Flip buffering mechanism and equipment

Abstract

The utility model discloses a flip cover buffer mechanism and equipment, the relative position of a left connecting structure and a left rotating shaft is fixed, the relative position of a right connecting structure and a right rotating shaft is fixed, and double torsion springs provide mutual repulsive elasticity for the left connecting structure and the right connecting structure. The damping piece is fixed at one end of the left rotating shaft and one end of the right rotating shaft, can slow down the relative opening and closing speed of the left connecting structure and the right connecting structure, and has the effect of buffering the instant impact of the cover turning when being applied to the cover turning mechanism; when the flip buffering mechanism is applied to the flip equipment, the left connecting structure is connected with the machine body, and the right connecting structure is connected with the machine cover, so that the flip equipment has a flip buffering function.

Description

Technical Field

[0001] The utility model relates to the technical field of flip cover transmission structure, in particular to a flip cover buffer mechanism and equipment. Background Art

[0002] The clamshell structure is a mechanical structure widely used in various devices, such as mobile phones, laptops, portable electronic devices, etc. The traditional clamshell structure design mainly focuses on providing a stable connection and protecting internal components, but often ignores certain aspects of the user experience, especially in the process of opening and closing the cover;

[0003] Existing flip cover structures generally use simple mechanical connections, such as hinges or springs, to make opening and closing the cover quick and direct. Although this design ensures structural stability to a certain extent, it fails to provide the slow opening function expected by users;

[0004] A flip cover structure without a slow opening function may cause inconvenience to users in actual use. For example, when the device needs to be opened slowly to display content or make a demonstration, a quick opening action may not only cause the content to be suddenly displayed, but may also cause impact to sensitive components inside the device, increasing the risk of damage. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a mechanism with a flip cover buffering function and a flip cover buffering device.

[0006] The first technical solution adopted by the utility model to solve its technical problem is:

[0007] A flip cover buffer mechanism comprises: a housing, a left connecting structure, a right connecting structure, a left rotating shaft, a right rotating shaft, a double torsion spring, a damping member and a fixing member;

[0008] The relative positions of the left connecting structure and the left rotating shaft are fixed, and the relative positions of the right connecting structure and the right rotating shaft are fixed;

[0009] The fixing member is disposed in the housing, the fixing member is rotatably connected to the left rotating shaft and the right rotating shaft, and the fixing member is used to fix the relative position of the left rotating shaft and the right rotating shaft;

[0010] The double torsion spring comprises a left-handed torsion spring coil, a right-handed torsion spring coil, a left force arm connected to the left-handed torsion spring coil, a right force arm connected to the right-handed torsion spring coil, and a connecting arm connecting the left-handed torsion spring coil and the right-handed torsion spring coil;

[0011] The left-handed torsion spring coil is sleeved outside the left rotating shaft, and the right-handed torsion spring coil is sleeved outside the right rotating shaft;

[0012] The left force arm is fixedly connected to the left connecting structure, and the right force arm is fixedly connected to the right connecting structure;

[0013] The damping member is fixed on the housing and sleeved on one end of the left rotating shaft and the right rotating shaft.

[0014] In the flip cover buffer mechanism as described above, teeth are arranged on the left rotating shaft and the right rotating shaft, and a reverse transmission gear set is arranged between the left rotating shaft and the right rotating shaft.

[0015] In the flip cover buffer mechanism as described above, the fixing member comprises a first fixing member arranged adjacent to the double torsion spring, and the first fixing member is provided with a double torsion spring fixing member for fixing the connecting arm.

[0016] As described above, in the flip cover buffer mechanism, a buckle is provided on the side of the first fixing member facing away from the double torsion spring fixing member, and a slot engaged with the buckle is provided on the damping member.

[0017] The flip cover buffer mechanism as described above, the fixing member further comprises a second fixing member disposed between the reverse transmission gear set and the double torsion spring, and a third fixing member disposed on a side of the reverse transmission gear set facing away from the double torsion spring;

[0018] A fourth fixing member is also provided on a side of the third fixing member away from the reverse transmission gear set.

[0019] As described above, in the flip cover buffer mechanism, an elastic pressure member with a stretching tendency is provided on the left rotating shaft and the right rotating shaft and between the fourth fixing member and the third fixing member.

