Curtain body locking mechanism and roller shutter door fence with same

Abstract

The utility model discloses a curtain body locking mechanism and a roller shutter door fence with the same, the roller shutter door fence is provided with the curtain body locking mechanism, the curtain body locking mechanism mainly comprises a first connecting piece and a first connecting seat, the first connecting piece is arranged at the free end of a curtain body, and the first connecting seat is arranged at the free end of the curtain body. The first connecting seat is provided with a first clamping position and a locking mechanism, the first clamping position can allow the first connecting piece to partially extend into the first clamping position, the locking mechanism is used for locking the first connecting piece and the first connecting seat, and after the curtain body is unfolded, the part, located at the free end of the curtain body, of the first connecting piece extends into the first clamping position. And then the first connecting piece and the first connecting seat are locked through the locking mechanism, so that the free end of the curtain body is locked. Compared with a traditional hook matching mode, the curtain has the advantages that an excellent fixing effect is achieved in a locking mode through the locking mechanism, the phenomenon that the free end of the curtain body falls off is not prone to occurring under the locking condition, and the potential safety hazard problem caused by the fact that the free end of the curtain body falls off easily is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to door bar technical field, especially curtain body locking mechanism and have its rolling slats door bar. BACKGROUND

[0002] In order to prevent infant, pet etc. from walking out of the room and cause the accident such as getting lost, injury, people often set telescopic door bar at the door, stairway or corridor etc. in the room.

[0003] For example, the adjustable telescopic protective door bar disclosed in Chinese patent application No. CN202320165782.9, the door bar mainly includes upper and lower supports, a rolling slats assembly, a winding shaft and other components, the winding shaft is pivotally installed between the upper and lower supports, the rolling slats are installed on the winding shaft and can be pulled out for use, and when not in use, the winding shaft can be driven to rotate and the rolling slats can be recovered through the elastic torsional force of the spring. The free end of the rolling slats (i.e. the end of the rolling slats away from the winding shaft) is provided with two hooks, and the two hooks are vertically spaced. After the telescopic door bar is installed, two buckles need to be installed at another installation position, and the heights of the two buckles need to be consistent with those of the two hooks. In this way, after the rolling slats are pulled out, the rolling slats can be fixed through the hooking cooperation of the two buckles and the two hooks. When the rolling slats need to be recovered, the cooperation between the buckles and the hooks can be released.

[0004] The hooking cooperation between the hooks and the buckles is simple, and the hooking cooperation between the two can be easily released, resulting in the free end of the rolling slats falling off, the rolling slats failing to form a door bar effect on infants, and the rolling slats possibly automatically recovering after the free end falls off. The swinging action of the rolling slats during the recovery process may even cause harm to the user and the infant, and there is a great safety hazard problem. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a curtain body locking mechanism and a rolling slats door bar with the same, aiming to improve the fixing structure of the free end of the rolling slats after the rolling slats are unfolded, and avoid the safety hazard problem caused by the easy falling off of the free end of the rolling slats.

[0006] To achieve the above-mentioned purpose, the utility model provides a curtain body locking mechanism, which comprises:

[0007] A first connecting piece;

[0008] A first connecting seat, which is provided with a first clamping position for partially inserting the first connecting piece;

[0009] A locking mechanism, which is arranged on the first connecting seat and used for locking the first connecting piece and the first connecting seat after the first connecting piece partially inserts into the first clamping position.

[0010] Preferably, the first connecting member is provided with a downwardly extending insertion portion which is downwardly insertable into the first clamping portion.

[0011] Preferably, the locking mechanism comprises a locking tongue movably arranged in the first connecting seat, the first connecting member is provided with a locking groove corresponding to the position of the locking tongue, the locking tongue is movable relative to the first connecting seat between a position of extending into the locking groove and a position of moving away from the locking groove, thereby realizing locking and unlocking of the first connecting member and the first connecting seat.

[0012] Preferably, the locking mechanism further comprises a first compression spring and a driving member, the driving member is movably arranged in the first connecting seat and is vertically reciprocable relative to the first connecting seat, the driving member is in linkage cooperation with the locking tongue, so that the driving member is vertically reciprocable while driving the locking tongue to extend into or move away from the locking groove, the first compression spring is used to apply an elastic force to the locking tongue in the direction of extending into the locking groove.

