Self-closing buffer device

Abstract

The self-closing buffer device comprises a shell fixed on a first mounting body, the first mounting body is hinged with a second mounting body, a first magnet is fixed on the second mounting body, a buffer structure is arranged on the shell, the buffer structure is partially provided with a second magnet, the shell is correspondingly provided with a third magnet on the other part of the buffer structure, the first magnet and the third magnet are respectively attracted to the second magnet, the second mounting body moves to the first mounting body, the first magnet approaches the second magnet, the magnetic field is strengthened, and the second magnet reacts with the third magnet, the first magnet and the second magnet drive the second mounting body to move to the third magnet and generate a closing force of the second mounting body closing on the first mounting body, so as to realize automatic closing. The self-closing buffer device can realize automatic closing through the above arrangement.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of buffer devices, in particular a self-closing buffer device. BACKGROUND

[0002] The existing buffer device can be applied to door body closure, and the door body closure contacts the buffer device. However, the existing door body closure needs to be manually closed throughout the process, and cannot achieve automatic closing function. Therefore, further improvement is needed. SUMMARY

[0003] The present application aims to provide a self-closing buffer device that can achieve automatic closing, to overcome the shortcomings of the prior art.

[0004] A self-closing buffer device designed for this purpose includes a housing fixed to a first mounting body, the first mounting body is hingedly connected to a second mounting body, and a first magnet is fixed to the second mounting body. The housing is provided with a buffer structure, and the buffer structure is partially provided with a second magnet. The housing is provided with a third magnet corresponding to the other part of the buffer structure. The first magnet and the third magnet are respectively attracted to the second magnet. When the second mounting body moves towards the first mounting body, the first magnet approaches the second magnet, the magnetic field is strengthened, and the second magnet reacts with the third magnet. The first magnet and the second magnet drive the second mounting body to move towards the third magnet and generate a closing force for closing the second mounting body on the first mounting body, to achieve automatic closing.

[0005] When the second mounting body closes and presses the buffer structure towards the first mounting body, the buffer structure moves in the housing. The housing is provided with a guide portion corresponding to the movement position of the buffer structure. The buffer structure moves along the guide portion, and the buffer structure moves along the set trajectory.

[0006] The buffer structure is inserted into the housing and penetrates the guide portion during installation. A protrusion is provided between the guide portion and the buffer structure, which can reduce the frictional resistance between the guide portion and the buffer structure.

[0007] The buffer structure is provided with a limiting portion corresponding to the guide portion. The outer diameter of the limiting portion is greater than the outer diameter of the guide portion, to prevent the buffer structure from being pulled out of the housing.

[0008] The guide portion includes a guide groove provided on a part of the housing. The inner diameter of the guide groove is smaller than the inner diameter of another part of the housing, so that the inner cavity of the housing has a stepped structure. The limiting portion of the buffer structure can abut against the step of the inner cavity of the housing, to prevent the buffer structure from being pulled out of the housing.

[0009] The buffer structure includes a compression spring and a push rod. The limiting portion includes a limiting ring provided on the push rod. One end of the compression spring abuts against the limiting ring, and the other end of the compression spring abuts against the third magnet. Alternatively, the buffer structure includes a damper cylinder and a piston rod telescopically arranged in the damper cylinder.

[0010] The push rod is provided with a first fixing groove for mounting the second magnet.

[0011] The self-closing buffer device further comprises a plug cover assembled with the shell, the plug cover being provided with a second fixing groove for mounting the third magnet, and the plug cover encapsulating the third magnet and the buffer structure part on the shell.

[0012] The plug cover is inserted into the shell, and a clamping structure and a fixing structure are arranged between the plug cover and the shell to fix the plug cover on the shell.

[0013] The clamping structure comprises a positioning protrusion arranged on the plug cover and a notch arranged on the shell, and the positioning protrusion is clamped in the notch during installation; the fixing structure comprises a first fixing hole arranged on the plug cover and a second fixing hole arranged on the shell, and the first fixing hole and the second fixing hole are connected by a fastener during installation.

[0014] The self-closing buffer device has the following advantages:

[0015] The buffer structure part is provided with the second magnet, the shell is provided with the third magnet corresponding to the buffer structure part, the first magnet and the third magnet are respectively attracted to the second magnet, the second installation body moves towards the first installation body, the first magnet approaches the second magnet, the magnetic field is strengthened, and the second magnet and the third magnet react, the first magnet and the second magnet drive the second installation body to move towards the third magnet and generate a closing force for closing the second installation body on the first installation body, so that the self-closing is realized.

