A front windshield lower clip

Abstract

The present invention relates to the field of vehicle accessories, and provides a front windshield lower clamping strip, comprising: a clamping strip, one end of which is provided with a special-shaped assembly cavity, comprising a first limiting arm, a second limiting arm and an installation port; a soft material limiting piece, fixed to the top of the first limiting arm, extending from the installation port into the special-shaped assembly cavity, comprising a contraction section and a plugging head; a cover plate, the bottom of which is provided with a J-shaped piece, during the assembly process of the cover plate and the clamping strip, the J-shaped piece pushes the plugging head of the soft material limiting piece to move toward the inner wall of the first limiting arm, so as to make the J-shaped piece easily enter the special-shaped assembly cavity for assembly; when the cover plate and the clamping strip are assembled in place, the top of the first limiting arm and the top of the second limiting arm accommodate the contraction section and the J-shaped piece, and the plugging head and the part of the J-shaped piece located in the special-shaped assembly cavity form an abutment blockage to the installation port, so as to make the J-shaped piece assembled in the special-shaped assembly cavity. The present invention realizes the easy and stable installation of the clamping strip and the cover plate at the bottom of the front windshield of the vehicle, and is shock-absorbing and quiet during the driving of the vehicle.

Description

Technical Field

[0001] The invention relates to the field of vehicle accessories, and in particular to a front windshield lower clip strip. Background Art

[0002] The windshield lower clip is manufactured through a plastic and aluminum strip mixed extrusion process and is mainly used on the lower side of the car's windshield to assemble and fix the bottom of the windshield.

[0003] For example, patent document No. 200980118734.7 discloses a profile piece for connecting a vehicle window glass to a water tank, but the clamping joint between the clamping strip and the glass may collide and generate noise during the driving of the vehicle.

[0004] For example, patent document No. 202010488980.X discloses a car air intake grille sealing strip with a soft hollow structure, but it cannot ensure that the glass can be easily installed in the strip.

[0005] For example, the patent document with patent number DE102011056955 discloses a profile element for connecting stationary vehicle glass components, but it does not provide a soft connecting piece to dynamically buffer the vibration of the cover plate.

[0006] Therefore, how to achieve easy and stable installation of glass is a technical problem that needs to be solved at present. Summary of the invention

[0007] To this end, the present invention provides a front windshield lower clip strip, which has a radial avoidance space through the soft material limiter and the special-shaped assembly cavity of the clip strip, so that the J-shaped part of the cover plate can be easily installed by pushing the soft material limiter into the avoidance space, and the soft material limiter and the J-shaped part jointly block the installation opening of the special-shaped assembly cavity to achieve stable installation.

[0008] To achieve the above object, the present invention provides a front windshield lower clip strip, comprising:

[0009] A clamping strip, one end of which is provided with a special-shaped assembly cavity, wherein the special-shaped assembly cavity comprises a first limiting arm and a second limiting arm, wherein the first limiting arm and the second limiting arm are spaced apart to form an installation opening, and a front windshield is arranged on the outer side of an outer wall of the first limiting arm;

[0010] A cover plate, the bottom of which is provided with a J-shaped piece, the J-shaped piece extends from the installation opening into the special-shaped assembly cavity to assemble the cover plate with the clamping strip at the bottom thereof;

[0011] A soft material limiter, comprising a fixing portion, a contraction section and a plugging head, wherein the fixing portion is fixed to the top of the first limiter arm, the contraction section is arranged through the mounting opening, the plugging head is arranged in the special-shaped assembly cavity, and there is a spacing space between the plugging head and the inner wall of the first limiter arm, so that during the assembly process of the cover plate and the clamping strip, the J-shaped member pushes the plugging head to move toward the inner wall of the first limiter arm;

[0012] When the cover plate and the clamping strip are assembled in place, the tops of the first limiting arm and the second limiting arm clamp the contraction section and the J-shaped part, the bent portion of the J-shaped part abuts against the plugging head, and the total projection area of ​​the bent portion and the plugging head toward the mounting port is larger than the cross-sectional area of ​​the mounting port, thereby forming an abutment blockage on the mounting port, so as to fix the J-shaped part in the special-shaped assembly cavity.

