Dual-pull hood lock with sound-damping structure

Abstract

The utility model provides a kind of double-pull hood lock with sound-absorbing structure, comprising: pedestal;Two guide columns, two guide columns are respectively arranged on the two sides of the inner side of pedestal, the outer side of two guide columns is all sleeved with compression spring, the outer side of two guide columns is also slidably connected with springing column.The utility model provides a kind of double-pull hood lock with sound-absorbing structure, by pedestal, two guide columns, compression spring, springing column and sound-absorbing elastomer mutually cooperate, when closing hood, the sound-absorbing elastomer at the top of springing column is first contacted by the lower side of hood, the sound-absorbing elastomer absorbs impact energy by itself deformation, avoid the metal rigid contact of hood and springing column, sharply reduce sharp impact noise, improve the sound quality experience of consumer when using;At the same time, the sound-absorbing elastomer can isolate the direct friction of hood and springing column, reduce the abrasion of the top of springing column, prolong the service life of hood lock, reduce the maintenance cost of later period.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a double-pull hood lock with a noise reduction structure. Background Technology

[0002] The automotive industry is developing rapidly. As consumers gain a better understanding of and have higher demands for automobiles, they are also placing higher requirements on the sensory quality of cars.

[0003] Most hood locks currently operate by directly impacting the hood latch when the hood is closed. This rigid metal-to-metal impact can produce a sharp noise, resulting in poor sound quality and affecting the user experience. Furthermore, prolonged impact can cause wear on the top of the latch, shortening the hood lock's lifespan and increasing future maintenance costs.

[0004] Therefore, it is necessary to provide a double-pull hood lock with a noise-dampening structure to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a double-pull hood lock with a noise reduction structure, which solves the problem that existing hood locks cause loud noise when closing due to the rigid impact between the pop-up pin and the hood, affecting the sensory experience, and causing wear and tear on easily worn parts due to long-term impact.

[0006] To solve the above-mentioned technical problems, this utility model provides a double-pull hood lock with a noise reduction structure, comprising:

[0007] Base;

[0008] Two guide posts are respectively disposed on both sides of the inner side of the base. A compression spring is sleeved on the outer side of each of the two guide posts. A pop-up post is also slidably connected to the outer side of each of the two guide posts. A sound-absorbing elastomer is sleeved on the top of each of the two pop-up posts.

[0009] Preferably, the compression spring is disposed at the bottom of the spring-loaded column and is used to push the elastic element upward.

[0010] Preferably, a limiting groove is formed at the top of the outer side of the pop-up column, and a limiting ring is installed at the bottom of the inner side of the sound-absorbing elastic body.

[0011] Preferably, the limiting ring is engaged with the inner side of the limiting groove.

[0012] Preferably, a first buffer block and a second buffer block are fixedly installed on both sides of the inner side of the base.

[0013] Preferably, the inner side of the base is provided with a pawl, and the inner side of the base is also provided with a ratchet.

[0014] Preferably, one side of the pawl abuts against the side of the second buffer block, and the side of the ratchet abuts against the side of the first buffer block.

[0015] Compared with related technologies, the double-pull hood lock with a noise-dampening structure provided by this utility model has the following beneficial effects:

[0016] This utility model provides a double-pull hood lock with a noise-dampening structure. The hood lock utilizes a base, two guide pillars, a compression spring, a spring-loaded post, and a noise-dampening elastomer in a coordinated manner. When the hood is closed, the lower edge of the hood first contacts the noise-dampening elastomer at the top of the spring-loaded post. The elastomer absorbs impact energy through its own deformation, preventing rigid metal-to-metal contact between the hood and the spring-loaded post, significantly reducing sharp impact noise and improving the sound quality experience for consumers. Simultaneously, the noise-dampening elastomer isolates the hood from direct friction with the spring-loaded post, reducing wear on the top of the spring-loaded post, extending the hood lock's lifespan, and lowering subsequent maintenance costs. Attached Figure Description

[0017] Figure 1 A schematic diagram of the first embodiment of a double-pull hood lock with a noise reduction structure provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shows the structure of the spring-loaded column;

[0019] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the spring-loaded column.