[0013] Preferably, the upper end of the driving member is exposed to the top of the first connecting seat, the lower end of the driving member is inside the first connecting seat, the locking tongue is provided with a first inclined surface, during the downward movement of the driving member, the lower end of the driving member is in contact with the first inclined surface and forces the locking tongue to move away from the locking groove.

[0014] Preferably, the top of the first connecting seat is provided with a window, the first connecting seat is movably arranged inside the first connecting seat at a position corresponding to below the window and is provided with a first moving member having a first mark and a second mark, the first moving member is movable relative to the first connecting seat between a position of aligning the first mark with the window vertically and a position of aligning the second mark with the window vertically, and is further provided with a second compression spring, the second compression spring is used to apply an elastic force to the first moving member in the direction of aligning the first mark with the window vertically.

[0015] Preferably, the first moving member is provided with a first pushing portion, the driving member is provided adjacent to a first step and a second inclined surface, during the downward movement of the driving member, the first moving member is forced to move in the direction of aligning the second mark with the window vertically by the cooperation of the second inclined surface and the first pushing portion, until the first pushing portion enters the first step, and the first pushing portion and the first step are kept in abutment by the elastic force of the second compression spring;

[0016] The first connecting seat is movably arranged inside the first connecting seat at a position corresponding to below the first moving member and is provided with a second moving member, the first connecting member is provided with a positioning groove corresponding to the position of the second moving member, the second moving member is movable relative to the first connecting seat between a position of extending the front end into the positioning groove and a position of moving away from the positioning groove, and is further provided with a third compression spring, the third compression spring is used to apply an elastic force to the second moving member in the direction of extending the front end into the positioning groove.

[0017] The second moving part is provided with a second pushing part, the driving part is sequentially provided with a second step and a third slope below the position corresponding to the second slope, and in the process of downward movement of the driving part, the second moving part is forced to move in the direction of moving away from the positioning groove through cooperation of the third slope and the second pushing part until the second pushing part enters the second step, and the second pushing part is kept in abutment with the second step through the elastic force of the third spring.

[0018] Preferably, the front end of the second moving part is conical, the positioning groove is adapted to the front end of the second moving part, and the front end of the second moving part is formed with an extension part in front of the first moving part, and when the second moving part moves in the direction of moving away from the positioning groove, the first moving part can be forced to move in the direction of aligning the second mark and the window up and down through contact of the extension part and the first moving part, so that the first pushing part moves away from the first step and the second pushing part moves away from the second step.

[0019] Preferably, the locking mechanism further comprises a button movably arranged below the driving part corresponding to the first connecting seat, the front end of the button protrudes out of the first connecting seat and is exposed outside, the button can move between the position of being opposite to the bottom of the driving part and the position of being staggered with the bottom of the driving part relative to the first connecting seat, when the button is opposite to the driving part, the downward movement of the driving part can be limited, when the button is staggered with the driving part, the limitation on the driving part can be removed, and a fifth spring is further arranged, the fifth spring is used for applying elastic force to the button in the direction of being opposite to the bottom of the driving part.

[0020] The utility model also proposes a kind of roll-up door fence, including curtain body and curtain body locking mechanism, the curtain body locking mechanism is above-mentioned curtain body locking mechanism, the first connecting piece is arranged in the free end of the curtain body, the first connecting seat is fixedly installed in the position to be installed, and the free end of the curtain body after being unfolded can be locked by the cooperation of the first connecting piece and the first connecting seat.

[0021] Preferably, the first connecting piece and the second connecting piece are respectively arranged at the top and the bottom of the free end of the curtain body, and the first connecting seat and the second connecting seat are fixedly installed at the upper and lower positions to be installed.

[0022] Preferably, the free end of the curtain body is provided with a connecting rod, and the two ends of the connecting rod are respectively fixedly connected with the first connecting piece and the second connecting piece.

