Hidden bidirectional folding mechanism

Abstract

The utility model relates to the technical field of automobiles and furniture, in particular to a hidden type bidirectional folding mechanism which comprises a first shell, a second shell, a third shell, four check rings, a first shaft body, a second shaft body and a torsion unit, and the cross section of the first shell and the cross section of the second shell are in a C shape. The key folding mechanism is contained in the small table board and perfectly fused with the whole vehicle interior decoration style, the table board can flexibly change the position and angle through the bidirectional folding function, the two folded main bodies can be folded in half from a plane to mutually rotate by 180 degrees, the use requirements of multiple scenes are fully met, and the use effect is good. According to the mechanism, the torque of clockwise rotation and the torque of anticlockwise rotation are different, different torques can be provided in the clockwise rotation direction and the anticlockwise rotation direction in the rotation process, and the different requirements of a user for force are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile, furniture, concretely is a kind of hidden two-way folding mechanism. BACKGROUND

[0002] In order to solve the comfort, aesthetic and furniture industry opening and closing convenient demand inside automobile, by hidden design, the key folding mechanism is stored in small table board, and it is perfectly integrated with the whole vehicle interior style, greatly improve the overall appearance and quality feeling in car, two-way folding function makes table board can change position and angle flexibly, can make two folding main bodies from plane to fold to each other rotate one hundred and eighty degrees, fully meet the demand of multi-scene use;

[0003] Most of the existing small table board folding mechanism exposes folding mechanism, affects the overall appearance in car, common one-way folding mode limits the flexibility of table board use, cannot fully meet the demand of table board space position under different sitting posture, different use scene, and the existing folding angle is limited, difficult to adapt to more complex use condition, and the support stability of table board also needs to be strengthened, and some small table board folding mechanism cannot realize torque clockwise and counterclockwise torque same or torque different function;

[0004] In order to better solve the folding mechanism of small table board of automobile seat exposed outside, improve the overall coordination and appearance of automobile interior, and realize the free change from zero to one hundred and eighty degrees or even larger, the present application particularly proposes a kind of hidden two-way folding mechanism to solve the problems proposed in the background art, realize the assembly of different torque or the assembly of same torque of clockwise rotation and counterclockwise rotation. SUMMARY

[0005] The utility model discloses to the shortage of prior art, provide a kind of hidden two-way folding mechanism, to solve the problems proposed in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of hidden two-way folding mechanism, including first shell, second shell, third shell, four check rings, shaft body one, shaft body two and torsion unit, the cross section of first shell and second shell is C-shaped;

[0007] One end of the shaft body one is sequentially penetrated by third shell, two check rings and torsion unit, and the shaft body one is installed in the inside of first shell;

[0008] One end of the shaft body two is sequentially penetrated by third shell, two check rings and torsion unit, and the shaft body two is installed in the inside of second shell;

[0009] The inside of the third shell is installed with pin, and the pin is penetrated with torsion unit, and is matched with its interference;

[0010] The side surface of the first shell, the second shell and the third shell are jointly provided with cover plate one and cover plate two

[0011] The blocking ring comprises an outer ring and an inner ring.

[0012] Preferably, the surface of the first shell is provided with a first shell rod, the left side of the first shell rod is fixedly connected with a first shell left side symmetrical part, and the right side of the first shell rod is fixedly connected with a first shell right side symmetrical part.

[0013] The left side surface of the first shell left side symmetrical part is respectively provided with a first shell main thread hole one, a first shell main thread hole two, a first shell main thread groove and a first shell main side hole.

[0014] The surface of the first shell right side symmetrical part is respectively provided with a first shell auxiliary thread hole one, a first shell auxiliary thread hole two, a first shell auxiliary thread hole two and a first shell symmetrical hole.

[0015] Preferably, the surface of the second shell is fixedly connected with a second shell rod, the left side of the second shell rod is fixedly connected with a second shell left side symmetrical part, and the right side of the second shell rod is fixedly connected with a second shell right side symmetrical part.

[0016] The surface of the second shell left side symmetrical part is respectively provided with a second shell main thread hole one, a second shell main thread hole two, a second shell main thread groove and a second shell main side hole.

[0017] The surface of the second shell right side symmetrical part is respectively provided with a second shell auxiliary thread hole one, a second shell auxiliary thread hole two, a second shell auxiliary thread hole two and a second shell symmetrical hole.

[0018] Preferably, the third shell comprises a light sheet, and an intermediate cavity is formed in the surface of the light sheet.

[0019] The upper end of the intermediate cavity is provided with a second angle and a third angle, and the lower end of the intermediate cavity is provided with a first angle and a fourth angle.

[0020] The left and right sides of the light sheet are respectively provided with a third shell middle part, the inner side of the third shell middle part is provided with a third shell head part, the outer side of the third shell middle part is provided with a third shell tail part, and the third shell middle part and the third shell tail part are respectively provided with a third shell upper rear part and a third shell lower rear part.

[0021] The pin penetrates through the torsion unit and is installed at the position of the third shell upper rear part.

[0022] Preferably, one end surface of the shaft body one is provided with a shaft body one knurling part, the other end surface of the shaft body one is provided with a shaft body one guide part, and the middle position of the surface of the shaft body one is provided with a shaft body one core.

