Anti-dislocation device for accessories

Abstract

The utility model discloses an accessory dislocation prevention device which comprises a profiling limiting piece, and the profiling limiting piece comprises a profiling limiting hole and a limiting ejector pin arranged in the profiling limiting hole. The profiling limiting hole is a blind hole; and at least one limiting surface is arranged on the outer circular surface of the limiting ejector pin. According to the anti-dislocation device of the accessory, the product to be subjected to injection molding can be limited in the radial direction of the profiling limiting hole, and the product to be subjected to injection molding is prevented from deviating due to external force in the injection molding process; meanwhile, a corresponding process hole is usually formed during production of the product to be subjected to injection molding, so that the limiting ejector pin can be gradually embedded into the process hole of the product to be subjected to injection molding in the process that the product to be subjected to injection molding is embedded into the profiling limiting hole; therefore, the product to be subjected to injection molding can be limited in the circumferential direction of the profiling limiting hole.

Description

Technical Field

[0001] The utility model belongs to the technical field of positioning tooling, and in particular relates to an anti-dislocation device for an accessory. Background Art

[0002] With the continuous change of automobile design concepts, the application of automobile glass sunroof assemblies has gradually become common. Existing sunroof glass requires the pre-positioning between the clip pins and the assembly frame before the sunroof glass can be used in the sunroof frame assembly system.

[0003] In order to improve the assembly accuracy of the sunroof glass, during the integrated injection molding process of the sunroof glass and the clip nail column, it is also necessary to use the corresponding external profiling positioning device to fix the clip nail column to prevent the clip nail column from offset during injection molding, thereby effectively improving the injection molding accuracy of the sunroof glass and the clip nail column.

[0004] However, in actual use, it was found that this type of external profiling positioning device still has the following problems:

[0005] 1) The limiting effect of the external profiling positioning device is poor. During injection molding, the clamping claws of the clip pin are easily impacted by the strong material flow and deflected, resulting in unqualified part dimensions.

[0006] 2) The external contour positioning device cannot provide a unique limit angle for the clip pin. During operation, the operator cannot immediately determine the installation angle of the clip pin. Even if the clip pin is rotated 20° to 90° around its own axis, it can still be installed in the external contour positioning device, which easily increases the probability of part scrapping. Utility Model Content

[0007] The technical problems to be solved by the present invention include: how to provide an anti-misalignment device for an accessory to solve the problems that the clip nail column is easily offset during injection molding and the high installation error rate.

[0008] In order to solve the above technical problems, the technical solutions adopted by the present invention include:

[0009] An anti-dislocation device for an accessory includes a contoured limiting member, wherein the contoured limiting member includes a contoured limiting hole and a limiting ejector pin disposed in the contoured limiting hole;

[0010] The profiled limiting hole is a blind hole;

[0011] At least one limiting surface is provided on the outer circumferential surface of the limiting ejector pin.

[0012] Furthermore, two limiting surfaces are provided on the outer circumferential surface of the limiting ejector pin;

[0013] The limiting surface is parallel to the axis of the limiting ejector pin;

[0014] The two limiting surfaces are arranged opposite to each other.

[0015] Furthermore, it also includes a limiting base;

[0016] The limiting ejector pin is connected to the bottom of the contoured limiting hole through the limiting base.

[0017] Furthermore, the limiting base is a cylindrical structure;

[0018] The distance between the two limiting surfaces is smaller than the diameter of the limiting base.

[0019] Furthermore, the limiting ejector pin and the contoured limiting hole are coaxially arranged.

[0020] Furthermore, at least one limiting groove is provided on the inner wall of the profiled limiting hole;

[0021] The limiting groove is a half-through groove;

[0022] One end of the semi-through groove close to the opening end of the contoured limiting hole is an open end.

[0023] Furthermore, the extending direction of the limiting groove is parallel to the axial direction of the contoured limiting hole.

[0024] Furthermore, in the axial direction of the limiting ejector pin, the length of the limiting groove is greater than the length of the limiting ejector pin.

[0025] Furthermore, the end surface of the limiting ejector pin close to the open end of the contoured limiting hole is a curved surface.

