Limiting device
By using a limiting device and magnetic components to fix the car door, the problem of uncontrolled opening or closing of the car door is solved, improving the paint quality and the stability of robotic painting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LEAPMOTOR TECH CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-15
AI Technical Summary
During the car painting process, the doors may open or close uncontrollably, resulting in poor paint quality.
A limiting device is provided, including a tooling body, a first mounting part, a limiting part, and a magnetic component. The first mounting part is installed on the door stop of the vehicle body, the limiting part limits the door, and the magnetic component attracts the door for stable contact, thereby controlling the opening angle of the door.
It improves or avoids the problem of uncontrolled opening or closing of car doors, and enhances paint quality and the stability of robotic painting.
Smart Images

Figure CN224237178U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automobile manufacturing technology, specifically to a limiting device. Background Technology
[0002] In the automotive painting process, the front and rear doors of a car need to be opened for painting of the door frames, inner door panels, hinges, and other areas. With the development of automotive production demands, robotic painting is now used to paint the car body. To prevent dust from accumulating on the painted surface, robots automatically open and close the doors during the painting process.
[0003] However, during the current process of robots painting car bodies, due to reasons such as unstable conveying, the doors may open or close uncontrollably, or the distance between the doors and the car body may not be guaranteed, resulting in poor painting quality. Utility Model Content
[0004] This application provides a limiting device that can fix a vehicle door and control its opening angle, thereby improving or avoiding the problem of the vehicle door opening or closing uncontrollably.
[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a limiting device, which includes a tooling body, a first mounting part, a limiting part, and a magnetic component; the first mounting part is connected to the tooling body and forms a first mounting groove for limiting the door stop on the vehicle body; the limiting part is disposed on the tooling body for limiting the door of the vehicle and forms a second mounting groove; the magnetic component is disposed in the second mounting groove and is used to attract the door so that the limiting part or the magnetic component contacts the door.
[0006] The orientation of the first opening of the first mounting slot is perpendicular to the orientation of the second opening of the second mounting slot.
[0007] The limiting part includes a sleeve, and the magnetic component is disposed inside the sleeve.
[0008] The first mounting groove is a through groove extending along a first direction. The first mounting groove has two opposing side walls and a bottom wall connecting the two side walls. The first groove opening is located between the two side walls. The distance between the two side walls is between 4.5mm and 5.5mm, and the distance between the bottom wall and the first groove opening is between 5.5mm and 6.5mm. The first direction is perpendicular to the orientation of the first groove opening and the orientation of the second groove opening.
[0009] The tooling body is a plate, and the orientation of the first slot is perpendicular to the plane on which the plate is located.
[0010] The limiting device also includes a second mounting part, which is connected to one end of the tooling body away from the limiting part. The second mounting part is used to hook into the mounting hole of the body body.
[0011] The second mounting part includes an extension part and a hook part. The first end of the extension part is connected to the edge of the tooling body, the second end of the extension part extends in a direction away from the tooling body, and the hook part is provided at the second end of the extension part and extends to one side of the limiting part.
[0012] The length of the hook portion extends between 18mm and 22mm.
[0013] The tooling body has a connecting section at one end opposite to the second installation part, and a limiting part is provided on the connecting section.
[0014] The limiting device also includes a protective component that covers the limiting part and keeps the magnetic component at a distance from the door when it is attracted to the door.
[0015] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a limiting device comprising a tooling body, a first mounting portion, a limiting portion, and a magnetic component. The first mounting portion is connected to the tooling body and forms a first mounting groove for limiting the door stop portion on the vehicle body. The limiting portion is disposed on the tooling body for limiting the vehicle door, and forms a second mounting groove. The magnetic component is disposed in the second mounting groove and is used to attract the door, ensuring stable contact between the limiting portion or the magnetic component and the door. The limiting device of this application can be mounted on the door stop portion of the vehicle body via the first mounting portion and can maintain stable contact with the door via the limiting portion or the magnetic component, thereby fixing the door and controlling its opening angle, improving or preventing the problem of uncontrolled opening or closing of the door. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the limiting device of this application;
[0018] Figure 2 This is a schematic diagram of another embodiment of the limiting device of this application;
[0019] Figure 3 This is a schematic diagram of another embodiment of the limiting device of this application.
