Automobile seat headrest turnover mechanism

Abstract

The invention discloses an automobile seat headrest turnover mechanism which comprises a backrest insertion rod, a supporting mechanism, a limiting mechanism, an adjusting mechanism and a fixing mechanism, the backrest insertion rod is arranged in a front-back structure, the supporting mechanism is arranged above the backrest insertion rod, the limiting mechanism is arranged on the supporting mechanism, and the adjusting mechanism is arranged on the backrest insertion rod. The adjusting mechanism is arranged on the supporting mechanism, and the fixing mechanism is arranged on the adjusting mechanism. According to the scheme, the disassembly difficulty of the headrest turnover mechanism is greatly reduced, the structure is easy to understand, disassembly and assembly are convenient and fast, replacement, replacement and maintenance of internal components are facilitated, and the adjustment flexibility of the headrest is also optimized.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle seats, in particular to a turning mechanism for a headrest of an automobile seat. Background Art

[0002] A car headrest is a device installed on a car seat to support the passenger's head. During driving, the car headrest provides passengers with additional support and stability, reduces body shaking, and reduces the risk of injury.

[0003] The flip mechanism of existing car seat headrests is generally not very flexible during actual use, and its internal structure is very difficult to disassemble. Therefore, if the internal parts are worn or rusted, it will make adjusting the headrest more difficult, and subsequent maintenance will also be very difficult, adding trouble to users.

[0004] For this, a solution is needed. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present invention provides a vehicle seat headrest flipping mechanism to solve the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A vehicle seat headrest flip mechanism, characterized in that it comprises a backrest insertion rod, a support mechanism, a limiting mechanism, an adjustment mechanism, and a fixing mechanism, wherein the backrest insertion rod is arranged in a front-to-back structure, the support mechanism is arranged above the backrest insertion rod, the limiting mechanism is arranged on the support mechanism, the adjustment mechanism is arranged on the support mechanism, and the fixing mechanism is arranged on the adjustment mechanism;

[0010] The support mechanism includes a support block, a plurality of teeth, a slot, a plurality of fixing bars, a positive magnetic plate, a support column, a plurality of positive magnetic strips, a plurality of plug-ins, an extension column and a negative magnetic plate. The support block is arranged at the top of each of the backrest plug-in rods, and a plurality of the teeth are evenly arranged on the top of each of the support blocks. The slot is arranged on the opposite sides of the two support blocks, and a plurality of the fixing bars are arranged on the inner wall of the slot in a cross-shaped structure. The positive magnetic plate is arranged at the inner end of each of the slots, and the support column is arranged between the two slots. A plurality of the positive magnetic strips are arranged in a cross-shaped structure around the middle of the support column, and a plurality of the plug-ins are evenly arranged around the front and rear ends of the support column. The extension column is arranged between a plurality of the plug-ins on each side, and the negative magnetic plate is arranged at the outer end of each extension column.

[0011] Preferably, the support block is a semicircular arch rectangular combination structure, a plurality of the tooth grooves are distributed on the semicircular arch structure on the top of the support block, the slot is a circular structure, the fixing bar is an arc-shaped structure, the insert plate is an arc-shaped structure and is complementary to the position of each fixing bar, the support block and the fixing bar are integrally formed, and the support column, insert plate and extension column are integrally formed.

[0012] Preferably, the limiting mechanism includes a limiting ring, a telescopic groove, a spring plate, a spring and a limiting block. The limiting ring is wrapped around the support column in a front-to-back structure. The telescopic groove is arranged at one end of each limiting ring away from the other opposite limiting ring. The spring plate is arranged inside the telescopic groove in a left-right structure. The spring is arranged between the two spring plates. The limiting block is arranged on the outer end of the spring plate at the outer end inside the telescopic groove.

[0013] Preferably, the two limiting rings are respectively located at the front and rear ends of the positive magnetic strip on the support column, the telescopic slot is located at the left end of the support column, and the limiting block has an arc-shaped structure.

[0014] Preferably, the adjustment mechanism includes a cylindrical bearing, a plurality of negative magnetic strips, a rotating drum, a fixing seat, an adjustment slot, a control panel, a plurality of strong springs, a headrest mounting plate and a mounting hole. The cylindrical bearing is wrapped and arranged on the support column. The negative magnetic strip corresponds to the position of each positive magnetic strip. The rotating drum is wrapped and arranged on the cylindrical bearing. The fixing seat is arranged on the top of the rotating drum in a front-to-back structure. The adjustment slot is arranged inside each fixing seat. The control panel is arranged at the bottom inside the adjustment slot. A plurality of strong springs are equidistantly arranged on the top of the control panel and fixedly connected to the fixing seat. The headrest mounting plate is arranged on the top of each fixing seat. The mounting hole is arranged on each mounting plate.

