Integrated two-gear seat lock
By setting guide plates and metal parts on the pawl insert and spring limiting holes on the stop insert, the problems of locking pin guidance and spring loosening are solved, thereby improving the service life and engagement strength of the lock body.
Patent Information
- Application Number
- CN202520669762.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-10
AI Technical Summary
The pawl insert needs guidance when it contacts the locking pin, the spring of the stop insert is prone to loosening, and the stop pawl is prone to deformation or damage during engagement and operation.
A guide plate and a metal part are provided on the pawl insert, and the metal part is provided on the guide plate to guide the locking pin; a spring limiting hole is provided on the stop insert to fix the spring; the contact length between the pawl tip and the stop insert is increased.
Ensure the lock body smoothly enters the second position, prevent the spring from loosening, increase the engagement area, enhance static load strength, and extend service life.
Smart Images
Figure CN223919153U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to an integrated 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:
[0004] The pawl insert needs to be guided when it comes into contact with the locking pin so that the lock body can smoothly enter the second position;
[0005] During long-term operation and reset, the spring on the stop insert is prone to loosening, so the connection between the stop insert and the spring needs to be improved to meet the usage requirements.
[0006] When the stop lock pawl engages and operates with the stop insert for a long time, the stop lock pawl may deform or be damaged, so it is necessary to ensure the load strength of the parts. Utility Model Content
[0007] This application provides an integrated two-position seat lock. A guide plate is provided on the pawl insert, and a metal part is provided on the guide plate to smoothly guide the lock pin and ensure that the lock body can smoothly enter the second position. A spring limiting hole is provided on the stop insert to fix the spring, which can effectively limit and fix the stop return spring, increase the contact length between the pawl tip and the stop insert, increase the force-bearing area of the engagement, and ensure the static load strength of the stop pawl and the stop insert.
[0008] This application provides an integrated two-position seat lock, including a lock body and a cover plate. The lock body is characterized by having a locking claw assembly, a ratchet assembly, and an unlocking handle. An indicator is provided on one side of the lock body near the unlocking handle. The locking claw assembly and the ratchet assembly are fixed to the lock body via a mounting shaft. The locking claw assembly includes a stop locking claw, a safety plate, and a comfort plate, arranged sequentially from the outside to the inside on the mounting shaft. The ratchet assembly includes a stop insert and a ratchet insert, with the ratchet insert located outside the stop insert. A washer is provided on the mounting shaft between the ratchet insert and the stop insert. The lock body is fitted with a cover plate, and the lock body and the cover plate are fixed together by riveting with the mounting shaft.
[0009] Furthermore, the indicator is provided with an indicator return spring, the two ends of which are respectively connected to the indicator and the lock body, and the indicator return spring provides the indicator with the power to reset.
[0010] The unlocking handle is equipped with an unlocking handle return spring, which is connected to both the unlocking handle and the lock body. The unlocking handle return spring provides the unlocking handle with the power to reset.
[0011] The stop lock pawl is equipped with a stop pawl return spring, which is connected to the stop lock pawl and the lock body respectively, and provides reset power to the stop lock pawl;
[0012] The safety plate is provided with a safety plate torsion spring, which is connected to the safety plate and the lock body respectively, and provides the safety plate torsion spring with the reset force.
[0013] The comfort plate is provided with a comfort plate return spring, which is connected to the comfort plate and the lock body respectively. The safety plate torsion spring provides the reset power to the safety plate. The comfort plate is connected to the unlocking handle. When the comfort plate returns to its original position, it also drives the unlocking handle to reset.
[0014] The stop insert is provided with a stop return spring, which is connected to the stop insert and the lock body respectively, and provides the stop insert with reset power;
[0015] The pawl insert is equipped with a pawl return spring, which is connected to the stop insert and the lock body respectively. The stop return spring provides reset power to the stop insert.
[0016] Furthermore, the pawl insert is provided with a guide plate, which is riveted and fixed to the pawl insert by two rivets. A metal part is provided on the guide plate, which is in close contact with the pawl insert and is integrally formed with the guide plate. The guide plate is located on the side close to the lock body. The end of the guide plate is covered with plastic, and the guide plate has an arc surface that guides the lock rod.
