A vehicle-mounted host

Abstract

This utility model relates to a vehicle-mounted host, including a mid-frame and a cover plate covering the mid-frame. The mid-frame includes two parallel side plates, and a positioning structure is provided between the cover plate and the side plates. The positioning structure includes a positioning protrusion on the cover plate and a positioning groove on the side plate. The positioning groove includes a positioning part and an isolation part. The minimum groove width of the positioning part is less than or equal to the minimum groove width of the isolation part. When the cover plate is placed on the mid-frame, the positioning protrusion passes through the positioning part and enters the isolation part. The vehicle-mounted host designed by this utility model can reduce the occurrence of abnormal noises from the vehicle-mounted host structure during vehicle operation, thus improving the driving experience.

Description

Technical Field

[0001] This utility model relates to the field of automotive in-vehicle entertainment host technology, and in particular to an in-vehicle host. Background Technology

[0002] With the rapid development of automotive intelligence, smart cockpits have become an indispensable feature of automobiles. In-vehicle entertainment systems, as a crucial component of smart cockpits, have become one of the indicators for measuring user experience and comfort. The in-vehicle head unit is a vital part of the in-vehicle entertainment system. Its structure includes a mid-frame and cover panels, both of which are sheet metal parts. During vehicle assembly, the locking and fixing forces may cause slight deformation, reducing the pre-reserved gap between the mid-frame and cover panel connection structures. During vehicle operation, factors such as bumps can cause friction at these connection points, resulting in abnormal noises and affecting the driving experience. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to design an in-vehicle host that can reduce structural noise during vehicle operation and improve the driving experience.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] Design an in-vehicle host, including a mid-frame and a cover plate covering the mid-frame. The mid-frame includes two parallel side plates. A positioning structure is provided between the cover plate and the side plates. The positioning structure includes a positioning protrusion on the cover plate and a positioning groove on the side plates. The positioning groove includes a positioning part and an isolation part. The minimum groove width of the positioning part is less than or equal to the minimum groove width of the isolation part. When the cover plate is placed on the mid-frame, the positioning protrusion passes through the positioning part and enters the isolation part.

[0006] After the on-board unit is assembled, it is mounted onto the vehicle using a mounting bracket. Due to the tension and support of the mounting bracket, the side panels of the mid-frame undergo slight deformation, which reduces the gap on one side between the positioning groove on the side panel and the positioning protrusion on the cover plate, causing interference between parts and resulting in frictional noise. This solution optimizes the structure of the positioning groove by designing it as a wide-narrow groove. This ensures precise positioning during the assembly of the mid-frame and cover plate and solves the problem of interference caused by the reduced gap on one side of the positioning groove and positioning protrusion after installation. Specifically, the positioning groove includes a positioning section and an isolation section. The positioning section ensures that the positioning protrusion must be precisely aligned before entering during assembly, and physical limiting prevents misalignment between the cover plate and the mid-frame, thus solving the problem of misalignment. After the positioning protrusion passes through the positioning section and enters the isolation section, the redundant space in the isolation section allows for slight displacement of the positioning protrusion, thereby preventing friction between the positioning protrusion and the groove wall and reducing noise.

[0007] Furthermore, the difference between the minimum groove width of the positioning part and the maximum width of the positioning protrusion is not less than 0.2 mm.

[0008] In this design, the difference between the minimum groove width of the positioning part and the maximum width of the positioning protrusion is not less than 0.2mm, that is, the average gap on one side between the positioning protrusion and the groove wall of the positioning part is not less than 0.1mm. This ensures the assembly accuracy of the cover plate and the middle frame, and also avoids the positioning protrusion from getting stuck in the positioning part due to processing errors.

[0009] Furthermore, the difference between the maximum groove width of the isolation section and the maximum width of the positioning protrusion is not less than 0.4 mm.

[0010] In this design, the difference between the maximum width of the isolation section and the maximum width of the positioning protrusion is not less than 0.4mm, that is, the average gap on one side between the positioning protrusion and the groove wall of the isolation section is not less than 0.2mm. The larger gap forms a wide buffer space, allowing the positioning protrusion to generate greater displacement within the isolation section.

