Anti-swing lower wheel of linkage door

Abstract

The utility model discloses an anti-swing lower wheel of a linkage door. The anti-swing lower wheel is large in elasticity and does not affect installation. According to the technical scheme, the wheel carrier is connected to one end of the shell through a first connecting shaft, the rolling wheel is connected to the front end of the wheel carrier through a second connecting shaft, a first torsional spring is arranged on the first connecting shaft, a first force arm of the first torsional spring presses the shell, a second force arm of the first torsional spring presses the rear end of the wheel carrier, and the first torsional spring and the second torsional spring are arranged on the shell. The other end of the shell is provided with a second torsion spring through a third connecting shaft, a third force arm of the second torsion spring is arranged in the shell and used for pressing the front end of the wheel carrier, a fourth force arm of the second torsion spring presses the sliding block, and the end of the shell is provided with an adjusting screw rod driving the sliding block to move.

Description

Technical Field

[0001] The utility model belongs to the field of movable door equipment, in particular to an anti-swaying wheel for a linkage door. Background Art

[0002] The traditional anti-sway lower wheel structure for linked doors consists of a housing, a wheel frame connected to one end of the housing via a connecting shaft, and a roller connected to the front end of the wheel frame via a connecting shaft. An adjustment lever is located at the rear end of the wheel frame, and a spring is mounted on the adjustment lever to provide elastic force to the wheel frame. The elastic force of the wheel frame is adjusted by rotating the adjustment lever to compress the spring. However, the following disadvantages exist: 1. The elastic force is limited, resulting in poor anti-sway performance; 2. Adjusting the elastic force to a high value can cause installation inconvenience. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a linkage door anti-swaying wheel which has large elasticity and does not affect installation.

[0004] To solve the above problems, the technical solution adopted by the present invention includes: a shell, a wheel frame connected to one end of the shell through a first connecting shaft, and a roller connected to the front end of the wheel frame through a second connecting shaft, a first torsion spring is provided on the first connecting shaft, the first force arm of the first torsion spring applies pressure to the shell, and the second force arm applies pressure to the rear end of the wheel frame, and it is characterized in that: a second torsion spring is provided at the other end of the shell through a third connecting shaft, the third force arm of the second torsion spring is placed in the shell and is used to press the front end of the wheel frame, the fourth force arm of the second torsion spring applies pressure to the sliding block, and the end of the shell is provided with an adjusting screw for driving the sliding block to move.

[0005] The described linkage door anti-swaying wheel is characterized in that: a screw mounting seat is provided at the end of the shell, and a retaining spring is provided in the screw mounting seat; the adjusting screw is provided in the screw mounting seat and is provided with an annular groove that is engaged with the retaining spring.

[0006] The anti-swaying wheel for the linked door is characterized in that first protrusions for positioning the wheel frame are integrally stamped on both sides of the shell.

[0007] The anti-swaying wheel for the linked door is characterized in that a second protrusion is integrally stamped on the rear end of the wheel frame, and the second force arm of the first torsion spring is connected to the second protrusion.

[0008] The anti-swaying wheel for the linked door is characterized in that a bubble point for positioning the sliding block is provided in the end of the shell.

[0009] The linkage door anti-swaying wheel is characterized in that the end surface of the screw mounting seat is provided with an inclined screw hole, and the screw hole consists of a closed screw hole and an open screw hole.

[0010] The linkage door anti-swaying wheel is characterized in that wave-shaped mounting edges are provided on both sides of the shell.

[0011] The advantages of the linkage door anti-sway wheel of the present invention are as follows: 1. Two torsion springs are used to apply pressure to the wheel frame, which has greater elastic force and better anti-sway performance; 2. Since the initial compression of the wheel frame does not contact the force arm of the second torsion spring, it is more labor-saving during installation.

[0012] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the anti-swaying wheel of the linkage door of the utility model;

[0014] Figure 2 This is a cross-sectional view of the anti-swaying wheel of the linkage door of the utility model;

[0015] Figure 3 This is an exploded view of the anti-swaying wheel of the linkage door of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the housing of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the screw mounting seat of the utility model. DETAILED DESCRIPTION

[0018] Reference Figure 1-5 As shown, the linkage door anti-swaying wheel of the present invention includes a housing 1, a wheel frame 3 connected to one end of the housing 1 through a first connecting shaft 2, and a roller 5 connected to the front end of the wheel frame 3 through a second connecting shaft 4. A first torsion spring 6 is provided on the first connecting shaft 2, and the first force arm 7 of the first torsion spring 6 applies pressure to the housing 1, and the second force arm 8 of the first torsion spring 6 applies pressure to the rear end of the wheel frame 3. A second torsion spring 10 is provided at the other end of the housing 1 through a third connecting shaft 9. The third force arm 11 of the second torsion spring 10 is placed in the housing 1 and is used to press the front end of the wheel frame 3, and the fourth force arm 12 of the second torsion spring 10 applies pressure to the sliding block 13. An adjusting screw 14 is provided at the end of the housing 1 to drive the sliding block 13 to move. By rotating the adjusting screw 14, the sliding block 13 is pushed forward to compress the second torsion spring 10, thereby achieving adjustment of the elastic force. When the wheel carrier 3 enters the housing 1 , it contacts the third lever arm 11 of the second torsion spring 10 to increase the elastic force.

