Limiting structure, application and positioning method thereof

Abstract

The invention belongs to the technical field of non-standard machined parts, and provides a limiting structure, application and a positioning method of the limiting structure. The limiting block is provided with symmetrical base plates and an elastic part used for being connected with the symmetrical base plates. The limiting seat is provided with symmetrical bases and a limiting part used for being connected with the symmetrical bases. And when the limiting block is matched with the limiting seat, the elastic part is embedded with the limiting part. The limiting block has the degree of freedom in the first direction, the limiting seat has the degree of freedom in the second direction, and when the limiting block and the limiting seat are installed and positioned, the limiting block and the limiting seat can be embedded, so that the limiting block and the limiting seat respectively displace in the corresponding directions, and the limiting block and the limiting seat are automatically adjusted to the optimal positioning position; and then the positioned limiting block and limiting seat can be fastened, so that the limiting effect is achieved while the strength is kept after the limiting block and the limiting seat are embedded.

Description

Technical Field

[0001] The invention belongs to the technical field of non-standard processed parts, and in particular relates to a limiting structure, application and positioning method thereof. Background Art

[0002] The SUV's iconic side-opening tailgate + back-mounted spare tire or small backpack design highlights the off-road personality. It meets the pursuit of today's off-road enthusiasts. Compared with the traditional lift-up tailgate, the back-mounted side-opening tailgate greatly increases the weight of the door. In order to ensure that the tailgate sheet metal assembly does not deform or sag after the spare tire is hung, in addition to the strong rigidity of the tailgate itself, the limit block and limit seat are also very important. It contributes greatly to the Z-direction droop and X-direction shaking of the side-opening tailgate.

[0003] Traditionally, the limit block is made of plastic, the material is polyhexamethylene adipamide, and the limit seat is made of soft steel and EPDM (full name Ethylene Propylene Diene Monomer) plastic coating. However, the limit block of this method is not strong enough and is easy to deform, which is not conducive to improving the drooping performance of the tailgate.

[0004] As one of the most important parts of a car, the door has indispensable performance indicators such as noise, vibration and harshness (NVH), door collision safety, and door droop. Under the premise of meeting these performance and functional indicators, it is currently a difficult problem to design a limit block and limit seat structure for a side-opening back door that has a lightweight structure and good anti-droop performance. Summary of the invention

[0005] In order to solve the problem raised by the background technology, the present invention proposes a limiting structure, application and positioning method thereof.

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

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

[0008] The limit block is provided with a symmetrical substrate and an elastic part for connecting the symmetrical substrate;

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

[0010] When the limiting block and the limiting seat cooperate, the elastic part and the limiting part are embedded and pressed against each other;

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

[0012] During the interlocking, if the limit seat has not been positioned, the limit seat has a degree of freedom along the second direction;

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

[0014] Preferably, the elastic portion comprises 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 is integrally connected to one end of the bent plate in the horizontal direction;

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

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

[0018] The bending plate is wedge-shaped, and the opening angle is 10-15 degrees.

[0019] Preferably, the limiting portion is integrally connected with the symmetrical base along the vertical direction, and is provided with a wedge-shaped opening engaged with the elastic portion.

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

[0021] Preferably, a second waist-shaped hole is formed on the base, and a straight line segment of the second waist-shaped hole is arranged along a second direction, and the second direction is a direction parallel to the symmetry center line.

[0022] Preferably, the first waist-shaped hole is matched with a first self-tapping bolt, and the second waist-shaped hole is matched with a second self-tapping bolt.

[0023] An application of a limiting structure, applying the above limiting structure to a car.

[0024] Preferably, the first limit block is mounted on the body of the car by bolts;

[0025] The limit seat is installed on the rear door of the car by means of bolts;

[0026] The limiting block is engaged with the limiting seat by closing the rear door of the automobile.

[0027] A positioning method, applied to the above-mentioned limiting structure, comprises the following steps:

[0028] Pre-tighten the limit block to the first carrier by means of bolts;

[0029] Pre-tighten the limit seat to the second carrier by bolts;

[0030] Assemble the first carrier to the second carrier so that the limit block and the limit seat are engaged, and when engaged, the limit block is displaced along the first direction, and the limit seat is displaced along the second direction;

[0031] After the chimerization is completed, the first vector is separated from the second vector;

[0032] The displaced limit block and limit seat are fastened by bolts.

