A vehicle door latch and vehicle

Abstract

The application relates to the field of vehicle door locks, and discloses a vehicle door lock catch and a vehicle. The vehicle door lock catch comprises a catch body and a buffer layer covering the outer surface of the catch body. The buffer layer is used for engaging a lock bolt of a vehicle door lock body. The vehicle comprises a vehicle body, a sliding door, a vehicle door lock body and the vehicle door lock catch. The vehicle door lock body is mounted on the sliding door, and the vehicle door lock catch is mounted on the vehicle body. The vehicle door lock body and the vehicle door lock catch are used for keeping the sliding door in a fully open position. The buffer layer is arranged on the outer surface of the catch body, the catch body is connected to the lock bolt through the buffer layer, the buffer layer can absorb the collision energy of the catch body and the lock bolt and reduce the impact sound, the problem that obvious impact sound is generated when the vehicle door lock body and the vehicle door lock catch are mutually buckled is solved, and the user experience is improved.

Description

Technical Field

[0001] This application belongs to the field of vehicle door lock technology, specifically relating to a vehicle door lock latch and a vehicle. Background Technology

[0002] A car door lock is a device that locks a vehicle door by engaging the door lock body and the door latch. For vehicles with sliding doors, when the sliding door is fully open, an additional door lock is usually required to hold it in place, such as the locking mechanism disclosed in Chinese patent application CN201474460U, which holds a sliding door in the fully open position. In this patent, when the sliding door is fully open, the door's locking mechanism engages with the locking mechanism on the vehicle body, holding the door in place. Even on a slope, the door is well held in place and will not slide due to gravity, eliminating the risk of injury to people or property.

[0003] In the existing technology, during the locking and unlocking process of the car door lock body, the contact between the lock tongue of the car door lock body and the door latch will produce a noticeable impact sound, causing discomfort to the user. Utility Model Content

[0004] The purpose of this application is to provide a door lock latch and a vehicle to solve the problem of obvious impact noise when the door lock body and the door lock latch are engaged, thereby reducing impact noise and improving user experience.

[0005] To achieve the above objectives, a first aspect of this application provides a door latch, comprising:

[0006] Lock body;

[0007] A buffer layer covers the outer surface of the latch body; the buffer layer is used to engage the latch of the door lock body.

[0008] In some embodiments, the buffer layer is eccentrically wrapped around the outer surface of the latch body, and the thickness of the buffer layer on both sides of the latch body is different.

[0009] In some embodiments, the thickness of the buffer layer on one side of the latch body is 2-3 times the diameter of the latch body.

[0010] In some embodiments, the buffer layer has pores or cavities distributed inside.

[0011] In some embodiments, the buffer layer includes at least one of thermoplastic vulcanizate (TPV), ethylene propylene diene monomer (EPDM), styrene-based polystyrene (TPES), and thermoplastic polyolefin (TPO).

[0012] In some embodiments, the outer surface of the buffer layer is textured.

[0013] In some embodiments, a plurality of annular notches are arranged on the outer surface of the latch body.

[0014] In some embodiments, the locking body is a "U"-shaped rod, an "I"-shaped rod, or a "T"-shaped rod.

[0015] In some embodiments, the door latch further includes a latch base plate for fixing the door latch to a mounting plane, the latch base plate having a through hole, and the bottom end of the latch body being riveted to the through hole of the latch base plate.

[0016] A second aspect of this application provides a vehicle including the aforementioned door latch.

[0017] Compared with the prior art, the beneficial effects of this application are as follows:

[0018] This application solves the problem of noticeable impact noise when the door lock body and the door latch are engaged by covering the outer surface of the latch body with a buffer layer. The buffer layer can absorb the collision energy of the two and reduce the impact noise, thereby improving the user experience.

[0019] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0021] Figure 1 This is a schematic diagram illustrating the interlocking of the door lock latch and the door lock body in a specific embodiment of this application.

[0022] Figure 2 The cross-sectional view of the door latch using a "U"-shaped rod in the specific embodiment of this application is shown.

[0023] Figure 3 The cross-sectional view of the door latch using a "T"-shaped rod is shown in the specific embodiment of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Lock body; 11. Notch; 2. Buffer layer; 21. Air hole; 3. Lock base plate; 4. Door lock body. Detailed Implementation

[0025] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0026] like Figures 1 to 3 As shown, a car door latch includes:

[0027] Lock body 1;

[0028] The buffer layer 2 covers the outer surface of the latch body 1; the buffer layer 2 is used to engage the latch of the door lock body 4.