[0020] Reference numerals: 1. Tooling body; 11. Plate; 2. First mounting part; 21. First mounting groove; 211. First groove opening; 212. Side wall; 213. Bottom wall; 3. Limiting part; 31. Second mounting groove; 311. Second groove opening; 32. Sleeve; 4. Magnetic component; 5. Second mounting part; 51. Extension part; 511. First end; 512. Second end; 52. Hook part; 6. Connecting section; 7. Protective component; 8. Weight reduction hole; 100. Limiting device. Detailed Implementation
[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.
[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0023] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0025] Please refer to the reference. Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the limiting device provided in this application. This application provides a limiting device 100, which includes a tooling body 1, a first mounting portion 2, a limiting portion 3, and a magnetic component 4. The first mounting portion 2 is connected to the tooling body 1 and forms a first mounting groove 21 for limiting the door stop portion on the vehicle body. The limiting portion 3 is disposed on the tooling body 1 for limiting the vehicle door, and forms a second mounting groove 31. The magnetic component 4 is disposed in the second mounting groove 31 and is used to attract the door, so that the limiting portion 3 or the magnetic component 4 is in stable contact with the door. The limiting device 100 of this application embodiment can be mounted on the door stop portion of the vehicle body via the first mounting portion 2, and is in stable contact with the door via the limiting portion 3 or the magnetic component 4, thereby fixing the door and controlling the opening angle of the door, improving or avoiding the problem of the door opening or closing uncontrollably.
[0026] Specifically, the first mounting part 2 can be formed by bending a steel plate along its middle. To allow the first mounting groove 21 formed after bending to be installed on the door stop of the vehicle body, the bending angle can be 180°, ensuring a shape match between the first mounting groove 21 and the door stop. A limiting part 3 is located on the side of the tooling body 1 away from the first mounting part 2, for contacting the door. Along the direction of the tooling body 1 towards the door, there is a certain distance between the projections of the limiting part 3 and the first mounting part 2, allowing the limiting part 3 to control the door to be in an open position when it contacts the door, thereby improving or preventing the door from opening or closing uncontrollably. The door opening angle is related to the distance between the projections of the limiting part 3 and the first mounting part 2 on the tooling body 1 towards the door; a larger distance results in a larger door opening angle.
[0027] In one specific embodiment, the first mounting part 2 can be formed by bending a 30mm*18mm*2.5mm steel plate along the middle, resulting in a larger contact area with the car door and higher stability. In another specific embodiment, the size of the steel plate can also include other dimensions, depending on the size of the door stop portion.
[0028] When in use, the car door can be opened first, and the first mounting part 2 can be clipped onto the door stop of the main body of the car body; then the car door can be closed. Because the limiting part 3 of the tooling body 1 is equipped with a magnetic part 4, the car door will automatically be attracted to the limiting part 3 or the magnetic part 4 to form a fixed position.
[0029] Furthermore, when the magnetic component 4 is attracted to the car door, it can directly contact the car door or indirectly contact the car door, that is, it can directly contact the car door through the limiting part 3.
[0030] In one embodiment of this application, the orientation of the first opening 211 of the first mounting groove 21 is perpendicular to the orientation of the second opening 311 of the second mounting groove 31.
[0031] Specifically, since the tooling body 1 of this embodiment needs to be attracted to the car door by the magnetic component 4, the orientation of the second slot 311 needs to be parallel to the direction of the tooling body 1 toward the car door. With the above structure, when the first mounting groove 21 is installed on the door stop portion through the first slot 211, the second slot 311 of the second mounting groove 31 on the other side can face the outside of the vehicle body, that is, toward the car door, so that when the car door is closed, it can be attracted to the magnetic component 4 or the limiting portion 3 through the second slot 311, thereby achieving the effect of fixing the car door.
[0032] Furthermore, the tooling body 1 is set as a plate 11, and the orientation of the first slot 211 is perpendicular to the plane where the plate 11 is located.