[0015] Preferably, the outer ring of the cylindrical bearing is fixedly connected to the rotating drum, the fixing seat is an arc-shaped structure, the adjustment groove is a rectangular structure, and the control plate is a rectangular structure and its area is consistent with the area of ​​the bottom inside the adjustment groove.

[0016] Preferably, the rotating drum, the fixing seat and the headrest mounting plate are integrally formed.

[0017] Preferably, an indexing plate is provided between the two control plates that are opposed to each other in the front and rear directions. The indexing plate is in an arc-shaped structure, and the two control plates and the indexing plate are formed as one piece.

[0018] Preferably, the fixing mechanism includes a connecting plate, an extension plate, a pointing plate and a rack, the connecting plate is arranged at one end of each control plate facing the adjacent support block, the extension plate is arranged at the outer end of the connecting plate, the pointing plate is arranged at the outer end of the extension plate, and the rack is arranged at the bottom of the pointing plate.

[0019] Preferably, the connecting plate is an L-shaped structure, the extension plate is a rectangular structure, the pointing plate is a rectangular structure and the width of the pointing plate is smaller than the width of the extension plate, the length of the rack is consistent with the length of the pointing plate and the length of the tooth groove, and the control plate, connecting plate, extension plate, pointing plate and rack are formed as one piece.

[0020] (3) Beneficial effects

[0021] The present invention provides a vehicle seat headrest flip mechanism, which has the following beneficial effects:

[0022] 1. The support structure of this solution uses two support blocks and a support column to cooperate with the complementary relationship between the fixing bar and the plug-in plate, so that the support column is inserted into the slot and assembled with the two support blocks, thereby realizing convenient disassembly and assembly of this part. In addition, the force between the positive magnetic plate and the negative magnetic plate can make the assembly stable and easy to disassemble and assemble.

[0023] 2. The limiting mechanism uses two protruding limiting blocks to secure the two limiting rings between them. These limiting rings then limit the inner ring of the cylindrical bearing, allowing the structure outside the outer ring of the cylindrical bearing to rotate smoothly. The limiting blocks can be pressed into the expansion slot to push the limiting rings outward, making assembly and disassembly quick and easy, saving time and effort.

[0024] 3. The adjustment mechanism uses the negative magnetic strips on the inner periphery of the cylindrical bearing to attract the positive magnetic strips on the support column, which can further enhance the fixing efficiency of the inner ring of the cylindrical bearing between the two limit rings. The annular structure also facilitates disassembly and assembly. The fixed connection between the rotating drum and the cylindrical bearing allows them, including the components on the rotating drum, to be removed together, which is convenient and quick. The headrest is installed through the headrest mounting plate and the mounting holes. After installation, you can extend your fingers to the bottom of the control panel between the headrest and the rotating drum, apply a little force and lift it upward. By squeezing the strong spring, the fixing mechanism is lifted upward to facilitate flexible adjustment of the headrest's tilt angle. The arc-shaped structure of the control panel can well accommodate your fingers, making full use of the space.

[0025] 4. The fixing mechanism as a whole is driven by the control panel to rise and fall, which can more quickly and smoothly disengage from the tooth groove or insert into the tooth groove at the required position. The integrated design can improve the stability when fixing the headrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the left structure of the present invention after the adjustment mechanism and the fixing mechanism are disassembled;

[0028] Figure 3 This is a schematic diagram of the support mechanism structure of the present invention;

[0029] Figure 4 Schematic diagram of the structure of the limiting mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the present invention after zooming in;

[0031] Figure 6 This is a schematic diagram of the structure of the cylindrical bearing of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0033] Figure 8 This is a schematic diagram of the detailed internal structure of the fixing base of the present invention;

[0034] Figure 9 It is a schematic diagram of the conductive plate and heat dissipation fin structure of the present invention.

[0035] In the figure, 1-backrest plug rod; 2-support mechanism; 21-support block; 22-several tooth grooves; 23-slot; 24-several fixing strips; 25-positive magnetic plate; 26-support column; 27-several positive magnetic strips; 28-several plug plates; 29-extension column; 210-negative magnetic plate; 3-limiting mechanism; 31-limiting ring; 32-telescopic slot; 33-spring plate; 34-spring; 35-limiting block; 4-adjusting mechanism; 41-cylinder bearing; 42-several negative magnetic strips; 43-rotating drum; 44-fixing seat; 45-adjusting slot; 46-control board; 461-indicator board; 47-several strong springs; 48-headrest mounting plate; 49-mounting hole; 5-fixing mechanism; 51-connecting plate; 52-extension plate; 53-pointing plate; 54-rack. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1:

[0038] See also Figure 1-9The embodiment of the present invention provides a technical solution to achieve this: it includes a backrest insertion rod 1, a supporting mechanism 2, a limiting mechanism 3, an adjusting mechanism 4 and a fixing mechanism 5. The backrest insertion rod 1 is arranged in a front-to-back structure, the supporting mechanism 2 is arranged above the backrest insertion rod 1, the limiting mechanism 3 is arranged on the supporting mechanism 2, the adjusting mechanism 4 is arranged on the supporting mechanism 2, and the fixing mechanism 5 is arranged on the adjusting mechanism 4.

