Piston structure of hydraulic hinge

Abstract

The piston structure of the hydraulic hinge comprises a body, a through cavity is formed in the body, a spiral groove and a vertical groove are formed in the side wall of the body, the length direction of the vertical groove is consistent with the length direction of the body, the vertical groove is located on one side of the spiral groove, and the top end of the spiral groove is located above the vertical groove and spirally arranged downwards. The spiral groove and the vertical groove are communicated with the cavity, and the longitudinal length of the vertical groove is larger than or equal to the longitudinal length of the spiral groove. The spiral groove and the vertical groove are formed in the body, so that during machining, the body can be directly and fixedly machined, and the spiral groove and the vertical groove do not need to be machined on different workpieces; the effect of lightly opening the door when the hinge is used can be achieved through the spiral groove; through the vertical groove, it is guaranteed that after the body is connected with the main shaft, enough moving space is reserved for the piston, and the use requirement is met.

Description

Technical Field

[0001] The utility model belongs to an important component of a hydraulic hinge, in particular to a piston structure of a hydraulic hinge. Background Art

[0002] At present, ordinary hinges are widely used as hinges for building doors and windows, and existing doors and windows are mainly opened and closed in two ways. The first is to use traditional folding hinges, but this hinge only has a hinge function. When users close the door casually, they usually need to push one side of the door toward the door frame with force. This can easily lead to excessive force causing the door and door frame to collide loudly or produce a huge impact between the door and door frame, which will reduce the service life of the door. The second is a hydraulic hinge, which uses hydraulic action to control the closing speed through hydraulic buffering to meet humanized use requirements. For example, application number 202110027540.9 discloses a hydraulic assembly and a hydraulic hinge, wherein a spiral groove is provided on the hydraulic sleeve and a corresponding strip groove is provided on the hydraulic rod. Therefore, during processing, the grooves on both the hydraulic sleeve and the hydraulic rod need to be processed separately. The processing process is relatively cumbersome, and the workpiece needs to be positioned and fixed multiple times, which increases the difficulty of processing. Utility Model Content

[0003] The purpose of the present utility model is to provide a piston structure of a hydraulic hinge that can solve at least one of the above problems.

[0004] According to one aspect of the utility model, a piston structure of a hydraulic hinge is provided, comprising a main body, a through cavity being provided in the main body, a spiral groove and a vertical groove being provided on the side wall of the main body, the length direction of the vertical groove being consistent with the length direction of the main body, the vertical groove being located on one side of the spiral groove, the top end of the spiral groove being located above the vertical groove and being spirally arranged downward, the spiral groove and the vertical groove both being connected to the cavity, and the longitudinal length of the vertical groove being greater than or equal to the longitudinal length of the spiral groove.

[0005] The beneficial effects of the present invention are as follows: by providing the spiral groove and the vertical groove on the main body, during processing, the main body can be directly fixed and processed without the need to process the spiral groove and the vertical groove on different workpieces; the spiral groove can realize the effect of the hinge opening lightly when in use; the vertical groove ensures that after the main body is connected to the main shaft, sufficient moving space is reserved for the piston to meet the use requirements.

[0006] In some embodiments, the bottom end of the spiral groove is higher than the bottom end of the vertical groove, thereby facilitating the installation and coordination of the body and the external structure, and ensuring that the spiral groove, the vertical groove and other structures do not affect each other.

[0007] In some embodiments, there are two spiral grooves, evenly distributed on the side wall of the body, with the two spiral grooves having the same height and the same rotation direction. Thus, by providing two spiral grooves, the smoothness of the piston rotation can be improved, thereby improving the stability of the main shaft rotation on the hinge.

[0008] In some embodiments, there are two vertical slots, which are symmetrical. Thus, by providing two vertical slots, it is convenient to connect the external structure after passing through the two vertical slots, and the stability of the piston movement is improved.

[0009] In some embodiments, a horizontal groove is provided on the sidewall of the main body. The horizontal groove is arranged horizontally and is located at the top of the spiral groove. The horizontal groove is connected to the spiral groove. Therefore, by providing the horizontal groove, when the door leaf is in the open position, the external structure is located in the horizontal groove, thereby positioning the door leaf at the opening angle, preventing the main body from further rotation, and meeting the opening angle requirement.

[0010] In some embodiments, a mounting groove is provided on the outer periphery of the top of the body, and the mounting groove is located above the horizontal groove. Thus, by providing the mounting groove, the installation of the external sealing ring can be facilitated.

[0011] In some embodiments, a mounting step is provided in the cavity, and the mounting step is located above the horizontal groove. Thus, by providing the mounting step, it is convenient to perform position-limiting installation of structures such as a hydraulic oil valve seat installed in the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the piston structure of the hydraulic hinge of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the piston structure of the hydraulic hinge of the utility model from another perspective. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings.