[0029] In this application, the outer surface of the latch body 1 is covered with a buffer layer 2 of a certain thickness. When the door latch and the door lock body 4 are engaged, the latch body 1 is connected to the latch tongue through the buffer layer 2. The buffer layer 2 can absorb the collision energy of the two and reduce the impact sound, thereby solving the problem of obvious impact sound when the door lock body 4 and the door latch are engaged, and improving the user experience.

[0030] Specifically, the buffer layer 2 is eccentrically wrapped around the outer surface of the latch body 1, and the thickness of the buffer layer 2 on both sides of the latch body 1 is different. Compared to concentric wrapping, the thickness of the buffer layer 2 on one side of the latch body 1 is greater than the thickness of the buffer layer 2 on the other side. By adjusting the installation angle of the door latch, during the process of the door latch and the door lock body 4 engaging with each other, the thicker side of the buffer layer 2 first contacts the bolt, absorbing most of the energy of the collision, and then gradually completes the engagement connection, so that the buffer layer 2 can fully realize the collision buffer between the latch body 1 and the bolt, thereby further reducing the impact sound.

[0031] Furthermore, the thickness of the buffer layer 2 on one side of the latch body 1 is 2-3 times the diameter of the latch body 1. That is, the thickness of the buffer layer 2 on the thicker side is 2-3 times the diameter of the latch body 1. The buffer layer 2 is usually made of a relatively soft material, and to achieve optimal buffering performance, the thickness of the buffer layer 2 is at least twice that of the latch body 1. Of course, the thickness of the buffer layer 2 should not exceed three times that of the latch body 1, so that the external dimensions of the door latch are as compatible as possible with the specifications of the latch tongue of the existing door lock body 4.

[0032] Specifically, the buffer layer 2 has pores 21 or cavities distributed inside. Compared with the homogeneous and dense buffer layer 2, the pores 21 or cavities can cause the buffer layer 2 to produce greater elastic deformation during the collision with the latch, and absorb more collision energy through the greater elastic deformation, thereby enhancing the buffer performance of the buffer layer 2 and further reducing the impact sound.

[0033] Specifically, the material of the buffer layer 2 is one of thermoplastic vulcanized rubber (TPV), ethylene propylene diene monomer (EPDM), styrene-based polystyrene (TPES), or thermoplastic polyolefin (TPO).

[0034] Specifically, the outer surface of the buffer layer 2 is textured. The texture, as a decorative pattern, enhances the appearance of the door latch.

[0035] like Figure 2 As shown, specifically, a number of annular notches 11 are arranged at intervals on the outer surface of the latch body 1. The notches 11 can increase the bonding area between the latch body 1 and the buffer layer 2, and at the same time, they can form a form-position fit between the latch body 1 and the buffer layer 2, that is, the surface protrusions of the buffer layer 2 are engaged in the notches 11 of the latch body 1, thereby improving the firmness of the buffer layer 2 covering the latch body 1 and preventing the buffer layer 2 from shifting or falling off under the impact of the latch tongue.

[0036] Specifically, the locking body 1 is a "U"-shaped rod, an "I"-shaped rod, or a "T"-shaped rod.

[0037] like Figure 3 As shown, specifically, the door latch also includes a latch base plate 3 fixed to the bottom end of the latch body 1, which is used to fix the door latch on the mounting surface.

[0038] Furthermore, the latch base plate 3 is provided with a through hole, and the bottom end of the latch body 1 is riveted and fixed to the through hole of the latch base plate 3.

[0039] In some embodiments, both the latch body 1 and the buffer layer 2 have circular cross-sections. The latch body 1 is a metal rod. A plurality of annular grooves are machined at intervals on the outer surface of the latch body 1 as notches 11. For a "U"-shaped rod, notches 11 should be provided on both its vertical and horizontal sides.

[0040] The buffer layer 2 can be applied to the outer surface of the latch body 1 using injection molding, and simultaneously embedded within the notch 11 of the latch body 1. The buffer layer 2 can cover the entire outer surface of the latch body 1, or it can only cover the portion of the outer surface where the latch body 1 engages with the latch tongue. The pores 21 or cavities inside the buffer layer 2 can be achieved using a material foaming process. The texture of the outer surface of the buffer layer 2 is a diamond-shaped mesh pattern.