[0039] The support mechanism 2 includes a support block 21, a plurality of tooth grooves 22, a slot 23, a plurality of fixing bars 24, a positive magnetic plate 25, a support column 26, a plurality of positive magnetic strips 27, a plurality of plug plates 28, an extension column 29 and a negative magnetic plate 210. The support block 21 is arranged at the top of each backrest plug rod 1, a plurality of tooth grooves 22 are evenly arranged on the top of each support block 21, the slot 23 is arranged on the opposite sides of the two support blocks 21, a plurality of fixing bars 24 are arranged in a cross-shaped structure on the inner wall of the slot 23, the positive magnetic plate 25 is arranged at the inner end of each slot 23, the support column 26 is arranged between the two slots 23, a plurality of positive magnetic strips 27 are arranged in a cross-shaped structure around the middle of the support column 26, a plurality of plug plates 28 are evenly arranged around the front and rear ends of the support column 26, the extension column 29 is arranged between the plurality of plug plates 28 on each side, and the negative magnetic plate 210 is arranged at the outer end of each extension column 29.

[0040] The support block 21 has a semicircular arch rectangular combination structure, a plurality of tooth grooves 22 are distributed on the semicircular arch structure at the top of the support block 21, the slot 23 has a circular structure, the fixing bar 24 has an arc structure, the insert plate 28 has an arc structure and is complementary to the position of each fixing bar 24, the support block 21 and the fixing bar 24 are integrally formed, and the support column 26, the insert plate 28 and the extension column 29 are integrally formed.

[0041] Analysis of the above content: The support structure 2 uses two support blocks 21 and a support column 26 to cooperate with the complementary relationship between the fixing bar 24 and the plug plate 28, so that the support column 26 is inserted into the slot 23 and assembled with the two support blocks 21, thereby realizing convenient disassembly and assembly of this part, and the force between the positive magnetic plate 25 and the negative magnetic plate 210 can make the assembly stable and convenient for disassembly and assembly.

[0042] Example 2:

[0043] See also Figure 1-9 , an embodiment of the present invention provides a technical solution to achieve this: the limiting mechanism 3 includes a limiting ring 31, a telescopic groove 32, a spring plate 33, a spring 34 and a limiting block 35, the limiting ring 31 is wrapped around the support column 26 in a front-to-back structure, the telescopic groove 32 is arranged at one end of each limiting ring 31 away from the other opposite limiting ring 31, the spring plate 33 is arranged inside the telescopic groove 32 in a left-right structure, the spring 34 is arranged between the two spring plates 33, and the limiting block 35 is arranged on the outer end of the spring plate 33 at the outer end inside the telescopic groove 32.

[0044] The two limiting rings 31 are respectively located at the front and rear ends of the positive magnetic strip 27 on the support column 26 , the telescopic slot 32 is located at the left end of the support column 26 , and the limiting block 35 is an arc-shaped structure.

[0045] Analyzing the above content: The limiting mechanism 3 uses two protruding limiting blocks 35 to secure the two limiting rings 31 between them. These limiting rings 31 then limit the inner ring of the cylindrical bearing 41, allowing the structure outside the outer ring of the cylindrical bearing 41 to rotate smoothly. By pressing the limiting blocks 35 into the expansion slots 32, the limiting rings 31 can be pushed outward, making assembly and disassembly quick and easy, saving time and effort.

[0046] Example 3:

[0047] See also Figure 1-9 , an embodiment of the present invention provides a technical solution to achieve this: the adjustment mechanism 4 includes a cylindrical bearing 41, a plurality of negative magnetic strips 42, a rotating drum 43, a fixing seat 44, an adjustment slot 45, a control board 46, a plurality of strong springs 47, a headrest mounting plate 48 and a mounting hole 49, the cylindrical bearing 41 is wrapped and arranged on the support column 26, the negative magnetic strip 42 is arranged corresponding to the position of each positive magnetic strip 27, the rotating drum 43 is wrapped and arranged on the cylindrical bearing 41, the fixing seat 44 is arranged on the top of the rotating drum 43 in a front-to-back structure, the adjustment slot 45 is arranged inside each fixing seat 44, the control board 46 is arranged at the bottom inside the adjustment slot 45, a plurality of strong springs 47 are equidistantly arranged on the top of the control board 46 and fixedly connected to the fixing seat 44, the headrest mounting plate 48 is arranged on the top of each fixing seat 44, and the mounting hole 49 is provided on each mounting plate 48.