[0023] The utility model discloses a curtain body locking mechanism is arranged on the curtain door post, and the curtain body locking mechanism mainly includes first connecting piece and first connecting seat, wherein, the first connecting piece is arranged on the free end of curtain body, and the first connecting seat is provided with the first clamping position that can be partially inserted into the first connecting piece and the locking mechanism that is used for locking the first connecting piece and the first connecting seat, after the curtain body is unfolded, the partial first connecting piece on the free end of curtain body is inserted into the first clamping position, and then the first connecting piece and the first connecting seat are locked through the locking mechanism, thereby realizing the locking of the free end of curtain body. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is the first connecting piece and the first connecting seat three-dimensional diagram in the unlocking state;

[0025] Fig. 2 It is the assembly drawing of drive part, first moving part, second moving part, lock tongue and first connecting seat;

[0026] Fig. 3 It is the sectional view of first connecting seat;

[0027] Fig. 4 It is the cooperation sectional view of first connecting seat and insert part;

[0028] Fig. 5 It is the first angle three-dimensional diagram of button, drive part, lock tongue, first moving part and second moving part;

[0029] Fig. 6 It is the second angle three-dimensional diagram of button, drive part, lock tongue, first moving part and second moving part;

[0030] Fig. 7 It is the three-dimensional diagram of the utility model. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0032] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such 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. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] This utility model proposes a curtain locking mechanism.

[0035] In this embodiment of the utility model, such as Figs. 1 to 7 As shown, the curtain locking mechanism includes a first connector 1 and a first connector 2. The first connector 2 is provided with a first locking position 100, which is used for partial insertion of the first connector 1. A locking mechanism is provided on the first connector 2 and is used to lock the first connector 1 and the first connector 2 after the first connector 1 is partially inserted into the first locking position 100.

[0036] Specifically, the first connector 1 is provided with a downwardly extending insertion part 11, which can be inserted into the first card slot 100 from top to bottom.

[0037] Specifically, the locking mechanism includes a locking tongue 31 movably disposed on the first connecting seat 2. The first connecting member 1 is provided with a locking groove 12 corresponding to the locking tongue 31. The locking tongue 31 can move relative to the first connecting seat 2 between extending into the locking groove 12 and moving away from it, thereby realizing the locking and unlocking of the first connecting member 1 and the first connecting seat 2.

[0038] Specifically, the locking groove 12 is provided in the insertion part 11.

[0039] Specifically, the locking tongue 31 can partially pass through the first connecting seat 2, enter the first locking position 100, and then extend into the locking groove 12.

[0040] Specifically, the locking mechanism further comprises a first top spring and a driving member 32 movably arranged in the first connecting seat 2 and vertically reciprocating relative to the first connecting seat 2, the driving member 32 is in linkage with the lock bolt 31, so that the driving member 32 can drive the lock bolt 31 to extend into or away from the lock slot 12 when the driving member 32 vertically reciprocates, and the first top spring is used to apply elastic force to the lock bolt 31 in the direction of extending into the lock slot 12. The lock bolt 31 can be driven to move away from the lock slot 12 by driving the driving member 32 to move downward, so as to realize the unlocking action.

[0041] Specifically, the upper end of the driving member 32 is exposed on the top of the first connecting seat 2, and the lower end of the driving member 32 is inside the first connecting seat 2, the lock bolt 31 is provided with a first inclined surface 311, and the lower end of the driving member 32 is in contact with the first inclined surface 311 during the downward movement of the driving member 32, so as to force the lock bolt 31 to move away from the lock slot 12. The driving member 32 can be driven to move downward by pressing the upper end of the driving member 32, so as to realize the unlocking action.

[0042] Specifically, a window 21 is formed on the top of the first connecting seat 2, and a first moving member 33 provided with a first mark 200 and a second mark 300 is movably arranged inside the first connecting seat 2 corresponding to a position below the window 21, the first moving member 33 can move relative to the first connecting seat 2 between a position where the first mark 200 is aligned with the window 21 and a position where the second mark 300 is aligned with the window 21, and a second top spring is further arranged, which is used to apply elastic force to the first moving member 33 in the direction of aligning the first mark 200 with the window 21.

[0043] Specifically, the first moving member 33 is provided with a first pushing part 331, the driving member 32 is provided with a first step 321 and a second inclined surface 322 adjacent to each other, and the first moving member 33 is forced to move in the direction of aligning the second mark 300 with the window 21 during the downward movement of the driving member 32 by the cooperation of the second inclined surface 322 and the first pushing part 331, until the first pushing part 331 enters the first step 321, and the first pushing part 331 and the first step 321 are kept in abutment by the elastic force of the second top spring.

[0044] A second moving member 34 is movably arranged inside the first connecting seat 2 corresponding to a position below the first moving member 33, the first connecting member 1 is provided with a positioning slot 13 corresponding to the position of the second moving member 34, the second moving member 34 can move relative to the first connecting seat 2 between a position where the front end extends into the positioning slot 13 and a position where the front end moves away from the positioning slot 13, and a third top spring is further arranged, which is used to apply elastic force to the second moving member 34 in the direction of extending the front end into the positioning slot 13.