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

[0034] Beneficial effects of the present invention:

[0035] 1. The limit block of the present invention has a degree of freedom in the first direction, and the limit seat has a degree of freedom in the second direction. When the limit block and the limit seat are installed and positioned, the limit block and the limit seat can be engaged to make the limit block and the limit seat displace in the corresponding directions respectively, so as to automatically adjust to the best positioning position. After that, the positioned limit block and the limit seat can be tightened, so that the limit block and the limit seat can produce a limiting effect while maintaining strength after being engaged;

[0036] 2. The elastic part of the limit block of the present invention adopts a structure of a combination of a first straight plate, a bent plate and a second straight plate. The 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 limiting structure has simpler process and convenient installation and adjustment, which is more conducive to improving the performance of the back door drooping, is easy to implement, has strong practicality and good application prospects, and can be widely used;

[0038] 4. The positioning method of the present invention utilizes the characteristics that the limit block and the limit seat have freedom in the first direction and the second direction, and sets a method of first pre-tightening to find the best position and then re-tightening to fix the limit structure, thereby improving the installation efficiency of the limit block and the limit seat.

[0039] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

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

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

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

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

[0047] In the figure: 1. limit block; 101. base plate; 102. first waist-shaped hole; 103. elastic part; 1031. first straight plate; 1032. bending plate; 1033. second straight plate; 104. first countersunk groove; 2. limit seat; 201. base; 202. second waist-shaped hole; 203. limit part; 204. second countersunk groove; 3. first self-tapping bolt; 4. second self-tapping bolt. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] A limiting structure, such as Figure 1As shown, it includes a limit block 1 and a limit seat 2, wherein the limit block 1 is equipped with a first self-tapping bolt 3, and the limit seat 2 is equipped with a second self-tapping bolt 4. The limit block 1 and the limit seat 2 can be respectively installed on different parts for positioning through the self-tapping bolts. When different parts are matched, the limit block 1 and the limit seat 2 can be embedded with each other. At this time, if the limit block 1 and the limit seat 2 have not been positioned on other parts, then the limit block 1 and the limit seat 2 will be displaced in the direction with freedom. If the limit block 1 and the limit seat 2 have been positioned at this time, the two will play a limiting role after being embedded.

[0050] Combine the following Figure 2-Figure 5 The limiting structure is described in detail.

[0051] like Figure 2 As shown, the limit block 1 is provided with a symmetrical substrate 101, and an elastic part 103 for connecting the symmetrical substrate 101. The elastic part 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 with one substrate 101 in the vertical direction, and is integrally connected with one end of the bending plate 1032 in the horizontal direction; the second straight plate 1033 is integrally connected with one substrate 101 in the symmetrical direction in the vertical direction, and is integrally connected with 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. In addition, the bending plate 1032 is wedge-shaped, and the opening angle is 10 to 15°.

[0052] In addition, a first waist-shaped hole 102 is formed on the substrate 101. The straight line segment of the first waist-shaped hole 102 is along the first direction ( Figure 1 The first waist-shaped hole 102 is arranged in the direction of the first self-tapping bolt 3, wherein the first direction is perpendicular to the symmetric center line of the elastic portion 103. During assembly, the first waist-shaped hole 102 can be matched with the first self-tapping bolt 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 by bolts, and the limit block 1 is formed of sheet metal as a whole, and the material is high-strength steel SAPH440, and the thickness is preferably 3.0mm. The limit block 1 can be installed and connected to the vehicle body with two M8 bolts (first self-tapping bolts 3), and the bolt torque reaches 23±3N·m. The installation holes of the limit block 1 are two 10.5*14 first waist-shaped holes 102 along the first direction, which mainly adjust the distance in the first direction. The bolts are self-positioning bolts, which are convenient for installation and adjustment.