[0015] Reference Figure 1 and Figure 2 The piston structure of the hydraulic hinge includes a body 1, which is provided with a through cavity 11. The side wall of the body 1 is provided with a spiral groove 12 and a vertical groove 13. The length direction of the vertical groove 13 is consistent with the length direction of the body 1. The vertical groove 13 is located on one side of the spiral groove 12. The top of the spiral groove 12 is located above the vertical groove 13 and is spirally arranged downward. The spiral groove 12 and the vertical groove 13 are both connected to the cavity 11. The longitudinal length of the vertical groove 13 is greater than or equal to the longitudinal length of the spiral groove 12. Among them, the body 1 is cylindrical, which is convenient for installation in the sleeve of the hydraulic hinge.

[0016] During processing, after the main body 1 is fixed, the spiral groove 12 and the vertical groove 13 can be processed on the same machine, which is convenient for processing and helps improve processing efficiency. By providing a cavity 11, it is convenient for one end of the main shaft on the hinge to extend into the cavity 11 and be connected through the connecting pin that passes through the vertical groove 13; by providing a spiral groove 12, it is convenient for the limiting pin on the hinge to pass through the spiral groove 12 for fixation. Therefore, when the main body 1 moves under the push of the main shaft, it is guided by the limiting pin and can rotate along the direction of the spiral groove 12. At the same time, the longitudinal length of the vertical groove 13 is greater than or equal to the longitudinal length of the spiral groove 12, ensuring that when the external limiting pin moves from the top to the bottom relative to the spiral groove 12, the main body 1 can have sufficient movement position.

[0017] The spiral coefficient of the spiral groove 12 in the piston structure of the hydraulic hinge of the present invention is smaller than the spiral coefficient of the spiral groove in the comparative patent disclosed in the background art, which can further achieve the effect of the hydraulic hinge opening the door lightly and closing the door forcefully.

[0018] The bottom end of the spiral groove 12 is higher than the bottom end of the vertical groove 13. Therefore, it is convenient for the main body 1 to be matched with each corresponding connection structure and to be installed conveniently.

[0019] There are two spiral grooves 12, evenly distributed on the side wall of the main body 1. The two spiral grooves 12 are of the same height and rotate in the same direction. Therefore, the corresponding external connecting pin can pass through the two spiral grooves 12, facilitating the smooth rotation of the main body 1 during rotation, thereby facilitating the smooth opening or closing of the door leaf.

[0020] There are two vertical slots 13, and the two vertical slots 13 are symmetrical, so as to facilitate the through-installation of the external structure.

[0021] The side wall of the main body 1 is provided with a horizontal groove 14. The horizontal groove 14 is arranged horizontally and is located at the top of the spiral groove 12. The horizontal groove 14 is connected to the spiral groove 12. Therefore, when the door leaf is opened, the main body 1 rotates under the guidance of the spiral groove 12. When the horizontal groove 14 rotates to the limit pin, it is limited by the horizontal groove 14 to ensure the positioning of the door leaf opening angle.

[0022] The outer periphery of the top of the body 1 is provided with a mounting groove 15, and the mounting groove 15 is located above the horizontal groove 14. By providing the mounting groove 15, the sealing ring can be conveniently sleeved directly on the mounting groove 15.

[0023] The cavity 11 is provided with an installation step 16, which is located above the horizontal groove 14. Thus, by providing the installation step 16, it is convenient to limit the installation of structures such as the hydraulic oil valve seat installed in the cavity, which is convenient for the rapid installation of the external structure.

[0024] The above are only preferred embodiments of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. The piston structure of the hydraulic hinge is characterized by: The invention comprises a body (1), wherein a through cavity (11) is provided in the body (1), and a spiral groove (12) and a vertical groove (13) are provided on the side wall of the body (1), wherein the length direction of the vertical groove (13) is consistent with the length direction of the body (1), and the vertical groove (13) is located on one side of the spiral groove (12), and the top end of the spiral groove (12) is located above the vertical groove (13) and is spirally arranged downward, wherein the spiral groove (12) and the vertical groove (13) are both through the cavity (11), and the longitudinal length of the vertical groove (13) is greater than or equal to the longitudinal length of the spiral groove (12).

2. The piston structure of the hydraulic hinge according to claim 1, characterized in that: The bottom end of the spiral groove (12) is higher than the bottom end of the vertical groove (13).

3. The piston structure of the hydraulic hinge according to claim 2, characterized in that: There are two spiral grooves (12) evenly distributed on the side wall of the body (1); the two spiral grooves (12) have the same height and the same rotation direction.

4. The piston structure of the hydraulic hinge according to claim 3, characterized in that: There are two vertical grooves (13), and the two vertical grooves (13) are symmetrical.

5. The piston structure of the hydraulic hinge according to any one of claims 1 to 4, characterized in that: The side wall of the body (1) is provided with a horizontal groove (14), which is arranged horizontally and located at the top end of the spiral groove (12). The horizontal groove (14) is connected to the spiral groove (12).

6. The piston structure of the hydraulic hinge according to claim 5, characterized in that: A mounting groove (15) is provided on the outer periphery of the top of the body (1), and the mounting groove (15) is located above the horizontal groove (14).

7. The piston structure of the hydraulic hinge according to claim 6, characterized in that: An installation step (16) is provided in the cavity (11), and the installation step (16) is located above the horizontal groove (14).

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