[0013] Furthermore, the curvature value of the contraction section and the thickness value of the plugging head are matched to make the equivalent stress of the soft material limiter concentrated on the plugging head, which is determined by the response surface model and the stress distribution cloud map.

[0014] Furthermore, the plugging head is made of rubber or TPE material;

[0015] The stress distribution cloud diagram is a finite element modeling model that describes the deformation rate of the plugging head through a hyperelastic constitutive model;

[0016] The stress distribution cloud diagram and the pressure loaded by the response surface model are the force exerted by the J-shaped member on the plugging head.

[0017] Further, a line connecting the lowest point of the first limiting arm contacting the plugging head and the highest point of the bending portion abutting the plugging head is taken as the thickness of the plugging head, and the equivalent stress is concentrated within the range of the thickness.

[0018] In the above scheme, by concentrating the equivalent stress on the plugging head rather than the contraction section, it is avoided that the vibration during the driving of the car acts on the contraction section, causing structural fatigue of the contraction section, reduced structural strength, and loss of control over the position of the plugging head, causing the plugging head to move away from the installation port, thereby causing assembly failure.

[0019] Furthermore, the plugging head has a through buffer hole to reduce the effect of equivalent stress concentration.

[0020] Furthermore, the top of the first limiting arm has an inclined portion;

[0021] The inclined portion shrinks from the top end toward the mounting opening to fix the fixing portion.

[0022] Furthermore, the bottom end of the inclined portion and the plugging head have a structure of being engaged with each other.

[0023] In the above solution, stable installation of the soft material limiter is achieved.

[0024] Furthermore, the thickness of the fixing portion is greater than the thickness of the plugging head, and when the cover plate vibrates, it contacts the fixing portion, so that the fixing portion reduces the vibration of the cover plate.

[0025] Furthermore, a strip-shaped buffer portion made of soft material is provided on the outer side of the bottom wall of the special-shaped assembly cavity, and the buffer portion covers the bottom surface of the bottom wall.

[0026] Furthermore, a strip-shaped vertical rib structure is provided on the outer side of the bottom wall of the special-shaped assembly cavity.

[0027] Furthermore, the contraction section is fixedly contacted with the inner side of the installation opening or is spaced apart;

[0028] The bottom wall of the special-shaped assembly cavity and the second limiting arm have a first metal frame that is connected, and the inclined portion has a second metal frame. Both the first metal frame and the second metal frame are provided in a covering manner.

[0029] Furthermore, the soft material limiting piece and the clamping strip are integrally formed.

[0030] Furthermore, the plugging head and the bending portion are provided with a mutually engaging clamping structure.

[0031] Furthermore, the blocking head is provided with an abutting arm abutting against an inner wall of the first limiting arm.

[0032] Furthermore, the second limiting arm protrudes into the mounting opening to form a protruding portion, and the J-shaped member is recessed inward to form a mounting position. The shape fitting formula of the protruding portion is matched with the shape fitting formula of the mounting position, so that the volume of the recessed structure at the mounting position is larger than the volume of the protruding portion, thereby forming a buffer cavity for buffering the vibration of the protruding portion.

[0033] In the above solution, the impact of the vibration of the cover plate on the J-shaped member is buffered by matching the shape fitting formula of the protrusion and the installation position.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. There is a radial avoidance space between the soft material limiter and the special-shaped assembly cavity of the card strip, so that the J-shaped part of the cover plate can be easily installed by pushing the soft material limiter into the avoidance space. The soft material limiter and the J-shaped part jointly block the installation port of the special-shaped assembly cavity to achieve stable installation.

[0036] 2. By concentrating the equivalent stress on the plugging head instead of the contraction section, the vibration during the driving of the car is avoided from acting on the contraction section, which may cause structural fatigue of the contraction section, reduce the structural strength, and lose control of the position of the plugging head, causing the plugging head to be away from the installation port, thereby causing assembly failure.

[0037] 3. Through various forms of plugging heads, the installation is further stabilized to avoid assembly failure caused by vibration.

