CN215056944U - Protective metal door and window - Google Patents

Abstract

The utility model relates to a protection type metal door and window belongs to door and window technical field, can not increase burglary-resisting window and protection network to metal door and window outside for metal door and window's security reduction problem provides following technical scheme, and the technical essential of this application includes the metal frame and installs the casement on the metal frame, the installation annular has been seted up in the outside of metal frame, the inside demountable installation of installation annular has the protective frame, be provided with coupling mechanism between metal frame and the protective frame, the installing port has been seted up to the protective frame, the area of installing port is greater than the area of casement, fixed mounting has the protection piece in the installing port. This application has the advantage that promotes the security that metal door and window used.

Description

Protective metal door and window

Technical Field

The application relates to the technical field of doors and windows, in particular to a protective metal door and window.

Background

With the development of the building industry, the door and window can not be opened in the house, and in order to prolong the service life of the door and window, the door and window are made of metal materials.

In order to consider appearance and conform to the decoration style of houses, particularly in office buildings, high-rise apartments and the like, in the conventional metal doors and windows, an anti-theft window and a protective net are not added outside the metal doors and windows for the beauty of buildings, so that the safety of the metal doors and windows is reduced.

SUMMERY OF THE UTILITY MODEL

In order to promote the security that metal door and window used, this application provides a protection type metal door and window, adopts following technical means:

the utility model provides a protection type metal door and window, includes the metal frame and installs the casement on the metal frame, the installation annular has been seted up in the outside of metal frame, the inside demountable installation of installation annular has the protecting frame, be provided with coupling mechanism between metal frame and the protecting frame, the installing port has been seted up to the protecting frame, the area of installing port is greater than the area of casement, fixed mounting has the protection piece in the installing port.

By adopting the technical scheme, the protective frame is detachably arranged on one side of the metal door and window, and the protective piece is fixedly connected with the protective frame, so that after the window sash is opened, the protective piece is arranged on the outer side of the metal frame, and the use safety of the metal door and window is improved; meanwhile, the installation ring groove is formed in the outer side of the metal frame, and the protection frame is installed inside the installation ring groove, so that the flatness of the outer side of the metal door and window can be kept, and the overall attractiveness is not easily damaged.

Optionally, the protective element comprises braided wire and a mesh surrounded by braided wire.

By adopting the technical scheme, the mesh surrounded by the braided wires forms the protection piece, so that the structure of the protection piece is more stable; meanwhile, due to the arrangement of the meshes, the shielding of the protecting piece on the window sash can be reduced, so that the arrangement of the protecting piece does not obstruct the ventilation of the metal door window.

Optionally, the braided wire is a rigid wire with certain strength.

Through adopting above-mentioned technical scheme, can strengthen the structural strength of protection piece for protection piece non-deformable keeps the protective effect of protection piece.

Optionally, coupling mechanism includes two relative tight pieces that press from both sides that set up, two press from both sides tight piece and set up respectively in the inside and outside both sides of protection frame, the cavity has been seted up to the metal frame, cavity and installation annular intercommunication, the tip of protection frame extend to the inside of cavity, the metal frame is provided with the adjusting part that two tight pieces of clamp of drive are close to each other or keep away from.

Through adopting above-mentioned technical scheme, install the protective frame in the inside of installation annular, then order about two through adjusting part and press from both sides tight piece and be close to each other for two tight pieces of clamp can press from both sides tight protective frame, realize the fixed mounting to protective frame, convenient operation, the installation is swift.

Optionally, the adjusting assembly includes a fixed sleeve fixedly arranged in the cavity, a movable rod is arranged in the fixed sleeve, the movable rod is connected with the fixed sleeve in a sliding manner, a connecting rod is arranged between the movable rod and the two clamping blocks, one end of the connecting rod is hinged to the movable rod, the other end of the connecting rod is hinged to the clamping block, the two connecting rods are arranged on two sides of the movable rod, when the protective frame is inserted into the mounting ring groove, the movable rod is in contact with the bottom wall of the fixed sleeve, and at the moment, the two clamping blocks clamp the protective frame; the metal frame is provided with a locking assembly for keeping the clamping block in a clamping state on the metal frame, and the metal frame is provided with a limiting structure for preventing the clamping block from moving along the axis direction of the movable rod.

