Roller shutter door fence

Abstract

The invention discloses a roller shutter door fence which comprises a connecting mechanism used for being connected with the free end of a roller shutter, the connecting mechanism comprises a stand column and a seat body arranged on the stand column, the stand column can be vertically fixed to a position to be installed through the seat body, the length of the stand column is matched with the overall height of the roller shutter door fence, and certainly, the stand column can also be long. Therefore, during installation, the connecting mechanism does not need to carry out positioning work and can be directly installed at any position, after the roller shutter is pulled out, the free end of the roller shutter can be directly connected with the stand column or the base body and locked through the locking mechanism, and the roller shutter is simple in overall structure, can be directly installed, does not need to be positioned and installed according to the position of the roller shutter and is convenient to use. Compared with the prior art, the installation process of the whole roller shutter door fence is optimized, and the installation convenience of the whole roller shutter door fence is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of door barriers, and in particular to a roller shutter door barrier. BACKGROUND

[0002] In order to prevent infants, pets, etc. from walking out of the room and causing accidents such as getting lost and being hurt, people often set up retractable door barriers at positions such as doors, staircases or corridors in the room.

[0003] For example, a retractable protective door barrier disclosed in Chinese patent application No. CN202320165782.9 mainly includes upper and lower supports, a roller shutter assembly, a roller shaft and other components. The roller shaft is pivotally installed between the upper and lower supports. The roller shutter is installed on the roller shaft and can be pulled out for use. When not in use, the roller shaft is driven to rotate and the roller shutter is retracted by the elastic torsional force of the spring. The free end of the roller shutter (i.e. the end of the roller shutter away from the roller shaft) is provided with two hooks. The two hooks are vertically spaced apart. After the retractable door barrier is installed, two buckles need to be installed at another installation position. The heights of the two buckles need to be consistent with those of the two hooks. In this way, after the roller shutter is pulled out, the roller shutter can be fixed by the connection and cooperation of the two buckles and the two hooks. When the roller shutter needs to be retracted, the cooperation of the buckle and the hook is released.

[0004] The installation of the buckle is very troublesome. The reason is that in order to maintain the flatness of the roller shutter, the number of buckles is usually two. The buckles need to be positioned and installed according to the height position of the hooks. Often, after the buckles are installed, there is a height difference between the hooks and the buckles, which causes the buckles and the hooks to be misaligned and unable to be buckled. The buckles have to be repositioned and installed.

[0005] Therefore, the applicant believes that it is necessary to propose a connection mechanism that can be directly installed without positioning and installing according to the position of the roller shutter. SUMMARY

[0006] The main purpose of the present application is to propose a roller shutter door barrier, which aims to solve the problems proposed in the background.

[0007] To achieve the above-mentioned purpose, the present application proposes a roller shutter door barrier, which comprises an upper support, a lower support, a roller shaft pivotally installed between the upper support and the lower support, and a roller shutter provided on the roller shaft. The roller shutter door barrier further comprises a connection mechanism for connecting the free end of the roller shutter. The connection mechanism comprises a stand, which is provided with a seat body for connecting with the installation position. The stand can be vertically fixed to the installation position through the seat body. The connection mechanism is further provided with a locking mechanism for locking the free end of the roller shutter.

[0008] The technical scheme of the present application comprises a connecting mechanism for connecting with the free end of a roller shutter, which comprises a stand column and a seat body arranged on the stand column, the stand column can be fixed in a vertical form on the seat body at a position to be installed, the length of the stand column is adapted to the overall height of the roller shutter door bar, and the stand column can be longer, thus, during installation, the connecting mechanism does not need to be positioned, and can be directly installed at any position, and after the roller shutter is pulled out, the free end of the roller shutter can be directly connected with the stand column or the seat body and locked by a locking mechanism, the overall structure of the present application is simple, and the installation can be directly performed without positioning according to the position of the roller shutter, compared with the traditional one, the installation process of the overall roller shutter door bar is optimized, and the installation convenience of the overall roller shutter door bar is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is a perspective view of the present application;

