Sliding device for push-pull screen door and push-pull screen door

Abstract

The present application discloses a sliding device for a push-pull screen door, comprising: a guide rail, a crossbeam and a pull rod assembly arranged between the guide rail and the crossbeam; the guide rail comprises an integrally formed first support frame, a second support frame and a limit frame; the pull rod assembly comprises a pull rod base, a pull rod top seat and a pull rod arranged between the pull rod base and the pull rod top seat; the pull rod base is used in conjunction with the guide rail, and the pull rod top seat is used in conjunction with the crossbeam; the pull rod base comprises a base bracket, a plurality of first rollers and a plurality of second rollers; the base bracket is arranged on the guide rail and is used in conjunction with the guide rail, one end of the base bracket is provided with a boss used in conjunction with a groove of the limit frame, and the top end thereof is used for clamping the pull rod; the base bracket is hollow inside, the first roller is vertically arranged in the base bracket and is in rolling contact with the guide rail, and the second roller is horizontally arranged in the boss of the base bracket and is in rolling contact with the groove in the limit frame.

Description

Technical Field

[0001] The present invention generally relates to the technical field of door tools, and more particularly to a sliding device for a sliding screen door and a sliding screen door. Background Art

[0002] In RVs or civil buildings, sliding screen doors are often used to prevent mosquitoes from entering. There are two main structures of sliding screen doors in the prior art. One is a structure with a groove on the guide rail. In this structure, the screen door slides smoothly, but the groove is easy to get dust and debris, and it is difficult to clean it, which will cause the screen door to get stuck and unable to slide; the other is a side-sliding structure with a guide rail without a groove, but the door screen rope turns too many times and has a large friction resistance, causing the screen door to slide unsmoothly, and the rope is easily broken by friction, causing the screen door to be damaged and unusable, and difficult to repair. Summary of the invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a sliding device for a sliding screen door and a sliding screen door.

[0004] A push-pull screen door sliding device comprises: a guide rail, a crossbeam and a pull rod assembly arranged between the guide rail and the crossbeam;

[0005] The guide rail includes an integrally formed first support frame, a second support frame and a limit frame; the first support frame is horizontally arranged, the second support frame is vertically arranged on the first support frame, the limit frame is horizontally connected to the upper end of the second support frame, and is provided with an inverted U-shaped groove opening toward the first support frame;

[0006] The tie rod assembly comprises: a tie rod base, a tie rod top seat and a tie rod arranged between the tie rod base and the tie rod top seat; the tie rod base is used in conjunction with the guide rail, and the tie rod top seat is used in conjunction with the crossbeam; the tie rod slides on the guide rail through the tie rod base;

[0007] The pull rod base includes a base bracket, several first rollers and several second rollers; the base bracket is arranged on the guide rail and used in conjunction with the guide rail, one end of the base bracket is provided with a boss used in conjunction with the groove of the limit frame, and the top end of the other end is used to clamp the pull rod; the base bracket is hollow inside, the first roller is vertically arranged in the base bracket and in rolling contact with the guide rail, and the second roller is horizontally arranged in the boss of the base bracket and in rolling contact with the groove in the limit frame.

[0008] According to the technical solution provided in the embodiment of the present application, two of the first roller and the second roller are provided; a first roller connected to the base bracket is horizontally provided in the first roller, and a second roller connected to the base bracket is vertically provided in the second roller.

[0009] According to the technical solution provided in the embodiment of the present application, the lower end of the pull rod top seat is used to clamp the pull rod, and a third roller connected to it is provided inside the pull rod top seat, and the third roller is connected to the pull rod top seat via a third roller shaft.

[0010] According to the technical solution provided in the embodiment of the present application, the structures of the first roller and the third roller are both set to have a diameter of the middle section smaller than the diameters of the two ends.

[0011] According to the technical solution provided in the embodiment of the present application, a strap is horizontally provided at the upper end of the limiting frame and extends outward. The strap is integrally formed with the limiting frame and is used to clamp the floor.

