Upturning door hinge and design method thereof

Abstract

The invention relates to a furniture connecting part, in particular to an upturning door hinge which comprises a connecting rod assembly, a driving module and a fixing plate, the connecting rod assembly comprises an input connecting rod, a fixed-length connecting rod, an adjusting connecting rod, a first supporting connecting rod, a second supporting connecting rod, a third supporting connecting rod and an output connecting rod, and the input connecting rod is movably hinged to the driving module, the fixing plate and the fixed-length connecting rod; the adjusting connecting rod is movably hinged to the fixing plate and the fixed-length connecting rod, the first supporting connecting rod is movably hinged to the adjusting connecting rod, the second supporting connecting rod and the output connecting rod, and the third supporting connecting rod is movably hinged to the second supporting connecting rod and the output connecting rod. The tilt-up door hinge can achieve balance of supporting force and closing force, and door body hovering and rapid door closing are both considered.

Description

Technical Field

[0001] The invention relates to the field of furniture hinges, in particular to an upturned door hinge and a design method thereof. Background Art

[0002] The flip door hinge is a commonly used furniture connection component, which is mainly used in occasions such as wall cabinets and wall cabinets where the cabinet door needs to be opened upward. Since the cabinet door itself has a certain weight, in order to prevent the cabinet door from closing due to gravity after opening, the flip door hinge usually needs to apply a certain pre-tightening force to the hinge after the cabinet door is opened. In the current flip door hinge design, it is necessary to ensure that the hinge can hover arbitrarily when the angle between the door body and the vertical plane is greater than or equal to 45° to prevent the door body from pinching the hand.

[0003] However, the structure of adding preload force to the hinge will cause unsolvable technical contradictions. First, the size and weight of the door body are inconsistent, and the upper and lower limits of the load after the hinge is connected to the door body are also different. Especially for lighter door bodies, as the door body rotates, its center of gravity continues to move diagonally below the hinge. When the angle between the door body and the vertical plane reaches 25°, the closing force of the door is large, so the hinge cannot meet the balance between the support force of the upward flip and hovering and the closing force of the door closing quickly. Secondly, in the current design process of the upward flip door hinge, the support force of the hovering is ideally the largest when the angle between the door body and the vertical plane is equal to 45°, but when the door body is closed, because the center of gravity of the door body continues to make a circular motion diagonally below the hinge, under the action of the same damping structure, the closing force of the door will be less than its ideal value, that is, the door body cannot be closed quickly. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a hinge for an upward-flipping door which can achieve a balance between a supporting force and a closing force and can allow for both door body suspension and rapid door closing.

[0005] Another object of the present invention is to overcome the deficiencies of the prior art and provide a design method for an upturned door hinge.

[0006] The present invention provides an upward flip door hinge, which includes a connecting rod assembly, a driving module, and a fixed plate. The connecting rod assembly includes an input connecting rod, a fixed-length connecting rod, an adjusting connecting rod, a first supporting connecting rod, a second supporting connecting rod, a third supporting connecting rod and an output connecting rod. The input connecting rod is movably hinged to the driving module, the fixed plate and the fixed-length connecting rod respectively, the adjusting connecting rod is movably hinged to the fixed plate and the fixed-length connecting rod respectively, the first supporting connecting rod is movably hinged to the adjusting connecting rod, the second supporting connecting rod and the output connecting rod respectively, and the third supporting connecting rod is movably hinged to the second supporting connecting rod and the output connecting rod respectively.

[0007] By optimizing the above structure, an adjusting gear set, a transmission shaft and a spring slider are provided on the input connecting rod. The adjusting gear set can be meshed and transmitted on the input connecting rod. The transmission shaft is fixed on the adjusting gear set. The spring slider is threadedly connected to the transmission shaft.

[0008] By optimizing the above structure, a damper stopper riveted to the adjusting connecting rod is provided on the adjusting connecting rod.

[0009] By optimizing the above structure, the drive module includes an upper spring sleeve and a lower spring sleeve that are sleeved and connected, a spring arranged between the upper spring sleeve and the lower spring sleeve, and a guide column connected between the upper spring sleeve and the lower spring sleeve. The upper spring sleeve is connected to the input connecting rod, and the lower spring sleeve is riveted to the fixing plate.

[0010] By optimizing the above structure, a first damping adjustment module and a second damping adjustment module which are riveted to the fixing plate respectively are provided in the hinge of the upward flip door.

[0011] By further improving the above structure, the first damping adjustment module includes a first damping mounting seat riveted on the fixing plate and a first damping member arranged in the first damping mounting seat, and the first damping member corresponds to the position of the adjustment connecting rod.

[0012] By further improving the above structure, the second damping adjustment module includes a second damping mounting seat riveted on the fixing plate and a second damping member arranged in the second damping mounting seat, and the second damping member corresponds to the position of the adjustment connecting rod.

