Automobile door lock locking mechanism with noise reduction structure

Abstract

The utility model provides an automobile door lock locking mechanism with a silencing structure. The automobile door lock locking mechanism comprises a bottom plate; the pawl is arranged on the front surface of the bottom plate; the plastic coating part is arranged on the outer side face of the pawl, and the plastic coating part is arranged in the bottom plate; a ratchet shaft is fixedly installed on the front face of the bottom plate, and a ratchet is rotationally connected to the outer side face of the ratchet shaft. According to the automobile door lock locking mechanism with the noise reduction structure, the plastic-coated part is arranged between the pawl and the bottom plate, when a user closes an automobile door, a fish mouth of a door lock ratchet wheel part collides with the lock catch column, the ratchet wheel rotates around the ratchet wheel shaft to move to a full-locking position, at the moment, the ratchet wheel is meshed with the pawl, and the automobile door lock is locked. The pawl bears pressure stress to stop the ratchet wheel from rotating and collides with the mounting bottom plate; the pawl collision position is the plastic-coated part of the elastic body, direct collision between the pawl iron part and the bottom plate iron part is avoided, the collision noise generated when the pawl is pressed to return is reduced, and therefore the sound quality is improved, and the sensory experience of a user is optimized.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a car door lock locking mechanism with a noise reduction structure. Background Technology

[0002] When the car door is closed, the fish mouth of the door lock ratchet part will collide with the lock post, causing the ratchet to rotate around the ratchet axis to the fully locked position. At this time, the ratchet and pawl mesh with each other, and the pawl resists the ratchet from rotating due to the compressive stress, thus forming a stable locking mechanism to ensure that the car door can be reliably closed and always remain locked.

[0003] With the rapid development of the automotive industry, consumers' understanding of cars is constantly deepening, and their needs are becoming more diversified. This has led them to place higher demands on the sensory experience brought by sound during the operation of opening and closing car doors.

[0004] However, in the existing side door lock locking mechanism, both the pawl and the door lock mounting plate are made of metal. During the closing process of the car door, the pawl will have a direct rigid collision with the mounting plate, which will generate high-frequency impact noise. This noise not only reduces the sound quality of the car door opening and closing, but also affects the user's sensory experience.

[0005] Therefore, it is necessary to provide a car door lock locking mechanism with a noise reduction structure to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a car door lock locking mechanism with a noise reduction structure, which solves the problem of high-frequency noise generated by the rigid collision between the pawl and the base plate in the existing side door lock locking mechanism.

[0007] To solve the above-mentioned technical problems, this utility model provides a car door lock locking mechanism with a noise reduction structure, comprising:

[0008] Base plate;

[0009] A pawl, wherein the pawl is disposed on the front side of the base plate;

[0010] A plastic-coated component is disposed on the outer side of the pawl and inside the base plate.

[0011] Preferably, a ratchet shaft is fixedly mounted on the front side of the base plate, and a ratchet is rotatably connected to the outer side of the ratchet shaft.

[0012] Preferably, one side of the ratchet abuts against the side of the pawl.

[0013] Preferably, the plastic-coated part includes a support ring and a limiting ring, wherein the limiting ring is fixedly connected to the inner side of the support ring.

[0014] Preferably, a limiting groove is formed on the outer side of the pawl.

[0015] Preferably, the limiting ring is engaged with the inner side of the limiting groove.

[0016] Preferably, the outer side of the support ring is fitted to the inside of the base plate.

[0017] Compared with related technologies, the car door lock locking mechanism with a noise reduction structure provided by this utility model has the following beneficial effects:

[0018] This utility model provides a car door lock locking mechanism with a noise reduction structure. By setting a plastic-coated part between the pawl and the base plate, when the user closes the car door, the fish mouth of the door lock ratchet part collides with the lock post, and the ratchet rotates around the ratchet axis to the fully locked position. At this time, the ratchet and pawl are engaged, and the pawl bears compressive stress to prevent the ratchet from rotating and collides with the mounting base plate. The collision point of the pawl is a plastic-coated part of an elastic body, which avoids direct impact between the iron parts of the pawl and the iron parts of the base plate, reduces the impact noise when the pawl is pressed back, thereby improving the sound quality and optimizing the user's sensory experience. Attached Figure Description

[0019] Figure 1 A schematic diagram of the first embodiment of a car door lock locking mechanism with a noise reduction structure provided by this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point AA is shown.

[0021] Figure 3 This is a schematic diagram of the second embodiment of a car door lock locking mechanism with a noise reduction structure provided by this utility model.

[0022] The following are the labels in the diagram: 1. Base plate, 2. Ratchet shaft, 3. Ratchet, 4. Pad, 5. Plastic-coated part, 51. Support ring, 52. Limiting ring, 6. Limiting groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] First Embodiment

[0025] Please refer to the following: Figure 1 , Figure 2 ,in, Figure 1 A schematic diagram of the first embodiment of a car door lock locking mechanism with a noise reduction structure provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional structure at point AA. A car door lock locking mechanism with a noise reduction structure includes: a base plate 1;

[0026] Pawl 4, the pawl 4 being disposed on the front side of the base plate 1;

[0027] Plastic-coated component 5 is disposed on the outer side of the pawl 4 and inside the base plate 1.

[0028] A ratchet shaft 2 is fixedly installed on the front of the base plate 1, and a ratchet 3 is rotatably connected to the outer side of the ratchet shaft 2.

[0029] One side of the ratchet 3 abuts against the side of the pawl 4.

[0030] The base plate 1 is made of high-strength metal material, which has good rigidity and stability. Its front side is pre-set with assembly positions for installing ratchet shaft 2 and accommodating plastic-coated parts 5, ensuring accurate positioning of each component.

