A limiting structure, its application and positioning method

Abstract

This invention belongs to the field of non-standard processed parts technology, and provides a limiting structure, its application, and its positioning method. The limiting structure includes a limiting block and a limiting seat. The limiting block has symmetrical base plates and an elastic portion for connecting the symmetrical base plates. The limiting seat has symmetrical bases and a limiting portion for connecting the symmetrical bases. When the limiting block and the limiting seat are engaged, the elastic portion fits into the limiting portion. The limiting block of this invention has a degree of freedom in a first direction, and the limiting seat has a degree of freedom in a second direction. When installing and positioning the limiting block and the limiting seat, they can be fitted together, causing the limiting block and the limiting seat to shift in their respective directions, thereby automatically adjusting to the optimal positioning position. After positioning, the limiting block and the limiting seat can be tightened, so that the fitted limiting block and the limiting seat maintain strength while producing a limiting effect.

Description

Technical Field

[0001] This invention belongs to the field of non-standard processed parts technology, and specifically relates to a limiting structure, its application and positioning method. Background Technology

[0002] The iconic side-opening tailgate of an SUV, along with the rear-mounted spare tire or small backpack design, highlights its off-road character and satisfies the pursuit of today's off-road enthusiasts. Compared to the traditional liftgate, the rear-mounted side-opening tailgate significantly increases the weight of the door. To ensure that the tailgate assembly does not deform or sag after the spare tire is mounted, in addition to the strong rigidity of the tailgate itself, the limiting block and limiting seat are also very important. They contribute greatly to preventing the side-opening tailgate from sagging downwards in the Z-direction and swaying in the X-direction.

[0003] Traditionally, the limiting block uses plastic parts made of polyhexamethylene adipamide, and the limiting seat is made of mild steel and EPDM rubber (Ethylene Propylene Diene Monomer). However, the limiting block of this method is not strong enough and is easily deformed, which is not conducive to improving the sagging performance of the back door.

[0004] As a crucial component of automobiles, car doors must meet stringent performance standards in terms of noise, vibration, harshness (NVH), collision safety, and sag resistance. Designing a lightweight structure for the limiting block and seat of a side-opening tailgate that also exhibits excellent anti-sag properties while satisfying these performance and functional requirements is a current challenge. Summary of the Invention

[0005] To address the problems raised in the background art, this invention proposes a limiting structure, its application, and its positioning method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A limiting structure includes a limiting block and a limiting seat;

[0008] The limiting block is provided with symmetrical base plates and elastic parts for connecting the symmetrical base plates.

[0009] The limiting seat is provided with a symmetrical base and a limiting part for connecting the symmetrical base;

[0010] When the limiting block and the limiting seat are engaged, the elastic part is embedded in the limiting part and squeezes against each other;

[0011] During engagement, if the limiting block has not yet been positioned, the limiting block has a degree of freedom along the first direction;

[0012] When engaged, if the limiting seat is not yet positioned, the limiting seat has a degree of freedom along the second direction;

[0013] The first direction is perpendicular to the second direction.

[0014] Preferably, the elastic part includes a first straight plate, a bent plate, and a second straight plate;

[0015] The first straight plate is integrally connected to a base plate in the vertical direction and integrally connected to one end of a bent plate in the horizontal direction.

[0016] The second straight plate is integrally connected to a substrate in the vertical direction and in the symmetrical direction, and integrally connected to the other end of the bent plate in the horizontal direction.

[0017] The first straight plate and the second straight plate are symmetrically arranged with the bending plate as the center.

[0018] The bending plate is wedge-shaped with an opening angle of 10-15°.

[0019] Preferably, the limiting part is integrally connected to the symmetrical base in the vertical direction, and is provided with a wedge-shaped opening that fits into the elastic part.

[0020] Preferably, the substrate has a first waist-shaped hole, and the straight segment of the first waist-shaped hole is arranged along a first direction, which is a direction perpendicular to the center line of symmetry of the elastic part.

