Screen door guide rail carriage locking mechanism

Abstract

The utility model relates to the field of screen doors, in particular to a screen door guide rail carriage locking mechanism which comprises a door frame profile and a door leaf profile, an upper guide rail is fixed to the top of the door frame profile, a bottom frame is fixed to the bottom of the door frame profile, and a lower guide rail is fixed to the top of the bottom frame. The door leaf profile is further connected with a locking assembly through a control assembly, the locking assembly is fixed to sliding frames, the two sliding frames are slidably connected with the surface of the upper guide rail and the surface of the lower guide rail respectively, a plastic strip is fixed to the surface of the lower guide rail, the bottom of the sliding frame fixed to the lower end of the door leaf profile slides on the surface of the plastic strip, and the two sliding frames are rotationally connected with pulleys. The sliding device has the advantages that the sliding device has the function of facilitating sliding and locking of the door leaf, friction between the sliding frame made of plastic and the plastic strip is smoother, the sliding frame slides smoother again through contact between the pulley and the lower guide rail, and therefore the door leaf of the screen door can be pushed and pulled conveniently and easily.

Description

Technical Field

[0001] The utility model relates to the field of screen doors, and particularly relates to a locking mechanism for a screen door guide rail sliding frame. Background Art

[0002] A screen door is a door equipped with a screen mesh, mainly used for preventing mosquitoes, ventilating, and keeping the indoor air circulating. They are usually installed on windows or doorways and are an effective solution to prevent insects from entering the room while maintaining ventilation.

[0003] After retrieval, a guide rail sliding frame locking mechanism and a sliding door leaf assembly structure with the publication number of CN219672408U. Among them, the guide rail sliding frame locking mechanism includes a guide rail and a slider frame. The slider frame is slidably installed on the guide rail. It also includes a compression spring. A support guide frame is fixedly connected to the slider frame. A pressure rod is movably inserted through a perforation at the top of the support guide frame. A pressure block for applying pressure to the guide rail is installed at the bottom end of the pressure rod. The compression spring is sleeved on the pressure rod, and one end of the compression spring abuts against the top end of the support guide frame, and the other end of the compression spring abuts against the bottom support piece. A pair of swing rods are rotatably installed at the lower end of the support guide frame, and the lower end of the swing rod is rotatably connected to the lower end of the pressure rod.

[0004] Although the above-mentioned utility model patent is beneficial to generate a greater static friction force between the pressure block and the guide rail, so that the pressure block and the guide rail can be locked together more stably, the sliding friction between its slider frame and the upper guide rail and the lower guide rail is not smooth enough and needs further improvement.

[0005] Therefore, it is necessary to invent a locking mechanism for a screen door guide rail sliding frame. Content of the Utility Model

[0006] For this reason, the utility model provides a locking mechanism for a screen door guide rail sliding frame to solve the problems raised in the above background art.

[0007] In order to achieve the above purpose, the utility model provides the following technical solution: A locking mechanism for a screen door guide rail sliding frame includes a door frame profile and a door leaf profile. An upper guide rail is fixed at the top of the door frame profile, a bottom frame is fixed at the bottom of the door frame profile, and a lower guide rail is fixed at the top of the bottom frame. Sliding frames are symmetrically fixed at the upper and lower ends of the door leaf profile. A locking component is also connected to the door leaf profile through a control component. The locking component is fixed on the sliding frame. The two sliding frames are respectively slidably connected to the surfaces of the upper guide rail and the lower guide rail. A plastic strip is fixed on the surface of the lower guide rail, and the bottom of the sliding frame fixed at the lower end of the door leaf profile slides on the surface of the plastic strip. Pulleys are rotatably connected to both sliding frames, and the pulleys roll on the surfaces of the upper guide rail and the lower guide rail.

[0008] Preferably, the control component includes a side wall seat plate fixed in the middle of the door leaf profile. A handle is rotatably connected to the side wall seat plate, and a rotating block is rotatably connected to the inner side of the side wall seat plate. The rotating block is fixedly connected to the handle.

