Projection lock structure of shade curtain

Abstract

The utility model belongs to the technical field of shade curtain, especially involves a shade curtain projection cloth pull-apart locking structure, in the light of the problem that the existing shade curtain cannot be steplessly adjusted, the following scheme is presented, including installation shell, the both ends of installation shell all are installed with protective shell, the lower surface of protective shell is installed with the installation bolt of screw connection with installation shell, the lateral wall of protective shell is installed with fixed lid, the inside of one protective shell is equipped with locking mechanism for locking shade curtain. The utility model discloses through manual loosening locking button, pushes the locking button reset in the process of spring's own elongation, makes the clamping groove of locking button lateral wall and ratchet wheel engagement, and then fixes ratchet wheel, at this time, the projection cloth body is limited locking, and then the user is convenient for projection, through the fixed bolt that sets up, can the fixed frame be fixed to the limiting piece, and the locking mechanism can be pressed tightly by compression spring, and then guarantee the stability of locking.

Description

Technical Field

[0001] This utility model relates to an opening and locking structure for a blind curtain, specifically an opening and locking structure for a blind curtain projection cloth, belonging to the field of blind curtain technology. Background Technology

[0002] In today's rapidly evolving automotive industry, consumer demand for cars has evolved from mere transportation tools to multifunctional mobile spaces. This trend is driving the development of automotive accessories towards both practicality and versatility. Car cargo covers, as a core accessory that balances function and aesthetics, have become standard equipment on mainstream models such as sedans, SUVs, and MPVs due to their core value of concealing items in the trunk, protecting privacy, and optimizing the visual cleanliness of the interior. Car cargo covers effectively prevent items from shifting while driving and prevent outsiders from directly observing valuables inside the vehicle. For sedans, minimalist cargo covers further enhance the interior's refinement, meeting users' detailed needs for the in-car environment.

[0003] An existing patent (publication number: CN216783397U) discloses a curtain that can realize a projection screen, which includes a curtain, a roller shutter, and a pull rod. The roller shutter and the pull rod are respectively located on opposite sides of the curtain. The roller shutter is detachably located at the rear of the car and is used to roll up the curtain. Pulling the pull rod can pull the curtain out from the roller shutter. The curtain includes a projection surface for cooperating with a projector to form an image. When the roller shutter is detached from the rear of the car, the roller shutter is detachably connected to the car compartment through a first connecting component. Alternatively, when the roller shutter is detached from the rear of the car, the pull rod is detachably connected to the car compartment through a second connecting component. It can be detachably installed at the rear of the car via a roller shutter, and the curtain can be pulled out to cover items. It can also be detachably connected to the car body via a first or second connecting component, and the curtain can be pulled out to form a projection surface. However, in actual use, the front and rear pulling structure does not have a locking mechanism, which means that the curtain can only be fully pulled open for use, and stepless adjustment of the curtain cannot be achieved. Utility Model Content

[0004] This invention provides a projection curtain opening and locking structure to solve the problem of the inability of the blind curtain to be infinitely adjustable.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a projection curtain opening and locking structure for a blind curtain, including a mounting shell, protective shells installed at both ends of the mounting shell, mounting bolts threadedly connected to the mounting shells installed on the lower surface of the protective shells, and a fixing cover installed on the side wall of the protective shells. One of the protective shells is provided with a locking mechanism for locking the blind curtain, and the mounting shell is provided with a storage mechanism for storing the blind curtain. A covering mechanism for covering objects is provided on one side of the storage mechanism.

[0006] The locking mechanism includes a fixed frame, a limiting member, a fixing bolt, a ratchet, a locking button, and a compression spring. The fixed frame is installed inside the protective housing. A limiting member is connected to one side of the fixed frame. A fixing bolt that is threadedly connected to the limiting member is installed inside the fixed frame. A ratchet is connected inside the limiting member.

[0007] As a further improvement of this utility model: a locking button is engaged on the left side of the ratchet, and a compression spring abuts against the side wall of the ratchet.

[0008] As a further embodiment of this utility model: the storage mechanism includes an inner cover, a side tube plug, a sound-reducing tube, a torsion spring, an inner tube, and a fixing base. There are two inner covers, both of which are installed at both ends inside the mounting shell. The inner sides of both inner covers are fixed with side tube plugs.

[0009] As a further embodiment of this utility model: the storage mechanism includes an inner cover, a side tube plug, a sound-reducing tube, a torsion spring, an inner tube, and a fixing base. There are two inner covers, both of which are installed at both ends inside the mounting shell. The inner sides of both inner covers are fixed with side tube plugs.

[0010] As a further improvement of this utility model: one end of the sound-lowering tube is connected to a torsion spring, and the end of the torsion spring is fixed with a fixing seat that is fixedly connected to the inner tube.

[0011] As a further embodiment of this utility model: the covering mechanism includes a projection cloth, a main curtain, a handle, a limiting block, a positioning component, and a fixing screw. The projection cloth is connected to the outer surface of the inner tube, and the main curtain is fixed to the end of the projection cloth.