[0017] Furthermore, the stop insert, guide plate, and pawl insert are respectively provided with stop plastic coating, guide plate plastic coating, and pawl plastic coating. The stop insert is provided with a spring limiting hole. The spring limiting hole is strip-shaped and cooperates with the stop return spring. One end of the stop return spring is hooked into the spring limiting hole.
[0018] Furthermore, the mounting shaft is provided with multiple stepped surfaces, which cooperate with the stop lock claw, safety plate, comfort plate, stop insert and ratchet insert. The lower end of the mounting shaft is provided with a flange stepped surface, which is embedded in the lock body. The lower surface of the flange stepped surface is flush with the lower surface of the lock body.
[0019] Furthermore, one end of the stop lock claw is provided with a claw tip, which engages with the stop insert. One side of the claw tip is in contact with the stop insert, and the length of the contact area is 7-10mm.
[0020] Furthermore, the unlocking handle is provided with reinforcing ribs, which are evenly distributed in a grid pattern on the unlocking handle. An unlocking paddle is provided at the end of the unlocking handle, and the unlocking paddle and the unlocking handle are integrally formed. A triangular reinforcing block is provided between the unlocking handle and the unlocking paddle, and the reinforcing block is connected and fixed to the unlocking handle and the unlocking paddle by welding.
[0021] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:
[0022] 1. By setting a guide plate on the pawl insert, and setting a metal part on the guide plate, the locking pin can be smoothly guided, ensuring that the lock body can smoothly enter the second position. By coating the guide plate with plastic, direct contact between the guide plate and the locking pin is prevented, avoiding abnormal noise from contact with the locking pin and improving its service life.
[0023] 2. By setting spring limiting holes on the stop insert to fix the spring, the stop return spring can be effectively limited and fixed, preventing it from loosening during use, ensuring its normal operation, and improving the stability of the component.
[0024] 3. The engagement length between the claw tip and the stop insert is increased by 1 / 5 to 1 / 4 compared to the traditional engagement length. This increases the meshing force area, ensures the static load strength of the stop lock claw and the stop insert, prevents the parts from deforming or being damaged due to excessive load, and improves the service life of the stop lock claw and the stop insert. Attached Figure Description
[0025] Figure 1 This is an exploded view of the present invention;
[0026] Figure 2 This is a schematic diagram showing the engagement of the stop lock claw and the stop insert in this utility model;
[0027] Figure 3 This is a schematic diagram of the assembly of the stop insert and the stop return spring in this utility model;
[0028] Figure 4 This is an exploded view of the pawl insert in this utility model;
[0029] Figure 5 This is a sectional view of the mounting shaft in this utility model;
[0030] Figure 6 This is a schematic diagram of the unlocking handle in this utility model;
[0031] Figure 7 for Figure 6 Side view;
[0032] Figure 8 This is a schematic diagram of the initial locking position of this utility model;
[0033] Figure 9 This is a schematic diagram of the first gear position of this utility model;
[0034] Figure 10 This is a schematic diagram of the second gear position of this utility model. Detailed Implementation
[0035] It is recommended to begin with a paragraph stating the core technical problem that this application aims to solve, and the means to solve this core technical problem. Provide a summary but clear description of the technical solutions to be used and the technical effects that can be achieved.
[0036] 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. Example
[0037] An integrated two-position seat lock includes a lock body 10 and a cover plate 1. The lock body 10 is provided with a locking claw assembly, a ratchet assembly, and an unlocking handle 7. An indicator 8 is provided on one side of the lock body 10 of the unlocking handle 7. The locking claw assembly and the ratchet assembly are fixed to the lock body 10 by a mounting shaft 13. The locking claw assembly includes a stop locking claw 2, a safety plate 3, and a comfort plate 4. The stop locking claw 2, the safety plate 3, and the comfort plate 4 are arranged sequentially from the outside to the inside on the mounting shaft 13. The ratchet assembly includes a stop insert 21 and a ratchet insert 18. The ratchet insert 18 is located outside the stop insert 21. A washer 19 is provided on the mounting shaft 13 between the ratchet insert 18 and the stop insert 21. The washer 19 can prevent wear between the ratchet insert 18 and the stop insert 21. The lock body 10 is provided with a cover plate 1. The lock body 10 and the cover plate 1 are fixed together by riveting the mounting shaft 13.