[0020] The second technical solution adopted by the utility model to solve its technical problem is:

[0021] A flap buffer device, comprising the flap buffer mechanism as described above;

[0022] The left connecting structure is connected to a machine body, and the right connecting structure is connected to a machine cover.

[0023] As described above, the flip cover buffer device comprises multiple groups of flip cover buffer mechanisms.

[0024] The flip cover buffer device as described above, the cover is provided with a limit groove, the body is provided with a limit button, a transmission mechanism and a limit protrusion that can be retractably inserted into the limit groove;

[0025] The transmission mechanism includes a push block, a transverse elastic member, a passive push block and a vertical elastic member;

[0026] The limit button is fixedly connected to the push block;

[0027] The transverse elastic member is arranged on a side of the push block away from the limit button, and one end of the transverse elastic member abuts against the side wall of the push block, and the other end of the transverse elastic member abuts against the inner wall of the body;

[0028] The passive push block is arranged on one side of the push block, and the limiting protrusion is fixedly connected to the passive push block;

[0029] The vertical elastic member is arranged in the direction of the limiting groove, and one end of the vertical elastic member abuts against the inner wall of the body, and the other end of the vertical elastic member abuts against the pushing block;

[0030] The pushing block is provided with an inserting block, and the passive pushing block is provided with a slot matched with the inserting block, and the slot is located above the inserting block;

[0031] Pressing the limit button can push the push block to squeeze the transverse elastic member and drive the insert block to leave the slot; as the push block moves, the insert block lifts up the push block, and the push block and the inner wall of the body jointly squeeze the vertical elastic member, thereby driving the limit protrusion to leave the limit groove;

[0032] The limit button is released, the transverse elastic member and the vertical elastic member are relaxed, the pushing block and the passive pushing block are reset, and the inserting block is embedded in the slot.

[0033] As described above, in the flip cover buffer device, the end of the limiting protrusion has a guiding slope, and the guiding slope is used to guide the limiting groove to engage with the limiting protrusion.

[0034] The beneficial effects of the utility model are:

[0035] The relative positions of the left connecting structure and the left rotating shaft are fixed, and the relative positions of the right connecting structure and the right rotating shaft are fixed. The double torsion spring provides elasticity for the left connecting structure and the right connecting structure to repel each other. The damping member is fixed at one end of the left rotating shaft and the right rotating shaft, and can slow down the relative opening and closing speed of the left connecting structure and the right connecting structure. When applied to the flip cover mechanism, it has the effect of buffering the instantaneous impact of the flip cover.

[0036] When the above-mentioned flip cover buffering mechanism is applied to a flip cover device, the left connecting structure is connected to the body and the right connecting structure is connected to the cover, so that the flip cover device can have the function of buffering the flip cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Figure 1 is a structural schematic diagram of embodiment 1;

[0039] Figure 2 is a cross-sectional view of the first embodiment;

[0040] Figure 3 is an exploded view of the first embodiment;

[0041] Figure 4 This is one of the structural diagrams of the second embodiment;

[0042] Figure 5 This is the second structural diagram of the second embodiment;

[0043] Figure 6 is an exploded view of the second embodiment;

[0044] Figure 7 is one of the cross-sectional views of the second embodiment;

[0045] Figure 8 is the second cross-sectional view of the second embodiment;

[0046] 10-elastic pressure member; 11-housing; 12-left connecting structure; 13-right connecting structure; 14-left rotating shaft; 15-right rotating shaft; 16-double torsion spring; 161-left-handed torsion spring coil; 162-right-handed torsion spring coil; 163-left force arm; 164-right force arm; 165-connecting arm; 17-damping member; 171-slot; 18-fixing member; 181-first fixing member; 182-second fixing member; 183-third fixing member; 18 4-the fourth fixing piece; 185-the double torsion spring fixing piece; 186-the buckle; 19-the reverse transmission gear set; 191-the transmission gear; 2-the machine body; 3-the machine cover; 31-the limiting groove; 4-the transmission mechanism; 41-the pushing block; 42-the transverse elastic piece; 43-the passive pushing block; 44-the vertical elastic piece; 412-the insert block; 431-the slot; 413-the guiding slope; 411-the limiting protrusion; 5-the limiting button; 61-the limiting nut. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0048] Embodiment 1:

[0049] Reference Figure 1 , Figure 2 , a flip cover buffer mechanism, comprising: a housing 11, a left connecting structure 12, a right connecting structure 13, a left rotating shaft 14, a right rotating shaft 15, a double torsion spring 16, a damping member 17 and a fixing member 18;

[0050] The relative positions of the left connecting structure 12 and the left rotating shaft 14 are fixed. The left connecting structure 12 and the left rotating shaft 14 may be integrally formed, or the left connecting structure 12 may be fixed to the left rotating shaft 14 by a mechanical structure or adhesive.