[0048] The outer ring of the cylindrical bearing 41 is fixedly connected to the rotating cylinder 43. The fixing seat 44 has an arc-shaped structure, the adjustment slot 45 has a rectangular structure, and the control plate 46 has a rectangular structure and its area is consistent with the bottom area of ​​the adjustment slot 45. The rotating cylinder 43, fixing seat 44 and headrest mounting plate 48 are integrally formed.

[0049] An accusation board 461 is provided between the two front and rear opposing control boards 46 . The accusation board 461 is in an arc-shaped structure. The two control boards 46 and the accusation board 461 are integrally formed.

[0050] Analysis of the above content: Adjustment mechanism 4 attracts the positive magnetic strip 27 on support column 26 via the negative magnetic strip 42 on the inner periphery of cylindrical bearing 41, further enhancing the inner ring's fixation efficiency between cylindrical bearing 41 and two retaining rings 31. Its annular structure also facilitates assembly and disassembly. The fixed connection between rotating drum 43 and cylindrical bearing 41 allows for quick and easy removal of components, including those on rotating drum 43. The headrest is installed via headrest mounting plate 48 and mounting hole 49. After installation, a finger can be placed at the bottom of the control panel 461 between the headrest and rotating drum 43. Applying a slight force and lifting upwards, the strong spring 47 can be squeezed to lift the fixing mechanism 5 upward, allowing for flexible adjustment of the headrest's tilt angle. The curved structure of control panel 461 accommodates fingers well, making full use of the space.

[0051] Example 4:

[0052] See also Figure 1-9 , an embodiment of the present invention provides a technical solution to achieve this: the fixing mechanism 5 includes a connecting plate 51, an extension plate 52, a pointing plate 53 and a rack 54, the connecting plate 51 is arranged at one end of each control plate 46 facing the adjacent support block 21, the extension plate 52 is arranged at the outer end of the connecting plate 51, the pointing plate 53 is arranged at the outer end of the extension plate 52, and the rack 54 is arranged at the bottom of the pointing plate 53.

[0053] The connecting plate 51 has an L-shaped structure, the extension plate 52 has a rectangular structure, the pointing plate 53 has a rectangular structure and the width of the pointing plate 53 is smaller than the width of the extension plate 52, the length of the rack 54 is consistent with the length of the pointing plate 53 and the length of the tooth groove 22, and the control plate 46, the connecting plate 51, the extension plate 52, the pointing plate 53 and the rack 54 are formed as one piece.

[0054] Analysis of the above content: The fixing mechanism 5 as a whole is driven to rise and fall through the control board 46, and can be more quickly and smoothly disengaged from the tooth groove 22 or inserted into the tooth groove 22 at the required position. The integrated design can improve the stability when fixing the headrest.

[0055] Furthermore, the innovative features of this solution are described.

[0056] Innovative design of support mechanism 2

[0057] The support block 21 is a semicircular rectangular structure with several tooth grooves 22 arranged on the top of the semicircular arch. Circular slots 23 are located on the opposing sides of the two support blocks 21. The inner walls of the slots 23 are arranged with several curved fixing bars 24 in a cross-shaped configuration, with positive magnetic plates 25 mounted on the inner ends. A support column 26 is inserted into the slots 23 at both ends. Its front and rear ends are evenly surrounded by several curved inserts 28, which complement the fixing bars 24. An extension column 29 is located between each insert 28, with negative magnetic plates 210 mounted on the outer ends. The support block 21 and fixing bars 24 are integrally formed, and the support column 26, insert 28, and extension column 29 are integrally formed. The complementary structure of the fixing bars 24 and insert 28 allows the support column 26 to be quickly positioned when inserted into the slots 23. The magnetic interaction between the positive and negative magnetic plates 25 and 210 enhances assembly stability. Magnetic attraction also facilitates disassembly, eliminating the need for additional tools and significantly reducing assembly and disassembly.

[0058] Innovative design of limit mechanism 3

[0059] Two limiting rings 31 are wrapped around the support column 26 in a front-to-back structure, located at the front and rear ends of the positive magnetic strip 27, respectively. Each limiting ring 31 has a telescopic slot 32 at the end away from the other limiting ring 31. Spring plates 33 are arranged on the left and right sides of the inner portion, with a spring 34 installed between the two spring plates 33. An arc-shaped limiting block 35 is provided at the outer end of the outer spring plate 33, and the telescopic slot 32 is located at the left end of the support column 26. The protruding structures of the two limiting blocks 35 secure the limiting ring 31 to the support column 26, limiting the inner ring of the cylindrical bearing 41 and ensuring smooth rotation of the outer ring of the cylindrical bearing 41 and the external structure. Pressing the limiting block 35 to retract it into the telescopic slot 32 allows the limiting ring 31 to be easily pushed out, enabling quick assembly and disassembly. The elastic force of the spring 34 automatically resets the limiting block 35, ensuring stable positioning.

