Positioning tool and vehicle triangular guide rail mounting positioning tool

Abstract

The utility model discloses a limit frock and vehicle triangular guide rail installation limit frock relates to vehicle assembly technical field. The limit frock of the utility model is used for installing the workpiece to be installed to the car body sheet metal, and the car body sheet metal has a plurality of positioning holes, and the limit frock includes frock main part, first connecting part and second connecting part, and the first connecting part includes a plurality of positioning protrusions, and each positioning protrusion is arranged at intervals, and the positioning protrusion is inserted in the positioning hole to restrict the relative movement between the frock main part and the car body sheet metal, and the second connecting part is used for being detachably connected with the workpiece to be installed, and the second connecting part is configured to be capable of restricting the relative movement between the workpiece to be installed and the car body sheet metal during assembly. The limit frock of the present application can realize the anti -rotation and positioning of the workpiece to be installed, and effectively avoid the rotational deviation of the workpiece to be installed due to external force during assembly.

Description

Technical Field

[0001] This utility model relates to the field of vehicle assembly technology, and in particular to a limiting fixture and a vehicle triangular guide rail installation limiting fixture. Background Technology

[0002] Currently, due to the edge wrapping and coating processes, the triangular guide rail assembly cannot be welded to the door sheet metal. It can only be installed and fixed by assembling it onto the door sheet metal during final assembly.

[0003] In some assembly processes, the triangular guide rail assembly is connected to the door sheet metal using bolts. When tightening the bolts with an electric screwdriver, the bolts can easily rotate, causing the triangular guide rail to rotate as well. This misalignment of the triangular guide rail can affect the installation of trim panels and bright strips, resulting in a high defect rate during door assembly. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a limiting fixture that can prevent rotation and position the workpiece to be installed, effectively avoiding rotational deviation of the workpiece due to external forces during the assembly process.

[0005] The first aspect of this application provides a limiting tooling.

[0006] The second aspect of this application provides another limiting tooling.

[0007] The third aspect of this application provides a vehicle triangular guide rail installation limiting fixture.

[0008] According to a first aspect of the present invention, the limiting fixture is used to install a workpiece to be installed onto a vehicle body sheet metal, wherein the vehicle body sheet metal has a plurality of positioning holes, and the limiting fixture includes a fixture body, a first connecting part, and a second connecting part. The first connecting part includes a plurality of positioning protrusions, each of which is spaced apart and inserted into the positioning hole to restrict the relative movement between the tooling body and the vehicle body sheet metal; The second connecting part is used for detachable connection with the workpiece to be installed, and the second connecting part is configured to restrict the relative movement between the workpiece to be installed and the vehicle body sheet metal during assembly.

[0009] The limiting fixture according to the embodiment of this utility model has at least the following beneficial effects: The limiting fixture provided in this application can prevent rotation and position the workpiece to be installed, effectively avoiding rotational deviation caused by external forces during assembly, and ensuring the accuracy and stability of its installation position. This design not only improves assembly efficiency and accuracy but also reduces reliance on operator skills, making it suitable for high-volume, high-paced production line environments. Furthermore, the limiting fixture has a simple structure, is easy to assemble and disassemble, facilitates maintenance and replacement, and has low operating costs.

[0010] According to some embodiments of the present invention, the second connecting part includes a plurality of limiting protrusions, which can be connected to different sides of the workpiece to be installed in order to restrict the rotation of the workpiece to be installed; Alternatively, the second connecting portion includes at least one limiting protrusion, and the workpiece to be installed includes a limiting hole, with the limiting protrusion inserted into the limiting hole to restrict the rotation of the workpiece to be installed.

[0011] According to some embodiments of the present invention, the workpiece to be installed has a deflection tendency along a first direction. The workpiece to be installed includes a first side and a second side arranged sequentially along the first direction. The second connecting portion includes at least one limiting protrusion. The limiting protrusion abuts against the second side of the workpiece to be installed to limit the deflection of the workpiece to be installed along the first direction.

[0012] According to some embodiments of the present invention, the first connecting part and the second connecting part are disposed on the same surface of the tooling body. The second connecting part is configured such that when the tooling body is connected to the vehicle body sheet metal, the tooling body is located on one side of the vehicle body sheet metal, and the second connecting part can extend to the other side of the vehicle body sheet metal and connect with the workpiece to be installed.

