Opening and closing self-locking type hinge mechanism

Abstract

The utility model relates to the technical field of hinges, in particular to an opening and closing self-locking type hinge mechanism. Comprising a fixed frame, a movable frame, a first axis, a second axis, a first connecting rod, a second connecting rod, a first cam and a second cam, wherein the movable frame is movably arranged on the fixed frame; the first axis and the second axis are arranged on the fixed frame; the first connecting rod is arranged on the first axis; one end of the first connecting rod is connected with the movable frame, the other end of the first connecting rod is provided with a first groove position used for containing the first cam, one end of the second connecting rod is connected with the movable frame, and the other end of the second connecting rod is provided with a second groove position used for containing the second cam. The self-locking cover is compact in structure and reasonable in design, has self-locking performance after being closed, plays a role in protecting the machine body by the cover body, and prolongs the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to an opening and closing self-locking hinge mechanism. Background Art

[0002] The common structure of a laptop computer includes a body and a cover rotatably connected to the body. In order to protect the screen structure set on the cover from damage, the cover is generally opened or closed relative to the body through a hinge mechanism. However, since the existing hinge mechanism lacks the necessary self-locking angle structure, it is difficult to fix the position of the cover well when people close the cover after using the body, making it easy for the cover to loosen and accidentally open the cover, making it difficult for the cover to protect the body, affecting the service life. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies of the existing technology and provide an opening and closing self-locking hinge mechanism with a compact structure and reasonable design, which has a self-locking performance after closing, plays a protective role of the cover body on the machine body, and improves the service life.

[0004] To achieve the above-mentioned purpose, the utility model provides an opening and closing self-locking hinge mechanism, including a fixed frame, a movable frame movably arranged on the fixed frame, a first axis and a second axis arranged on the fixed frame, a first connecting rod arranged on the first axis, a second connecting rod arranged on the second axis, a first cam sleeved on the outside of the first axis, and a second cam sleeved on the outside of the second axis, one end of the first connecting rod is connected to the movable frame, and the other end of the first connecting rod is provided with a first slot for accommodating the first cam, one end of the second connecting rod is connected to the movable frame, and the other end of the second connecting rod is provided with a second slot for accommodating the second cam.

[0005] Preferably, the fixing frame is detachably provided with a press-fit seat, a connecting screw is provided at the connection between the press-fit seat and the fixing frame, a recess is provided on one side of the movable frame close to the press-fit seat, the fixing frame is provided with a concave cavity, and the press-fit seat is provided with a press-fit block, the outer wall of the recess rotates to contact the inner wall of the concave cavity, and the inner wall of the recess rotates to contact the outer wall of the press-fit block.

[0006] Preferably, a limit block is provided on the outer wall of the recess, a slide groove is provided in the recess, and the limit block is rotatably accommodated in the slide groove so that the limit block stops and contacts the inner wall of the fixing frame.

[0007] Preferably, a first pin is provided at the connection between the first connecting rod and the movable frame, and a second pin is provided at the connection between the second connecting rod and the movable frame.

[0008] Preferably, a plurality of first spring clips and a first adjusting nut for adjusting the expansion and contraction amount of the plurality of first spring clips are provided at one end of the first axis away from the fixing frame, and a plurality of second spring clips and a second adjusting nut for adjusting the expansion and contraction amount of the plurality of second spring clips are provided at one end of the second axis away from the fixing frame.

[0009] The beneficial effects of the utility model are as follows: the structure is compact and the design is reasonable, and the cover has a self-locking performance after closing, so that the cover body plays a protective role on the machine body and the service life is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the present utility model.

[0011] Figure 2 This is a schematic diagram of the exploded structure of the present invention.

[0012] Figure 3 This is a schematic structural diagram of the press-fit seat of the present utility model.

[0013] Reference numerals include:

[0014] 1——fixed frame 11——concave cavity 12——slide groove

[0015] 2——movable frame 21——recess 22——limiting block

[0016] 3 - first axis 31 - first connecting rod 32 - first cam

[0017] 33 - first slot 34 - first pin 35 - first spring

[0018] 36——First adjusting nut

[0019] 4 - Second axis 41 - Second connecting rod 42 - Second cam

[0020] 43 - Second slot 44 - Second pin 45 - Second spring

[0021] 46——Second adjusting nut

[0022] 5——Pressure fitting seat 51——Connecting screw 52——Pressure fitting block. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 3As shown, the utility model is an opening and closing self-locking hinge mechanism, including a fixed frame 1, a movable frame 2 movably arranged on the fixed frame 1, a first axis 3 and a second axis 4 arranged on the fixed frame 1, a first connecting rod 31 arranged on the first axis 3, a second connecting rod 41 arranged on the second axis 4, a first cam 32 sleeved on the outside of the first axis 3, and a second cam 42 sleeved on the outside of the second axis 4, one end of the first connecting rod 31 is connected to the movable frame 2, and the other end of the first connecting rod 31 is provided with a first slot 33 for accommodating the first cam 32, one end of the second connecting rod 41 is connected to the movable frame 2, and the other end of the second connecting rod 41 is provided with a second slot 43 for accommodating the second cam 42.

[0025] During use, the fixed frame 1 is connected to the external machine body, and the movable frame 2 is connected to the external cover body. The first axis 3 and the second axis 4 are respectively arranged at the two ends of the fixed frame 1. The two ends of the movable frame 2 are respectively rotatably sleeved on the outside of the first axis 3 and the second axis 4 through the first connecting rod 31 and the second connecting rod 41, so that the first connecting rod 31 is engaged with the first cam 32 through the first groove 33, and the second connecting rod 41 is engaged with the second cam 42 through the second groove 43. After the external cover body and the external machine body are closed, they play a locking and fixing role to prevent accidental loosening and separation. The utility model has a compact structure and a reasonable design, has a self-locking performance after closing, plays a protective role of the cover body on the machine body, and improves the service life.