[0033] Specifically, the tooling body 1, which is a plate 11, has two opposing plate surfaces and a side surface connecting the two plate surfaces. The limiting part 3 can be connected to the side surface, and the first mounting part 2 can be connected to one of the plate surfaces or to the side surface. With the above structure, when installing the tooling body 1, one of the plate surfaces of the plate 11 faces the door stop, and at least part of the side surface of the plate 11 faces the door. This achieves the effect of fixing the door by connecting the door stop through the first mounting part 2 and the door through the limiting part 3. Furthermore, in the orientation of the second slot 311, there is a gap between the projection of the first mounting part 2 and the limiting part 3, and the opening angle of the door can be controlled by controlling the size of the gap.
[0034] Please continue to refer to the reference. Figure 2 , Figure 2 This is a schematic diagram of another embodiment of the limiting device of this application. In another embodiment, the plate 11 has a weight reduction hole 8 that penetrates the plate 11 and connects the two plate surfaces. The weight reduction hole 8 can reduce the material consumption of the tooling body 1, thereby reducing costs and weight.
[0035] In one embodiment of this application, the limiting part 3 includes a sleeve 32, and the magnetic element 4 is disposed inside the sleeve 32.
[0036] Specifically, the magnetic component 4 can be a cylindrical magnet. In order to better install and fix the cylindrical magnet, the limiting part 3 can be a cylindrical sleeve 32 with three-sided sealing. The second mounting groove 31 is a cylindrical mounting groove. The sealing bottom surface of the sleeve 32 is connected to the tooling body 1.
[0037] In one specific embodiment, the limiting part 3 can be composed of a three-sided sealed cylindrical sleeve 32 with an outer diameter of 7.5 mm, an inner diameter of 6.5 mm, and a height of 14 mm. Its sealed bottom surface is welded to the tooling body 1. The magnetic component 4 can be a cylindrical magnet with a radius of 6 mm and a height of 12 mm. When the tooling body 1 is fixing the car door, it is attracted by the magnetic component 4, and the limiting part 3 contacts the car door. This can improve or avoid the wear caused by the collision between the car door and the magnetic component 4, improve the service life of the magnetic component 4, and improve stability. In another specific embodiment, the internal structure of the sleeve 32 can also include a locking hole, with the remaining space filled with solid material. It is connected to the tooling body 1 by bolts passing through the locking hole. The radial dimension of the second mounting groove 31 is larger than the radial dimension of the locking hole, so as to form a step at the connection between the second mounting groove 31 and the locking hole, thereby facilitating the magnetic component 4 to be magnetically attracted to the step. The magnetic component 4 is embedded in the second mounting groove 31 and magnetically attracted to the step, causing the magnetic forces of the magnetic component 4 in the circumferential direction and the direction towards the step to cancel each other out. This enhances the magnetic force of the magnetic component 4 in the direction away from the step, thereby improving the attraction force to the car door and improving reliability and stability. In another specific embodiment, the structure and dimensions of the sleeve 32 can also include other sizes and shapes, such as an outer diameter of 7mm, an inner diameter of 6mm, a height of 13mm, or the shape of the sleeve 32 as a quadrilateral prism, etc. The specific design can be improved according to the actual process conditions, which will not be elaborated here.
[0038] Please continue to refer to the reference. Figure 3 , Figure 3 This is a schematic diagram of another embodiment of the limiting device of this application. Furthermore, in order to protect the magnetic component 4 that contacts the car door, the limiting device 100 also includes a protective component 7, which covers the limiting portion 3 and keeps the magnetic component 4 at a distance from the car door when it is attracted to the car door.
[0039] In one specific embodiment, the protective element 7 can be a sticker. Applying a sticker to the limiting part 3 can improve or prevent the magnetic force of the magnetic element 4 from becoming too strong, thus increasing the difficulty of opening the car door. It can also reduce or prevent damage caused by collision between the car door and the magnetic element 4. In addition, since paint may get into the joint between the car door and the limiting part 3 when the car door is fixed, resulting in high cleaning costs, covering the limiting part 3 with a sticker only requires replacing the sticker, thereby reducing cleaning costs and lowering process costs.
