Headrest locking mechanism
By designing a headrest locking mechanism that combines locking wires and reset leaf springs, the problems of complex headrest locking structures and difficulty in unlocking from both sides are solved, achieving simple and efficient headrest height adjustment.
Patent Information
- Application Number
- CN202520033645.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2035-01-07
AI Technical Summary
The existing headrest locking structure is complex, making it difficult to unlock from both sides and taking up a lot of space, which affects the flexibility of adjustment.
A headrest locking mechanism was designed, including a headrest rod, a fixed bracket, a locking wire, a reset leaf spring, and an unlocking button. The headrest rod can be unlocked on both sides by sliding the locking wire and the elastic force of the reset leaf spring. The contact area between the locking wire and the fixed bracket was optimized to reduce friction.
It achieves a simple structure, small footprint, and easy operation for unlocking the double-sided headrest rods, improving the flexibility and stability of headrest adjustment.
Smart Images
Figure CN223546203U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive seat technology, and in particular to a headrest locking mechanism. Background Technology
[0002] Currently, with the rapid development of the national economy and the continuous improvement of people's living standards, the pursuit of a comfortable and convenient life has led to the increasing popularity of automobiles. People who pursue a high-quality life are increasingly looking forward to the humanized and convenient design of car functions. As the part of a car that passengers come into contact with most frequently, the car seat directly affects passenger comfort. The headrest provides good head support for passengers, and different passengers have different needs for headrest height at different times, so the headrest height adjustment function is frequently used. However, existing two-way headrests have the following drawbacks: the locking structure is relatively complex and lacks stability during subsequent use, requires a large space for installation, and usually only one side of the headrest rod can be unlocked, making the headrest adjustment inflexible. Utility Model Content
[0003] In view of the problems existing in the prior art, the present invention aims to provide a headrest locking mechanism to solve the problems of complex structure and difficulty in achieving double-sided unlocking of existing headrest locking mechanisms.
[0004] To achieve the above objectives, this utility model proposes a headrest locking mechanism, including a headrest rod and a fixed bracket. The fixed bracket is fixedly installed inside the backrest. Two legs of the headrest rod are movably inserted into the fixed bracket, and each leg has a slot along its length. The slots are symmetrically arranged on both sides. The mechanism also includes a locking wire, a reset spring, and an unlocking button. The slot openings face rearward. The locking wire slides back and forth and is confined within the fixed bracket. Both ends of the locking wire are engaged in the two slots of corresponding heights. The reset spring is arranged... The locking steel wire is located on the rear side of the middle section, and is arched backward as a whole. Its two ends are fixed to the locking steel wire. A mounting bracket is provided at the top of the arch of the reset leaf spring. The mounting bracket is limited and fixed on the fixed bracket. The unlocking button is located on the front side of the middle section of the locking steel wire. The unlocking button is installed on the fixed bracket and contacts the middle section of the locking steel wire backward. Pressing the unlocking button backward can drive the two ends of the locking steel wire to disengage from the slot, thereby unlocking the headrest rod. At the same time, the reset leaf spring is compressed and has the elastic force to drive the locking steel wire to reset.
[0005] In the above scheme: the fixed bracket is provided with an installation groove for placing the locking steel wire. The upper and lower side walls of the installation groove are provided with a number of front-to-back extending ribs. The ribs are distributed at intervals on the left and right. The locking steel wire is slidably arranged between the upper and lower ribs to avoid excessive friction and poor sliding caused by the locking steel wire contacting the entire surface of the fixed bracket.
[0006] In the above scheme: the middle part of the locking wire is first bent forward to form a first curved section, and the middle part of the first curved section is then bent backward to form a second curved section. The two ends of the reset leaf spring are welded to the two ends of the first curved section, and the rear end of the unlocking button contacts the second curved section. The design of the first curved section to provide space for the reset leaf spring and the design of the second curved section to provide space for the unlocking button makes the structure more compact and avoids occupying too much installation space.
[0007] In the above solution: the mounting bracket and the reset leaf spring are integrally formed. The mounting bracket has a forward-opening U-shaped groove and a rearward-extending abutment plate. The U-shaped groove engages forward with a pre-reserved slot on the fixed bracket, and the abutment plate abuts backward with a pre-reserved stop on the fixed bracket. The dome of the reset leaf spring is fixed to the fixed bracket from all directions by the mounting bracket, which is ingeniously designed and easy to install.
[0008] The beneficial effects of this utility model are:
[0009] Pressing the unlock button backward will disengage both ends of the locking wire from the slot, thus unlocking the headrest rod and compressing the return spring. Once the headrest height is adjusted to a suitable position, releasing the pressure on the unlock button will allow it to return to its original position under the action of its own return spring, and the locking wire will also return to its original position under the action of the return spring, thus locking the headrest rod. In summary, this invention has a simple structure, requires little installation space, and unlocks both sides of the headrest rod with a single press, making it easy to operate. Attached Figure Description
[0010] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0011] Figure 1 This is a schematic diagram of the external structure of this utility model.
[0012] Figure 2 yes Figure 1 A diagram of the back side.
[0013] Figure 3 This is a schematic diagram of the internal structure of this utility model.
[0014] Figure 4 yes Figure 3 A diagram of the back side.
