Crumple mounting structure of armrest box

Abstract

The utility model relates to the technical field of automobile accessories, and discloses an armrest box crumple mounting structure which is suitable for an armrest box body, the armrest box body is connected with a mounting support through bolts, the armrest box body is provided with a first boss, the first boss is connected with a second boss, the first boss and the second boss are coaxially arranged, and the second boss is provided with a reinforcing rib. An annular groove is upwards formed in the bottom of the first boss, the section of the annular groove is V-shaped, and the outer diameter of the second boss is smaller than that of the first boss. According to the crumple mounting structure for the armrest box, when the head of a passenger collides with the armrest, the armrest is stressed in the vertical direction, so that the armrest box body is subjected to downward pressure, at the moment, the reinforcing ribs abut against the mounting support, the first boss deforms under the action of pressure through the annular groove in the first boss, and the crumple energy absorption effect is achieved; therefore, the deceleration of the passenger is slowed down in the head collision process, the impact force borne by the head is buffered, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an armrest box collapse installation structure. Background Art

[0002] The car armrest is a car accessory installed between two seats, belonging to the car interior system. Its humanized design is originally intended to allow car drivers to place their arms when driving for a long time, so that their arms can get an effective rest without numbness and stiffness.

[0003] The existing armrest box body on the auxiliary instrument panel of the car is generally fixed to the mounting bracket by bolts, and the two are connected as one body, and the overall strength is relatively high. The armrest is arranged on the armrest box body. When the car is driving, a rear-end collision occurs or the driver brakes suddenly, the passenger in the middle position of the rear row moves forward due to inertia, and the passenger's head is easy to hit the armrest on the auxiliary instrument panel. The armrest is subjected to vertical force in the head collision area and tends to move downward. The overall strength of the armrest box body and the mounting bracket is relatively high, resulting in poor buffering capacity, which makes the passenger's head easy to be hit. Utility Model Content

[0004] The utility model aims to provide an armrest box collapse installation structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a collapse mounting structure of an armrest box, applicable to an armrest box body, the armrest box body is connected to a mounting bracket by bolts, the armrest box body is provided with a first boss, the first boss is connected to a second boss, the first boss and the second boss are coaxially arranged, the second boss is provided with a reinforcing rib, an annular groove is provided upwardly at the bottom of the first boss, and the cross-sectional shape of the annular groove is V-shaped.

[0006] Preferably, the outer diameter of the second boss is smaller than the outer diameter of the first boss.

[0007] Preferably, the second boss is provided with a mounting hole.

[0008] Preferably, the reinforcing ribs include first reinforcing ribs and second reinforcing ribs, and a plurality of the second reinforcing ribs are fixed to the first reinforcing ribs.

[0009] Preferably, the first reinforcing rib is annular and fixed to the bottom of the second boss.

[0010] Preferably, the second reinforcing ribs are in strip shape and are evenly distributed around the first reinforcing ribs.

[0011] Preferably, the second reinforcing rib is fixedly mounted on the bottom of the second boss.

[0012] Preferably, a curved surface is provided at one end of the second reinforcing rib away from the first reinforcing rib.

[0013] The armrest box collapse installation structure has the following beneficial effects:

[0014] The armrest box collapse mounting structure has a structure in which, when a passenger's head collides with the armrest, the armrest is subjected to force in the vertical direction, so that the armrest box body is subjected to downward pressure. At this time, the reinforcing ribs are pressed against the mounting bracket, and the annular groove on the first boss causes the first boss to deform under the action of pressure, thereby achieving the effect of collapse energy absorption, thereby reducing the deceleration of the passenger's head during the collision process, buffering the impact force on the head, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the assembly of the armrest box and the mounting bracket provided in an embodiment of the present application;

[0016] Figure 2 for Figure 1 Exploded diagram of

[0017] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2 Sectional view of the center armrest box;

[0019] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0020] In the figure: 1, armrest box body; 11, first boss; 12, second boss; 13, annular groove; 14, mounting hole; 2, mounting bracket; 3, first reinforcing rib; 4, second reinforcing rib. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-Figure 2As shown, the utility model provides an embodiment of an armrest box collapse mounting structure, which is applicable to an armrest box body 1, the armrest box body 1 is arranged in the auxiliary instrument panel, an armrest is arranged on the armrest box body 1, the armrest box body 1 is connected with a mounting bracket 2 by bolts, the armrest box body 1 is provided with a first boss 11, the first boss 11 is connected to the second boss 12, the first boss 11 and the second boss 12 are coaxially arranged, and the outer diameter of the second boss 12 is smaller than the outer diameter of the first boss 11, the second boss 12 is provided with a mounting hole 14, and the bolt passes through the mounting hole 14 to fix the armrest box body 1 to the top of the mounting bracket 2.

[0023] Specifically, Figure 3-Figure 5 As shown, an annular groove 13 is formed upwardly at the bottom of the first boss 11, and the cross-section of the annular groove 13 is V-shaped.