[0060] Innovative design of adjustment mechanism 4

[0061] A cylindrical bearing 41 is wrapped around the support column 26. Several negative magnetic strips 42 are located on the inner ring, corresponding to the cross-shaped positive magnetic strips 27 on the support column 26. The outer ring of the cylindrical bearing 41 is fixedly connected to a rotating drum 43. Arc-shaped mounting bases 44 are located on the top of the rotating drum 43, facing each other. Rectangular adjustment slots 45 are located inside the base, and a rectangular control plate 46 is mounted on the bottom. Several strong springs 47 are evenly spaced on the top and connected to the mounting base 44. A headrest mounting plate 48 with mounting holes 49 is located on the top of the mounting base 44. A curved control panel 461 is located between the front and rear control panels 46 and is integrally formed with the control panel 46. The magnetic attraction between the negative magnetic strips 42 and the positive magnetic strips 27 enhances the fixing efficiency of the inner ring of the cylindrical bearing 41. The rotating drum 43 is fixedly connected to the outer ring of the cylindrical bearing 41, allowing the rotating drum 43 and its upper components to be completely disassembled. After installing the headrest, the fingers lift up through the bottom of the control plate 461, squeezing the strong spring 47, driving the fixing mechanism 5 to rise and fall, and realizing flexible adjustment of the tilt angle of the headrest. The arc structure of the control plate 461 facilitates the application of force by the fingers and optimizes the operating experience.

[0062] Innovative design of fixing mechanism 5

[0063] The control panel 46 is provided with an L-shaped connecting plate 51 at one end facing the adjacent support block 21, and the outer end is connected to the extension plate 52 and the pointing plate 53 in sequence. The bottom of the pointing plate 53 is provided with a rack 54.

[0064] The extension plate 52, pointing plate 53, and rack 54 are integrally formed. The rack 54 is the same length as the pointing plate 53 and the tooth groove 22, while the pointing plate 53 is narrower than the extension plate 52. The control panel 46 drives the rack 54 up and down, engaging and disengaging it with the tooth groove 22 at the top of the support block 21, enabling quick adjustment of the headrest's fixed position. This integrated design enhances structural stability, and the precise fit of the rack 54 and the tooth groove 22 ensures a secure, anti-vibration headrest fixation.

[0065] Specifically, the relevant test data for this solution are as follows.

[0066] Experimental design

[0067] Experimental subjects: the existing automobile seat headrest flipping mechanism (control group) and the automobile seat headrest flipping mechanism of the present invention (experimental group).

[0068] Experimental indicators:

[0069] Disassembly and Assembly Time: Measure the time required to completely disassemble and reassemble the headrest flip mechanism.

[0070] Adjustment force: A force sensor is used to measure the minimum force required to adjust the tilt angle of the headrest.

[0071] Stability: By simulating the bumpy driving state of the vehicle, the maximum shaking angle of the headrest is measured.

[0072] Repair time: Simulate the wear and replacement of internal parts and measure the time required for repairs.

[0073] Experimental method: Each group of experiments was repeated 10 times and the average value was taken to ensure data reliability.

[0074] Experimental data

[0075] Experimental indicators control group Experimental group Improvement Disassembly and assembly time (min) 5.2 1.1 78.8％ Adjustment force (N) 4.8 1.7 64.6％ Stability (shake angle, °) 8.5 2.3 72.9％ Maintenance time (min) 28.6 4.3 85.0％

[0076] Data Description

[0077] Disassembly and assembly time: The experimental group uses the magnetic attraction of the support mechanism 2, the complementary structure of the plug plate 28 and the fixing bar 24, and the design of the press-type limit block 35 of the limit mechanism 3 to make the disassembly and assembly process tool-free, the operation is smooth, and the time is greatly shortened.

[0078] Adjustment force: The cooperation between the strong spring 47 and the control plate 461 in the adjustment mechanism 4 reduces the force required to adjust the headrest, making the operation more labor-saving.

[0079] Stability: The precise engagement of the rack 54 of the fixing mechanism 5 with the tooth groove 22, combined with the magnetic stabilizing effect of the supporting mechanism 2, effectively reduces the shaking of the headrest and improves stability.

[0080] Maintenance time: The convenient disassembly and assembly design of each mechanism, such as the quick separation of the support column 26 and the support block 21 and the easy disassembly of the limit ring 31, makes the replacement of internal parts more efficient and significantly shortens maintenance time.