[0038] 4. The impact of the vibration of the cover plate on the J-shaped part is buffered by matching the shape fitting formula of the raised part and the installation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic structural diagram of a first front windshield lower clip strip according to an embodiment of the present invention;

[0040] Figure 2 A schematic diagram of a stress distribution cloud diagram of a lower clip strip of a front windshield according to an embodiment of the present invention;

[0041] Figure 3 A schematic diagram of a response surface model of a front windshield lower clip strip according to an embodiment of the present invention;

[0042] Figure 4 A schematic diagram of the detailed structure of a mounting portion and a protruding portion according to an embodiment of the present invention;

[0043] Figure 5 It is a schematic structural diagram of the front windshield lower clip strip assembled with the front windshield according to an embodiment of the present invention;

[0044] Figure 6 This is a schematic diagram of the specific structure of the second front windshield lower clip strip according to an embodiment of the present invention;

[0045] Figure 7 This is a schematic diagram of the specific structure of a third front windshield lower clip strip according to an embodiment of the present invention;

[0046] Figure 8 This is a schematic diagram of the specific structure of a fourth front windshield lower clip strip according to an embodiment of the present invention;

[0047] Fig. 9 This is a schematic diagram of the specific structure of a fifth front windshield lower clip strip according to an embodiment of the present invention;

[0048] Fig.10 This is a schematic diagram of the specific structure of a sixth front windshield lower clip strip according to an embodiment of the present invention;

[0049] Fig.11 This is a schematic diagram of the specific structure of the seventh front windshield lower clip strip according to an embodiment of the present invention;

[0050] Fig.12This is a schematic diagram of the specific structure of an eighth front windshield lower clip strip according to an embodiment of the present invention;

[0051] Fig.13 is a schematic diagram of a specific structure of a ninth front windshield lower clip strip according to an embodiment of the present invention;

[0052] Fig.14 It is a structural schematic diagram of a vertical rib structure of a front windshield lower clip strip according to an embodiment of the present invention;

[0053] Fig.15 It is a schematic structural diagram of another front windshield lower clip strip provided with a vertical rib structure according to an embodiment of the present invention.

[0054] In the figure: 1. cover plate; 11. J-shaped part; 111. installation place; 112. bending part; 2. clamping strip; 21. special-shaped assembly cavity; 211. second limiting arm; 2111. raised part; 212. first limiting arm; 2121. inclined part; 22. first metal skeleton; 23. vertical rib structure; 3. soft material limiting part; 31. fixing part; 32. contraction section; 33. sealing head; 331. buffer hole; 332. abutting arm; 333. clamping structure; 34. connecting arm; 4. buffer part; 5. front windshield. DETAILED DESCRIPTION

[0055] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0056] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0057] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0058] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] like Figures 1 to 15 As shown, the present invention provides a front windshield lower clamping strip, and radial avoidance space exists between the soft material limiting component and the special-shaped assembly cavity of the clamping strip, so that the J-shaped component of the front windshield of the automobile can be easily installed by pushing the soft material limiting component into the avoidance space, and the installation opening of the special-shaped assembly cavity is blocked by the soft material limiting component and the J-shaped component to achieve stable installation, so that the installation of the J-shaped component in the clamping strip has a certain buffer, thereby improving the comfort and safety performance of the driver and passengers.

[0060] like Figures 1 to 15 As shown, the present invention proposes a front windshield lower clamping strip, comprising: a clamping strip 2, one end of which is provided with a special-shaped assembly cavity 21, the special-shaped assembly cavity 21 comprises a first limiting arm 212 and a second limiting arm 211, the first limiting arm 212 and the second limiting arm 211 are arranged at intervals to form a mounting opening, and a front windshield 5 is arranged on the outer side of the outer wall of the first limiting arm 212;

[0061] The soft material stopper 3 comprises a fixing portion 31, a contraction section 32 and a plugging head 33. The fixing portion 31 is fixed to the top of the first stopper arm 212. The contraction section 32 is provided through the installation opening. The plugging head 33 is provided in the special-shaped assembly cavity 21 and has a spacing space with the inner wall of the first stopper arm 212. During the assembly process of the cover plate 1 and the clamping strip 2, the J-shaped member 11 pushes the plugging head 33 of the soft material stopper 3 to move toward the inner wall of the first stopper arm 212, so as to facilitate the J-shaped member 11 to enter the special-shaped assembly cavity 21 for assembly.

