Three-stage variable-cam profile spring hydraulic drive assembly

Abstract

The utility model relates to the technical field of hydraulic transmission parts in ground spring door control system discloses three -segment type variable curvature cam ground spring hydraulic transmission assembly, including the shell, the inside fixed connection of shell has the bearing, the inside fixed connection of bearing has the connecting rod, the outer wall fixed connection of connecting rod has the disc, the inside of shell is provided with resistance assembly, the upper surface of shell is provided with the apron, the inside of apron is provided with screw nail, the lower surface rotation is connected in the inside of shell of disc, the outer wall screw thread connection in the inside of shell of screw nail. In the utility model, in the utility model, through pushing the door and driving the connecting rod rotation, the connecting rod drives disc 4 rotation, disc pushes the gyro wheel rotation, gyro wheel drives the pressure rod and makes second spring contract or release the elastic force, thereby reaches the effect that the curvature of disc 4 gradually changes according to the door body opening angle.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic transmission components in floor spring door control systems, and particularly to a hydraulic transmission assembly for a three-section variable curvature cam floor spring. Background Technology

[0002] The three-section variable curvature cam floor spring hydraulic transmission assembly is a core component of modern building door and window opening and closing systems. It is widely used in automatic doors and swing doors of various public buildings, commercial venues and high-end residences. Through the coordinated operation of hydraulic transmission and cam structure, this assembly realizes the smooth opening and closing of the door, playing a key role in improving ease of use and safety.

[0003] Currently, most common hydraulic transmission components for floor springs on the market use a fixed curvature cam structure. During the door opening process, the transmission ratio and torque output cannot be dynamically adjusted. When the door is in the initial opening stage, the fixed curvature cam cannot provide sufficient starting torque, resulting in difficulty in opening the door. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a three-section variable curvature cam floor spring hydraulic transmission assembly, which aims to improve the problem that the existing three-section variable curvature cam floor spring hydraulic transmission assembly cannot dynamically adjust the transmission ratio and torque output during the door opening process.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A three-section variable curvature cam floor spring hydraulic transmission assembly includes a housing, a bearing fixedly connected inside the housing, a connecting rod fixedly connected inside the bearing, a disc fixedly connected to the outer wall of the connecting rod, a resistance component disposed inside the housing, a cover plate disposed on the upper surface of the housing, a screw disposed inside the cover plate, the lower surface of the disc rotatably connected to the inside of the housing, and the outer wall of the screw threadedly connected to the inside of the housing.

[0007] Preferably, the resistance component includes a sleeve disposed inside the housing, a second spring disposed inside the sleeve, a pressure rod slidably connected inside the sleeve, the top end of the second spring disposed on the outer wall of the pressure rod, a roller rotatably connected inside the pressure rod, and the outer wall of the roller rotatably connected to the outer wall of the disc.

[0008] Preferably, a first spring is provided inside the disk, and a washer is slidably connected inside the disk, with the top end of the first spring disposed on the outer wall of the washer.

[0009] Preferably, a third slider is slidably connected inside the outer casing, and a fixing rod is fixedly connected to the outer wall of the third slider.

[0010] Preferably, the outer wall of the fixing rod is slidably connected to the inside of the housing, and the outer wall of the fixing rod is fixedly connected to a first slider.

[0011] Preferably, the outer wall of the first slider is slidably connected to the inside of the housing, and the outer wall of the first slider is provided with a tension spring.

[0012] Preferably, the top end of the tension spring is disposed inside the housing, and a third spring is disposed inside the housing.

[0013] Preferably, a second slider is fixedly connected to the top end of the third spring, and one end of the second slider is engaged inside the sleeve.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by pushing the door to drive the connecting rod to rotate, the connecting rod to drive the disc to rotate, the disc to drive the roller to rotate, and the roller to drive the pressure rod to cause the second spring to contract or release its elastic force, thereby achieving the effect of gradually changing the curvature of the disc according to the opening angle of the door.

[0016] 2. In this utility model, by pushing the door, the disc gradually rotates. When the door is about to close, the roller pushes the pad to slide, and the pad pushes the first spring to contract. When the door is closed, the first spring releases its elastic force to push the pad to reset, thereby achieving the effect of preventing the door from colliding violently with the door frame, the ground or other obstacles.