[0054] It needs to be further explained that Figure 2The structure in the embodiment can be manufactured by a bending process, and the elastic part 103 thereof can be deformed when subjected to pressure in the first direction, and then it elastically rebounds to reset, thereby reducing the noise generated by vibration. In addition, after the first waist-shaped hole 102 is pre-tightened with the bolt, the limit block 1 can be displaced in a small range in the first direction, and the small range of displacement can be used to adjust the optimal installation position of the limit block 1 during the assembly and positioning process, and finally fastened by the bolt.

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

[0056] In addition, the limiting portion 203 is integrally connected to the symmetrical base 201 along the vertical direction. A second waist-shaped hole 202 is provided on the base 201, and the straight section of the second waist-shaped hole 202 is along the second direction ( Figure 1 The second waist-shaped hole 202 can be matched with the second self-tapping bolt 4 during assembly.

[0057] It should be noted that Figure 3 The limit seat 2 is stamped with 3mm thick high-strength steel plate, and then wrapped with a layer of EPDM (ethylene propylene diene monomer rubber) material using a plastic coating process. 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 waist-shaped holes 202 along the second direction, which are mainly used to adjust the distance in the second direction. The bolts are self-locating bolts, which are convenient for installation and adjustment.

[0058] like Figure 4 As shown, when the first self-tapping bolt 3 is fully tightened, it can be matched with the first countersunk groove 104 on the surface of the substrate 101, and the first countersunk groove 104 is set with the first waist-shaped hole 102 as the center. When the first self-tapping bolt 3 is fully tightened, the freedom of the limit block 1 in the first direction will be limited.

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

[0060] Combination Figure 1-Figure 3It can be seen that when engaged, if the limit block 1 has not been positioned, the limit block 1 has a degree of freedom along the first direction; when engaged, if the limit seat 2 has not been positioned, the limit 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 following describes the displacement of the limit structure in combination with its application and 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 rear door of the automobile by bolts. Finally, the limiting block 1 and the limiting seat 2 are engaged by closing the rear door of the automobile.

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

[0063] The first limit block 1 is firmly installed at the body A of the car by bolts. At the same time, the limit seat 2 is installed in place at the back door B of the car by bolts. When the back door of the car is closed, the limit block 1 and the limit seat 2 are precisely engaged to ensure the stability and safety of the structure.

[0064] In addition, the design principle of the limit structure is also applicable to other parts of the car. For example, the limit block 1 and the limit seat 2 can be installed at the corresponding positions of the front door and the body of the car respectively to achieve the limit function of the front door. Similarly, the structure can also be applied to the side door, roof and other parts of the car, and the limit block 1 and the limit seat 2 are installed at the corresponding positions by fasteners such as bolts to achieve the limit effect.

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

[0066] like Figure 6 As shown, this is a positioning method, which is applied to Figure 1-Figure 5 The limiting structure comprises the following steps:

[0067] S1: pre-tighten the limit block 1 to the first carrier by means of bolts;

[0068] S2: pre-tighten the limit seat 2 to the second carrier by bolts;

[0069] S3: Assemble the first carrier to the second carrier so that the limit block 1 and the limit seat 2 are engaged (automatically aligned by the wedge-shaped structures of the limit block 1 and the limit seat 2), and when engaged, the limit block 1 is displaced along the first direction, and the limit seat 2 is displaced along the second direction;

[0070] S4: After the chimerization is completed, the first vector is separated from the second vector;

[0071] S5: Fasten the limit block 1 and the limit seat 2 after displacement by bolts.

[0072] In some optional embodiments, the first carrier is the body of the car, and the second carrier is the back door of the car. The limit block 1 is installed on the side of the car body through two self-positioning bolts, and the bolts are pre-tightened first and not re-tightened; the limit seat 2 is installed on the back door through two self-positioning bolts, and the bolts are pre-tightened first and then re-tightened, and the bolt torque reaches 15±3N·m. The back door is closed, and the wedge-shaped structure of the limit block 1 and the limit seat 2 is automatically guided, and then the back door is opened, and the bolts of the body side limit block 1 are locked, and the torque reaches 23±3N·m, so that the back door limit block and the limit seat 2 are adjusted.