[0020] Figure 4 for Figure 3 The enlarged schematic diagram of part A shown below;

[0021] Figure 5 This is a schematic diagram of the second embodiment of a double-pull hood lock with a noise reduction structure provided by this utility model.

[0022] The following are the labels in the diagram: 1. Base, 2. Guide post, 3. Compression spring, 4. Spring-up post, 41. Limiting groove, 5. Noise-absorbing elastomer, 51. Limiting ring, 6. Ratchet, 7. Pawl, 8. First buffer block, 9. Second buffer block. 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 , Figure 3 , Figure 4 ,in, Figure 1A schematic diagram of the first embodiment of a double-pull hood lock with a noise reduction structure provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the spring-loaded column; Figure 3 for Figure 2 The diagram shows a cross-sectional view of the spring-loaded column. Figure 4 for Figure 3 The enlarged schematic diagram of part A is shown.

[0026] A double-pull hood lock with a noise-reducing structure includes: a base 1;

[0027] Two guide posts 2 are respectively disposed on both sides of the inner side of the base 1. A compression spring 3 is sleeved on the outer side of each of the two guide posts 2. A pop-up post 4 is slidably connected to the outer side of each of the two guide posts 2. A sound-absorbing elastomer 5 is sleeved on the top of each of the two pop-up posts 4.

[0028] The compression spring 3 is located at the bottom of the spring-loaded column 4 and is used to push the elastic column 4 upward.

[0029] A limiting groove 41 is provided on the top of the outer side of the pop-up column 4, and a limiting ring 51 is installed on the bottom of the inner side of the sound-absorbing elastomer 5.

[0030] The limiting ring 51 is engaged with the inner side of the limiting groove 41.

[0031] The sound-absorbing elastomer 5 is made of highly elastic and aging-resistant EPDM rubber material;

[0032] The cooperation between the limiting groove 41 and the limiting ring 51 can prevent the silencing elastomer 5 from axially displacing when the pop-up column 4 is raised or lowered or when the hood is impacted, thus further improving the structural stability.

[0033] The detachable design of the noise-absorbing elastomer 5 makes it easy to replace it individually after wear and tear, reducing maintenance costs.

[0034] The working principle of the double-pull hood lock with a noise reduction structure provided by this utility model is as follows:

[0035] During installation, align the limiting ring 51 at the bottom of the noise-absorbing elastomer 5 with the limiting groove 41 of the pop-up column 4 and snap it in place to ensure that the noise-absorbing elastomer 5 is firmly connected to the pop-up column 4 and will not fall off due to vibration from opening and closing the hood.

[0036] When the hood is closed, the lower edge of the hood first contacts the sound-absorbing elastomer 5 at the top of the pop-up post 4. The sound-absorbing elastomer 5 absorbs the impact energy through its own deformation, avoiding rigid contact between the hood and the pop-up post 4, and greatly reducing impact noise. At the same time, the pressure of the hood pushes the pop-up post 4 to slide down along the guide post 2, compressing the compression spring 3 at the bottom, until the locking mechanism of the hood lock (such as a pawl or ratchet) is engaged, thus locking the hood.

[0037] Compared with related technologies, the double-pull hood lock with a noise-dampening structure provided by this utility model has the following beneficial effects:

[0038] The base 1, two guide pillars 2, compression spring 3, pop-up pillar 4, and noise-absorbing elastomer 5 work together to ensure that when the hood is closed, the lower edge of the hood first contacts the noise-absorbing elastomer 5 on top of the pop-up pillar 4. The noise-absorbing elastomer 5 absorbs the impact energy through its own deformation, avoiding rigid metal-to-metal contact between the hood and the pop-up pillar 4, significantly reducing sharp impact noise and improving the sound quality experience for consumers. At the same time, the noise-absorbing elastomer 5 can isolate the direct friction between the hood and the pop-up pillar 4, reducing wear on the top of the pop-up pillar 4, extending the service life of the hood lock, and reducing later maintenance costs.

[0039] Second Embodiment

[0040] Please refer to the following: Figure 5 Based on the first embodiment of this application which provides a double-pull hood lock with a noise-dampening structure, the second embodiment of this application proposes another double-pull hood lock with a noise-dampening 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.