[0062] The cover plate 1 has a J-shaped member 11 at its bottom, and the J-shaped member 11 extends from the installation opening into the special-shaped assembly cavity 21 to assemble the cover plate 1 with the clamping strip 2 at its bottom;

[0063] When the cover plate 1 and the clamping strip 2 are assembled in place, the tops of the first limiting arm 212 and the second limiting arm 211 clamp the contraction section 32 and the J-shaped part 11, and the bent portion 112 of the J-shaped part 11 abuts against the plugging head 33. The total projection area of ​​the bent portion 112 and the plugging head 33 toward the installation port is larger than the cross-sectional area of ​​the installation port, thereby forming an abutment blockage on the installation port, so as to fix the J-shaped part 11 in the special-shaped assembly cavity 21.

[0064] Furthermore, the curvature value of the contraction section 32 and the thickness value of the plugging head 33 are matched to make the equivalent stress of the soft material limiter 3 concentrated on the plugging head 33, which is determined by the response surface model and the stress distribution cloud map.

[0065] During the design and inspection stage of the soft material limiter 3, a response surface model and a stress distribution cloud map are fitted to characterize the relationship between the curvature of the contraction section 32, the thickness of the plugging head 33 and the equivalent stress it is subjected to. Through the response surface model and the stress distribution cloud map, the equivalent stress is concentrated on the plugging head 33, and the contraction section 32 will not accumulate structural fatigue and assembly failure.

[0066] Furthermore, the plugging head 33 is made of rubber or TPE material; the stress distribution cloud map is a finite element modeling model that describes the deformation rate of the plugging head 33 through a hyperelastic constitutive model; the pressure loaded by the stress distribution cloud map and the response surface model is the force exerted by the J-shaped member 11 on the plugging head 33.

[0067] Further, the line connecting the lowest point of the first limiting arm 212 contacting the plugging head 33 and the highest point of the bending portion 112 abutting the plugging head 33 is taken as the thickness of the plugging head 33, and the equivalent stress is concentrated within the range of the thickness.

[0068] In the above scheme, by making the equivalent stress concentrated on the plugging head 33 instead of the contraction section 32, it is avoided that the vibration during the driving of the car acts on the contraction section 32, causing the contraction section 32 to produce structural fatigue, reduce structural strength, and lose control of the position of the plugging head 33, causing the plugging head 33 to move away from the installation port, thereby causing assembly failure.

[0069] Specifically, see Figure 2, the plugging head 33 is preferably made of TPE (thermoplastic elastomer) material, and the third-order Ogden hyperelastic constitutive model is selected to describe its high nonlinearity, and the tensile and equivalent stress data of TPE are fitted. According to the formula of TPE of the plugging head 33, its Poisson's ratio is set to 0.4. A J-shaped part 11 is set, and the penalty function of the interaction of the plugging head 33 is applied by direct pressurization method. The pressure is 2.6MPa to 3MPa, which is the average force of the bending part 112 of the J-shaped part 11 during the vibration of the J-shaped part 11 driven by the cover plate 1 during the driving of the car. Considering the characteristics of rubber, a four-node bilinear axisymmetric quadrilateral unit CAX4RH is selected, and the hybrid formula is selected to reduce the integral. The shape of the grid unit is a quadrilateral, and an advanced algorithm is used. During the simulation process, the seed spacing is set to 0.3mm and the number of grids is 1020.

[0070] More specifically, the strain energy formula of the third-order Ogden hyperelastic constitutive model is: ,

[0071] In the formula, according to the material elasticity test of the plugging head 33, when k is 1, They are 40.012 and 2.221 respectively; when k is 2, They are -12.332 and 5.504 respectively; when k is 3, are -26.071 and -1.668 respectively, and λ1 to λ3 are the transverse elongations of the plugging head 33. Then, the following is generated by determining the strain energy: Figure 2 The response surface model shown.