Through adopting above-mentioned technical scheme, when installing the protective frame in the inside of installation annular, the protective frame can act on the movable rod, promotes the movable rod and removes to the one side that is close to the fixed sleeve diapire, and the in-process that the movable rod moved down can stimulate the connecting rod, can stimulate under the effect of two connecting rods and press from both sides tight piece, and two tight pieces of clamp can move in opposite directions under the pulling effect of connecting rod, realize pressing from both sides tight fixedly to the protective frame.

Optionally, the limiting structure comprises a sliding block fixedly arranged on the clamping block, the metal frame is provided with a sliding groove, the sliding block is connected with the sliding groove in a sliding manner, and one end, far away from the movable rod, of the connecting rod is hinged to the sliding block.

By adopting the technical scheme, when the connecting rod acts on the clamping block, the clamping block can only move along the length direction of the sliding groove under the matching action of the sliding block and the sliding groove; meanwhile, the friction force between the clamping block and the metal frame can be reduced due to the arrangement of the sliding block and the sliding groove, and the clamping block can conveniently slide in the metal frame.

Optionally, the locking assembly includes a toothed ring sleeved outside the fixing sleeve, the toothed ring is in threaded connection with the fixing sleeve, and the metal frame is provided with a driving assembly for driving the toothed ring to move along the axial direction of the fixing sleeve; the fixed sleeve is uniformly provided with a plurality of tightening rods along the circumferential direction, the fixed sleeve is provided with a slot communicated with the inside and the outside of the fixed sleeve along the radial direction of the fixed sleeve, the tightening rods are inserted in the slot and can only move back and forth along the slot, an annular groove is formed in the gear ring, and the bottom wall of the annular groove is an inclined plane;

when the puller rod is contacted with one end of the inclined plane far away from the opening of the annular groove, the movable rod can displace along the axial direction of the fixed sleeve;

when the tightening rod is contacted with one end of the inclined plane close to the opening of the annular groove, the position of the movable rod can be limited.

Through adopting above-mentioned technical scheme, rotate through drive assembly drive ring gear, because ring gear and fixed sleeve threaded connection, and fixed sleeve fixes the inside at the metal frame, make the ring gear can follow fixed sleeve's axis direction displacement from top to bottom, meanwhile, fixed sleeve's inclined plane can act on the tip of tightening rod, promote tightening rod and remove along fixed sleeve's radial direction, when fixed sleeve moves to the inclined plane and is close to ring channel open-ended one end and inclined plane and keep away from ring channel open-ended one end contact, fixed sleeve can order about the tight movable rod in tightening rod top, the realization is to the position restriction of movable rod.

Optionally, the driving assembly includes a rack slidably disposed on the metal frame, the rack is engaged with the gear ring, the metal frame is provided with a via hole for the rack to pass through, and the rack is partially disposed inside the cavity and partially disposed outside the cavity; and an elastic part for keeping the puller rod and the inclined plane to be contacted with one side of the opening of the annular groove is arranged between the metal frame and the rack.

Through adopting above-mentioned technical scheme, order about the rack and slide in the metal crate is inside, because rack and ring gear meshing, the rack can order about the ring gear at the in-process of motion and rotate, because ring gear and fixed sleeve threaded connection for the ring gear can be followed fixed sleeve axis direction displacement.

Optionally, a blocking piece is fixedly arranged on the rack, the elastic piece is arranged between the blocking piece and the metal frame, one end of the elastic piece is fixedly connected with the blocking piece, and the other end of the elastic piece is fixedly connected with the metal frame.

