180-degree floor spring for left-right door opening
By designing a 180-degree angle rotation structure for ground springs, the existing ground springs have solved the problem of large space occupation and inconvenience in access caused by small angles, and the door leaf rotation at a larger angle is achieved and the door is rotated at a larger angle and has higher stability and damage resistance.
Patent Information
- Application Number
- CN202421933302.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The maximum opening and closing angle of the existing ground spring is 116 degrees, which causes the door leaf to occupy a large space, causes inconvenience to people entering and leaving, and is easily damaged by external forces.
A 180-degree spring on the left and right door opening is designed. Through a combined structure of the shell, cam, upper pallet, lower pallet and pulley, the cam can rotate at an angle of 180 degrees, driving the connecting rod and piston compression spring to realize automatic door closing of the door leaf.
The door leaf is rotated 180 degrees, which reduces the door leaf space, improves the convenience of entry and exit, and enhances the stability and damage resistance of the door leaf.
Smart Images
Figure CN223003922U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door closers, in particular to a floor spring for left and right opening doors at 180 degrees. Background Technique
[0002] A floor spring is a hydraulic door closer, usually used for doors that open in both directions, such as glass doors, wooden doors, etc. It can buffer the impact force generated during the closing process of the door, making the door closer and quieter when closing. Currently, the maximum opening and closing angle of a general floor spring is 116 degrees, and the fixed point is 90 degrees. Due to the small angle, the door leaf occupies a large space, causing great inconvenience to people entering and leaving. In addition, the door with a small angle is easily damaged by external forces. Content of the Utility Model
[0003] Aiming at the deficiencies of the prior art, the utility model provides a floor spring for left and right opening doors at 180 degrees, which solves the problem that the maximum opening and closing angle of the existing floor spring in the background technique is 116 degrees, and due to the small angle, it causes great inconvenience to people entering and leaving.
[0004] To achieve the above objectives, the utility model is realized through the following technical solutions: a floor spring for left and right opening doors, including a housing, a cam, an upper support plate, and a first pulley. One end of the top of the housing is provided with a circular hole groove, and the circular hole groove at one end of the top of the housing is threadedly connected to the bottom of the cover plate. The cover plate is internally provided with a circular hole groove, and a connecting shaft is inserted therein. The bottom of the connecting shaft is connected to the cam. An upper support plate is arranged on the top of the cam, and a lower support plate is arranged at the bottom of the cam. A positioning shaft is inserted between the upper support plate and the lower support plate. The outer part of the positioning shaft is rotatably connected to the first pulley. A positioning pin is inserted through the other end of the lower support plate, and a second pulley is sleeved on the outer part of the positioning pin. One end of the connecting rod is connected to the lower support plate and the upper support plate through a support plate screw, and a spring is sleeved on the outer part of the connecting rod. The other end of the connecting rod is connected to the piston through a pin. The piston is located inside the housing, and one end of the housing is threadedly connected to the tail plug.
[0005] Preferably, the upper support plate and the lower support plate are internally provided with grooves, and the grooves inside the upper support plate and the lower support plate are respectively in sliding contact with the bottom of the connecting shaft and the cam, which is beneficial to reducing the friction with the cam and thus prolonging the service life of the cam.
[0006] Preferably, both sides of the cam are arc-shaped structures, and one end of the cam is pointed. Grooves are provided on the surfaces of the arc-shaped structures on both sides of the cam to realize the positioning of the door leaf when it rotates 90 degrees.
[0007] Preferably, two first pulleys are provided, and the two first pulleys are in sliding contact with the outer surface of the cam. A second pulley is provided on the outer side of the other end of the pulley, and the second pulley is in sliding contact with the outer wall of the cam. The first pulley and the second pulley can achieve the effect of automatic reset through the arc-shaped structure on the outer wall surface of the cam.