[0017] 3. In this utility model, by pushing the third slider to drive the fixed rod to slide, the fixed rod pushes the first slider to slide, the first slider causes the tension spring to stretch, the first slider pushes the second slider to slide to release the restriction on the sleeve and cause the third spring to contract, and then the sleeve can be taken out for repair or replacement, thereby achieving the effects of improving maintenance efficiency, reducing costs and enhancing system reliability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the three-section variable curvature cam floor spring hydraulic transmission assembly proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer shell of the three-section variable curvature cam floor spring hydraulic transmission assembly proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the sleeve cross-sectional structure of the three-section variable curvature cam floor spring hydraulic transmission assembly proposed in this utility model.

[0021] Figure 4This is a schematic diagram of the cam cross-sectional structure of the three-section variable curvature cam floor spring hydraulic transmission assembly proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the third spring in the three-section variable curvature cam floor spring hydraulic transmission assembly proposed in this utility model.

[0023] Legend:

[0024] 1. Outer shell; 2. Bearing; 3. Connecting rod; 4. Disc; 5. First spring; 6. Washer; 7. Sleeve; 8. Second spring; 9. Pressure rod; 10. Roller; 11. Third slider; 12. Fixing rod; 13. Tension spring; 14. First slider; 15. Second slider; 16. Third spring; 17. Cover plate; 18. Screw. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Reference Figures 1-3 An embodiment of this utility model is provided: a three-section variable curvature cam floor spring hydraulic transmission assembly, including a housing 1, a bearing 2 fixedly connected inside the housing 1, a connecting rod 3 fixedly connected inside the bearing 2, a disc 4 fixedly connected to the outer wall of the connecting rod 3, a resistance assembly provided inside the housing 1, a cover plate 17 provided on the upper surface of the housing 1, a screw 18 provided inside the cover plate 17, the lower surface of the disc 4 rotatably connected to the inside of the housing 1, and the outer wall of the screw 18 threadedly connected to the inside of the housing 1.

[0027] Specifically, the disc 4 is a three-section variable curvature cam used to smoothly open and close the door, thereby achieving the effect of accurately matching the torque requirements at different stages. The outer shell 1 and the cover plate 17 are used to protect the internal structure from external interference that affects the movement of the internal structure. The bearing 2 is used to make the connecting rod 3 rotate more easily. The connecting rod 3 is used to connect the door and the disc 4. The screw 18 is used to fix the outer shell 1 and the cover plate 17 together. The transmission component is used to provide resistance to the disc 4.

[0028] Reference Figures 3-4The resistance assembly includes a sleeve 7, which is disposed inside the housing 1. A second spring 8 is disposed inside the sleeve 7. A pressure rod 9 is slidably connected inside the sleeve 7. The top end of the second spring 8 is disposed on the outer wall of the pressure rod 9. A roller 10 is rotatably connected inside the pressure rod 9. The outer wall of the roller 10 is rotatably connected to the outer wall of the disc 4. A first spring 5 is disposed inside the disc 4. A washer 6 is slidably connected inside the disc 4. The top end of the first spring 5 is disposed on the outer wall of the washer 6.

[0029] Specifically, roller 10 is a ceramic grinding wheel, sleeve 7 is used to protect the internal second spring 8 from external interference so that it can operate normally. The second spring 8 is used to push roller 10 and pressure rod 9 to adapt to the outer wall shape of disk 4 when disk 4 rotates, thereby increasing the resistance to opening the door. This increases the resistance of the three-section variable curvature cam and adapts to the squeezing at different stages of opening the door. Disk 4 and first spring 5 are used to add the last resistance when the door is about to close, thereby reducing noise and structural damage risk, and achieving the effect of extending the service life of the door and transmission components.

[0030] Reference Figures 4-5 The outer casing 1 has a third slider 11 slidably connected inside, and a fixing rod 12 is fixedly connected to the outer wall of the third slider 11. The outer wall of the fixing rod 12 is slidably connected inside the outer casing 1, and a first slider 14 is fixedly connected to the outer wall of the fixing rod 12. The outer wall of the first slider 14 is slidably connected inside the outer casing 1, and a tension spring 13 is provided on the outer wall of the first slider 14. The top end of the tension spring 13 is located inside the outer casing 1, and a third spring 16 is provided inside the outer casing 1. A second slider 15 is fixedly connected to the top end of the third spring 16, and one end of the second slider 15 is engaged inside the sleeve 7.