[0021] Preferably, the base has a second oblong hole, and the straight segment of the second oblong hole is set along a second direction, which is parallel to the center line of symmetry.

[0022] Preferably, the first oblong hole is fitted with a first self-tapping screw, and the second oblong hole is fitted with a second self-tapping screw.

[0023] An application of a limiting structure, which applies the aforementioned limiting structure to automobiles.

[0024] Preferably, the first limiting block is installed on the vehicle body using bolts;

[0025] The limiting seat is installed on the rear door of the car using bolts;

[0026] The limit block engages with the limit seat by closing the car's tailgate.

[0027] A positioning method, applied to the aforementioned limiting structure, includes the following steps:

[0028] The limiting block is pre-tightened to the first carrier by bolts;

[0029] The limiting seat is pre-tightened to the second carrier using bolts;

[0030] The first carrier is assembled onto the second carrier to make the limiting block and the limiting seat fit together. When fitted together, the limiting block is displaced along the first direction and the limiting seat is displaced along the second direction.

[0031] After the integration is complete, the first carrier is detached from the second carrier;

[0032] The limit block and limit seat are tightened by bolts to secure the displacement.

[0033] Preferably, the first carrier is the body of a car, and the second carrier is the tailgate of the car.

[0034] The beneficial effects of this invention are:

[0035] 1. The limiting block of the present invention has a degree of freedom in the first direction and the limiting seat has a degree of freedom in the second direction. When the limiting block and the limiting seat are installed and positioned, the limiting block and the limiting seat can be fitted together, so that the limiting block and the limiting seat are displaced in the corresponding directions respectively, thereby automatically adjusting to the optimal positioning position. After that, the positioned limiting block and the limiting seat can be tightened, so that the limiting block and the limiting seat can produce a limiting effect while maintaining strength after being fitted together.

[0036] 2. The elastic part of the limiting block of the present invention adopts a structure combining a first straight plate, a bent plate and a second straight plate. This structure can resist elastic deformation in the first direction, reduce noise and optimize NVH performance.

[0037] 3. The limiting structure of the present invention can be applied to automobiles. Compared with the traditional structure, the process is simple and the installation and adjustment are convenient. It is more conducive to improving the performance of the tailgate drooping, and it is easy to implement. It has strong practicality and good application prospects and can be widely used.

[0038] 4. The positioning method of the present invention utilizes the characteristics of the limiting block and the limiting seat having degrees of freedom in the first and second directions, and sets a method of first pre-tightening to find the optimal position, and then tightening to fix the limiting structure, thereby improving the installation efficiency of the limiting block and the limiting seat.

[0039] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 An assembly schematic diagram of a limiting structure according to the present invention is shown;

[0042] Figure 2 A schematic diagram of the limiting block of the present invention is shown;

[0043] Figure 3 A schematic diagram of the structure of the limiting seat of the present invention is shown;

[0044] Figure 4 An exploded view of the limiting block and the first self-tapping screw of the present invention is shown;

[0045] Figure 5 An exploded view of the limiting seat and the second self-tapping screw of the present invention is shown;

[0046] Figure 6 A flowchart of the positioning method of the present invention is shown.

[0047] In the figure: 1. Limiting block; 101. Base plate; 102. First oblong hole; 103. Elastic part; 1031. First straight plate; 1032. Bending plate; 1033. Second straight plate; 104. First countersunk groove; 2. Limiting seat; 201. Base; 202. Second oblong hole; 203. Limiting part; 204. Second countersunk groove; 3. First self-tapping screw; 4. Second self-tapping screw. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] A limiting structure, such as Figure 1As shown, it includes a limiting block 1 and a limiting seat 2. The limiting block 1 is fitted with a first self-tapping screw 3, and the limiting seat 2 is fitted with a second self-tapping screw 4. The limiting block 1 and the limiting seat 2 can be installed on different components for positioning by the self-tapping screws. When different components are fitted together, the limiting block 1 and the limiting seat 2 can be interlocked. If the limiting block 1 and the limiting seat 2 are not yet positioned on other components, they will move in the direction with degrees of freedom. If the limiting block 1 and the limiting seat 2 are already positioned, they will act as a limiting device after being interlocked.