[0051] The relative positions of the right connecting structure 13 and the right rotating shaft 15 are fixed, and the fixing method thereof can refer to the fixing method of the left connecting structure 12 and the left rotating shaft 14;

[0052] The fixing member 18 is arranged in the housing 11, and is provided with a left shaft through groove (not shown in the figure) and a right shaft through groove (not shown in the figure) for inserting the left shaft 14 and the right shaft 15. The left shaft 14 is inserted into the left shaft through groove, and the right shaft 15 is inserted into the right shaft through groove. The inner walls of the left shaft 14 and the right shaft 15, or the left shaft through groove and the right shaft through groove can be made of self-lubricating material, or the left shaft through groove and the right shaft through groove can be made of self-lubricating material. The inner diameter is larger than the diameter of the left rotating shaft 14 and the right rotating shaft 15, so that the left rotating shaft 14 and the right rotating shaft 15 are rotatably connected by the fixing member 18; wherein, there are at least two fixing members 18, and the fixing members 18 are distributed along the axial direction of the left rotating shaft 14 and the right rotating shaft 15, and the fixing members 18 limit the rotational freedom of the left rotating shaft 14 and the right rotating shaft 15, and the left rotating shaft 14 and the right rotating shaft 15 can only rotate along their axial direction, so as to fix the relative position of the left rotating shaft 14 and the right rotating shaft 15;

[0053] Specifically, when applied to the flip cover mechanism, the flipping of the cover is around the axis as the rotation center. Therefore, the left rotating shaft 14 is arranged parallel to the right rotating shaft 15, which can ensure that the left connecting structure 12 of the flip cover buffer mechanism in this embodiment can be smoothly opened and closed relative to the right connecting structure 13, and when the flip cover structure connected by the left connecting structure 12 and the right connecting structure 13 is in a closed state, the left connecting structure 12 is parallel to the right connecting structure 13, ensuring that the two connected parts are relatively fit.

[0054] The double torsion spring 16 includes a left-handed torsion spring coil 161, a right-handed torsion spring coil 162, a left force arm 163 connected to the left-handed torsion spring coil 161, a right force arm 164 connected to the right-handed torsion spring coil 162, and a connecting arm 165 connecting the left-handed torsion spring coil 161 and the right-handed torsion spring coil 162;

[0055] The left-handed torsion spring coil 161 is sleeved outside the left rotating shaft 14, and the right-handed torsion spring coil 162 is sleeved outside the right rotating shaft 15;

[0056] The left force arm 163 is fixedly connected to the left connecting structure 12, and the right force arm 164 is fixedly connected to the right connecting structure 13;

[0057] When the flip cover buffer mechanism is closed, the force is applied to make the left connection structure 12 approach the right connection structure 13, driving the left force arm 163 and the right force arm 164 to rotate synchronously, and the left-handed torsion spring coil 161 and the right-handed torsion spring coil 162 are twisted. The torque of the double torsion spring 16 causes deformation and stores elastic potential energy.

[0058] The damping member 17 is fixed on the housing 11 and is sleeved on one end of the left rotating shaft 14 and the right rotating shaft 15;

[0059] Reference Figure 3 When the cover is flipped, the restrictions on the left connecting structure 12 and the right connecting structure 13 are released. Under the action of the double torsion spring 16, the left force arm 163 and the left connecting structure 12 rotate with the axis of the left rotating shaft 14 as the rotating axis, driving the left rotating shaft 14 to rotate; the right force arm 164 and the right connecting structure 13 rotate with the axis of the right rotating shaft 15 as the rotating axis, the left rotating shaft 14 rotates counterclockwise, and the right rotating shaft 15 rotates clockwise; due to the setting of the damping member 17, the damping member 17 has a clockwise resistance to the left rotating shaft 14 and a counterclockwise resistance to the right rotating shaft 15, thereby realizing the buffering flip function.