[0010] Fig. 2 It is an assembly view of the upper connecting seat, the lower connecting seat and the supporting rod;

[0011] Fig. 3 It is a perspective view of the upper connecting seat, the lower connecting seat and the moving seat;

[0012] Fig. 4 It is a sectional view of the upper connecting seat;

[0013] Fig. 5 It is an exploded view of the upper connecting seat;

[0014] Fig. 6 It is an exploded view of the moving seat. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0016] It should be noted that if the directionality indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, …) is involved in the embodiments of the present application, the directionality indication is only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directionality indication also changes accordingly.

[0017] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0018] This invention proposes a roller shutter door railing.

[0019] In embodiments of the present invention, such as Figs. 1 to 6 As shown, the roller shutter door frame includes an upper support 1, a lower support 2, a roller 3 pivotally mounted between the upper support 1 and the lower support 2, and a roller shutter 4 mounted on the roller 3. It also includes a connecting mechanism for connecting to the free end of the roller shutter 4. The connecting mechanism includes a column 5, which has a seat for connecting to the installation position. The column 5 can be vertically fixed to the installation position through the seat. The connecting mechanism also has a locking mechanism for locking the free end of the roller shutter.

[0020] The technical solution of this invention includes a connecting mechanism for connecting to the free end of a roller shutter. The connecting mechanism includes a column and a base disposed on the column. The column can be fixed vertically to the installation position through the base. The length of the column is suitable for the overall height of the roller shutter frame, and can also be longer. Therefore, during installation, the connecting mechanism does not require positioning work and can be directly installed in any position. After the roller shutter is pulled outward, the free end of the roller shutter can be directly connected to the column or base and locked by a locking mechanism. The overall structure of this invention is simple and can be directly installed without positioning according to the position of the roller shutter. Compared with the traditional method, it optimizes the overall installation process of the roller shutter frame and effectively improves the overall installation convenience of the roller shutter frame.

[0021] Specifically, the free end of the roller shutter 4 is detachably connected with the stand 5 or the connecting seat. In the embodiment that the free end of the roller shutter 4 is detachably connected with the stand 5, the free end of the roller shutter 4 is provided with a hook which is capable of being hooked with the stand 5. After the roller shutter 4 is pulled out, the free end of the roller shutter 4 is fixed by the hooking cooperation between the hook and the stand 5. In order to strengthen the connection between the free end of the roller shutter 4 and the connecting mechanism and avoid the easy separation between the hook and the stand 5, the hook and the stand 5 can be locked by the locking structure in the prior art after the hooking cooperation, such as screw locking, buckle structure fixing, etc. The specific structure and principle will not be described here. Of course, in this embodiment, the hook can also be replaced by a strap, a ring buckle, a rope with a magic tape, etc.

[0022] In the embodiment, the free end of the roller shutter 4 is detachably connected with the connecting seat. The free end of the roller shutter 4 is provided with a support rod 41. The seat body includes an upper connecting seat 6 and a lower connecting seat 7 which are respectively arranged at the top end and the bottom end of the stand 5. The bottom of the upper connecting seat 6 and the top of the lower connecting seat 7 are respectively formed with a first clamping groove 61 and a second clamping groove 71 which are capable of clamping the top end and the bottom end of the support rod 41. The locking mechanism is used to lock the support rod 41 and the seat body after the top end and the bottom end of the support rod 41 are respectively clamped in the first clamping groove 61 and the second clamping groove 71.

[0023] Specifically, the upper connecting seat 6 and the lower connecting seat 7 are integrally formed with the stand 5 or are detachably connected with the stand 5. When they are detachably connected, the upper connecting seat 6 and the lower connecting seat 7 are respectively inserted into the top end and the bottom end of the stand 5 and then are fixed by screw locking or buckle structure.