[0008] Preferably, a cylindrical cavity is formed inside the housing, and the piston is in sliding contact with the inner wall of the cylindrical cavity of the housing. By compressing the spring, a pulling force is generated on the connecting rod, and then a pressure is applied to the surface of the cam, so that the cam can drive the door leaf to close automatically.
[0009] The utility model provides a 180-degree floor spring for left and right opening doors. It has the following beneficial effects:
[0010] For the 180-degree floor spring for left and right opening doors, when the device is in use, the door leaf drives the connecting shaft to rotate, and then the connecting shaft drives the cam to rotate. When the cam rotates, it can rotate 180 degrees to both sides. When the cam rotates, it can drive the upper support plate and the lower support plate to move. Then, the upper support plate and the lower support plate drive one end of the connecting rod to move, and then the connecting rod drags the piston to move inside the housing, compressing the spring. When the cam rotates to 180 degrees, the pointed angle at one end of the cam can be positioned between the two pulleys, so that the cam can rotate at an angle of 180 degrees.
[0011] Thus, it solves the problem that the maximum opening and closing angle of the existing floor spring is 116 degrees, which causes great inconvenience to personnel entering and exiting due to the small angle. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 is an exploded view of the utility model;
[0014] Figure 3 is a schematic diagram of the internal structure of the utility model;
[0015] Figure 4 is a schematic diagram of the cam structure of the utility model;
[0016] Figure 5 is a schematic diagram of the first pulley and the second pulley structures of the utility model.
[0017] In the figure, 1, housing; 2, cover plate; 3, connecting shaft; 4, cam; 5, upper support plate; 6, lower support plate; 7, positioning shaft; 8, first pulley; 9, positioning pin; 10, second pulley; 11, support plate screw; 12, connecting rod; 13, spring; 14, bolt; 15, piston; 16, end plug. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0019] Embodiment 1:
[0020] Refer to Figures 1-5 As shown, a 180-degree floor spring for left and right opening doors includes a housing 1, a cam 4, an upper support plate 5, and a first pulley 8. A circular hole groove is provided at one end of the top of the housing 1, and the circular hole groove at one end of the top of the housing 1 is threadedly connected to the bottom of the cover plate 2. A circular hole groove is provided inside the cover plate 2, and a connecting shaft 3 is inserted therein. The bottom of the connecting shaft 3 is connected to the cam 4. An upper support plate 5 is provided at the top of the cam 4, and a lower support plate 6 is provided at the bottom of the cam 4. Therefore, a positioning shaft 7 is inserted between the upper support plate 5 and the lower support plate 6, and the outer part of the positioning shaft 7 is rotatably connected to the first pulley 8. A positioning pin 9 is inserted through the other end of the lower support plate 6, and a second pulley 10 is sleeved outside the positioning pin 9. One end of a connecting rod 12 is connected between the lower support plate 6 and the upper support plate 5 through a support plate screw 11, and a spring 13 is sleeved outside the connecting rod 12. The other end of the connecting rod 12 is connected to a piston 15 through a pin 14. The piston 15 is located inside the housing 1, and one end of the housing 1 is threadedly connected to a tail plug 16. When the device is in use, the door leaf drives the connecting shaft 3 to rotate, and then the connecting shaft 3 drives the cam 4 to rotate. When the cam 4 rotates, it can rotate 180 degrees to both sides. When the cam 4 rotates, it can drive the upper support plate 5 and the lower support plate 6 to move. Then, the upper support plate 5 and the lower support plate 6 drive one end of the connecting rod 12 to move, and then the connecting rod 12 drags the piston 15 to move inside the housing 1, compressing the spring 13. When the cam 4 rotates to 180 degrees, the pointed angle at one end of the cam 4 can be positioned between the two pulleys, so that the cam 4 can rotate at an angle of 180 degrees.