[0019] Preferably, a screw mounting seat 15 is provided at the end of the housing 1, and a retaining spring 16 is provided in the screw mounting seat 15. The adjusting screw 14 is provided on the screw mounting seat 15 and is provided with an annular retaining groove 17 that engages with the retaining spring 16, so as to realize the installation and positioning of the screw mounting seat 15.

[0020] Preferably, first protrusions 18 for positioning the wheel frame 3 are integrally stamped on both sides of the housing 1. When the wheel frame 3 is compressed to the limit position, it is positioned by the first protrusions 18 to prevent excessive compression and damage to the product.

[0021] Preferably, the rear end of the wheel frame 3 is integrally stamped with a second protrusion 19, and the second lever arm 8 of the first torsion spring 6 is connected to the second protrusion 19. The second protrusion 19 facilitates the fixing of the second lever arm 8.

[0022] Preferably, a bubble point 20 is provided in the end of the housing 1 for positioning the sliding block 13. When the sliding block 13 slides to the limit position, the bubble point 20 is used to position the sliding block 13 to prevent over-adjustment and damage to the product.

[0023] Preferably, the end surface of the screw mounting base 15 is provided with an inclined screw hole, which consists of a closed screw hole 22 and an open screw hole 23. By inserting a self-tapping screw into the screw hole, when the self-tapping screw is tightened to a certain degree, the top thread of the self-tapping screw will extend out of the open screw hole 23 and contact the inner wall of the door frame, thereby tightening the screw mounting base 15 and the housing 1 to achieve a fixed connection with the door frame.

[0024] Preferably, wavy mounting edges 24 are provided on both sides of the housing 1. The wavy mounting edges 24 are connected to the steps on the inner wall of the door frame. When the housing 1 is tightened, the wavy mounting edges 24 fit tightly against the steps on the inner wall of the door frame to improve the stability of the connection.

[0025] As mentioned above, this does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A linkage door anti-swaying wheel, comprising a housing (1), a wheel frame (3) connected to one end of the housing (1) via a first connecting shaft (2), and a roller (5) connected to the front end of the wheel frame (3) via a second connecting shaft (4), wherein a first torsion spring (6) is provided on the first connecting shaft (2), a first force arm (7) of the first torsion spring (6) applies pressure to the housing (1), and a second force arm (8) applies pressure to the rear end of the wheel frame (3), characterized in that: The other end of the housing (1) is provided with a second torsion spring (10) via a third connecting shaft (9); a third force arm (11) of the second torsion spring (10) is placed in the housing (1) and is used to apply pressure to the front end of the wheel frame (3); a fourth force arm (12) of the second torsion spring (10) applies pressure to the sliding block (13); and an adjusting screw (14) is provided at the end of the housing (1) for driving the sliding block (13) to move.

2. The anti-sway wheel for linked doors according to claim 1, characterized in that: A screw mounting seat (15) is provided at the end of the housing (1), and a retaining spring (16) is provided in the screw mounting seat (15). The adjusting screw (14) is provided in the screw mounting seat (15) and is provided with an annular retaining groove (17) that is engaged with the retaining spring (16).

3. The anti-sway wheel for linked door according to claim 1, characterized in that: First protrusions (18) for positioning the wheel frame (3) are integrally stamped and formed on both sides of the housing (1).

4. The anti-sway wheel for linked door according to claim 1, characterized in that: A second protrusion (19) is integrally stamped and formed at the rear end of the wheel frame (3), and the second force arm (8) of the first torsion spring (6) is connected to the second protrusion (19).

5. The anti-sway wheel for linked door according to claim 1, characterized in that: A bubble point (20) for positioning the sliding block (13) is provided in the end portion of the housing (1).

6. The anti-sway wheel for linked door according to claim 2, characterized in that: The end surface of the screw mounting seat (15) is provided with an inclined screw hole, and the screw hole consists of a closed screw hole (22) and an open screw hole (23).

7. The anti-sway wheel for linked door according to claim 1, characterized in that: Wave-shaped mounting edges (24) are provided on both sides of the housing (1).

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