[0045] The second moving part 34 is provided with a second pushing part 341, the driving part 32 is sequentially provided with a second step 323 and a third slope 324 below the position corresponding to the second slope 322, in the process of downward movement of the driving part 32, the second moving part 34 is forced to move in the direction of far away from the positioning groove 13 by the cooperation of the third slope 324 and the second pushing part 341 until the second pushing part 341 enters the second step 323, and the second pushing part 341 keeps abutting against the second step 323 by the elastic force of the third top spring.

[0046] Specifically, the elastic force of the second top spring and the elastic force of the third top spring after being added are greater than the elastic force of the first top spring, so that after the first pushing part 331 enters the first step 321 and the second pushing part 341 enters the second step 323, the abutting cooperation of the first pushing part 331 and the first step 321 and the abutting cooperation of the second pushing part 341 and the second step 323 can form the brake of the driving part 32, and the elastic force of the first top spring alone cannot force the driving part 32 to move upward, so as to realize that after the driving part 32 moves downward to make the locking tongue 31 exit the locking groove 12, the driving part 32 can keep stationary. After the first connecting part 1 moves away from the first connecting seat 2, the abutting cooperation of the first pushing part 331 and the first step 321 and the abutting cooperation of the second pushing part 341 and the second step 323 can be released by grabbing the part of the driving part 32 exposed on the top of the first connecting seat 2 and driving the driving part 32 to move upward, so as to make the locking groove 12 automatically move in the direction of extending into the locking groove 12 under the driving of the elastic force of the first top spring, make the first moving part 33 automatically move in the direction of aligning the first mark 200 with the window 21 up and down under the driving of the elastic force of the second top spring, and make the second moving part 34 automatically move in the direction of extending into the positioning groove 13 at the front end under the driving of the elastic force of the third top spring, so as to realize the automatic reset of the locking mechanism.

[0047] Of course, the automatic reset effect of the locking mechanism can also refer to the following embodiment, in which the front end of the second moving part 34 is conical, the positioning groove 13 is adapted to the front end of the second moving part 34, and the front end of the second moving part 34 forms an extension part 342, the extension part 342 is in front of the first moving part 33, and the first moving part 33 can be forced to move in the direction of aligning the second mark 300 with the window 21 up and down by the contact of the extension part 342 and the first moving part 33 when the second moving part 34 moves in the direction of far away from the positioning groove 13, so that the first pushing part 331 moves away from the first step 321 and the second pushing part 341 moves away from the second step 323.

[0048] After the first pushing part 331 moves away from the first step 321 and the second pushing part 341 moves away from the second step 323, the elastic force of the first top spring can drive the lock tongue 31 to move towards the direction of extending into the lock slot 12, thereby realizing the automatic reset of the lock tongue 31 and the driving part 32 by the local contact of the first inclined surface 311 with the driving part 32 and the upward movement of the driving part 32.

[0049] Specifically, in order to ensure that the driving part 32 can be automatically reset smoothly, in an embodiment, the bottom of the driving part 32 is further provided with a fourth top spring, and the elastic force of the fourth top spring drives the driving part 32 to move upward.

[0050] Specifically, the locking mechanism further comprises a button 35 movably arranged below the first connecting seat 2 corresponding to the driving part 32, the front end of the button 35 extends out of the first connecting seat 2 and is exposed outside, the button 35 can move between the position where the button 35 is locally opposite to the bottom of the driving part 32 and the position where the button 35 is locally staggered with the bottom of the driving part 32 relative to the first connecting seat 2, when the button 35 is locally opposite to the driving part 32, the driving part 32 can be limited to move downward, when the button 35 is locally staggered with the driving part 32, the limitation on the driving part 32 can be removed, and a fifth top spring is further arranged, the fifth top spring is used to apply elastic force to the button 35 to move in the direction of being locally opposite to the bottom of the driving part 32. When operating, first press the button 35 to keep the button 35 staggered with the driving part 32, and then press the driving part 32 to make the driving part 32 move downward, and the unlocking action can be completed.