[0013] According to some embodiments of the present invention, when the first connecting part is connected to the vehicle body sheet metal, the projection area of ​​the second connecting part along the thickness direction of the vehicle body sheet metal is located outside the projection area of ​​the vehicle body sheet metal, so that the second connecting part can be connected to the workpiece to be installed.

[0014] According to some embodiments of the present invention, the tooling body has a weight reduction hole, and the limiting tooling further includes at least one support member, which is disposed in the weight reduction hole, and both ends of the support member are respectively connected to the hole wall of the weight reduction hole.

[0015] According to some embodiments of the present invention, the limiting fixture further includes a handrail component. The fixture body includes a first surface and a second surface opposite to each other. The first connecting portion and the second connecting portion are connected to the first surface. The handrail component is connected to the second surface. The fixture body has a first region connected to the first connecting portion and a second region connected to the second connecting portion. One end of the handrail component is connected to the first region, and the other end of the handrail component is connected to the second region.

[0016] According to some embodiments of the present invention, the limiting fixture further includes a magnetic suction component, which is connected to the main body of the fixture and is used for magnetic connection with the vehicle body sheet metal.

[0017] According to a second aspect of the present invention, the limiting fixture is used to install a workpiece to be installed onto a vehicle body sheet metal, wherein the vehicle body sheet metal has at least one positioning hole, and the limiting fixture includes a fixture body, a first connecting part, and a second connecting part. The second connecting part is used for detachable connection with the workpiece to be installed, and the second connecting part is configured to restrict the rotation of the workpiece to be installed; The first connecting part includes at least one positioning protrusion, which is inserted into the positioning hole. The positioning protrusion has an abutting surface that abuts against the wall of the positioning hole and can restrict the rotation of the tooling body.

[0018] The vehicle triangular guide rail installation limiting fixture according to the third aspect embodiment of the present invention includes the limiting fixture mentioned in any of the above embodiments.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the limiting tooling used in the assembly of the workpiece to be installed and the sheet metal of the vehicle body according to an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of region A in the middle; Figure 3 for Figure 1 An exploded view of the structure shown; Figure 4 This is a schematic diagram illustrating the cooperation between the workpiece to be installed and the limiting fixture in an embodiment of this utility model. Figure 5This is a schematic diagram of the limiting tooling according to an embodiment of the present utility model; Figure 6 This is a structural schematic diagram of the limiting tooling from another angle, representing an embodiment of the present utility model.

[0021] Figure label: Limiting fixture 10; vehicle body sheet metal 20; positioning hole 21; workpiece to be installed 30; first mounting part 31; second mounting part 32; first side 33; second side 34; bolt setting point 35; Tooling body 100; First area 101; Second area 102; Weight reduction hole 110; First connecting part 200; positioning protrusion 210; Second connecting part 300; limiting protrusion 310; Support component 400; Handrail component 500; Magnetic suction element 600; Detailed Implementation The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] Currently, due to the edge wrapping and coating processes, the triangular guide rail assembly of the concealed water cutter cannot be welded to the door sheet metal. It can only be installed and fixed by assembling it into the door sheet metal during final assembly.

[0027] In some assembly processes, the triangular guide rail assembly is connected to the door sheet metal using bolts. When tightening the bolts with an electric screwdriver, the bolts can easily rotate, causing the triangular guide rail to rotate as well. This misalignment of the triangular guide rail can affect the installation of trim panels and bright strips, resulting in a high defect rate during door assembly.

[0028] To solve the above problems, such as Figures 1 to 3 As shown, this application proposes a limiting fixture 10, which is used to install the workpiece 30 to be installed onto the vehicle body sheet metal 20. The workpiece 30 can be the aforementioned triangular guide rail, or other components that need to prevent rotation. During installation, the limiting fixture 10 provides circumferential constraint to the workpiece to prevent it from rotating during fastening. The vehicle body sheet metal 20 can be the aforementioned door sheet metal, or sheet metal parts from other parts such as the vehicle body sheet metal.