Through adopting above-mentioned technical scheme, the in-process that the rack removed can drive the separation blade synchronous motion on it, because elastic component and separation blade fixed connection for elastic deformation takes place for the elastic component, when removing the effort to the rack, the elastic component can drive the rack normal position that restores, makes tightening rod and inclined plane be close to ring channel opening one side contact, and tightening rod top tight movable rod.

In summary, the present application has the following beneficial effects:

firstly, an installation ring groove is formed in the outer side of a metal frame, and a protective frame is installed inside the installation ring groove, so that the flatness of the outer side of a metal door and window can be kept, and the integral attractiveness is not easily damaged; because the protection piece is fixedly connected with the protection frame, after the window sash is opened, the protection piece is arranged on the outer side of the metal frame, so that the use safety of the metal door and window is improved;

second, when installing the protective frame in the inside of installation annular, the protective frame can act on the movable rod, promote the movable rod to the one side removal that is close to the fixed sleeve diapire, the in-process that the movable rod moved down can stimulate the connecting rod, can stimulate under the effect of two connecting rods and press from both sides tight piece, two press from both sides tight piece and can move in opposite directions under the pulling effect of connecting rod, the realization is fixed to the clamp of protective frame, can realize fixing the clamp of protective frame in the in-process of installation protective frame is tight in step, and convenient for operation is convenient for realize the dismantlement and the installation to the protective frame.

Drawings

Fig. 1 is a schematic view of an overall structure of a protective metal door window according to an embodiment of the present application;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a schematic view of the connection between the protective frame, the clamping block and the adjustment assembly of the embodiment of the present application;

fig. 6 is an enlarged view of a portion C in fig. 5.

In the figure, 1, a metal frame; 11. mounting a ring groove; 12. a cavity; 13. a strip-shaped through hole; 2. a window sash; 3. a protective frame; 31. a guard; 311. weaving wires; 312. mesh openings; 4. a connecting mechanism; 41. a clamping block; 42. an adjustment assembly; 421. a movable rod; 422. fixing the sleeve; 4221. a slot; 423. a connecting rod; 5. a limiting structure; 51. a slider; 52. a guide seat; 521. a chute; 6. a locking assembly; 61. a toothed ring; 611. an annular groove; 62. a tightening rod; 7. a drive assembly; 71. a rack; 72. a baffle plate; 73. a compression spring; 8. a cross bar.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, for the protection type metal door and window that this application discloses, including metal frame 1 and install casement 2 on metal frame 1, casement 2 is two, and two casement 2 set up side by side along the width direction of metal frame 1, and two casement 2 homoenergetic move along the length direction of metal frame 1, and casement 2 and metal frame 1 sliding connection.

With reference to fig. 1 and 2, the metal frame 1 is rectangular, and when the metal frame is installed, the metal frame 1 is fixedly connected with a wall, and the outward side of the metal frame 1 is detachably provided with a protective frame 3. Installation annular groove 11 has been seted up in the outside of metal frame 1, and installation annular groove 11 sets up to the rectangle annular groove, and the edge of protective frame 3 is pegged graft in the inside of installation annular groove 11, and protective frame 3's thickness is less than metal frame 1's thickness for the outer terminal surface of protective frame 3 is difficult for outstanding metal frame 1 lateral surface, keeps the holistic aesthetic property of metal frame 1.

Referring to fig. 1, the protection frame 3 is rectangular, a mounting opening is formed in the middle of the protection frame 3, the mounting opening is rectangular, and the area of the mounting opening is larger than the area of the two sashes 2 in the closed state. The protection frame 3 is fixedly provided with a protection member 31 inside the mounting opening, and the protection member 31 includes a braided wire 311 and a mesh 312 surrounded by the braided wire 311. The braided wire 311 is preferably made of a rigid wire having a certain strength, and braided wires 311 of different diameters are selected depending on the strength of the shield member 31 required. Braided wire 311 is many, and many braided wires 311 can set up side by side along 3 width direction of protective frame, and many braided wires 311 also can set up side by side along 3 direction of height of protective frame for enclose into banding mesh 312 between the adjacent braided wire 311, under the effect of protection piece 31, can open the back at casement 2 and realize the safety protection to metal door and window.