[0038] The indicator 8 is provided with an indicator return spring 9, and the two ends of the indicator return spring 9 are respectively connected to the indicator 8 and the lock body 10. The indicator return spring 9 provides the indicator 8 with the power to reset.
[0039] The unlocking handle 7 is provided with an unlocking handle return spring 6, which is connected to the unlocking handle 7 and the lock body 10 respectively. The unlocking handle return spring 6 provides the unlocking handle 7 with the power to reset.
[0040] The stop lock claw 2 is provided with a stop lock claw return spring 11, which is connected to the stop lock claw 2 and the lock body 10 respectively. The stop lock claw return spring 11 provides reset power to the stop lock claw 2.
[0041] The safety plate 3 is provided with a safety plate torsion spring 5, which is connected to the safety plate 3 and the lock body 10 respectively. The safety plate torsion spring 5 provides the safety plate 3 with the reset power.
[0042] The comfort plate 4 is provided with a comfort plate return spring 12, which is connected to the comfort plate 4 and the lock body 10 respectively. The safety plate torsion spring 5 provides reset power to the safety plate 3. The comfort plate 4 is connected to the unlocking handle 7. When the comfort plate 4 returns to its original position, it also drives the unlocking handle 7 to reset.
[0043] The stop insert 21 is provided with a stop return spring 14, which is connected to the stop insert 21 and the lock body 10 respectively, and provides the stop insert 21 with reset power.
[0044] The pawl insert 18 is provided with a pawl return spring 15, which is connected to the stop insert 21 and the lock body 10 respectively. The stop return spring 14 provides reset power to the stop insert 21.
[0045] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:
[0046] The indicator return spring 9, the unlocking handle return spring 6, the stop lock pawl return spring 11, the safety plate torsion spring 5, the comfort plate return spring 12, the stop point return spring 14, and the pawl return spring 15 provide power for the operation and reset of each component. Among them, the spring is fixed by setting a spring limiting hole 211 on the stop point insert 21, which can effectively limit and fix the stop point return spring 14, prevent it from loosening during use, ensure its normal operation, and improve the stability of the component. Example
[0047] An integrated two-position seat lock, wherein the stop insert 21, guide plate 17 and pawl insert 18 are respectively provided with stop plastic coating 22, guide plate plastic coating 16 and pawl plastic coating 20. The stop insert 21 is provided with a spring limiting hole 211. The spring limiting hole 211 is strip-shaped and cooperates with the stop return spring 14. One end of the stop return spring 14 is hooked into the spring limiting hole 211.
[0048] The pawl insert 18 is provided with a guide plate 17, which is riveted to the pawl insert 18 by two rivets. The guide plate 17 is provided with a metal part 171, which is in close contact with the pawl insert 18. The metal part 171 and the guide plate 17 are integrally formed. The guide plate 17 is located on the side close to the lock body 10. The guide plate is wrapped with plastic 16 at its end. The guide plate 17 is provided with an arc surface, which guides the lock rod.
[0049] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:
[0050] By setting the stop point plastic coating 22, the guide plate plastic coating 16 and the pawl plastic coating 20, the noise generated during the operation of internal parts can be effectively reduced, and the stop point insert 21, guide plate 17 and pawl insert 18 can be protected to a certain extent, reducing wear and increasing service life.
[0051] By providing a guide plate 17 on the pawl insert 18, and a metal part 171 on the guide plate 17, the locking pin can be smoothly guided, ensuring that the lock body 10 can smoothly enter the second position. By using plastic coating 16 on the guide plate, direct contact between the guide plate 17 and the locking pin is prevented, avoiding abnormal noise from contacting the locking pin and improving its service life. Example
[0052] An integrated two-position seat lock has multiple stepped surfaces on its mounting shaft 13. These stepped surfaces cooperate with a stop lock claw 2, a safety plate 3, a comfort plate 4, a stop insert 21, and a ratchet insert 18. The lower end of the mounting shaft 13 has a flange stepped surface that is embedded in the lock body 10. The lower surface of the flange stepped surface is flush with the lower surface of the lock body 10.