[0023] Two of the retaining rings are respectively installed on the surfaces of the shaft body one guide part and the shaft body one knurling part, and the shaft body one core penetrates through the interiors of the second corner and the third corner.

[0024] Preferably, one end surface of the shaft body two is provided with a shaft body two knurling part, the other end surface of the shaft body two is provided with a shaft body two guide part, and the middle position of the surface of the shaft body two is provided with a shaft body two core.

[0025] The other two retaining rings are respectively installed on the surfaces of the shaft body two guide part and the shaft body two knurling part, and the shaft body two core penetrates through the interiors of the first corner and the fourth corner.

[0026] Preferably, the inside of the torsion unit is provided with an internal missing slot, and the surface of the torsion unit is respectively provided with a support structure one, a support structure two and a variable structure.

[0027] The connection part of the support structure one and the support structure two is provided with an oil groove structure one, and the connection part of the support structure one and the variable structure is provided with an oil groove structure two.

[0028] The top of the variable structure is provided with an upper matching end, the end of the support structure two is provided with a lower matching end, and the surface of the lower matching end is respectively provided with a bottom slot on the left and right sides, and a notch is provided above the bottom slot.

[0029] The cooperation between the torsion unit and the third shell assembly, the protruding part of the torsion unit, the support structure one notch and the third shell head and the third shell upper part on the shell are cooperated and fixed with each other.

[0030] The upper matching end and the third shell head are cooperated with each other, the lower matching end and the third shell tail are cooperated with each other, and the torsion unit and the third shell are fixed together.

[0031] The inner side surfaces of the support structure one, the support structure two and the variable structure are in contact with the shaft body one.

[0032] The oil groove structure two is located between the support structure one and the variable structure, and the oil groove structure one is located between the support structure one and the support structure two.

[0033] The shaft body two core penetrates in the inside of the torsion unit.

[0034] Preferably, the surface of the cover plate one is provided with a cover plate one large accessory and a cover plate one small accessory.

[0035] Preferably, the surface of the second cover plate is provided with a large accessory of the second cover plate and a small accessory of the second cover plate;

[0036] The first shell passes through the first shell main threaded hole one and the first shell auxiliary threaded hole one, and is fixed on the large accessory of the second cover plate and the small accessory of the second cover plate;

[0037] The second shell passes through the second shell main threaded hole one and the second shell auxiliary threaded hole one, and is installed at the large accessory of the second cover plate and the small accessory of the second cover plate;

[0038] The light and thin plate forms a shielding system through the connection of the first shell, the second shell, the first cover plate and the second cover plate.

[0039] Compared with the prior art, the utility model has the beneficial effects that:

[0040] 1. The key folding mechanism is accommodated in the small table plate, which is perfectly integrated with the overall vehicle interior style, and the bidirectional folding function enables the table plate to flexibly change position and angle, and enables the two folded main bodies to be folded from a plane to be rotated by one hundred and eighty degrees relative to each other, thereby fully meeting the use requirements in multiple scenes, and realizing the mechanism with different rotation torques in the clockwise and counterclockwise directions, thereby providing different torques in the clockwise and counterclockwise directions during rotation, and meeting the different force requirements of users;

[0041] 2. The specific parts of the first shell, i.e. the first shell symmetry hole, the first shell left side symmetry part, and the corresponding parts of the second shell, i.e. the second shell symmetry hole and the second shell left side symmetry part, can be molded into various shapes such as a circular arc, a wave shape or a plane, and the design is aimed at optimizing the cooperation with the third shell, and building a limiting system, so that the table plate can be rotated by one hundred and eighty degrees and by a larger angle;

[0042] 3. The first shell is precisely fixed on the large accessory of the second cover plate and the small accessory of the second cover plate by means of standard screws passing through the first shell main threaded hole one and the first shell auxiliary threaded hole one, and the second shell is firmly installed at the large accessory of the first cover plate and the small accessory of the first cover plate by means of standard screws passing through the second shell main threaded hole one and the second shell auxiliary threaded hole one, so that when the cover plate bears external force, the first shell and the second shell can be smoothly driven to rotate around the shaft in the third shell, thereby achieving the double-shaft rotation effect and realizing the bidirectional folding function;

[0043] 4. The pin is installed at the upper part of the third shell, and the pin passes through the spring sheet of the torsion unit and is in interference fit with the spring sheet, and the function of the pin is to eliminate the small gap of the spring sheet in the third shell, and to play a role of spring limiting and fixing, so that the whole mechanism is in a state of no shaking and abnormal sound;

[0044] 5. The left and right structures of the torsion unit are different. One side structure is a fixed and supported structure, the end faces of the upper and lower ends of the structure are matched with the shell, the lower end is a strong match, and the upper end is an auxiliary match. The other side structure is a flexible structure, the upper end of the structure is connected with the structure of the fixed end spring sheet, and the lower half of the other end is in a disconnected state. When force is applied, the released end deforms under stress, forming a spring structure to provide stable counter pressure for the overall structure. When the shaft has a tendency to rotate inside the spring, the fixed end and the flexible end jointly provide static friction. When the shaft rotates more than the friction, the shaft starts to rotate. Because the spring sheet has two different structures on both sides, when the rotating tendency of the shaft turns to the fixed structure side, the friction on the shaft increases. When the rotating tendency of the shaft turns to the changeable end, the friction on the shaft is smaller. Thus, different stress conditions are formed for left and right rotation.