[0041] The locking base plate 3 has a through hole in the middle. The two top ends of the "U"-shaped rod, or the bottom end of the "I"-shaped rod, or the bottom end of the "T"-shaped rod pass through the through hole and are riveted to the locking base plate 3. The edge of the locking base plate 3 usually has several mounting holes for fastening with the mounting surface.

[0042] In some embodiments, during the production process of the door latch, the latch body 1 is first bent and the notch 11 on the outer surface is processed. After the latch body 1 is cleaned, it is placed into the mold for injection molding of the buffer layer 2. Finally, the latch base plate 3 is riveted and fixed at the bottom of the latch body 1.

[0043] In some embodiments, during the production process of the door latch, the latch body 1 is first bent and the notch 11 on the outer surface is processed. Then, the latch base plate 3 is welded and fixed at the bottom of the latch body 1. Finally, after cleaning, the latch body 1 is placed into a mold, and the buffer layer 2 is injection molded on the local outer surface of the latch body 1 that needs to engage with the latch tongue.

[0044] A vehicle (not shown in the figure) includes: a body, a sliding door, a door lock body, and the aforementioned door latch; wherein the door lock body is mounted on the sliding door, the door latch is mounted on the body, and the door lock body and the door latch are used to keep the sliding door in the fully open position.

[0045] In this application, compared to existing door latches of the same size, the aforementioned door latch has a certain thickness of buffer layer on its outer surface, resulting in lower structural strength. Therefore, it is typically used to maintain the fully open position of sliding doors. When the sliding door moves to or disengages from the fully open position, the aforementioned door latch can reduce the impact noise generated when it engages with the door lock body, thereby improving the sound quality of the sliding door operation and enhancing the user's operating experience.

[0046] In some embodiments, the sliding door opens rearward relative to the vehicle body, the door lock body is installed at the lower rear corner of the sliding door, and the door latch is riveted or screwed onto the corresponding lower rear corner of the vehicle body through mounting holes on the latch base plate.

[0047] In some embodiments, when the sliding door is moved to the fully open position, the door lock body on the sliding door engages with the door latch on the vehicle body, and the latch tongue engages with the latch body, keeping the sliding door in the fully open position. When the handle of the sliding door is pulled, the door lock body on the sliding door unlocks, the latch tongue separates from the latch body, and the sliding door resumes free sliding.

[0048] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A car door latch, characterized in that, The door latch includes: Lock body (1); A buffer layer (2) is used to cover the outer surface of the latch body (1); the buffer layer (2) is used to engage the latch of the door lock body (4).

2. The door latch according to claim 1, characterized in that, The buffer layer (2) is eccentrically wrapped around the outer surface of the latch body (1), and the thickness of the buffer layer (2) on both sides of the latch body (1) is different.

3. The door latch according to claim 2, characterized in that, The thickness of the buffer layer (2) on one side of the latch body (1) is 2-3 times the diameter of the latch body (1).

4. The door latch according to any one of claims 1 to 3, characterized in that, The buffer layer (2) has pores (21) or air pockets distributed inside.

5. The door latch according to any one of claims 1 to 3, characterized in that, The buffer layer (2) includes at least one of thermoplastic vulcanized rubber (TPV), ethylene propylene diene monomer (EPDM), styrene-based polystyrene (TPES), and thermoplastic polyolefin (TPO).

6. The door latch according to any one of claims 1 to 3, characterized in that, The outer surface of the buffer layer (2) is textured.

7. The door latch according to any one of claims 1 to 3, characterized in that, The outer surface of the latch body (1) has several annular notches (11).

8. The door latch according to any one of claims 1 to 3, characterized in that, The locking body (1) is a "U" shaped rod, an "I" shaped rod, or a "T" shaped rod.

9. The door latch according to any one of claims 1 to 3, characterized in that, The door latch also includes a latch base plate (3) for fixing the door latch on the mounting plane. The latch base plate (3) has a through hole, and the bottom end of the latch body (1) is riveted to the through hole of the latch base plate (3).

10. A vehicle, characterized in that, The vehicle includes a door latch according to any one of claims 1 to 9.

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