[0012] As a further improvement of this utility model: the outer wall of the main curtain is fixed with a handle by screws, and limit blocks are installed on both sides of the main curtain.

[0013] As a further improvement of this utility model: a positioning component is connected to one side of the limiting block, and a fixing screw that is threadedly connected to the limiting block is installed at the lower end of the positioning component.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model allows the locking button to be manually released, and the locking button to be pushed back to its original position during the extension of the spring. This causes the slot on the side wall of the locking button to engage with the ratchet, thereby fixing the ratchet. At this time, the projection cloth is limited and locked, which facilitates the user's projection. The fixing bolts can be used to fix the fixing frame to the limiting part, and the compression spring can press the locking mechanism to ensure the stability of the locking.

[0016] 2. This utility model releases the ratchet by manually pressing the locking button. During the self-reset process of the torsion spring, the inner tube rotates, thereby rolling the projection cloth into the mounting shell. The limiting block and positioning component set on the main curtain can play a guiding and limiting role, thereby reducing the possibility of the projection cloth shifting when it is retracted. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the protective shell of this utility model;

[0019] Figure 3 This is an exploded view of the locking mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the exploded structure of this utility model;

[0021] Figure 5 This is a bottom view of the structure of this utility model;

[0022] In the diagram: 1. Mounting shell; 2. Protective shell; 3. Fixing cover; 4. Fixing bracket; 41. Limiting component; 42. Fixing bolt; 43. Ratchet; 44. Locking button; 45. Compression spring; 5. Inner cover; 51. Side tube plug; 52. Noise-reducing tube; 53. Torsion spring; 54. Inner tube; 55. Fixing base; 6. Projection fabric; 61. Main curtain; 62. Handle; 63. Limiting block; 64. Positioning component; 65. Fixing screw; 7. Mounting bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] like Figures 1 to 5 As shown, a projection curtain opening and locking structure includes a mounting shell 1, with protective shells 2 installed at both ends of the mounting shell 1. Mounting bolts 7, threadedly connected to the mounting shell 1, are installed on the lower surface of the protective shells 2, and fixing covers 3 are installed on the side walls of the protective shells 2. One of the protective shells 2 has a locking mechanism inside for locking the curtain, and the mounting shell 1 has a storage mechanism inside for storing the curtain. A covering mechanism for covering objects is located on one side of the storage mechanism.

[0026] The locking mechanism includes a fixing frame 4, a limiting member 41, a fixing bolt 42, a ratchet 43, a locking button 44, and a compression spring 45. The fixing frame 4 is installed inside a protective housing 2. The limiting member 41 is connected to one side of the fixing frame 4. The fixing bolt 42, which is threadedly connected to the limiting member 41, is installed inside the fixing frame 4. The ratchet 43 is connected inside the limiting member 41. The protective housing 2 can be fixed by the mounting bolts 7 provided on it, and the fixing cover 3 provides protection.

[0027] Furthermore, a locking button 44 is engaged on the left side of the ratchet 43, a compression spring 45 abuts against the side wall of the ratchet 43, and a spring abuts against the lower surface of the locking button 44. By manually pressing the locking button 44, the locking button 44 pushes the spring at the bottom to compress, releasing the ratchet 43. During the self-reset process of the torsion spring 53, the inner tube 54 is driven to rotate, thereby rolling the projection cloth 6 into the mounting housing 1.

[0028] Furthermore, the storage mechanism includes an inner cover 5, a side tube plug 51, a sound-dampening tube 52, a torsion spring 53, an inner tube 54, and a fixing base 55. There are two inner covers 5, each installed at both ends inside the mounting housing 1, and a side tube plug 51 is fixed to the inner side of each inner cover 5. When the projection cloth 6 moves, it causes the inner tube 54 to rotate.

[0029] Example 2

[0030] Improvements based on Example 1:

[0031] Furthermore, an inner tube 54 is connected to the end of the side tube plug 51. A sound-reducing tube 52 is installed inside the inner tube 54. One end of the sound-reducing tube 52 is connected to a torsion spring 53. The end of the torsion spring 53 is fixedly connected to a fixing seat 55, which is fixedly connected to the inner tube 54. The inner tube 54 compresses the torsion spring 53 through the fixing seat 55. The sound-reducing tube 52 can play a certain noise reduction role. When the inner tube 54 rotates, it drives the side tube plug 51 to rotate. The inner sealing cover 5 can play a limiting role.

[0032] Furthermore, the obscuring mechanism includes a projection cloth 6, a main curtain 61, a handle 62, a limiting block 63, a positioning element 64, and a fixing screw 65. The projection cloth 6 is connected to the outer surface of the inner tube 54, and the main curtain 61 is fixed to the end of the projection cloth 6. By pulling the handle 62 on the main curtain 61, the projection cloth 6 is moved and pulled out of the mounting housing 1.