[0081] Data Validity Description

[0082] The experiments were conducted under identical environmental conditions and using professional measurement tools to ensure data accuracy. Each set of experiments was repeated 10 times, and the average value was calculated with an error range of ±5%. The data showed good repeatability and reliability, effectively supporting the technical improvements of the present invention's technical solution in terms of ease of assembly and disassembly, flexibility of adjustment, and stability.

[0083] An explanation of the technical principles and effects of the core implementation technology of this solution.

[0084] Support mechanism: Magnetic attraction and complementary structure realize convenient disassembly and assembly and stable support

[0085] 1.Structural design and working principle

[0086] The support mechanism utilizes a "support block + support column" design, with the curved, complementary structure of the retaining bar and insert plate enabling quick positioning of the support column when inserted into the slot. The magnetic attraction between the positive and negative magnetic plates enhances structural stability during assembly, while magnetic separation during disassembly eliminates the need for tools, significantly simplifying the process.

[0087] 2. Technical Effect

[0088] 78.8% improvement in assembly and disassembly efficiency: Experimental data shows that traditional disassembly and assembly takes 5.2 minutes, while this solution reduces this time to 1.1 minutes through magnetic attraction and a complementary plug-in structure. The integrated design of the support block and support column (for example, the support block and fixing bar are integrally molded) prevents parts from falling apart and further improves assembly and disassembly smoothness.

[0089] Enhanced stability: The dual effects of magnetic adsorption and structural complementarity increase the connection stiffness between the support column and the support block. In the simulated bump test, the headrest shaking angle is reduced from 8.5° to 2.3°, reducing the discomfort caused by the shaking of the passenger's head.

[0090] Limiting mechanism: Press-type elastic limiting mechanism enables flexible positioning and quick disassembly

[0091] 1.Structural design and working principle

[0092] The limiting mechanism wraps two limiting rings around the support column, leveraging the elastic structure of the spring plate and limiting block to limit the inner ring of the cylindrical bearing. When the limiting block is pressed, the spring compresses, causing it to retract into the expansion slot, allowing the limiting ring to be easily removed. When released, the spring returns, and the limiting block automatically engages the support column, ensuring smooth rotation of the bearing outer ring.

[0093] 2. Technical Effect

[0094] Optimized disassembly convenience: Traditional mechanisms require tools to disassemble the limiting components, but this solution uses a push-type design, which can be operated directly by hand during maintenance. The maintenance time is shortened from 28.6 minutes to 4.3 minutes (an increase of 85%), significantly reducing after-sales maintenance costs.

[0095] Improved rotational flexibility: The limiting ring precisely limits the inner ring of the bearing, eliminating the rotational jamming caused by overtightening in traditional mechanisms. In tests of the adjustment mechanism, the headrest adjustment force was reduced from 4.8N to 1.7N (a 64.6% reduction), making operation more labor-efficient.

[0096] Adjustment mechanism: Magnetic force enhances fixation and elastic linkage to achieve flexible adjustment at multiple angles

[0097] 1.Structural design and working principle

[0098] The adjustment mechanism enhances bearing retention efficiency by magnetically attracting the negative magnetic strips on the inner ring of the cylindrical bearing to the positive magnetic strips on the support column. A rotating cylinder is securely connected to the outer ring of the bearing, driving the entire headrest mounting plate to rotate. Pressing the control paddle compresses a powerful spring, disengaging the rack in the retaining mechanism from its slots and adjusting the headrest angle. When released, the spring returns, locking the rack into engagement with the slots.

[0099] 2. Technical Effect

[0100] Improved Adjustment Precision and Flexibility: The powerful spring and rack-and-groove combination allows for precise adjustment of the headrest's tilt angle to within 1°, with stepless adjustment from 0-30°. The ergonomically designed curved control panel facilitates finger application and provides an enhanced operating experience.

[0101] Optimized structural integrity: The integrated design of the rotating drum, fixing seat and headrest mounting plate allows the adjustment mechanism to be disassembled as a whole, avoiding the confusion of parts disassembly and further shortening maintenance time.

[0102] Fixed mechanism: integrated rack structure improves positioning stability and adjustment smoothness

[0103] 1.Structural design and working principle

[0104] The fixing mechanism connects the control board and rack via an L-shaped connecting plate. As the control board rises and falls, driven by a powerful spring, the rack engages and disengages with the tooth groove at the top of the support block. The rack length precisely matches the tooth groove, and the pointing plate is narrower than the extension plate, ensuring precise positioning of the rack when inserted into the tooth groove.

[0105] 2. Technical Effect

[0106] The fixing stability is significantly improved: the engagement depth between the rack and the tooth groove reaches 3mm. Combined with the magnetic support, the maximum shaking angle of the headrest in a bumpy state is reduced from 8.5° to 2.3°, effectively reducing the safety hazards caused by head shaking during driving.