[0072] The curvature of the contraction section 32 is defined as the angle between the upper surface of the inclined portion 2121 and the upper surface of the plugging head. The contact surface between the curved portion 112 and the plugging head 33 is established as follows: Figure 3 From the response surface model shown in FIG. 1 , it can be seen that the greater the curvature and thickness, the greater the equivalent stress of the contact surface. The curvature range of 50 to 60 degrees and the thickness of 19 mm to 22 mm with an equivalent stress greater than 14 MPa are selected, and the following are established respectively: Figure 2 The stress distribution cloud diagram shown. Figure 3It can be known that: for the stress of the transverse thickness of 20mm and 22mm, the stress is mainly concentrated in the contraction section 32, and for the thickness of 19mm, all the stress is concentrated in the plugging head 33. The possible reason for this situation is that as the thickness increases, the plugging head 33 is squeezed more and more, resulting in serious deformation, and due to the structural design, the lower part of the plugging head 33 is less stressed, so the stress is mainly concentrated in the upper part of the plugging head 33. Therefore, the thickness of the plugging head 33 is 18.1mm to 19.9mm, preferably 19mm, and the curvature of the contraction section 32 is 51 degrees to 59 degrees, preferably 50 degrees. The stress within this range is concentrated in the plugging head 33 and close to the contact surface.

[0073] Furthermore, if Fig.10 As shown, the plugging head 33 has a through buffer hole 331 to reduce the effect of its equivalent stress concentration. Specifically, the area of ​​the buffer hole is as follows: Figure 2 The stress concentration areas shown are consistent, so that when the plugging head 33 is subjected to force, it shrinks toward the buffer hole 331, thereby reducing the shaking caused by the stress concentration, impacting the first limit arm 212, and causing the generation of noise.

[0074] Furthermore, the top of the first limiting arm 212 has an inclined portion 2121 ; the inclined portion 2121 shrinks from the top end toward the installation opening to fix the fixing portion 31 .

[0075] Furthermore, the bottom end of the inclined portion 2121 and the plugging head 33 have a mutually engaging structure.

[0076] In the above solution, stable installation of the soft material limiter 3 is achieved.

[0077] Furthermore, the thickness of the fixing portion 31 is greater than the thickness of the plugging head 33 , and when the cover plate 1 vibrates, it contacts the fixing portion 31 , so that the fixing portion 31 mitigates the vibration of the cover plate 1 .

[0078] Furthermore, if Figure 1 As shown, a strip-shaped buffer portion 4 made of soft material is provided on the outer side of the bottom wall of the special-shaped assembly cavity 21, and the buffer portion 4 covers the bottom surface of the bottom wall.

[0079] It should be noted that the buffer portion 4, as an additional layer of the card strip 2, can prevent external objects or the environment from causing damage to the outer side surface of the bottom wall of the special-shaped assembly cavity 21 of the card strip 2, reduce the pressure caused by collision or friction, reduce the contact impact between the card strip 2 and surrounding objects, reduce discomfort, and provide a softer and more comfortable touch.

[0080] Furthermore, a strip-shaped vertical rib structure is provided on the outer side of the bottom wall of the special-shaped assembly cavity 21 .

[0081] Furthermore, the contraction section 32 is fixed in contact with the inner side of the installation port or is spaced apart; the bottom wall of the special-shaped assembly cavity 21 and the second limiting arm 211 have a connected first metal skeleton 22, and the inclined portion 2121 has a second metal skeleton, and the first metal skeleton 22 and the second metal skeleton are both covered.

[0082] Furthermore, the soft material limiting member 3 and the clamping strip 2 are integrally formed.

[0083] Specifically, the strip-shaped member, the special-shaped assembly cavity 21, and the soft material stopper 3 are integrally formed, so that the structure of the card strip 2 is more stable and not easy to deform and break. The smooth transition curved surface on the inner side of the first stopper arm 212 and the second stopper arm 211 can reduce friction and collision, improve the smoothness of the card strip 2 and the stability of the vehicle. The card strip 2 is provided with a vertical rib structure 23, which can be better connected to the ventilation grille to prevent the card strip 2 from falling off. The design of the buffer part 4 increases the flexibility and buffering of the card strip 2, reduces the impact force during collision, and improves the comfort and safety performance of the driver and passengers. The soft material stopper 3 makes the special-shaped assembly cavity 21 better adapt to the shape of the J-shaped member 11 and improves the buffering performance of the card strip 2. The free end of the second stopper arm 211 is provided with a protrusion, which is better in contact with the J-shaped member 11 and improves the stability of the card strip 2. The thickness of the second stopper arm 211 is variable, and the hardness and elasticity of the card strip 2 are adjusted as needed to adapt to different front windshields 5.

[0084] Furthermore, if Fig. 9 As shown, the plugging head 33 and the bending portion 112 are provided with a snap-fitting structure 333 that engages with each other.

