting member 51 may also be provided between the limiting member 51 and the first flipping member 11. Referring to fig. 7, the positioning structure may include a positioning rod 61 provided on the first tilting member 11 and a bar-shaped hole 62 provided on the limiting member 51, and the positioning rod 61 passes through the bar-shaped hole 62 to limit the movement of the limiting rod. Wherein, location structure can be provided with the multiunit, referring to the fig. 1 and showing, in this embodiment, location structure all is provided with one in the front portion and the rear portion of locating part 51 to realize the spacing effect to locating part 51 better, also can guarantee the connection stability between locating part 51 and the first upset piece 11 piece simultaneously. The length of the bar-shaped hole 62 is not limited in this embodiment, and it is only required that a portion of the stopper 51 can move into the second flipping member 12 and interact with the first end surface 31, the second end surface 32 and the stopper rod to rotate the first flipping member 11 in the second direction. Referring to fig. 7, in an embodiment in which the first limiting structure includes the first protrusion 41 provided on the first flipping member 11 and the second protrusion 42 provided on the second flipping member 12, the end of the positioning rod 61 on the first flipping member 11 may extend to the outside of the first flipping member 11, so that the first protrusion 41 of the first limiting structure may be formed to reduce the number of structures on the flipping member 1 and simplify the structure of the flipping member 1.

The limiting rod in the second limiting structure can be arranged on the first turnover piece 11 or the second turnover piece 12. As a possible embodiment, in an embodiment in which the hinge structure 2 may be a rotating shaft 21 penetrating through both sides of the first flip 11 and both sides of the second flip 12 at the same time, the rotating shaft 21 may be used as a stop lever to perform a function related to the stop lever, and thus no additional stop lever is required. Specifically, referring to fig. 8 and 9, when the first flipping member 11 and the second flipping member 12 are located in the first state and a portion of the limiting member 51 is located in the second flipping member 12, when the first flipping member 11 is driven to rotate in the second direction by using an external force, the first end surface 31 will abut against the end portion of the limiting member 51 located in the first flipping member 11, the second end surface 32 will abut against the end portion of the limiting member 51 located in the second flipping member 12 to push the limiting member 51 upward in the drawing, and at this time, the rotating shaft 21 serving as a limiting rod will also abut against the limiting member 51 to prevent the limiting member 51 from moving upward in the drawing, so as to realize that the first flipping member 11 rotates in the second direction. As another possible embodiment, in an embodiment provided with a positioning structure including the positioning rod 61 provided on the first flipping member 11 and the bar-shaped hole 62 provided on the stopper 51, the positioning rod 61 may serve as a stopper rod to perform the related function of the stopper rod. Specifically, referring to fig. 8 and 9, when the first turnover member 11 and the second turnover member 12 are located in the first state and a portion of the limiting member 51 is located in the second turnover member 12, when the first turnover member 11 is driven to rotate in the second direction by using an external force, the first end surface 31 will abut against the end portion of the limiting member 51 located in the first turnover member 11, the second end surface 32 will abut against the end portion of the limiting member 51 located in the second turnover member 12 to push the limiting member 51 upward in the drawing, and at this time, the positioning rod 61 serving as a limiting rod abuts against the inner side surface of the bar-shaped hole 62 formed in the limiting member 51 to prevent the limiting member 51 from moving upward in the drawing, thereby realizing that the first turnover member 11 rotates in the second direction. As a preferred embodiment, the two stop levers of the above two different embodiments may be provided on the first tilting member 11 and the second tilting member 12 at the same time, so that the stability of the second stop structure can be better ensured.

As a possible embodiment, the length of the stopper 51 may be set to be equal to the distance between the hinge structures 2 provided at both ends of the flip 1, as shown in fig. 5. Through setting up like this, when a plurality of upset pieces 1 set up adjacently, the locating part 51 that sets up in every upset piece 1 will offset from head to tail, and then can make when promoting the locating part 51 of tip, when making the at least part activity that is located the locating part 51 of tip to second upset piece 12, the locating part 51 in every upset piece 1 all can be promoted simultaneously, moves to in its corresponding second upset piece 12 for all be restricted to be located first state between every two upset pieces 1.