[0050] The following combination Figures 2-5 The limiting structure is described in detail.

[0051] like Figure 2 As shown, the limiting block 1 is provided with symmetrical base plates 101 and elastic portions 103 for connecting the symmetrical base plates 101. The elastic portion 103 includes a first straight plate 1031, a bending plate 1032, and a second straight plate 1033; wherein the first straight plate 1031 is integrally connected to one base plate 101 in the vertical direction and integrally connected to one end of the bending plate 1032 in the horizontal direction; the second straight plate 1033 is integrally connected to one base plate 101 in the symmetrical direction in the vertical direction and integrally connected to the other end of the bending plate 1032 in the horizontal direction; the first straight plate 1031 and the second straight plate 1033 are symmetrically arranged with the bending plate 1032 as the center. Furthermore, the bending plate 1032 is wedge-shaped with an opening angle of 10-15°.

[0052] Additionally, a first oblong hole 102 is formed on the substrate 101, and the straight segment of the first oblong hole 102 is along the first direction ( Figure 1 The first direction (direction A) is set, which is perpendicular to the center line of symmetry of the elastic part 103. During assembly, the first oblong hole 102 can be fitted with the first self-tapping screw 3.

[0053] It should be noted that, in Figure 2 In the structure, the base plate 101 can be fixed to the surface of the component with bolts, and the limiting block 1 is made of sheet metal, using high-strength steel SAPH440, with a preferred thickness of 3.0mm. The limiting block 1 can be installed on the vehicle body with two M8 bolts (first self-tapping bolts 3), with a bolt torque of 23±3 N·m. The mounting holes of the limiting block 1 are two 10.5*14 first oblong holes 102 along the first direction, mainly for adjusting the distance in the first direction. The bolts are self-positioning bolts for easy installation and adjustment.

[0054] It needs to be further explained that, Figure 2The structure can be manufactured using a bending process. When its elastic part 103 is subjected to pressure in the first direction, it can deform and then elastically rebound to its original position, thereby reducing noise generated by vibration. In addition, after the first oblong hole 102 is pre-tightened with the bolt, the limiting block 1 can move within a small range in the first direction. During the assembly and positioning process, the optimal installation position of the limiting block 1 can be adjusted by using this small range of displacement, and finally it is tightened with bolts.

[0055] like Figure 3 As shown, the limiting seat 2 is provided with a symmetrical base 201 and a limiting part 203 for connecting the symmetrical base 201. Specifically, the limiting part 203 has a symmetrical structure, and its shape is adapted to the elastic part 103. A wedge-shaped opening is provided at the end of the limiting part 203, which can cover the elastic part 103. When the limiting block 1 and the limiting seat 2 are engaged, the elastic part 103 can be fitted into the wedge-shaped opening of the limiting part 203.

[0056] Additionally, the limiting part 203 is integrally connected to the symmetrical base 201 along the vertical direction. The base 201 has a second oblong hole 202, the straight segment of which runs along the second direction (…). Figure 1 The second direction is set in the B direction, and the second direction is parallel to the center line of symmetry. During assembly, the second oblong hole 202 can be used with the second self-tapping screw 4.

[0057] It should be noted that, Figure 3 The limit seat 2 is made of 3mm thick high-strength steel plate, stamped and formed, and then coated with EPDM (ethylene propylene diene monomer rubber) material. It is installed on the inner plate of the rear door assembly with two M8 bolts (second self-tapping bolts 4). The bolt torque reaches 15±3N·m. The mounting holes of the limit seat 2 are two 10.5*14 second oblong holes 202 along the second direction, which are mainly used to adjust the distance in the second direction. The bolts are self-positioning bolts, which are convenient for installation and adjustment.

