Upper interior trimming panel body of automobile stand column

Abstract

The utility model relates to the field of automobile interiors, in particular to an automobile stand column upper trim panel body which is provided with a bolt installation sinking table, a weakening groove and a tearing guide groove, and the tearing guide groove is communicated with the weakening groove. At least one section of the tearing guide groove is located between the bolt installation sinking table and the weakening groove, gradually gets close to the root of the bolt installation sinking table from the weakening groove and passes through the outer side of the root of the bolt installation sinking table. According to the scheme, the problem that the root of the bolt installation sinking table is torn is solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive interiors, specifically to the interior panel body on automotive pillars. Background Technology

[0002] The interior trim panel is installed on the inside of the car pillar. The interior trim panel serves a decorative and aesthetic purpose. An air curtain is installed on the inside of the interior trim panel. In the event of an emergency such as a car collision, the air curtain will inflate rapidly and burst, causing the interior trim panel to tear and break at the weakening groove, creating a gap. The air curtain will then pop out from the gap at the weakening groove of the interior trim panel, thereby providing cushioning protection for the passengers.

[0003] The existing installation method for the pillar interior panel body and the pillar is as follows: The inner side of the pillar interior panel body has a bolt mounting recess. The bolts pass through the bolt mounting recess and connect to the pillar, thus fixing the pillar interior panel body and the pillar. Simultaneously, a cover is snapped onto the front part of the pillar interior panel body corresponding to the bolt mounting recess. The cover conceals the bolt mounting recess and the bolts on it, preventing the bolt mounting recess and bolts from being exposed, resulting in a more aesthetically pleasing installation of the interior panel body on the pillar.

[0004] However, in existing technologies, during the burst test of the air curtain interior panel, when the air curtain bursts, the interior panel of the pillar does not completely break along the weakening groove. The damage path extends to the root of the bolt-mounted recess, causing the root of the bolt-mounted recess to tear. This separates the root of the bolt-mounted recess from the interior panel. In this case, the bolt-mounted recess is still fixed to the pillar by bolts, but it no longer restrains the interior panel. After the interior panel separates from the bolt-mounted recess, it will fly towards the human body, causing injury upon impact and posing a certain safety hazard. Utility Model Content

[0005] This utility model aims to provide an interior panel body for automobile pillars to solve the problem of tearing at the root of the bolt mounting base.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: the interior panel body on the automobile pillar is provided with a bolt mounting countersunk and a weakening groove, and is also provided with a tear guide groove, the tear guide groove and the weakening groove being connected.

[0007] At least one section of the tear guide groove is located between the bolt mounting countersunk and the weakening groove, gradually moving from the weakening groove toward the root of the bolt mounting countersunk and passing outside the root of the bolt mounting countersunk.

[0008] The principle and advantages of this solution are as follows: During the air curtain explosion, the interior panel body on the car pillar is torn at the weakening groove. At the same time, the tear in the weakening groove is transmitted to the tear guide groove, which guides the tearing direction, so that the explosive tearing proceeds in the preset direction of the tear guide groove. When the tear in the weakening groove is transmitted outward, the explosive tearing is no longer transmitted to the root of the bolt mounting platform. This avoids the tear on the weakening groove from being transmitted to the root of the bolt mounting platform, thus preventing the root of the bolt mounting platform from tearing. This solves the problem of tearing at the root of the bolt mounting platform and avoids the situation where the root of the bolt mounting platform is torn and separated from the interior panel body on the car pillar, greatly improving the safety of the air curtain explosion.

[0009] Preferably, as an improvement, the closest distance between the tear guide groove and the root of the bolt mounting platform is 1-3 mm. This close proximity allows the tear guide groove to guide the tearing direction more quickly and effectively when the explosive tearing force is transmitted to the root of the bolt mounting platform, preventing tearing damage to the root of the bolt mounting platform.

[0010] Preferably, as an improvement, the distance between the weakening groove and the root of the bolt mounting countersunk is at least 15 mm. This increases the distance between the weakening groove and the root of the bolt mounting countersunk compared to the prior art, where the distance is typically between 5-7 mm. The increased distance between the weakening groove and the root of the bolt mounting countersunk in this application is mainly due to two considerations: firstly, by increasing the distance, sufficient space is provided for setting the tear guide groove; secondly, increasing the distance ensures that the tear in the weakening groove is farther from the root of the bolt mounting countersunk, making it less likely for the explosive tearing force in the weakening groove to be transmitted towards the root of the bolt mounting countersunk, thus helping to avoid tearing damage at the root of the bolt mounting countersunk.

[0011] Preferably, as an improvement, the width of the weakening groove is 3-5 mm.

[0012] Preferably, as an improvement, the width of the tear guide groove is 3-5 mm.

[0013] Preferably, as an improvement, the wall thickness of the weakening groove on the side near the root of the bolt mounting platform is 2.5-3mm, and the wall thickness on the other side of the weakening groove is 1.6-1.8mm.