[0012] A sliding screen door, comprising a sliding screen door sliding device, and further comprising: a top pin, a bottom pin, a vertical frame, a sealing wool belt and a door screen; the top pin is symmetrically arranged at both ends of the crossbeam, the bottom pin is symmetrically arranged at both ends of the guide rail, the vertical frame is vertically arranged between the top pin and the bottom pin at one end, the sealing wool belt is arranged on one side of the pull rod, and the door screen is foldable and arranged between the vertical frame and the pull rod;

[0013] A plurality of penetrating cords are arranged inside the door screen, one end of the cords passes through the pull rod assembly and the guide rail in sequence and is fixed on the bottom pin or the top pin, and the pull rod slides on the guide rail to drive the cords to control the opening and closing of the door screen.

[0014] According to the technical solution provided in the embodiment of the present application, four parallel ropes are horizontally arranged in the door screen, and the two upper ropes are successively passed through the pull rod, the first roller in the pull rod base and the guide rail and then fixed on the bottom pin, and the two lower ropes are successively passed through the pull rod, the third roller in the pull rod top seat and the guide rail and then fixed on the top pin.

[0015] According to the technical solution provided in the embodiment of the present application, the bottom pins are used to fix the vertical frame and the guide rails, and the top pins are used to fix the vertical frame and the crossbeam.

[0016] According to the technical solution provided in the embodiment of the present application, the pull rod is provided with a groove for accommodating the rope, and one end of the rope is provided with an aluminum buckle for fixing.

[0017] In summary, the above technical solution of the present application can make the pull rod slide smoothly, and it is not easy to accumulate dust and debris by setting a guide rail without grooves and a pull rod base that cooperates with the guide rail, and designing the direction of the wire rope in the door screen to reduce friction, so as to increase the service life of the wire rope; when using the device, directly pull the pull rod to drive the pull rod base to slide on the guide rail and the pull rod top seat to slide on the crossbeam, so as to realize the opening and closing of the push-pull screen door; the pull rod top seat and the crossbeam are used in combination to assist the pull rod to move left and right, and the pull rod base and the guide rail are used in combination to play a major sliding role for the pull rod; during the sliding process, the first roller of the pull rod base limits the displacement of the pull rod base in the vertical direction, and the second roller limits the displacement of the pull rod base in the left and right directions, adopting a two-way double-wheel contact to reduce friction, so that even if the pull rod is tilted and twisted, it can slide smoothly on the guide rail, and there is no groove on the upper surface of the guide rail. The wire rope in the door screen can open and close the door screen through the drive of the pull rod, so the user can conveniently control the opening and closing of the door screen by pulling the pull rod.

[0018] The guide rails of this device have no grooves, will not accumulate dust and debris, and are easy to clean; it has a two-way pulley guide and no other hard friction, which greatly reduces friction and allows smooth sliding even if the pull rod is tilted or twisted; the four ropes are bent only once, which reduces friction by reducing the number of turns of the ropes, prevents the ropes from wearing out too quickly, extends the service life of the ropes, makes them less likely to break and be damaged, extends their service life, and is convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 It is a structural schematic diagram of a sliding device for a sliding screen door and a sliding screen door;

[0021] Figure 2 It is a structural schematic diagram of the pull rod top seat;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the pull rod base;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the pull rod base (side view);

[0024] Figure 5-6 is a schematic diagram of embodiment 1;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of a sliding screen door;

[0026] Figure 8 It is a structural schematic diagram of a sliding screen door;

[0027] Fig. 9 This is a schematic diagram of the second embodiment.

[0028] Numbers in the figure: 1. Guide rail; 2. Crossbeam; 3. First support frame; 4. Second support frame; 5. Limit frame; 6. Pull rod base; 7. Pull rod top seat; 8. Pull rod; 9. Base bracket; 10. First roller; 11. Second roller; 12. Third roller; 13. Strap; 14. Top pin; 15. Bottom pin; 16. Vertical frame; 17. Sealing wool tape; 18. Door screen; 19. Rope. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Embodiment 1

[0032] A sliding device for a push-pull screen door, comprising: a guide rail 1, a crossbeam 2, and a pull rod assembly arranged between the guide rail 1 and the crossbeam 2;

[0033] The guide rail 1 includes an integrally formed first support frame 3, a second support frame 4 and a limiting frame 5; the first support frame 3 is horizontally arranged, the second support frame 4 is vertically arranged on the first support frame 3, the limiting frame 5 is horizontally connected to the upper end of the second support frame 4, and is provided with an inverted U-shaped groove opening toward the first support frame 3;