[0024] Specifically, the locking mechanism includes a first sliding block 81. The top wall of the first clamping groove 61 is formed with a vertical extension accommodating groove 60 which is suitable for the first sliding block 81. The first sliding block 81 is movably installed in the accommodating groove 60 and can do vertical reciprocating motion relative to the accommodating groove 60.

[0025] In an embodiment, the top end of the support rod 41 is provided with a locking hole, and after the top end of the support rod 41 is clamped into the first clamping groove 61, the locking hole is aligned with the first slider 81 vertically. When installing the support rod 41, first, the bottom end of the support rod 41 is inserted into the second clamping groove 71, and then the top end of the support rod 41 is clamped into the first clamping groove 61. After the locking hole is aligned with the first slider 81 vertically, the first slider 81 is lowered to the lower end of the first slider 81 is inserted into the locking hole, so that the top end of the support rod 41 cannot be taken out of the first clamping groove 61, thereby locking the top end of the support rod 41 with the upper connecting seat 6. At the same time, because the top end of the support rod 41 is locked, the bottom end of the support rod 41 also cannot be taken out of the second clamping groove 71, thereby locking the support rod 41 with the seat body. When the first slider 81 is raised and the lower end of the first slider 81 is taken out of the locking hole, the locking of the support rod 41 with the seat body can be released. In this embodiment, the length of the first slider 81 is relatively long. As to how to drive the first slider 81 to make vertical reciprocating motion in this embodiment, a driving member connected with the first slider 81 can be arranged on the upper connecting seat 6, and the first slider 81 can be driven to make vertical reciprocating motion by manually controlling the driving member. Of course, the driving structure in the prior art can also be referred to, and will not be described here.

[0026] In this embodiment, the top end of the support rod 41 is movably provided with a locking member 82, which can move between a position of being withdrawn into the support rod 41 and a position of being extended into the accommodating groove 60 to force the first slider 81 to make upward motion. The support rod 41 is provided with a first top spring 83 connected with the locking member 82, and the first top spring 83 applies elastic force to the locking member 82 to move in the direction of forcing the first slider 81 to make upward motion. When installing the support rod 41, first, the bottom end of the support rod 41 is inserted into the second clamping groove 71, and then the top end of the support rod 41 is clamped into the first clamping groove 61. The locking member 82 can be forced to be pushed into the support rod 41 by external force such as manual pressing, and at the same time, the top end of the support rod 41 is clamped into the first clamping groove 61. Alternatively, the locking member 82 can be forced to be automatically withdrawn into the support rod 41 by the pressure generated when the outer wall of the upper connecting seat 6 contacts the locking member 82 during clamping. When the top end of the support rod 41 is clamped into the first clamping groove 61, the external force applied to the locking member 82 disappears, and the elastic force of the first top spring 83 forces the locking member 82 to extend into the accommodating groove 60 and lift the first slider 81. When the locking member 82 is located in the accommodating groove 60, the top end of the support rod 41 cannot be taken out of the first clamping groove 61, thereby locking the top end of the support rod 41 with the upper connecting seat 6. At the same time, because the top end of the support rod 41 is locked, the bottom end of the support rod 41 also cannot be taken out of the second clamping groove 71, thereby locking the support rod 41 with the seat body. After the locking of the top end of the support rod 41 is released by the first slider 81 being lowered to contact the locking member 82 and forcing the locking member 82 to be withdrawn into the support rod 41, the top end of the support rod 41 is taken out of the first clamping groove 61, and then the bottom end of the support rod 41 is taken out of the second clamping groove 71, thereby completing the disassembly of the support rod 41 and the connecting mechanism.