[0033] Furthermore, a handle 62 is fixed to the outer wall of the main curtain 61 with screws. Limiting blocks 63 are installed on both sides of the main curtain 61. A positioning element 64 is connected to one side of the limiting block 63, and a fixing screw 65 that is threadedly connected to the limiting block 63 is installed at the lower end of the positioning element 64. The limiting blocks 63 and positioning elements 64 provided on the main curtain 61 can play a guiding and limiting role, thereby reducing the possibility of displacement when the projection fabric 6 is retracted.

[0034] Working Principle: Before using the projection curtain to open and close the locking structure, first assemble the mounting shell 1 into the appropriate position. The protective shell 2 is fixed by the mounting bolts 7 on it, and the fixing cover 3 provides protection. In use, first manually press the locking button 44, which compresses the spring at the bottom. The user then pulls the main curtain 61 using the handle 62, causing the projection cloth 6 to move and be pulled out of the mounting shell 1. The movement of the projection cloth 6 rotates the inner tube 54, causing it to compress the torsion spring 53 via the fixing seat 55. The sound-dampening tube 52 provides some noise reduction, and the rotation of the inner tube 54 also rotates the side tube plug 51, with the inner sealing cover 5 acting as a limit. Simultaneously, the side tube plug 51 at the other end drives the ratchet 43 to rotate. When the projection cloth 6 is pulled out to the appropriate position, manually release the locking button 44. During the extension of the spring itself, the locking button 44 is pushed back to its original position, causing the slot on the side wall of the locking button 44 to engage with the ratchet 43, thereby fixing the ratchet 43. At this time, the projection cloth 6 is limited and locked, making it convenient for the user to project. The fixing bolt 42 can be used to fix the fixing frame 4 to the limiting member 41, and the compression spring 45 can press the locking mechanism to ensure the stability of the locking. When it is necessary to retract the projection cloth 6, manually press the locking button 44 to release the ratchet 43. During the reset of the torsion spring 53, the inner tube 54 is rotated, thereby retracting the projection cloth 6 into the mounting shell 1. Furthermore, the limiting block 63 and positioning element 64 provided on the main curtain 61 can play a guiding and limiting role, thereby reducing the offset when the projection cloth 6 is retracted. The fixing screw 65 provided can ensure the stability of the limiting block 63 and positioning element 64.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A projection curtain opening and locking structure, comprising a mounting shell (1), characterized in that: The mounting shell (1) is equipped with protective shells (2) at both ends. The lower surface of the protective shell (2) is equipped with mounting bolts (7) that are threadedly connected to the mounting shell (1). The side wall of the protective shell (2) is equipped with a fixing cover (3). One of the protective shells (2) is provided with a locking mechanism for locking the curtain. The mounting shell (1) is provided with a storage mechanism for storing the curtain. One side of the storage mechanism is provided with a covering mechanism for covering objects. The locking mechanism includes a fixing frame (4), a limiting member (41), a fixing bolt (42), a ratchet (43), a locking button (44), and a compression spring (45). The fixing frame (4) is installed inside a protective shell (2). The limiting member (41) is connected to one side of the fixing frame (4). The fixing bolt (42) is threadedly connected to the limiting member (41) inside the fixing frame (4). The ratchet (43) is connected inside the limiting member (41).

2. The projection curtain opening and locking structure according to claim 1, characterized in that: A locking button (44) is engaged on the left side of the ratchet (43), and a compression spring (45) abuts against the side wall of the ratchet (43).

3. The projection curtain opening and locking structure according to claim 2, characterized in that: The storage mechanism includes an inner cover (5), a side tube plug (51), a sound-lowering tube (52), a torsion spring (53), an inner tube (54), and a fixing base (55). There are two inner covers (5), and both inner covers (5) are installed at both ends inside the mounting shell (1). The inner sides of both inner covers (5) are fixed with side tube plugs (51).

4. The projection curtain opening and locking structure according to claim 3, characterized in that: The end of the side tube plug (51) is connected to an inner tube (54), and a sound-lowering tube (52) is installed inside the inner tube (54).

5. The projection curtain opening and locking structure according to claim 4, characterized in that: One end of the sound-lowering tube (52) is connected to a torsion spring (53), and the end of the torsion spring (53) is fixed with a fixing seat (55) that is fixedly connected to the inner tube (54).

6. The projection curtain opening and locking structure according to claim 5, characterized in that: The covering mechanism includes a projection cloth (6), a main curtain (61), a handle (62), a limiting block (63), a positioning component (64), and a fixing screw (65). The projection cloth (6) is connected to the outer surface of the inner tube (54), and the main curtain (61) is fixed at the end of the projection cloth (6).

7. The projection curtain opening and locking structure according to claim 6, characterized in that: The outer wall of the main curtain (61) is fixed with a handle (62) by screws, and limit blocks (63) are installed on both sides of the main curtain (61).

8. The projection curtain opening and locking structure according to claim 7, characterized in that: A positioning element (64) is connected to one side of the limiting block (63), and a fixing screw (65) that is threadedly connected to the limiting block (63) is installed at the lower end of the positioning element (64).

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