[0073] It should be noted that during the positioning process, when the limit block 1 and the limit seat 2 are engaged, the pre-tightened limit block 1 can be displaced in the first direction, and the limit seat 2 can be displaced in the second direction, so as to adjust the optimal position of the limit block 1 and the limit seat 2, and then the limit block 1 and the limit seat 2 can be fixed in the optimal position with self-tapping bolts. Compared with the traditional structure, the structure of the above-mentioned limit block 1 and the limit seat 2 is simple in process, easy to install and adjust, more conducive to improving the performance of the back door drooping, easy to implement, with strong practicality and good application prospects, and can be widely used. In addition, the structure of the limit block 1 and the limit seat 2 optimizes the traditional design structure and ensures the integrity of the structure; it makes a great contribution to the drooping of the side-opening back door in the Z direction (first direction) and the shaking in the X direction (second direction). 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions 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: It comprises a limit block (1) and a limit seat (2); The limit block (1) is provided with a symmetrical substrate (101) and an elastic portion (103) used for connecting the symmetrical substrate (101); The limiting seat (2) is provided with a symmetrical base (201) and a limiting portion (203) used for connecting to the symmetrical base (201); When the limiting block (1) and the limiting seat (2) cooperate, the elastic portion (103) and the limiting portion (203) are embedded and pressed against each other; During engagement, if the limit block (1) has not been positioned, the limit block (1) has a degree of freedom along the first direction; During engagement, if the limiting seat (2) has not been positioned, the limiting seat (2) has a degree of freedom along the second direction; The first direction is perpendicular to the second direction.

2. A limiting structure according to claim 1, characterized in that: The elastic portion (103) comprises a first straight plate (1031), a bent plate (1032) and a second straight plate (1033); The first straight plate (1031) is integrally connected to a base plate (101) in a vertical direction, and is integrally connected to one end of a bent plate (1032) in a horizontal direction; The second straight plate (1033) is integrally connected to a base plate (101) in a symmetrical direction along the vertical direction, and is integrally connected to the other end of the bent plate (1032) along 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 bending plate (1032) is wedge-shaped, and the opening angle is 10-15°.

3. A limiting structure according to claim 2, characterized in that: The limiting portion (203) is integrally connected to the symmetrical base (201) along the vertical direction, and is provided with a wedge-shaped opening that engages with the elastic portion (103).

4. A limiting structure according to claim 2 or 3, characterized in that: The base plate (101) is provided with a first waist-shaped hole (102), and the straight line segment of the first waist-shaped hole (102) is arranged along a first direction, and the first direction is a direction perpendicular to the symmetry center line of the elastic part (103).

5. A limiting structure according to claim 4, characterized in that: The base (201) is provided with a second waist-shaped hole (202), and the straight line segment of the second waist-shaped hole (202) is arranged along a second direction, and the second direction is a direction parallel to the symmetry center line.

6. A limiting structure according to claim 5, characterized in that: The first waist-shaped hole (102) is matched with a first self-tapping bolt (3), and the second waist-shaped hole (202) is matched with a second self-tapping bolt (4).

7. An application of a limiting structure, characterized in that: The limiting structure described in any one of claims 1 to 6 is applied to an automobile.

8. The application of a limiting structure according to claim 7, characterized in that: The limit block (1) is mounted on the body of the automobile by means of bolts; The limit seat (2) is mounted on the rear door of the car by means of bolts; The limiting block (1) is engaged with the limiting seat (2) by closing the rear door of the vehicle.

9. A positioning method, characterized in that: The limiting structure applied to any one of claims 1 to 6 comprises the following steps: Pre-tightening the limit block (1) to the first carrier by means of bolts; Pre-tightening the limit seat (2) to the second carrier by means of bolts; Assembling the first carrier to the second carrier so that the limit block (1) and the limit seat (2) are engaged, wherein when engaged, the limit block (1) is displaced along a first direction and the limit seat (2) is displaced along a second direction; After the chimerization is completed, the first vector is separated from the second vector; The displaced limit block (1) and the limit seat (2) are fastened by bolts.

10. A positioning method according to claim 9, characterized in that: The first carrier is a car body, and the second carrier is a rear door of the car.

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