[0015] Figure 5 This is a structural diagram of the fixed support. Detailed Implementation
[0016] like Figure 1As shown in Figure 5, a headrest locking mechanism mainly consists of a headrest rod 1, a fixed bracket 2, a locking wire 3, a reset leaf spring 4, and an unlocking button 5. The fixed bracket 2 is fixed inside the backrest, and the two legs of the headrest rod 1 are movably inserted into the fixed bracket 2, with slots 6 along their length direction on both sides.
[0017] The slot 6 opens backward, allowing the locking wire 3 to slide back and forth and remain confined within the fixed bracket 2. Both ends of the locking wire 3 are engaged in the two slots 6 at corresponding heights. The reset spring 4 is positioned on the rear side of the middle portion of the locking wire 3, forming an arched shape, with both ends fixed to the locking wire 3. A mounting bracket 7 is located at the apex of the arch of the reset spring 4, and the mounting bracket 7 is fixed to the fixed bracket 2. The unlocking button 5 is positioned on the front side of the middle portion of the locking wire 3, mounted on the fixed bracket 2, and contacts the middle portion of the locking wire 3 from the rear.
[0018] Pressing the unlock button 5 backward will drive the two ends of the locking wire 3 to disengage from the slot 6, thereby unlocking the headrest rod 1. At the same time, the reset leaf spring 4 will be compressed and have the elastic force to drive the locking wire 3 to reset.
[0019] Ideally, the fixed bracket 2 is provided with an installation groove 21 for placing the locking wire 3. The upper and lower side walls of the installation groove 21 are provided with several front-to-back extending ribs 211, and the ribs 211 are distributed at intervals on the left and right. The locking wire 3 is slidably disposed between the upper and lower ribs 211, so as to avoid excessive friction and poor sliding caused by the locking wire 3 contacting the entire surface of the fixed bracket 2.
[0020] Ideally, the middle of the locking wire 3 should be bent forward to form a first curved section, and the middle of the first curved section should be bent backward to form a second curved section. The two ends of the reset spring 4 should be welded to the two ends of the first curved section, and the rear end of the unlocking button 5 should contact the second curved section. Designing the first curved section to provide space for the reset spring 4 and the second curved section to provide space for the unlocking button 5 makes the structure more compact and avoids occupying too much installation space.
[0021] Ideally, the mounting bracket 7 and the reset leaf spring 4 are integrally formed. The mounting bracket 7 has a U-shaped groove 71 with an opening facing forward and a rearward extending abutment plate 72. The U-shaped groove 71 engages forward with the pre-reserved seat on the fixed bracket 2, and the abutment plate 72 abuts backward with the pre-reserved stop point on the fixed bracket 2. The dome of the reset leaf spring 4 is fixed to the fixed bracket 2 from all directions by the mounting bracket 7. The design is ingenious and the installation is convenient.
Claims
1. A headrest locking mechanism, comprising a headrest rod (1) and a fixed bracket (2), wherein the fixed bracket (2) is fixedly disposed inside the backrest, and two legs of the headrest rod (1) are movably inserted into the fixed bracket (2), and the two legs are provided with slots (6) along their length direction, the slots (6) being symmetrically arranged on both sides, characterized in that: It also includes a locking wire (3), a reset leaf spring (4), and an unlocking button (5). The slot (6) opens to the rear. The locking wire (3) slides back and forth and is confined within the fixed bracket (2). The two ends of the locking wire (3) are inserted into the two slots (6) of corresponding height. The reset leaf spring (4) is arranged on the rear side of the middle part of the locking wire (3) and is arched backward as a whole. Its two ends are fixed to the locking wire (3). A mounting bracket (7) is provided at the arched top of the reset leaf spring (4). The mounting bracket (7) is fixed on the fixed bracket (2). The unlocking button (5) is located on the front side of the middle part of the locking wire (3). The unlocking button (5) is installed on the fixed bracket (2) and contacts the middle part of the locking wire (3) backward. Pressing the unlocking button (5) backward can drive the two ends of the locking wire (3) to disengage from the slot (6), thereby unlocking the headrest rod (1). At the same time, the reset leaf spring (4) is compressed and has the elastic force to drive the locking wire (3) to reset.
2. The headrest locking mechanism according to claim 1, characterized in that: The fixed bracket (2) is provided with an installation groove (21) for placing the locking wire (3). The upper and lower side walls of the installation groove (21) are provided with a number of front-to-back extending ribs (211). The ribs (211) are distributed at intervals on the left and right. The locking wire (3) is slidably disposed between the upper and lower ribs (211).
3. The headrest locking mechanism according to claim 1, characterized in that: The middle part of the locking wire (3) is first bent forward to form a first curved section, and the middle part of the first curved section is then bent backward to form a second curved section. The two ends of the reset leaf spring (4) are welded to the two ends of the first curved section, and the rear end of the unlocking button (5) is in contact with the second curved section.
4. The headrest locking mechanism according to claim 1, characterized in that: The mounting bracket (7) is integrally formed with the reset leaf spring (4). The mounting bracket (7) is provided with a U-shaped groove (71) opening forward and an abutment plate (72) extending backward. The U-shaped groove (71) is engaged forward on the pre-reserved seat of the fixed bracket (2), and the abutment plate (72) abuts backward on the pre-reserved stop point of the fixed bracket (2).