[0034] The tie rod assembly comprises: a tie rod base 6, a tie rod top seat 7 and a tie rod 8 arranged between the tie rod base 6 and the tie rod top seat 7; the tie rod base 6 is used in conjunction with the guide rail 1, and the tie rod top seat 7 is used in conjunction with the crossbeam 2; the tie rod 8 slides on the guide rail 1 through the tie rod base 6;

[0035] The pull rod base 6 includes a base bracket 9, several first rollers 10 and several second rollers 11; the base bracket 9 is arranged on the guide rail 1 and used in conjunction with the guide rail 1, one end of the base bracket 9 is provided with a boss used in conjunction with the groove of the limit frame 5, and the top end of the other end is used to clamp the pull rod 8; the base bracket 9 is hollow inside, the first roller 10 is vertically arranged in the base bracket 9 and in rolling contact with the guide rail 1, and the second roller 11 is horizontally arranged in the boss of the base bracket 9 and in rolling contact with the groove in the limit frame 5.

[0036] In order to further optimize the above technical solution, the present technical solution preferably also provides the following improvements: the first roller 10 and the second roller 11 are both set to two; a first roller connected to the base bracket 9 is horizontally provided in the first roller 10, and a second roller connected to the base bracket 9 is vertically provided in the second roller 11.

[0037] In order to further optimize the above technical solution, the present technical solution preferably also provides the following improvements: the lower end of the pull rod top seat 7 is used to clamp the pull rod 8, and a third roller 12 connected thereto is provided inside the pull rod top seat 7, and the third roller 12 is connected to the pull rod top seat 7 via a third roller.

[0038] In order to further optimize the above technical solution, the present technical solution preferably also provides the following improvements: the structures of the first roller 10 and the third roller 12 are both set so that the diameter of the middle section is smaller than the diameter of the two ends.

[0039] like Figure 1 As shown, when using the device, directly pull the pull rod 8 to drive the pull rod base 6 to slide on the guide rail 1 and the pull rod top seat 7 to slide on the beam 2, so as to realize the opening and closing of the push-pull screen door; Figure 2 As shown, the pull rod top seat 7 cooperates with the third roller 12 and the cross beam 2 to assist the pull rod 8 to move left and right; Figure 3 and Figure 4 As shown, the pull rod base 6 and the guide rail 1 are used together to play a major sliding role for the pull rod 8. During the sliding process, the first roller 10 of the pull rod base 6 limits the displacement of the pull rod base 6 in the vertical direction, and the second roller 11 limits the displacement of the pull rod base 6 in the left and right directions. Bidirectional double-wheel contact is adopted to reduce friction, so that the pull rod 8 can slide smoothly on the guide rail 1 even if it is tilted and twisted; at the same time, there are no grooves on the upper surface of the guide rail 1, so dust and debris will not accumulate, it is easy to clean, and convenient to use.

[0040] Among them, Figure 5 As shown in a, Figure 4 The cross section DD in FIG. 1 is a schematic diagram of the first roller 10 sliding left and right; when the pull rod 8 slides, since the pulling force provided by the user is not fixed in direction, the pull rod 8 may be tilted forward and backward, causing the pull rod base 6 to be stuck. Therefore, two first rollers 10 are provided to make the pull rod base 6 and the guide rail 1 always in a rolling contact state, such as Figure 5 As shown in b, when the pull rod 8 slides to the right and tilts, point A in the figure is the contact point between the first roller 10 and the guide rail 1, and point B is the non-contact point; Figure 5 As shown in c, when the pull rod 8 slides to the left and tilts, point A in the figure is the contact point between the first roller 10 and the guide rail 1, and point B is the non-contact point.

[0041] Among them, Figure 6 As shown in a, Figure 4 The cross section CC in FIG. 1 is a schematic diagram of the second roller 11 sliding left and right; when the pull rod 8 slides, since the pulling force provided by the user is not fixed in direction, the pull rod 8 may be twisted and the pull rod base 6 may be stuck. Therefore, two second rollers 11 are provided to make the pull rod base 6 and the limit frame 5 of the guide rail 1 always in a rolling contact state, such as Figure 6 As shown in b, when the pull rod 8 is twisted counterclockwise, point A in the figure is the contact point between the first roller 10 and the guide rail 1, and point B is the non-contact point; Figure 6 As shown in c, when the pull rod 8 is twisted clockwise, point A in the figure is the contact point between the second roller 11 and the guide rail 1, and point B is the non-contact point.