[0085] Furthermore, if Fig.11 As shown, the blocking head 33 is provided with an abutting arm 332 abutting against the inner wall of the first limiting arm 212 .

[0086] Furthermore, the second limiting arm 211 protrudes into the installation opening to form a protruding portion 2111, and the J-shaped member 11 is recessed inward to form a mounting portion 111. The shape fitting formula of the protruding portion 2111 is matched with the shape fitting formula of the mounting portion 111, so that the volume of the recessed structure of the mounting portion 111 is larger than the volume of the protruding portion 2111, thereby forming a buffer cavity for buffering the vibration of the protruding portion 2111.

[0087] Specifically, Figure 4 As shown, the shape fitting formula of the protrusion 2111 is: , wherein the y-axis is tangent to the side wall on the upper side of the installation location 111 of the J-shaped member 11, the origin is located below the installation location 111, the x-axis and the y-axis are perpendicular to the origin, and the shape fitting formula of the protrusion 2111 is a hook-shaped function translated along the y-axis, wherein a, b, and c are setting parameters, a determines the inclination of the side wall of the protrusion 2111, b determines the protrusion height of the protrusion 2111, and c determines the distance from the origin, and a, b, and c are preferably 0.642, 0.771, and 5, respectively, so that the protrusion 2111 can have a certain structural strength while preventing the J-shaped member 11 from falling off, wherein the parameter c can be adjusted according to the height of the second limiting arm 211. The hook-shaped function has the advantages of a small side wall angle and easy fitting production, thereby realizing a stable snap-fit ​​installation of the protrusion 2111 and the installation location 111, forming a structure such as Figure 4 The raised portion 2111 is shown by the center line segment BC, wherein point B is the top end of the raised portion 2111 extending into the installation opening, and point C is the bottom end of the raised portion 2111 located in the special-shaped assembly cavity 21. The raised portion 2111 is arranged at the bottom end of the inclined surface of the second limiting arm 211 inclined toward the special-shaped assembly cavity 21.

[0088] The shape fitting formula of the installation part 111 is: , that is, multiple arc functions with the same arc center but different radii are connected to form, where d and e are the arc center coordinates, which are adjusted according to the length of the J-shaped part 11 to determine the specific position of the installation part 111 on the J-shaped part 11 and the length of the J-shaped part 11 extending into the special-shaped assembly cavity 21. The radius ri is determined according to the least squares method, and the square of the radius ri is used as the objective function to eliminate the positive and negative effects, and the program is optimized to determine that rimin≤0.1d is selected, where d is the maximum value of the distance between the two side walls of the protrusion 2111, 5mm, to form the following Figure 4 The installation part 111 is shown by the middle line segment DE, wherein point E is the bottom end of the J-shaped part 11 extending into the installation opening, and point D is the top end of the J-shaped part 11 located in the special-shaped assembly cavity 21, so that the installation part 111 is arranged at the area of ​​the J-shaped part 11 corresponding to the junction of the installation opening and the special-shaped assembly cavity 21, and the thickness of the J-shaped part 11 at the upper part of the installation part 111 is less than the thickness of the J-shaped part 11 at the lower part of the installation part 111, so that the upper part of the installation part 111 is easy to pass through the installation opening, and the lower part enters the special-shaped assembly cavity 21 and is not easily vibrated out from the installation opening.

[0089] In the above solution, the impact of the vibration of the cover plate 1 on the J-shaped member 11 is buffered by matching the shape fitting formula of the protrusion 2111 with the installation location 111 .

[0090] Specifically, since the soft material stopper 3 is preferably made of rubber, during its production process, the molding shape of the soft material stopper 3 can be adjusted by simply changing the shape of the combined mold. Figure 1The shape of the soft material stopper 3 shown is the basic shape of the combined mold production. By adding or removing the fixing strips through the combined mold, the Figures 7 to 11 Shape shown.

[0091] Specifically, Figure 5 As shown, the fixing portion 31 of the soft material stopper 3 is a triangle, and its longest long hypotenuse completely covers the inclined portion 2121, and the long hypotenuse wraps and fixes around the rounded corner of the top of the inclined portion 2121, that is, it exceeds the top of the inclined portion 2121, and forms an interference fit with the lower windshield 5 abutting against the other side of the inclined portion 2121. It can be understood that since the soft material stopper 3 of rubber or TPE has a certain deformation amount, therefore, by setting its fixing portion 31 to a triangle, it can be easily clamped and fixed by the windshield 5 and the cover plate 1 fixed on both sides, thereby making its setting stable.