[0058] like Figure 4 As shown, when the first self-tapping screw 3 is fully tightened, it can fit into the first countersunk groove 104 on the surface of the substrate 101. The first countersunk groove 104 is set with the first oblong hole 102 as the center. When the first self-tapping screw 3 is fully tightened, the degree of freedom of the limiting block 1 in the first direction will be restricted.

[0059] like Figure 5 As shown, after the second self-tapping screw 4 is tightened, it can cooperate with the second countersunk groove 204, and the degree of freedom of the limit seat 2 in the second direction will be restricted.

[0060] Combination Figures 1-3It can be seen that during engagement, if the limiting block 1 is not yet positioned, the limiting block 1 has a degree of freedom along the first direction; during engagement, if the limiting seat 2 is not yet positioned, the limiting seat 2 has a degree of freedom along the second direction, and the first direction (Z direction) is perpendicular to the second direction (X direction). The displacement situation will be explained below in conjunction with the application of the limiting structure and the positioning method.

[0061] The limiting structure of the present invention can be applied to automobiles. Specifically, the first limiting block 1 can be installed on the body of the automobile by bolts, and the limiting seat 2 can be installed on the tailgate of the automobile by bolts. Finally, the limiting block 1 and the limiting seat 2 are engaged by closing the tailgate of the automobile.

[0062] It should be noted that the application of the limiting structure of the present invention is not limited to the tailgate of a car, but can also be widely used in many other parts of a car, as detailed below:

[0063] At point A on the car body, the first limiting block 1 is securely installed using bolts. Simultaneously, at point B on the car's tailgate, the limiting seat 2 is installed using bolts. When the car's tailgate is closed, the limiting block 1 and the limiting seat 2 precisely engage, ensuring the stability and safety of the structure.

[0064] Furthermore, the design principle of this limiting structure is also applicable to other parts of the automobile. For example, the limiting block 1 and the limiting seat 2 can be installed on the front door and corresponding positions on the body of the automobile, respectively, to achieve the limiting function of the front door. Similarly, this structure can also be applied to the side doors, roof, and other parts of the automobile, where the limiting block 1 and the limiting seat 2 can be installed in the corresponding positions using fasteners such as bolts to achieve the limiting effect.

[0065] In summary, the limiting structure of the present invention has broad application prospects, not limited to the tailgate of automobiles, but can also be flexibly applied to multiple parts of automobiles according to actual needs, providing strong protection for the safety and stability of automobiles.

[0066] like Figure 6 The image shows a positioning method applied to... Figures 1-5 The limiting structure includes the following steps:

[0067] S1: Pre-tighten the limiting block 1 to the first carrier using bolts;

[0068] S2: Pre-tighten the limiting seat 2 to the second carrier using bolts;

[0069] S3: Assemble the first carrier onto the second carrier so that the limiting block 1 and the limiting seat 2 fit together (automatic alignment is achieved through the wedge structure of the limiting block 1 and the limiting seat 2). When fitting together, the limiting block 1 moves along the first direction and the limiting seat 2 moves along the second direction.

[0070] S4: After the integration is complete, the first carrier is detached from the second carrier;

[0071] S5: The limit block 1 and limit seat 2 are fastened by bolts after displacement.

[0072] In some alternative embodiments, the first carrier is the car body, and the second carrier is the car tailgate. The limiting block 1 is installed on the side panel of the car body using two self-positioning bolts, which are pre-tightened but not retightened. The limiting seat 2 is installed on the tailgate using two self-positioning bolts, which are pre-tightened and then retightened, with a bolt torque of 15±3 N·m. When the tailgate is closed, the limiting block 1 and the limiting seat 2 automatically align themselves using their own wedge-shaped structures. Then, when the tailgate is opened, the bolts of the limiting block 1 on the side panel are locked, with a torque of 23±3 N·m. In this way, the tailgate limiting block and the limiting seat 2 are properly adjusted.