[0009] Preferably, connecting blocks are symmetrically fixed at the edge of the rotating block, pulling rods are fixedly connected to the surfaces of the connecting blocks, and hooks are fixedly connected to the ends of the pulling rods away from the connecting blocks.

[0010] Preferably, the locking component includes two support frames respectively fixed inside two sliding frames. Linkage rods vertically penetrate through the ends of the support frames, connection holes are formed at the ends of the linkage rods, and the hooks are inserted into the connection holes.

[0011] Preferably, spring seats are fixedly connected to the inner sides of the support frames, return springs are sleeved on the surfaces of the linkage rods, the bottom ends of the return springs are fixedly connected to the surfaces of the linkage rods, and the top ends of the return springs abut against the top of the inner wall of the support frames.

[0012] Preferably, the bottom ends of the linkage rods vertically penetrate through the spring seats, and U-shaped bottom plates are fixedly connected to the bottom ends of the linkage rods. Pressure blocks are fixedly connected inside the U-shaped bottom plates. The two pressure blocks respectively abut against the surfaces of the upper guide rail and the lower guide rail. Swing rods are rotatably connected to the side ends of the U-shaped bottom plates, and the ends of the swing rods away from the U-shaped bottom plates are rotatably connected to the side ends of the support frames.

[0013] The beneficial effects of the present utility model are as follows: Through the combined use of the door frame profile, door leaf profile, upper guide rail, bottom frame, lower guide rail, sliding frame, control component, locking component, plastic strip and pulley, while having the convenient function of pushing, pulling and locking the door leaf, it can also make the friction between the plastic sliding frame and the plastic strip smoother, and through the contact of the pulley with the lower guide rail, the sliding of the sliding frame is made smoother again, thus facilitating the easy pushing and pulling of the screen door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structure diagram provided by the present utility model;

[0015] Figure 2 is Figure 1 the enlarged structure diagram at A in

[0016] Figure 3 is a three-dimensional structure diagram of the control component provided by the present utility model;

[0017] Figure 4 is a three-dimensional structure diagram of the control component provided by the present utility model;

[0018] Figure 5 is Figure 4 the enlarged structure diagram at B in

[0019] Figure 6 A three-dimensional structure diagram of the locking component and the lower guide rail provided by the present utility model;

[0020] Figure 7 A three-dimensional structure diagram of the locking component and the lower guide rail provided by the present utility model;

[0021] Figure 8 A three-dimensional structure diagram of the locking component provided by the present utility model;

[0022] Figure 9 A three-dimensional structure diagram of the locking component provided by the present utility model.

[0023] In the figure: 1, door frame profile; 2, upper guide rail; 3, bottom frame; 4, door leaf profile; 5, lower guide rail; 6, plastic strip; 7, pulley; 8, side wall seat plate; 9, handle; 10, rotating block; 11, connecting block; 12, pulling rod; 13, hook; 14, sliding frame; 15, support frame; 16, linkage rod; 17, connecting hole; 18, spring seat; 19, return spring; 20, U-shaped bottom plate; 21, pressing block; 22, swing rod. Specific embodiments

[0024] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not used to limit the present utility model.

[0025] Please refer to the attached Figures 1-9 , A sliding frame locking mechanism for a screen door guide rail provided by the present utility model includes a door frame profile 1 and a door leaf profile 4. An upper guide rail 2 is fixed to the top of the door frame profile 1, a bottom frame 3 is fixed to the bottom of the door frame profile 1, a lower guide rail 5 is fixed to the top of the bottom frame 3, and sliding frames 14 are symmetrically fixed to the upper and lower ends of the door leaf profile 4. It should be noted that the sliding frame 14 is made of plastic. A locking component is also connected to the door leaf profile 4 through a control component, and the locking component is fixed on the sliding frame 14. The two sliding frames 14 are respectively slidably connected to the surfaces of the upper guide rail 2 and the lower guide rail 5. A plastic strip 6 is fixed to the surface of the lower guide rail 5, and the bottom of the sliding frame 14 fixed to the lower end of the door leaf profile 4 slides on the surface of the plastic strip 6. That is, under the action of the plastic strip 6, the friction between the plastic sliding frame 14 and the plastic strip 6 is smoother. Pulleys 7 are rotatably connected to both sliding frames 14, and the pulleys 7 roll on the surfaces of the upper guide rail 2 and the lower guide rail 5. That is, by contacting the lower guide rail 5 through the pulleys 7, the sliding of the sliding frame 14 is made smoother again, so that the door leaf profile 4 slides smoothly, that is, it is convenient to push and pull the screen door leaf easily;