[0027] Specifically, in the embodiment, the locking mechanism further comprises a second slider 84 and a third slider 85. The second slider 84 is movably mounted at the bottom of the upper connecting seat 6 and can move vertically relative to the upper connecting seat 6. The upper end of the second slider 84 is located in the upper connecting seat 6. The third slider 85 is movably mounted in the upper connecting seat 6. The side of the third slider 85 close to the first slider 81 is provided with a first inclined surface 851 for contacting the first slider 81, and the side of the third slider 85 close to the second slider 84 is provided with a second inclined surface 852 for contacting the upper end of the second slider 84. The inclination directions of the first inclined surface 851 and the second inclined surface 852 are opposite. The third slider 85 can move between a position where the first slider 81 is forced to move downward by the first inclined surface 851 and a position where the second slider 84 is forced to move downward by the second inclined surface 852. When the second slider 84 is forced to move upward by an external force such as manual pressing, the upper end of the second slider 84 contacts the second inclined surface 852 and forces the third slider 85 to move towards the first slider 81. During the movement, the upper end of the first slider 81 contacts the first inclined surface 851 and is forced to move downward by the first inclined surface 851, so as to force the locking piece 82 to retreat into the inner part of the supporting rod 41. Conversely, when the locking piece 82 forces the first slider 81 to move upward, the upper end of the first slider 81 contacts the first inclined surface 851 and forces the third slider 85 to move towards the second slider 84, so as to reset the third slider 85.

[0028] Specifically, the side of the second slider 84 is provided with a guide groove 841. The bottom of the upper connecting seat 6 is provided with a through groove 62 through which the second slider 84 can pass vertically. The through groove 62 is in communication with the inner part of the upper connecting seat 6. The first limiting part 63 is arranged in the through groove 62 and can extend into the guide groove 841. The second slider 84 can be limited from separating from the through groove 62 by the first limiting part 63 abutting against the top of the guide groove 841.

[0029] Specifically, the guide groove 841 is provided with a second tension spring 86. The upper end and the lower end of the second tension spring 86 abut against the bottom wall of the upper connecting seat 6 and the bottom wall of the guide groove 841, respectively. The second tension spring 86 can apply a spring force to the second slider 84 to move in the direction of exiting the through groove 62.

[0030] Specifically, the side of the first limiting part 63 close to the second tension spring 86 and the bottom wall of the guide groove 841 are both provided with columnar bodies. The upper end and the lower end of the second tension spring 86 are sleeved on the columnar bodies, respectively.

[0031] Specifically, the top wall of the third slider 85 is provided with a first mark 853 and a second mark 854 adjacent to each other, and the top wall of the upper connecting seat 6 is provided with an observation window 64 in communication with the inside of the upper connecting seat 6. When the third slider 85 moves to make the locking piece 82 push into the inside of the support rod 41, the first mark 853 is aligned with the observation window 64 vertically. When the third slider 85 moves to make the locking piece 82 extend into the accommodating groove 60, the second mark 854 is aligned with the observation window 64 vertically.

[0032] Specifically, the inside of the upper connecting seat 6 is provided with a moving channel 65 with an open bottom and an open top corresponding to the positions above and below the third slider 85 respectively, and the top wall and the bottom wall of the third slider 85 are provided with a guide part 855 for being inserted into the two moving channels 65 respectively. The third slider 85 can move along the moving channel 65 through the guide cooperation of the guide part 855 and the moving channel 65.

[0033] Specifically, the first clamping groove 61 is partially open for the top end of the support rod 41 to pass through, and an inclined extension pressing groove 611 is formed at the open position. During the process of the top end of the support rod 41 passing through the open position, the locking piece 82 can be forced to gradually push into the inside of the support rod 41 through the pressing groove 611.

[0034] Specifically, the inside of the upper connecting seat 6 is provided with a clamping position 66 corresponding to the position of the top of the accommodating groove 60, and the top of the first slider 81 is provided with a second limiting part 811 vertically abutting against the clamping position 66, so as to prevent the first slider 81 from completely entering the accommodating groove 60.

[0035] Specifically, in this embodiment, the first slider 81 can also realize contact through the first limiting part 63 and the first inclined surface 851.

