Hidden adjustable hydraulic hinge

Abstract

The utility model discloses a hidden adjustable hydraulic hinge. The hidden adjustable hydraulic hinge comprises a shell and an adjusting assembly. A hydraulic shaft is arranged in the shell, an axial hydraulic cavity is formed in the hydraulic shaft, a piston is arranged in the hydraulic cavity and provided with a hydraulic hole, an inlet and outlet hole is formed in one end of the hydraulic shaft, and an adjusting screw hole close to one end of the inlet and outlet hole is formed in the back face of the shell. The adjusting assembly comprises a taper needle valve, a spiral gear and an adjusting worm, one end of the taper needle valve penetrates through the inlet and outlet hole to be matched with the hydraulic hole, the spiral gear is connected with the other end of the taper needle valve, and the adjusting worm is arranged in the adjusting screw hole and meshed with the spiral gear. When the door closing speed needs to be adjusted, the adjusting worm drives the spiral gear to rotate and drives the taper needle valve to enter and exit from the hydraulic hole, so that the oil passing amount of the hydraulic hole of the piston is changed, the door closing speed is changed, advancing and retreating of the taper needle valve are changed in the 90-degree direction, and adjustment does not need to be conducted at the end of the hydraulic shaft. Therefore, the door closing speed does not need to be adjusted by dismounting after installation.

Description

Technical Field

[0001] The utility model relates to the field of door control hardware, in particular to a hidden adjustable hydraulic hinge. Background Art

[0002] A hinge enables an object to rotate around a virtual axis and is usually used for connecting and moving parts of various objects such as doors, windows, and box lids. To achieve the slow opening and closing of a door or lid with the aims of being stable, noiseless, and controllable, a hinge with a hydraulic piston rotation is usually adopted. Moreover, the hydraulic hinge can adjust the closing speed. Specifically, a valve needle assembly needs to be set, and the oil return rate of hydraulic oil is controlled by adjusting the depth of insertion of the valve needle assembly into the hydraulic shaft, thereby controlling the closing speed. In this way, the overall axial movement of the valve needle assembly can be achieved by controlling the knob outside the valve needle assembly, and then the depth of insertion of the valve needle assembly into the hydraulic shaft can be controlled. However, the existing hydraulic hinges generally adjust the closing speed at the end of the hinge, but this method is not easy to adjust after installation. For a hidden adjustable hydraulic hinge, the hinge needs to be disassembled to adjust. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a hidden adjustable hydraulic hinge that does not need to be disassembled to adjust the closing speed after installation.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] A hidden adjustable hydraulic hinge includes

[0006] a housing with a hydraulic shaft arranged inside. A hydraulic cavity in the axial direction is arranged in the hydraulic shaft. A piston is arranged in the hydraulic cavity. The piston is provided with a hydraulic hole. One end of the hydraulic shaft is provided with an inlet and outlet hole. An adjusting screw hole close to one end of the inlet and outlet hole is arranged on the back of the housing.

[0007] an adjusting assembly including a taper needle valve, a spiral gear, and an adjusting worm. One end of the taper needle valve passes through the inlet and outlet hole and is installed in cooperation with the hydraulic hole. The spiral gear is connected to the other end of the taper needle valve. The adjusting worm is arranged in the adjusting screw hole and meshes with the spiral gear.

[0008] According to the hidden adjustable hydraulic hinge of the embodiment of the utility model, it has at least the following beneficial effects: When the closing speed needs to be adjusted, the adjusting worm drives the spiral gear to rotate, driving the taper needle valve to enter and exit the hydraulic hole, thereby changing the amount of oil passing through the hydraulic hole of the piston, and further realizing the change of the closing speed. In this way, the forward and backward movement of the taper needle valve is changed in the 90-degree direction of the hydraulic shaft, rather than adjusting at the end of the hydraulic shaft. Therefore, it is not necessary to disassemble and adjust the closing speed after installation.

[0009] According to some embodiments of the present utility model, the hydraulic shaft is provided with a rear end cover, a sealing ring is provided between the rear end cover and the hydraulic shaft, and the inlet and outlet holes are provided in the rear end cover.

[0010] Advantageously, the provision of the rear end cover facilitates the machining of the hydraulic cavity and the setting of the inlet and outlet holes, which is conducive to the installation of the tapered needle valve.

[0011] According to some embodiments of the present utility model, the rear end cover is further provided with a mounting hole communicating with the inlet and outlet holes, and the mounting hole is used for fitting and mounting with the helical gear.

[0012] Advantageously, the provision of the mounting hole in the rear end cover is conducive to the installation of the helical gear.

[0013] According to some embodiments of the present utility model, the mounting hole is a stepped hole, and the helical gear includes a connecting portion connected to the tapered needle valve and a gear portion meshing with the adjusting worm.

[0014] Advantageously, the stepped mounting hole is conducive to the installation of the tapered needle valve in two parts.

[0015] According to some embodiments of the present utility model, a sealing groove is provided between the connecting portion and the gear portion, and a sealing ring is provided in the sealing groove.