[0073] It should be noted that during the positioning process, after the limiting block 1 and the limiting seat 2 are engaged, the pre-tightened limiting block 1 can shift in the first direction, while the limiting seat 2 can shift in the second direction, thereby adjusting the optimal position of the limiting block 1 and the limiting seat 2. Afterwards, self-tapping screws can be used to fix the limiting block 1 and the limiting seat 2 in the optimal position. Compared with traditional structures, the structure of the limiting block 1 and the limiting seat 2 is simpler in process, easier to install and adjust, and more conducive to improving the sagging performance of the tailgate. It is easy to implement, has strong practicality and good application prospects, and can be widely used. In addition, the structure of the limiting block 1 and the limiting seat 2 optimizes the traditional design structure, ensuring structural integrity; it greatly contributes to the sagging in the Z-direction (first direction) and the swaying in the X-direction (second direction) of the side-opening tailgate. The structure is simple, easy to install and debug, and has strong practicality and good application prospects.

[0074] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A limiting structure, characterized in that, Includes a limit block (1) and a limit seat (2); The limiting block (1) is provided with a symmetrical base plate (101) and an elastic part (103) for connecting the symmetrical base plate (101). The limiting seat (2) is provided with a symmetrical base (201) and a limiting part (203) for connecting the symmetrical base (201). When the limiting block (1) and the limiting seat (2) are engaged, the elastic part (103) and the limiting part (203) are interlocked and squeezed against each other; When the locking block (1) is not yet positioned, the locking block (1) has a degree of freedom along the first direction; When engaged, if the limiting seat (2) is not yet positioned, the limiting seat (2) has a degree of freedom along the second direction; The first direction is perpendicular to the second direction; The elastic part (103) includes a first straight plate (1031), a bending plate (1032), and a second straight plate (1033); The first straight plate (1031) is integrally connected to a base plate (101) in the vertical direction and integrally connected to one end of the bent plate (1032) in the horizontal direction; The second straight plate (1033) is integrally connected to a base plate (101) in the vertical direction and in the symmetrical direction, and integrally connected to the other end of the bent plate (1032) in the horizontal direction; The first straight plate (1031) and the second straight plate (1033) are symmetrically arranged with the bent plate (1032) as the center; The bent plate (1032) is wedge-shaped; The limiting part (203) is integrally connected to the symmetrical base (201) in the vertical direction, and is provided with a wedge-shaped opening that fits into the elastic part (103); The substrate (101) has a first waist-shaped hole (102), and the straight segment of the first waist-shaped hole (102) is arranged along a first direction, which is a direction perpendicular to the center line of symmetry of the elastic part (103). The base (201) has a second waist-shaped hole (202), and the straight segment of the second waist-shaped hole (202) is set along a second direction, which is a direction parallel to the center line of symmetry.

2. The limiting structure according to claim 1, characterized in that, The opening angle of the bending plate (1032) is 10~15°.

3. The limiting structure according to claim 1, characterized in that, The first waist-shaped hole (102) is fitted with a first self-tapping screw (3), and the second waist-shaped hole (202) is fitted with a second self-tapping screw (4).

4. An application of a limiting structure, characterized in that, The limiting structure according to any one of claims 1-3 is applied to an automobile.

5. The application of the limiting structure according to claim 4, characterized in that, The limiting block (1) is installed on the body of the car by bolts; The limiting seat (2) is installed on the rear door of the car by bolts; The limit block (1) is engaged with the limit seat (2) by closing the rear door of the car.

6. A positioning method, characterized in that, The method applied to the limiting structure according to any one of claims 1-3 includes the following steps: The limiting block (1) is pre-tightened to the first carrier by bolts; The limiting seat (2) is pre-tightened to the second carrier by bolts; The first carrier is assembled to the second carrier so that the limiting block (1) and the limiting seat (2) are fitted together. When fitted together, the limiting block (1) is displaced along the first direction and the limiting seat (2) is displaced along the second direction. After the integration is complete, the first carrier is detached from the second carrier; The limit block (1) and limit seat (2) are tightened by bolts to ensure displacement.

7. A positioning method according to claim 6, characterized in that, The first carrier is the car body, and the second carrier is the car's tailgate.

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