[0107] Optimized adjustment smoothness: The integrated design of the control panel and the rack avoids the clearance problem of the connecting rod transmission in the traditional mechanism. The adjustment process is smooth and the feel is smoother.

[0108] Multi-institutional collaboration improves overall performance

[0109] The synergistic effect of the support mechanism's magnetic assembly and disassembly, the limiter mechanism's elastic positioning, the adjustment mechanism's magnetic fixation and elastic linkage, and the fixing mechanism's rack engagement ensure efficient operation of the headrest's tilting mechanism throughout the entire "assembly, disassembly, adjustment, and fixation" process. Experimental data shows that compared to traditional mechanisms, this solution achieves over 60% improvements in four key metrics: assembly and disassembly time, adjustment force, stability, and maintenance time.

[0110] Modular design reduces maintenance costs

[0111] Each mechanism adopts an integrated molding process (such as the support column and the plug plate are integrated into one piece, and the control board and the rack are integrated into one piece), which reduces the number of parts and assembly errors. At the same time, it is convenient to replace the worn parts (such as limit rings, springs, etc.) separately, reducing after-sales maintenance costs.

[0112] Expansion of applicable scenarios

[0113] This mechanism can adapt to the seat headrests of different models. By adjusting parameters such as tooth groove spacing and spring stiffness, it can meet the comfort and safety requirements of different models such as sedans, SUVs, and commercial vehicles.

[0114] Summary: This invention overcomes the pain points of traditional headrest flip mechanisms, which suffer from difficult assembly and disassembly, laborious adjustment, and complex maintenance, through innovative designs for support, limiting, adjustment, and fixation. The combination of magnetic attraction and mechanical structure, and the synergy between elastic components and rigid positioning, not only achieves lightweight construction and simplified operation, but also demonstrates significant advantages in stability, flexibility, and maintenance efficiency, as verified by experimental data. This provides a novel technical solution for the design of automotive seat headrests.

[0115] The present invention comprises: 1-backrest plug rod; 2-support mechanism; 21-support block; 22-several tooth grooves; 23-slot; 24-several fixing strips; 25-positive magnetic plate; 26-support column; 27-several positive magnetic strips; 28-several inserts; 29-extension column; 210-negative magnetic plate; 3-limiting mechanism; 31-limiting ring; 32-telescopic slot; 33-spring plate; 34-spring; 35-limiting block; 4-adjusting mechanism; 41-cylinder bearing; 42-several negative magnetic strips; 43-rotating drum; 44-fixing seat; 45-adjusting slot; 46-control panel; 461-indicator panel; 47-several strong springs; 4 8-headrest mounting plate; 49-mounting hole; 5-fixing mechanism; 51-connecting plate; 52-extension plate; 53-pointing plate; 54-rack. These components are all universal standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by the present invention is that the flipping mechanism of existing car seat headrests is relatively inflexible during actual use, and its internal structure is very difficult to disassemble. Therefore, if the internal parts are worn or rusted, it will make the headrest adjustment more laborious, and subsequent maintenance will also be very difficult, adding trouble to the user. The present invention greatly reduces the difficulty of disassembling the headrest flipping mechanism, the structure is easy to understand, and disassembly and assembly are convenient and quick, which is conducive to the replacement and maintenance of internal components, and the flexibility of headrest adjustment is also optimized.

[0116] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0117] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Automobile seat headrest flip mechanism, characterized by: The backrest includes a backrest insertion rod (1), a support mechanism (2), a limiting mechanism (3), an adjustment mechanism (4) and a fixing mechanism (5); the backrest insertion rod (1) is arranged in a front-back structure; the support mechanism (2) is arranged above the backrest insertion rod (1); the limiting mechanism (3) is arranged on the support mechanism (2); the adjustment mechanism (4) is arranged on the support mechanism (2); and the fixing mechanism (5) is arranged on the adjustment mechanism (4); The support mechanism (2) comprises a support block (21), a plurality of tooth grooves (22), a slot (23), a plurality of fixing bars (24), a positive magnetic plate (25), a support column (26), a plurality of positive magnetic strips (27), a plurality of inserting plates (28), an extension column (29) and a negative magnetic plate (210), wherein the support block (21) is arranged on the top of each backrest inserting rod (1), the plurality of tooth grooves (22) are evenly arranged on the top of each support block (21), the slot (23) is arranged on the opposite sides of two support blocks (21), and the plurality of fixing bars (24) are arranged between the support blocks (21). A cross-shaped structure is arranged on the inner wall of the slot (23), the positive magnetic plate (25) is arranged at the inner end of each slot (23), the support column (26) is arranged between two slots (23), a plurality of positive magnetic strips (27) are arranged in a cross-shaped structure around the middle of the support column (26), a plurality of plug-ins (28) are evenly arranged around the front and rear ends of the support column (26), the extension column (29) is arranged between the plurality of plug-ins (28) on each side, and the negative magnetic plate (210) is arranged at the outer end of each extension column (29).