[0016] Advantageously, the provision of the sealing groove and the sealing ring serves a sealing function to prevent the hydraulic oil in the hydraulic cavity from leaking through the inlet and outlet holes and the mounting hole.

[0017] According to some embodiments of the present utility model, a docking hole is provided at the front end of the connecting portion, and the docking hole is fixedly connected to the tapered needle valve.

[0018] Advantageously, the provision of the docking hole is conducive to connecting the tapered needle valve to the helical gear.

[0019] According to some embodiments of the present utility model, the tapered needle valve is provided with a ball head installed in the docking hole, and a buckle for restricting the ball head is provided at the opening of the docking hole.

[0020] Advantageously, the front end of the helical gear is movably riveted to the ball head, so that the tapered needle valve can be deflected to a limited extent, which is conducive to the cooperation with the hydraulic hole on the piston. The provision of the ball head and the buckle can prevent the separation of the tapered needle valve and the helical gear.

[0021] According to some embodiments of the present utility model, the adjusting worm is provided with a top head, and the top head is provided with an internal hexagonal hole.

[0022] Advantageously, the provision of the top head and the internal hexagonal hole facilitates the rotational adjustment of the adjusting worm.

[0023] According to some embodiments of the present utility model, there are two said outer shells, the hydraulic shaft is connected with vanes, and the vanes of the two said outer shells are hinged.

[0024] Advantageously, by such an arrangement, the two outer shells can be respectively and concealedly installed on the door frame and the door leaf.

[0025] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of an embodiment of the present utility model;

[0028] Figure 2 It is Figure 1 a schematic diagram from another angle;

[0029] Figure 3 It is Figure 1 a cross-sectional schematic diagram of the hydraulic shaft in

[0030] Figure 4 It is Figure 3 a schematic diagram of the adjusting assembly in

[0031] Reference numerals: outer shell 100, hydraulic shaft 110, hydraulic cavity 120, piston 130, hydraulic hole 140, inlet and outlet hole 150, adjusting screw hole 160, taper needle valve 170, helical gear 180, adjusting worm 190, rear end cover 200, sealing ring 210, mounting hole 220, connecting portion 230, gear portion 240, sealing groove 250, butt joint hole 260, ball head 270, buckle 280, top head 290, hexagon socket hole 300, vane 310. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0033] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understanding of "greater than", "less than", "exceeding", etc. does not include the present number, and understanding of "above", "below", "within", etc. includes the present number. If there is a description of the first and the second, this is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] The following refers to Figures 1 - 4 A concealed adjustable hydraulic hinge will be described in detail with a specific embodiment. It should be understood that the following description is only an exemplary illustration and not a specific limitation to the utility model.

[0037] As Figures 1 - 4 shown, a concealed adjustable hydraulic hinge includes a housing 100 and an adjustment assembly.

[0038] Among them, a hydraulic shaft 110 is provided inside the outer shell 100. An axial hydraulic cavity 120 is provided inside the hydraulic shaft 110. A piston 130 is provided inside the hydraulic cavity 120. The piston 130 is provided with a hydraulic hole 140. One end of the hydraulic shaft 110 is provided with an inlet and outlet hole 150. The back surface of the outer shell 100 is provided with an adjusting screw hole 160 near one end of the inlet and outlet hole 150; the adjusting assembly includes a taper needle valve 170, a spiral gear 180, and an adjusting worm 190. One end of the taper needle valve 170 passes through the inlet and outlet hole 150 and is cooperatively installed with the hydraulic hole 140. The spiral gear 180 is connected to the other end of the taper needle valve 170. The adjusting worm 190 is arranged in the adjusting screw hole 160 and meshes with the spiral gear 180. When it is necessary to adjust the closing speed, the adjusting worm 190 drives the spiral gear 180 to rotate, driving the taper needle valve 170 to enter and exit the hydraulic hole 140, thereby changing the amount of oil passing through the hydraulic hole 140 of the piston 130, and further realizing the change of the closing speed. In this way, the forward and backward movement of the taper needle valve 170 is changed in the 90-degree direction of the hydraulic shaft 110, without the need to adjust at the end of the hydraulic shaft 110. Therefore, it is not necessary to disassemble to adjust the closing speed after installation.

[0039] Specifically, as shown in FIGS. 3 and Figure 4 As shown, the hydraulic shaft 110 is provided with a rear end cover 200. A sealing ring 210 is provided between the rear end cover 200 and the hydraulic shaft 110. The inlet and outlet hole 150 is provided in the rear end cover 200. The setting of the rear end cover 200 facilitates the machining of the hydraulic cavity 120 and the setting of the inlet and outlet hole 150, which is beneficial to the installation of the taper needle valve 170. Moreover, the rear end cover 200 is further provided with a mounting hole 220 communicating with the inlet and outlet hole 150. The mounting hole 220 is used for cooperative installation with the spiral gear 180. The setting of the mounting hole 220 on the rear end cover 200 is beneficial to the installation of the spiral gear 180. Further, the mounting hole 220 is a stepped hole. The spiral gear 180 includes a connecting portion 230 connected to the taper needle valve 170 and a gear portion 240 meshing with the adjusting worm 190. The mounting hole 220 being a stepped hole is beneficial to the two-part installation of the taper needle valve 170.

