Anti-loosening connecting structure between door leaf and door frame of floor spring door

Abstract

The utility model relates to the technical field of spring door connecting parts, in particular to an anti-loosening connecting structure between door leaves and door frames of a spring door, which comprises a door frame transverse material and a door leaf transverse material, a rectangular frame is fixedly mounted on the surface of the door leaf transverse material through two connecting columns, and a rectangular opening is formed in the surface of the rectangular frame. A first threaded hole is formed in the upper surface of the rectangular frame, and a threaded fastener is installed in the first threaded hole in a threaded mode. Through holes are symmetrically and vertically formed in the upper surface of the rectangular frame, hollow rods are vertically installed in the through holes through telescopic parts, and suction cups are fixedly installed at the opening ends of the bottoms of the hollow rods. Through cooperation of the hollow rods and the suction cups, after the door frame transverse material and the door leaf transverse material are connected through the threaded fastener, the multiple suction cups tightly abut against the surface of the threaded fastener, so that the threaded fastener is adsorbed, rotation of the threaded fastener is limited, and the connecting position of the door leaf transverse material and the door frame transverse material is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of floor spring door connection components, in particular to an anti-loosening connection structure between a door leaf and a door frame of a floor spring door. Background Art

[0002] The floor-spring door is a type of spring door that uses an underground door axis spring. The door leaf can be opened freely inside and outside. When not touched, the door leaf is in a closed position. The door panel material can be glass, metal, wood, etc.

[0003] In existing floor-spring doors, the door frame crossbeam and the door leaf crossbeam are mostly fixedly connected by threaded fasteners. After long-term use, the threaded fasteners may rotate, thereby causing the connection between the door frame crossbeam and the door leaf crossbeam to become loose. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: the door frame cross beam and the door leaf cross beam in the floor-spring door are mostly fixedly connected by threaded fasteners, and the threaded fasteners may rotate after long-term use, thereby causing the connection between the door frame cross beam and the door leaf cross beam to loosen, and an anti-loosening connection structure between the door leaf and the door frame of the floor-spring door is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A loose-proof connection structure between a spring-loaded door leaf and a door frame, comprising a door frame cross member and a door leaf cross member, a rectangular frame is fixedly mounted on the surface of the door leaf cross member through two connecting columns, a rectangular opening is provided on the surface of the rectangular frame, a first threaded hole is provided on the upper surface of the rectangular frame, a threaded fastener is threadedly mounted in the first threaded hole, and a second threaded hole for threaded mounting of the threaded fastener is provided on the lower surface of the door frame cross member;

[0007] The upper surface of the rectangular frame is symmetrically and vertically provided with through openings, in which a hollow rod with a closed top end is vertically installed through a telescopic component, a suction cup is fixedly installed at the open end of the bottom of the hollow rod, and a desorption component is provided at the top of the hollow rod, which is used to release the suction cup from adsorption of the threaded fastener.

[0008] Preferably, the telescopic component includes a mounting ring slidably mounted on a hollow rod and a telescopic spring mounted on the hollow rod, a plurality of support rods are fixedly mounted on the surface of the mounting ring, one end of the support rod is fixedly connected to the inner wall of the through opening, a circular plate is fixedly mounted on the hollow rod, and both ends of the telescopic spring are respectively fixedly connected to the circular plate and the mounting ring.

[0009] Preferably, the desorption assembly includes an arc-shaped opening on the surface of a hollow rod, a sealing plate and a rotating shaft configured as a sliding seal in the hollow rod, a rotating opening is opened at the top end of the hollow rod, the rotating shaft seal is rotatably installed in the rotating opening, and one end located in the hollow rod is fixedly connected to the sealing plate through a connecting rod, the sealing plate is used to seal the arc-shaped opening, the rotating shaft is connected to the hollow rod through an elastic component, and the rotation of the rotating shaft is controlled by a friction component.

[0010] Preferably, the elastic component includes a mounting plate fixedly mounted on the top end of the rotating shaft and a torsion spring sleeved on the rotating shaft, and two ends of the torsion spring are fixedly connected to the mounting plate and the hollow rod respectively.

[0011] Preferably, the friction component includes a friction strip, a friction ring is bonded to the side wall of the mounting plate, the diameter of the friction ring is smaller than the caliber of the through opening, and sliding openings are horizontally opened on the left and right side walls of the rectangular frame, and the friction strip is horizontally slidably arranged in the sliding openings.

[0012] Preferably, a spherical groove is provided at the top of the mounting plate, and a rolling ball is rotatably embedded in the spherical groove.

[0013] Preferably, first grooves are symmetrically provided on the left and right side walls of the middle portion of the door frame cross member and the door leaf cross member, and a heat insulation strip is provided between two of the first grooves located on the same horizontal line.