[0026] The control component includes a side wall seat plate 8 which is fixed in the middle of the door leaf profile 4. A handle 9 is rotatably connected to the side wall seat plate 8. A rotating block 10 is rotatably connected to the inner side of the side wall seat plate 8. The rotating block 10 is fixedly connected to the handle 9. That is, the user can twist the rotating block 10 through the handle 9. Symmetrically fixed to the edge of the rotating block 10 are connecting blocks 11. Pulling rods 12 are fixedly connected to the surfaces of the connecting blocks 11. Hooks 13 are fixedly connected to the ends of the pulling rods 12 away from the connecting blocks 11. That is, when the rotating block 10 is twisted, the two pulling rods 12 can be driven to move towards each other through the connecting blocks 11 to achieve the purpose of retracting and pulling.

[0027] The locking component includes two support frames 15 which are respectively fixed inside the two sliding frames 14. Linkage rods 16 are vertically penetrated through the ends of the support frames 15. Connecting holes 17 are formed at the ends of the linkage rods 16. The hooks 13 are inserted into the connecting holes 17. That is, when the pulling rods 12 are retracted and pulled, the linkage rods 16 can be retracted and pulled through the hooks 13. Spring seats 18 are fixedly connected to the inner sides of the support frames 15. Return springs 19 are sleeved on the surfaces of the linkage rods 16. The bottom ends of the return springs 19 are fixedly connected to the surfaces of the linkage rods 16. The top ends of the return springs 19 abut against the tops of the inner walls of the support frames 15. Therefore, when the linkage rods 16 are retracted and pulled, the return springs 19 can be compressed to generate elastic forces. The bottom ends of the linkage rods 16 vertically penetrate through the spring seats 18, and U-shaped bottom plates 20 are fixedly connected to the bottom ends of the linkage rods 16. Pressure blocks 21 are fixedly connected inside the U-shaped bottom plates 20. The two pressure blocks 21 respectively abut against the surfaces of the upper guide rail 2 and the lower guide rail 5. Swing rods 22 are rotatably connected to the side ends of the U-shaped bottom plates 20. The ends of the swing rods 22 away from the U-shaped bottom plates 20 are rotatably connected to the side ends of the support frames 15. That is, when the linkage rods 16 are retracted and pulled, the U-shaped bottom plates 20 and the pressure blocks 21 can be retracted and pulled, so that the pressure blocks 21 no longer abut against the surfaces of the upper guide rail 2 and the lower guide rail 5, and thus can be unlocked, so that the sliding frame 14 can move, that is, the door leaf profile 4 can move. Similarly, when the user twists the handle 9 in the reverse direction, that is, when no pulling force is applied to the pulling rods 12, under the elastic force of the return spring 19, the corresponding pressure blocks 21 can continue to be tightly pressed against the surfaces of the upper guide rail 2 and the lower guide rail 5 and fixed through frictional resistance, and the locking function of the sliding frame 14 is re-implemented, thus having the convenient function of locking and unlocking the door leaf for pushing and pulling.

[0028] The usage process of the present utility model is as follows: First, under normal conditions, under the elastic force of the return spring 19, the corresponding pressing block 21 can be tightly pressed against the surfaces of the upper guide rail 2 and the lower guide rail 5, and fixed through frictional resistance, realizing the locking function of the carriage 14. When the user turns the rotating block 10 by the handle 9, that is, when pulling the two pulling rods 12, the linkage rod 16 can be pulled. When the linkage rod 16 is pulled, it can drive the U-shaped bottom plate 20 and the pressing block 21 to be pulled, so that the pressing block 21 no longer abuts against the surfaces of the upper guide rail 2 and the lower guide rail 5, and then it can be unlocked, so that the carriage 14 can move, that is, the door leaf profile 4 can move. Similarly, when the user turns the handle 9 in the reverse direction, that is, no longer applies a pulling force to the pulling rod 12, under the elastic force of the return spring 19, the corresponding pressing block 21 can continue to be tightly pressed against the surfaces of the upper guide rail 2 and the lower guide rail 5, and fixed through frictional resistance, re-realizing the locking function of the carriage 14, thus having a convenient door leaf push-pull locking function;

