Manual slide rail unlocking mechanism

Abstract

The utility model provides a manual sliding rail unlocking mechanism, and relates to the technical field of automobile seat sliding rails, the manual sliding rail unlocking mechanism comprises an unlocking rod, the right end of the unlocking rod is provided with a first supporting piece used for being fixedly welded to a right upper rail, and the left end of the unlocking rod is provided with a second supporting piece used for being fixedly welded to a left upper rail; a first rotating assembly used for being rotationally connected with the first supporting piece is arranged at the right end of the unlocking rod, a second rotating assembly used for being rotationally connected with the second supporting piece is arranged at the left end of the unlocking rod, a first extrusion assembly is arranged at the right end of the unlocking rod, and a torsional spring is arranged between the first extrusion assembly and the first supporting piece. According to the middle support, the first supporting piece and the right upper rail are welded, the second supporting piece and the left upper rail are welded, compared with traditional bolt connection, welding is firmer and more stable, the situation that bolts are loosened to affect an unlocking mechanism when a vehicle jolts can be avoided, an existing middle support is replaced with the first supporting piece and the second supporting piece, and the middle support is convenient to use. And under the same condition, the structure is simpler, the size is smaller, and the material cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of automotive seat slide rail technology, and more specifically, to a manual slide rail unlocking mechanism. Background Technology

[0002] Car seat rails are an important component of car seats, typically consisting of an upper rail, a lower rail, a locking mechanism, and an unlocking mechanism. The upper rail slides on the lower rail, and the locking mechanism is located between the upper and lower rails and engages with them. When the unlocking lever of the unlocking mechanism presses against the locking pin of the locking mechanism, the locking tooth plate at the bottom of the locking pin disengages from the limiting groove on the lower rail, allowing the upper rail to move freely on the lower rail.

[0003] The central bracket of the manual slide rail unlocking mechanism is an important component of the car seat slide rail system. It is usually located at the bottom of the seat and is used to connect the unlocking rod and the upper rail. It also supports and fixes the unlocking rod, allowing it to rotate stably and realize the unlocking and locking functions of the seat.

[0004] Currently, in common seat unlocking mechanisms, like Figure 1 The middle bracket a shown generally suffers from an excessively large size. Moreover, its assembly largely relies on bolt fastening, which makes the bolts prone to loosening when the vehicle is traveling on bumpy roads, thus affecting the stability of the unlocking mechanism. In addition, the larger size means that more materials are required, which increases the overall cost. Summary of the Invention

[0005] The purpose of this application is to provide a manual sliding rail unlocking mechanism, which can solve the technical problems of existing seat unlocking mechanisms, such as the large size of the central bracket, the use of bolts for fastening, the easy loosening of bolts when the car is bumpy, affecting stability, and the increased material cost due to the large size.

[0006] This application provides a manual slide rail unlocking mechanism, including an unlocking rod. The right end of the unlocking rod is provided with a first support plate for welding and fixing to the upper right rail, and the left end of the unlocking rod is provided with a second support plate for welding and fixing to the upper left rail. The right end of the unlocking rod is provided with a first rotating assembly for rotatably connecting to the first support plate, and the left end of the unlocking rod is provided with a second rotating assembly for rotatably connecting to the second support plate. The right end of the unlocking rod is provided with a first pressing assembly, and a torsion spring is provided between the first pressing assembly and the first support plate. The left end of the unlocking rod is provided with a second pressing assembly.

[0007] Furthermore, both the first rotating assembly and the second rotating assembly include a snap-fit ​​member and a connecting cylinder. The snap-fit ​​member is rotatably connected to the connecting cylinder. Both the first support plate and the second support plate are provided with snap-fit ​​holes adapted to the snap-fit ​​member. The snap-fit ​​member is snapped into the snap-fit ​​hole. The end of the unlocking rod moves through the connecting cylinder and the snap-fit ​​member.

[0008] Furthermore, the snap-fit ​​component is provided with a first limiting protrusion ring, and one end of the connecting cylinder is provided with a second limiting protrusion ring inside. The first limiting protrusion ring is driven to be disposed inside the connecting cylinder and abuts against the second limiting protrusion ring.

[0009] Furthermore, both the first extrusion assembly and the second extrusion assembly include a linkage component, an extrusion rod, and an extrusion sleeve. One end of the linkage component is fixedly connected to the unlocking rod, one end of the extrusion rod is fixedly disposed on the end of the linkage component away from the unlocking rod, and the extrusion sleeve is movably sleeved on the extrusion rod.

[0010] Furthermore, the torsion spring is sleeved on the connecting cylinder, one end of the torsion spring is connected to the linkage member, and the other end of the torsion spring is connected to the first support plate.

[0011] Furthermore, a reinforcing rib is fixed at the connection between the linkage and the unlocking rod.

[0012] Furthermore, the end of the linkage of the second compression assembly away from the unlocking lever is fixed with a clamping piece for abutting against the bottom of the seat.