[0045] 6. The first shell body main screw hole one, the first shell body auxiliary screw hole one, the second shell body main screw hole one, and the second shell body auxiliary screw hole one on one side of the screw holes of the first and second shells are connected by using standard screws. After the connection of the two sides is completed, the first working state is to rotate the two shells to make the torsion unit work, and then to rotate the torsion unit outward by 90 degrees to realize the working mode one flat state. In this mode, the internal mechanism can be well hidden.

[0046] 7. The second working mode is to rotate one side shell to make the torsion unit work to 90 degrees, and the other side is not rotated to realize the working mode two single side folding state. The third working mode is to rotate the two shells to make the torsion unit work, and then to rotate the torsion unit inward by 90 degrees to realize the working mode three closed state. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 It is a front structure three-dimensional schematic view of the total assembly of the utility model;

[0048] Figure 2 It is a back structure three-dimensional schematic view of the total assembly of the utility model;

[0049] Figure 3 It is an internal structure explosion schematic view of the total assembly of the utility model;

[0050] Figure 4 It is a structure three-dimensional schematic view of the second shell of the utility model;

[0051] Figure 5 It is a structure three-dimensional schematic view of the first shell of the utility model;

[0052] Figure 6-1 It is a plane structure three-dimensional schematic view of the third shell of the utility model;

[0053] Figure 6-2 is a front view of the third shell of the utility model;

[0054] Figure 6-3 is a side view of the third shell of the utility model;

[0055] Figure 7 is a structure of the utility model's blocking ring;

[0056] Figure 8 is a structure of the utility model's shaft.

[0057] Figure 9 is a structure of the utility model's pin.

[0058] Figure 10 is a structure of the utility model's torsion unit.

[0059] Figure 11 is a structure of the utility model's elastic sheet.

[0060] Figure 12-1 is a structure of the utility model's auxiliary cover plate's left side.

[0061] Figure 12-2 is a structure of the utility model's auxiliary cover plate's right side.

[0062] Figure 13-1 is a back view of the utility model's working mode.

[0063] Figure 13-2 is a front view of the utility model's working mode.

[0064] Figure 14 is an opening view of the utility model's working mode.

[0065] Figure 15 is a closing view of the utility model's working mode.

[0066] 100-1, first housing main threaded hole one; 100-2, first housing main threaded hole two; 100-3, first housing main threaded groove; 100-4, first housing main side hole; 100-5, first housing secondary threaded hole one; 100-6, first housing secondary threaded hole two; 100-7, first housing secondary threaded groove; 100-8, first housing symmetry hole; 100-9, first housing left side symmetry; 100-10, first housing right side symmetry; 100-11, first housing rod; 200, second housing; 200-1, second housing main threaded hole one; 200-2, second housing main threaded hole two; 200-3, second housing main threaded groove; 200-4, second housing main side hole; 200-5, second housing secondary threaded hole one; 200-6, second housing secondary threaded hole two; 200-7, second housing secondary threaded groove; 200-8, second housing symmetry hole; 200-9, second housing left side symmetry; 200-10, second housing right side symmetry; 200-11, second housing rod; 300, third housing; 300-1, third housing head; 300-2, third housing middle; 300-3, third housing upper back; 300-4, third housing end; 300-5, third housing lower back; 300-6, first angle; 300-7, second angle; 300-8, third angle; 300-9, fourth angle; 300-10, thin plate; 300-11, middle cavity; 400, stop ring; 400-1, outer ring; 400-2, inner ring; 500, shaft one; 500-1, shaft one core; 500-2, shaft one knurl part; 500-3, shaft one guide part; 600, shaft two; 600-1, shaft two core; 600-2, shaft two knurl part; 600-3, shaft two guide part; 700, pin; 800, torsion unit; 800-1, upper matching end; 800-2, support structure one; 800-3, oil groove structure one; 800-4, support structure two; 800-5, bottom notch; 800-6, lower matching end; 800-7, notch; 800-8, internal notch; 800-9, variable structure; 800-10, oil groove structure two; 900, cover one; 900-1, cover one large accessory; 900-2, cover one small accessory; 1000, cover two; 1000-1, cover two large accessory; 1000-2, cover two small accessory. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0068] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0069] As shown in Figures 1-15 The present embodiment is a hidden bidirectional folding mechanism, which comprises a first shell 100, a second shell 200, a third shell 300, four retaining rings 400, a shaft body one 500, a shaft body two 600 and a torsion unit 800, the cross section of the first shell 100 and the second shell 200 is C-shaped;

[0070] The torsion unit is composed of left and right torsion unit groups; inside each group of torsion units, the spring sheets can be arranged in the same direction or in the opposite direction according to different torsion requirements.