[0036] Specifically, the edge of the free end of the roller shutter 4 is provided with a sleeve 42 for wrapping the support rod 41, and is also provided with a cap 43 for inserting the end of the support rod 41. After the support rod 41 is wrapped by the sleeve 42, the top end of the support rod 41 and the top of the sleeve 42 are covered and fixed by the cap 43, and the bottom end of the support rod 41 and the bottom of the sleeve 42 are also covered and fixed.

[0037] Specifically, the sleeve 42 is integrally formed with the roller shutter 4 or is a separate structure. When the sleeve 42 is integrally formed with the roller shutter 4, the sleeve 42 is formed after the edge of the free end of the roller shutter 4 is bent and fixed. When the sleeve 42 is a separate structure, the sleeve 42 is fixed to the edge of the free end of the roller shutter 4 by glue, needle sewing or buckle structure.

[0038] Specifically, the two ends of the support rod 41 are each provided with the cap 43, and the cap 43 is formed with a avoiding hole (not shown) corresponding to the position of the roller shutter 4 for the roller shutter 4 to pass through.

[0039] Specifically, a window 44 for holding the support rod 41 is arranged at the position where the free end of the roller shutter 4 is close to the support rod 41. When the roller shutter 4 is pulled out, the palm of the human body can hold the support rod 41 completely through the avoiding effect of the window 44, so as to avoid the problem that the roller shutter 4 is automatically retracted due to insufficient gripping position of the support rod 41 during the process of pulling out the roller shutter 4.

[0040] Specifically, the back of the upper connecting seat 6 is fixed on the to-be-installed position by double-sided adhesive or screw locking, or the following embodiment can be referred to: the upper connecting seat 6 is detachably inserted with a first plug plate 67 fixed (such as double-sided adhesive or screw fixing) on the to-be-installed position, the back of the upper connecting seat 6 is provided with a first plug groove 68 for inserting the first plug plate 67 from bottom to top, the first plug groove 68 movably has a first locking key 69 provided with a first locking portion 691 and a first driving portion 692, the first plug plate 67 is provided with a first locking position 671 for inserting the first locking portion 691, after the first plug plate 67 is inserted into the first plug groove 68, the first locking portion 691 is inserted into the first locking position 671 to limit the first plug plate 67 from exiting the first plug groove 68, and a third tension spring 693 is further arranged for applying elastic force to the first locking key 69 to move in the direction of inserting the first locking portion 691 into the first locking position 671. The first locking portion 691 can be unlocked by manually driving the first driving portion 692 to exit the first locking position 671.

[0041] Specifically, one side of the first locking key 69 is provided with an opening mark and a closing mark, and the upper connecting seat 6 is provided with a first observation port for observing the mark, when the first locking portion 691 is in the first locking position 671, the closing mark can be observed from the first observation port, and when the first locking portion 691 is not in the first locking position 671, the opening mark can be observed from the first observation port.

[0042] Specifically, the lower connecting seat 7 is directly connected and fixed with the installation position by screws or by a buckle structure, or the following embodiment can be referred to: since the installation environment of the present application is usually the indoor wall, and the bottom of the indoor wall is usually provided with a skirting line, the distance between the upper connecting seat 6 and the wall is different from the distance between the lower connecting seat 7 and the skirting line, so that the installation height of the lower connecting seat 7 can only be adjusted upward, but the height is too high, which causes the gap between the lower edge of the roller shutter 4 and the ground to be too large, and pets or infants can pass through the gap. In order to avoid these problems, in the present embodiment, the column 5 is movably sleeved with a moving seat 9 for fixed connection with the installation position, and the moving seat 9 can reciprocate along the column 5. When the installation position is the wall surface with the skirting line, since the moving seat 9 can reciprocate along the supporting rod 41, the moving seat 9 can be moved to a position above the skirting line on the wall surface and then fixed at the position, so as to replace the lower connecting seat 7 fixed on the installation position, and the installation height of the lower connecting seat 7 does not need to be adjusted upward, and the gap between the lower edge of the roller shutter 4 and the ground will not be too large.