[0021] Embodiment 2:
[0022] Refer to Figures 2-3As shown, the upper support plate 5 and the lower support plate 6 are internally provided with grooves, and the internal grooves of the upper support plate 5 and the lower support plate 6 are respectively in sliding contact with the bottom of the connecting shaft 3 and the cam 4, which is beneficial to reducing friction with the cam 4 and thus extending the service life of the cam 4. Both sides of the cam 4 are in an arc-shaped structure, and one end of the cam 4 is in a pointed shape. Grooves are provided on the surfaces of the arc-shaped structures on both sides of the cam 4. By providing grooves on both sides of the cam 4, it is possible to position the door leaf when it rotates 90 degrees. Two first pulleys 8 are provided. The two first pulleys 8 are in sliding contact with the outer surface of the cam 4, and a second pulley 10 is provided on the outer side of the other end of the pulley. The second pulley 10 is in sliding contact with the outer wall of the cam 4. The first pulley 8 and the second pulley 10 can achieve the effect of automatic return through the arc-shaped structure on the outer wall surface of the cam 4.
[0023] Working principle: When the device is in use, the door leaf drives the connecting shaft 3 to rotate, and then the connecting shaft 3 drives the cam 4 to rotate. When the cam 4 rotates, it can rotate 180 degrees to both sides. When the cam 4 rotates, it can drive the upper support plate 5 and the lower support plate 6 to move. Then, the upper support plate 5 and the lower support plate 6 drive one end of the connecting rod 12 to move, and then the connecting rod 12 drags the piston 15 to move inside the housing 1, compressing the spring 13. When the cam 4 rotates to 180 degrees, the pointed end of the cam 4 can be positioned between the two pulleys, so that the cam 4 can rotate 180 degrees.
[0024] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0025] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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 floor spring for opening doors 180 degrees left or right, characterized by: The invention comprises a housing (1), a cam (4), an upper supporting plate (5) and a first pulley (8); a circular hole groove is formed at one end of the top of the housing (1), and the circular hole groove at one end of the top of the housing (1) is threadedly connected to the bottom of the cover plate (2); a circular hole groove is formed inside the cover plate (2), and a connecting shaft (3) is inserted inside the cover plate (2); the bottom of the connecting shaft (3) is connected to the cam (4); an upper supporting plate (5) is provided at the top of the cam (4), and a lower supporting plate (6) is provided at the bottom of the cam (4); a positioning shaft (7) is inserted between the upper supporting plate (5) and the lower supporting plate (6); The outside of the positioning shaft (7) is rotatably connected to the first pulley (8), the other end of the lower support plate (6) is inserted with a positioning pin (9), and the outside of the positioning pin (9) is sleeved with a second pulley (10), the lower support plate (6) and the upper support plate (5) are connected to one end of a connecting rod (12) through a support plate screw (11), and the outside of the connecting rod (12) is sleeved with a spring (13), the other end of the connecting rod (12) is connected to a piston (15) through a latch (14), and the piston (15) is located inside the housing (1), and one end of the housing (1) is threadedly connected to a tail plug (16).
2. A 180-degree floor spring for left and right doors according to claim 1, characterized in that: The upper support plate (5) and the lower support plate (6) are provided with grooves inside, and the grooves inside the upper support plate (5) and the lower support plate (6) are in sliding contact with the connecting shaft (3) and the bottom of the cam (4) respectively.
3. A 180-degree floor spring for left and right doors according to claim 1, characterized in that: The two sides of the cam (4) are in an arc-shaped structure, and one end of the cam (4) is in a sharp angle shape.
4. The floor spring for a door opening 180 degrees left or right according to claim 1, characterized in that: Two first pulleys (8) are provided, and the two first pulleys (8) are in sliding contact with the outer surface of the cam (4), and a second pulley (10) is provided on the outer side of the other end of the pulley, and the second pulley (10) is in sliding contact with the outer wall of the cam (4).
5. The floor spring for door opening 180 degrees left or right according to claim 1, characterized in that: A cylindrical cavity is provided inside the housing (1), and the piston (15) is in sliding contact with the inner wall of the cylindrical cavity of the housing (1).