[0051] The utility model discloses still propose a kind of roller shutter door fence, including curtain body 4 and curtain body locking mechanism, the first connecting piece 1 is located at the free end of the curtain body 4, the first connecting seat 2 is fixedly installed in the position to be installed, and the free end of the curtain body 4 after unfolding can be locked by the cooperation of the first connecting piece 1 and the first connecting seat 2.The specific structure of curtain body locking mechanism please refer to the above embodiment, since the above all technical solutions of curtain body locking mechanism are used in the utility model of roller shutter door fence, at least have all beneficial effects brought by the technical scheme of the above curtain body locking mechanism, and here is not repeated.

[0052] Specifically, it further comprises a second connecting piece 5 and a second connecting seat 6, the first connecting piece 1 and the second connecting piece 5 are respectively arranged at the top and the bottom of the free end of the curtain body 4, the first connecting seat 2 and the second connecting seat 6 are fixedly installed at the position to be installed with an interval, the second connecting seat 6 is provided with a second clamping position, and the first connecting piece 1 partially extends into the first clamping position 100, and the second connecting piece 5 partially extends into the second clamping position.

[0053] Specifically, the curtain body 4 free end is provided with a connecting rod 7, both ends of the connecting rod 7 are fixedly connected with the first connecting piece 1 and the second connecting piece 5 respectively.

[0054] Specifically, the curtain body 4 free end is provided with a perforation 41, and the connecting rod 7 is partially located in the perforation 41, so that the user can grasp it to facilitate the unfolding of the curtain body 4 and realize the connection and cooperation of the first connecting piece 1 and the first connecting seat 2, and the cooperation of the second connecting piece 5 and the second connecting seat 6.

[0055] It should be noted that the roll-up door bar can refer to the prior art, such as the adjustable telescopic protective door bar disclosed in Chinese patent application No. CN202320165782.9, and the specific structure and principle thereof will not be described here.

[0056] The utility model discloses a curtain body locking mechanism is arranged in the roll-up door bar, and the curtain body locking mechanism mainly includes a first connecting piece and a first connecting seat, wherein the first connecting piece is arranged on the free end of the curtain body, a first clamping position for partially inserting the first connecting piece and a locking mechanism for locking the first connecting piece and the first connecting seat are arranged on the first connecting seat, after the curtain body is unfolded, the first connecting piece on the free end of the curtain body is partially inserted into the first clamping position, and then the first connecting piece and the first connecting seat are locked through the locking mechanism, so that the locking of the free end of the curtain body is realized. Compared with the traditional hook cooperation, the locking mechanism of the utility model has excellent fixing effect, and the free end of the curtain body is not easy to fall off in the locked state, and the safety hidden trouble problem caused by the easy falling off of the free end of the curtain body is effectively avoided.

[0057] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the attached drawings, or direct / indirect application in other related technical fields under the utility model concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A curtain locking mechanism, characterized in that, include: First connector (1); The first connecting seat (2) is provided with a first locking position (100), which is used for partial insertion of the first connecting member (1); A locking mechanism is provided on the first connecting seat (2) for locking the first connecting member (1) and the first connecting seat (2) after the first connecting member (1) is partially inserted into the first locking position (100).

2. The curtain locking mechanism as described in claim 1, characterized in that: The first connector (1) is provided with a downwardly extending insertion part (11), which can be inserted into the first slot (100) from top to bottom.

3. The curtain locking mechanism as described in claim 1, characterized in that: The locking mechanism includes a latch (31) movably disposed on the first connecting seat (2). The first connecting member (1) is provided with a lock groove (12) corresponding to the position of the latch (31). The latch (31) can move relative to the first connecting seat (2) between extending into the lock groove (12) and moving away from it, thereby realizing the locking and unlocking of the first connecting member (1) and the first connecting seat (2).

4. The curtain locking mechanism as described in claim 3, characterized in that: The locking mechanism further includes a first top spring and a drive member (32). The drive member (32) is movably disposed on the first connecting seat (2) and can perform vertical reciprocating motion relative to the first connecting seat (2). The drive member (32) is linked with the locking tongue (31) so that while the drive member (32) performs vertical reciprocating motion, it can drive the locking tongue (31) to extend into or away from the locking groove (12). The first top spring is used to apply a spring force to the locking tongue (31) in the direction of extending into the locking groove (12).

5. The curtain locking mechanism as described in claim 4, characterized in that: The upper end of the drive member (32) is exposed on the top of the first connecting seat (2), and the lower end of the drive member (32) is inside the first connecting seat (2). The latch (31) is provided with a first inclined surface (311). During the downward movement of the drive member (32), the lower end of the drive member (32) partially contacts the first inclined surface (311) and forces the latch (31) to move away from the lock groove (12).

