Floor spring structure with adjustable buffering function

Abstract

The utility model discloses a floor spring structure with an adjustable buffering function, and particularly relates to the technical field of floor springs, the floor spring structure comprises a shell, a first adjusting valve, a second adjusting valve and a third adjusting valve are sequentially and fixedly connected to the surface of the shell in an inserted mode, a second long oil return hole is formed in the shell, and a second long oil return hole is formed in the second long oil return hole. The second long oil return hole is communicated with the first adjusting valve, the second adjusting valve and the third adjusting valve, and the second long oil return hole is sequentially provided with a first inner oil return hole, a second inner oil return hole, a third inner oil return hole and a fourth inner oil return hole from left to right. The door opening buffering function can be achieved through oil way layout, the structure is safe and reliable, machining is convenient, implementation is easy, the buffering effect is related to the second adjusting valve of the door closing valve, if large flow passes through a throttling opening of the second adjusting valve, the buffering effect fails, and hydraulic oil directly flows back to the second cavity through the first long oil way hole and the third inner oil return hole.

Description

Technical Field

[0001] The utility model relates to the technical field of floor springs, and more specifically, to a floor spring structure with an adjustable buffering function. Background Art

[0002] The floor spring buffer function (Back-check) generates damping after the door is opened quickly to a certain position, and the damping force and range can be adjusted according to the use requirements; this function is used to prevent the door or lock from colliding with the wall when the door is opened quickly with force, or to prevent people from losing weight and falling forward when opening the door quickly during emergency escape.

[0003] Among them, the floor spring products with buffer function on the market at this stage have fixed buffer function and cannot adjust the buffer function. This structure improves the design of existing products to meet the requirements of floor spring products to realize hydraulic adjustable buffer function. Therefore, a new floor spring structure with adjustable buffer function is needed;

[0004] Therefore, in order to solve the above problems, a floor spring structure with adjustable buffering function is proposed. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a floor spring structure with an adjustable buffering function to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a floor spring structure with an adjustable buffering function, comprising a shell, on the surface of which regulating valves one, two and three are inserted and fixedly connected in sequence, a long oil return hole two is provided inside the shell, and the long oil return hole two is in a through-state with regulating valves one, two and three, and the long oil return hole two is provided with inner oil return hole one, inner oil return hole two, inner oil return hole three and inner oil return hole four from left to right in sequence.

[0007] Preferably, a buffer piston is fixedly connected to the interior of the housing, and one-way valve holes with steel balls are provided at both ends of the buffer piston.

[0008] Preferably, a reserved groove with a fixed width is provided on the side surface of the buffer piston, and a reserved hole for installing a filter is also provided on the surface of the reserved groove.

[0009] Preferably, a connecting rod is provided on one side surface of the buffer piston, and a first screw is movably penetrated and connected to one end surface of the connecting rod, and the first screw and the buffer piston are threadedly engaged.

[0010] Preferably, a second screw is movably penetrated and connected to the surface of the other end of the connecting rod, and the second screw is also movably penetrated and connected to a supporting plate, and the supporting plate and the connecting rod are movably fitted.

[0011] Preferably, a cam is installed on the surface of the support plate, and a roller is installed on the surface of one end of the support plate.

[0012] Preferably, a cavity 1 is opened inside the middle end of the shell, a cavity 2 is opened inside one end of the shell, one end of the cavity 1 is connected to a long oil return hole 1, and a spring is fixedly connected to the inner wall of one end of the cavity 1.

[0013] Technical effects and advantages of the utility model:

[0014] Compared with the prior art, the advantage of this floor spring structure with adjustable buffering function is that the door opening buffering function can be realized through the oil circuit layout. It is safe and reliable in structure, easy to process and easy to implement. However, the buffering effect is related to the door closing valve and the regulating valve 2. When a large flow passes through the throttle port of the regulating valve 2, the buffering effect fails, and the hydraulic oil directly flows back to the cavity 2 through the long oil circuit hole 1 and the internal return oil hole 3. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the top surface structure of the utility model.

[0017] Figure 3 This is a partial structural diagram of the buffer piston of the utility model.

[0018] The accompanying drawings are marked as follows: 1. buffer piston; 2. inner oil return hole one; 3. inner oil return hole two; 4. inner oil return hole three; 5. inner oil return hole four; 6. long oil return hole two; 7. cavity one; 8. cavity two; 9. housing; 10. connecting rod; 11. spring; 12. first screw; 13. second screw; 14. support plate; 15. cam; 16. roller; 17. regulating valve one; 18. regulating valve two; 19. regulating valve three; 20. long oil return hole one. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] As attached Figures 1 to 3 A floor spring structure with an adjustable buffering function is shown, comprising a shell 9, on the surface of which a regulating valve 17, a regulating valve 18 and a regulating valve 3 19 are inserted and fixedly connected in sequence, a long oil return hole 2 6 is provided inside the shell 9, and the long oil return hole 2 6 is in a through-state with the regulating valve 17, the regulating valve 18 and the regulating valve 3 19, and the long oil return hole 2 6 is provided with an inner oil return hole 1 2, an inner oil return hole 2 3, an inner oil return hole 3 4 and an inner oil return hole 4 5 from left to right in sequence.

[0022] Among them: a regulating valve three 19 is added to the shell 9 as a regulating valve with a buffer function, and is designed with a long oil return hole two 6, which penetrates the three regulating valves to the inner oil return hole one 2 on the inner wall of the cylinder body, and is designed with a long oil return hole one 20, which penetrates into the cavity one 7 inside the shell 9, and is connected with the bottom of the regulating valve three 19 / regulating valve two 18 hole, and an inner oil return hole three 4 and an inner oil return hole four 5 are processed inside the cylinder body, and the two long oil return holes are sealed with steel balls to prevent internal hydraulic oil leakage.