[0042] In summary, the guide rail 1 of the device has no grooves, will not accumulate dust and debris, and is easy to clean; it has a two-way pulley guide and no other hard friction, which greatly reduces the friction force. Even if the pull rod 8 is tilted and twisted, it can slide smoothly, extending the service life and making it convenient for users to use.

[0043] In order to further optimize the above technical solution, the present technical solution preferably also provides the following improvements: a strap 13 extending outward is horizontally provided at the upper end of the limiting frame 5, and the strap 13 is integrally formed with the limiting frame 5 and is used to clamp the floor. When the sliding screen door device is used, the strap 13 can cover the gap between the guide rail and the bottom plate to prevent dust from entering.

[0044] Embodiment 2

[0045] A sliding screen door, comprising a sliding screen door sliding device, further comprising: a top pin 14, a bottom pin 15, a vertical frame 16, a sealing wool belt 17 and a door screen 18; the top pin 14 is symmetrically arranged at both ends of a crossbeam 2, the bottom pin 15 is symmetrically arranged at both ends of a guide rail 1, the vertical frame 16 is vertically arranged between the top pin 14 and the bottom pin 15 at one end, the sealing wool belt 17 is arranged on one side of a pull rod 8, and the door screen 18 is foldable and arranged between the vertical frame 16 and the pull rod 8;

[0046] The door screen 18 is provided with several penetrating cords 19 inside, one end of the cords 19 passes through the pull rod assembly and the guide rail 1 in sequence and is fixed to the bottom pin 15 or the top pin 14. The pull rod 8 slides on the guide rail 1 to drive the cords 19 to control the opening and closing of the door screen 18.

[0047] In order to further optimize the above technical solution, the present technical solution preferably also provides the following improvements: four parallel ropes 19 are horizontally arranged in the door screen 18, and the two upper ropes 19 are successively passed through the pull rod 8, the first roller 10 in the pull rod base 6 and the guide rail 1 and then fixed on the bottom pin 15, and the two lower ropes 19 are successively passed through the pull rod 8, the third roller 12 in the pull rod top seat 7 and the guide rail 1 and then fixed on the top pin 14.

[0048] In order to further optimize the above technical solution, the present technical solution preferably also provides the following improvements: the bottom pins 15 are used to fix the vertical frame 16 and the guide rail 1 , and the top pins 14 are used to fix the vertical frame 16 and the crossbeam 2 .

[0049] In order to further optimize the above technical solution, the present technical solution preferably also provides the following improvements: the pull rod 8 is provided with a groove for accommodating the wire rope 19, and one end of the wire rope 19 is provided with an aluminum buckle for fixing.

[0050] In this embodiment, a sliding screen door is provided on the basis of the first embodiment. Figure 1 and Figure 7 As shown, the cord 19 in the door screen 18 can open and close the door screen 18 through the pull rod 8, so the user can easily control the opening and closing of the door screen 18 by pulling the pull rod 8. One end of the cord 19 is fixed in the vertical frame 16, and the other ends of the two cords 19 at the upper end pass through the pull rod 8 and pass under the middle section of the first roller 10 of the pull rod base 6, and then are fixed to the bottom pin 15 through the surface of the guide rail 1; the other ends of the two cords 19 at the lower end pass through the pull rod 8 and pass above the middle section of the third roller 12 of the pull rod top seat 7, and then are fixed to the top pin 14 through the crossbeam 2.

[0051] like Figure 7 As shown, when the pull rod 8 slides left and right, it can drive the rope 19 to move through the first roller 10 and the third roller 12. Figure 8 As shown, when the door screen 18 is closed, the sealing wool tape 17 can directly seal the edge; Fig. 9 As shown, during the opening process of the door screen 18, the pull rod 8 drives the cord 19 to slowly move from the guide rail 1 and the cross beam 2 to the inside of the door screen 18, so that the door screen 18 is stretched; during the closing process of the door screen 18, the pull rod 8 drives the cord 19 to slowly move from the inside of the door screen 18 to the surface of the guide rail 1 and the cross beam 2 and lay flat on them, so that the door screen 18 is closed. The four cords 19 are bent only once, and the friction is reduced by reducing the number of turns of the cords 19, so that the cords 19 are prevented from being worn too quickly, and the service life of the cords 19 is extended, so that they are not easy to be broken or damaged.