As a possible embodiment, as shown in fig. 5, the stopper 51 may be further provided with an elastic member 71 for driving the stopper 51 to move away from the second tilting member 12. Through this setting, can make the locating part 51 receive the effect of external force in the second upset piece 12 that can move to play the pivoted effect of restriction first upset piece 11, and when the external force to locating part 51 was eliminated, can make locating part 51 get back to in the first upset piece 11 through elastic component 71, make and resume the state that can rotate relatively between first upset piece 11 and the second upset piece 12. The elastic member 71 may be provided such that one end thereof is connected to the stopper 51 and the other end thereof is connected to the first flipping member 11. For example, referring to fig. 5, the elastic member 71 may be a spring, and the stopper 51 may be provided with a protrusion 72 such that one end of the spring may be connected to the protrusion 72. The other end of the spring is connected to the first flip 11. In an embodiment where the hinge structure 2 may be a rotation shaft 21 penetrating both sides of the first flip 11 and both sides of the second flip 12 at the same time, the other end of the spring may be directly hung on the rotation shaft 21. In the embodiment provided with the positioning structure including the positioning rod 61 provided on the first flipping member 11 and the bar-shaped hole 62 provided on the limiting member 51, the other end of the spring may also be directly hung on the positioning rod 61. And other structures may be provided on the first flipping member 11 to be connected to the other end of the spring, which is not limited in this embodiment. When the external force to the limiting member 51 is eliminated, the limiting member 51 moves away from the second turning member 12 under the action of the spring, so that the limiting member 51 returns to the first turning member 11, that is, the two ends of the limiting member 51 shown in fig. 1 are located near the end of the first end face 31 on the first turning member 11, so that the limiting member 51 does not extend into the second turning member 12 any more, and the first turning member 11 and the second turning member 12 can be restored to a state capable of relatively rotating.

Referring to fig. 1, as a possible embodiment, a first transverse connection plate 81 may be integrally formed on a side wall of the first flip 11, and a second transverse connection plate 82 may be integrally formed on a side wall of the second flip 12. When the turnover device 91 is installed on two sides of the rolling shutter door body, the door sheet 92 of the door body can be fixed on the first connecting plate 81 (such as by screws, rivets, etc.), and the door sheet 92 of the door body can also be fixed on the second connecting plate 82 (such as by screws, rivets, etc.), so that the installation of the door sheet 92 and the turnover device 91 is very convenient and quick.

The turnover devices 91 of the utility model can be used on the rolling door, two groups of turnover devices 91 are arranged on two sides of the door body, and the door body is fixed no matter the door body receives external impact force or tensile force, namely, the turnover devices 91 on two sides of the rolling door can replace a door slot formed on the existing wall body to fix the door body, thereby reducing the installation cost of the rolling door (namely, the door slot is not required to be arranged on the wall body), and improving the overall aesthetic degree of the rolling door.

The turnover device 91 of the present utility model may be applied to a conveyor belt, and a conveyor plate arranged in parallel may be installed between two sets of turnover devices 91.

Fig. 10 schematically illustrates the structure of a slotless roll-up door in accordance with an embodiment of the present utility model. Referring to fig. 10, the slotless roll-up door includes two sets of the above-described turning device 91, a door body, and a door body rolling device 93.

Referring to fig. 10, the door body includes a plurality of door leaves 92, the door leaves 92 are positioned between two groups of turnover devices 91, the left end of a first door leaf 92 may be fixed to a first connection plate 81 of a first turnover member 11 of a turnover device 91 positioned at the left side by rivets (or screws), and the right end of a first door leaf 92 may be fixed to a first connection plate 81 of a first turnover member 11 of a turnover device 91 positioned at the right side by rivets (or screws); the left end of the second shutter 92 may be fixed to the second connection plate 82 of the second flipping member 12 of the flipping device 91 located on the left side by a rivet (or screw), and the right end of the second shutter 92 may be fixed to the second connection plate 82 of the second flipping member 12 of the flipping device 91 located on the right side by a rivet (or screw). Similarly, the left and right ends of the multi-section door sheet 92 are connected to the two sets of flipping devices 91 in the manner described above to form the door body of the rolling door.

Referring to fig. 10, a door body rolling device 93 is installed at the top of the door body. In the present embodiment, the door closing device 93 may be of an electric type, and in other embodiments, the door closing device 93 may be of a manual type.

As a possible embodiment, the bottom end of the door body may be provided with a door bottom plate 94, and pushing structures for pushing the stopper 51 in the turnover device 91 to move toward the second turnover member 12 are provided at positions corresponding to the turnover device 91 on both ends of the door bottom plate 94. Specifically, referring to fig. 10, the pushing structure may include a through hole 97 communicating the bottom and the top of the door bottom plate 94 and a pushing piece 95 disposed in the through hole 97, the pushing piece 95 having a length greater than that of the through hole 97. Through the arrangement, through holes 97 and pushing pieces 95 arranged on the door bottom plate 94 can be utilized, when the door body is pulled to the bottommost position, and the door bottom plate 94 is propped against the ground, the pushing pieces 95 can prop up the limiting pieces 51 along the through holes 97, so that at least part of the limiting pieces 51 can move into the second overturning pieces 12, rotation of the overturning device 91 is limited, and the door body is fixed. As a possible implementation manner, a limiting groove 98 extending downwards from the top of the through hole 97 may be further provided on the side wall of the through hole 97, and the pushing member 95 is provided with a limiting protruding rod 99 accommodated in the limiting groove 98, so that the pushing member 95 cannot directly fall out of the through hole 97 under the interaction of the limiting groove 98 and the limiting protruding rod 99. And, can be provided with shrinkage pool 96 in subaerial position department that corresponds with the position of pushing away piece 95 to when making door bottom plate 94 and ground offset, the lower extreme of pushing away piece 95 can insert in shrinkage pool 96, and then can form spacingly to door bottom plate 94, makes the whole door body more firm. For the lower extreme of pushing away piece 95, can set up to the toper structure to can make pushing away piece 95 insert in the shrinkage pool 96 better, in order to cooperate with shrinkage pool 96, improve the structural stability of the door body.