[0026] Furthermore, the depth of the contoured limiting hole is at least 0.5 mm greater than the length of the limiting ejector pin.

[0027] The beneficial effects of the present invention include at least: the anti-dislocation device of the accessory provided by the present invention can limit the product to be injected in the radial direction of the imitation limiting hole by embedding the product to be injected into the imitation limiting hole, thereby preventing the product to be injected from being offset due to external force during the injection molding process; at the same time, the product to be injected usually forms a corresponding process hole during production, so in the process of embedding the product to be injected into the imitation limiting hole, the limiting surface will gradually fit into the process hole of the product to be injected, and when the limiting ejector pin is completely located inside the process hole, it can limit the product to be injected in the circumferential direction of the imitation limiting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of the profiled limiting member and the buckle nail column body in the present utility model;

[0029] Figure 2It is a cross-sectional view of the profiled limiting member in the present utility model;

[0030] Figure 3 This is a schematic structural diagram of the profiled limiting member and the buckle nail column body in the present utility model;

[0031] Description of labels:

[0032] 1. Profiling limit piece; 11. Profiling limit hole;

[0033] 2. Limiting ejector pin; 21. First limiting surface; 22. Second limiting surface;

[0034] 3. Limit base;

[0035] 4. Limiting slot;

[0036] 5. Clip nail column body; 51. Clip claw. DETAILED DESCRIPTION

[0037] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0038] The existing external profiling positioning device not only has a poor limiting effect, making the claws of the clip nail column easily deflected by the strong material flow during injection molding, resulting in unqualified part dimensions; the external profiling positioning device also cannot provide a unique limiting angle for the clip nail column, that is, when operating, the staff cannot determine the installation angle of the clip nail column in the first time. Even if the clip nail column is rotated 20° to 90° around its own axis, it can still be installed in the external profiling positioning device, which easily increases the probability of part scrapping.

[0039] Based on this, please refer to Figures 1 to 3 A device for preventing misalignment of an accessory is proposed, comprising a contoured stopper 1, comprising a contoured stopper hole 11 and a stopper pin 2 disposed within the contoured stopper hole 11; the contoured stopper hole 11 is a blind hole; the outer circumference of the stopper pin 2 is provided with at least one stopper surface; the depth of the contoured stopper hole 11 is at least 0.5 mm greater than the length of the stopper pin 2. Specifically, one end of the stopper pin 2 is disposed at the bottom of the contoured stopper hole 11; the other end of the stopper pin 2 is disposed opposite the open end of the contoured stopper hole 11; the stopper pin 2, via the stopper surface, can restrict the rotation of the product to be injected about the axis of the stopper pin 2.

[0040] It can be understood that the anti-misalignment device of the accessory of the present invention can limit the product to be injected in the radial direction of the imitation limiting hole 11 by embedding the product to be injected into the imitation limiting hole 11, thereby preventing the product to be injected from being offset due to external force during the injection molding process; at the same time, the product to be injected usually forms a corresponding process hole during production, so in the process of embedding the product to be injected into the imitation limiting hole 11, the limiting surface will also gradually fit into the process hole of the product to be injected, and when the limiting ejector pin 2 is completely located inside the process hole, it can limit the product to be injected in the circumferential direction of the imitation limiting hole 11; compared with the existing external imitation positioning device, it not only improves the stability of the product to be injected during the injection molding process, but also avoids the problem of scrapping parts caused by deviation in the assembly angle, thereby increasing material costs, and even improves assembly efficiency.

[0041] In some embodiments, a first limiting surface 21 and a second limiting surface 22 are provided on the outer circular surface of the limiting ejector 2; the first limiting surface 21 and the second limiting surface 22 are respectively parallel to the axis of the limiting ejector 2; the first limiting surface 21 and the second limiting surface 22 are arranged relative to each other. Specifically, the staff can freely adjust the number of limiting surfaces according to the shape of the process hole of the product to be injection molded to ensure that the product to be injection molded can better adapt to the limiting ejector 2. This design makes specific modifications to the structure of the limiting ejector 2. For some process holes with non-circular cross-sections, corresponding straight surfaces are provided on the outer surface of the limiting ejector 2, which is a cylindrical structure, so that it can adapt to the inner surface of the process hole. Therefore, when the product to be injection molded is subjected to torsion, the limiting surface can interfere with the inner surface of the process hole, thereby achieving the effect of limiting the product to be injection molded.