[0071] One end of the shaft body one 500 sequentially penetrates the third shell 300, the two retaining rings 400 and the torsion unit 800, and the shaft body one 500 is installed inside the first shell 100;

[0072] One end of the shaft body two 600 sequentially penetrates the third shell 300, the two retaining rings 400 and the torsion unit 800, and the shaft body two 600 is installed inside the second shell 200;

[0073] The third shell 300 has a pin 700 installed inside, the pin 700 penetrates the torsion unit 800 and is in interference fit with it;

[0074] The first shell 100, the second shell 200 and one side surface of the third shell 300 are jointly provided with a cover plate one 900 and a cover plate two 1000, which are arranged to connect the folding mechanism and the hidden folding mechanism.

[0075] The torsion part is composed of the structure of two groups of torsion units.

[0076] One: the elastic sheet installed in the first shell, which is composed of one torsion unit 800 or multiple elastic sheets; two: the shaft body one 500 installed in the base.

[0077] Two: the elastic sheet installed in the second shell, which is composed of one 800 or multiple elastic sheets; two: the shaft body two 600 installed in the base.

[0078] Three: the torsion unit 800 is composed of left and right torsion unit groups; in each group of torsion unit 800, the elastic sheets can be arranged in the same direction or in the opposite direction according to different torsion requirements.

[0079] The shaft body one 500 and the shaft body two 600 are arranged to pass through the third shell (300), the check ring (400) and the torsion unit 800, and are respectively fixed on the first shell 100 and the second shell 200.

[0080] The check ring 400 is mainly to prevent the elastic sheet installed inside from moving out of the pre-set position during movement, and at the same time, to maintain the gap between the first shell 100, the second shell 200 and the third shell 300.

[0081] The check ring 400 includes an outer ring 400-1 and an inner ring 400-2.

[0082] Further, the surface of the first shell 100 is provided with a first shell rod body 100-11, the left side of the first shell rod body 100-11 is fixedly connected with a first shell left side symmetry piece 100-9, and the right side of the first shell rod body 100-11 is fixedly connected with a first shell right side symmetry piece 100-10.

[0083] The left surface of the first shell left side symmetry piece 100-9 is respectively provided with a first shell main screw hole one 100-1, a first shell main screw hole two 100-2, a first shell main screw groove 100-3 and a first shell main side hole 100-4.

[0084] The surface of the first shell right side symmetry piece 100-10 is respectively provided with a first shell auxiliary screw hole one 100-5, a first shell auxiliary screw hole two 100-6, a first shell auxiliary screw hole two 100-6 and a first shell symmetry hole 100-8, which can effectively ensure the stability of the center of gravity of the whole device and meet the long-term use of the device.

[0085] Further, the surface of the second shell 200 is fixedly connected with a second shell rod body 200-11, the left side of the second shell rod body 200-11 is fixedly connected with a second shell left side symmetry piece 200-9, and the right side of the second shell rod body 200-11 is fixedly connected with a second shell right side symmetry piece 200-10.

[0086] The surface of the second shell left side symmetry piece 200-9 is respectively provided with a second shell main threaded hole one 200-1, a second shell main threaded hole two 200-2, a second shell main threaded groove 200-3 and a second shell main side hole 200-4;

[0087] The surface of the second shell right side symmetry piece 200-10 is respectively provided with a second shell auxiliary threaded hole one 200-5, a second shell auxiliary threaded hole two 200-6 and a second shell symmetry hole 200-8, which more effectively strengthens the matching coordination of each component during operation of the overall device and effectively reduces the probability of various unexpected situations occurring during use.

[0088] The specific part of the first shell 100, the first shell left side symmetry piece 100-9, the first shell symmetry hole 100-8, and the corresponding part of the second shell 200, the second shell symmetry hole 200-8, and the second shell left side symmetry piece 200-9, can be shaped as a circular arc, a wave shape or a plane, etc. This design aims to optimize the coordination with the third shell 300 and build a limiting system, so that the table board can rotate 0-180 degrees and rotate at a larger angle.

[0089] Further, the third shell 300 includes a thin plate 300-10, and the surface of the thin plate 300-10 is internally provided with a middle cavity 300-11;

[0090] The upper end of the middle cavity 300-11 is provided with a second corner 300-7 and a third corner 300-8, and the lower end of the middle cavity 300-11 is provided with a first corner 300-6 and a fourth corner 300-9;

[0091] The left and right sides of the thin plate 300-10 are respectively provided with a third shell middle part 300-2, the inner side of the third shell middle part 300-2 is provided with a third shell head part 300-1, the outer side of the third shell middle part 300-2 is provided with a third shell tail part 300-4, and the third shell middle part 300-2 and the third shell tail part 300-4 are respectively provided with a third shell rear upper part 300-3 and a third shell rear lower part 300-5;

[0092] The four corners of the bottom surface of the third shell 300, namely, the first corner 300-6, the second corner 300-7, the third corner 300-8, and the fourth corner 300-9, are designed with U-shaped grooves. When the first shell 100 and the second shell 200 are rotated to the limit folding position, the first shell left symmetrical part 100-9 and the first shell right symmetrical part 100-10 of the first shell, and the second shell left symmetrical part 200-9 and the second shell right symmetrical part 200-10 of the second shell can well cooperate with the U-shaped grooves of the first corner 300-6, the second corner 300-7, the third corner 300-8, and the fourth corner 300-9, so as to firmly lock the folding angle of the table board at a preset value, and the folding angle will not deviate due to external interference or vibration, thereby playing a stop position role.