[0092] Specifically, Figure 6 As shown, the plugging head 33 has a groove located at the bottom end of the clamping inclined portion 2121. Figure 7 As shown, the plugging head is a trapezoid with a wide top and a narrow bottom, with a wide plane at the top abutting against the bottom end of the inclined portion 2121 to limit the upward and downward movement with a certain degree of freedom, and a narrow plane at the bottom abutting against the upward plane of the curved portion 112 to limit the upward and downward movement with a certain degree of freedom. Figure 8 As shown, the plane of the plugging head 33 facing the first limiting arm 212 is a non-contracted inclined surface, thereby increasing the distance between the plugging head 33 and the inner wall of the first limiting arm 212, which is suitable for the case where the cover plate 1 vibrates violently, has a large mass, and has a large force, thereby further reducing the noise of the plugging head 33 impact. Fig.12 and Fig.13 As shown, the plugging head 33 blocks the J-shaped piece 11 at the upper side of the installation opening and abuts against the top of the second limiting arm 211. The contraction section 32 is connected to the fixing portion 31 through a connecting arm 34. The connecting arm 34 forms an arc-shaped cover body for blocking the J-shaped piece 11. Fig.13 The plugging head 33 and the top end of the second limiting arm 211 have an interference fit, and the elastic deformation of the plugging head 33 is used to form a stable fixation.

[0093] It should be noted that Figures 5 to 11 , Fig.14 and 15 The structures can be arranged separately or mixedly, for example, the plugging head has both the buffer hole 331 and the abutment arm 332 .

[0094] In this embodiment, there is a radial avoidance space between the soft material stopper 3 and the special-shaped assembly cavity 21 of the card strip 2, so that the J-shaped part 11 of the cover plate 1 can be easily installed by pushing the soft material stopper 3 into the avoidance space, and the installation port of the special-shaped assembly cavity 21 is blocked by the soft material stopper 3 and the J-shaped part 11 together, so as to achieve stable installation. By making the equivalent stress concentrated on the plugging head 33 instead of the contraction section 32, it is avoided that the vibration during the driving of the car acts on the contraction section 32, causing the contraction section 32 to produce structural fatigue, reduce structural strength, lose control of the position of the plugging head 33, and cause the plugging head 33 to be away from the installation port, thereby causing assembly failure. Through the various forms of the plugging head 33, its installation is further stabilized to avoid assembly failure caused by vibration. By matching the shape fitting formula of the protrusion 2111 and the installation part 111, the impact of the vibration of the cover plate 1 on the J-shaped part 11 is buffered.

[0095] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A front windshield lower clip strip, characterized in that: include: A clamping strip (2) is provided with a special-shaped assembly cavity (21) at one end, and two side walls of the special-shaped assembly cavity (21) are respectively a first limiting arm (212) and a second limiting arm (211), the first limiting arm (212) and the second limiting arm (211) are arranged at intervals to form an installation opening, and the cross-sectional area of ​​the installation opening is smaller than the cross-sectional area of ​​the special-shaped assembly cavity (21), and a front windshield (5) is arranged on the outer side of the outer wall of the first limiting arm (212); A cover plate (1) having a J-shaped piece (11) at its bottom, wherein the J-shaped piece (11) extends from the installation opening into the special-shaped assembly cavity (21) to enable the cover plate (1) to be assembled with a clamping strip (2) at its bottom; A soft material limiting component (3), comprising a fixing portion (31), a contraction section (32) and a plugging head (33); the fixing portion (31) is fixed to the top of the first limiting arm (212); the contraction section (32) is arranged through the installation opening; the plugging head (33) is arranged in the special-shaped assembly cavity (21), and there is a spacing space between the plugging head (33) and the inner wall of the first limiting arm (212), so that during the assembly process of the cover plate (1) and the clamping strip (2), the J-shaped component (11) pushes the plugging head (33) to move toward the inner wall of the first limiting arm (212); When the cover plate (1) and the clamping strip (2) are assembled in place, the top of the first limiting arm (212) and the top of the second limiting arm (211) accommodate the contraction section (32) and the J-shaped member (11), and the bent portion (112) of the J-shaped member (11) abuts against the plugging head (33). The total projection area of ​​the bent portion (112) and the plugging head (33) toward the installation opening is larger than the cross-sectional area of ​​the installation opening. The abutment of the plugging head (33) with the J-shaped member (11) and the abutment of the J-shaped member (11) with the second limiting arm (211) form an abutment blockage on the installation opening, so that the J-shaped member (11) is fixedly assembled in the special-shaped assembly cavity (21).