2. The automobile seat headrest flip mechanism according to claim 1, characterized in that: The support block (21) is a semicircular arch rectangular combination structure, a plurality of tooth grooves (22) are distributed on the semicircular arch structure at the top of the support block (21), the slot (23) is a circular structure, the fixing bar (24) is an arc-shaped structure, the insert plate (28) is an arc-shaped structure and is complementary to the position of each fixing bar (24), the support block (21) and the fixing bar (24) are integrally formed, and the support column (26), the insert plate (28) and the extension column (29) are integrally formed.

3. The automobile seat headrest flip mechanism according to claim 2, characterized in that: The limiting mechanism (3) comprises a limiting ring (31), a telescopic groove (32), a spring plate (33), a spring (34) and a limiting block (35); the limiting ring (31) is arranged on the support column (26) in a front-to-back structure; the telescopic groove (32) is arranged at one end of each limiting ring (31) away from the other limiting ring (31) opposite thereto; the spring plate (33) is arranged inside the telescopic groove (32) in a left-right structure; the spring (34) is arranged between the two spring plates (33); and the limiting block (35) is arranged on the outer end of the spring plate (33) at the outer end inside the telescopic groove (32).

4. The automobile seat headrest flip mechanism according to claim 3, characterized in that: The two limiting rings (31) are respectively located at the front and rear ends of the positive pole magnetic strip (27) on the supporting column (26), the telescopic slot (32) is located at the left end of the supporting column (26), and the limiting block (35) is an arc-shaped structure.

5. The automobile seat headrest flip mechanism according to claim 4, characterized in that: The adjustment mechanism (4) comprises a cylindrical bearing (41), a plurality of negative magnetic strips (42), a rotating drum (43), a fixing seat (44), an adjustment slot (45), a control panel (46), a plurality of strong springs (47), a headrest mounting plate (48) and a mounting hole (49); the cylindrical bearing (41) is wrapped around the support column (26); the negative magnetic strips (42) are arranged at positions corresponding to each of the positive magnetic strips (27); the rotating drum (43) is wrapped around the cylindrical bearing (41); the fixing seat ( 44) are arranged on the top of the rotating drum (43) in a front-to-back structure, the adjusting groove (45) is arranged inside each of the fixing seats (44), the control panel (46) is arranged at the bottom inside the adjusting groove (45), a plurality of strong springs (47) are equidistantly arranged on the top of the control panel (46) and fixedly connected to the fixing seat (44), the headrest mounting plate (48) is arranged on the top of each of the fixing seats (44), and the mounting hole (49) is arranged on each of the mounting plates (48).

6. The automobile seat headrest flipping mechanism according to claim 5, characterized in that: The outer ring of the cylindrical bearing (41) is fixedly connected to the rotating cylinder (43), the fixing seat (44) is an arc-shaped structure, the adjusting groove (45) is a rectangular structure, and the control plate (46) is a rectangular structure and its area is consistent with the area of ​​the bottom inside the adjusting groove (45).

7. The automobile seat headrest flipping mechanism according to claim 6, characterized in that: The rotating cylinder (43), the fixing seat (44) and the headrest mounting plate (48) are integrally formed.

8. The automobile seat headrest flip mechanism according to claim 7, characterized in that: An accusation panel (461) is provided between the two control panels (46) that are opposed to each other in the front and rear directions. The accusation panel (461) is in an arc-shaped structure. The two control panels (46) and the accusation panel (461) are integrally formed.

9. The automobile seat headrest flip mechanism according to claim 8, characterized in that: The fixing mechanism (5) includes a connecting plate (51), an extension plate (52), a pointing plate (53) and a rack (54), wherein the connecting plate (51) is arranged at one end of each control plate (46) facing the adjacent support block (21), the extension plate (52) is arranged at the outer end of the connecting plate (51), the pointing plate (53) is arranged at the outer end of the extension plate (52), and the rack (54) is arranged at the bottom of the pointing plate (53).

10. The automobile seat headrest flipping mechanism according to claim 9, characterized in that: The connecting plate (51) is in an L-shaped structure, the extending plate (52) is in a rectangular parallelepiped structure, the pointing plate (53) is in a rectangular parallelepiped structure, and the width of the pointing plate (53) is smaller than the width of the extending plate (52), the length of the rack (54) is consistent with the length of the pointing plate (53) and the length of the tooth groove (22), and the control plate (46), the connecting plate (51), the extending plate (52), the pointing plate (53) and the rack (54) are integrally formed.

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