[0042] In some embodiments, the anti-misalignment device of the aforementioned accessory further includes a limiting base 3; the limiting ejector pin 2 is connected to the bottom of the imitation limiting hole 11 via the limiting base 3; the limiting base 3 is a cylindrical structure; and the distance between the first limiting surface 21 and the second limiting surface 22 is less than the diameter of the limiting base 3. This design further optimizes the structure of the limiting ejector pin 2 and the imitation limiting hole 11, as well as the connection between the two, ensuring that the distance between the first limiting surface 21 and the second limiting surface 22 is less than the diameter of the limiting base 3, thereby forming a corresponding limiting structure at the connection between the limiting ejector pin 2 and the limiting base 3; this limiting structure can limit the product to be injected in the depth direction of the imitation limiting hole 11, thereby being able to change the injection position of the product to be injected according to different injection molding requirements.

[0043] In some embodiments, the limiting pin 2 and the contour limiting hole 11 are coaxially arranged. This design can prevent the limiting pin 2 from being misaligned with the process hole of the product to be molded due to deviation in the angle or installation position of the limiting pin 2, which can cause the limiting pin 2 to interfere with the process hole of the product to be molded and the contour limiting hole 11 during assembly, thereby affecting overall work efficiency.

[0044] In some embodiments, at least one limiting groove 4 is provided on the inner wall of the contoured limiting hole 11; the limiting groove 4 is a semi-through groove; the end of the semi-through groove closest to the open end of the contoured limiting hole 11 is open; the extending direction of the limiting groove 4 is parallel to the axial direction of the contoured limiting hole 11; and the length of the limiting groove 4 in the axial direction of the limiting ejector pin 2 is greater than the length of the limiting ejector pin 2. Specifically, the number of limiting grooves 4 and their positions within the contoured limiting hole 11 can be freely adjusted according to actual conditions. A preferred embodiment of the present invention is that the bottom of the limiting groove 4 and the corresponding first limiting surface 21 or second limiting surface 22 are arranged relative to each other. For some products to be injected with a claw 51 structure, a corresponding limiting groove 4 is provided on the inner wall of the imitation limiting hole 11, so that the claw 51 structure can be clamped into the limiting groove 4 during the process of cooperating with the imitation limiting hole 11. Therefore, when the product to be injected is subjected to a torque rotating along the circumferential direction of the imitation limiting hole 11, it can play a certain limiting role, thereby avoiding the displacement of the product to be injected during the processing; at the same time, when assembling such products with claws 51, the limiting groove 4 can also play a certain positioning marking role, that is, the corresponding assembly work can be completed only when the claw 51 and the limiting groove 4 are aligned. Therefore, the staff can immediately identify the correct installation angle to avoid damage to parts due to angle deviation.

[0045] In some embodiments, the end face of the limiting ejector pin 2 near the open end of the imitation limiting hole 11 is an arc surface. This design further optimizes the structure of the limiting ejector pin 2. Setting one end face of the limiting ejector pin 2 as an arc surface can effectively reduce the sharpness of the edge of the limiting ejector pin 2, not only preventing the product to be injected from being scratched during the process of cooperating with the limiting ejector pin 2, but also further improving the guidance of the product to be injected when it is assembled with the limiting ejector pin 2. That is, in the initial assembly stage, if there is a slight angular deviation between the axis of the product to be injected and the axis of the limiting ejector pin 2, the product to be injected can still make its own process hole and the limiting ejector pin 2 preliminarily cooperate under the action of the arc surface, so that when further force is applied to the product to be injected, the product to be injected can be gradually corrected until the axis of the product to be injected and the axis of the limiting ejector pin 2 coincide with each other, thereby efficiently completing the assembly of the two.

[0046] Please refer to Figures 1 to 3 , the first embodiment of the present utility model is:

[0047] A device for preventing dislocation of an accessory includes a contoured limiter 1, the contoured limiter 1 including a contoured limiter hole 11 and a limiter ejector pin 2 disposed in the contoured limiter hole 11; the contoured limiter hole 11 is a blind hole; at least one limiter surface is provided on the outer circumferential surface of the limiter ejector pin 2; the contoured limiter hole 11 has a depth of 16 mm, and the limiter ejector pin 2 has a length of 15.5 mm.