[0031] Specifically, the third spring 16 is used to push the second slider 15 to lock the sleeve 7. The outer wall of the second slider 15 has a groove for the first slider 14 to push the second slider 15. The tension spring 13 is used to automatically reset after the first slider 14 pushes the second slider 15. The outer wall of the sleeve 7 has a rectangular groove for quick release of the sleeve 7 with the second slider 15. The third slider 11 is used to push the fixing rod 12. The fixing rod 12 is used to push the first slider 14 to slide. The first slider 14 is used to push the second slider 15 away from the rectangular groove in the sleeve 7. The second slider 15 is used to lock the sleeve 7, thereby achieving quick disassembly of the floor spring component, thus reducing maintenance difficulty. Quick disassembly of the floor spring component facilitates inspection and maintenance, reducing maintenance difficulty.

[0032] Working principle: When the device is needed, pushing the door drives the connecting rod 3 to rotate, thereby driving the disc 4 to rotate inside the outer shell 1. The disc 4 then drives the roller 10 to rotate on the outer wall of the disc 4. Furthermore, the roller 10 drives the pressure rod 9 to cause the second spring 8 to contract or release its elastic force, thereby achieving the effect of gradually changing the curvature of the disc 4 according to the opening angle of the door.

[0033] When the door is closed, pushing the door causes the disc 4 to rotate gradually. When the door is about to close, the roller 10 pushes the pad 6 to slide inside the disc 4, and the pad 6 pushes the first spring 5 to retract. When the door is closed, the first spring 5 releases its elastic force and pushes the pad 6 to return to its original position, thereby preventing the door from colliding violently with the door frame, the ground or other obstacles.

[0034] When the resistance component needs to be repaired or replaced, the third slider 11 is pushed to drive the fixed rod 12 to slide inside the housing 1. The fixed rod 12 then pushes the first slider 14 to slide inside the housing 1. The first slider 14 then stretches the tension spring 13. Furthermore, the first slider 14 pushes the second slider 15 to slide and release the restriction on the sleeve 7, causing the third spring 16 to contract. The sleeve 7 can then be removed for repair or replacement, thereby improving maintenance efficiency, reducing costs, and enhancing system reliability.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-section variable curvature cam floor spring hydraulic transmission assembly, comprising a housing (1), characterized in that: The housing (1) is fixedly connected to a bearing (2), the bearing (2) is fixedly connected to a connecting rod (3), the outer wall of the connecting rod (3) is fixedly connected to a disc (4), the housing (1) is provided with a resistance component, the upper surface of the housing (1) is provided with a cover plate (17), the inside of the cover plate (17) is provided with a screw (18), the lower surface of the disc (4) is rotatably connected to the inside of the housing (1), and the outer wall of the screw (18) is threadedly connected to the inside of the housing (1).

2. The three-section variable curvature cam floor spring hydraulic transmission assembly according to claim 1, characterized in that: The resistance assembly includes a sleeve (7) disposed inside the outer casing (1), a second spring (8) disposed inside the sleeve (7), a pressure rod (9) slidably connected inside the sleeve (7), the top end of the second spring (8) disposed on the outer wall of the pressure rod (9), a roller (10) rotatably connected inside the pressure rod (9), and the outer wall of the roller (10) rotatably connected to the outer wall of the disc (4).

3. The three-section variable curvature cam floor spring hydraulic transmission assembly according to claim 1, characterized in that: The disk (4) is provided with a first spring (5) inside, and a pad (6) is slidably connected inside the disk (4). The top of the first spring (5) is located on the outer wall of the pad (6).

4. The three-section variable curvature cam floor spring hydraulic transmission assembly according to claim 1, characterized in that: The outer shell (1) is slidably connected to a third slider (11), and the outer wall of the third slider (11) is fixedly connected to a fixing rod (12).

5. The three-section variable curvature cam floor spring hydraulic transmission assembly according to claim 4, characterized in that: The outer wall of the fixing rod (12) is slidably connected to the inside of the outer shell (1), and the outer wall of the fixing rod (12) is fixedly connected to the first slider (14).

6. The three-section variable curvature cam floor spring hydraulic transmission assembly according to claim 5, characterized in that: The outer wall of the first slider (14) is slidably connected to the inside of the outer shell (1), and a tension spring (13) is provided on the outer wall of the first slider (14).

7. The three-section variable curvature cam floor spring hydraulic transmission assembly according to claim 6, characterized in that: The top of the tension spring (13) is disposed inside the housing (1), and a third spring (16) is disposed inside the housing (1).

8. The three-section variable curvature cam floor spring hydraulic transmission assembly according to claim 7, characterized in that: The top end of the third spring (16) is fixedly connected to the second slider (15), and one end of the second slider (15) is engaged inside the sleeve (7).

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