[0013] The present invention provides a design method for the above-mentioned flip door hinge, comprising the following steps:

[0014] 1. Set the parameters required for design

[0015] Point a: hinge point between driving module and fixed plate;

[0016] Point b: the hinge point between the input link and the drive module;

[0017] Point c: the hinge point between the input connecting rod and the fixed plate;

[0018] Point d: hinge point between fixed-length connecting rod and input connecting rod;

[0019] Point e: the hinge point between the adjusting connecting rod and the fixed-length connecting rod;

[0020] Point f: the hinge point between the adjusting connecting rod and the fixed plate;

[0021] Point g: the hinge point between the first supporting link and the adjusting link;

[0022] Point h: the hinge point between the second supporting link and the first supporting link;

[0023] Point i: hinge point between the second supporting link and the fixed plate;

[0024] Point j: the hinge point between the third supporting link and the second supporting link;

[0025] Point k: the hinge point between the output link and the third supporting link;

[0026] Point 1: hinge point between output link and first supporting link;

[0027] R: the distance between points e and f;

[0028] θ: the angle between line segment ef and the X-axis;

[0029] L: the straight line where the line segment de is located;

[0030] M: the straight line where the line segment cd lies;

[0031] R': distance between points c and d;

[0032] β: the angle between line segment cd and the Y axis;

[0033] L1: The projection length of line segment cf in the X-axis direction;

[0034] L2: The projection length of line segment cf in the Y-axis direction;

[0035] N: the straight line where the line segment oe lies;

[0036] P: the ideal point of fixed point e at 45° instantaneous state;

[0037] P': the ideal point of fixed point d at 45° instantaneous state;

[0038] L': the straight line where the line segment PP' is located;

[0039] θ': the angle between line segment Pf and the X-axis;

[0040] β': the angle between the line segment cd and the Y-axis direction;

[0041] M: the straight line where the line segment pf lies;

[0042] P α : The ideal point of fixed point e in the instantaneous state of 25°;

[0043] P α ': the ideal point of fixed point d in the instantaneous state of 25°;

[0044] L α ': Line segment P α P α 'The straight line where it is located;

[0045] 2. Constructing the design coordinate system

[0046] Take f as the origin and establish the OXY coordinate system, where the coordinates of point f are (0,0), and the polar coordinates of point e are (R,θ); the distance between point e and point f is set to R, and the angle between line segment ef and the X-axis is θ; point d and point e are connected as de, and the line where de is located is set to L; point c and point d are connected as cd, and the line where cd is located is set to M; cd is set to R', and the angle between cd and the Y-axis direction is set to β; point c and point f are connected as cf, and the projection length of cf in the X-axis direction is set to L1, and the projection length of cf in the Y-axis direction is set to L2;

[0047] 3. Establish the state model when the hinge is 45°

[0048] 1) Solve the function equation of the ideal fixed-length link of the hinge 45°. The equation of the straight line N where the line segment oe lies is: Y = K*X, and K = tanθ (θ∈(0,π / 2)), so the straight line equation of N is: Y = (tanθ)*X. When θ = 45°, the angle β is a constant;

[0049] 2) Establish constraint conditions, set the ideal point of fixed point e in the instantaneous state of 45° as P, the ideal point of d as P', the connection of point P and point P' as PP', set the straight line where PP' is located as L', connect the origin f and the moving point P as Pf, set the angle between line segment Pf and X-axis as θ', the angle between cd and Y-axis direction as β', set the straight line where Pf is located as M, and L'⊥M. Under this constraint condition, the equation of straight line L' is: Y = K'*X+B, where B∈(-∞, 0)∪(0, +∞), and K*K'=-1, and point P is on straight line L', the coordinates of point P are (R*cosθ', R*sinθ'), so the equation of straight line L' is: Y = -X / tanθ'+R / sinθ'(θ'∈(θ, π / 2));

[0050] 3) Solve the relationship between the angles of β' and θ' under the ideal condition of hinge 45°. According to the analytical method, the coordinates of point P' are (L1-R'*sinβ', L2-R'*cosβ'), and P' is on the straight line L, so L2-R'*cosβ'=(R'*sinβ'-L1) / tanθ'+R / sinθ', and rearrange it to get R'*sin(θ'+β')-L1*cosθ'-L2*sinθ'+R=0, where L1, L2 and R' are constants. Further, we have: β'=arcsin((L1*cosθ'+L2*sinθ') / R'-R)-θ', denoted as β'=ε(θ',R), where θ'∈(θ,π / 2), β'∈(0,π / 2);

[0051] 4. Establish the state model when the hinge is 25°

[0052] 1) Solve the function equation of the 25° ideal fixed-length connecting rod, assuming that the ideal point of the fixed point e at the 25° instantaneous state is P α , the ideal point of d is P α ',P α Point and P α 'Point connection is P α P α ', let P α P α 'The straight line is L α ', define L α ' is the straight line where the fixed-length connecting rod is located under the ideal condition of 25°. The straight line equation is set as: (Y-Y1) / (Y2-Y1)=(X-X1) / (X2-X1), and the coordinates of the point P' passing through are (L1-R'*sinβ', L2-R'*cosβ'), and the coordinates of point P are (R*cosθ', R*sinθ'). Substituting into the solution, we can get L α The equation of the straight line is: (L2-R'*cosβ'-R*sinθ')*X+(R'*sinβ'-L

[0053] 1)*Y+R*(L1*sinθ'-L2*cosθ')+R*R'*cos(θ'+β')+R 2 *sinθ'*cosθ'=0;

[0054] 2) Establish constraint conditions. According to the formula M=F*R, the distance from point F to the fixed-length connecting rod should be less than R. Therefore, the ideal distance value is set to Q*R, Q∈(0,1);

[0055] 3) Solve the relationship between the angles β' and θ' under the ideal condition of 25°. The distance formula from the point (X0, Y0) to the straight line A*X+B*Y+C=0 in the plane rectangular coordinate system is: D=(|AX0+BY0+C|) / (A 2 +B 2 )^ 1 / 2 (where A and B are not zero at the same time);