[0043] Specifically, the moving seat 9 comprises a shell 91 and a cover 92, the front side of the shell 91 is provided with a groove 911 matched with the column 5, and the cover 92 is locked on the front side of the shell 91 and closes the groove 911 to form a channel with the top and bottom open and capable of partially covering the column 5.

[0044] Specifically, the front side of the shell 91 is provided with a plurality of positioning strips 912 corresponding to the positions on both sides of the groove 911, and the cover 92 is provided with a positioning groove (not shown) corresponding to the positions of the positioning strips 912, and the shell 91 and the cover 92 are assembled to be quickly positioned by the cooperation of the positioning strips 912 and the positioning groove (not shown).

[0045] Specifically, the bottom of the shell 91 is open, a support 93 is inserted into the shell 91 from bottom to top and locked, the support 93 is provided with a reinforcing strip screwed with the screw, the reinforcing strip is provided with a nut hole 94 through which the screw passes, and the nut hole 94 is fixed with a nut for screwing with the screw.

[0046] Specifically, the support 93 is locked by a screw after being inserted into the shell 91, and one side of the support 93 close to the rear side of the shell 91 is provided with a barb (not shown), and the rear side of the shell 91 is provided with a hook hole (not shown) corresponding to the position of the barb for the barb to be hooked into, so that the support 93 can be prevented from falling out of the inside of the shell 91 by the cooperation of the barb and the hook hole.

[0047] Specifically, the back of the mobile seat 9 is fixed by double-sided adhesive or locked by screws in the position to be installed, or the following embodiments can be referred to: the mobile seat 9 is detachably inserted with a second insertion plate 95 fixed (such as double-sided adhesive or screw fixing) in the position to be installed, the back of the mobile seat 9 is provided with a second insertion slot (not shown) for the second insertion plate 95 to be inserted from bottom to top, the second insertion slot (not shown) is movably provided with a second locking key 96 provided with a second locking portion and a second driving portion 961, the second insertion plate 95 is provided with a second locking position 951 for the second locking portion to be inserted, after the second insertion plate 95 is inserted into the second insertion slot (not shown), the second locking portion is inserted into the second locking position 951 to limit the second insertion plate 95 from exiting the second insertion slot (not shown), and a fourth tension spring 97 is further provided for applying elastic force to the second locking key 96 in the direction of the second locking portion inserted into the second locking position 951. The second locking portion can be unlocked by manually driving the second driving portion 961 to exit the second locking position 951.

[0048] Specifically, one side of the second locking key 96 is provided with an opening indication and a closing indication, and the mobile seat 9 is provided with a second observation port for observing the indication, when the second locking portion is in the second locking position 951, the closing indication can be observed from the second observation port, and when the second locking portion is not in the second locking position 951, the opening indication can be observed from the second observation port.

[0049] Specifically, the upper support 1 is installed in the position to be installed in the same way as the upper connecting seat 6. The lower support 2 is installed in the position to be installed in the same way as the mobile seat 9. Since the roller shutter door post and the connecting mechanism are assembled in the position to be installed by using the same buckle structure, the positions of the two can be arbitrarily exchanged, and the situation that the buckle structure is not adapted to cause the assembly to fail after the position is changed will not occur.

[0050] Specifically, the upper connecting seat 6 is made by splicing an upper cover and a base.

[0051] It should be noted that other structures of the roller shutter door post can refer to the prior art, and the specific structure principle will not be described here.

[0052] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A roller shutter door frame, comprising an upper support (1), a lower support (2), a roller shaft (3) pivotally mounted between the upper support (1) and the lower support (2), and a roller shutter (4) disposed on the roller shaft (3), characterized in that: It also includes a connecting mechanism for connecting to the free end of the roller blind (4), the connecting mechanism including a column (5), the column (5) having a seat for connecting to the installation position, the column (5) can be vertically fixed to the installation position through the seat, the connecting mechanism also having a locking mechanism for locking the free end of the roller blind.