[0029] Specifically, the limiting fixture 10 includes a fixture body 100, a first connecting part 200, and a second connecting part 300, such as... Figure 3 As shown, the tooling body 100 has a flat plate structure with two surfaces arranged opposite each other and a side connecting the two surfaces. For ease of description, the two surfaces of the tooling body 100 are named the first surface and the second surface, respectively. The first connecting part 200 and the second connecting part 300 are both provided on the first surface of the tooling body 100.

[0030] The first connecting portion 200 is used for detachable connection with the vehicle body sheet metal 20, and the first connecting portion 200 is configured to limit the relative movement between the tooling body 100 and the vehicle body sheet metal 20. For example, as shown... Figure 3 and Figure 4 As shown, the first connecting portion 200 includes a plurality of positioning protrusions 210, which are spaced apart and can be arranged as follows: Figure 4The triangular distribution shown can also be linear or circular (not shown in the figure). Multiple positioning holes 21 are correspondingly provided on the vehicle body sheet metal 20, and the shape of each positioning hole 21 matches the cross-sectional shape of the positioning protrusion 210. If the cross-section of the positioning protrusion 210 is square, then the positioning hole 21 is also square; if the cross-section of the positioning protrusion 210 is circular, then the positioning hole 21 is also circular. The positioning protrusion 210 can be inserted into the positioning hole 21. Through the one-to-one insertion of multiple positioning protrusions 210 into multiple positioning holes 21, the positioning and circumferential limiting between the tooling body 100 and the vehicle body sheet metal 20 are achieved, preventing the tooling body 100 from rotating or moving during use.

[0031] It should be noted that the positioning hole 21 can be an existing hole on the vehicle body sheet metal 20, used for assembly with other components in subsequent assembly. During the assembly of the workpiece 30 to be installed, the limiting fixture 10 can use the existing hole on the vehicle body sheet metal 20 to prevent the workpiece 30 from rotating, without the need for additional holes to be drilled on the vehicle body sheet metal 20. Alternatively, the positioning hole 21 can also be an additional hole added to prevent the workpiece 30 from rotating.

[0032] The second connecting part 300 is used for detachable connection with the workpiece 30 to be installed. The second connecting part 300 is configured to restrict the relative movement between the workpiece 30 to be installed and the vehicle body sheet metal 20. It is understood that when the first connecting part 200 of the limiting fixture 10 is connected to the vehicle body sheet metal 20, the second connecting part 300 is connected to the workpiece 30 to be installed. Thus, during the assembly process of the workpiece 30 to be installed, the workpiece 30 to be installed, the limiting fixture 10, and the vehicle body sheet metal 20 are connected as a single structure, forming a stable positioning relationship, thereby avoiding the problem of workpiece rotational misalignment caused by tightening torque during assembly. After the workpiece 30 to be installed is fastened to the vehicle body sheet metal 20 with bolts, the limiting fixture 10 is removed from the vehicle body sheet metal 20 and the workpiece 30 to be installed, completing the assembly of the vehicle body sheet metal 20 and the workpiece 30 to be installed.

[0033] The configuration of the second connecting part 300 can also be adapted to the structural features of the workpiece 30 to be installed. For example, such as Figure 3 In the embodiment shown, the workpiece 30 to be installed has a long strip-shaped first mounting portion 31 and a triangular second mounting portion 32. The first mounting portion 31 is used to connect with the body sheet metal, and the second mounting portion 32 is used to connect with the window trim panel, etc. Figure 4 In the illustrated embodiment, the workpiece 30 to be installed has multiple bolt mounting points 35. The operator needs to tighten the bolts at these bolt mounting points 35 using an electric screwdriver, which will cause the workpiece 30 to have a first direction (e.g., ...) around the bolt mounting points 35. Figure 4The deflection trend (shown by the dashed arrow) is as follows. It should be noted that this deflection trend can be derived from the actual assembly data of the assembled workpiece, or it can be derived by analyzing the rotation direction of the screwdriver and the force direction of the workpiece 30 to be installed.

[0034] like Figure 4 As shown, the workpiece 30 to be installed includes a first side 33 and a second side 34 arranged sequentially along a first direction. The first side 33 and the second side 34 intersect each other. The second connecting portion 300 includes a plurality of limiting protrusions 310, which abut against different sides of the workpiece 30 to be installed. Specifically, as shown... Figure 4 As shown, part of the limiting protrusion 310 abuts against the first side 33, and part of the limiting protrusion 310 abuts against the second side 34, thereby restricting the rotation and movement of the workpiece 30 to be installed.

