A ground spring device capable of adjusting door opening and closing speed

Abstract

The utility model discloses an adjustable switch door speed's ground spring device, including the casing, be equipped with the cavity in the casing, the cavity at least includes the first sealing element of end portion, the center of first sealing element has the oil needle base of screwing in the axial direction, and the oil needle on the oil needle base is used for adjusting the speed of ground spring oil, realizes the adjustment of closing door speed, wherein, the end of oil needle base is away from the oil needle and extends to the casing outside, and the end part of casing is provided with switch door speed adjusting mechanism, and switch door speed adjusting mechanism at least includes driven element and driving element, and driven element coaxially covers and sets on the oil needle base extension casing part, and driving element is engaged with driven element, and at least part of driving element projects the casing surface, when rotating through the tool and push driving element, make the oil needle base on the screwing of first sealing element move forward and backward, thereby control oil circuit size to change ground spring's switch door speed, compared with traditional structure adjustment is simpler, is applicable to the door leaf of smaller door gap.

Description

Technical Field

[0001] This utility model relates to the field of hardware accessories, and in particular to a floor spring device with adjustable door opening and closing speed. Background Technology

[0002] Revolving doors are widely used in buildings such as hotels, restaurants, and office buildings because they are aesthetically pleasing, space-saving, and have good sealing performance. Revolving doors are usually installed using floor springs to achieve their rotation function.

[0003] For example, the double-torsion vertical floor spring with announcement number CN109322573A includes a support arm. A cover is fitted onto the outer side of the upper end of the support arm via a bearing. An upward-facing connecting shaft is coaxially connected to the upper end of the support arm. An outer sleeve is fitted over the connecting shaft. Two torsion springs are installed between the outer sleeve and the connecting shaft. A torsion adjustment ring is installed between the two torsion springs. Both the torsion springs and the torsion adjustment ring are fitted over the connecting shaft. The first end of each torsion spring is fixed to the connecting shaft, and the second end is fixed to the torsion adjustment ring. A torsion adjustment opening is provided on the outer sleeve at a position corresponding to the torsion adjustment ring. A torsion adjustment pin is provided between the torsion adjustment ring and the torsion adjustment opening. An upward-facing oil cup is provided at the upper end of the connecting shaft. A rotating piston is threaded inside the oil cup near its lower end. A spline hole is coaxially provided inside the rotating piston. A one-way valve is provided at the lower end of the spline hole. An oil needle hole is provided on the one-way valve. Extending to the upper and lower ends of the one-way valve, an upward-pointing splined shaft is inserted into the splined hole. The splined shaft is fixed to the outer sleeve. An oil needle is coaxially arranged inside the splined shaft, with the oil needle facing the oil needle hole. A sealing sleeve is provided between the upper end of the splined hole and the splined shaft. Hydraulic oil is contained in the oil cup below the sealing sleeve. A height adjustment device is provided at the upper end of the oil needle. The height adjustment device allows the hydraulic oil at the upper and lower ends of the rotating piston to exchange at different speeds during the opening and closing of the door, making the closing speed controllable. This is mainly achieved by pressing the adjusting shaft inward through the adjusting hole, causing the drive wheel and the driven wheel to mesh. Rotating the wheel causes the oil needle to rise and fall, thereby adjusting the speed of oil flowing through the oil needle hole and thus adjusting the closing speed. However, this structure has a drawback in practical use: the adjusting shaft requires a hexagonal tool to be inserted for adjustment. When the gap between the door and the ground is small, the hexagonal tool is difficult to insert, making the adjustment work unusable. Therefore, further improvement is necessary. Utility Model Content

[0004] The purpose of this invention is to provide a floor spring device with adjustable door opening and closing speed to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An adjustable door opening and closing speed floor spring device includes a housing with a cavity inside. The cavity includes at least a first sealing element at one end. An oil needle seat is axially screwed to the center of the first sealing element. An oil needle on the oil needle seat is used to adjust the oil flow speed of the floor spring, thereby adjusting the closing speed. The end of the oil needle seat away from the oil needle extends outside the housing. The end of the housing is provided with a door opening and closing speed adjustment mechanism. The door opening and closing speed adjustment mechanism includes at least a driven element and a driving element. The driven element is coaxially sleeved on the portion of the oil needle seat that extends out of the housing. The driving element meshes with the driven element, and at least a portion of the driving element protrudes from the surface of the housing.