Referring to fig. 3 and 4, two sets of connecting mechanisms 4 are disposed between the protection frame 3 and the metal frame 1, and the two sets of connecting mechanisms 4 are disposed on two sides of the protection frame 3 along the width direction of the protection frame 3. The protective frame 3 is detachably connected with the metal frame 1 through the connecting mechanism 4, so that the protective frame 3 can be conveniently installed and detached.

Referring to fig. 4, the connecting mechanism 4 includes two oppositely disposed clamping blocks 41, and an adjusting assembly 42 for driving the two clamping blocks 41 toward or away from each other.

Referring to fig. 4, two clamp blocks 41 set up respectively in the inside and outside both sides of protective frame 3, and the vertical cross-section of clamp block 41 is right trapezoid and sets up, and the right-angle side of two clamp blocks 41 sets up relatively, and when clamp block 41 pressed from both sides tight protective frame 3, the right-angle side and the laminating of protective frame 3 edge of clamp block 41.

Referring to fig. 4, a cavity 12 is formed in the lower frame of the metal frame 1, and the cavity 12 is disposed along the length direction of the lower frame of the metal frame 1. A strip-shaped through hole 13 is formed in the top wall of the cavity 12, the cavity 12 is communicated with the mounting ring groove 11 through the strip-shaped through hole 13, and the lower frame of the metal frame 1 extends to the inside of the cavity 12.

Referring to fig. 5 and 6, the adjusting assembly 42 includes a movable rod 421 disposed inside the cavity 12, a fixed sleeve 422 sleeved outside the movable rod 421, and a connecting rod 423 disposed between the movable rod 421 and the clamping block 41.

Referring to fig. 4 and 6, the fixing sleeve 422 is vertically disposed, and the fixing sleeve 422 is formed in a cylindrical shape with both ends open. The lower extreme of fixed sleeve 422 and the diapire fixed connection of cavity 12, the lower extreme of movable rod 421 can be followed the upper end opening part of fixed sleeve 422 and inserted the inside of fixed sleeve 422, reserves the activity space between the lower extreme of movable rod 421 and the fixed sleeve 422 diapire, and movable rod 421 can slide from top to bottom along the axis direction of fixed sleeve 422. The upper end of the movable rod 421 extends to the inside of the installation ring groove 11, and when the protective frame 3 is inserted into the installation ring groove 11, the protective frame 3 can push the movable rod 421 to move downwards.

Referring to fig. 4 and 6, the link 423 is a metal plate having two arc-shaped ends, and the link 423 is hinged to an outer wall of the movable rod 421. Two links 423 are provided, and the two links 423 are provided symmetrically about the axis of the movable rod 421. During the up-and-down displacement of the movable rod 421, an upward pushing or downward pulling force can be applied to the connecting rods 423, so that the ends of the two connecting rods 423 far away from the movable rod 421 are far away from or close to each other.

With reference to fig. 4 and 6, one end of the connecting rod 423, which is away from the movable rod 421, is hinged to the corresponding clamping block 41, the metal frame 1 is provided with a limiting structure 5 for preventing the clamping block 41 from moving along the axial direction of the movable rod 421, and under the action of the limiting structure 5, the connecting rod 423 can drive the clamping block 41 to reciprocate only along the length direction of the metal frame 1.