[0040] As Figure 4As shown, a sealing groove 250 is provided between the connecting portion 230 and the gear portion 240, and a sealing ring 210 is provided in the sealing groove 250. The provision of the sealing groove 250 and the sealing ring 210 serves to seal, preventing the hydraulic oil in the hydraulic chamber 120 from leaking through the inlet / outlet hole 150 and the mounting hole 220. Moreover, a docking hole 260 is provided at the front end of the connecting portion 230, and the docking hole 260 is fixedly connected to the taper needle valve 170. The provision of the docking hole 260 facilitates the connection of the taper needle valve 170 to the helical gear 180. Additionally, the front end of the helical gear 180 is movably riveted to the spherical head 270, the taper needle valve 170 is provided with a spherical head 270 mounted in the docking hole 260, and a buckle 280 for restricting the spherical head 270 is provided at the opening of the docking hole 260. In this way, the taper needle valve 170 can be deflected to a limited extent, which is beneficial for cooperation with the hydraulic hole 140 on the piston 130, and the provision of the spherical head 270 and the buckle 280 can prevent the taper needle valve 170 from separating from the helical gear 180.

[0041] It can be understood that, as Figure 4 shown, the adjusting worm 190 is provided with a top head 290, and the top head 290 is provided with an internal hexagonal hole 300. The provision of the top head 290 and the internal hexagonal hole 300 facilitates the rotational adjustment of the adjusting worm 190.

[0042] It should be noted that, as Figure 1 and Figure 2 shown, there are two housings 100, the hydraulic shaft 110 is connected to the blade 310, and the blades 310 of the two housings 100 are hinged. Such a setting allows the two housings 100 to be respectively and concealedly installed on the door frame and the door leaf.

[0043] In the description of this specification, the description with reference to terms such as "one embodiment, some embodiments, illustrative embodiments, examples, specific examples or some examples" etc. means that the specific features, structures, materials or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] The embodiments of the present utility model have been described in detail above with reference to the drawings, but the present utility model is not limited to the above embodiments. Various changes can be made without departing from the gist of the present utility model within the knowledge scope of those of ordinary skill in the art to which it pertains.

Claims

1. A hidden adjustable hydraulic hinge, characterized in that Comprising: A housing (100) with a hydraulic shaft (110) disposed therein. An axial hydraulic chamber (120) is provided in the hydraulic shaft (110). A piston (130) is provided in the hydraulic chamber (120). The piston (130) is provided with a hydraulic hole (140). One end of the hydraulic shaft (110) is provided with an inlet / outlet hole (150). An adjusting screw hole (160) is provided on the back of the housing (100) near one end of the inlet / outlet hole (150); An adjusting assembly, including a taper needle valve (170), a spiral gear (180), and an adjusting worm (190). One end of the taper needle valve (170) passes through the inlet / outlet hole (150) and is fitted and installed with the hydraulic hole (140). The spiral gear (180) is connected to the other end of the taper needle valve (170). The adjusting worm (190) is disposed in the adjusting screw hole (160) and meshes with the spiral gear (180).

2. The concealed adjustable hydraulic hinge according to claim 1, characterized in that, The hydraulic shaft (110) is provided with a rear end cover (200). A sealing ring (210) is provided between the rear end cover (200) and the hydraulic shaft (110). The inlet / outlet hole (150) is provided on the rear end cover (200).

3. The concealed adjustable hydraulic hinge according to claim 2, characterized in that, The rear end cover (200) is further provided with a mounting hole (220) communicating with the inlet / outlet hole (150). The mounting hole (220) is used for fitting and installing with the spiral gear (180).

4. The concealed adjustable hydraulic hinge according to claim 3, characterized in that, The mounting hole (220) is a stepped hole. The spiral gear (180) includes a connecting portion (230) connected to the taper needle valve (170) and a gear portion (240) meshing with the adjusting worm (190).

5. The hidden adjustable hydraulic hinge according to claim 4, characterized in that, A sealing groove (250) is provided between the connecting portion (230) and the gear portion (240). The sealing groove (250) is provided with a sealing ring (210).

6. The concealed adjustable hydraulic hinge according to claim 4, wherein, A docking hole (260) is provided at the front end of the connecting portion (230). The docking hole (260) is fixedly connected to the taper needle valve (170).

7. The hidden adjustable hydraulic hinge according to claim 6, characterized in that The taper needle valve (170) is provided with a ball head (270) installed in the docking hole (260). A snap (280) for restricting the ball head (270) is provided at the opening of the docking hole (260).

8. The concealed adjustable hydraulic hinge according to claim 1, wherein The adjusting worm (190) is provided with a top head (290). The top head (290) is provided with an internal hexagonal hole (300).

9. The concealed adjustable hydraulic hinge according to claim 1, characterized in that, There are two housings (100). The hydraulic shaft (110) is connected with vanes (310). The vanes (310) of the two housings (100) are hinged.

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