[0006] Furthermore, the door opening and closing speed adjustment mechanism also includes a positioning pin, the active element is rotatably mounted on the positioning pin, and the positioning pin is connected to the first sealing element.

[0007] Furthermore, a first piston element is also provided in the cavity, and the first piston element has an oil passage, and the oil needle is at least partially inserted into the oil passage.

[0008] Furthermore, it includes a rotating shaft disposed within the cavity and a second piston element, the rotating shaft extending at least partially outside the housing, the rotating shaft driving the second piston element to reciprocate along the axial direction of the cavity when rotating, and the second piston element driving the first piston element to move linearly at least when the door is opened.

[0009] Furthermore, a second sealing element is fixedly provided in the cavity. The second sealing element is disposed between the first piston element and the second piston element. A first oil cavity is formed between the first piston element and the first sealing element, and a second oil cavity is formed between the first piston element and the second sealing element. The oil passage is connected to the first oil cavity and the second oil cavity.

[0010] Furthermore, a compression spring is provided in the first oil chamber, with one end of the compression spring abutting against the first sealing element and the other end abutting against the first piston element.

[0011] Compared with the prior art, this technical solution provides a floor spring device with adjustable door opening and closing speed, which has the following advantages: by coaxially sleeved a driven element on the oil needle seat, the driving element and the driven element are engaged. When the driving element is pushed to rotate by a tool, the driving element drives the driven element to rotate, causing the oil needle seat screwed on the first sealing element to move back and forth, changing the relative position of the oil needle, thereby controlling the size of the oil circuit to change the door opening and closing speed of the floor spring; compared with the traditional structure, the adjustment is simpler and it is suitable for door leaves with small door gaps. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a side view of the present invention.

[0015] Figure 3 This is a half-sectional schematic diagram of the present invention.

[0016] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0017] Figure 5 This is an exploded view diagram of this utility model.

[0018] As shown in the figure: housing 10, cavity 101, first sealing element 20, oil needle seat 30, oil needle 31, door opening and closing speed adjustment mechanism 40, driven element 41, driving element 42, positioning pin 43, first piston element 50, oil passage 501, rotating shaft 60, second piston element 70, second sealing element 80, compression spring 90. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, 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 a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0020] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] It should be understood that although the terms "first," "second," "third," etc., may be used to describe various components in this invention, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of this invention, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] refer to Figures 1 to 5 An adjustable door opening and closing speed floor spring device includes a housing 10, a cavity 101 inside the housing 10, and a first sealing element 20 at least at the end inside the cavity 101. An oil needle seat 30 is screwed axially to the center of the first sealing element 20, and an oil needle 31 on the oil needle seat 30 is used to adjust the oil flow speed of the floor spring to realize the adjustment of the door closing speed. The oil needle holder 30 extends beyond the housing 10 at one end away from the oil needle 31. A door opening / closing speed adjustment mechanism 40 is provided at the end of the housing 10. The door opening / closing speed adjustment mechanism 40 includes at least a driven element 41 and a driving element 42. The driven element 41 is coaxially sleeved on the portion of the oil needle holder 30 extending beyond the housing 10. The driving element 42 meshes with the driven element 41, and at least a portion of the driving element 42 protrudes from the surface of the housing 10. Specifically, by coaxially sleeved the driven element 41 on the oil needle holder 30, the driving element 42 and the driven element 41 are... When the active element 42 is rotated by a tool, the active element 42 drives the driven element 41 to rotate, causing the oil needle seat 30 screwed onto the first sealing element 20 to move back and forth, changing the relative position of the oil needle 31, thereby controlling the size of the oil circuit to change the opening and closing speed of the floor spring. It should be noted that gears are provided on the surfaces of the driven element 41 and the active element 42. The gear of the active element 42 protrudes from the surface of the housing, and the active element 42 is driven by external force with the help of a gear tool. Compared with the traditional structure adjustment, it is suitable for door leaves with small gaps and the adjustment is more convenient.