[0056] 5. Obtain the optimal model by the relationship between β' and θ' angles

[0057] A state compensator is added to the relationship between the angles of β' and θ', and the 45° and 25° models are sampled respectively. The 45° sampling interval is defined as [35°, 50°), the sampling frequency is 10', and the sample size N is 95. The 25° sampling interval is defined as [20°, 35°), the sampling length is 10', and the sample size N is 95. Then, by Taylor's theorem:

[0058] The remainder (ξ is between x0 and x), so:

[0059] as well as

[0060] The trigonometric functions in the relationship between the angles β' and θ' of 45° and 25° are approximated by polynomials, that is, sinθ'=θ'-(θ') 3 / 3! +(θ') 5 / 5! , cos

[0061] θ'=1-(θ') 2 / 2! +(θ') 4 / 4! , cos(θ'+β')=1-(θ'+β') 2 / 2! +(θ'+β') 4 / 4! ,

[0062] cosβ'=1-(β') 2 / 2! +(β') 4 / 4! , sinβ'=β'-(β') 3 / 3! +(β') 5 / 5! Then substitute the 45° sampling value and the 25° sampling value into the 45° and 25° models respectively to obtain the corresponding correction values ​​δ and η, and then use the correction value δ k (k = 1 to N) and η k (k=1~N) through y=a0+a1x+a2x 2 +a3x 3 +a4x 4 +a5x 5 The state compensators δ(θ', R) and η(θ', R) can be obtained by fitting the fifth-order polynomial. The final model expression of the modified 45° is: β'=ε(θ', R)+δ(θ', R), and the final model expression of the modified 25° is: β'=τ(θ', R)+η(θ', R);

[0063] 6. Find the polar coordinates of the moving point and determine the hole position

[0064] At the same time, the ideal state models of hinge 25° and hinge 45° are gradually approached to 35°, and: The solution can get R, and then the R value is substituted into the final models of 45° and 25° respectively, that is, for the 45° model, β'=ε(θ')+δ(θ'), and for the 25° model, β'=τ(θ')+η(θ'). The two equations can be combined to get θ', so the polar coordinates of the moving point P are (R, θ'), and finally the position coordinates of the moving point P in the established OXY coordinate system are determined: P(R*cosθ',R*sinθ').

[0065] The beneficial effects of the flip door hinge and the design method thereof of the present invention are:

[0066] 1. The flip door hinge of the present invention adopts a connecting rod structure with three supporting mechanisms. The three supporting mechanisms can form a multi-directional support effect on the movement of the connecting rod when the hinge is running, and play an auxiliary or driving role when the hinge is suspended and the door is closed, thereby improving the stability and reliability of the hinge's suspension and door closing.

[0067] Second, in the design method of the flip door hinge of the present invention, a state compensator is added. The state compensation mechanism similar to the upper and lower tolerance principle of metal processing is used to make the hinge at the design point P and P α From a precise point value to a dynamic point that can shake within a small range. The state compensation mechanism uses the states of hinge 25° and hinge 45° to make the dynamic points P and P α Under the premise that the hinge can work normally at the above angle, it can increase the closing force of the hinge when closing the door and improve the supporting force when the hinge is suspended. This state compensation mechanism can completely overcome the defect that the closing force and supporting force cannot be taken into account under the same damping structure when designing the hinge, thereby making the hinge design more flexible and its work more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 This is a schematic diagram of the hinge structure of the flip door of the present invention;

[0069] Figure 2 It is a schematic diagram of the connecting rod assembly structure of the present invention;

[0070] Figure 3 It is a schematic diagram of the assembly of the damper block of the present invention;

[0071] Figure 4 It is an assembly cross-sectional view of the adjusting gear set, the transmission shaft and the spring slider of the present invention;

[0072] Figure 5 This is a schematic diagram of the locations and naming of hinge points of the present invention;

[0073] Figure 6 It is a schematic diagram of setting the hinge coordinate system of the present invention;

[0074] Figure 7 This is a schematic diagram of the coordinate system setting when the hinge is 45°;

[0075] Figure 8 This is a schematic diagram of the coordinate system setting when the hinge is 25°;

[0076] Fig. 9 It is a schematic diagram for determining the hole position of the hinge connecting rod of the present invention.

[0077] The markings in the figure are as follows: connecting rod assembly 1, input connecting rod 11, fixed-length connecting rod 12, adjusting connecting rod 13, first supporting connecting rod 14, second supporting connecting rod 15, third supporting connecting rod 16, output connecting rod 17, damper stopper 18, adjusting gear set 19, transmission shaft 110, spring slider 111, driving module 2, upper spring sleeve 21, lower spring sleeve 22, spring 23, guide column 24, fixing plate 3, first damping adjusting module 4, first damping mounting seat 41, first damping member 42, second damping adjusting module 5, second damping mounting seat 51, second damping member 52. DETAILED DESCRIPTION

[0078] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The following embodiments are one or several examples that can realize the new technical solutions of the present utility model, obtain corresponding technical effects, and solve corresponding technical problems, and do not mean that the protection scope of the technical solutions only includes the following embodiments.