[0029] Secondly, under the action of the plastic strip 6, the friction between the plastic carriage 14 and the plastic strip 6 is smoother, and then it contacts the lower guide rail 5 through the pulley 7, making the carriage 14 slide more smoothly again, so that the door leaf profile 4 slides smoothly, that is, it is convenient to easily push and pull the screen door leaf.

[0030] The above is only the preferred embodiment of the present utility model. Any person skilled in the art can modify the present utility model by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present utility model falls within the scope of protection required by the present utility model.

Claims

1. A screen door guide rail slide locking mechanism, comprising a door frame profile (1) and a door leaf profile (4), wherein an upper guide rail (2) is fixed to the top of the door frame profile (1), a bottom frame (3) is fixed to the bottom of the door frame profile (1), and a lower guide rail (5) is fixed to the top of the bottom frame (3), characterized in that: The upper and lower ends of the door leaf profile (4) are symmetrically fixed with slides (14); the door leaf profile (4) is also connected to a locking component via a control component; the locking component is fixed to the slide (14); the two slides (14) are respectively slidably connected to the surface of the upper guide rail (2) and the surface of the lower guide rail (5); a plastic strip (6) is fixed to the surface of the lower guide rail (5); the bottom of the slide (14) fixed to the lower end of the door leaf profile (4) slides on the surface of the plastic strip (6); the two slides (14) are both connected to pulleys (7); the pulleys (7) roll on the surface of the upper guide rail (2) and the surface of the lower guide rail (5).

2. A screen door guide rail slide locking mechanism according to claim 1, characterized in that: The control assembly comprises a side wall seat plate (8), the side wall seat plate (8) is fixed to the middle part of the door leaf profile (4), a handle (9) is rotatably connected to the side wall seat plate (8), a rotating block (10) is rotatably connected to the inner side of the side wall seat plate (8), and the rotating block (10) is fixedly connected to the handle (9).

3. A screen door guide rail slide locking mechanism according to claim 2, characterized in that: A connecting block (11) is symmetrically fixed at the edge of the rotating block (10), a pulling rod (12) is fixed on the surface of the connecting block (11), and a pulling hook (13) is fixed at one end of the pulling rod (12) away from the connecting block (11).

4. A screen door guide rail slide locking mechanism according to claim 3, characterized in that: The locking assembly comprises two support frames (15), the two support frames (15) are respectively fixed on the inner sides of two slide frames (14), the ends of the support frames (15) are vertically penetrated by linkage rods (16), the ends of the linkage rods (16) are provided with connection holes (17), and the draw hooks (13) are inserted into the connection holes (17).

5. A screen door guide rail slide locking mechanism according to claim 4, characterized in that: A spring seat (18) is fixed on the inner side of the support frame (15), and a return spring (19) is sleeved on the surface of the linkage rod (16). The bottom end of the return spring (19) is fixedly connected to the surface of the linkage rod (16), and the top end of the return spring (19) is in contact with the top of the inner wall of the support frame (15).

6. A screen door guide rail slide locking mechanism according to claim 5, characterized in that: The bottom end of the linkage rod (16) vertically penetrates the spring seat (18), and a U-shaped bottom plate (20) is fixed to the bottom end of the linkage rod (16), and a pressure block (21) is fixed inside the U-shaped bottom plate (20), and the two pressure blocks (21) are respectively abutted against the surface of the upper guide rail (2) and the surface of the lower guide rail (5), and the side ends of the U-shaped bottom plate (20) are rotatably connected to a swing rod (22), and the end of the swing rod (22) away from the U-shaped bottom plate (20) is rotatably connected to the side end of the support frame (15).

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