With reference to fig. 4 and 6, the limiting structure 5 includes a sliding block 51 fixedly disposed on the clamping block 41, the sliding block 51 and the movable rod 421 are vertically disposed, and a vertical cross-section of the sliding block 51 is disposed in a T shape. The cavity 12 is internally and fixedly provided with two guide seats 52, the two guide seats 52 are respectively arranged at two sides of the protection frame 3, and the fixing sleeve 422 is vertically arranged between the two guide seats 52. The guide holder 52 is correspondingly provided with a sliding chute 521 for the sliding block 51 to insert, the sliding chute 521 is a T-shaped groove, the sliding block 51 is connected with the sliding chute 521 in a sliding manner, and one end of the connecting rod 423, which is far away from the movable rod 421, is hinged to the lower end face of the corresponding sliding block 51. In the process of vertical displacement of the movable rod 421, the sliding block 51 can be driven to displace along the length direction of the sliding groove 521, so that the distance between the two clamping blocks 41 can be adjusted.

Referring to fig. 4 and 6, the metal frame 1 is provided with a locking assembly 6 for maintaining a state that the clamping block 41 clamps the metal frame 1, the locking assembly 6 includes a toothed ring 61 sleeved outside the fixing sleeve 422, an inner circumferential wall of the toothed ring 61 is provided with an inner thread, an outer circumferential wall of the fixing sleeve 422 is provided with an outer thread, and the toothed ring 61 is in threaded connection with the fixing sleeve 422. The fixed sleeve 422 is provided with a plurality of tightening rods 62 near the upper end opening thereof, and the tightening rods 62 are uniformly distributed along the circumferential direction of the fixed sleeve 422. The fixing sleeve 422 is provided with an insertion groove 4221 communicating the inside and the outside of the fixing sleeve 422 along the radial direction, the tightening rod 62 is inserted into the insertion groove 4221 and can only move back and forth along the insertion groove 4221, and the gear ring 61 can drive the tightening rod 62 to move back and forth along the insertion groove 4221.

With reference to fig. 4 and 6, an annular groove 611 is formed in the inner wall of the gear ring 61, an open end of the annular groove 611 faces the fixing sleeve 422, a bottom wall of the annular groove 611 is provided with an inclined surface, the inclined surface is inclined inward from top to bottom along the axial direction of the gear ring 61, and a vertical cross section of the annular groove 611 is provided with a right triangle. When the movable rod 421 is inserted into the fixed sleeve 422, the end of the tightening rod 62 can always be in contact with the inclined surface. Rotate the ring gear 61, the ring gear 61 can be followed fixed sleeve 422 axis displacement, and when one side and the tight pole 62 contact of top that the inclined plane is close to fixed sleeve 422, a plurality of tight poles 62 can push up the movable rod 421, and then can restrict the position of movable rod 421, and the difficult fixed sleeve 422 axis direction displacement of following of movable rod 421 this moment. When the side of the inclined surface away from the fixed sleeve 422 contacts with the tightening rod 62, the limit of the tightening rod 62 on the movable rod 421 can be released, so that the movable rod 421 can be displaced along the axial direction of the fixed sleeve 422.

Referring to fig. 4 and 6, the metal frame 1 is provided with a driving assembly 7 for driving the gear ring 61 to rotate, and the driving assembly 7 includes a rack 71 slidably disposed on the metal frame 1, a blocking piece 72 fixedly disposed on the rack 71, and an elastic member disposed between the blocking piece 72 and the metal frame 1.

Referring to fig. 4 and 6, a through hole for the rack 71 to pass through is formed in the inner side surface of the metal frame 1, the through hole is communicated with the inside and the outside of the cavity 12, the rack 71 is partially located inside the cavity 12, partially penetrates through the through hole and extends to the outside of the cavity 12, and the rack 71 is connected with the metal frame 1 in a sliding manner.