[0040] Combination Figure 1 and Figure 2In one embodiment of this application, the first mounting groove 21 is a through groove extending along the first direction D1. The first mounting groove 21 is provided with two opposing side walls 212 and a bottom wall 213 connecting the two side walls 212. The first slot opening 211 is located between the two side walls 212. The distance between the two side walls 212 is between 4.5mm and 5.5mm, and the distance between the bottom wall 213 and the first slot opening 211 is between 5.5mm and 6.5mm. The first direction D1 is perpendicular to the orientation of the first slot opening 211 and the orientation of the second slot opening 311.
[0041] Specifically, the first mounting groove 21 can be connected to the fixture body 1 via the side wall 212 or the bottom wall 213. The distance between the two side walls 212 is the width of the first groove 211, which is between 4.5mm and 5.5mm, such as 4.5mm, 4.7mm, 4.9mm, 5.1mm, 5.3mm, 5.5mm, etc., to facilitate matching with the door stop and improve the stability of the connection. The distance between the bottom wall 213 and the first groove 211 is the depth of the first mounting groove 21, which is between 5.5mm and 6.5mm, such as 5.5mm, 5.7mm, 5.9mm, 6.1mm, 6.3mm, 6.5mm, etc., to facilitate engaging the door stop within the groove. The first direction D1 is parallel to the length direction of the door stop, allowing the door stop to pass through the first groove 211 into the first mounting groove 21 on the fixture body 1. It should be noted that the thickness of the door stop portion of the vehicle body and the size of the portion that can be partially embedded in the first mounting groove 21 can be between 4.5mm and 5.5mm and between 5.5mm and 6.5mm, respectively. If the width of the first groove 211 is less than 4.5mm or the depth of the first mounting groove 21 is less than 5.5mm, the first mounting groove 21 may be too small to accommodate part of the door stop portion, thus preventing the limiting device 100 from being installed on the door stop portion. If the width of the first groove 211 is greater than 5.5mm or the depth of the first mounting groove 21 is greater than 6.5mm, the first mounting groove 21 may be too large and detach from the door stop portion.
[0042] In one embodiment of this application, the limiting device 100 further includes a second mounting part 5, which is connected to one end of the tooling body 1 away from the limiting part 3, and is used to hook into the mounting hole of the vehicle body.
[0043] When in use, the installation steps of the limiting device 100 are as follows: first, open the car door and hook the second mounting part 5 onto the process hole of the car body; then, snap the first mounting part 2 onto the door stop of the main body of the car body; finally, close the car door. Because the limiting part 3 is provided with a magnetic part 4, the car door will automatically be attracted to the limiting part 3 or the magnetic part 4 to form a fixed position.
[0044] In one embodiment of this application, the second mounting part 5 includes an extension part 51 and a hook part 52. The first end 511 of the extension part 51 is connected to the edge of the tooling body 1, the second end 512 of the extension part 51 extends in a direction away from the tooling body 1, and the hook part 52 is disposed at the second end 512 of the extension part 51 and extends toward one side of the limiting part 3.
[0045] Specifically, the first end 511 and the second end 512 are located at opposite ends of the extension 51, respectively, and are used to connect the hook part 52 and the tooling body 1. The hook part 52 is used to hook onto the process hole of the vehicle body to improve the stability of the limiting device 100 installed on the door stop.
[0046] Furthermore, the length of the hook portion 52 extends between 18mm and 22mm, such as 18mm, 19mm, 20mm, 21mm, 22mm, etc., to improve stability.
[0047] The hook portion 52 may include a hook with a hook-like structure, and the length of the hook portion 52 is the depth of the hook. It should be noted that the depth of the hook is related to the stability of the hook in the process hole on the vehicle body. If the depth is less than 18mm, that is, the depth is too small, it may cause the hook to detach from the process hole; if the depth is greater than 22mm, that is, the depth is too large, it may cause difficulties and inconvenience in installation and removal.
[0048] In one specific embodiment, the second mounting part 5 can be integrally formed with the tooling body 1, that is, it can be punched from the same piece of steel plate, and the thickness of the steel plate can be 4mm. In another specific embodiment, the second mounting part 5 can also be independently connected to the tooling body 1.
[0049] In one embodiment of this application, a connecting section 6 is provided on one end of the tooling body 1 opposite to the second mounting part 5, and a limiting part 3 is provided on the connecting section 6.