[0014] In the prior art, the wall thickness of the weakening groove is uniform, ranging from 1.6 to 1.8 mm. However, in this solution, the wall thickness of the weakening groove near the root of the bolt mounting platform is increased, thereby strengthening the strength of that side. This can prevent the tear from extending and propagating towards the root of the bolt mounting platform when the weakening groove tears, thus also preventing tearing damage to the root of the bolt mounting platform.

[0015] Preferably, as an improvement, the wall thickness of the tear guide groove on the side near the root of the bolt mounting platform is 2.5-3mm, and the wall thickness on the other side of the tear guide groove is 1.6-1.8mm.

[0016] Therefore, by increasing the wall thickness of the tear guide groove on the side near the root of the bolt mounting platform, the strength of that side is enhanced, which can prevent the tear from extending and propagating towards the root of the bolt mounting platform when the tear guide groove tears.

[0017] Preferably, as an improvement, the wall thickness of 2.5-3 mm accounts for one-tenth to one-eighth of the width of the weakening groove.

[0018] Preferably, as an improvement, the wall thickness of 2.5-3 mm accounts for one-tenth to one-eighth of the width of the tear guide groove.

[0019] Preferably, as an improvement, metal wires are injection-molded and embedded inside the interior trim panel of the car pillar, extending into the root of the bolt mounting platform. Therefore, during the air curtain explosion, the metal wires significantly increase the strength of the bolt mounting platform root, making it less prone to tearing or separation from the interior trim panel of the car pillar, thus preventing safety accidents caused by the interior trim panel flying towards the human body. Attached Figure Description

[0020] Figure 1 This is a 3D view of the interior panel on the car pillar, mainly showing the front (outer side) structure.

[0021] Figure 2 This is a 3D view of the interior panel on the car pillar, mainly showing the structure of the back (inner side).

[0022] Figure 3 for Figure 2 Enlarged view of the base and surrounding structure of the mounting platform with bolts installed. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation method:

[0024] The reference numerals in the accompanying drawings include: 1. Interior panel body on the car pillar; 2. Cover; 3. Weakening groove; 4. Tear guide groove; 5. Root; 6. Bolt mounting countersunk.

[0025] Example 1

[0026] The basics are as follows: Figures 1-3 As shown: This embodiment discloses an interior trim panel body 1 for a car pillar, which is injection molded. The inner side (back) of the interior trim panel body 1 is integrally provided with a bolt mounting recess 6. The root 5 of the bolt mounting recess 6 protrudes from the interior trim panel body 1, with a protrusion thickness of 1-2 mm. The projection of the bolt mounting recess 6 onto the root 5 is within the range of the root 5. The outer side (front) of the interior trim panel body 1 is provided with a cover 2, and the outer side of the interior trim panel body 1 has a cover groove corresponding to the bolt mounting recess 6. The cover 2 fits into the cover groove.

[0027] Combination Figure 2 and Figure 3 As shown, in this embodiment, the back of the interior trim panel body 1 on the car pillar is provided with a weakening groove 3 and a tear guide groove 4, which are connected to the weakening groove 3. The weakening groove 3 is located on the outside of the root 5 of the bolt mounting countersunk 6.

[0028] Figure 3 The right end of the tear guide groove 4 connects to the weakening groove 3, and the connection point between the right end of the tear guide groove 4 and the weakening groove 3 is basically flush with the right end of the root 5. The right half of the tear guide groove 4 is located between the bolt mounting countersunk 6 and the weakening groove 3, and gradually approaches the root 5 of the bolt mounting countersunk 6 from the weakening groove 3, passing outside the root 5 of the bolt mounting countersunk 6. The left end of the tear guide groove 4 extends to the left front of the root 5.

[0029] The closest distance between the tear guide groove 4 and the root 5 of the bolt mounting countersunk platform 6 is 1-3mm, which is... Figure 3 The distance shown in B0 is 1-3mm, specifically 2mm in this embodiment. The distance between the weakening groove 3 and the root 5 of the bolt mounting countersunk platform 6 is at least 15mm, that is... Figure 3 The distance shown in A0 is at least 15mm, and in this embodiment it is specifically 17mm.

[0030] In this embodiment, the width of the weakening groove 3 is 3-5mm, specifically 3.5mm. The width of the tear guide groove 4 is 3-5mm, specifically 3.5mm.

[0031] In the existing technology, there is no tear guide groove 4, only a weakening groove 3. When the air curtain explodes, the interior panel body 1 on the car pillar is torn and damaged at the weakening groove 3. However, at the same time, the tearing force will be transmitted upward to the root 5, causing the root 5 to tear and be damaged. This can easily lead to a safety accident.

