A high comfort two-stage seat lock

Abstract

The utility model discloses a high comfort two -stop seat lock, including seat lock body, seat lock body include: casing and apron, casing be fixed with lock jaw subassembly and pawl subassembly through the installation shaft spacing in, lock jaw subassembly from inside to outside be comfortable piece, safety piece, stop lock jaw in proper order, pawl subassembly from inside to outside be pawl insert and stop point in proper order, stop lock jaw and stop point intercoordination, and the mutual cooperation between pawl insert and safety piece, the one side of safety piece and pawl insert contact is provided with the profile, the profile and safety piece are integrated constitution. Advantageous effects are: the profile is the eccentric circle that is greater than pawl insert movement profile, effectively improve the clearance between stop lock jaw and stop point, two -stop position can be directly adjusted to one -stop position, and stop lock jaw will not cause the jam phenomenon between stop point, and will not appear false lock phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to a high-comfort two-position seat lock. Background Technology

[0002] A two-position seat lock is a locking device for car seats, featuring two different locking positions that provide varying degrees of seat fixation and adjustment. In sedans, it's primarily used for rear seats, allowing passengers to adjust their seat position according to their size and driving habits, and maintaining seat stability while the vehicle is in motion. In SUVs and MPVs, where the space is larger and seat adjustment needs are more diverse, a two-position seat lock better meets passengers' requirements for both comfort and safety.

[0003] However, in the process of implementing the utility model technical solution in the embodiments of this application, the applicant discovered that the above-mentioned technology has at least the following technical problems: When shifting from second to first gear, if the gap between the stop pawl and the stop point is too small, the stop point will get stuck or be blocked by the stop pawl. The pawl will wobble by 4.1mm within the lock body, which can easily lead to false locking. Utility Model Content

[0004] This application provides a high-comfort two-position seat lock by setting a contour surface, which effectively increases the gap between the stop lock claw and the stop point. The second position can be directly adjusted to the first position, and the stop lock claw will not cause jamming between the stop point, thus preventing false locking.

[0005] This application provides a high-comfort two-position seat lock, including a seat lock body. The seat lock body includes a housing and a cover plate. A locking claw assembly and a ratchet assembly are fixedly positioned inside the housing by a mounting shaft. The locking claw assembly consists of a comfort plate, a safety plate, and a stop locking claw from the inside to the outside. The ratchet assembly consists of a ratchet insert and a stop point from the inside to the outside. The stop locking claw and the stop point cooperate with each other, and the ratchet insert and the safety plate cooperate with each other. The side of the safety plate that contacts the ratchet insert has a contour surface, and the contour surface and the safety plate are integrally formed.

[0006] Furthermore, the contour surface is an eccentric circle larger than the movement contour of the pawl insert. The contour surface is a cylindrical surface with a diameter of 91.4±0.1mm. The side of the pawl insert that contacts the contour surface is a cylindrical surface with a diameter of 87.4±0.1mm. The thickness of the left side of the contour surface is 1.1±0.05mm, and the thickness of the right side is 2.2±0.05mm. The pawl insert and the safety plate are in line contact.

[0007] Furthermore, when the stop lock claw is opened to its maximum, the gap between the end of the stop lock claw and the stop point is 4.4mm ± 0.05mm; when the safety plate moves to the open position and the stop lock claw moves synchronously to the open state, the gap between the end of the stop lock claw and the stop point is 2.3mm ± 0.05mm.

[0008] Furthermore, the pawl insert cooperates with the lock body, eliminating the wobbling amplitude of the lock body within the pawl insert.

[0009] Furthermore, the safety plate is provided with reset power by a torsion spring, and the stop pawl, stop point, and ratchet insert are provided with reset power by a return spring.

[0010] Furthermore, in the first locking position, the stop point is engaged by the stop pawl, and the pawl insert engages with the safety plate to lock; in the second locking position, the safety plate and the stop pawl rotate, the stop point is not blocked by the stop pawl, and the pawl insert engages with the safety plate to lock.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: A contour surface is set on the traditional safety plate. The contour surface is an eccentric circle that is larger than the movement contour of the pawl insert. This effectively increases the gap between the stop pawl and the stop point. The second position can be directly adjusted to the first position. The stop pawl will not cause jamming between itself and the stop point, and there will be no false locking. The original wobbling amplitude (4.1mm) of the lock body in the pawl insert is effectively eliminated, thereby improving the stability of the lock body and enhancing the comfort and convenience of the occupant's seat. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the stopped locking claw in the open state of this utility model; Figure 2 This is a schematic diagram of the second gear resetting to the first gear state of this utility model; Figure 3 This is a schematic diagram of the specific structure of the safety plate in this utility model. Detailed Implementation