[0024] like Figure 3 As shown, the second boss 12 is provided with reinforcing ribs, which increase the strength of the second boss 12 and prevent the second boss 12 from being damaged after impact. The reinforcing ribs include first reinforcing ribs 3 and second reinforcing ribs 4. Several second reinforcing ribs 4 are fixed to the first reinforcing ribs 3. The first reinforcing ribs 3 and the second reinforcing ribs 4 are both fixed to the bottom of the second boss 12.

[0025] Among them, the first reinforcing rib 3 is annular and is arranged outside the mounting hole 14 to prevent the first reinforcing rib 3 from hindering the assembly between the armrest box body 1 and the mounting bracket 2. The second reinforcing rib 4 is strip-shaped and is evenly distributed around the first reinforcing rib 3. The intersection point of the extension lines of several second reinforcing ribs 4 is the center point of the first reinforcing rib 3, so that the entire reinforcing rib is radial, thereby uniformly strengthening the strength of the second boss 12. An arc surface is set at one end of the second reinforcing rib 4 away from the first reinforcing rib 3 to prevent workers from being stabbed by the edges of the second reinforcing rib 4 when assembling the armrest box body 1 and the mounting bracket 2.

[0026] In this embodiment, when a car rear-ends or the driver brakes suddenly, the passenger in the middle position of the back row moves forward due to inertia, causing the passenger's head to hit the armrest connected to the armrest box body 1. The armrest is subjected to force in the vertical direction, causing the armrest box body 1 to be subjected to downward pressure. At this time, the reinforcing rib is pressed against the mounting bracket 2, and the annular groove 13 on the first boss 11 causes the first boss 11 to deform under the action of pressure, thereby achieving the effect of crushing and energy absorption, thereby reducing the deceleration of the passenger's head during the collision, buffering the impact force on the head, and improving safety.

[0027] It is understandable that the cross-sectional shape of the annular groove 13 is V-shaped, which, on the one hand, allows the first boss 11 to deform under impact, and on the other hand, provides a compensation space for the deformation of the first boss 11 to prevent it from being unable to recover after deformation.

[0028] In addition, GB11552 (national standard) and ECE R21 (European standard) specify the relevant regulations on head collision. The specific method is to use a simulated rigid ball head to hit the armrest at a speed of 24.1km / h. The ball head is required to have no sharp corners or edges, and the deceleration of the ball head must exceed 80g for no more than 3ms. This detection method can be used to detect the armrest box to which the collapse mounting structure in this application is applied, in order to ensure that the armrest can quickly absorb and disperse the impact force during a collision, reducing potential damage to the occupant's head.

[0029] Working principle: When a car rear-ends or the driver brakes suddenly, the passenger in the middle position of the back row moves forward due to inertia, causing the passenger's head to hit the armrest connected to the armrest box body 1. The armrest is subjected to force in the vertical direction, causing the armrest box body 1 to be subjected to downward pressure. At this time, the reinforcing rib is pressed against the mounting bracket 2, and the annular groove 13 on the first boss 11 causes the first boss 11 to deform under the action of pressure, thereby achieving the effect of collapse and energy absorption, thereby reducing the deceleration of the passenger's head during the collision process and cushioning the impact force on the head.

[0030] In summary, although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An armrest box collapse mounting structure, applicable to an armrest box body (1), wherein the armrest box body (1) is connected to a mounting bracket (2) by bolts, and characterized in that: The armrest box body (1) is provided with a first boss (11), the first boss (11) is connected to the second boss (12), the first boss (11) and the second boss (12) are coaxially arranged, and the second boss (12) is provided with a reinforcing rib; An annular groove (13) is formed upwardly at the bottom of the first boss (11), and the cross-section of the annular groove (13) is V-shaped.

2. The armrest box collapse installation structure according to claim 1, characterized in that: The outer diameter of the second boss (12) is smaller than the outer diameter of the first boss (11).

3. The armrest box collapse installation structure according to claim 1, characterized in that: The second boss (12) is provided with a mounting hole (14).

4. The armrest box collapse installation structure according to claim 1, characterized in that: The reinforcing ribs include first reinforcing ribs (3) and second reinforcing ribs (4), and a plurality of the second reinforcing ribs (4) are fixed to the first reinforcing ribs (3).

5. The armrest box collapse installation structure according to claim 4, characterized in that: The first reinforcing rib (3) is annular and fixed to the bottom of the second boss (12).

6. The armrest box collapse installation structure according to claim 5, characterized in that: The second reinforcing ribs (4) are in strip shape and are evenly distributed around the first reinforcing ribs (3).

7. The armrest box collapse installation structure according to claim 6, characterized in that: The second reinforcing rib (4) is fixedly mounted on the bottom of the second boss (12).

8. The armrest box collapse installation structure according to claim 7, characterized in that: An end of the second reinforcing rib (4) away from the first reinforcing rib (3) is provided with a curved surface.

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