[0041] Specifically, the difference in the second embodiment of this application regarding a double-pull hood lock with a noise-dampening structure is that, in a double-pull hood lock with a noise-dampening structure, a first buffer block 8 and a second buffer block 9 are respectively fixedly installed on both sides of the inner side of the base 1.

[0042] The inner side of the base 1 is provided with a pawl 7, and the inner side of the base 1 is also provided with a ratchet 6.

[0043] One side of the pawl 7 abuts against the side of the second buffer block 9, and the side of the ratchet 6 abuts against the side of the first buffer block 8.

[0044] The first buffer block 8 and the second buffer block 9 are both made of soft polyurethane and are installed on the inner side of the base 1 by mounting screws.

[0045] The working principle of the double-pull hood lock with a noise reduction structure provided by this utility model is as follows:

[0046] The ratchet 6 and pawl 7 on the inner side of the base 1 are the core locking components of the hood lock. During the opening of the hood, the ratchet 6 and pawl 7 will rotate and contact each other.

[0047] The first buffer block 8 is fixed to the inner side of the base 1. When the ratchet 6 rotates, its side will abut against the first buffer block. The first buffer block 8 absorbs the impact force generated by the rotation of the ratchet 6 through deformation, avoids rigid collision between the ratchet 6 and the base 1, and reduces internal mechanical noise.

[0048] The second buffer block 9 cooperates with the pawl 7. When the pawl 7 rotates around the pivot, one side of it abuts against the second buffer block 9. The second buffer block 9 provides buffering force for the pawl 7, preventing the pawl 7 from colliding with the base 1 due to inertia at the moment of unlocking, and further reducing the movement noise inside the lock body.

[0049] Compared with related technologies, the double-pull hood lock with a noise-dampening structure provided by this utility model has the following beneficial effects:

[0050] The base 1, first buffer block 8, second buffer block 9, pawl 7, and ratchet 6 work together to ensure that when the hood is opened, the side of the ratchet 6 abuts against the first buffer block 8. The first buffer block 8 absorbs the impact force generated by the rotation of the ratchet 6 through its own deformation, avoiding a rigid collision between the ratchet 6 and the base 1 and reducing the internal movement noise of the lock body. At the same time, when the pawl 7 rotates around the pivot, one side abuts against the second buffer block 9. The second buffer block 9 provides buffering force for the pawl 7, preventing the pawl 7 from colliding with the base 1 due to inertia at the moment of unlocking, further reducing internal mechanical noise and comprehensively improving the sound quality of the car hood lock, meeting consumers' high requirements for the sensory quality of the car.

Claims

1. A double-pull hood lock with a noise-dampening structure, characterized in that, include: Base; Two guide posts are respectively disposed on both sides of the inner side of the base. A compression spring is sleeved on the outer side of each of the two guide posts. A pop-up post is also slidably connected to the outer side of each of the two guide posts. A sound-absorbing elastomer is sleeved on the top of each of the two pop-up posts.

2. The double-pull hood lock with a noise-dampening structure according to claim 1, characterized in that, The compression spring is located at the bottom of the spring-loaded column and is used to push the elastic element upward.

3. A double-pull hood lock with a noise-dampening structure according to claim 1, characterized in that, A limiting groove is provided on the top of the outer side of the pop-up column, and a limiting ring is installed on the bottom of the inner side of the sound-absorbing elastic body.

4. A double-pull hood lock with a noise-dampening structure according to claim 3, characterized in that, The limiting ring is engaged with the inner side of the limiting groove.

5. A double-pull hood lock with a noise-dampening structure according to claim 1, characterized in that, The first buffer block and the second buffer block are fixedly installed on both sides of the inner side of the base, respectively.

6. A double-pull hood lock with a noise-dampening structure according to claim 5, characterized in that, The inner side of the base is provided with a pawl, and the inner side of the base is also provided with a ratchet.

7. A double-pull hood lock with a noise-dampening structure according to claim 6, characterized in that, One side of the pawl abuts against the side of the second buffer block, and the side of the ratchet abuts against the side of the first buffer block.

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