[0093] One side 300-10 of the third shell is designed as a light and thin cover plate. Through the connection with the first shell 100, the second shell 200, and the cover plate one 900 and the cover plate two, a shielding system is formed. When the table board is in an open state, the cover plate one 900 and the cover plate two can hide the folding mechanism on the bottom surface, so that the surface of the table board or other products is more flat and more beautiful, and the product use experience and the aesthetic degree are greatly improved. When the table board is in a folded state, the components are closely connected by the stop of the U-shaped groove, and a stable overall structure is formed. The inner wall of the U-shaped groove is lined with a soft rubber pad, which can not only buffer the impact force during folding, but also fill the small gaps, so that the overall appearance is more flat. When the folding mechanism is completely folded, the middle cavity 300-11 reserves enough space to effectively prevent the first shell 100 and the second shell 200 from colliding with each other and interfering with each other

[0094] The pin 700 penetrates the torsion unit 800 and is installed at the position of the upper rear part 300-3 of the third shell. Through the matching of the overall device in the use process, the components of the overall device are matched and matched, and the coordination of the use of the overall device is strengthened.

[0095] The pin 700 is installed at the position of the upper rear part 300-3 of the third shell. The pin 700 penetrates the spring sheet of the torsion unit 800 and is in interference fit with the spring sheet. The function is to eliminate the small gap of the spring sheet in the shell 300, play a spring limiting and fixing role, and make the whole mechanism in a state of no shaking and abnormal sound

[0096] Further, the surface of one end of the shaft body one 500 is provided with a shaft body one knurling part 500-2, the surface of the other end of the shaft body one 500 is provided with a shaft body one guiding part 500-3, and the surface of the shaft body one 500 is provided with a shaft body one core 500-1 at the middle position.

[0097] Two of the check rings 400 are respectively installed on the surface of the shaft body one guide portion 500-3 and the shaft body one knurled portion 500-2, and the shaft body one core 500-1 penetrates through the inside of the second corner 300-7 and the third corner 300-8.

[0098] Further, the shaft body two 600 has a shaft body two knurled portion 600-2 on one end surface thereof, and has a shaft body two guide portion 600-3 on the other end surface thereof, and has a shaft body two core 600-1 arranged at the middle position of the surface thereof;

[0099] The other two check rings 400 are respectively installed on the surface of the shaft body two guide portion 600-3 and the shaft body two knurled portion 600-2, and the shaft body two core 600-1 penetrates through the inside of the first corner 300-6 and the fourth corner 300-9, which greatly strengthens the matching strength of the overall device during use, and avoids the asymmetric matching of the components of the overall device during use.

[0100] The matching between the first shell 100, the second shell 200 and the third shell 300 is achieved by the interference fit between the end portion shaft body one knurled portion 500-2 and the shaft body two knurled portion 600-2 and the first shell 100 and 200, and the shaft is fastened together by penetrating through the first shell 100-7 and the second shell 200-8, the third shell 300-2, the shaft body one 500 and the shaft body two 600, which forms the connection of the first shell 100 and the second shell 200 with the third shell 300, and the first shell 100 and the second shell 200 can rotate around the shaft 500 and the shaft 600, respectively;

[0101] The shaft body one guide portion 500-3 facilitates the penetration of the shaft through the torsion unit 800 and the first shell secondary screw hole two 100-7, the first shell symmetric hole 100-8 and the second shell symmetric hole 200-8, the second shell secondary screw hole two 200-6, the shaft body one core 500-1 is mainly matched with the torsion unit 800 to output a stable torsion value, the shaft body one knurled portion 500-2 is mainly the part fastened and connected with the first shell secondary screw hole two 100-6 and the second shell symmetric hole 200-8, which prevents the shaft from rotating relatively with the first shell 100 or the second shell 200 during connection and movement, at the same time, the shaft is also indirectly connected with the third shell 300, and the first shell 100 and the second shell 200 remain relatively integrated, and rotates around the center of the torsion unit 800 in the third shell 300, realizing the function of double-axis rotation;

[0102] The left and right structures of the spring sheet of the torsion unit 800 are different. One structure is fixed and supported, and the end faces of the upper and lower ends of the structure are matched with the shell. The lower end is a strong match, and the upper end is an auxiliary match. The other structure is elastic, and the upper end of the structure is connected with the structure of the fixed end spring sheet, and the lower half of the other end is in a disconnected state. When stressed, the released end deforms under stress, forming a spring structure that provides stable counter pressure to the overall structure. When the shaft has a tendency to rotate inside the spring, the fixed end and the elastic end jointly provide static friction force. When the rotation of the shaft is greater than the friction force, the shaft starts to rotate. Because the spring sheet has two different structures on both sides, when the rotation tendency of the shaft turns to the fixed structure side, the friction force received by the shaft increases. When the rotation tendency of the shaft turns to the variable end, the friction force received is smaller. Thus, different forces are formed in left and right rotation

[0103] The inner side surfaces of the support structure one 800-2, the support structure two 800-4, and the variable structure 800-9 are directly in contact with the shaft body one 500. When the shaft body one 500 has a movement tendency with the torsion system 800, the support structure one 800-2, the support structure two 800-4, and the variable structure 800-9 and the shaft body one 500 generate mutual friction force.