[0060] Furthermore, teeth are provided on the left rotating shaft 14 and the right rotating shaft 15, and a reverse transmission gear set 19 is provided between the left rotating shaft 14 and the right rotating shaft 15; the reverse transmission gear set 19 meshes with the teeth on the left rotating shaft 14 on one side and meshes with the teeth on the right rotating shaft 15 on the other side; the setting of the reverse transmission gear set 19 can ensure that the left connecting structure 12 and the right connecting structure 13 rotate at the same speed, and cooperate with the damping member 17 to achieve stable and uniform flipping.

[0061] The reverse transmission gear set 19 includes two identical transmission gears 191 ; specifically, the number of teeth on the transmission gear 191 is less than the number of teeth on the left shaft 14 and the right shaft 15 .

[0062] Furthermore, the fixing member 18 includes a first fixing member 181 arranged adjacent to the double torsion spring 16, and the first fixing member 181 is provided with a double torsion spring fixing member 185 for fixing the connecting arm 165; the double torsion spring fixing member 185 is provided with a first groove 187 for placing the connecting arm 165, and the function of the double torsion spring fixing member 185 is to limit the axial movement of the double torsion spring 16 along the left rotating shaft 14 or the right rotating shaft 15, so as to avoid bending of the connecting arm 165 due to the strain force when the double torsion spring 16 is deformed.

[0063] Specifically, a buckle 186 is provided on the side of the first fixing member 181 facing away from the double torsion spring fixing member 185, and a slot 171 engaged with the buckle 186 is provided on the damping member 17; the buckle 186 is snapped into the slot 171 to fix the damping member 17 on the first fixing member 181. Since the damping member 17 is arranged at the ends of the left rotating shaft 14 and the right rotating shaft 15, and the first fixing member 181 is fixedly arranged in the shell 11, it can prevent the damping member 17 from falling off and further stabilize the positions of the left rotating shaft 14 and the right rotating shaft 15 in the shell 11.

[0064] Specifically, the fixing member 18 further includes a second fixing member 182 disposed between the reverse transmission gear set 19 and the double torsion spring 16. At this time, the two ends of the double torsion spring 16 are respectively provided with a first fixing member 181 and a second fixing member 182. In order to better fix the position of the double torsion spring 16, the second fixing member 182 can contact the right-handed torsion spring coil 162 and the left-handed torsion spring coil 161.

[0065] A third fixing member 183 is provided on the side of the reverse transmission gear set 19 facing away from the double torsion spring 16. At this time, the third fixing member 183 and the second fixing member 182 are provided at both ends of the reverse transmission gear set 19, and similarly, they can also play a role in limiting the axial movement of the reverse transmission gear set 19 along the left rotation shaft 14 / right rotation shaft 15;

[0066] A fourth fixing member 184 is further provided on a side of the third fixing member 183 away from the reverse transmission gear set 19;

[0067] More specifically, an elastic pressure member 10 with a stretching tendency is provided on the left rotating shaft 14 and the right rotating shaft 15 and located between the fourth fixing member 184 and the third fixing member 183. The ends of the left rotating shaft 14 and the right rotating shaft 15 close to the fourth fixing member 184 have external threads, and the ends can be connected to the limiting nut 61; one side of the limiting nut 61 is in contact with the fourth fixing member 184, and the two ends of the elastic pressure member 10 are respectively provided with the third fixing member 183 and the fourth fixing member 184; the elastic pressure member 10 can make the third fixing member 183 keep the third fixing member 183 always against one end of the reverse transmission gear set 19, so as to stably fix the position of the reverse transmission gear set 19 in the housing 11;

[0068] Specifically, the elastic pressure member 10 can be any one of a wave spring, a butterfly spring or a compression spring.

[0069] Embodiment 2:

[0070] Reference Figure 4-Figure 7 , a flap buffer device, comprising the flap buffer mechanism in embodiment 1;

[0071] The left connecting structure 12 is connected to a machine body 2 , and the right connecting structure 13 is connected to a machine cover 3 .