Fig. 12 schematically shows the structure of a slotless roll-up door of another embodiment of the present utility model. Referring to fig. 12, when the size requirement of the door body in the left-right direction is very wide, four groups of turnover devices 91 and three groups of door bodies can be arranged at intervals, so that shaking caused by the too wide size of the door body can be further prevented, the safety is further improved, in the middle two groups of turnover devices 91, the first connection plates 81 can be arranged on two sides of the first turnover piece 11, the second connection plates 82 can be arranged on two sides of the second turnover piece 12, in this way, the door pieces 92 can be installed on the left and right sides of the middle two groups of turnover devices 91, and the installation method of the door pieces 92 is the same as that of the slotless rolling door of the embodiment shown in fig. 10 and 11.

The door body of the slotless rolling door is fixed no matter the door body receives external impact force or tensile force, namely, the turnover devices 91 at two sides of the door body can replace the door slot arranged on the existing wall body to fix the door body, thereby reducing the installation cost of the rolling door, namely: the door slot is not required to be installed on the wall body, the overall attractiveness of the door body can be improved, when the door body is required to be opened, the door body rolling device 93 can roll the turnover device 91 and the door sheet 92 from top to bottom in sequence, the door body and the turnover device 91 are finally contained in the door body rolling device 93, and meanwhile, when the requirement on the size of the door body is very wide, a plurality of slotless rolling doors can be spliced together side by side, and the door body is prevented from shaking due to the fact that the door body is too wide. In addition, when the door sheet 92 adopts a bulletproof steel plate, bulletproof and explosion-proof can be realized, the safety is greatly ensured, when the door body is transversely placed, the door sheet 92 can be vertically rolled and moved, and when the door body is longitudinally placed, the door sheet 92 can be horizontally rolled and moved.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. Turning device, its characterized in that: comprises at least two turnover pieces;

2. The flipping unit of claim 1, wherein: the hinge structure comprises a rotating shaft arranged at the hinge position of the first turnover piece and the hinge position of the second turnover piece, and the rotating shaft is a limiting rod.

3. The flipping unit of claim 1, wherein: the positioning structure is characterized in that a positioning structure used for limiting the movement of the limiting piece is arranged in the first overturning piece, the positioning structure comprises a positioning rod arranged on the first overturning piece and a strip-shaped hole formed in the limiting piece, the positioning rod penetrates through the strip-shaped hole, and at least one end of the positioning rod is arranged on the side wall of the first overturning piece.

4. A flipping unit according to claim 3, wherein: the positioning rod is a limiting rod.

5. The flipping unit of claim 1, wherein: and an elastic piece used for driving the limiting piece to move away from the second turning piece is further arranged between the first turning piece and the limiting piece, one end of the elastic piece is connected with the limiting piece, and the other end of the elastic piece is connected with the first turning piece.

6. The flipping unit of claim 2, wherein: the length of the limiting piece is equal to the distance between the axes of the hinge structures arranged at the two ends of the overturning piece.

7. The flipping unit according to any one of claims 1 to 6, wherein: the first limit structure comprises

8. The slotless rolling door is characterized in that: comprising at least two groups of turnover devices according to any one of claims 1 to 7, a door body and a door body rolling device, wherein the door body comprises at least two sections of door sheets, the door sheets are arranged between the two groups of turnover devices,

the door body rolling device is arranged at the top of the door body.

9. The slotless rolling door according to claim 8 wherein: the bottom of the door body is provided with a door bottom plate, positions on two ends of the door bottom plate, which correspond to the turnover device, are provided with a pushing structure for pushing a limiting part in the turnover device to move towards a second turnover part, the pushing structure comprises a through hole for communicating the bottom and the top of the door bottom plate and a pushing part arranged in the through hole, and the length of the pushing part is larger than that of the through hole.

10. The slotless rolling door according to claim 9, wherein: the side wall of the through hole is provided with a limiting groove extending downwards from the top of the through hole, and the pushing piece is provided with a limiting convex rod accommodated in the limiting groove.