Referring to fig. 4 and 6, the rack 71 inside the cavity 12 is engaged with the toothed ring 61, the rack 71 can drive the toothed ring 61 to rotate by drawing the rack 71, the toothed ring 61 can move up and down along the axis of the fixed sleeve 422 due to the threaded connection between the toothed ring 61 and the fixed sleeve 422, and when the upper side wall of the annular groove 611 is tangent to the outer arm of the tightening rod 62 when the toothed ring 61 moves, the position of the toothed ring 61 can be limited, so that the engaged state of the toothed ring 61 and the rack 71 is maintained.

Referring to fig. 4 and 6, a flap 72 is provided inside the cavity 12, the flap 72 extends in a radial direction of the rack 71, and the flap 72 and the rack 71 are integrally formed. The elastic piece is a compression spring 73, the compression spring 73 is sleeved outside the rack 71, the compression spring 73 is positioned on one side of the blocking piece 72 far away from the toothed ring 61, one end of the compression spring 73 is fixedly connected with the blocking piece 72, the other end of the compression spring 73 is fixedly connected with the inner wall of the metal frame 1, when the rack 71 is pulled, the rack 71 can drive the blocking piece 72 to act on the compression spring 73, the compression spring 73 is in a compression state, and at the moment, the tightening rod 62 is contacted with one side of the inclined plane far away from the fixed sleeve 422; when the pulling of the rack 71 is released, the compression spring 73 can drive the rack 71 to return to the original position, so that the tightening rod 62 is restored to the state of being in contact with the side of the inclined surface close to the fixed sleeve 422.

With reference to fig. 4 and 6, a cross bar 8 is fixedly arranged between two racks 71 located outside the metal frame 1, and two ends of the cross bar 8 are respectively fixedly connected with the racks 71, so that the two racks 71 can be synchronously driven.

The implementation principle of the embodiment is as follows: during installation, the protective frame 3 is aligned to the installation ring groove 11, then the edge of the upper end of the protective frame 3 is obliquely inserted into the installation ring groove 11, the cross rod 8 is pulled outwards, and the cross rod 8 drives the rack 71 to move, so that the arrangement of the tightening rod 62 does not hinder the movement of the movable rod 421; then, the lower end of the protective frame 3 is directly pulled into the mounting ring groove 11, so that the protective frame 3 can be clamped into the mounting ring groove 11, when the protective frame 3 is clamped into the mounting ring groove 11, the protective frame 3 can push the movable rod 421 to move downwards, the movable rod 421 can apply a downward pulling acting force to the connecting rods 423, so that one ends, far away from the movable rod 421, of the two connecting rods 423 are close to each other, the connecting rods 423 pull the corresponding sliding sliders 51 to move along the length direction of the sliding grooves 521, and at the moment, the two clamping blocks 41 can be close to each other under the driving of the sliding blocks 51, so that the protective frame 3 is clamped; meanwhile, the movable rod 421 can act on the tightening rod 62, so that the end of the tightening rod 62 is in contact with the inclined surface of the annular groove 611, the cross rod 8 is released from being pulled, the compression spring 73 can drive the rack 71 to return to the original position, the tightening rod 62 is in a state of being in contact with one side of the inclined surface close to the fixed sleeve 422, the protection frame 3 is clamped and fixed, and after the window sash 2 is opened, the protection piece 31 is arranged on the outer side of the metal frame 1, and the use safety of the metal door and window is improved.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a protection type metal door and window, includes metal frame (1) and installs casement (2) on metal frame (1), its characterized in that, installation annular (11) have been seted up in the outside of metal frame (1), the inside demountable installation of installation annular (11) has protecting frame (3), be provided with coupling mechanism (4) between metal frame (1) and protecting frame (3), the installing port has been seted up in protecting frame (3), the area of installing port is greater than the area of casement (2), fixed mounting has guard (31) in the installing port.

2. A protected metal door and window according to claim 1, characterized in that said protection element (31) comprises a braided wire (311) and a mesh (312) surrounded by the braided wire (311).

3. A protected metal door and window according to claim 2, characterized in that said braided wire (311) is a rigid wire with a certain strength.