2. The roller shutter door frame as described in claim 1, characterized in that: The free end of the roller blind (4) is provided with a support rod (41). The seat includes an upper connecting seat (6) and a lower connecting seat (7) respectively located at the top and bottom of the column (5). The bottom of the upper connecting seat (6) and the top of the lower connecting seat (7) are respectively formed with a first slot (61) into which the top of the support rod (41) can be inserted and a second slot (71) into which the bottom of the support rod (41) can be inserted. The locking mechanism is used to lock the support rod (41) to the seat after the top and bottom of the support rod (41) can be inserted into the first slot (61) and the second slot (71) respectively.

3. The roller shutter door frame as described in claim 2, characterized in that: The locking mechanism includes a first slider (81), and the top wall of the first slot (61) is formed with a vertically extending receiving groove (60) adapted to the first slider (81). The first slider (81) is movably installed in the receiving groove (60) and can make vertical reciprocating motion relative to the receiving groove (60).

4. The roller shutter door frame as described in claim 3, characterized in that: The top of the support rod (41) is movably provided with a locking member (82). The locking member (82) can move between the position of retracting into the support rod (41) and the position of extending into the receiving groove (60) to force the first slider (81) to move upward. The support rod (41) is provided with a first top spring (83) connected to the locking member (82). The first top spring (83) applies a spring force to the locking member (82) in the direction of forcing the first slider (81) to move upward.

5. The roller shutter door frame as described in claim 4, characterized in that: The locking mechanism further includes a second slider (84) and a third slider (85). The second slider (84) is movably mounted on the bottom of the upper connecting seat (6) and can reciprocate vertically relative to the upper connecting seat (6). The upper end of the second slider (84) is located inside the upper connecting seat (6). The third slider (85) is movably mounted inside the upper connecting seat (6). The third slider (85) has a first inclined surface (851) for contacting the first slider (81) and a second inclined surface (852) for contacting the upper end of the second slider (84) on the side near the first slider (81) and the side near the second slider (84), respectively. The first inclined surface (851) and the second inclined surface (852) have opposite inclination directions. The third slider (85) can move between the position where the first slider (81) is forced to move downward by the first inclined surface (851) and the position where the second slider (84) is forced to move downward by the second inclined surface (852).

6. The roller shutter door frame as described in claim 5, characterized in that: The second slider (84) has a guide groove (841) on one side. The bottom of the upper connecting seat (6) has a through groove (62) through which the second slider (84) can pass vertically. The through groove (62) is connected to the interior of the upper connecting seat (6). The through groove (62) has a first limiting part (63) that can extend into the guide groove (841). The second slider (84) can be restricted from leaving the through groove (62) by the first limiting part (63) abutting against the top of the guide groove (841).

7. The roller shutter door frame as described in claim 6, characterized in that: The guide groove (841) is provided with a second top spring (86). The upper and lower ends of the second top spring (86) abut against the bottom wall of the upper connecting seat (6) and the bottom wall of the guide groove (841) respectively. The second top spring (86) can apply a spring force to the second slider (84) to move in the direction of exiting the through groove (62).

8. The roller shutter door frame as described in claim 5, characterized in that: The top wall of the third slider (85) is provided with a first mark (853) and a second mark (854) adjacent to each other. The top wall of the upper connecting seat (6) is provided with an observation window (64) communicating with the interior of the upper connecting seat (6). When the third slider (85) moves to the point that the locking member (82) is pushed into the support rod (41), the first mark (853) is vertically aligned with the observation window (64). When the third slider (85) moves to the point that the locking member (82) extends into the receiving groove (60), the second mark (854) is vertically aligned with the observation window (64).

9. The roller shutter door frame as described in claim 5, characterized in that: The upper connecting seat (6) has a bottom-opening and a top-opening moving channel (65) respectively located above and below the third slider (85). The top and bottom walls of the third slider (85) are provided with guide parts (855) for inserting into the two moving channels (65) respectively. The third slider (85) can move along the moving channel (65) by cooperating with the guide parts (855) and the moving channel (65).