[0052] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. A sliding device for a push-pull screen door, characterized in that: include: A guide rail (1), a crossbeam (2), and a pull rod assembly arranged between the guide rail (1) and the crossbeam (2); The guide rail (1) comprises an integrally formed first support frame (3), a second support frame (4) and a limiting frame (5); the first support frame (3) is arranged horizontally, the second support frame (4) is arranged vertically on the first support frame (3), and the limiting frame (5) is horizontally connected to the upper end of the second support frame (4) and is provided with an inverted U-shaped groove with an opening facing the first support frame (3); The tie rod assembly comprises: a tie rod base (6), a tie rod top seat (7) and a tie rod (8) arranged between the tie rod base (6) and the tie rod top seat (7); the tie rod base (6) is used in conjunction with the guide rail (1), and the tie rod top seat (7) is used in conjunction with the crossbeam (2); the tie rod (8) slides on the guide rail (1) via the tie rod base (6); The pull rod base (6) comprises a base bracket (9), a plurality of first rollers (10) and a plurality of second rollers (11); the base bracket (9) is arranged on the guide rail (1) and used in conjunction with the guide rail (1); one end of the base bracket (9) is provided with a boss used in conjunction with a groove of the limit frame (5), and the top end of the other end is used to clamp the pull rod (8); the base bracket (9) is hollow inside, the first roller (10) is vertically arranged in the base bracket (9) and is in rolling contact with the guide rail (1), and the second roller (11) is horizontally arranged in the boss of the base bracket (9) and is in rolling contact with the groove in the limit frame (5); The number of the first roller (10) and the number of the second roller (11) are both two; a first roller connected to the base bracket (9) is horizontally arranged in the first roller (10), and a second roller connected to the base bracket (9) is vertically arranged in the second roller (11); A strap plate (13) extending outward is horizontally disposed at the upper end of the limiting frame (5); the strap plate (13) is integrally formed with the limiting frame (5) and is used for clamping the floor.

2. A sliding device for a sliding screen door as claimed in claim 1, characterized in that: The lower end of the pull rod top seat (7) is used to clamp the pull rod (8), and a third roller (12) connected to it is provided inside the pull rod top seat (7), and the third roller (12) is connected to the pull rod top seat (7) via a third roller shaft.

3. A sliding device for a sliding screen door as claimed in claim 2, characterized in that: The structures of the first roller (10) and the third roller (12) are both set so that the diameter of the middle section is smaller than the diameter of the two ends.

4. A sliding screen door, comprising a sliding screen door sliding device according to any one of claims 1 to 3, characterized in that: Also includes: A top pin (14), a bottom pin (15), a vertical frame (16), a sealing tape (17) and a door screen (18); the top pin (14) is symmetrically arranged at both ends of the crossbeam (2), the bottom pin (15) is symmetrically arranged at both ends of the guide rail (1), the vertical frame (16) is vertically arranged between the top pin (14) and the bottom pin (15) at one end, the sealing tape (17) is arranged on one side of the pull rod (8), and the door screen (18) is foldable and arranged between the vertical frame (16) and the pull rod (8); The door screen (18) is provided with a plurality of penetrating cords (19), one end of each cord (19) passes through the pull rod assembly and the guide rail (1) in sequence and is then fixed to the bottom pin (15) or the top pin (14). The pull rod (8) slides on the guide rail (1) to drive the cords (19) to control the opening and closing of the door screen (18).

5. A sliding screen door as claimed in claim 4, characterized in that: Four mutually parallel cords (19) are horizontally arranged in the door screen (18), and the two upper cords (19) are fixed to the bottom pin (15) after passing through the pull rod (8), the first roller (10) in the pull rod base (6) and the guide rail (1) in sequence, while the two lower cords (19) are fixed to the top pin (14) after passing through the pull rod (8), the third roller (12) in the pull rod top seat (7) and the guide rail (1) in sequence.

6. A sliding screen door as claimed in claim 4, characterized in that: The bottom pin (15) is used to fix the vertical frame (16) and the guide rail (1), and the top pin (14) is used to fix the vertical frame (16) and the crossbeam (2).

7. A sliding screen door as claimed in claim 4, characterized in that: The pull rod (8) is provided with a groove for accommodating the wire rope (19), and one end of the wire rope (19) is provided with an aluminum buckle for fixing.

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