[0027] The door opening and closing speed adjustment mechanism 40 also includes a positioning pin 43, and the active element 42 is rotatably mounted on the positioning pin 43. The positioning pin 43 is connected to the first sealing element 20.

[0028] The cavity 101 is also provided with a first piston element 50, and the first piston element 50 is provided with an oil passage 501. The oil needle 31 is at least partially inserted into the oil passage 501. Specifically, it also includes a rotating shaft 60 and a second piston element 70 provided in the cavity 101. The rotating shaft 60 extends at least partially outside the housing 10. When the rotating shaft 60 rotates, it drives the second piston element 70 to reciprocate along the axial direction of the cavity 101. The second piston element 70 drives the first piston element 50 to move linearly at least when the door is opened.

[0029] A second sealing element 80 is also fixed inside the cavity 101. The second sealing element 80 is disposed between the first piston element 50 and the second piston element 70. A first oil cavity is formed between the first piston element 50 and the first sealing element 20, and a second oil cavity is formed between the first piston element 50 and the second sealing element 80. The oil passage 501 communicates with the first oil cavity and the second oil cavity. A compression spring 90 is disposed inside the first oil cavity. One end of the compression spring 90 abuts against the first sealing element 20, and the other end abuts against the first piston element 50.

[0030] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0031] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A floor spring device with adjustable door opening and closing speed, comprising a housing (10), wherein a cavity (101) is provided inside the housing (10), and the cavity (101) includes at least a first sealing element (20) at one end, wherein an oil needle seat (30) is axially screwed to the center of the first sealing element (20), and an oil needle (31) on the oil needle seat (30) is used to adjust the oil flow speed of the floor spring, thereby adjusting the door closing speed; characterized in that: The end of the oil needle holder (30) away from the oil needle (31) extends to the outside of the housing (10). The end of the housing (10) is provided with a door opening and closing speed adjustment mechanism (40). The door opening and closing speed adjustment mechanism (40) includes at least a driven element (41) and a driving element (42). The driven element (41) is coaxially sleeved on the part of the oil needle holder (30) that extends out of the housing (10). The driving element (42) meshes with the driven element (41), and at least a portion of the driving element (42) protrudes from the surface of the housing (10).

2. The floor spring device with adjustable door opening and closing speed according to claim 1, characterized in that: The door opening and closing speed adjustment mechanism (40) also includes a positioning pin (43), the active element (42) is rotatably mounted on the positioning pin (43), and the positioning pin (43) is connected to the first sealing element (20).

3. The floor spring device with adjustable door opening and closing speed according to claim 1, characterized in that: The cavity (101) is also provided with a first piston element (50), and the first piston element (50) is provided with an oil passage (501), and the oil needle (31) is at least partially inserted into the oil passage (501).

4. The floor spring device with adjustable door opening and closing speed according to claim 3, characterized in that: It includes a rotating shaft (60) disposed in the cavity (101) and a second piston element (70), the rotating shaft (60) extending at least partially outside the housing (10), the rotating shaft (60) driving the second piston element (70) to reciprocate along the axial direction of the cavity (101) when rotating, and the second piston element (70) driving the first moving element to move linearly at least when the door is opened.

5. A floor spring device with adjustable door opening and closing speed according to claim 4, characterized in that: The cavity (101) is also fixed with a second sealing element (80), which is disposed between the first piston element (50) and the second piston element (70). A first oil chamber is formed between the first piston element (50) and the first sealing element (20), and a second oil chamber is formed between the first piston element (50) and the second sealing element (80). The oil passage (501) is connected to the first oil chamber and the second oil chamber.

6. A floor spring device with adjustable door opening and closing speed according to claim 5, characterized in that: A compression spring (90) is provided in the first oil chamber. One end of the compression spring (90) abuts against the first sealing element (20), and the other end abuts against the first piston element (50).

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