10. The roller shutter door frame as described in claim 4, characterized in that: The first slot (61) is partially open to allow the top of the support rod (41) to pass through, and an inclined groove (611) is formed in the open position. During the process of the top of the support rod (41) passing through the open position, the locking member (82) can be gradually pushed into the support rod (41) through the groove (611).

11. The roller shutter door frame as described in claim 5, characterized in that: The upper connecting seat (6) has a locking position (66) at the top of the receiving groove (60), and the top of the first slider (81) has a second limiting part (811) that can abut against the locking position (66) to prevent the first slider (81) from completely entering the receiving groove (60).

12. The roller shutter door frame as described in claim 2, characterized in that: The free end edge of the roller blind (4) is provided with a kit (42) for wrapping the support rod (41), and a cap (43) for inserting the end of the support rod (41). After the kit (42) wraps the support rod (41), the cap (43) covers and fixes the top of the support rod (41) to the top of the kit (42), and covers and fixes the bottom of the support rod (41) to the bottom of the kit (42).

13. The roller shutter door frame as described in claim 2, characterized in that: The roller blind (4) has a window (44) at the free end near the support rod (41) for easy gripping of the support rod (41).

14. The roller shutter door frame as described in claim 2, characterized in that: The upper connecting seat (6) is detachably provided with a first insert plate (67) for fixing in the position to be installed. The back of the upper connecting seat (6) is provided with a first slot (68) for the first insert plate (67) to be inserted from bottom to top. A first locking key (69) having a first locking part (691) and a first driving part (692) is movably provided in the first slot (68). The first insert plate (67) is provided with a first locking position (671) for the first locking part (691) to be inserted. After the first insert plate (67) is inserted into the first slot (68), the first locking part (691) is inserted into the first locking position (671) to restrict the first insert plate (67) from exiting the first slot (68). A third top spring (693) is provided to apply a spring force to the first locking key (69) to move in the direction of the first locking part (691) being inserted into the first locking position (671).

15. The roller shutter door frame as described in claim 14, characterized in that: The column (5) is movably fitted with a movable seat (9) for fixed connection with the installation position, and the movable seat (9) can reciprocate along the column (5).

16. The roller shutter door frame as described in claim 15, characterized in that: The movable seat (9) includes a housing (91) and a cover (92). The front side of the housing (91) is provided with a groove (911) that matches the column (5). The cover (92) is locked to the front side of the housing (91) by multiple bolts and closes the groove (911) to form a channel with an open top and bottom that can partially cover the column (5).

17. The roller shutter door frame as described in claim 15, characterized in that: The bottom of the housing (91) is open, and a bracket (93) is inserted into the housing (91) from bottom to top and locked. The bracket (93) is provided with a nut hole (94) through which the bolt can pass, and a nut for screwing with the bolt is fixed in the nut hole (94).

18. The roller shutter door frame as described in claim 15, characterized in that: The movable base (9) is detachably provided with a second insert plate (95) for fixing in the position to be installed. The back of the movable base (9) is provided with a second slot for the second insert plate (95) to be inserted from bottom to top. A second locking key (96) having a second locking part and a second driving part (961) is movably provided in the second slot. The second insert plate (95) is provided with a second locking position (951) for the second locking part to be inserted. After the second insert plate (95) is inserted into the second slot, the second locking part is inserted into the second locking position (951) to restrict the second insert plate (95) from exiting the second slot. A fourth top spring (97) is provided to apply a spring force to the second locking key (96) to move in the direction of the second locking part being inserted into the second locking position (951).

19. The roller shutter door frame as described in claim 18, characterized in that: The upper support (1) is installed in the same manner as the upper connecting seat (6) at the installation position. The lower support (2) is installed in the same manner as the movable seat (9) at the installation position.

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