[0104] Further, the torsion unit 800 is internally provided with an internal slot 800-8, and the surface of the torsion unit 800 is respectively provided with the support structure one 800-2, the support structure two 800-4, and the variable structure 800-9.

[0105] The connection part of the support structure one 800-2 and the support structure two 800-4 is provided with an oil groove structure one 800-3, and the connection part of the support structure one 800-2 and the variable structure 800-9 is provided with an oil groove structure two 800-10.

[0106] The top of the variable structure 800-9 is provided with an upper matching end 800-1, and the end of the support structure two 800-4 is provided with a lower matching end 800-6. The surface of the lower matching end 800-6 is respectively provided with a bottom slot 800-5 on the left and right sides, and the upper part of the bottom slot 800-5 is provided with a notch 800-7.

[0107] The torque unit 800 is assembled with the third housing 300. The support structure 800-2 and the notch 800-7 are fitted with the head part 300-1 and the upper rear part 300-3 of the third housing and are fixed to each other. The shaft 500 and the shaft 600 are fixed on the first housing 100 and the second housing 200. The fixing is achieved by the knurled part 500-2 of the shaft 500-2 and the knurled part 600-2 of the shaft 600-2 and the space between the secondary threaded hole 100-6 of the first housing and the main threaded hole 200-1 of the second housing. The knurled part 500-2 and the knurled part 600-2 of the shaft 500-2 are designed with a knurled shape. The shaft 500 forms a fixed fit relationship with the first housing 100 and the third housing 300 and maintains a constant relative position during movement and rest.

[0108] The torque unit 800 and the third housing 300 are assembled together. The protruding part of the torque unit 800 supports the notch 800-7 of the support structure 800-2 and the third housing head 300-1 and the rear upper part 300-3 of the housing are fitted together and fixed to each other.

[0109] The upper mating end 800-1 and the first part 300-1 of the third housing are mated together, the lower mating end 800-6 and the last part 300-4 of the third housing are mated together, and the torque unit 800 is fixed together with the third housing 300.

[0110] The two fixed ends of the spring sheet 800 are composed of the upper and lower protruding parts, the upper mating end 800-1 and the lower mating end 800-6. The two fixed ends utilize their protruding structure to form a mutual cooperation with the first part 300-1 and the last part 300-4 of the third housing, so that the spring sheet 800 and the third housing 300 are fixed together and remain relatively stationary.

[0111] The inner surfaces of support structure 800-2, support structure 800-4, and variable structure 800-9 are in contact with shaft 500.

[0112] Oil groove structure 2 800-10 is located between support structure 1 800-2 and variable structure 800-9, and oil groove structure 1 800-3 is located between support structure 1 800-2 and support structure 2 800-4. Their main functions are to increase elastic deformation and store lubricating oil, increase the lubrication effect between the spring plate and the shaft, reduce wear, and increase service life.

[0113] The torsion system 800 is a strong support structure, which is a concentric structure composed of support structure one 800-2 and support structure two 800-4, and is composed of the right half circle from the upper matching end 800-1 to the lower matching end 800-6. The variable structure of the torsion system 800 is composed of the left half circle from the upper matching end 800-1 to the lower matching end 800-6. The notch 800-7 mainly functions to cause the variable structure 800-9 to elastically deform under the action of a lateral external force, thereby providing a stable pressure for the shaft body one 500 and the shaft body two 600.

[0114] The shaft body two core 600-1 penetrates the inside of the torsion unit 800.

[0115] Further, the surface of the cover plate one 900 is provided with a cover plate one large accessory 900-1 and a cover plate one small accessory 900-2, which can enhance the flexible control ability of the overall device and thereby reduce the probability of failure of the overall device during use.

[0116] Further, the surface of the cover plate two 1000 is provided with a cover plate two large accessory 1000-1 and a cover plate two small accessory 1000-2.

[0117] The first shell 100 penetrates through the first shell main threaded hole one 100-1 and the first shell auxiliary threaded hole one 100-5, and is fixed on the cover plate two large accessory 1000-1 and the cover plate two small accessory 1000-2.

[0118] The second shell 200 penetrates through the second shell main threaded hole one 200-1 and the second shell auxiliary threaded hole one 200-5, and is installed at the cover plate two large accessory 1000-1 and the cover plate two small accessory 1000-2.

[0119] The first shell 100 penetrates through the threaded hole first shell main threaded hole one 100-1 and the first shell auxiliary threaded hole one 100-5 by means of standard screws, and is stably fixed on the cover plate two large accessory 1000-1 and the cover plate two small accessory 1000-2. The second shell 200 penetrates through the threaded hole second shell main threaded hole one 200-1 and the second shell auxiliary threaded hole one 200-5 by means of standard screws, and is firmly installed at the cover plate one large accessory 900-1 and the cover plate one small accessory 900-2. When the cover plate one 900 bears an external force, it can smoothly drive the shell 100 and the shell 200 to rotate around the shaft in the third shell 300, achieving a double-axis rotation effect, and thereby realizing a bidirectional folding function.