[0053] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:
[0054] Multiple stepped surfaces are provided on the mounting shaft 13, which facilitates the assembly of various components and improves the assembly efficiency of the components. By setting flange stepped surfaces, the contact area between the mounting shaft 13 and the lock body 10 is increased, so that the mounting shaft 13 can fully contact the lock body 10, ensuring its installation stability and improving the fixing effect of the mounting shaft 13.
[0055] The stop lock claw 2 is provided with a claw tip at one end, which engages with the stop insert 21. One side of the claw tip is in contact with the stop insert 21, and the length of the contact part is 7-10mm.
[0056] The unlocking handle 7 is provided with reinforcing ribs, which are evenly distributed in a grid pattern on the unlocking handle 7. The end of the unlocking handle 7 is provided with an unlocking paddle, which is integrally formed with the unlocking handle 7. A triangular reinforcing block is provided between the unlocking handle 7 and the unlocking paddle, and the reinforcing block is connected and fixed to the unlocking handle 7 and the unlocking paddle by welding.
[0057] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:
[0058] The engagement length between the claw tip and the stop insert 21 is increased by 1 / 5 to 1 / 4 compared to the traditional engagement length. This increases the meshing force area, ensures the static load strength of the stop lock claw 2 and the stop insert 21, prevents the parts from deforming or being damaged due to excessive load, and improves the service life of the stop lock claw 2 and the stop insert 21.
[0059] By setting reinforcing ribs on the unlocking handle 7, the strength of the unlocking handle 7 can be effectively improved, and the reinforcing block set between the unlocking paddle and the unlocking handle 7 can ensure the strength of the unlocking paddle.
[0060] Seat lock assembly method:
[0061] The upper and lower mounting shafts 13 are connected to the lock body 10 of the integrated structure. The comfort plate 4, safety plate 3, and stop lock claw 2 are mounted on the upper mounting shaft 13. The guide plate plastic-coated piece 16 is fixed to the ratchet pawl plastic-coated piece 20 by rivets. At the same time, it is mounted on the lower mounting shaft 13 along with the washer 19 and the stop point plastic-coated piece 22. After the cover plate 1 is covered, the two mounting shafts 13 are riveted by the equipment to make them fit tightly with the holes of the cover plate 1. The lock body 10 is fixed to the seat bracket by two bolts.
[0062] Seat lock in two locked positions:
[0063] First-position locking state: The lock body 10 is connected to the seat back. When the seat is tilted back and close to the vehicle body fixing pin, the pawl plastic 20 and the stop plastic 22 will be driven to rotate by the fixing pin. When the stop plastic 22 is engaged by the stop locking pawl 2, the pawl plastic 20 and the safety plate 3 are also engaged and locked at the same time. The handle returns to the locking state, and the indicator 8 falls back. At this time, the fixing pin is constrained between the stop plastic 22 and the pawl plastic 20, and is in the first-position angle position.
[0064] Second-position locking state: Move the unlocking handle 7. The handle drives the comfort plate 4, safety plate 3, and stop lock pawl 2 to rotate together. When it reaches a certain angle, the stop point plastic 22 is no longer blocked by the stop lock pawl 2, and the seat back can continue to tilt backward by about 5° until the vehicle body fixing pin contacts the lock body 10 and the metal cover plate 1 and is blocked. Then the pawl plastic 20 engages with the safety plate 3 to lock, the handle returns to the locking state, and the indicator 8 falls back. At this time, the fixing pin is constrained between the pawl plastic 20 and the lock body 10, and is in the second-position locking state.
[0065] 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.