[0079] according to Figures 1 to 4 As shown, the hinge of the flip door of the present invention mainly includes a connecting rod assembly 1, a driving module 2 and a fixed plate 3. The connecting rod assembly 1 includes an input connecting rod 11, a fixed-length connecting rod 12, an adjusting connecting rod 13, a first supporting connecting rod 14, a second supporting connecting rod 15, a third supporting connecting rod 16 and an output connecting rod 17. The input connecting rod 11 is respectively hinged with the driving module 2, the fixed plate 3 and the fixed-length connecting rod 12, the adjusting connecting rod 13 is respectively hinged with the fixed plate 3 and the fixed-length connecting rod 12, the first supporting connecting rod 14 is respectively hinged with the adjusting connecting rod 13, the second supporting connecting rod 15 and the output connecting rod 17, and the third supporting connecting rod 16 is respectively hinged with the second supporting connecting rod 15 and the output connecting rod 17. The fixed plate 3 and the output connecting rod 17 are respectively fixed to the cabinet body and the door body, and drive the driving module 2 to work under the movement of the door body, so as to realize the buffered closing of the door body and hovering at a certain opening angle.

[0080] In one embodiment of the present invention, an adjusting gear set 19, a transmission shaft 110 and a spring slider 111 are also provided on the input connecting rod 11. The adjusting gear set 19 is connected to the input connecting rod 11 and can be meshed and driven on the input connecting rod 11. The transmission shaft 110 is fixed on the adjusting gear set 19, and the spring slider 111 is threadedly connected to the transmission shaft 110. By adjusting the adjusting gear set 19, the relative position of the spring slider 111 on the transmission shaft 110 can be adjusted, thereby adjusting the compression length of the driving module 2 to achieve the adjustment of the support force of the hinge of the flip door.

[0081] In one embodiment of the present invention, a damper stopper 18 is further provided on the adjusting link 13. The damper stopper 18 is riveted to the adjusting link 13 and can move synchronously with the movement of the adjusting link 13.

[0082] In one embodiment of the present invention, the driving module 2 includes an upper spring sleeve 21, a lower spring sleeve 22, a spring 23 and a guide column 24. The upper spring sleeve 21 is connected to the input connecting rod 11, and the lower spring sleeve 22 is riveted to the fixing plate 3, and the two are fitted together and can move back and forth between each other. The spring 23 is arranged between the upper spring sleeve 21 and the lower spring sleeve 22, and applies an elastic restoring force to both when it is stretched or compressed. The guide column 24 is also located between the upper spring sleeve 21 and the lower spring sleeve 22, and is connected to the two to form a guiding effect on the mutual movement between the upper spring sleeve 21 and the lower spring sleeve 22, so as to avoid the spring 23 being subjected to radial stress and causing the upper spring sleeve 21 and the lower spring sleeve 22 to be stuck.

[0083] In one embodiment of the present invention, the flip door hinge further comprises a first damping adjustment module 4 and a second damping adjustment module 5. The first damping adjustment module 4 and the second damping adjustment module 5 are riveted together with the fixing plate 3 respectively to apply a buffering force when the hinge moves.

[0084] In another embodiment, the first damping adjustment module 4 includes a first damping mounting seat 41 and a first damping member 42. The first damping mounting seat 41 is located on the fixing plate 3 and riveted thereto. The first damping member 42 is located in the first damping mounting seat 41 and corresponds to the position of the adjustment link 13. In this embodiment, the first damping member 42 can press against the damper stopper 18 when the hinge moves to achieve positioning between it and the adjustment link 13.

[0085] In another embodiment, the second damping adjustment module 5 includes a second damping mounting seat 51 and a second damping member 52. The second damping mounting seat 51 is located on the fixing plate 3 and riveted thereto. The second damping member 52 is located in the second damping mounting seat 51 and corresponds to the position of the adjustment link 13. In this embodiment, the second damping member 52 can be pressed against the damper stopper 18 when the hinge moves to achieve positioning between it and the adjustment link 13.

[0086] according to Figures 5 to 9 As shown, the design method of the flip door hinge of the present invention comprises the following steps:

[0087] 1. Set the parameters required for design

[0088] Point a: the hinge point between the driving module 2 and the fixed plate 3;

[0089] Point b: the hinge point between the input link 11 and the drive module 2;

[0090] Point c: the hinge point between the input connecting rod 11 and the fixed plate 3;

[0091] Point d: hinge point between the fixed-length connecting rod 12 and the input connecting rod 11;

[0092] Point e: the hinge point between the adjusting connecting rod 13 and the fixed-length connecting rod 12;

[0093] Point f: the hinge point between the adjusting connecting rod 13 and the fixing plate 3;

[0094] Point g: the hinge point between the first supporting link 14 and the adjusting link 13;

[0095] Point h: the hinge point between the second supporting link 15 and the first supporting link 14;

[0096] Point i: the hinge point between the second supporting link 15 and the fixed plate 3;

[0097] Point j: the hinge point between the third supporting link 16 and the second supporting link 15;

[0098] Point k: the hinge point between the output link 17 and the third supporting link 16;

[0099] Point 1: The hinge point between the output link 17 and the first support link 14;

[0100] R: the distance between points e and f;

[0101] θ: the angle between line segment ef and the X-axis;

[0102] L: the straight line where the line segment de is located;

[0103] M: the straight line where the line segment cd lies;

[0104] R': distance between points c and d;

[0105] β: the angle between line segment cd and the Y axis;

[0106] L1: The projection length of line segment cf in the X-axis direction;

[0107] L2: The projection length of line segment cf in the Y-axis direction;