[0013] The beneficial effects of this utility model are:

[0014] The first support plate of this utility model is welded to the upper right rail, and the second support plate is welded to the upper left rail. Compared with the bolt connection method used in the prior art, welding can provide a more robust and stable connection, effectively avoiding the impact of bolt loosening on the stability of the unlocking mechanism during vehicle travel and bumpy conditions. This enhances the reliability of the unlocking mechanism in complex usage environments. By replacing the middle bracket in the prior art with the first and second support plates, the structure is simpler and smaller under the same applicable conditions, effectively avoiding the increase in material costs caused by a larger volume. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the middle support structure of the manual slide rail unlocking mechanism in the prior art of this application;

[0017] Figure 2 These are schematic diagrams of structures in some embodiments of this application;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0020] Figure 5 This is a structural breakdown diagram of some embodiments of this application;

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Unlocking rod; 2. First support plate; 3. Second support plate; 4. First rotating assembly; 41. Snap-fit ​​component; 411. First limiting protrusion ring; 42. Connecting cylinder; 421. Second limiting protrusion ring; 5. Second rotating assembly; 6. First pressing assembly; 61. Linkage component; 62. Pressing rod; 63. Pressing sleeve; 7. Torsion spring; 8. Second pressing assembly; 9. Armpit rib; 10. Clamping plate; 11. Upper right rail; 12. Upper left rail; 13. Locking pin. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific implementation examples:

[0030] like Figure 2-5As shown, this application provides a manual slide rail unlocking mechanism, including an unlocking rod 1. The right end of the unlocking rod 1 has a first support plate 2 for welding and fixing to the upper right rail 11, and the left end of the unlocking rod 1 has a second support plate 3 for welding and fixing to the upper left rail 12. The right end of the unlocking rod 1 has a first rotating assembly 4 for rotatably connecting to the first support plate 2, and the left end of the unlocking rod 1 has a second rotating assembly 5 for rotatably connecting to the second support plate 3. The right end of the unlocking rod 1 has a first pressing assembly 6, and a torsion spring 7 is provided between the first pressing assembly 6 and the first support plate 2. The left end of the unlocking rod 1 has a second pressing assembly 8. In this embodiment, the length, width, and height of the first support plate 2 are... The length, width, and height of the second support plate 3 are 25mm, 2.5mm, and 31mm respectively. The first support plate 2 is welded to the upper right rail 11, and the second support plate 3 is welded to the upper left rail 12. Compared with the bolt connection method in the prior art, welding can provide a more robust and stable connection, effectively avoiding the impact of bolt loosening on the stability of the unlocking mechanism during vehicle bumps, and enhancing the reliability of the unlocking mechanism in complex usage environments. By replacing the middle bracket in the prior art with the first support plate 2 and the second support plate 3, under the same applicable conditions, the structure is simple and the volume is smaller, effectively avoiding the increase in material cost caused by the large volume.

[0031] like Figure 3-5 As shown, both the first rotating assembly 4 and the second rotating assembly 5 include a snap-fit ​​member 41 and a connecting cylinder 42. The snap-fit ​​member 41 is rotatably connected to the connecting cylinder 42. Both the first support plate 2 and the second support plate 3 are provided with snap-fit ​​holes adapted to the snap-fit ​​member 41. The snap-fit ​​member 41 is snapped into the snap-fit ​​hole. The end of the unlocking rod 1 moves through the connecting cylinder 42 and the snap-fit ​​member 41. The matching design of the snap-fit ​​member 41 and the snap-fit ​​hole makes it simple and convenient to install the first rotating assembly 4 onto the first support plate 2 and the second rotating assembly 5 onto the second support plate 3, effectively improving assembly efficiency. The rotatable connection between the snap-fit ​​member 41 and the connecting cylinder 42 provides a smooth rotational foundation for the unlocking rod 1. When performing the unlocking operation, the operator can easily rotate the unlocking rod 1 with less force required.

[0032] like Figure 3-5 As shown, the snap-fit ​​component 41 is provided with a first limiting protrusion 411, and one end of the connecting cylinder 42 is provided with a second limiting protrusion 421 inside. The first limiting protrusion 411 is driven to be disposed inside the connecting cylinder 42 and abuts against the second limiting protrusion 421. During vehicle operation, bumps, vibrations and other situations may cause the unlocking mechanism to be subjected to unexpected external forces. The limiting structure can prevent the connecting cylinder 42 from moving radially along the connecting cylinder 42 under these external forces, ensuring the stability of the connection between the snap-fit ​​component 41 and the connecting cylinder 42 and avoiding structural damage.

[0033] like Figure 3-5As shown, both the first pressing assembly 6 and the second pressing assembly 8 include a linkage 61, a pressing rod 62, and a pressing sleeve 63. One end of the linkage 61 is fixedly connected to the unlocking rod 1, and one end of the pressing rod 62 is fixedly mounted on the end of the linkage 61 away from the unlocking rod 1. The pressing sleeve 63 is movably sleeved on the pressing rod 62. When an external force is applied to the unlocking rod 1 to unlock the seat, since one end of the linkage 61 is fixedly connected to the unlocking rod 1, the rotation of the unlocking rod 1 is directly transmitted to the linkage 61, causing the linkage 61 to move together. The pressing rod 62 moves along with the linkage 61. During operation, a compressive force is applied to the locking mechanism component associated with the compressive rod 62. In the locking structure of the seat slide rail, the compressive action of the compressive rod 62 can push the locking component (such as the locking pin 13, which drives the locking tooth plate) to disengage it from the limiting groove on the slide rail, thereby unlocking the seat slide rail and allowing the seat to move freely on the slide rail to adjust its position. During the movement of the compressive rod 62, the compressive sleeve 63 can play a protective role, reducing the wear of the compressive rod 62 and extending the service life of the compressive rod 62 and the entire compressive assembly.