6. The curtain locking mechanism as described in claim 3, characterized in that: The first connecting seat (2) has a window (21) at its top. Inside the first connecting seat (2), corresponding to the position below the window (21), there is a first moving member (33) with a first mark (200) and a second mark (300). The first moving member (33) can move relative to the first connecting seat (2) between the position that aligns the first mark (200) vertically with the window (21) and the position that aligns the second mark (300) vertically with the window (21). A second top spring is also provided. The second top spring is used to apply a spring force to the first moving member (33) in the direction that aligns the first mark (200) vertically with the window (21).

7. The curtain locking mechanism as described in claim 6, characterized in that: The first moving member (33) is provided with a first pushing part (331), and the driving member (32) is provided with a first step (321) and a second inclined surface (322) adjacent to each other. During the downward movement of the driving member (32), the cooperation between the second inclined surface (322) and the first pushing part (331) forces the first moving member (33) to move in the direction where the second mark (300) and the window (21) are aligned vertically, until the first pushing part (331) enters the first step (321), and the elastic force applied by the second top spring keeps the first pushing part (331) and the first step (321) in contact. The first connecting seat (2) has a second moving member (34) movably provided inside, corresponding to the position below the first moving member (33). The first connecting member (1) has a positioning groove (13) corresponding to the position of the second moving member (34). The second moving member (34) can move relative to the first connecting seat (2) between the front end extending into the positioning groove (13) and the position away from it. A third top spring is also provided, which is used to apply a spring force to the second moving member (34) in the direction of moving towards the front end extending into the positioning groove (13). The second moving member (34) is provided with a second push part (341). The driving member (32) is provided with a second step (323) and a third inclined surface (324) in sequence below the second inclined surface (322). During the downward movement of the driving member (32), the cooperation between the third inclined surface (324) and the second push part (341) forces the second moving member (34) to move towards the front end away from the positioning groove (13) until the second push part (341) enters the second step (323). The elastic force applied by the third top spring keeps the second push part (341) and the second step (323) in abutment.

8. The curtain locking mechanism as described in claim 7, characterized in that: The front end of the second moving member (34) is conical. The positioning groove (13) is adapted to the front end of the second moving member (34). The front end of the second moving member (34) has an extension (342). The extension (342) is located in front of the first moving member (33). When the second moving member (34) moves away from the positioning groove (13), it can contact the first moving member (33) through the extension (342) and force the first moving member (33) to move in the direction where the second mark (300) and the window (21) are aligned vertically, so that the first push part (331) moves away from the first step (321) and the second push part (341) moves away from the second step (323).

9. The curtain locking mechanism as described in claim 4, characterized in that: The locking mechanism also includes a button (35) movably disposed on the first connecting seat (2) below the driving member (32). The front end of the button (35) extends out of the first connecting seat (2) and is exposed. The button (35) can move relative to the first connecting seat (2) between positions that are partially opposite to and offset from the bottom of the driving member (32). When the button (35) is partially opposite to the driving member (32), it can restrict the driving member (32) from moving downward. When the button (35) is offset from the driving member (32), it can release the restriction on the driving member (32). A fifth top spring is also provided, which is used to apply a spring force to the button (35) in a direction that is partially opposite to the bottom of the driving member (32).

10. A roller shutter door frame, characterized in that: Includes a curtain body (4) and a curtain locking mechanism as described in any one of claims 1 to 9, wherein the first connecting member (1) is disposed at the free end of the curtain body (4), and the first connecting seat (2) is fixedly installed at the installation position, and the free end of the unfolded curtain body (4) can be locked by the cooperation of the first connecting member (1) and the first connecting seat (2).

11. The roller shutter door frame as described in claim 10, characterized in that: It also includes a second connector (5) and a second connector (6). The first connector (1) and the second connector (5) are respectively located at the top and bottom of the free end of the curtain (4). The first connector (2) and the second connector (6) are fixedly installed at the installation position with a vertical gap. The second connector (6) is provided with a second locking position. While the first connector (1) partially extends into the first locking position (100), the second connector (5) partially extends into the second locking position.

12. The roller shutter door frame as described in claim 10, characterized in that: The curtain (4) has a connecting rod (7) at its free end, and the two ends of the connecting rod (7) are fixedly connected to the first connecting member (1) and the second connecting member (5) respectively.

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