A reversible hydraulic buffer hinge

Abstract

This invention discloses a reversible hydraulic buffer hinge, comprising a first hinge body, a second hinge body, and a mandrel. The first and second hinge bodies are hinged together by the mandrel. The mandrel includes a connecting sleeve, a first sealing connector, a second sealing connector, a limiting sleeve, a spiral sleeve, a spiral shaft, and a pressure spring. An L-shaped limiting groove is symmetrically formed on the wall of the limiting sleeve. When the outer spiral teeth of the spiral shaft rotate in conjunction with the inner spiral teeth of the inner wall of the spiral sleeve, the spiral sleeve slides and moves up and down within the limiting sleeve via the limiting shaft. The pressure spring, acting as a pressure energy storage device, has one end in contact with the spiral shaft and the other end in contact with the limiting sleeve. It can push the spiral shaft back when opening and closing the hinge. The hinge produced by this invention is not only small in size but also simple in structure, reducing manufacturing difficulty and thus lowering production costs.

Description

Technical Field

[0001] This invention relates to the field of door hinge technology, and more particularly to a hydraulic buffer hinge that is universally applicable to both left and right sides. Background Technology

[0002] Hinges are components that connect two parts of an object and allow them to move. They are mainly used in doors and windows, and are formed by two hinge plates hinged to a pivot. Currently, hydraulic hinges suffer from complex internal structures, resulting in larger, less aesthetically pleasing hinges and higher production costs due to their complex manufacturing process. Therefore, improvements to the internal structure of hydraulic hinges are needed to achieve the same technical requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a universal hydraulic buffer hinge that can be used on both sides, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a universal hydraulic buffer hinge, comprising a first hinge body, a second hinge body, and a mandrel. The first hinge body and the second hinge body are hinged together by the mandrel. The mandrel includes a connecting sleeve, a first sealing connector, a second sealing connector, a limiting sleeve, a spiral sleeve, a spiral shaft, and a pressure spring. The two ends of the connecting sleeve are respectively movably fitted onto the first sealing connector and the second sealing connector. The limiting sleeve is connected to the first sealing connector, and its wall surface is symmetrically provided with a limiting groove. The limiting groove is L-shaped. The spiral sleeve is slidably inserted into the limiting sleeve. The wall surface of the spiral sleeve has a through-hole, and a limiting shaft is provided in the shaft hole. The two ends of the limiting shaft extend to the limiting groove. The surface of the spiral shaft is provided with external spiral teeth. The inner wall surface of the spiral sleeve is provided with internal spiral teeth that slide with the external spiral teeth. The pressure spring is fitted onto the outer wall of the spiral shaft, with one end of the pressure spring contacting the spiral shaft and the other end contacting the limiting sleeve.

[0005] Furthermore, the first hinge body includes a first hinge piece and a first sleeve, the first sleeve being disposed on one side of the first hinge piece; the second hinge body includes a second hinge piece and a second sleeve, the second sleeve being disposed on one side of the second hinge piece; the first sleeve and the second sleeve are coaxially sleeved on the mandrel.

[0006] Furthermore, the first sealing connector is embedded in the first sleeve and is fixedly connected to the first sleeve, and the spiral shaft is inserted into the second sleeve and is fixedly connected to the second sleeve.

[0007] Furthermore, the limiting groove includes a first travel portion arranged longitudinally and a second travel portion arranged transversely, with the interaction between the first travel portion and the second travel portion being curved.

[0008] Furthermore, the spiral shaft has a guide groove along its length, and a limit pin is slidably disposed in the guide groove. The two ends of the limit pin extend out of the guide groove and contact the pressure spring. An adjusting screw is inserted into the spiral shaft along its length, and the adjusting screw contacts the limit pin.

[0009] Furthermore, both ends of the second sealing connector are provided with sliding bearings, which are sleeved and fixed on the spiral shaft, and their outer walls are connected to the connecting sleeve.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: by symmetrically opening an L-shaped limiting groove on the wall of the limiting sleeve, when the outer helical teeth of the spiral shaft rotate in conjunction with the inner helical teeth of the inner hole wall of the spiral sleeve, the spiral sleeve slides and rises and falls within the limiting sleeve through the limiting shaft. The pressure spring, as a pressure energy storage, has one end in contact with the spiral shaft and the other end in contact with the limiting sleeve. When opening and closing the hinge, it can push the spiral shaft to retract. The hinge made by the present invention is not only smaller in size but also simple in structure, reducing the difficulty of production and processing, thereby reducing the production and processing cost. Attached Figure Description

[0011] Figure 1 It is a structural schematic diagram of the present invention.