[0031] The pawl 4 is made of wear-resistant alloy material and has an irregular plate-like structure. One end of it is rotatably connected to the base plate 1 through a rotating shaft, and can rotate around the shaft at a certain angle. The other end is used to engage with the ratchet 3 to achieve the locking function.

[0032] The plastic-coated part 5 is integrally injection molded from elastic materials (such as EPDM rubber, thermoplastic elastomer, etc.), which has good elasticity and fatigue resistance. Its overall structure is adapted to the outer contour of the pawl 4 and can tightly wrap the area where the pawl 4 contacts the base plate 1.

[0033] The ratchet shaft 2 is vertically mounted on the front of the base plate 1 by welding or bolting. Its outer circular surface is precision ground to ensure that the ratchet 3 rotates smoothly. The edge of the ratchet 3 is adapted to the meshing surface of the pawl 4.

[0034] The working principle of the car door lock locking mechanism with a noise reduction structure provided by this utility model is as follows:

[0035] When the door is closed, the fish mouth of the ratchet 3 collides with the locking pin, and the ratchet 3 rotates around the ratchet shaft 2 to the fully locked position. At this time, the ratchet 3 engages with the pawl 4, and the pawl 4 bears compressive stress and moves towards the base plate 1. Since the outer side of the pawl 4 is provided with a plastic-coated part 5, and the plastic-coated part 5 is located inside the base plate 1, the collision between the pawl 4 and the base plate 1 is buffered by the plastic-coated part 5, avoiding direct rigid contact between the metal parts.

[0036] Compared with related technologies, the car door lock locking mechanism with a noise reduction structure provided by this utility model has the following beneficial effects:

[0037] By setting a plastic-coated part 5 between the pawl 4 and the base plate 1, when the user closes the car door, the fish mouth of the door lock ratchet 3 collides with the lock post, and the ratchet 3 rotates around the ratchet shaft 2 to the fully locked position. At this time, the ratchet 3 and the pawl 4 are engaged, and the pawl 4 is subjected to compressive stress to prevent the ratchet 3 from rotating and collides with the mounting base plate 1. The collision point of the pawl 4 is the plastic-coated part 5, which is an elastic material, to avoid direct impact between the iron parts of the pawl 4 and the iron parts of the base plate 1, reduce the impact noise when the pawl 4 is pressed back, thereby improving the sound quality and optimizing the user's sensory experience.

[0038] Second Embodiment

[0039] Please refer to the following: Figure 3 Based on the first embodiment of this application, which provides a car door lock locking mechanism with a noise reduction structure, the second embodiment of this application proposes another car door lock locking mechanism with a noise reduction structure. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0040] Specifically, the second embodiment of this application provides a car door lock locking mechanism with a noise reduction structure, wherein the plastic-coated part 5 includes a support ring 51 and a limiting ring 52, and the limiting ring 52 is fixedly connected to the inner side of the support ring 51.

[0041] The outer side of the pawl 4 is provided with a limiting groove 6.

[0042] The limiting ring 52 is engaged with the inner side of the limiting groove 6.

[0043] The outer side of the support ring 51 is attached to the inside of the base plate 1.

[0044] The working principle of the car door lock locking mechanism with a noise reduction structure provided by this utility model is as follows:

[0045] During installation, the support ring 51 of the plastic-coated part 5 is fitted onto the outer side of the pawl 4, while the limiting ring 52 on the inner side of the support ring 51 is precisely engaged into the pre-set limiting groove 6 on the outer side of the pawl 4. This structural design achieves axial and circumferential limiting of the support ring 51 through the engagement of the limiting ring 52 and the limiting groove 6, ensuring that the plastic-coated part 5 will not be displaced or fall off during the movement of the pawl 4.

[0046] When the door closes and triggers the locking action, the pawl 4 moves towards the base plate 1 under the compressive stress of the ratchet 3. At this time, the outer side of the support ring 51 of the plastic-coated part 5 is tightly fitted with the inside of the base plate 1. Due to the fixing effect of the limiting ring 52 and the limiting groove 6, the support ring 51 can be stably positioned between the pawl 4 and the base plate 1.

[0047] Compared with related technologies, the car door lock locking mechanism with a noise reduction structure provided by this utility model has the following beneficial effects:

[0048] The snap-fit ​​structure between the limiting ring 52 and the limiting groove 6 not only facilitates the installation of the plastic-coated part 5, but also prevents the plastic-coated part 5 from loosening or shifting during repeated ratchet movements, ensuring the long-term reliability of the noise reduction function.

Claims

1. A car door lock locking mechanism with a noise reduction structure, characterized in that, include: Base plate; A pawl, wherein the pawl is disposed on the front side of the base plate; A plastic-coated component is disposed on the outer side of the pawl and inside the base plate.

2. The car door lock locking mechanism with a noise reduction structure according to claim 1, characterized in that, A ratchet shaft is fixedly installed on the front of the base plate, and a ratchet is rotatably connected to the outer side of the ratchet shaft.

3. The car door lock locking mechanism with a noise reduction structure according to claim 2, characterized in that, One side of the ratchet abuts against the side of the pawl.

4. The car door lock locking mechanism with a noise reduction structure according to claim 1, characterized in that, The plastic-coated part includes a support ring and a limiting ring, with the limiting ring fixedly connected to the inner side of the support ring.

5. The car door lock locking mechanism with a noise reduction structure according to claim 4, characterized in that, A limiting groove is provided on the outer side of the pawl.

6. The car door lock locking mechanism with a noise reduction structure according to claim 5, characterized in that, The limiting ring is engaged with the inner side of the limiting groove.

7. A car door lock locking mechanism with a noise reduction structure according to claim 4, characterized in that, The outer side of the support ring is attached to the inside of the base plate.

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