[0035] It should be noted that in this embodiment, since the first side 33 and the second side 34 of the workpiece 30 to be installed abut against different limiting protrusions 310, the rotation of the workpiece 30 to be installed along the first direction or in the opposite direction of the first direction is effectively restricted, thereby achieving bidirectional anti-rotation and positioning.

[0036] Alternatively (not shown in the figure), the second connecting portion 300 includes at least one limiting protrusion 310, and the workpiece 30 to be installed includes a limiting hole. The limiting protrusion 310 is inserted into the limiting hole, and circumferential limiting between the workpiece 30 to be installed and the limiting fixture 10 is achieved through the insertion. The limiting protrusion 310 can be cylindrical or non-cylindrical. It is understood that this kind of insertion-fit limiting structure can achieve bidirectional anti-rotation and positioning of the workpiece 30 to be installed.

[0037] In other embodiments (not shown in the figures), in response to the deflection tendency of the workpiece 30 to be installed along the first direction, the second connecting portion 300 may be configured to provide a unidirectional limiting structure only in the first direction. For example, at least one limiting protrusion 310 may be provided at a corresponding position on the second side 34 of the workpiece 30 to be installed. The limiting protrusion 310 abuts against the second side 34 of the workpiece 30 to be installed in order to limit the deflection of the workpiece 30 to be installed along the first direction.

[0038] Based on the above, the limiting fixture 10 provided in this application can prevent rotation and position the workpiece 30 to be installed, effectively avoiding rotational deviation of the workpiece 30 due to external forces during assembly, and ensuring the accuracy and stability of its installation position. This design not only improves assembly efficiency and accuracy but also reduces reliance on operator skills, making it suitable for high-volume, high-paced production line environments. Furthermore, the limiting fixture 10 has a simple structure, is easy to assemble and disassemble, facilitates maintenance and replacement, and has low operating costs.

[0039] In some embodiments, since the workpiece 30 to be installed needs to be attached to one side of the vehicle body sheet metal 20, the fixture body 100 of the limiting fixture 10 needs to be located on the other side of the vehicle body sheet metal 20 to avoid spatial interference with the workpiece 30 to be installed. The first connecting part 200 and the second connecting part 300 are located on the same surface of the fixture body 100. When the first connecting part 200 is connected to the vehicle body sheet metal 20, the fixture body 100 is located on the side of the vehicle body sheet metal 20 away from the workpiece 30 to be installed. The second connecting part 300 extends to the other side of the vehicle body sheet metal 20 and connects with the workpiece 30 to be installed, thereby achieving precise positioning and limiting of the workpiece.

[0040] In such Figure 2 and Figure 3 In the illustrated embodiment, the second mounting portion 32 of the workpiece 30 to be mounted extends relative to the vehicle body sheet metal 20, thereby causing the upper portion of the tooling body 100 to also extend relative to the vehicle body sheet metal 20, so that the second connecting portion 300 can extend to the other side of the vehicle body sheet metal 20 and connect with the second mounting portion 32. In other embodiments, if the workpiece 30 to be mounted does not extend beyond the vehicle body sheet metal 20, a clearance hole can be provided on the vehicle body sheet metal 20, allowing the second connecting portion 300 to pass through the clearance hole and connect with the workpiece 30 to be mounted, thereby achieving a limiting function.

[0041] In some embodiments, such as Figure 2 and Figure 3 As shown, the workpiece 30 to be installed includes a first mounting part 31 and a second mounting part 32. The projection area of ​​the first mounting part 31 along the thickness direction of the vehicle body sheet metal 20 is located within the projection area of ​​the vehicle body sheet metal 20, and the first mounting part 31 is used to connect with the vehicle body sheet metal 20. The projection area of ​​the second mounting part 32 along the thickness direction of the vehicle body sheet metal 20 is located outside the projection area of ​​the vehicle body sheet metal 20, and the second mounting part 32 is used to connect with the window trim panel, etc. When the first connecting part 200 of the limiting tooling 10 of this application is connected to the vehicle body sheet metal 20, the projection area of ​​the second connecting part 300 along the thickness direction of the vehicle body sheet metal 20 is located outside the projection area of ​​the vehicle body sheet metal 20, and is correspondingly arranged with the second mounting part 32, so that the second connecting part 300 can connect with the second mounting part 32 to achieve the limiting and fixing of the workpiece 30 to be installed.

