Automobile seat headrest turnover structure

Abstract

The utility model discloses a kind of automobile seat headrest turnover structures, including headrest cross bar, headrest cross bar is installed with the headrest base of rotation cooperation, headrest base is equipped with two parallel first installation shaft and second installation shaft of headrest cross bar, locking tongue is rotatably installed on first installation shaft, unlocking assembly is rotatably installed on second installation shaft, unlocking assembly and locking tongue are elastically connected by tension spring, locking tongue is equipped with the locking gap of one side open, lock bolt is fixedly installed on headrest cross bar, in locking state, lock bolt is limited in locking gap, headrest base is relatively fixed with headrest cross bar;Operating unlocking assembly rotates in direction away from locking tongue, can be driven locking tongue to rotate under the traction of tension spring, to remove the restriction of locking gap to lock bolt, headrest base can rotate around headrest cross bar to front.The beneficial effects of the utility model are: headrest can be folded forward, avoid interference, meet the demand of interior space diversification adjustment.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically to an automotive seat headrest flipping structure. Background Technology

[0002] With the continuous development of the automobile consumer market, passengers' demands for the car riding experience are becoming increasingly diversified. They not only pay attention to the basic comfort of the seats, but also place higher demands on the flexible use of the interior space. This has prompted the development of car seat structures towards adjustable and deformable designs, and the diversified configuration of the interior space has become an important indicator for measuring the practicality of a car.

[0003] In practical use, when the rear seats need to be folded forward to expand interior space or deform, the rear seat headrests often become a key factor affecting the folding operation. Because the rear headrests are typically in a vertical support position and their top height is relatively high, they can easily interfere with the front seat backrests during the overall folding process. To avoid this interference and ensure smooth folding of the rear seats for flexible space conversion, the rear headrests usually need to be folded forward to a lower position first, reducing their overall height and creating sufficient space for the rear seats to fold, thus meeting the practical needs of diverse interior space adjustments. Utility Model Content

[0004] In view of this, the present invention provides a car seat headrest flipping structure that enables the headrest to fold forward and avoids interference.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A car seat headrest flipping structure includes two headrest rods for mounting on the top of the seat. A headrest crossbar is provided at the upper end of each headrest rod. A headrest base is mounted on the crossbar and rotates therewith. The headrest base has two mounting shafts parallel to the crossbar: a first mounting shaft and a second mounting shaft. A locking tongue is rotatably mounted on the first mounting shaft, and an unlocking component is rotatably mounted on the second mounting shaft. The unlocking component and the locking tongue are elastically connected by a tension spring. The locking tongue has a locking notch with one open side. A locking bolt is fixedly mounted on the crossbar. In the locked state, the locking bolt is confined within the locking notch. The headrest base and the crossbar are relatively fixed.

[0007] By manipulating the unlocking component to rotate away from the bolt, the bolt can be rotated under the traction of the tension spring, thereby releasing the locking notch from restricting the bolt, and the headrest base can rotate forward around the headrest crossbar.

[0008] By adopting the above structure, the headrest can be rotated through the rotation of the headrest crossbar and the headrest base, as well as the locking and unlocking mechanism of the locking tongue and bolt. When the rear seats need to be folded down, the headrest can be flipped forward to a low position to avoid spatial interference with the back of the front seats, thus realizing flexible conversion of the interior space.

[0009] Preferably, the unlocking component has a first positioning groove and a second positioning groove on the side near the latch, and the latch has a positioning part on the side near the unlocking component. In the locked state, the positioning part is constrained in the first positioning groove. During the unlocking process of the unlocking component driving the latch to unlock, the positioning part can slide from the first positioning groove into the second positioning groove so that the latch remains in the unlocked state.

[0010] During the rearward flip-up reset process of the headrest base, one side of the open end of the locking notch can strike the bolt, passively driving the positioning part to slide from the second positioning groove into the first positioning groove, so that the latch automatically resets to the locked state. This structure is convenient to operate and ensures the stability of the headrest in both adjustable and non-adjustable states. Even if vibrations occur during vehicle movement, the latch will not rotate unexpectedly due to inertia.