[0023] Embodiment 2

[0024] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working methods. Figures 1 to 3 As shown, see the following description for details:

[0025] As a preferred embodiment, a buffer piston 1 is fixedly connected to the interior of the housing 9, and both ends of the buffer piston 1 are provided with a one-way valve hole with a steel ball; further, the one-way valve hole can be sealed by the steel ball.

[0026] As a preferred embodiment, a reserved groove with a fixed width is provided on the side of the buffer piston 1, and a reserved hole for installing a filter is also provided on the surface of the reserved groove; further, the required filter can be installed through the reserved hole.

[0027] As a preferred embodiment, a connecting rod 10 is provided on one side surface of the buffer piston 1, and a first screw 12 is movably penetrated and connected to one end surface of the connecting rod 10, and the first screw 12 is threadedly engaged with the buffer piston 1; further, the number of the first screws 12 is set in two groups.

[0028] As a preferred embodiment, the other end surface of the connecting rod 10 is movably connected with a second screw 13, and the second screw 13 is also movably connected with a support plate 14, and the support plate 14 and the connecting rod 10 are movably fitted together; further, the connecting rod 10 can be limited by the support plate 14 in cooperation with the second screw 13.

[0029] As a preferred embodiment, a cam 15 is installed on the surface of the support plate 14, and a roller 16 is installed on the surface of one end of the support plate 14; further, the number of the rollers 16 is set to two groups.

[0030] As a preferred embodiment, a cavity 7 is opened inside the middle end of the shell 9, a cavity 2 8 is opened inside one end of the shell 9, one end of the cavity 7 is connected to a long oil return hole 20, and a spring 11 is fixedly connected to the inner wall of one end of the cavity 7; further, the spring 11 surrounds the periphery of the connecting rod 10 in a surrounding manner.

[0031] The working process of the utility model is as follows:

[0032] Like the conventional floor spring transmission structure, when the door is opened, the cam 15 rotates inward or outward, driving the roller 16, the support plate 14, the connecting rod 10 and the buffer piston 1 to the left, at which time the spring 11 begins to be compressed, and the spring 11 begins to store energy. Due to the displacement of the buffer piston 1, the hydraulic oil in the housing 9 can only flow from the cavity 17 to the cavity 28 through the inner oil return hole 12 when the buffer piston 1 has not moved to the inner oil return hole 2. As the door continues to be opened to a predetermined angle, the buffer piston 1 is driven to the inner oil return hole 2 and the sealing surface of the buffer piston 1 covers the oil hole. At this time, the hydraulic oil in the cavity 17 is intercepted by the sealing surface of the buffer piston 1 and cannot flow through the long return hole 12. The oil hole 26 flows into the cavity 28, and the hydraulic oil can only flow from the long oil return hole 120 through the inner oil return hole 23 and the inner oil return hole 34 to the cavity 28. Since the regulating valve 218 controls the closing speed of the floor spring, there is a slight gap between it and the shell 9, and the hydraulic oil can flow into the cavity through the gap here, but the flow rate is small. Then the hydraulic oil can pass through the long oil return hole 120 and the inner oil return hole 23, push open the steel ball on the right end of the piston and flow to the cavity 28. At this time, the hydraulic oil flow rate can be adjusted by the V-shaped throttle port on the regulating valve 3 19. When the throttle port flow rate is small, a damping effect can be formed, and the hydraulic oil in the cavity 17 can only flow slowly into the cavity 17.

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A floor spring structure with adjustable buffering function, comprising a housing (9), characterized in that: The surface of the housing (9) is inserted and fixedly connected with regulating valve 1 (17), regulating valve 2 (18) and regulating valve 3 (19) in sequence. The interior of the housing (9) is provided with long oil return hole 2 (6). The long oil return hole 2 (6) is in a through-connection state with regulating valve 1 (17), regulating valve 2 (18) and regulating valve 3 (19). The long oil return hole 2 (6) is provided with inner oil return hole 1 (2), inner oil return hole 2 (3), inner oil return hole 3 (4) and inner oil return hole 4 (5) in sequence from left to right.

2. A floor spring structure with adjustable buffering function according to claim 1, characterized in that: A buffer piston (1) is fixedly connected to the interior of the housing (9), and one-way valve holes with steel balls are provided at both ends of the buffer piston (1).

3. A floor spring structure with adjustable buffering function according to claim 2, characterized in that: A reserved groove with a fixed width is provided on the side of the buffer piston (1), and a reserved hole for installing a filter screen is also provided on the surface of the reserved groove.

4. A floor spring structure with adjustable buffering function according to claim 3, characterized in that: A connecting rod (10) is provided on one side surface of the buffer piston (1), and a first screw (12) is movably penetrated and connected to one end surface of the connecting rod (10), and the first screw (12) and the buffer piston (1) are threadedly engaged.

5. A floor spring structure with adjustable buffering function according to claim 4, characterized in that: The other end surface of the connecting rod (10) is movably connected to a second screw (13), and the second screw (13) is also movably connected to a support plate (14). The support plate (14) and the connecting rod (10) are movably fitted.

6. A floor spring structure with adjustable buffering function according to claim 5, characterized in that: A cam (15) is installed on the surface of the support plate (14), and a roller (16) is installed on one end surface of the support plate (14).

7. The floor spring structure with adjustable buffering function according to claim 2, characterized in that: A cavity (7) is provided inside the middle end of the shell (9), a cavity (8) is provided inside one end of the shell (9), one end of the cavity (7) is connected to a long oil return hole (20), and a spring (11) is fixedly connected to the inner wall of one end of the cavity (7).

Images