[0013] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0014] Example: A high-comfort two-position seat lock includes a seat lock body 1. The seat lock body 1 includes a housing and a cover plate. A locking claw assembly and a ratchet assembly are fixed inside the housing by a mounting shaft. The locking claw assembly consists of a comfort plate, a safety plate 3, and a stop locking claw 2 from the inside to the outside. The ratchet assembly consists of a ratchet insert 5 and a stop point 4 from the inside to the outside. The stop locking claw 2 and the stop point 4 cooperate with each other. The ratchet insert 5 and the safety plate 3 cooperate with each other. A contour surface 301 is provided on the side of the safety plate 3 that contacts the ratchet insert 5. The contour surface 301 and the safety plate 3 are integrally formed. The outline surface 301 is an eccentric circle larger than the movement outline of the pawl insert 5. The outline surface 301 is a cylindrical surface with a diameter of 91.4±0.1mm. The side of the pawl insert 5 that contacts the outline surface 301 is a cylindrical surface with a diameter of 87.4±0.1mm. The thickness of the left side of the outline surface 301 is 1.1±0.05mm, and the thickness of the right side is 2.2±0.05mm. The pawl insert 5 and the safety plate 3 are in line contact. When the stop pawl 2 is opened to its maximum, the gap between the end of the stop pawl 2 and the stop point 4 is 4.4mm±0.05mm. When the safety plate 3 moves to the open position and the stop pawl 2 moves synchronously to the open position, the gap between the end of the stop pawl 2 and the stop point 4 is 2.3mm±0.05mm. The pawl insert 5 cooperates with the lock body, and the swaying amplitude (4.1mm) of the lock body within the pawl insert 5 is eliminated. The safety plate 3 is provided with reset power by a torsion spring, and the stop pawl 2, the stop point 4, and the pawl insert 5 are provided with reset power by a return spring. When the seat lock is in the first locked position, the stop point 4 is limited and engaged by the stop pawl 2, and the pawl insert 5 engages with the safety plate 3 for locking. When the seat lock is in the second locked position, the safety plate 3 and the stop pawl 2 rotate, the stop point 4 is not blocked by the stop pawl 2, and the pawl insert 5 engages with the safety plate 3 for locking.

[0015] When a traditional seat lock resets from the second position to the first position: when the safety plate 3 reaches the open position, the stop pawl 2 moves synchronously to the open state. At this time, the gap between the safety plate 3 and the stop point 4 is only 0.6mm. The pawl insert 5 continues to rotate clockwise. Due to the eccentricity of the contour surface 301 of the safety plate 3 and the pawl movement trajectory, the safety plate 3 will reset counterclockwise during the clockwise movement of the pawl insert 5 under the influence of the torsion spring force. The gap between the stop pawl 2 and the stop point 4 will be eliminated, and the stop point 4 will become stuck or blocked by the stop pawl 2, resulting in a stuck false lock phenomenon.

[0016] In this application, the contour surface 301 of the safety plate 3 is added, increasing the gap between the stop pawl 2 and the stop point 4 to 2.3mm, allowing the stop point 4 to rotate to the first position before the stop pawl 2 resets. Based on the movement contour of the pawl insert 5, the contact contour surface 301 of the safety plate 3 is modified by increasing its thickness by 1.1mm-2.2mm, preventing the safety plate 3 and the stop pawl 2 from rotating counterclockwise before the pawl insert 5 resets to the first position, thus reducing the gap between the stop pawl 2 and the stop point 4. It is evident that modifying the safety plate 3 plays a decisive role in preventing the jamming phenomenon when shifting the seat lock from the second to the first position, thereby improving the convenience of seat adjustment angle. There is no need to go from the second position to the fully open position and then to the fully locked position; the seat can be directly adjusted from the second position to the first position, significantly improving the comfort and convenience of the occupant's seat seating.

[0017] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0018] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high-comfort two-position seat lock, comprising a seat lock body, wherein the seat lock body comprises: The housing and cover are characterized in that a locking pawl assembly and a ratchet assembly are fixedly positioned inside the housing by a mounting shaft. The locking pawl assembly consists of a comfort plate, a safety plate, and a stop locking pawl from the inside to the outside. The ratchet assembly consists of a ratchet insert and a stop point from the inside to the outside. The stop locking pawl and the stop point cooperate with each other, and the ratchet insert and the safety plate cooperate with each other. The side of the safety plate that contacts the ratchet insert is provided with a contour surface, and the contour surface and the safety plate are integrally formed.

2. The high-comfort two-position seat lock as described in claim 1, characterized in that: The outline surface is an eccentric circle larger than the movement outline of the pawl insert. The outline surface is a cylindrical surface with a diameter of 91.4±0.1mm. The side of the pawl insert that contacts the outline surface is a cylindrical surface with a diameter of 87.4±0.1mm. The thickness of the left side of the outline surface is 1.1±0.05mm, and the thickness of the right side is 2.2±0.05mm. The pawl insert and the safety plate are in line contact.

3. The high-comfort two-position seat lock as described in claim 1, characterized in that: When the stop lock claw is fully opened, the gap between the end of the stop lock claw and the stop point is 4.4mm ± 0.05mm; when the safety plate moves to the open position and the stop lock claw moves synchronously to the open state, the gap between the end of the stop lock claw and the stop point is 2.3mm ± 0.05mm.

4. A high-comfort two-position seat lock as described in claim 1, characterized in that: The pawl insert engages with the lock body, eliminating the wobbling amplitude of the lock body within the pawl insert.

5. A high-comfort two-position seat lock as described in claim 1, characterized in that: The safety plate is provided with reset power by a torsion spring, and the stop pawl, stop point, and ratchet insert are provided with reset power by a return spring.

6. A high-comfort two-position seat lock as described in claim 1, characterized in that: When the seat lock is in the first locking position, the stop point is engaged by the stop pawl, and the pawl insert engages with the safety plate to lock. When the seat lock is in the second locking position, the safety plate and the stop pawl rotate, the stop point is not blocked by the stop pawl, and the pawl insert engages with the safety plate to lock.

Images