[0026] The fixed frame 1 of this embodiment is detachably provided with a press-fit seat 5, and a connecting screw 51 is provided at the connection between the press-fit seat 5 and the fixed frame 1. A recess 21 is provided on the side of the movable frame 2 close to the press-fit seat 5, the fixed frame 1 is provided with a concave cavity 11, and the press-fit seat 5 is provided with a press-fit block 52. The outer wall of the recess 21 rotates to abut against the inner wall of the concave cavity 11, and the inner wall of the recess 21 rotates to abut against the outer wall of the press-fit block 52. Specifically, the connecting screw 51 passes through the press-fit seat 5 and is connected and fixed to the fixed frame 1. The movable frame 2 is installed between the concave cavity 11 and the press-fit block 52 through the recess 21, so that the outer wall of the recess 21 rotates to abut against the inner wall of the concave cavity 11, and the inner wall of the recess 21 rotates to abut against the outer wall of the press-fit block 52. The contact area is large, thereby realizing smooth rotation of the movable frame 2 around the fixed frame 1 and high rotation stability.

[0027] In this embodiment, a limit block 22 is provided on the outer wall of the recess 21. The recess 11 is provided with a slide groove 12. The limit block 22 is rotatably accommodated in the slide groove 12, so that the limit block 22 stops and abuts against the inner wall of the fixed frame 1. Specifically, when the movable frame 2 is rotatably arranged between the recess 11 and the pressing block 52 via the recess 21, the recess 21 drives the limit block 22 to rotate and be accommodated in the slide groove 12, so that the limit block 22 stops and abuts against the inner wall of the fixed frame 1, thereby limiting the maximum distance that the movable frame 2 can open relative to the fixed frame 1, avoiding structural damage caused by excessive opening, and achieving a good limiting effect.

[0028] In this embodiment, a first pin 34 is provided at the connection between the first connecting rod 31 and the movable frame 2, and a second pin 44 is provided at the connection between the second connecting rod 41 and the movable frame 2. Specifically, the first connecting rod 31 is connected to one end of the movable frame 2 via the first pin 34, and the second connecting rod 41 is connected to the other end of the movable frame 2 via the second pin 44, thereby achieving a rotational connection between the movable frame 2 and the fixed frame 1, resulting in a compact structure and a reasonable design.

[0029] In this embodiment, the end of the first axis 3 away from the fixing frame 1 is provided with a plurality of first spring clips 35 and a first adjustment nut 36 for adjusting the extension and contraction of the plurality of first spring clips 35. The end of the second axis 4 away from the fixing frame 1 is provided with a plurality of second spring clips 45 and a second adjustment nut 46 for adjusting the extension and contraction of the plurality of second spring clips 45. Specifically, the plurality of first spring clips 35 and the plurality of second spring clips 45 are respectively sleeved on the outside of the first axis 3 and the second axis 4. By controlling the magnitude of the locking force of the first adjustment nut 36, the magnitude of the extension and contraction of the plurality of first spring clips 35 is controlled, thereby achieving control and adjustment of different torques on the first axis 3. By controlling the magnitude of the locking force of the second adjustment nut 46, the magnitude of the extension and contraction of the plurality of second spring clips 45 is controlled, thereby achieving control and adjustment of different torques on the second axis 4.

[0030] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A self-locking hinge mechanism, characterized in that: It includes a fixed frame, a movable frame movably arranged on the fixed frame, a first axis and a second axis arranged on the fixed frame, a first connecting rod arranged on the first axis, a second connecting rod arranged on the second axis, a first cam sleeved on the outside of the first axis, and a second cam sleeved on the outside of the second axis, one end of the first connecting rod is connected to the movable frame, and the other end of the first connecting rod is provided with a first slot for accommodating the first cam, one end of the second connecting rod is connected to the movable frame, and the other end of the second connecting rod is provided with a second slot for accommodating the second cam.

2. The self-locking hinge mechanism according to claim 1, characterized in that: The fixing frame is detachably provided with a press-fitting seat, a connecting screw is provided at the connection between the press-fitting seat and the fixing frame, a recess is provided on one side of the movable frame close to the press-fitting seat, the fixing frame is provided with a concave cavity, and the press-fitting seat is provided with a press-fitting block, the outer wall of the recess rotates to contact the inner wall of the concave cavity, and the inner wall of the recess rotates to contact the outer wall of the press-fitting block.

3. The self-locking hinge mechanism according to claim 2, characterized in that: The outer wall of the concave position is provided with a limit block, the concave cavity is provided with a slide groove, and the limit block is rotatably accommodated in the slide groove so that the limit block stops and abuts against the inner wall of the fixing frame.

4. The self-locking hinge mechanism according to claim 1, characterized in that: A first pin is provided at a connection point between the first connecting rod and the movable frame, and a second pin is provided at a connection point between the second connecting rod and the movable frame.

5. The self-locking hinge mechanism according to claim 1, characterized in that: A plurality of first spring pieces and a first adjusting nut for adjusting the expansion and contraction of the plurality of first spring pieces are provided at one end of the first axis away from the fixing frame, and a plurality of second spring pieces and a second adjusting nut for adjusting the expansion and contraction of the plurality of second spring pieces are provided at one end of the second axis away from the fixing frame.

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