[0108] N: the straight line where the line segment oe lies;

[0109] P: the ideal point of fixed point e at 45° instantaneous state;

[0110] P': the ideal point of fixed point d at 45° instantaneous state;

[0111] L': the straight line where the line segment PP' is located;

[0112] θ': the angle between line segment Pf and the X-axis;

[0113] β': the angle between the line segment cd and the Y-axis direction;

[0114] M: the straight line where the line segment pf lies;

[0115] P α : The ideal point of fixed point e in the instantaneous state of 25°;

[0116] P α ': the ideal point of fixed point d in the instantaneous state of 25°;

[0117] L α ': Line segment P α P α 'The straight line where it is located;

[0118] 2. Constructing the design coordinate system

[0119] Take f as the origin and establish the OXY coordinate system, where the coordinates of point f are (0,0), and the polar coordinates of point e are (R,θ); the distance between point e and point f is set to R, and the angle between line segment ef and the X-axis is θ; point d and point e are connected as de, and the line where de is located is set to L; point c and point d are connected as cd, and the line where cd is located is set to M; cd is set to R', and the angle between cd and the Y-axis direction is set to β; point c and point f are connected as cf, and the projection length of cf in the X-axis direction is set to L1, and the projection length of cf in the Y-axis direction is set to L2;

[0120] 3. Establish the state model when the hinge is 45°

[0121] 1) Solve the function equation of the ideal fixed-length link 12 of the hinge 45°. The equation of the straight line N where the line segment oe lies is: Y = K*X, and K = tanθ (θ∈(0,π / 2)), so the straight line equation of N is: Y = tanθ*X. When θ = 45°, the angle β is a constant;

[0122] 2) Establish constraint conditions, set the ideal point of fixed point e at 45° instantaneous state as P, the ideal point of d as P', the connection of point P and point P' as PP', set the straight line where PP' is located as L', connect the origin f and the moving point P as Pf, set the angle between line segment Pf and X-axis as θ', the angle between cd and Y-axis direction as β', set the straight line where Pf is located as M, and L'⊥M. Under this constraint condition, the equation of straight line L' is: Y = K'*X+B (B is a real number not equal to 0), and K*K' = -1, and point P is on straight line L', the coordinates of point P are (R*cosθ', R*sinθ'), so the equation of straight line L' is: Y = -X / tanθ'+R / sinθ'(θ'∈(θ,π / 2));

[0123] 3) Solve the relationship between the angles of β' and θ' under the ideal condition of hinge 45°. According to the analytical method, the coordinates of point P' are (L1-R'*sinβ', L2-R'*cosβ'), and P' is on the straight line L, so L2-R'*cosβ'=(R'*sinβ'-L1) / tanθ'+R / sinθ', and rearrange it to get R'*sin(θ'+β')-L1*cosθ'-L2*sinθ'+R=0, where L1, L2 and R' are constants. Further, we have: β'=arcsin((L1*cosθ'+L2*sinθ') / R'-R)-θ', denoted as β'=ε(θ',R), where θ'∈(θ,π / 2), β'∈(0,π / 2);

[0124] 4. Establish the state model when the hinge is 25°

[0125] 1) Solve the function equation of the 25° ideal fixed-length connecting rod 12, assuming that the ideal point of the fixed point e in the 25° instantaneous state is P α , the ideal point of d is P α ',P α Point and P α 'Point connection is P α P α ', let P α P α 'The straight line is L α ', define L α ' is the straight line where the fixed-length connecting rod 12 is located under the ideal condition of 25°. The straight line equation is set as: (Y-Y1) / (Y2-Y1)=(X-X1) / (X2-X1), and the coordinates of the point P' passing through are (L1-R'*sinβ', L2-R'*cosβ'), and the coordinates of point P are (R*cosθ', R*sinθ'). Substituting into the solution, we can get L α The equation of the straight line is: (L2-R'*cosβ'-R*sinθ')*X+(R'*sinβ'-L1)*Y+R*(L1*sinθ'-L2*cosθ')+R*R'*cos(θ'+β')+R 2 *sinθ'*cos

[0126] θ'=0;

[0127] 2) Establish constraint conditions. According to the formula M=F*R, the distance from point f to the fixed-length connecting rod 12 should be less than R. Therefore, the ideal distance value is set to Q*R, Q∈(0,1);

[0128] 3) Solve the relationship between the angles β' and θ' under the ideal condition of 25°. The distance formula from point (X0, Y0) to the straight line AX+BY+C=0 is: D=(|AX0+BY0+C|) / (A2 +B 2 )^ 1 / 2 (where A and B are not zero at the same time);

[0129] 5. Obtain the optimal model for the relationship between β' and θ' angles

[0130] A state compensator is added to the relationship between the angles of β' and θ', and the 45° and 25° models are sampled respectively. The 45° sampling interval is defined as [35°, 50°), the sampling frequency is 10', and the sample size N is 95. The 25° sampling interval is defined as [20°, 35°), the sampling length is 10', and the sample size N is 95. Then, by Taylor's theorem:

[0131] The remainder (ξ is between x0 and x), so:

[0132] as well as

[0133] The trigonometric functions in the relationship between the angles β' and θ' of 45° and 25° are approximated by polynomials, that is, sinθ'=θ'-(θ') 3 / 3! +(θ') 5 / 5! , cos

