Lifting hinge with buffering function

Abstract

The lifting hinge with the buffering function comprises a first hinge body and a second hinge body, a lower sleeve is arranged at the lower end of the side edge of the first hinge body, an upper sleeve is arranged at the upper end of the side edge of the second hinge body, and the lower sleeve and the upper sleeve are rotationally connected through a lifting mechanism. The lifting mechanism comprises a sleeve, a spiral shaft and a damper, the lower end of the sleeve is connected with the lower sleeve, the upper end of the spiral shaft is connected with the upper sleeve, the spiral shaft is connected with the upper end of the sleeve through a spiral structure, so that the spiral shaft ascends and descends in the axial direction when the hinge rotates, and the damper is arranged in the sleeve. The damper acts on the spiral shaft, so that the damper provides damping acting force for the spiral shaft in the descending process of the spiral shaft, the first hinge fixed to the door body descends and resets in the buffering state, and damage caused by collision between the door body and the door frame is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a lifting hinge with a buffer function. Background Art

[0002] A lifting hinge is a hinge that pushes the door body's own weight to achieve automatic return;

[0003] For example, Chinese patent document No. CN202322020790.7 disclosed a lifting hinge on April 12, 2024, wherein the hinge assembly comprises an upper lifting core and an upper hinge sleeve, wherein the upper lifting core is arranged in the upper hinge sleeve, and the lower hinge assembly comprises a lower lifting core and a lower hinge sleeve, wherein one end of the lower lifting core is arranged in the lower hinge sleeve, and the inclined surface of the upper lifting core moves up and down along the inclined surface of the lower lifting core, so that the door leaf can be automatically closed by its own gravity after being opened;

[0004] However, there is a disadvantage of the current lifting hinges. When closing the door by its own gravity, excessive force may be applied, causing a loud collision between the door and the door frame or a huge impact between the door and the door frame, thereby reducing the service life of the door. Utility Model Content

[0005] The purpose of the utility model is to provide a lifting hinge with a buffering function, which has solved 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 lifting hinge with a buffering function, comprising a first hinge and a second hinge, a lower sleeve is provided at the lower end of the side of the first hinge, an upper sleeve is provided at the upper end of the side of the second hinge, the lower sleeve and the upper sleeve are rotatably connected through a lifting mechanism, wherein the lifting mechanism comprises a sleeve, a spiral shaft and a damper, the lower end of the sleeve is connected to the lower sleeve, the upper end of the spiral shaft is connected to the upper sleeve, the spiral shaft is connected to the upper end of the sleeve through a spiral structure, so that the spiral shaft is lifted and lowered axially when the hinge rotates, the damper is arranged in the sleeve, and the damper acts on the spiral shaft, so that the damper provides a damping force to the spiral shaft during its descent.

[0007] Furthermore, the spiral structure includes external spiral teeth on the spiral shaft and spiral grooves in the sleeve, so that the spiral shaft can rise and fall in the axial direction when rotating in the sleeve.

[0008] Furthermore, a locking piece is also included, and a receiving cavity is provided on the inner side of the lower sleeve, and the sleeve is inserted into the receiving cavity and fixed by the locking piece.

[0009] Furthermore, the locking member includes a threaded portion and a pressing portion, the threaded portion is threadedly connected to the bottom of the sleeve, a limiting ring is arranged in the accommodating cavity, and the pressing portion abuts against the limiting ring.

[0010] Furthermore, a transmission sleeve is sleeved on the sleeve, and the transmission sleeve is connected to the sleeve through an inner spline pattern. A limit block is provided on the outer wall of the transmission sleeve, and a limit groove is axially provided on the wall of the accommodating cavity, and the limit block is adapted to the limit groove.

[0011] Furthermore, a damping adjustment member is arranged in the locking member, and one end of the damper away from the spiral shaft acts on the damping adjustment member, and the damping adjustment member is used to adjust the damping force provided by the damper for the lifting hinge.

[0012] Furthermore, the damping adjustment member is an adjustment top screw, which is screwed to the center of the locking member, and one end of the damping adjustment member extends outside the locking member to abut against the damper, and a hexagonal groove is provided at one end of the damping adjustment member away from the damper.

[0013] Furthermore, the upper end of the spiral shaft is an external hexagonal structure, the upper sleeve is provided with an internal hexagonal groove adapted to the upper end of the spiral shaft, the top of the upper sleeve is provided with an upper cover, and the upper cover is fixedly connected to the spiral shaft by fixing screws.