[0042] In some embodiments, the tooling body 100 is provided with weight reduction holes 110, such as... Figure 5As shown, a weight-reducing hole 110 is provided through the main body 100 of the tooling to reduce the overall weight of the limiting tooling 10, making it easier for operators to use and hold. To prevent the weight-reducing hole 110 from adversely affecting the structural strength of the main body 100 of the tooling, the limiting tooling 10 is also provided with at least one support member 400. The support member 400 is disposed in the weight-reducing hole 110, and its two ends are respectively connected to the hole wall of the weight-reducing hole 110 to enhance the structural rigidity of the main body 100 of the tooling, ensuring that the limiting tooling 10 does not deform or fail during repeated use. Figure 5 In the embodiment shown, there are two support members 400, which are intersected to form a stable support structure, further improving the bending and torsional resistance of the tooling body 100.

[0043] In some embodiments, the limiting fixture 10 further includes a handle 500, which includes a first surface and a second surface. A first connecting portion 200 and a second connecting portion 300 are both connected to the first surface, and the handle 500 is connected to the second surface to facilitate gripping and applying force by the operator. Further, the fixture body 100 has a first region 101 connected to the first connecting portion 200 and a second region 102 connected to the second connecting portion 300, such as... Figure 6 As shown, the first region 101 is located below the second region 102. One end of the handrail 500 is connected to the first region 101 of the second surface, and the other end is connected to the second region 102 of the second surface, so that the handrail 500 extends along the height direction of the tooling body 100 to form an ergonomic grip structure, effectively reducing operator fatigue.

[0044] Furthermore, the grip portion of the armrest component 500 may be provided with an anti-slip texture or an elastic wrapping layer to increase the friction between the hand and the grip portion and improve grip stability.

[0045] In some embodiments, such as Figure 6 As shown, the limiting fixture 10 also includes a magnetic suction component 600, which is connected to the fixture body 100. The magnetic suction component 600 is used to attract the limiting fixture 10 onto the vehicle body sheet metal 20, preventing the limiting fixture 10 from accidentally slipping or shifting during operation, thus improving the safety and efficiency of the installation work. The magnetic suction component 600 can be disposed adjacent to the first connecting portion 200, so that the adsorption center of the magnetic suction component 600 is close to the connection position between the fixture body 100 and the vehicle body sheet metal 20, improving the overall installation stability. The magnetic suction component 600 can be disposed on the first surface to shorten the distance between the magnetic suction component 600 and the vehicle body sheet metal 20, enhancing the adsorption force. Alternatively, the magnetic suction component 600 can also be disposed on the second surface. The limiting fixture 10 can be made of plastic material, and the magnetic field of the magnetic suction component 600 can penetrate the fixture body 100 and act on the vehicle body sheet metal 20, so that the fixture body 100 is clamped between the vehicle body sheet metal 20 and the magnetic suction component 600, achieving fixation.

[0046] The second aspect of this application proposes another limiting fixture 10, which is also used to install the workpiece 30 to be installed onto the vehicle body sheet metal 20. The difference from the first aspect of the embodiment is that the vehicle body sheet metal 20 may be provided with at least one positioning hole 21, and the first connecting part 200 is provided with at least one positioning protrusion 210.

[0047] For example, the first connecting portion 200 includes a positioning protrusion 210, which has a non-cylindrical structure, such as a polygonal prism or an elliptical cylinder (not shown in the figure). A positioning hole 21 matching the non-cylindrical structure is correspondingly provided on the vehicle body sheet metal 20. The shape of the positioning hole 21 is adapted to the cross-section of the positioning protrusion 210. The positioning protrusion 210 has an abutting surface for abutting against the wall of the positioning hole 21. If the positioning protrusion 210 is a polygonal prism, the abutting surface is flat; if the positioning protrusion 210 is an elliptical cylinder, the abutting surface is curved.