[0134] θ'=1-(θ') 2 / 2! +(θ') 4 / 4! , cos(θ'+β')=1-(θ'+β') 2 / 2! +(θ'+β') 4 / 4! ,

[0135] cosβ'=1-(β') 2 / 2! +(β') 4 / 4! , sinβ'=β'-(β') 3 / 3! +(β') 5 / 5! Then substitute the 45° sampling value and the 25° sampling value into the 45° and 25° models respectively to obtain the corresponding correction values ​​δ and η, and then use the correction value δ k (k = 1 to N) and η k (k=1~N) through y=a0+a1x+a2x 2 +a3x 3 +a4x 4 +a5x 5The state compensators δ(θ', R) and η(θ', R) can be obtained by fitting the fifth-order polynomial. The final model expression of the modified 45° is: β'=ε(θ', R)+δ(θ', R), and the final model expression of the modified 25° is: β'=τ(θ', R)+η(θ', R);

[0136] 6. Find the polar coordinates of the moving point and determine the hole position

[0137] At the same time, the ideal state models of hinge 25° and hinge 45° are gradually approached to 35°, and: The solution can get R, and then the R value is substituted into the final models of 45° and 25° respectively, that is, for the 45° model, β'=ε(θ')+δ(θ'), and for the 25° model, β'=τ(θ')+η(θ'). The two equations can be combined to get θ', so the polar coordinates of the moving point P are (R, θ'), and finally the position coordinates of the moving point P in the established OXY coordinate system can be determined by the moving point P(R, θ'): P(R*cosθ', R*sinθ').

[0138] In this embodiment, the purpose of establishing the state model of the hinge at 45° in the third step is to increase the support force of the hinge at 45°. The purpose of establishing the state model of the hinge at 25° in the fourth step is to increase the closing force of the hinge at 25°. At the same time, the Q value in the fourth step is assumed to be 0.8, at this time, there is |R(L1*sinθ'-L2*cosθ')+R*R'*cos(θ'+β')+R 2 *sinθ'*cosθ'| / ((L2-R'*cosβ'-R*sinθ') 2 +(R'*sinβ'-L1) 2 )^ 1 / 2 =0.8R, the solution is: 16R' 2 +16R 2 -9L1 2 +16L2 2 -41R 2 *cosθ' 2 -32L2*R*sinθ'+

[0139] 25R 2 *cosθ' 4 -25L2*cosθ' 2 -32R'*L1*sinβ'+32R*R'sinθ'*cosβ' -50L1*R*cosθ'+50L1*R*cosθ' 3 -25R' 2 cos(θ'+β') 2+50L2*R'*cosθ'*cos(θ'+β')=0, where L1, L2 and R' are constants, and the relationship between β' and θ' is implicit, denoted as β'=g(θ',R), where θ'∈(θ,π / 2), β'∈(0,π / 2).

[0140] In the fifth step, when the optimal model of the fixed-length connecting rod 12 is obtained, sampling can be performed according to Table 1 and Table 2. According to the above formula, when the hinge is at 45° and 25°, it is substituted into the 45° and 25° models respectively, and the correction values ​​δ and η corresponding to Table 3 and Table 4 are obtained.

[0141] The above specific embodiments are only implementation methods with better technical effects of the present invention. All structures that are the same or equivalent to the upward flip door hinge and the design method thereof of the present invention are within the protection scope of the present invention.

[0142] Table 1 45° sampling value table (i=1~N, j=1~N)

[0143] θ' 35° 35°10′ ... 49°40′ 49°50′ R <![CDATA[R1]]> <![CDATA[R2]]> ... <![CDATA[R i-1 ]]> <![CDATA[R i ]]> β’ <![CDATA[β1’]]> <![CDATA[β2’]]> ... <![CDATA[β j-1 ’]]> <![CDATA[β j ’]]>

[0144] Table 2 25° sampling value table (i=1~N, j=1~N)

[0145] θ' 20° 20°10′ ... 34°40′ 34°50′ R <![CDATA[R1]]> <![CDATA[R2]]> ... <![CDATA[R i-1 ]]> <![CDATA[R i ]]> β’ <![CDATA[β1’]]> <![CDATA[β2’]]> ... <![CDATA[β j-1 ’]]> <![CDATA[β j ’]]>

[0146] Table 3 45° sampling value correction table (i=1~N, j=1~N, k=1~N)

[0147] θ' 35° 35°10′ ... 49°40′ 49°50′ R <![CDATA[R1]]> <![CDATA[R2]]> ... <![CDATA[R i-1 ]]> <![CDATA[R i ]]> β’ <![CDATA[β1’]]> <![CDATA[β2’]]> ... <![CDATA[β j-1 ’]]> <![CDATA[β j ’ <!-- 8 -->]]> δ <![CDATA[δ1]]> <![CDATA[δ2]]> ... <![CDATA[δ k-1 ]]> <![CDATA[δ k ]]>

[0148] Table 4 25° sampling value correction table (i=1~N, j=1~N, k=1~N)

[0149] θ' 20° 20°10′ ... 34°40′ 34°50′ R <![CDATA[R1]]> <![CDATA[R2]]> ... <![CDATA[R i-1 ]]> <![CDATA[R i ]]> β’ <![CDATA[β1’]]> <![CDATA[β2’]]> ... <![CDATA[β j-1 ’]]> <![CDATA[β j ’]]> η <![CDATA[η1]]> <![CDATA[η2]]> ... <![CDATA[η k-1 ]]> <![CDATA[η k ]]>