[0034] like Figure 3 and Figure 5 As shown, the torsion spring 7 is sleeved on the connecting cylinder 42. One end of the torsion spring 7 is connected to the linkage 61, and the other end of the torsion spring 7 is connected to the first support plate 2. During the unlocking and resetting process, the torsion spring 7 provides a stable and continuous force to the unlocking rod 1 and the linkage 61. Sleeving the torsion spring 7 on the connecting cylinder 42 cleverly utilizes the internal space of the mechanism, making the overall structure more compact and reducing the overall volume.

[0035] like Figure 3-5 As shown, a reinforcing rib 9 is fixed at the connection between the linkage 61 and the unlocking rod 1. The reinforcing rib 9 is welded to the connection between the linkage 61 and the unlocking rod 1 to enhance the structural strength of the connection between the linkage 61 and the unlocking rod 1.

[0036] like Figure 4 and Figure 5 As shown, the end of the linkage 61 of the second compression assembly 8 away from the unlocking rod 1 is fixed with a clamping piece 10 for abutting against the bottom of the seat. The presence of the clamping piece 10 effectively protects the bottom of the seat. During the adjustment of the seat position, the clamping piece 10 evenly distributes the force from the linkage 61, avoiding damage such as dents or deformation of the bottom of the seat due to excessive local force.

[0037] Working principle:

[0038] During installation, the first support piece 2 is welded to the upper right rail 11, and the second support piece 3 is welded to the upper left rail 12. The pressing rod 62 is positioned above the three-position locking pin 13 of the locking mechanism. When unlocking, the unlocking rod 1 is operated, which rotates and drives the linkage 61. The linkage 61 drives the pressing rod 62 to press the locking pin 13, causing the locking tooth plate at the bottom of the locking pin 13 to disengage from the lower rail limit slot and unlock the seat slide rail. The torsion spring 7 stores elastic potential energy during unlocking and releases it after the operation is completed, causing the linkage 61 of the first pressing assembly 6 and the unlocking rod 1 to reset. When the unlocking rod 1 resets, it drives the linkage 61 of the second pressing assembly 8 to reset.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A manual slide rail unlocking mechanism, characterized in that: The device includes an unlocking rod. The right end of the unlocking rod is provided with a first support plate for welding and fixing to the upper right rail. The left end of the unlocking rod is provided with a second support plate for welding and fixing to the upper left rail. The right end of the unlocking rod is provided with a first rotating assembly for rotatably connecting to the first support plate. The left end of the unlocking rod is provided with a second rotating assembly for rotatably connecting to the second support plate. The right end of the unlocking rod is provided with a first pressing assembly. A torsion spring is provided between the first pressing assembly and the first support plate. The left end of the unlocking rod is provided with a second pressing assembly.

2. A manual slide unlocking mechanism according to claim 1, wherein: Both the first rotating assembly and the second rotating assembly include a snap-fit ​​member and a connecting cylinder. The snap-fit ​​member is rotatably connected to the connecting cylinder. Both the first support plate and the second support plate are provided with snap-fit ​​holes adapted to the snap-fit ​​member. The snap-fit ​​member is snapped into the snap-fit ​​hole. The end of the unlocking rod movably passes through the connecting cylinder and the snap-fit ​​member.

3. A manual slide unlocking mechanism according to claim 2, wherein: The snap-fit ​​component is provided with a first limiting protrusion ring, and one end of the connecting cylinder is provided with a second limiting protrusion ring inside. The first limiting protrusion ring is driven to be disposed inside the connecting cylinder and abuts against the second limiting protrusion ring.

4. A manual slide unlocking mechanism according to claim 3, wherein: Both the first extrusion assembly and the second extrusion assembly include a linkage, an extrusion rod, and an extrusion sleeve. One end of the linkage is fixedly connected to the unlocking rod, one end of the extrusion rod is fixed to the end of the linkage away from the unlocking rod, and the extrusion sleeve is movably sleeved on the extrusion rod.

5. A manual slide rail unlocking mechanism according to claim 4, characterized in that: The torsion spring is sleeved on the connecting cylinder, one end of the torsion spring is connected to the linkage member, and the other end of the torsion spring is connected to the first support plate.

6. The manual slide rail unlocking mechanism according to claim 4, characterized in that: The connection between the linkage and the unlocking rod is fixed with a reinforcing rib.

7. The manual slide rail unlocking mechanism according to claim 4, characterized in that: The second compression assembly has a clamping piece fixed at the end of the linkage member away from the unlocking lever for abutting against the bottom of the seat.

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