[0014] Preferably, second grooves are symmetrically provided at the top of the door frame cross member and the bottom of the door leaf cross member, and buckle strips are clamped in the second grooves.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] Through the cooperation between the hollow rod, the suction cup and the desorption component, when the door frame cross member and the door leaf cross member are connected by the threaded fasteners, multiple suction cups will tightly press against the surface of the threaded fasteners, thereby adsorbing the threaded fasteners, preventing the threaded fasteners from rotating, preventing the connection between the door leaf cross member and the door frame cross member from loosening, and improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front structural schematic diagram of an anti-loosening connection structure between a door leaf and a door frame of a spring-loaded door proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the use and installation structure of an anti-loosening connection structure between a spring-loaded door leaf and a door frame proposed by the utility model;

[0019] Figure 3 It is a schematic diagram of a partial front three-dimensional structure of a rectangular frame in an anti-loosening connection structure between a door leaf and a door frame of a spring-loaded door proposed by the utility model;

[0020] Figure 4 It is a schematic diagram of a three-dimensional structure of a part of a rectangular frame in an anti-loosening connection structure between a door leaf and a door frame of a spring-loaded door proposed by the utility model;

[0021] Figure 5 It is a schematic diagram of a partial three-dimensional structure of a hollow rod in an anti-loosening connection structure between a door leaf and a door frame of a spring-loaded door proposed by the utility model;

[0022] Figure 6 for Figure 1 A magnified view of the structure at center;

[0023] Figure 7 for Figure 2 A magnified view of the structure at B in the middle;

[0024] Figure 8 for Figure 2 A magnified view of the structure at C in the middle;

[0025] Fig. 9 for Figure 3 Enlarged view of the structure at point D in the middle.

[0026] In the figure: 1 door frame cross material, 2 door leaf cross material, 3 rectangular frame, 4 rectangular opening, 5 threaded fasteners, 6 buckle strips, 7 hollow rods, 8 suction cups, 9 mounting rings, 10 telescopic springs, 11 support rods, 12 round plates, 13 arc-shaped openings, 14 sealing plates, 15 rotating shafts, 16 mounting plates, 17 torsion springs, 18 friction strips, 19 friction rings, 20 rolling balls, 21 first grooves, 22 insulation strips, and 23 second grooves. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0029] Reference Figure 1-Figure 9, an anti-loosening connection structure between a door leaf and a door frame of a spring-loaded door, comprising a door frame cross material 1 and a door leaf cross material 2, a rectangular frame 3 is fixedly installed on the surface of the door leaf cross material 2 through two connecting columns, a rectangular opening 4 is opened on the surface of the rectangular frame 3, a first threaded hole is opened on the upper surface of the rectangular frame 3, a threaded fastener 5 is threadedly installed in the first threaded hole, a second threaded hole for threaded installation of the threaded fastener 5 is opened on the lower surface of the door frame cross material 1, first grooves 21 are symmetrically opened on the left and right side walls of the middle of the door frame cross material 1 and the door leaf cross material 2, a heat insulation strip 22 is clamped between the two first grooves 21 located on the same horizontal line, second grooves 23 are symmetrically opened on the top of the door frame cross material 1 and the bottom of the door leaf cross material 2, and a buckle strip 6 is clamped in the second groove 23;

[0030] A through hole is symmetrically and vertically opened on the upper surface of the rectangular frame 3, and a hollow rod 7 with a closed top is vertically installed in the through hole through a telescopic component. The telescopic component includes a mounting ring 9 slidably sleeved on the hollow rod 7 and a telescopic spring 10 sleeved on the hollow rod 7. A plurality of support rods 11 are fixedly installed on the surface of the mounting ring 9, and one end of the support rod 11 is fixedly connected to the inner wall of the through hole. A circular plate 12 is fixedly sleeved on the hollow rod 7, and the two ends of the telescopic spring 10 are respectively fixedly connected to the circular plate 12 and the mounting ring 9. A suction cup 8 is fixedly installed at the open end of the bottom of the hollow rod 7, and a desorption component is provided at the top of the hollow rod 7. The desorption component is used to release the suction of the suction cup 8 on the threaded fastener 5;