[0120] First, the first shell 100 and the second shell 200 of the two sides of the first shell main threaded hole one 100-1, the first shell auxiliary threaded hole one 100-5, the second shell main threaded hole one 200-1, the second shell auxiliary threaded hole one 200-5 are punched on one side of the plate, and the standard screw is used for connection. After the connection of the two sides is completed, the cover plate is rotated, the first working state is that the two sides of the shell are rotated to make the torsion unit work, and then the torsion is rotated by 90 degrees to the outside to realize the working mode one flat state. In this mode, the internal mechanism can be well hidden. The second working mode is that the torsion unit is worked by rotating one side of the shell to 90 degrees, and the other side is not rotated to realize the working mode two single folding state. The third working mode is that the torsion unit is worked by rotating the two sides of the shell, and then the torsion is rotated by 90 degrees to the inside to realize the working mode three closed state.

[0121] The light and thin plate 300-10 is connected through the first shell 100, the second shell 200, the cover plate one 900 and the cover plate two 1000 to form a shielding system.

[0122] When the table plate is in the open state, the cover plate one 900 and the cover plate two 1000 can hide the folding mechanism at the bottom, so that the surface of the table plate or other products is more flat and more beautiful, greatly improving the product use experience and the degree of beauty. When the table plate is in the folding state, the components are closely connected by the stop of the U-shaped groove to form a stable overall structure. The inner wall of the U-shaped groove is lined with soft rubber pads, which can not only buffer the impact force during folding, but also fill the small gaps to make the overall appearance more flat. When the folding mechanism is completely folded, the middle cavity 300-11 reserves enough space to effectively prevent the first shell 100 and the second shell 200 from colliding with each other and interfering with each other.

[0123] The use method of the embodiment is: when in use, please refer to Figures 1-15, the first shell symmetric hole 100-8 and the first shell left side symmetric piece 100-9 and the second shell symmetric hole 200-8 and the second shell left side symmetric piece 200-9 can be shaped as a circular arc, a wave or a plane, etc. according to needs, which aims to optimize the cooperation with the third shell 300, and build a set of limiting system, so that the table board can realize rotation from zero to one hundred and eighty degrees and larger angle rotation, the first shell 100 passes through the threaded hole first shell main threaded hole one 100-1 and the first shell auxiliary threaded hole one 100-5 by means of standard screws, and is stably fixed on the cover plate two large accessories 1000-1 and the cover plate two small accessories 1000-2, the second shell 200 passes through the threaded hole second shell main threaded hole one 200-1 and the second shell auxiliary threaded hole one 200-5 by means of standard screws, and is firmly installed at the cover plate one large accessory 900-1 and the cover plate one small accessory 900-2, when the cover plate one 900 bears external force, it can smoothly drive the shell 100 and the shell 200 to rotate around the shaft in the third shell 300, achieve the effect of double shaft rotation, and realize the function of bidirectional folding.

[0124] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A hidden bidirectional folding mechanism, comprising a first housing (100), a second housing (200), a third housing (300), four check rings (400), a shaft body one (500), a shaft body two (600) and a torsion unit (800), characterized in that: The first shell (100) and the second shell (200) are C-shaped in cross section; One end of the shaft body one (500) is sequentially penetrated by the third shell (300), the two stop rings (400) and the torsion unit (800), and the shaft body one (500) is installed in the interior of the first shell (100); One end of the shaft body two (600) is sequentially penetrated by the third shell (300), the two stop rings (400) and the torsion unit (800), and the shaft body two (600) is installed in the interior of the second shell (200); The interior of the third shell (300) is installed with the pin (700), the pin (700) penetrates the torsion unit (800) and is in interference fit with the same; The first shell (100), the second shell (200) and the third shell (300) are jointly installed with the cover plate one (900) and the cover plate two (1000) on one side surface; The stop ring (400) comprises an outer ring (400-1) and an inner ring (400-2).

2. A concealed bi-directional folding mechanism according to claim 1, wherein: The surface of the first shell (100) is installed with the first shell rod body (100-11), the left side of the first shell rod body (100-11) is fixedly connected with the first shell left side symmetry piece (100-9), and the right side of the first shell rod body (100-11) is fixedly connected with the first shell right side symmetry piece (100-10); The left side surface of the first shell left side symmetry piece (100-9) is respectively provided with a first shell main thread hole one (100-1), a first shell main thread hole two (100-2), a first shell main thread groove (100-3) and a first shell main side hole (100-4); The surface of the first shell right side symmetry piece (100-10) is respectively provided with a first shell auxiliary thread hole one (100-5), a first shell auxiliary thread hole two (100-6), a first shell auxiliary thread hole two (100-6) and a first shell symmetry hole (100-8).