[0016] The shell is provided with a guide portion corresponding to the movement position of the buffer structure, and the buffer structure moves along the guide portion, so that the buffer structure moves along a set track.

[0017] A protrusion is arranged between the guide portion and the buffer structure, and the protrusion can reduce the frictional resistance between the guide portion and the buffer structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the linking structure of the first installation body and the second installation body according to an embodiment of the self-closing buffer device.

[0019] Figure 2 It is a schematic view of the linking structure of the first installation body and the second installation body according to an embodiment of the self-closing buffer device. Figure 1 It is an enlarged view of position A in the middle.

[0020] Figure 3 It is a schematic view of the assembly and disassembly structure of the self-closing buffer device according to an embodiment of the self-closing buffer device.

[0021] Figure 4 It is a schematic view of the shell structure according to an embodiment of the self-closing buffer device.

[0022] Figure 5 It is a schematic view of the plug cover structure according to an embodiment of the self-closing buffer device. DETAILED DESCRIPTION

[0023] The application will be further described in connection with the accompanying drawings and embodiments.

[0024] Referring to Figures 1-5 A self-closing buffer device comprises a shell 2 fixed on a first mounting body 1, the first mounting body 1 is hinged with a second mounting body 3, and further comprises a first magnet 4 fixed on the second mounting body 3, the shell 2 is provided with a buffer structure 5, the buffer structure 5 is partially provided with a second magnet 6, the shell 2 is further provided with a third magnet 7 corresponding to the buffer structure 5, the first magnet 4 and the third magnet 7 are respectively attracted to the second magnet 6, the second mounting body 3 moves towards the first mounting body 1, the first magnet 4 approaches the second magnet 6, the magnetic field is strengthened, and the second magnet 6 reacts with the third magnet 7, the first magnet 4 and the second magnet 6 drive the second mounting body 3 to move towards the third magnet 7 and generate a closing force of the second mounting body 3 closing on the first mounting body 1, so as to realize automatic closing.

[0025] Referring to Figure 1 In the embodiment, the first mounting body 1 is provided with a receiving groove, the shell 2 is embedded in the receiving groove, and the outer surface of the shell 2 can be provided with external threads, the receiving groove is provided with internal threads, and the shell 2 is fixed in the receiving groove through the threads.

[0026] Referring to 1, Figure 4 The shell 2 is provided with an outer ring corresponding to the receiving groove, the outer ring is abutted on the outside of the receiving groove when the shell 2 is inserted into the receiving groove, and plays a role of installation limiting.

[0027] The second mounting body 3 closes and extrudes the buffer structure 5 towards the first mounting body 1, and the buffer structure 5 moves on the shell 2; the shell 2 is provided with a guide portion corresponding to the movement position of the buffer structure 5, and the buffer structure 5 moves along the guide portion.

[0028] The buffer structure 5 is inserted into the shell 2 and penetrates the guide portion during installation, and a protrusion is arranged between the guide portion and the buffer structure 5.

[0029] In the embodiment, the protrusion can be arranged on the outer surface of the push rod 9 of the buffer structure 5.

[0030] The buffer structure 5 is provided with a limiting portion corresponding to the guide portion, and the outer diameter of the limiting portion is greater than the outer diameter of the guide portion.

[0031] The guide portion comprises a guide groove 2.1 arranged on a part of the shell 2, and the inner diameter of the guide groove 2.1 is smaller than the inner diameter of another part of the shell 2.

[0032] The buffer structure 5 comprises a compression spring 8 and a push rod 9, the limiting part comprises a limiting ring 9.1 arranged on the push rod 9, one end of the compression spring 8 abuts against the limiting ring 9.1, and the other end of the compression spring 8 abuts against the third magnet 7; or the buffer structure 5 comprises a damper cylinder and a piston rod arranged in the damper cylinder in an extending and retracting manner.

[0033] In the embodiment, the protrusion can be arranged on the outer surface of the push rod 9 of the buffer structure 5; or the shell 2 comprises a first shell and a second shell, the inner diameter of the second shell is smaller than the inner diameter of the first shell, so that the inner cavity of the second shell forms a guide part, and the protrusion can be arranged on the inner cavity of the second shell.