[0031] When it is necessary to connect the door frame cross material 1 and the door leaf cross material 2, firstly, the multiple first threaded holes opened on the surfaces of the two rectangular frames 3 are respectively aligned with the positions of the multiple second threaded holes, and then the multiple threaded fasteners 5 are respectively threadedly installed in the multiple corresponding first threaded holes and second threaded holes. As the threaded fasteners 5 rotate, the distance between the rectangular frame 3 and the door frame cross material 1 will gradually shorten, and the desorption component at the top of the hollow rod 7 will abut against the door frame cross material 1, and under the force of the abutment, the hollow rod 7 and the desorption component will move toward the passage As the suction cup 8 moves in the mouth, the distance between the suction cup 8 and the end of the threaded fastener 5 will gradually shorten. When the rectangular frame 3 and the door frame cross material 1 are against each other, the suction cup 8 will be against the end of the threaded fastener 5, and the suction cup 8 will be deformed by the pressing force, and the gas in the suction cup 8 will slip out from the gap between the suction cup 8 and the contact surface of the threaded fastener 5, thereby completing the adsorption of the threaded fastener 5, avoiding the threaded fastener 5 from rotating, preventing the connection between the door leaf cross material 2 and the door frame cross material 1 from loosening, and improving the stability of the connection.

[0032] The desorption assembly includes an arc-shaped opening 13 opened on the surface of the hollow rod 7, a sealing plate 14 and a rotating shaft 15 configured in a sliding seal inside the hollow rod 7. A rotating opening is opened at the top of the hollow rod 7. The rotating shaft 15 is installed in the rotating opening in a sealing and rotating manner, and one end located inside the hollow rod 7 is fixedly connected to the sealing plate 14 through a connecting rod. The sealing plate 14 is used to block the arc-shaped opening 13.

[0033] The rotating shaft 15 is connected to the hollow rod 7 through an elastic component, and the elastic component includes a mounting plate 16 fixedly mounted on the top of the rotating shaft 15 and a torsion spring 17 sleeved on the rotating shaft 15, and the two ends of the torsion spring 17 are fixedly connected to the mounting plate 16 and the hollow rod 7 respectively;

[0034] The rotation of the rotating shaft 15 is controlled by a friction component, which includes a friction strip 18. A friction ring 19 is bonded to the side wall of the mounting plate 16. The diameter of the friction ring 19 is smaller than the diameter of the through hole. The left and right side walls of the rectangular frame 3 are horizontally provided with sliding openings, and the friction strip 18 is horizontally slidably arranged in the sliding openings.

[0035] When installing the door frame cross material 1 and the door leaf cross material 2, the upper surface of the mounting plate 16 will be against the lower surface of the door frame cross material 1, and under the force of the pressing, the hollow rod 7 will move down with the suction cup 8, and the telescopic spring 10 will shrink. When the door leaf cross material 2 is against the door frame cross material 1, the mounting plate 16 and the friction ring 19 will be completely pressed into the through opening, and the suction cup 8 will be against the end surface of the threaded fastener 5, and the friction ring 19 will be against the friction strip 18 at this time. When it is necessary to release the adsorption of the suction cup 8, it is only necessary to control the friction strip 18 to move horizontally from the outside, and the friction ring 19 against the friction strip 18 will be in the friction force Under the action of, the mounting plate 16 and the rotating shaft 15 are rotated, and the sealing plate 14 located in the hollow rod 7 will also rotate together, until the sealing plate 14 no longer covers the arc-shaped opening 13, and the gas in the outside will enter the hollow rod 7 from the arc-shaped opening 13, thereby releasing the adsorption of the suction cup 8 and the threaded fastener 5, which is convenient and quick. When the hollow rod 7 moves with the friction ring 19 until it is no longer in contact with the friction strip 18, the friction ring 19 will quickly rotate and reset with the mounting plate 16, the rotating shaft 15 and the sealing plate 14 under the elastic potential energy of the torsion spring 17, and the sealing plate 14 will cover the arc-shaped opening 13 again.

[0036] A spherical groove is provided at the top of the mounting plate 16, and a rolling ball 20 is embedded in the spherical groove for rolling. The rolling ball 20 can prevent the mounting plate 16 and the friction ring 19 from contacting the door frame cross material 1, reduce the friction between the contact surfaces of the mounting plate 16 and the friction ring 19 and the door frame cross material 1, and avoid that when the friction ring 19 is rotated by the friction strip 18, the friction force is large, thereby affecting the rotation of the friction ring 19.

[0037] In the present invention, when it is necessary to connect the door frame cross material 1 and the door leaf cross material 2, firstly, the multiple first threaded holes opened on the surfaces of the two rectangular frames 3 are respectively aligned with the positions of the multiple second threaded holes, and then the multiple threaded fasteners 5 are respectively threadedly installed in the multiple corresponding first threaded holes and the second threaded holes. As the threaded fasteners 5 rotate, the distance between the rectangular frame 3 and the door frame cross material 1 will gradually shorten, and the desorption component at the top of the hollow rod 7 will abut against the door frame cross material 1, and under the force of the abutment, the hollow rod 7 and the desorption component It will move toward the through opening, and the distance between the suction cup 8 and the end of the threaded fastener 5 will gradually shorten. When the rectangular frame 3 is against the door frame cross material 1, the suction cup 8 will be against the end of the threaded fastener 5, and the suction cup 8 will be deformed by the pressing force, and the gas in the suction cup 8 will slip out from the gap between the suction cup 8 and the contact surface of the threaded fastener 5, thereby completing the adsorption of the threaded fastener 5, avoiding the threaded fastener 5 from rotating, preventing the connection between the door leaf cross material 2 and the door frame cross material 1 from loosening, and improving the stability of the connection.