[0050] Specifically, the connecting segment 6 can be used to connect the limiting part 3 and the tooling body 1. In one specific embodiment, the connecting segment 6 can be integrally formed with the tooling body 1; in another specific embodiment, the connecting segment 6 can also be independently connected to the tooling body 1.
[0051] The limiting device 100 of this embodiment is connected to the vehicle body via the first mounting part 2 and the second mounting part 5, ensuring a secure installation suitable for fully automated robotic painting production and high reliability. Since the opening angle of the car door can be controlled by the distance between the first mounting part 2 and the limiting part 3, the opening angle of the car door meets the requirements, resulting in qualified film thickness after robotic painting. The limiting device 100 consists only of the tooling body 1, the limiting part 3, the magnetic component 4, the first mounting part 2, and the second mounting part 5. It is not only simple in structure, compact and lightweight, and low in cost, but also easy to operate. Installation and disassembly times are consistent with the company's production process rhythm, facilitating repeated use. Furthermore, the limiting device 100 of this embodiment is fixed to the door stop of the vehicle body and connected to the inner panel interior trim area of the door, which are non-exterior surfaces, thus improving the paint quality pass rate.
[0052] It should be noted that the terms "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. Similarly, the terms "parallel" and "perpendicular" do not imply that the components are absolutely parallel or perpendicular, but rather that they can have a certain angular deviation. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted. In addition, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships that are commonly used when the product of this application is in use. They are only for the purpose of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0053] It is understood that the term "multiple" in this document means at least two, such as two, three, etc., unless otherwise specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.
[0054] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A limiting device, characterized in that, include: Tooling body (1); The first mounting part (2) is connected to the tooling body (1). The first mounting part (2) forms a first mounting groove (21), which is used to limit the door stop on the body of the vehicle. A limiting part (3) is provided on the tooling body (1) for limiting the door of the vehicle. The limiting part (3) is formed with a second mounting groove (31). A magnetic component (4) is disposed in the second mounting groove (31). The magnetic component (4) is used to attract the car door so that the limiting part (3) or the magnetic component (4) is in stable contact with the car door.
2. The limiting device according to claim 1, characterized in that, The orientation of the first slot (211) of the first mounting groove (21) is perpendicular to the orientation of the second slot (311) of the second mounting groove (31).
3. The limiting device according to claim 2, characterized in that, The limiting part (3) includes a sleeve (32), and the magnetic element (4) is disposed inside the sleeve (32).
4. The limiting device according to claim 3, characterized in that, The first mounting groove (21) is a through groove extending along a first direction. The first mounting groove (21) is provided with two opposing side walls (212) and a bottom wall (213) connecting the two side walls (212). The first slot opening (211) is located between the two side walls (212). The distance between the two side walls (212) is between 4.5 mm and 5.5 mm, and the distance between the bottom wall (213) and the first slot opening (211) is between 5.5 mm and 6.5 mm. The first direction is perpendicular to the orientation of the first slot (211) and the orientation of the second slot (311).
5. The limiting device according to claim 3, characterized in that, The tooling body (1) is set as a plate (11), and the orientation of the first slot (211) is perpendicular to the plane where the plate (11) is located.
6. The limiting device according to any one of claims 1-5, characterized in that, The limiting device further includes a second mounting part (5), which is connected to one end of the tooling body (1) away from the limiting part (3). The second mounting part (5) is used to hook into the mounting hole of the vehicle body.
7. The limiting device according to claim 6, characterized in that, The second mounting part (5) includes an extension part (51) and a hook part (52). The first end (511) of the extension part (51) is connected to the edge of the tooling body (1). The second end (512) of the extension part (51) extends in a direction away from the tooling body (1). The hook part (52) is provided at the second end (512) of the extension part (51) and extends toward one side of the limiting part (3).
8. The limiting device according to claim 7, characterized in that, The length of the hook portion (52) is between 18 mm and 22 mm.
9. The limiting device according to claim 6, characterized in that, The tooling body (1) has a connecting section (6) at one end opposite to the second mounting part (5), and the limiting part (3) is disposed on the connecting section (6).
10. The limiting device according to claim 6, characterized in that, The limiting device also includes a protective element (7), which covers the limiting part (3) and keeps the magnetic element (4) at a distance from the door when it attracts the door.