[0011] Furthermore, the outer peripheral surface of the positioning protrusion is at least partially arc-shaped, and the groove wall of the isolation part is curved or segmented plane.

[0012] The outer peripheral surface of the positioning protrusion is at least partially curved, so the contact between the positioning protrusion and the groove wall of the positioning part is a line contact, not a planar contact, which reduces the contact friction between the two and facilitates assembly. The groove wall of the isolation part is provided with a curved surface or segmented plane, forming a smoother transition with the groove wall of the positioning part, avoiding the formation of sharp corners that would cause stress concentration during machining.

[0013] Furthermore, the positioning groove also includes a guide portion connected to the positioning part, and the groove wall of the guide portion extends obliquely to connect with the groove wall of the positioning part.

[0014] In this design, the inclined groove wall of the guide section forms a funnel-shaped inlet. During assembly, the protrusion automatically slides into the guide section, eliminating the need for precise visual alignment, thereby reducing assembly difficulty and improving assembly efficiency.

[0015] Furthermore, the cover plate includes two sidewalls arranged in parallel and respectively connected to the two side plates, and the positioning protrusion is provided on the sidewalls.

[0016] The cover plate is connected to the side plate of the middle frame through the side wall, and is locked in place by threaded fasteners to form an integral structure.

[0017] Furthermore, the distance between the outer surfaces of the two sidewalls is less than the distance between the inner surfaces of the two sideplates.

[0018] The distance between the outer surfaces of the two side walls of the cover plate is less than the distance between the inner surfaces of the two side plates of the middle frame. When the cover plate is assembled with the middle frame, the two side walls of the cover plate contact the inner surfaces of the two side plates of the middle frame, rather than the cover plate covering the middle frame. The top of the cover plate is flush with the top of the side plates of the middle frame, forming an integral structure that is more aesthetically pleasing.

[0019] Furthermore, the inner side of the side plate is provided with a baffle, and a gap is formed between the baffle and the side plate. When the cover plate is placed on the middle frame, the side wall is inserted into the gap.

[0020] The gap structure formed by the baffle and the side plate limits the side wall of the cover plate. Together with the positioning protrusion and positioning groove, it achieves three-way limiting in front and back, left and right, and up and down.

[0021] Furthermore, the baffle is provided with a locking protrusion, and the side wall is provided with a locking slot that engages with the locking protrusion.

[0022] During the assembly of the middle frame and cover plate, the snap-fit ​​protrusion produces a distinct clicking sound and vibration feedback when it is inserted into the bayonet. Workers can confirm that the assembly is in place without visual inspection. The snap-fit ​​protrusion and the bayonet form a mechanical interlocking structure, which can achieve initial fixation and facilitates the thread tightening operation in subsequent processes.

[0023] Furthermore, the end of the baffle facing the cover plate is provided with a guide slope.

[0024] The guide slope forms a funnel-shaped inlet structure, which expands the initial allowable offset of the cover plate sidewall. During assembly, the sidewall automatically slides into the gap, eliminating the need for precise alignment and reducing assembly difficulty.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] After the on-board unit is assembled, it is mounted onto the vehicle using a mounting bracket. Due to the tension and support of the mounting bracket, the side panels of the mid-frame undergo slight deformation, which reduces the gap on one side between the positioning groove on the side panel and the positioning protrusion on the cover plate, causing interference between parts and resulting in frictional noise. This solution optimizes the structure of the positioning groove by designing it as a wide-narrow groove. This ensures precise positioning during the assembly of the mid-frame and cover plate and solves the problem of interference caused by the reduced gap on one side of the positioning groove and positioning protrusion after installation. Specifically, the positioning groove includes a positioning section and an isolation section. The positioning section ensures that the positioning protrusion must be precisely aligned before entering during assembly, and physical limiting prevents misalignment between the cover plate and the mid-frame, thus solving the problem of misalignment. After the positioning protrusion passes through the positioning section and enters the isolation section, the redundant space in the isolation section allows for slight displacement of the positioning protrusion, thereby preventing friction between the positioning protrusion and the groove wall and reducing noise. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a vehicle-mounted host according to an embodiment of the present invention.