4. The protective metal door and window as claimed in claim 1, wherein the connecting mechanism (4) comprises two oppositely arranged clamping blocks (41), the two clamping blocks (41) are respectively arranged on the inner side and the outer side of the protective frame (3), the metal frame (1) is provided with a cavity (12), the cavity (12) is communicated with the mounting ring groove (11), the end of the protective frame (3) extends into the cavity (12), and the metal frame (1) is provided with an adjusting assembly (42) for driving the two clamping blocks (41) to approach to or keep away from each other.

5. The protected metal door and window according to claim 4, wherein the adjusting assembly (42) comprises a fixed sleeve (422) fixedly arranged in the cavity (12), a movable rod (421) is arranged in the fixed sleeve (422), the movable rod (421) is slidably connected with the fixed sleeve (422), a connecting rod (423) is respectively arranged between the movable rod (421) and the two clamping blocks (41), one end of the connecting rod (423) is hinged with the movable rod (421), the other end of the connecting rod is hinged with the clamping blocks (41), the two connecting rods (423) are respectively arranged at two sides of the movable rod (421), when the protective frame (3) is inserted in the installation ring groove (11), the movable rod (421) is contacted with the bottom wall of the fixed sleeve (422), and at the moment, the two clamping blocks (41) clamp the protective frame (3); the metal frame (1) is provided with a locking assembly (6) for keeping the clamping block (41) in a clamping state on the metal frame (1), and the metal frame (1) is provided with a limiting structure (5) for preventing the clamping block (41) from moving along the axis direction of the movable rod (421).

6. The protective metal door and window as claimed in claim 5, wherein the limiting structure (5) comprises a sliding block (51) fixedly arranged on the clamping block (41), the metal frame (1) is provided with a sliding groove (521), the sliding block (51) is connected with the sliding groove (521) in a sliding manner, and one end of the connecting rod (423) far away from the movable rod (421) is hinged to the sliding block (51).

7. The protected metal door and window according to claim 5, wherein the locking assembly (6) comprises a toothed ring (61) sleeved outside the fixing sleeve (422), the toothed ring (61) is in threaded connection with the fixing sleeve (422), and the metal frame (1) is provided with a driving assembly (7) for driving the toothed ring (61) to displace along the axial direction of the fixing sleeve (422); the fixing sleeve (422) is uniformly provided with a plurality of tightening rods (62) along the circumferential direction, the fixing sleeve (422) is provided with an insertion groove (4221) which is communicated with the inside and the outside of the fixing sleeve (422) along the radial direction of the fixing sleeve, the tightening rods (62) are inserted into the insertion groove (4221) and can only move back and forth along the insertion groove (4221), an annular groove (611) is formed in the gear ring (61), and the bottom wall of the annular groove (611) is provided with an inclined surface;

when the tightening rod (62) is contacted with one end of the inclined plane far away from the opening of the annular groove (611), the movable rod (421) can be displaced along the axial direction of the fixed sleeve (422);

when the tightening rod (62) contacts with one end of the inclined surface close to the opening of the annular groove (611), the position of the movable rod (421) can be limited.

8. The protected metal door and window according to claim 7, wherein the driving assembly (7) comprises a rack (71) slidably disposed on the metal frame (1), the rack (71) is engaged with the toothed ring (61), the metal frame (1) is provided with a through hole for the rack (71) to pass through, the rack (71) is partially disposed inside the cavity (12) and partially disposed outside the cavity (12); an elastic piece for keeping the puller bar (62) and the side of the inclined plane close to the opening of the annular groove (611) in contact is arranged between the metal frame (1) and the rack (71).

9. The protected metal door and window as claimed in claim 8, wherein the rack (71) is fixedly provided with a blocking piece (72), the elastic member is arranged between the blocking piece (72) and the metal frame (1), one end of the elastic member is fixedly connected with the blocking piece (72), and the other end of the elastic member is fixedly connected with the metal frame (1).

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