[0012] Figure 2 This is a schematic diagram of the mandrel structure in this invention.

[0013] Figure 3 This is an exploded view of the mandrel in this invention.

[0014] Figure 4 This is a half-sectional schematic diagram of the mandrel in this invention.

[0015] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0016] Figure 6 This is a schematic diagram of the connection between the limiting sleeve and the spiral sleeve in this invention.

[0017] Figure 7 This is a schematic diagram of the connection between the spiral sleeve and the spiral shaft in this invention.

[0018] Figure 8 This is a schematic diagram of the connection between the spiral shaft and the adjusting screw in this invention.

[0019] Figure 9 This is a schematic diagram of the structure of the limiting sleeve in this invention.

[0020] Figure 10 This is a schematic diagram of the installation of the present invention.

[0021] In the figure: First hinge body 1, first hinge piece 11, first sleeve 12, second hinge body 2, second hinge piece 21, second sleeve 22, mandrel 3, connecting sleeve 31, first sealing connector 32, second sealing connector 33, limiting sleeve 34, limiting groove 340, first stroke part 3401, second stroke part 3402, spiral sleeve 35, inner spiral teeth 351, shaft hole 352, limiting shaft 353, spiral shaft 36, outer spiral teeth 361, guide groove 362, limiting pin 363, pressure spring 37, adjusting screw 38, sliding bearing 39. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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 invention 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 limiting this invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, the terms "first" and "second" are limited to descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly including one or more of the feature.

[0024] like Figures 1 to 9 As shown, the present invention provides a universal hydraulic buffer hinge, comprising a first hinge body 1, a second hinge body 2, and a mandrel 3. The first hinge body 1 and the second hinge body 2 are hinged together by the mandrel 3. The mandrel 3 includes a connecting sleeve 31, a first sealing connector 32, a second sealing connector 33, a limiting sleeve 34, a spiral sleeve 35, a spiral shaft 36, and a pressure spring 37. The two ends of the connecting sleeve 31 are respectively movably fitted onto the first sealing connector 32 and the second sealing connector 33. The limiting sleeve 34 is connected to the first sealing connector 32, and the wall surfaces of the limiting sleeve 34 are symmetrical. A limiting groove 340 is provided, which is L-shaped. A spiral sleeve 35 is slidably inserted into the limiting sleeve 34. A shaft hole 352 is provided through the wall of the spiral sleeve 35. A limiting shaft 353 is provided in the shaft hole 352. Both ends of the limiting shaft 353 extend to the limiting groove 340. The surface of the spiral shaft 36 is provided with external spiral teeth 361. The inner wall surface of the spiral sleeve 35 is provided with internal spiral teeth 351 that slide with the external spiral teeth 361. A pressure spring 37 is sleeved on the outer wall of the spiral shaft 36, with one end of the pressure spring 37 in contact with the spiral shaft 36 and the other end in contact with the limiting sleeve 34.

[0025] In this embodiment, the first hinge body 1 includes a first hinge piece 11 and a first sleeve 12. The first sleeve 12 is disposed on one side of the first hinge piece 11. The second hinge body 2 includes a second hinge piece 21 and a second sleeve 22. The second sleeve 22 is disposed on one side of the second hinge piece 21. The first sleeve 12 and the second sleeve 22 are coaxially sleeved on the mandrel 3.

[0026] In this embodiment, the first sealing connector 32 is embedded in the first sleeve 12 and is fixedly connected to the first sleeve 12. The spiral shaft 36 is inserted into the second sleeve 22 and is fixedly connected to the second sleeve 22.

[0027] In this embodiment, the limiting groove 340 includes a first travel portion 3401 arranged in the longitudinal direction and a second travel portion 3402 arranged in the transverse direction, and the interaction between the first travel portion 3401 and the second travel portion 3402 is curved.

[0028] In this embodiment, the spiral shaft 36 has a guide groove 362 along its length, and a limit pin 363 is slidably disposed in the guide groove 362. The two ends of the limit pin 363 extend out of the guide groove 362 and contact the pressure spring 37. An adjusting screw 38 is inserted into the spiral shaft 36 along its length, and the adjusting screw 38 contacts the limit pin 363.