[0048] In this embodiment, a first limiting surface 21 and a second limiting surface 22 are provided on the outer circumferential surface of the limiting ejector 2; the first limiting surface 21 and the second limiting surface 22 are respectively parallel to the axis of the limiting ejector 2; the first limiting surface 21 and the second limiting surface 22 are arranged opposite to each other.

[0049] In this embodiment, the anti-misalignment device of the above-mentioned accessory also includes a limiting base 3; the limiting ejector pin 2 is connected to the bottom of the imitation limiting hole 11 through the limiting base 3; the limiting base 3 is a cylindrical structure; the distance between the first limiting surface 21 and the second limiting surface 22 is less than the diameter of the limiting base 3.

[0050] In this embodiment, the limiting ejector pin 2 and the contoured limiting hole 11 are coaxially arranged.

[0051] In this embodiment, two limiting grooves 4 are provided on the inner wall of the profiled limiting hole 11; the limiting grooves 4 are semi-through grooves; the end of the semi-through groove close to the opening end of the profiled limiting hole 11 is an open end; the bottom of the limiting groove 4 and the corresponding first limiting surface 21 or second limiting surface 22 are arranged opposite to each other; the extension direction of the limiting groove 4 is parallel to the axial direction of the profiled limiting hole 11; in the axial direction of the limiting ejector pin 2, the length of the limiting groove 4 is greater than the length of the limiting ejector pin 2.

[0052] In this embodiment, the end surface of the limiting ejector pin 2 close to the opening end of the contoured limiting hole 11 is an arc surface.

[0053] The working principle of the present utility model is as follows: during assembly, first align the buckle on the buckle nail column body 5 with the limiting groove 4, and then squeeze the buckle nail column body 5 toward the bottom of the imitation limiting hole 11 until the limiting ejector pin 2 is completely embedded in the process hole of the buckle nail column body 5, and the assembly work of the buckle nail column body 5 can be completed.

[0054] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An anti-dislocation device for an accessory, comprising a contoured limiter, characterized in that: The contoured limiting member includes a contoured limiting hole and a limiting ejector pin arranged in the contoured limiting hole; The profiled limiting hole is a blind hole; At least one limiting surface is provided on the outer circumferential surface of the limiting ejector pin.

2. The anti-dislocation device for accessories according to claim 1, characterized in that: Two limiting surfaces are provided on the outer circumference of the limiting ejector pin; The limiting surface is parallel to the axis of the limiting ejector pin; The two limiting surfaces are arranged opposite to each other.

3. The anti-dislocation device for accessories according to claim 2, characterized in that: Also includes a limit base; The limiting ejector pin is connected to the bottom of the contoured limiting hole through the limiting base.

4. The anti-dislocation device for accessories according to claim 3, characterized in that: The limiting base is a cylindrical structure; The distance between the two limiting surfaces is smaller than the diameter of the limiting base.

5. The anti-dislocation device for accessories according to claim 1, characterized in that: The limiting ejector pin and the contoured limiting hole are coaxially arranged.

6. The anti-dislocation device for accessories according to claim 2, characterized in that: At least one limiting groove is provided on the inner wall of the profiled limiting hole; The limiting groove is a half-through groove; One end of the semi-through groove close to the opening end of the contoured limiting hole is an open end.

7. The anti-dislocation device for accessories according to claim 6, characterized in that: The extending direction of the limiting groove is parallel to the axial direction of the contoured limiting hole.

8. The anti-dislocation device for accessories according to claim 6, characterized in that: In the axial direction of the limiting ejector pin, the length of the limiting groove is greater than the length of the limiting ejector pin.

9. The anti-dislocation device for accessories according to claim 1, characterized in that: The end surface of the limiting ejector pin close to the opening end of the imitation limiting hole is an arc surface.

10. The anti-dislocation device for accessories according to claim 1, characterized in that: The depth of the contoured limiting hole is at least 0.5 mm greater than the length of the limiting ejector pin.

Images