3. A concealed bi-directional folding mechanism according to claim 2, wherein: The surface of the second shell (200) is fixedly connected with the second shell rod body (200-11), the left side of the second shell rod body (200-11) is fixedly connected with the second shell left side symmetry piece (200-9), and the right side of the second shell rod body (200-11) is fixedly connected with the second shell right side symmetry piece (200-10); The surface of the second shell left side symmetry piece (200-9) is respectively provided with a second shell main thread hole one (200-1), a second shell main thread hole two (200-2), a second shell main thread groove (200-3) and a second shell main side hole (200-4); The surface of the second shell right side symmetry piece (200-10) is respectively provided with a second shell auxiliary thread hole one (200-5), a second shell auxiliary thread hole two (200-6), a second shell auxiliary thread hole two (200-6) and a second shell symmetry hole (200-8).

4. A concealed bi-directional folding mechanism according to claim 3, wherein: The third shell (300) comprises a light plate (300-10), and an intermediate cavity (300-11) is formed in the surface of the light plate (300-10). The upper end of the middle cavity (300-11) is provided with a second corner (300-7) and a third corner (300-11), and the lower end of the middle cavity (300-11) is provided with a first corner (300-6) and a fourth corner (300-9); The left and right sides of the light and thin plate (300-10) are respectively provided with a third shell middle part (300-2), the inner side of the third shell middle part (300-2) is provided with a third shell head part (300-1), the outer side of the third shell middle part (300-2) is provided with a third shell tail part (300-4), and the third shell middle part (300-2) and the third shell tail part (300-4) are respectively provided with a third shell rear upper part (300-3) and a third shell rear lower part (300-5); The pin (700) penetrates the torsion unit (800) and is installed at the position of the third shell rear upper part (300-3).

5. A concealed bi-directional folding mechanism according to claim 4, wherein: One end surface of the shaft body one (500) is provided with a shaft body one knurling part (500-2), the other end surface of the shaft body one (500) is provided with a shaft body one guiding part (500-3), and the surface middle position of the shaft body one (500) is provided with a shaft body one core (500-1); Two of the retaining rings (400) are respectively installed on the surfaces of the shaft body one guiding part (500-3) and the shaft body one knurling part (500-2), and the shaft body one core (500-1) penetrates the interiors of the second corner (300-7) and the third corner (300-8).

6. A concealed bi-directional folding mechanism according to claim 5, wherein: One end surface of the shaft body two (600) is provided with a shaft body two knurling part (600-2), the other end surface of the shaft body two (600) is provided with a shaft body two guiding part (600-3), and the surface middle position of the shaft body two (600) is provided with a shaft body two core (600-1); The other two retaining rings (400) are respectively installed on the surfaces of the shaft body two guiding part (600-3) and the shaft body two knurling part (600-2), and the shaft body two core (600-1) penetrates the interiors of the first corner (300-6) and the fourth corner (300-9).

7. A concealed bi-directional folding mechanism according to claim 6, wherein: The interior of the torsion unit (800) is provided with an internal missing groove (800-8), and the surface of the torsion unit (800) is respectively provided with a supporting structure one (800-2), a supporting structure two (800-4) and a variable structure (800-9); The connecting part of the supporting structure one (800-2) and the supporting structure two (800-4) is provided with an oil groove structure one (800-3), and the connecting part of the supporting structure one (800-2) and the variable structure (800-9) is provided with an oil groove structure two (800-10); The top of the variable structure (800-9) is provided with an upper matching end (800-1), the tail end of the supporting structure two (800-4) is provided with a lower matching end (800-6), and the left and right sides of the surface of the lower matching end (800-6) are respectively provided with a bottom slot (800-5), and the top of the bottom slot (800-5) is provided with a notch (800-7); The cooperation between the torsion unit (800) and the third shell (300) is achieved by the cooperation between the protruding part support structure one (800-2) on the torsion unit (800) and the third shell head (300-1) and the third shell rear upper part (300-3) on the shell; The upper cooperation end (800-1) and the third shell head (300-1) are cooperated with each other, the lower cooperation end (800-6) and the third shell tail (300-4) are cooperated with each other, and the torsion unit (800) and the third shell (300) are fixed together; The support structure one (800-2) and the support structure two (800-4), and the inner side of the variable structure (800-9) are in contact with the shaft body one (500); The oil groove structure two (800-10) is located between the support structure one (800-2) and the variable structure (800-9), and the oil groove structure one (800-3) is located between the support structure one (800-2) and the support structure two (800-4); The shaft body two core (600-1) penetrates the inside of the torsion unit (800).

8. A concealed bi-directional folding mechanism according to claim 7, wherein: The surface of the cover plate one (900) is provided with a cover plate one large accessory (900-1) and a cover plate one small accessory (900-2).

9. A concealed bi-directional folding mechanism according to claim 8, wherein: The surface of the cover plate two (1000) is provided with a cover plate two large accessory (1000-1) and a cover plate two small accessory (1000-2); The first shell (100) penetrates through the first shell main threaded hole one (100-1) and the first shell auxiliary threaded hole one (100-5), and is fixed on the cover plate two large accessory (1000-1) and the cover plate two small accessory (1000-2); The second shell (200) penetrates through the second shell main threaded hole one (200-1) and the second shell auxiliary threaded hole one (200-5), and is installed at the cover plate two large accessory (1000-1) and the cover plate two small accessory (1000-2); The light and thin plate (300-10) forms a shielding system through the connection of the first shell (100), the second shell (200), and the cover plate one (900) and the cover plate two (1000).

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