[0029] In this embodiment, both ends of the second sealing connector 33 are provided with sliding bearings 39, which are sleeved and fixed on the spiral shaft 36, and their outer walls are connected to the connecting sleeve 31.

[0030] The main working principle of this invention is as follows: By symmetrically opening an L-shaped limiting groove 340 on the wall of the limiting sleeve 34, when the outer helical teeth 361 of the spiral shaft 36 rotates in conjunction with the inner helical teeth 351 of the inner hole wall of the spiral sleeve 35, the spiral sleeve 35 slides and rises and falls within the limiting sleeve 34 through the limiting shaft 353. The pressure spring 37, as a pressure energy storage device, has one end in contact with the spiral shaft 36 and the other end in contact with the limiting sleeve 34. When opening and closing the hinge, it can push the spiral shaft 36 to retract. The hinge made by this invention is not only small in size but also simple in structure, reducing the difficulty of production and processing, thereby reducing the production and processing cost.

[0031] Reference Figure 10 The present invention provides a one-way hinge. However, since the first hinge piece 11 of the first hinge body 1 and the second hinge piece 21 of the second hinge body 2 are the same, the first hinge piece 11 can be fixedly installed on the door body or door frame, and the second hinge piece 21 can be fixedly installed on the door body or door frame, so that the two hinges can be installed and used regardless of left or right, thereby speeding up the installation efficiency.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reversible hydraulic buffer hinge, comprising a first hinge body (1), a second hinge body (2), and a spindle (3), wherein the first hinge body (1) and the second hinge body (2) are hinged together by the spindle (3), characterized in that: The mandrel (3) includes a connecting sleeve (31), a first sealing connector (32), a second sealing connector (33), a limiting sleeve (34), a spiral sleeve (35), a spiral shaft (36), and a pressure spring (37). The two ends of the connecting sleeve (31) are respectively movably fitted onto the first sealing connector (32) and the second sealing connector (33). The limiting sleeve (34) is connected to the first sealing connector (32), and the wall surface of the limiting sleeve (34) is symmetrically provided with limiting grooves (340). The limiting grooves (340) are L-shaped. The spiral sleeve (35) is slidably inserted into the limiting sleeve (34). The wall of the spiral sleeve (35) is perforated by a shaft hole (352), and a limiting shaft (353) is provided in the shaft hole (352). The two ends of the limiting shaft (353) extend to the limiting groove (340). The surface of the spiral shaft (36) is provided with external spiral teeth (361). The inner wall surface of the spiral sleeve (35) is provided with internal spiral teeth (351) that slide with the external spiral teeth (361). The pressure spring (37) is sleeved on the outer wall of the spiral shaft (36), and one end of the pressure spring (37) is in contact with the spiral shaft (36), and the other end is in contact with the limiting sleeve (34).

2. The universal hydraulic buffer hinge according to claim 1, characterized in that: The first hinge body (1) includes a first hinge piece (11) and a first sleeve (12). The first sleeve (12) is disposed on one side of the first hinge piece (11). The second hinge body (2) includes a second hinge piece (21) and a second sleeve (22). The second sleeve (22) is disposed on one side of the second hinge piece (21). The first sleeve (12) and the second sleeve (22) are coaxially sleeved on the mandrel (3).

3. A universal hydraulic buffer hinge according to claim 2, characterized in that: The first sealing connector (32) is embedded in the first sleeve (12) and is fixedly connected to the first sleeve (12). The spiral shaft (36) is inserted into the second sleeve (22) and is fixedly connected to the second sleeve (22).

4. A universal hydraulic buffer hinge according to claim 1, characterized in that: The limiting groove (340) includes a first travel section (3401) arranged in the longitudinal direction and a second travel section (3402) arranged in the transverse direction, and the interaction between the first travel section (3401) and the second travel section (3402) is curved.

5. A universal hydraulic buffer hinge according to claim 1, characterized in that: The spiral shaft (36) has a guide groove (362) along its length. A limit pin (363) is slidably disposed in the guide groove (362). Both ends of the limit pin (363) extend out of the guide groove (362) and contact the pressure spring (37). An adjusting screw (38) is inserted into the spiral shaft (36) along its length and contacts the limit pin (363).

6. A universal hydraulic buffer hinge according to claim 1, characterized in that: Both ends of the second sealing connector (33) are provided with sliding bearings (39), which are sleeved and fixed on the spiral shaft (36) and whose outer walls are connected to the connecting sleeve (31).

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