[0014] Compared with the prior art, the main beneficial effect of the utility model is: by arranging a damper in the sleeve and making the damper act on the spiral shaft, when the door body is released and pushed, the second hinge is lowered and reset on the first hinge through the cooperation of the spiral structure, and when the spiral shaft is descending, the damper provides a damping force for the spiral shaft, so that the first hinge fixed on the door body is lowered and reset in a buffered state, preventing the door body and the door frame from colliding and being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a subjective three-dimensional schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the installation state of the utility model.

[0017] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0018] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0019] In the figure: a first hinge 10, a lower sleeve 101, an accommodating chamber 1011, a limiting ring 1012, a limiting groove 1013, a second hinge 20, an upper sleeve 201, a sleeve 30, a spiral groove 301, a spiral shaft 40, an outer spiral tooth 401, a damper 50, a locking member 60, a threaded portion 601, a pressing portion 602, a transmission sleeve 70, a limiting block 701, a damping adjustment member 80, and an upper cover 90. DETAILED DESCRIPTION

[0020] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0021] It should be understood that the various steps described in the method implementation of the present utility model can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present utility model is not limited in this respect.

[0022] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0023] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0024] like Figures 1 to 4 A lifting hinge with a buffering function shown in the figure comprises a first hinge 10 and a second hinge 20, both of which are double-layer block structures, and the first hinge 10 is fixed to the door frame and the second hinge 20 is fixed to the door body by bolts, wherein a lower sleeve 101 is provided at the lower end of the side of the first hinge 10, and an upper sleeve 201 is provided at the upper end of the side of the second hinge 20, and both the lower sleeve 101 and the upper sleeve 201 are tubular structures, and the two are rotatably connected by a built-in lifting mechanism; to be precise, the lifting movement is performed simultaneously when rotating;

[0025] The lifting mechanism includes a sleeve 30, a screw shaft 40 and a damper 50. The lower end of the sleeve 30 is connected to the lower sleeve 101, and the upper end of the screw shaft 40 is connected to the upper sleeve 201. The screw shaft 40 is connected to the upper end of the sleeve 30 through a spiral structure, so that the screw shaft 40 can be lifted and lowered axially when the hinge rotates. The damper 50 is arranged in the sleeve 30, and the damper 50 acts on the screw shaft 40, so that the damper 50 provides a damping force for the screw shaft 40 during the descent process. It should be understood that when the door body is released and pushed, the second hinge 20 is lowered and reset on the first hinge 10 through the cooperation of the spiral structure, and when the screw shaft 40 is descending, the damper 50 provides a damping force for the screw shaft 40, so that the first hinge 10 fixed on the door body is lowered and reset in a buffered state to prevent the door body and the door frame from colliding and being damaged.

[0026] In this embodiment, the spiral structure includes external spiral teeth 401 on the spiral shaft 40 and a spiral groove 301 in the sleeve 30, so that the spiral shaft 40 can rise and fall axially when rotating in the sleeve 30; to be precise, the external spiral teeth 401 are multi-stage design, which is used to bear a heavier door body. In addition, the spiral direction of the external spiral teeth 401 and the spiral groove 301 is determined according to the opening and closing direction of the door body, so that the spiral shaft 40 can move downward in the sleeve 30 when the door body is closed.

[0027] In this embodiment, a locking member 60 is also included. A receiving chamber 1011 is provided on the inner side of the lower sleeve 101. The sleeve 30 is inserted into the receiving chamber 1011 and fixed by the locking member 60. To be precise, the locking member 60 includes a threaded portion 601 and a pressing portion 602. The threaded portion 601 is threadedly connected to the bottom of the sleeve 30. A limiting ring 1012 is provided in the receiving chamber 1011, and the pressing portion 602 abuts against the limiting ring 1012. During installation, the damper 50 is first placed in the sleeve 30, and then the sleeve 30 is inserted into the receiving chamber 1011. Then, the sleeve 30 can be fixed to the inner side of the lower sleeve 101 by tightening the locking member 60, which is beneficial to production work.

[0028] In this embodiment, a transmission sleeve 70 is sleeved on the sleeve 30, and the transmission sleeve 70 is connected to the sleeve 30 through the inner spline pattern. A limit block 701 is provided on the outer wall of the transmission sleeve 70, and a limit groove 1013 is axially provided on the wall of the accommodating cavity 1011. The limit block 701 is adapted to the limit groove 1013. Through this structure, the connection strength between the sleeve 30 and the lower sleeve 101 can be strengthened to ensure that the two can move synchronously. When the first hinge 10 drives the screw shaft 40 to rotate or the screw shaft 40 is spirally lifted and lowered in the sleeve 30, the position of the sleeve 30 will not change.