[0066] 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. An integrated two-stage seat lock comprising a lock body and a cover plate, characterized in that, The lock body is provided with a pawl assembly, a ratchet assembly and an unlocking handle, one side of the unlocking handle is provided with an indicator on the lock body, the pawl assembly and the ratchet assembly are fixed on the lock body through a mounting shaft, the pawl assembly comprises a stop pawl, a safety sheet and a comfort sheet, the stop pawl, the safety sheet and the comfort sheet are arranged on the mounting shaft from outside to inside, the ratchet assembly comprises a stop point insert and a ratchet insert, the ratchet insert is located outside the stop point insert, a washer is arranged on the mounting shaft between the ratchet insert and the stop point insert, the lock body is provided with a cover plate, and the lock body and the cover plate are connected and fixed through the mounting shaft by riveting.
2. The integrated two-stage seat lock according to claim 1, characterized in that: The indicator is provided with an indicator return spring, and the two ends of the indicator return spring are connected with the indicator and the lock body respectively, and the indicator return spring provides the power for resetting the indicator; The unlocking handle is provided with an unlocking handle return spring, and the unlocking handle return spring is connected with the unlocking handle and the lock body respectively, and the unlocking handle return spring provides the power for resetting the unlocking handle; The stop pawl is provided with a stop ratchet return spring, and the stop ratchet return spring is connected with the stop pawl and the lock body respectively, and the stop ratchet return spring provides the power for resetting the stop pawl; The safety sheet is provided with a safety sheet torsional spring, and the safety sheet torsional spring is connected with the safety sheet and the lock body respectively, and the safety sheet torsional spring provides the power for resetting the safety sheet; The comfort sheet is provided with a comfort sheet return spring, and the comfort sheet return spring is connected with the comfort sheet and the lock body respectively, and the safety sheet torsional spring provides the power for resetting the safety sheet, the comfort sheet is overlapped with the unlocking handle, and the comfort sheet return spring resets the unlocking handle at the same time; The stop point insert is provided with a stop point return spring, and the stop point return spring is connected with the stop point insert and the lock body respectively, and the stop point return spring provides the power for resetting the stop point insert; The ratchet insert is provided with a ratchet return spring, and the ratchet return spring is connected with the stop point insert and the lock body respectively, and the stop point return spring provides the power for resetting the stop point insert.
3. An integrated two-stage seat lock as defined in claim 1, wherein The ratchet insert is provided with a guide sheet, the guide sheet is riveted and fixed with the ratchet insert through two rivets, the guide sheet is provided with a metal piece, the metal piece is close to the ratchet insert, the metal piece and the guide sheet are integrally arranged, the guide sheet is arranged on one side close to the lock body, the guide sheet is wrapped in the end of the guide sheet, the guide sheet is provided with a curved surface, and the curved surface guides the lock rod.
4. An integrated two-stage seat lock as defined in claim 1, wherein, The stop point insert, the guide sheet and the ratchet insert are respectively provided with stop point plastic wrapping, guide sheet plastic wrapping and ratchet plastic wrapping, the stop point insert is provided with a spring limiting hole, the spring limiting hole is in a strip shape as a whole, the spring limiting hole cooperates with the stop point return spring, and one end of the stop point return spring is hung into the spring limiting hole.
5. An integrated two-stage seat lock as defined in claim 1, wherein, The mounting shaft is provided with a plurality of step surfaces, the step surfaces are matched with the stop lock claw, the safety sheet, the comfortable sheet, the stop point insert and the pawl insert, the lower end of the mounting shaft is provided with a flange step surface, the flange step surface is embedded into the lock body, and the lower surface of the flange step surface is flush with the lower surface of the lock body.
6. An integrated two-stage seat lock as defined in claim 1, wherein, One end of the stop lock claw is provided with a claw tip, the claw tip is engaged with the stop point insert, one side of the claw tip is in close contact with the stop point insert, and the length of the close contact part is 7-10 mm.
7. An integrated two-stage seat lock as defined in claim 1, wherein, The unlocking handle is provided with reinforcing ribs, the reinforcing ribs are distributed on the unlocking handle in a grid shape, the end of the unlocking handle is provided with an unlocking tab, the unlocking tab is integrally formed with the unlocking handle, triangular reinforcing blocks are arranged between the unlocking handle and the unlocking tab, and the reinforcing blocks are connected and fixed with the unlocking handle and the unlocking tab through welding.