[0028] Figure 2 This is an exploded view of a vehicle-mounted host according to an embodiment of the present invention.

[0029] Figure 3 for Figure 2 A magnified view of part A in the image.

[0030] Figure 4 This is a schematic diagram of the structure of the positioning protrusion and positioning groove in one embodiment of the present invention. Figure 1 .

[0031] Figure 5 This is a schematic diagram of the structure of the positioning protrusion and positioning groove in one embodiment of the present invention. Figure 2 .

[0032] Figure 6 This is a schematic diagram of the structure of the positioning protrusion and positioning groove in one embodiment of the present invention. Figure 3 .

[0033] Illustration: 1. Middle frame; 11. Side plate; 111. Positioning groove; 1111. Positioning part; 1112. Isolation part; 1113. Guide part; 112. Baffle; 113. Gap; 1121. Locking protrusion; 1122. Guide slope; 2. Cover plate; 21. Side wall; 211. Positioning protrusion; 212. Bayonet. Detailed Implementation

[0034] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein. Example 1:

[0035] like Figures 1 to 4 As shown, this embodiment provides a vehicle-mounted host, including a mid-frame 1 and a cover plate 2 covering the mid-frame 1. The mid-frame 1 includes two parallel side plates 11. The cover plate 2 includes two parallel side walls 21 that are respectively connected to the two side plates 11. A positioning structure is provided between the side walls 21 and the side plates 11. The positioning structure includes a positioning protrusion 211 provided on the side wall 21 and a positioning groove 111 provided on the side plate 11. The positioning groove 111 includes a positioning part 1111 and an isolation part 1112. The minimum groove width of the positioning part 1111 is less than or equal to the minimum groove width of the isolation part 1112. When the cover plate 2 is placed on the mid-frame 1, the positioning protrusion 211 passes through the positioning part 1111 and enters the isolation part 1112. In this embodiment, each side plate 11 and side wall 21 is provided with one positioning groove 111 and one positioning protrusion 211. In other possible embodiments, each side plate 11 and side wall 21 may be provided with multiple positioning grooves 111 and positioning protrusions 211, which is not specifically limited here.

[0036] The difference between the minimum groove width of the positioning part 1111 and the maximum width of the positioning protrusion 211 is not less than 0.2mm, meaning the average clearance on one side between the positioning protrusion 211 and the groove wall of the positioning part 1111 is not less than 0.1mm. This ensures the assembly accuracy of the cover plate 2 and the middle frame 1 while preventing the positioning protrusion 211 from getting stuck in the positioning part 1111 due to machining errors. The difference between the maximum groove width of the isolation part 1112 and the maximum width of the positioning protrusion is not less than 0.4mm, meaning the average clearance on one side between the positioning protrusion 211 and the groove wall at the maximum groove width position of the isolation part 1112 is not less than 0.2mm. This larger clearance creates a wide buffer space, allowing the positioning protrusion 211 to undergo greater displacement within the isolation part 1112.

[0037] The outer peripheral surface of the positioning protrusion 211 is at least partially curved, and the groove wall of the isolation portion 1112 is curved or segmented flat. Because the outer peripheral surface of the positioning protrusion 211 is at least partially curved, the contact between the positioning protrusion 211 and the groove wall of the positioning portion 1111 is a line contact, not a planar contact, reducing the contact friction between them and facilitating assembly. The groove wall of the isolation portion 1112 is provided with a curved surface or segmented flat, forming a smoother transition with the groove wall of the positioning portion 1111, avoiding stress concentration during machining due to sharp corners.

[0038] Specifically, such as Figure 4As shown, in this embodiment, the positioning protrusion 211 is a cylindrical structure with curved sidewalls, and its diameter is 3.85 mm. The positioning part 1111 is a straight groove with a rectangular cross-section, and its width is 4.05 mm. The average gap on one side between the positioning protrusion 211 and the groove wall of the positioning part 1111 is 0.1 mm. The isolation part 1112 is an arc-shaped groove with curved sidewalls. The average gap on one side between the positioning protrusion 211 and the groove wall of the isolation part 1112 at the maximum groove width position is 0.2 mm. In other possible embodiments, the positioning protrusion 211 may be other structures, such as a long cylindrical structure. The maximum width of the positioning protrusion 211, the groove width of the positioning part 1111, the average value of the single-sided gap between the positioning protrusion 211 and the groove wall of the positioning part 1111, and the average value of the single-sided gap between the positioning protrusion 211 and the groove wall at the maximum groove width position of the isolation part 1112 may be other values, and no specific restrictions are imposed here.