[0034] The push rod 9 is provided with a first fixing groove 9.2 for mounting the second magnet 6.

[0035] The self-closing buffer device further comprises a plug cover 10 assembled with the shell 2, and the plug cover 10 is provided with a second fixing groove 10.1 for mounting the third magnet 7.

[0036] The plug cover 10 is inserted into the shell 2, and a clamping structure and a fixing structure are arranged between the plug cover 10 and the shell 2, so that the plug cover 10 is fixed on the shell 2.

[0037] The clamping structure comprises a positioning protrusion 10.2 arranged on the plug cover 10 and a notch 2.2 arranged on the shell 2, and the positioning protrusion 10.2 is clamped and limited in the notch 2.2 during installation; the fixing structure comprises a first fixing hole 10.3 arranged on the plug cover 10 and a second fixing hole 2.3 arranged on the shell 2, and the first fixing hole 10.3 and the second fixing hole 2.3 are connected by a fastener 11 during installation.

[0038] In the embodiment, the fastener 11 is a bolt, the positioning protrusion 10.2 is clamped and limited in the notch 2.2 during installation, and the first fixing hole 10.3 and the second fixing hole 2.3 are aligned.

[0039] The above is the preferred scheme of the present application, which shows and describes the basic principle, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application. Various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A self-closing buffer device comprising a housing (2) fixed to a first mounting body (1); a second mounting body (3) hinged to the first mounting body (1); a first magnet (4) fixed to the second mounting body (3); characterized in that: The shell (2) is provided with a buffer structure (5); the shell (2) is provided with a guide part corresponding to the movement position of the buffer structure (5), the guide part comprises a guide groove (2.1) arranged on the first part of the shell (2), and the inner diameter of the guide groove (2.1) is smaller than the second part of the shell (2); The buffer structure (5) further comprises: a compression spring (8) arranged in the shell (2); a limiting part corresponding to the guide part and having an outer diameter larger than that of the guide part; And a push rod (9) abutting against the first end of the compression spring (8) through the limiting part; The limiting part comprises a limiting ring (9.1) arranged on the first end of the push rod (9), and the outer diameter of the limiting ring (9.1) is larger than that of the guide part; The second end of the push rod (9) is provided with a first fixing groove (9.2), and the first fixing groove (9.2) is provided with a second magnet (6) which is attracted to the first magnet (4) by an opposite polarity; when the second mounting body (3) moves towards the first mounting body (1), the first magnet (4) approaches the second magnet (6), and the magnetic field is strengthened; The first end of the compression spring (8) abuts against the limiting ring (9.1), and the second end of the compression spring (8) abuts against a third magnet (7) which is attracted to the second magnet (6) by an opposite polarity; when the second mounting body (3) moves towards the first mounting body (1), the second magnet (6) and the third magnet (7) are attracted to each other by an opposite polarity, so that the first magnet (4), the second magnet (6) and the second mounting body (3) move towards the third magnet (7) and generate a closing force of the second mounting body (3) closing on the first mounting body (1), so as to realize automatic closing.

2. The self-relieving cushioning device of claim 1, wherein: The second mounting body (3) is closed and extruded on the buffer structure (5), and the buffer structure (5) moves on the shell (2).

3. The self-relieving cushioning device of claim 2, wherein: The buffer structure (5) comprising the compression spring (8) and the push rod (9) is inserted into the shell (2) and penetrates through the guide part during installation, and a protrusion is arranged between the guide part and the buffer structure (5).

4. Self-closing buffer according to any of claims 1-3, characterized in that: Further comprising a plug cover (10) assembled with the shell (2), and the plug cover (10) is provided with a second fixing groove (10.1) for mounting the third magnet (7).

5. The self-relieving cushioning device of claim 4, wherein: The plug cover (10) is inserted into the shell (2), and a clamping structure and a fixing structure are arranged between the plug cover (10) and the shell (2) to fix the plug cover (10) on the shell (2).

6. The self-relieving cushioning device of claim 5, wherein: The clamping structure comprises a positioning protrusion (10.2) arranged on the plug cover (10) and a notch (2.2) arranged on the shell (2), and the positioning protrusion (10.2) is clamped in the notch (2.2) during installation; the fixing structure comprises a first fixing hole (10.3) arranged on the plug cover (10) and a second fixing hole (2.3) arranged on the shell (2), and the first fixing hole (10.3) and the second fixing hole (2.3) are connected by a fastener (11) during installation.

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