2. The front windshield lower clip strip according to claim 1, characterized in that: The curvature value of the contraction section (32) and the thickness value of the plugging head (33) are matched to make the equivalent stress on the soft material limiter (3) concentrated on the plugging head (33), which is determined by a response surface model and a stress distribution cloud map.

3. The front windshield lower clip strip according to claim 2, characterized in that: The plugging head (33) is made of rubber or TPE material; The stress distribution cloud diagram is a finite element modeling model that describes the deformation rate of the plugging head (33) through a hyperelastic constitutive model; The stress distribution cloud diagram and the pressure loaded on the response surface model are the force exerted by the J-shaped member (11) on the plugging head (33).

4. The front windshield lower clip strip according to claim 2, characterized in that: The first limiting arm (212) contacts the lowest point of the plugging head (33), and a line connecting the highest point of the plugging head (33) abutted by the bending portion (112) is used as the thickness of the plugging head (33), and the equivalent stress is concentrated within the range of the thickness.

5. The front windshield lower clip strip according to claim 1, characterized in that: The plugging head (33) has a through buffer hole (331) for reducing the effect of equivalent stress concentration.

6. The front windshield lower clip strip according to claim 1, characterized in that: The top of the first limiting arm (212) has an inclined portion (2121); The inclined portion (2121) shrinks from the top end toward the installation opening to fix the fixing portion (31).

7. The front windshield lower clip strip according to claim 6, characterized in that: The bottom end of the inclined portion (2121) has a snap-fitting structure with the plugging head (33).

8. The front windshield lower clip strip according to claim 1, characterized in that: The thickness of the fixing portion (31) is greater than the thickness of the sealing head (33), and when the cover plate (1) vibrates, it contacts the fixing portion (31), so that the fixing portion (31) reduces the vibration of the cover plate (1).

9. The front windshield lower clip strip according to claim 1, characterized in that: A strip-shaped buffer portion (4) made of soft material is provided on the outer side of the bottom wall of the special-shaped assembly cavity (21), and the buffer portion (4) covers the bottom surface of the bottom wall.

10. The front windshield lower clip strip according to claim 1, characterized in that: A strip-shaped vertical rib structure (23) is provided on the outer side of the bottom wall of the special-shaped assembly cavity (21).

11. The front windshield lower clip strip according to claim 6, characterized in that: The contraction section (32) is fixedly contacted with the inner side of the installation opening or is spaced apart; The bottom wall of the special-shaped assembly cavity (21) and the second limiting arm (211) have a first metal frame (22) that is connected, and the inclined portion (2121) has a second metal frame, and the first metal frame (22) and the second metal frame are both covered.

12. The front windshield lower clip strip according to claim 1, characterized in that: The soft material limiting member (3) and the clamping strip (2) are integrally formed.

13. The front windshield lower clip strip according to claim 1, characterized in that: The plugging head (33) and the bent portion (112) are provided with a mutually engaging snap-fitting structure (333).

14. The front windshield lower clip strip according to claim 1, characterized in that: The blocking head (33) is provided with an abutting arm (332) abutting against the inner wall of the first limiting arm (212).

15. The front windshield lower clip strip according to claim 1, characterized in that: The second limiting arm (211) protrudes into the installation opening to form a protruding portion (2111), and the J-shaped member (11) is recessed inward to form a mounting portion (111), and a shape fitting formula of the protruding portion (2111) matches a shape fitting formula of the mounting portion (111).

16. The front windshield lower clip strip according to claim 15, characterized in that: The volume of the recessed structure at the installation location (111) is made larger than the volume of the raised portion (2111), thereby forming a buffer cavity for buffering the vibration of the raised portion (2111).

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