[0039] like Figure 2 and 3 As shown, the distance between the outer surfaces of the two side walls 21 of the cover plate 2 is less than the distance between the inner surfaces of the two side plates 11 of the middle frame 1. When the cover plate 2 is assembled with the middle frame 1, the two side walls 21 of the cover plate 2 are in contact with the inner surfaces of the two side plates 11 of the middle frame 1, rather than the cover plate 2 covering the middle frame 1. The top of the cover plate 2 is flush with the top of the side plates 11 of the middle frame 1, forming an integral structure, which is more aesthetically pleasing. The inner surface of the side plate 11 is provided with a baffle 112. The side plate 11 and the baffle 112 are integrally formed, or the baffle 112 is fixed to the side plate 11 by riveting or welding. A gap 113 is formed between the baffle 112 and the side plate 11. When the cover plate 2 is placed on the middle frame 1, the side wall 21 is inserted into the gap 113. The baffle 112 is provided with a latching protrusion 1121, and the side wall 21 is provided with a latching slot 212 that cooperates with the latching protrusion 1121. The gap 113 structure formed by the baffle 112 and the side plate 11 limits the side wall 21 of the cover plate 2. Combined with the positioning protrusion 211 and the positioning groove 111, it achieves three-way limiting in the front-back, left-right, and up-down directions. During the assembly of the middle frame 1 and the cover plate 2, the locking protrusion 1121 produces a distinct clicking sound and vibration feedback when it engages with the bayonet 212. Workers can confirm the assembly is in place without visual inspection. The locking protrusion 1121 and the bayonet 212 form a mechanical interlocking structure, enabling initial fixation and facilitating subsequent threaded fastening. The end of the baffle 112 facing the cover plate 2 has a guide slope 1122, which forms a funnel-shaped inlet structure, expanding the initial allowable offset of the side wall of the cover plate 2. During assembly, the side wall 21 automatically slides into the gap 113, eliminating the need for precise alignment and reducing assembly difficulty. After the cover plate 2 is connected to the side plate 11 of the middle frame 1 via the side wall 21, the two are locked together by threaded fasteners to form an integrated structure. Example 2:

[0040] like Figure 5As shown, the positioning groove 111 also includes a guide portion 1113 connected to the positioning part 1111. The groove wall of the guide portion 1113 extends obliquely to connect with the groove wall of the positioning part 1111. The oblique groove wall of the guide portion 1113 forms a funnel-shaped inlet. During assembly, the positioning protrusion 211 automatically slides into the guide portion 1113, eliminating the need for precise visual alignment, thereby reducing assembly difficulty and improving assembly efficiency.

[0041] Specifically, in this embodiment, the positioning groove 111 has a three-section structure, including a guide portion 1113, a positioning portion 1111, and an isolation portion 1112. The guide portion 1113 has a maximum groove width of 8 mm and a minimum groove width of 4.05 mm. The positioning protrusion 211 has a cylindrical structure with a diameter of 3.85 mm. The positioning portion 1111 has a rectangular cross-section straight groove with a groove width of 4.05 mm. The average clearance on one side between the positioning protrusion 211 and the groove wall of the positioning portion 1111 is 0.1 mm. The isolation portion 1112 has an arc-shaped groove with an arc-shaped groove wall. The average clearance on one side between the positioning protrusion 211 and the groove wall of the isolation portion 1112 at the maximum groove width position is 0.2 mm.