[0072] The flip cover buffer device can be used for products such as flip cover mobile phones, flip cover glasses cases, and cosmetics cases.

[0073] Furthermore, the flip cover buffer mechanism is composed of multiple groups, which are arranged on the central axis along which the body 2 and the cover 3 flip relative to each other; preferably, the flip cover buffer mechanism is composed of two groups, which are respectively arranged at both ends of the central axis, so that the opening and closing force of the cover 3 relative to the body 2 is more stable.

[0074] Furthermore, the cover 3 is provided with a limit groove 31, the side wall of the body 2 is provided with a limit button 5, the body 2 is provided with a transmission mechanism 4 and a limit protrusion 411 which can be retractably inserted into the limit groove 31;

[0075] The transmission mechanism includes a push block 41, a transverse elastic member 42, a passive push block 43 and a vertical elastic member 44;

[0076] The limit button 5 is fixedly connected to the push block 41;

[0077] The transverse elastic member 42 is disposed on a side of the push block 41 away from the limit button 5, and one end of the transverse elastic member 42 abuts against the side wall of the push block 41, and the other end of the transverse elastic member 42 abuts against the inner wall of the body 2;

[0078] The passive push block 43 is disposed on one side of the push block 41, and the limiting protrusion 411 is fixedly connected to the passive push block 43;

[0079] The vertical elastic member 44 is arranged toward the direction of the limiting groove 31, and one end of the vertical elastic member 44 abuts against the inner wall of the body 2, and the other end of the vertical elastic member 44 abuts against the pushing block 41;

[0080] The pushing block 41 is provided with an inserting block 412, and the passive pushing block 43 is provided with a slot 431 matched with the inserting block 412, and the slot 431 is located above the inserting block 412;

[0081] Pressing the limit button 5 can push the push block 41 to squeeze the transverse elastic member 42 and drive the insert block 412 to leave the slot 431; as the push block 41 moves, the insert block 412 lifts the push block 41, and the push block 41 and the inner wall of the body 2 jointly squeeze the vertical elastic member 44, thereby driving the limit protrusion 411 to leave the limit groove 31;

[0082] The limit button 5 is released, the transverse elastic member 42 and the vertical elastic member 44 are relaxed, the push block 41 and the passive push block 43 are reset, and the insert block 412 is inserted into the slot 431; if the device is in a closed state, the limit protrusion 411 is inserted into the groove 31;

[0083] In this way, pressing the limit button 5 can make the device have the function of slowly opening, and the content in the body 2 can be gradually displayed when the cover needs to be opened; this can increase the viewer's expectations and enhance the sense of ceremony;

[0084] Furthermore, when the cover 3 is closed, the damping member 17 can prevent the cover 3 and the body 2 from causing impact and damaging the components in the cover 3 or the body 2 .

[0085] Although the above structure can fix the relative position of the cover 3 and the body 2, when closing the cover 3, it is necessary to repeatedly press and release the limit button 5, which is not convenient enough;

[0086] As an improvement to solve the above problem, the end of the limiting protrusion 411 has a guiding slope 413, and the guiding slope 413 is used to guide the limiting groove 31 to engage with the limiting protrusion 411, that is, pressing the machine cover 3 can make the limiting protrusion 411 inserted into the groove 31; during the process of closing the cover, it can be operated with one hand, which is convenient and quick.

[0087] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A flip cover buffer mechanism, characterized in that: include: A housing (11), a left connecting structure (12), a right connecting structure (13), a left rotating shaft (14), a right rotating shaft (15), a double torsion spring (16), a damping member (17) and a fixing member (18); The relative positions of the left connecting structure (12) and the left rotating shaft (14) are fixed, and the relative positions of the right connecting structure (13) and the right rotating shaft (15) are fixed; The fixing member (18) is disposed in the housing (11), the fixing member (18) is rotatably connected to the left rotating shaft (14) and the right rotating shaft (15), and the fixing member (18) is used to fix the relative position of the left rotating shaft (14) and the right rotating shaft (15); The double torsion spring (16) comprises a left-handed torsion spring coil (161), a right-handed torsion spring coil (162), a left force arm (163) connected to the left-handed torsion spring coil (161), a right force arm (164) connected to the right-handed torsion spring coil (162), and a connecting arm (165) connecting the left-handed torsion spring coil (161) and the right-handed torsion spring coil (162); The left-handed torsion spring coil (161) is sleeved outside the left rotating shaft (14), and the right-handed torsion spring coil (162) is sleeved outside the right rotating shaft (15); The left force arm (163) is fixedly connected to the left connection structure (12), and the right force arm (164) is fixedly connected to the right connection structure (13); The damping member (17) is fixed on the housing (11) and is sleeved on one end of the left rotating shaft (14) and the right rotating shaft (15).