[0029] In this embodiment, a damping adjustment member 80 is provided in the locking member 60, and the end of the damper 50 away from the spiral shaft 40 acts on the damping adjustment member 80, and the damping adjustment member 80 is used to adjust the damping force provided by the damper 50 for the lifting hinge; to be precise, the damping adjustment member 80 is an adjusting top screw, and the damping adjustment member 80 is screwed to the center of the locking member 60, and one end extends to the outside of the locking member 60 and abuts against the damper 50, and the end of the damping adjustment member 80 away from the damper 50 is provided with a hexagonal groove; after the lifting hinge is installed, the position of the damper 50 in the sleeve 30 can be adjusted by twisting the damping adjustment member 80, which can not only adapt different damping forces according to the weight of the door body, but also can be adjusted according to the closing speed of the door body.

[0030] In this embodiment, the upper end of the spiral shaft 40 is an external hexagonal structure, and an internal hexagonal groove that matches the upper end of the spiral shaft 40 is provided in the upper sleeve 201. An upper cover is provided on the top of the upper sleeve 201, and the upper cover is fixedly connected to the spiral shaft 40 by fixing screws. This structure is easy to connect and is more conducive to production work.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting hinge with a buffering function, comprising a first hinge (10) and a second hinge (20), wherein a lower sleeve (101) is disposed at a lower end of a side edge of the first hinge (10), and an upper sleeve (201) is disposed at an upper end of a side edge of the second hinge (20), and the lower sleeve (101) and the upper sleeve (201) are rotatably connected via a lifting mechanism, characterized in that: The lifting mechanism comprises a sleeve (30), a spiral shaft (40) and a damper (50); the lower end of the sleeve (30) is connected to a lower sleeve (101); the upper end of the spiral shaft (40) is connected to an upper sleeve (201); the spiral shaft (40) is connected to the upper end of the sleeve (30) via a spiral structure, so that the spiral shaft (40) is axially lifted and lowered when the hinge rotates; the damper (50) is arranged in the sleeve (30), and the damper (50) acts on the spiral shaft (40), so that the damper (50) provides a damping force to the spiral shaft (40) during its descent.

2. The lifting hinge with buffer function according to claim 1, characterized in that: The spiral structure comprises external spiral teeth (401) on the spiral shaft (40) and spiral grooves (301) in the sleeve (30), so that the spiral shaft (40) can be lifted and lowered along the axial direction when rotating in the sleeve (30).

3. The lifting hinge with buffer function according to claim 1, characterized in that: It also includes a locking piece (60), and a receiving cavity (1011) is provided on the inner side of the lower sleeve (101), and the sleeve (30) is inserted into the receiving cavity (1011) and fixed by the locking piece (60).

4. The lifting hinge with buffer function according to claim 3, characterized in that: The locking member (60) comprises a threaded portion (601) and a pressing portion (602); the threaded portion (601) is threadedly connected to the bottom of the sleeve (30); a limiting ring (1012) is arranged in the accommodating cavity (1011); and the pressing portion (602) abuts against the limiting ring (1012).

5. The lifting hinge with buffer function according to claim 4, characterized in that: A transmission sleeve (70) is sleeved on the sleeve (30), and the transmission sleeve (70) is connected to the sleeve (30) via an inner spline pattern. A limit block (701) is provided on the outer wall surface of the transmission sleeve (70), and a limit groove (1013) is provided on the wall surface of the accommodating cavity (1011) along the axial direction, and the limit block (701) is adapted to the limit groove (1013).

6. The lifting hinge with buffer function according to claim 4, characterized in that: A damping adjustment member (80) is arranged inside the locking member (60), and one end of the damper (50) away from the spiral shaft (40) exerts force on the damping adjustment member (80), and the damping adjustment member (80) is used to adjust the damping force provided by the damper (50) for the lifting hinge.

7. The lifting hinge with buffer function according to claim 6, characterized in that: The damping adjustment member (80) is an adjustment top screw, which is screwed to the center of the locking member (60) and has one end extending outside the locking member (60) to abut against the damper (50), and a hexagonal groove is provided at one end of the damping adjustment member (80) away from the damper (50).

8. The lifting hinge with buffer function according to claim 1, characterized in that: The upper end of the spiral shaft (40) is an external hexagonal structure, and the upper sleeve (201) is provided with an internal hexagonal groove adapted to the upper end of the spiral shaft (40). The top of the upper sleeve (201) is provided with an upper cover (90), and the upper cover (90) is fixedly connected to the spiral shaft (40) by fixing screws.

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