[0042] The other structures of the vehicle-mounted host in this embodiment are the same as those in Embodiment 1, and will not be described again here. Example 3:

[0043] like Figure 6 As shown, in this embodiment, the positioning part 1111 of the positioning groove 111 is a trapezoidal cross-section inclined groove. The maximum groove width of the positioning part 1111 is 8mm, and the minimum groove width is 4.05mm. That is, the average gap on one side between the positioning protrusion 211 and the groove wall of the positioning part 1111 at the minimum groove width is 0.1mm. The isolation part 1112 is an arc-shaped groove, and the groove wall of the isolation part 1112 is an arc surface. The average gap on one side between the positioning protrusion 211 and the groove wall of the isolation part 1112 at the maximum groove width position is 0.2mm.

[0044] The other structures of the vehicle-mounted host in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0045] After the on-board unit is assembled, it is mounted onto the vehicle using a mounting bracket. Due to the tension and support of the mounting bracket, the side panels of the middle frame 1 undergo slight deformation. This leads to a reduction in the gap on one side between the positioning groove 111 on the side panel 11 and the positioning protrusion 211 on the cover plate 2, causing interference between the parts and resulting in frictional noise. In this solution, the structure of the positioning groove 111 is optimized by designing it as a wide-narrow groove. This ensures accurate positioning during the assembly of the middle frame 1 and the cover plate 2, and also solves the problem of interference caused by the reduced gap on one side of the positioning groove 111 and the positioning protrusion 211 after vehicle assembly. Specifically, the positioning groove 111 is equipped with a positioning part 1111 and an isolation part 1112. The positioning part 1111 ensures that the positioning protrusion 211 must be strictly aligned before entering during assembly, and the physical limit prevents the cover plate 2 from shifting off from the middle frame 1, thus solving the misalignment problem between the middle frame 1 and the cover plate 2. After the positioning protrusion 211 passes through the positioning part 1111 and enters the isolation part 1112, the space of the isolation part 1112 is redundant, allowing the positioning protrusion 211 to move slightly, thereby avoiding friction between the positioning protrusion 211 and the groove wall and reducing abnormal noise.

[0046] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation 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.

[0047] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, the inclusion of "first," "second," etc., in a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted host, characterized in that, The device includes a middle frame and a cover plate covering the middle frame. The middle frame includes two parallel side plates. A positioning structure is provided between the cover plate and the side plates. The positioning structure includes a positioning protrusion on the cover plate and a positioning groove on the side plates. The positioning groove includes a positioning part and an isolation part. The minimum groove width of the positioning part is less than or equal to the minimum groove width of the isolation part. When the cover plate is placed on the middle frame, the positioning protrusion passes through the positioning part and enters the isolation part.

2. The vehicle-mounted host according to claim 1, characterized in that, The difference between the minimum groove width of the positioning part and the maximum width of the positioning protrusion is not less than 0.2 mm.

3. The vehicle-mounted host according to claim 1, characterized in that, The difference between the maximum width of the isolation section and the maximum width of the positioning protrusion is not less than 0.4 mm.

4. The vehicle-mounted host according to claim 3, characterized in that, The outer peripheral surface of the positioning protrusion is at least partially arc-shaped, and the groove wall of the isolation part is curved or segmented plane.

5. The vehicle-mounted host according to claim 1, characterized in that, The positioning groove also includes a guide portion connected to the positioning part, and the groove wall of the guide portion extends obliquely to connect with the groove wall of the positioning part.

6. The vehicle-mounted host according to any one of claims 1-5, characterized in that, The cover plate includes two sidewalls arranged in parallel and respectively connected to the two side plates, and the positioning protrusion is provided on the sidewalls.

7. The vehicle-mounted host according to claim 6, characterized in that, The distance between the outer surfaces of the two sidewalls is less than the distance between the inner surfaces of the two sideplates.

8. The vehicle-mounted host according to claim 7, characterized in that, The inner side of the side plate is provided with a baffle, and a gap is formed between the baffle and the side plate. When the cover plate is placed on the middle frame, the side wall is inserted into the gap.

9. The vehicle-mounted host according to claim 8, characterized in that, The baffle is provided with a locking protrusion, and the side wall is provided with a locking slot that mates with the locking protrusion.

10. The vehicle-mounted host according to claim 8, characterized in that, The end of the baffle facing the cover plate has a guide slope.

Images