Safety belt guide ring limiting structure

Abstract

The utility model relates to the field of automobile manufacturing, concretely relates to a safety belt guide ring limiting structure. The limiting structure is circular ring structure, and the middle part of the outer side of circular ring structure is recess, and both sides are circular table structure, and the big one and the small one of both sides circular table are provided with a plurality of cylindrical elastic protrusions on the circular table, are provided with two circles of cylindrical protrusions on the big circular table, and are provided with a circle of cylindrical protrusions on the small circular table, the limiting structure is provided with an opening. The utility model utilizes the elasticity of limiting structure to play the buffering effect, avoids the friction abnormal sound, and simultaneously through the working height of limiting structure, whether the gap of guide ring and surrounding decorative plate etc. conforms to the design requirement, and further effectively avoids the impact abnormal sound.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing, specifically to a seat belt guide ring limiting structure. Background Technology

[0002] Seat belts are important automotive components, and any abnormal noises from them will greatly affect the passenger experience. Currently, the guide rings on the market generally lack a limiting structure, or a soft washer is added as a limiting structure to buffer the impact or friction during the movement of the guide ring. However, the parameters of the washer need to be controlled during the design stage to control the probability of abnormal noises. The current structure of the guide ring can avoid abnormal noises by adding a soft washer between the stepped bolt and the guide ring, but there is no way to avoid abnormal noises by adjusting the structural dimensions through calculation and experimentation. Utility Model Content

[0003] To address the problem of abnormal noise caused by impact or friction during the movement of the seat belt guide ring, this utility model provides a seat belt guide ring limiting structure, the specific technical solution of which is as follows:

[0004] A seat belt guide ring limiting structure is provided. The limiting structure is a circular ring structure with a groove in the middle of the outer side and frustum structures on both sides. The frustums on both sides are of different sizes. Several cylindrical elastic protrusions are provided on the frustums. Two rings of cylindrical protrusions are provided on the larger frustum and one ring of cylindrical protrusions is provided on the smaller frustum. The limiting structure is provided with an opening.

[0005] Furthermore, the inner diameter of the ring structure matches the outer diameter of the stepped bolt, and the outer side of the ring structure matches the inner diameter of the guide ring, so that the limiting structure is sleeved between the stepped bolt and the guide ring, and a bolt washer D is provided for cooperation.

[0006] This invention utilizes the elasticity of the limiting structure to provide a buffering effect and prevent friction noise. Simultaneously, the working height of the limiting structure indicates whether the gap between the guide ring and surrounding trim panels meets design requirements, thus preventing impact noise. If the elasticity is too high, it will cause excessive swaying of the guide ring, leading to relative movement between components and friction noise; if the elasticity is too low, it will affect the normal rotation of the guide ring. Therefore, properly controlling the elasticity of the limiting structure is crucial to avoiding noise problems. This invention establishes the elasticity of the limiting structure using the following steps:

[0007] (1) Establish a limit structure model in CATIA. After the limit structure model is established, establish the mechanical parameters. Then, accurately obtain the elastic force F corresponding to the working height h of the limit structure based on the mechanical parameters. Finally, import the working height h and elastic force F of the limit structure into the Excel calculation program and define the influence of the working height on the elastic force of the limit structure. Design the elastic force F of the limit structure by adjusting the initial height H and the working height h. (2) First, according to the actual vehicle environment, conduct corresponding tests to ensure normal use function. Test whether there is no abnormal noise within the elastic force value range of the limit structure. At the same time, combined with the engineering situation, the working height range can be obtained by the intersection of the relationship curve between the elastic force value F and the working height h and the allowable elastic force value range. Attached Figure Description

[0008] Figure 1 Schematic diagram of the structure of this utility model Figure 1 ;

[0009] Figure 2 Schematic diagram of the structure of this utility model Figure 2 ;

[0010] Figure 3 Side view of this utility model;

[0011] Figure 4 This utility model installation diagram.

[0012] Figure label:

[0013] 1-Small truncated cone, 2-Large truncated cone, 3-Groove, 4-Opening, 11-Cylindrical protrusion, 21-Cylindrical protrusion, A-Limiting structure, B-Step bolt, C-Guide ring, D-Bolt washer. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1-3 As shown: A seat belt guide ring limiting structure A, the limiting structure A is a ring structure, the outer center of the ring structure is a groove 3, and the two sides are frustum structures 1 and 2, the two frustums are one large and one small, and several cylindrical elastic protrusions are provided on the frustums. Two rings of cylindrical protrusions 21 are provided on the large frustum 2, and one ring of cylindrical protrusions 11 are provided on the small frustum 1; the limiting structure is provided with an opening 4.

[0016] like Figure 4 As shown in the schematic diagram of the installation of the limiting structure of this utility model, the inner diameter of the limiting structure A matches the outer diameter of the stepped bolt B, and the outer part of the ring structure matches the inner diameter of the guide ring C, so that the limiting structure is sleeved between the stepped bolt and the guide ring, and a bolt washer D is provided for cooperation.

[0017] The preferred embodiments of this patent have been described in detail above. However, this patent 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 this patent.

Claims

1. A seat belt guide ring limiting structure, characterized in that: The limiting structure is a ring structure with a groove in the middle of the outer side and frustum structures on both sides. The frustums on both sides are of different sizes and have several cylindrical elastic protrusions. The larger frustum has two rings of cylindrical protrusions and the smaller frustum has one ring of cylindrical protrusions. The limiting structure has an opening.

2. The seat belt guide ring limiting structure according to claim 1, characterized in that: The inner diameter of the limiting structure matches the outer diameter of the stepped bolt, and the outer part of the ring structure matches the inner diameter of the guide ring, so that the limiting structure is fitted between the stepped bolt and the guide ring, and bolt washers are provided for cooperation.

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