[0048] When the positioning protrusion 210 is inserted into the positioning hole 21, the abutting surface abuts against the wall of the positioning hole 21. Due to the circumferential asymmetry of the non-cylindrical structure, after the abutting surface abuts against the wall of the positioning hole, it can effectively prevent the tooling body 100 from rotating circumferentially relative to the vehicle body sheet metal 20, achieving reliable anti-rotation and positioning. It is understandable that the first connecting part 200 can also be provided with multiple non-cylindrical positioning protrusions 210 to further improve the stability of the limit.

[0049] The third aspect of this application also proposes a vehicle triangular guide rail installation limiting fixture, which includes the limiting fixture described in any of the foregoing embodiments. In the third aspect embodiment, the vehicle triangular guide rail installation limiting fixture is used for assembling the triangular guide rail with the vehicle door sheet metal.

[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A limiting fixture for mounting a workpiece to a vehicle body sheet metal, wherein the vehicle body sheet metal has multiple positioning holes, characterized in that... The limiting fixture includes a fixture body, a first connecting part, and a second connecting part; The first connecting part includes a plurality of positioning protrusions, each of which is spaced apart and inserted into the positioning hole to restrict the relative movement between the tooling body and the vehicle body sheet metal; The second connecting portion is used for detachable connection with the workpiece to be installed, and the second connecting portion is configured to restrict the relative movement between the workpiece to be installed and the vehicle body sheet metal during assembly.

2. The limiting fixture according to claim 1, characterized in that, The second connecting part includes a plurality of limiting protrusions, which can be connected to different sides of the workpiece to be installed in order to restrict the rotation of the workpiece to be installed; Alternatively, the second connecting portion includes at least one limiting protrusion, and the workpiece to be installed includes a limiting hole, with the limiting protrusion inserted into the limiting hole to restrict the rotation of the workpiece to be installed.

3. The limiting fixture according to claim 1, characterized in that, The workpiece to be installed has a deflection tendency along a first direction. The workpiece to be installed includes a first side and a second side arranged sequentially along the first direction. The second connecting portion includes at least one limiting protrusion. The limiting protrusion abuts against the second side of the workpiece to be installed to limit the deflection of the workpiece to be installed along the first direction.

4. The limiting fixture according to claim 1, characterized in that, The first connecting part and the second connecting part are disposed on the same surface of the tooling body. The second connecting part is configured such that when the tooling body is connected to the vehicle body sheet metal, the tooling body is located on one side of the vehicle body sheet metal, and the second connecting part can extend to the other side of the vehicle body sheet metal and connect with the workpiece to be installed.

5. The limiting fixture according to claim 1, characterized in that, When the first connecting part is connected to the vehicle body sheet metal, the projection area of ​​the second connecting part along the thickness direction of the vehicle body sheet metal is located outside the projection area of ​​the vehicle body sheet metal, so that the second connecting part can be connected to the workpiece to be installed.

6. The limiting fixture according to claim 1, characterized in that, The main body of the tooling has a weight-reducing hole, and the limiting tooling also includes at least one support member, which is disposed in the weight-reducing hole, and the two ends of the support member are respectively connected to the hole wall of the weight-reducing hole.

7. The limiting fixture according to claim 1, characterized in that, The limiting fixture also includes a handrail component. The main body of the fixture includes a first surface and a second surface opposite to each other. The first connecting part and the second connecting part are connected to the first surface, and the handrail component is connected to the second surface. The tooling body has a first region connected to the first connecting part and a second region connected to the second connecting part. One end of the handrail is connected to the first region, and the other end of the handrail is connected to the second region.

8. The limiting fixture according to claim 1, characterized in that, The limiting fixture also includes a magnetic suction component, which is connected to the main body of the fixture and is used to magnetically connect with the vehicle body sheet metal.

9. A limiting fixture for mounting a workpiece to a vehicle body sheet metal, wherein the vehicle body sheet metal has at least one positioning hole, characterized in that... The limiting fixture includes a fixture body, a first connecting part, and a second connecting part; The second connecting part is used for detachable connection with the workpiece to be installed, and the second connecting part is configured to restrict the rotation of the workpiece to be installed; The first connecting part includes at least one positioning protrusion, which is inserted into the positioning hole. The positioning protrusion has an abutting surface that abuts against the wall of the positioning hole and can restrict the rotation of the tooling body.

10. A vehicle triangular guide rail installation limiting fixture, characterized in that, Includes the limiting fixture as described in any one of claims 1 to 9.

Images