[0032] In this embodiment, by setting a tear guide groove 4, when the air curtain explodes, the interior panel body 1 on the car pillar is torn at the weakening groove 3. At the same time, the tear in the weakening groove 3 is transmitted from the right end of the tear guide groove 4 to the tear guide groove 4. The tear guide groove 4 guides the tearing direction, so that the explosive tearing proceeds upward along the direction of the tear guide groove 4. In this way, the explosive tearing is no longer transmitted to the root 5 of the bolt mounting platform 6, thereby avoiding the tear on the weakening groove 3 from being transmitted to the root 5 of the bolt mounting platform 6 and causing the root 5 of the bolt mounting platform 6 to tear. This solves the problem of the root 5 of the bolt mounting platform 6 tearing and avoids the situation where the root 5 of the bolt mounting platform 6 is torn and separated from the interior panel body 1 on the car pillar, greatly improving the safety of the air curtain explosion.

[0033] Furthermore, to further prevent tearing from propagating to the root 5 of the bolt mounting countersunk 6, the above-mentioned design can be further optimized. Specifically, the wall thickness of the weakening groove 3 on the side near the root 5 of the bolt mounting countersunk 6 is 2.5-3 mm, and the wall thickness on the other side of the weakening groove 3 is 1.6-1.8 mm. The 2.5-3 mm wall thickness accounts for one-tenth to one-eighth of the width of the weakening groove 3. In this way, the wall thickness of the weakening groove 3 on the side near the root 5 of the bolt mounting countersunk 6 is relatively thick, making it difficult for tears in the weakening groove 3 to propagate from the side of the weakening groove 3 near the root 5 of the bolt mounting countersunk 6 to the root 5 of the bolt mounting countersunk 6, thereby preventing tearing damage to the root 5 of the bolt mounting countersunk 6.

[0034] Similarly, the wall thickness of the tear guide groove 4 on the side near the root 5 of the bolt mounting countersunk 6 can also be set to 2.5-3mm, and the wall thickness on the other side of the tear guide groove 4 can be 1.6-1.8mm. The wall thickness of 2.5-3mm accounts for one-tenth to one-eighth of the width of the tear guide groove 4. In this way, when the tear guide groove 4 is damaged by tearing, the tear damage to the tear guide groove 4 is not easily transmitted to the root 5 of the bolt mounting countersunk 6 through the side wall of the tear guide groove 4 near the root 5 of the bolt mounting countersunk 6.

[0035] Example 2

[0036] This embodiment is a further improvement on embodiment 1. In this embodiment, metal wires, such as steel wires or iron wires, are injection molded and embedded inside the interior panel body 1 of the car pillar. The metal wires extend into the root 5, that is, the metal wires are also injection molded and embedded in the root 5. In this way, when the air curtain explodes, the setting of the metal wires greatly improves the firmness and strength of the root 5. The root 5 is not easy to tear or separate from the interior panel body 1 of the car pillar, thereby avoiding safety accidents caused by the interior panel body 1 of the car pillar flying towards the human body.

[0037] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. The interior trim panel body on the automobile pillar is provided with a bolt mounting countersunk platform and a weakening groove, characterized in that: It also includes a tear guide groove, which is connected to the weakening groove; At least one section of the tear guide groove is located between the bolt mounting countersunk and the weakening groove, gradually moving from the weakening groove toward the root of the bolt mounting countersunk and passing outside the root of the bolt mounting countersunk.

2. The interior panel body on the automobile pillar according to claim 1, characterized in that: The closest distance between the tear guide groove and the root of the bolt mounting platform is 1-3mm.

3. The interior panel body on the automobile pillar according to claim 1, characterized in that: The distance between the weakening groove and the root of the bolt mounting platform is at least 15mm.

4. The interior trim panel body on the automobile pillar according to claim 1, characterized in that: The width of the weakening groove is 3-5 mm.

5. The interior panel body on the automobile pillar according to claim 1, characterized in that: The width of the tear guide groove is 3-5mm.

6. The interior panel body on the automobile pillar according to claim 4, characterized in that: The wall thickness of the weakening groove on the side near the root of the bolt mounting platform is 2.5-3mm, and the wall thickness on the other side of the weakening groove is 1.6-1.8mm.

7. The interior trim panel body on the automobile pillar according to claim 5, characterized in that: The wall thickness of the tear guide groove on the side near the root of the bolt mounting platform is 2.5-3mm, and the wall thickness on the other side of the tear guide groove is 1.6-1.8mm.

8. The interior panel body on the automobile pillar according to claim 6, characterized in that: The wall thickness of 2.5-3mm accounts for one-tenth to one-eighth of the width of the weakening groove.

9. The interior trim panel body on the automobile pillar according to claim 7, characterized in that: The wall thickness of 2.5-3mm accounts for one-tenth to one-eighth of the width of the tear guide groove.

10. The interior trim panel body on the automobile pillar according to claim 1, characterized in that: Metal wires are embedded in the interior panel of the car pillar through injection molding, and the metal wires extend into the root of the bolt mounting platform.

Images