Claims

1. A hinge for an upward-flipping door, characterized in that: The upward flip door hinge comprises a connecting rod assembly (1), a driving module (2) and a fixing plate (3); the connecting rod assembly (1) comprises an input connecting rod (11), a fixed-length connecting rod (12), an adjusting connecting rod (13), a first supporting connecting rod (14), a second supporting connecting rod (15), a third supporting connecting rod (16) and an output connecting rod (17); the input connecting rod (11) is movably hinged to the driving module (2), the fixing plate (3) and the fixed-length connecting rod (12), the adjusting connecting rod (13) is movably hinged to the fixing plate (3) and the fixed-length connecting rod (12), the first supporting connecting rod (14) is movably hinged to the adjusting connecting rod (13), the second supporting connecting rod (15) and the output connecting rod (17), and the third supporting connecting rod (16) is movably hinged to the second supporting connecting rod (15) and the output connecting rod (17).

2. The hinge for an upwardly-flipped door according to claim 1, characterized in that: The input connecting rod (11) is provided with an adjusting gear set (19), a transmission shaft (110) and a spring slider (111); the adjusting gear set (19) can be meshed and transmitted on the input connecting rod (11); the transmission shaft (110) is fixed on the adjusting gear set (19); and the spring slider (111) is threadedly connected to the transmission shaft (110).

3. The hinge for an upward-flipping door according to claim 1, characterized in that: The adjusting connecting rod (13) is provided with a damper stopper (18) riveted thereto.

4. The hinge for an upwardly-flipped door according to claim 1, characterized in that: The driving module (2) comprises an upper spring sleeve (21) and a lower spring sleeve (22) which are sleeved and connected, a spring (23) arranged between the upper spring sleeve (21) and the lower spring sleeve (22), and a guide column (24) connected between the upper spring sleeve (21) and the lower spring sleeve (22); the upper spring sleeve (21) is connected to the input connecting rod (11), and the lower spring sleeve (22) is riveted to the fixing plate (3).

5. The hinge for an upward-flipping door according to claim 1, characterized in that: The flip-up door hinge is provided with a first damping adjustment module (4) and a second damping adjustment module (5) which are riveted to the fixing plate (3) respectively.

6. The hinge for an upward-flipping door according to claim 5, characterized in that: The first damping adjustment module (4) comprises a first damping mounting seat (41) riveted on the fixing plate (3) and a first damping member (42) arranged in the first damping mounting seat (41); the first damping member (42) corresponds to the position of the adjustment connecting rod (13).

7. The hinge for an upwardly-flipped door according to claim 5, characterized in that: The second damping adjustment module (5) comprises a second damping mounting seat (51) riveted on the fixing plate (3) and a second damping member (52) arranged in the second damping mounting seat (51); the second damping member (52) corresponds to the position of the adjustment connecting rod (13).

8. A design method for an upturned door hinge as claimed in claim 1, characterized in that: The design method comprises the following steps:

1. Set the parameters required for design Point a: the hinge point between the driving module (2) and the fixing plate (3); Point b: the hinge point between the input link (11) and the drive module (2); Point c: the hinge point between the input connecting rod (11) and the fixed plate (3); Point d: the hinge point between the fixed-length connecting rod (12) and the input connecting rod (11); Point e: the hinge point between the adjusting connecting rod (13) and the fixed-length connecting rod (12); Point f: the hinge point between the adjusting link (13) and the fixing plate (3); Point g: the hinge point between the first supporting link (14) and the adjusting link (13); Point h: the hinge point between the second supporting link (15) and the first supporting link (14); Point i: the hinge point between the second supporting link (15) and the fixing plate (3); Point j: the hinge point between the third supporting link (16) and the second supporting link (15); Point k: the hinge point between the output link (17) and the third supporting link (16); Point 1: The hinge point between the output link (17) and the first supporting link (14); R: the distance between points e and f; θ: the angle between line segment ef and the X-axis; L: the straight line where the line segment de is located; M: the straight line where the line segment cd lies; R': distance between points c and d; β: the angle between line segment cd and the Y axis; L1: The projection length of line segment cf in the X-axis direction; L2: The projection length of line segment cf in the Y-axis direction; N: the straight line where the line segment oe lies; P: the ideal point of fixed point e at 45° instantaneous state; P': the ideal point of fixed point d at 45° instantaneous state; L': the straight line where the line segment PP' is located; θ': the angle between line segment Pf and the X-axis; β': the angle between the line segment cd and the Y-axis direction; M: the straight line where the line segment pf lies; P α : The ideal point of fixed point e in the instantaneous state of 25°; P α ': the ideal point of fixed point d in the instantaneous state of 25°; L α ': Line segment P α P α 'The straight line where it is located; 2. Constructing the design coordinate system Take f as the origin and establish the OXY coordinate system, where the coordinates of point f are (0,0), and the polar coordinates of point e are (R,θ); the distance between point e and point f is set to R, and the angle between line segment ef and the X-axis is θ; point d and point e are connected as de, and the line where de is located is set to L; point c and point d are connected as cd, and the line where cd is located is set to M; cd is set to R', and the angle between cd and the Y-axis direction is set to β; point c and point f are connected as cf, and the projection length of cf in the X-axis direction is set to L1, and the projection length of cf in the Y-axis direction is set to L2; 3. Establish the state model when the hinge is 45° 1) Solve the function equation of the ideal fixed-length link (12) of the hinge 45°. The equation of the straight line N where the line segment oe lies is: Y = K*X, and K = tanθ (θ∈(0,π / 2)), so the straight line equation of N is: Y = (tanθ)*X. When θ = 45°, the angle β is a constant; 2) Establish constraint conditions, set the ideal point of fixed point e in the instantaneous state of 45° as P, the ideal point of d as P', the connection of point P and point P' as PP', set the straight line where PP' is located as L', connect the origin f and the moving point P as Pf, set the angle between line segment Pf and X-axis as θ', the angle between cd and Y-axis direction as β', set the straight line where Pf is located as M, and L'⊥M. Under this constraint condition, the equation of straight line L' is: Y = K'*X+B, where B∈(-∞, 0)∪(0, +∞), and K*K'=-1, and point P is on straight line L', the coordinates of point P are (R*cosθ', R*sinθ'), so the equation of straight line L' is: Y = -X / tanθ'+R / sinθ'(θ'∈(θ, π / 2)); 3) Solve the relationship between the angles β' and θ' under the ideal condition of a hinge of 45°. According to the analytical method, the coordinates of point P' are (L1-R'*sinβ', L2-R'*cosβ'), and P' is on the straight line L. Therefore, L2-R'*cosβ'=(R'*sinβ'-L1) / tanθ'+R / sinθ'. After rearranging, we get R'*sin(θ'+β')-L1*cosθ'-L2*sinθ'+R=0, where L1, L2 and R' are constants. Further, we get: β'=arcsin((L1*cos θ'+L2*sinθ') / R'-R)-θ', recorded as β'=ε(θ', R), where θ'∈(θ, π / 2), β’∈(0，π / 2)； 4. Establish the state model when the hinge is 25° 1) Solve the function equation (12) of the 25° ideal fixed-length connecting rod, assuming that the ideal point of the fixed point e at the 25° instantaneous state is P α , the ideal point of d is P α ',P α Point and P α 'Point connection is P α P α ', let P α P α 'The straight line is L α ', define L α ' is the straight line where the fixed-length connecting rod (12) is located under the ideal condition of 25°. The straight line equation is set as: (Y-Y1) / (Y2-Y1)=(X-X1) / (X2-X1), and the coordinates of the point P' passing through are (L1-R'*sinβ', L2-R'*cosβ'), and the coordinates of point P are (R*cosθ', R*sinθ'). Substituting into the solution, we can get L α The equation of the straight line is: (L2-R'*cosβ'-R*sinθ')*X+(R'*sinβ'-L1)*Y+R*(L1*sinθ'-L2*cosθ')+R*R'*cos(θ'+β')+R 2 *sinθ'*cosθ'=0; 2) Establish constraint conditions. According to the formula M=F*R, the distance from point f to the fixed-length connecting rod (12) should be less than R. Therefore, the ideal distance value is set to Q*R, Q∈(0,1); 3) Solve the relationship between the angles β' and θ' under the ideal condition of 25°. The distance formula from the point (X0, Y0) to the straight line AX+BY+C=0 in the plane rectangular coordinate system is: D=(|AX0+BY0+C|) / (A 2 +B 2 )^ 1 / 2 (where A and B are not zero at the same time); 5. Obtain the optimal model for the relationship between β' and θ' angles A state compensator is added to the relationship between the angles of β' and θ', and the 45° and 25° models are sampled respectively. The 45° sampling interval is defined as [35°, 50°), the sampling frequency is 10', and the sample size N is 95. The 25° sampling interval is defined as [20°, 35°), the sampling length is 10', and the sample size N is 95. Then, by Taylor's theorem: The remainder (ξ is between x0 and x), so: as well as The trigonometric functions in the relationship between the angles β' and θ' of 45° and 25° are approximated by polynomials, that is, sinθ'=θ'-(θ') 3 / 3! +(θ') 5 / 5! , cosθ'=1-(θ') 2 / 2! +(θ') 4 / 4! , cos(θ'+β')=1-(θ'+β') 2 / 2! +(θ'+ b') 4 / 4!,cosβ'=1-(β') 2 / 2!+(β') 4 / 4!,sinβ'=β'-β'-(β') 3 / 3!+(b') 5 / 5!, Then substitute the 45° sampling value and the 25° sampling value into the 45° and 25° models respectively to obtain the corresponding correction values ​​δ and η, and then use the correction value δ k (k = 1 to N) and η k (k=1~N) by y=a0+a1x+a2x 2 +a3x 3 +a4x 4 +a5x 5 The state compensators δ(θ', R) and η(θ', R) can be obtained by fitting the fifth-order polynomial. The final model expression of the modified 45° is: β'=ε(θ', R)+δ(θ', R), and the final model expression of the modified 25° is: β'=τ(θ', R)+η(θ', R); 6. Find the polar coordinates of the moving point and determine the hole position At the same time, the ideal state models of hinge 25° and hinge 45° are gradually approached to 35°, and: The solution can get R, and then the R value is substituted into the final models of 45° and 25° respectively, that is, for the 45° model, β'=ε(θ')+δ(θ'), and for the 25° model, β'=τ(θ')+η(θ'). The two equations can be combined to get θ', so the polar coordinates of the moving point P are (R, θ'), and finally the position coordinates of the moving point P in the established OXY coordinate system are determined: P(R*cosθ',R*sinθ').

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