[0038] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-loosening connection structure between a spring-loaded door leaf and a door frame, comprising a door frame cross member (1) and a door leaf cross member (2), characterized in that: A rectangular frame (3) is fixedly mounted on the surface of the door leaf cross member (2) via two connecting columns, a rectangular opening (4) is provided on the surface of the rectangular frame (3), a first threaded hole is provided on the upper surface of the rectangular frame (3), a threaded fastener (5) is threadedly mounted in the first threaded hole, and a second threaded hole for threadedly mounting the threaded fastener (5) is provided on the lower surface of the door frame cross member (1); The upper surface of the rectangular frame (3) is symmetrically and vertically provided with through openings, in which a hollow rod (7) with a closed top end is vertically installed via a telescopic component, a suction cup (8) is fixedly installed at the open end of the bottom of the hollow rod (7), and a desorption component is provided at the top of the hollow rod (7), and the desorption component is used to release the suction cup (8) from adsorbing the threaded fastener (5).

2. The anti-loosening connection structure between the door leaf and the door frame of the spring-loaded door according to claim 1, characterized in that: The telescopic component comprises a mounting ring (9) slidably mounted on a hollow rod (7) and a telescopic spring (10) mounted on the hollow rod (7); a plurality of support rods (11) are fixedly mounted on the surface of the mounting ring (9); one end of the support rod (11) is fixedly connected to the inner wall of the through opening; a circular plate (12) is fixedly mounted on the hollow rod (7); and two ends of the telescopic spring (10) are respectively fixedly connected to the circular plate (12) and the mounting ring (9).

3. The anti-loosening connection structure between the door leaf and the door frame of the spring-loaded door according to claim 1, characterized in that: The desorption assembly comprises an arc-shaped opening (13) formed on the surface of a hollow rod (7), a sealing plate (14) configured in a sliding seal inside the hollow rod (7), and a rotating shaft (15); a rotating opening is formed at the top end of the hollow rod (7); the rotating shaft (15) is installed in the rotating opening in a sealing and rotating manner, and one end of the rotating shaft (15) located inside the hollow rod (7) is fixedly connected to the sealing plate (14) via a connecting rod; the sealing plate (14) is used to block the arc-shaped opening (13); the rotating shaft (15) is connected to the hollow rod (7) via an elastic component; and the rotating shaft (15) is controlled to rotate via a friction component.

4. The anti-loosening connection structure between the door leaf and the door frame of the spring-loaded door according to claim 3, characterized in that: The elastic component comprises a mounting plate (16) fixedly mounted on the top end of the rotating shaft (15) and a torsion spring (17) sleeved on the rotating shaft (15), wherein two ends of the torsion spring (17) are respectively fixedly connected to the mounting plate (16) and the hollow rod (7).

5. The anti-loosening connection structure between the door leaf and the door frame of the spring-loaded door according to claim 4, characterized in that: The friction component comprises a friction strip (18), a friction ring (19) is bonded to the side wall of the mounting plate (16), the diameter of the friction ring (19) is smaller than the diameter of the through opening, and the left and right side walls of the rectangular frame (3) are both horizontally provided with sliding openings, and the friction strip (18) is horizontally slidably arranged in the sliding openings.

6. The anti-loosening connection structure between the door leaf and the door frame of the spring-loaded door according to claim 4, characterized in that: A spherical groove is formed at the top of the mounting plate (16), and a rolling ball (20) is rotatably embedded in the spherical groove.

7. The anti-loosening connection structure between a spring-loaded door leaf and a door frame according to claim 1, characterized in that: The left and right side walls of the middle parts of the door frame cross member (1) and the door leaf cross member (2) are symmetrically provided with first grooves (21), and a heat insulation strip (22) is sandwiched between two of the first grooves (21) located on the same horizontal line.

8. The anti-loosening connection structure between a spring-loaded door leaf and a door frame according to claim 1, characterized in that: The top of the door frame cross member (1) and the bottom of the door leaf cross member (2) are both symmetrically provided with second grooves (23), and a buckle strip (6) is clamped in the second groove (23).

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