2. The flip cover buffer mechanism according to claim 1, characterized in that: The left rotating shaft (14) and the right rotating shaft (15) are provided with teeth, and a reverse transmission gear set (19) is provided between the left rotating shaft (14) and the right rotating shaft (15).

3. The flip cover buffer mechanism according to claim 1, characterized in that: The fixing member (18) comprises a first fixing member (181) arranged adjacent to the double torsion spring (16), and the first fixing member (181) is provided with a double torsion spring fixing member (185) for fixing the connecting arm (165).

4. The flip cover buffer mechanism according to claim 3, characterized in that: A buckle (186) is provided on the side of the first fixing member (181) facing away from the double torsion spring fixing member (185), and a slot (171) engaged with the buckle (186) is provided on the damping member (17).

5. The flip cover buffer mechanism according to claim 2, characterized in that: The fixing member (18) further comprises a second fixing member (182) arranged between the reverse transmission gear set (19) and the double torsion spring (16), and a third fixing member (183) arranged on a side of the reverse transmission gear set (19) facing away from the double torsion spring (16); A fourth fixing member (184) is also provided on the side of the third fixing member (183) away from the reverse transmission gear set (19).

6. The flip cover buffer mechanism according to claim 5, characterized in that: An elastic pressure member (10) having a stretching tendency is provided on the left rotating shaft (14) and the right rotating shaft (15) and is located between the fourth fixing member (184) and the third fixing member (183).

7. A flip cover buffer device, characterized in that: comprising a flip cover buffer mechanism as claimed in any one of claims 1 to 6; The left connecting structure (12) is connected to a machine body (2), and the right connecting structure (13) is connected to a machine cover (3).

8. The flip cover buffer device according to claim 7, characterized in that: The flip cover buffer mechanism is divided into multiple groups.

9. The flip cover buffer device according to claim 7, characterized in that: The cover (3) is provided with a limiting groove (31), and the body (2) is provided with a limiting button (5), a transmission mechanism (4), and a limiting protrusion (411) which can be retractably inserted into the limiting groove (31); The transmission mechanism comprises a pushing block (41), a transverse elastic member (42), a passive pushing block (43) and a vertical elastic member (44); The limit button (5) is fixedly connected to the push block (41); The transverse elastic member (42) is arranged on a side of the pushing block (41) away from the limit button (5), and one end of the transverse elastic member (42) abuts against the side wall of the pushing block (41), and the other end of the transverse elastic member (42) abuts against the inner wall of the body (2); The passive push block (43) is arranged on one side of the push block (41), and the limiting protrusion (411) is fixedly connected to the passive push block (43); The vertical elastic member (44) is arranged in the direction of the limiting groove (31), and one end of the vertical elastic member (44) abuts against the inner wall of the body (2), and the other end of the vertical elastic member (44) abuts against the pushing block (41); The pushing block (41) is provided with an inserting block (412), and the passive pushing block (43) is provided with a slot (431) that matches the inserting block (412), and the slot (431) is located above the inserting block (412); Pressing the limit button (5) can push the push block (41) to squeeze the transverse elastic member (42) and drive the insert block (412) to leave the slot (431); as the push block (41) moves, the insert block (412) lifts up the push block (41), and the push block (41) and the inner wall of the body (2) jointly squeeze the vertical elastic member (44), thereby driving the limit protrusion (411) to leave the limit groove (31); The limit button (5) is released, the transverse elastic member (42) and the vertical elastic member (44) are relaxed, the push block (41) and the passive push block (43) are reset, and the insert block (412) is embedded in the slot (431).

10. The flip cover buffer device according to claim 9, characterized in that: The end of the limiting protrusion (411) has a guiding inclined surface (413), and the guiding inclined surface (413) is used to guide the limiting groove (31) to engage with the limiting protrusion (411).

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