[0011] Preferably, the unlocking assembly includes a first unlocking plate and a second unlocking plate coaxially mounted on a second mounting shaft. A stop lever extends from the first unlocking plate toward the second unlocking plate, and one side of the second unlocking plate abuts against the stop lever. A traction assembly is connected to the second unlocking plate; when the traction assembly drives the second unlocking plate to rotate toward the unlocking position, it simultaneously drives the first unlocking plate via the stop lever. This structure eliminates installation gaps, increases strength, and ensures smooth headrest flipping operation.

[0012] Preferably, the latch has a mounting hole, and a tension spring connects the latch to the unlocking assembly. One end of the tension spring is fixed in the mounting hole, and the other end is fixed to the stop bar. This structure allows the unlocking assembly to rotate the latch.

[0013] Preferably, the first unlocking piece has a reinforcing protrusion extending outward from its edge. In the locked state, the top of the reinforcing protrusion abuts against the latch; in the unlocked state, one side of the reinforcing protrusion abuts against the positioning part. This structure enhances the latch's impact resistance when locked, reducing the risk of accidental unlocking; and assists in fixing the positioning part when unlocked, strengthening the limiting effect and providing double protection for the headrest's positional accuracy during adjustment.

[0014] Preferably, a reinforcing plate is fixedly mounted on the first and second mounting shafts. The reinforcing plate has an opening for avoiding obstruction, the opening of which faces the opposite direction to the rotation direction of the headrest base around the headrest crossbar. In the locked state, the locking bolt is located within the opening. With this structure, the reinforcing plate enhances the structural rigidity of the mounting shafts, preventing deformation under stress. The reverse opening design allows the locking bolt to be avoided when the headrest base rotates, ensuring unobstructed rotation.

[0015] Preferably, a plastic patch is fixed to the bottom of the clearance opening. This structure avoids direct friction between the bolt and the reinforcing plate, reducing noise during flipping or locking.

[0016] Preferably, a torsion spring is fitted onto the second mounting shaft, and a groove is provided on the side of the reinforcing plate near the first unlocking piece. The first unlocking piece protrudes outwards corresponding to the groove to form a mounting part. One end of the torsion spring is engaged in the groove, and the other end abuts against the mounting part. This structure provides a reset force for the unlocking assembly, improving the accuracy of the bolt reset.

[0017] Preferably, a support is rotatably mounted on the headrest crossbar, the support being fixedly connected to the headrest base with an installation gap between them; the locking tongue, unlocking assembly, tension spring, and reinforcing plate are all disposed within the installation gap, and both the headrest base and the support have lugs at their front ends for fixing the headrest frame. This structure is compact, facilitating integration into the narrow space inside the headrest, enhancing overall rigidity, and ensuring structural stability without wobbling during folding.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. Through the locking and unlocking cooperation of the latch and bolt, and the structural design of the unlocking component driving the latch to rotate, the headrest can be flipped around the crossbar, avoiding space interference between the rear seats and the front seat back when the rear seats are folded down, thus meeting the needs for flexible adjustment and diversified configuration of the interior space.

[0020] 2. The locking tongue and unlocking component cooperate through the positioning part and positioning groove. In the locked state, it is constrained by the first positioning groove, and the reinforcing protrusion abuts against the locking tongue. In the unlocked state, it is constrained by the second positioning groove, and the reinforcing protrusion assists in the limiting function, so that the headrest can maintain a stable position in both the locked and unlocked states. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 To illustrate the structural diagram of reinforcing plate 8;

[0023] Figure 3 This is a schematic diagram of the locked side;

[0024] Figure 4 This is a diagram of the other side of the locked state;

[0025] Figure 5 A schematic diagram showing the connection between the locking tongue 2 and the unlocking component 3;

[0026] Figure 6 A partial view showing the mounting method of torsion spring 12;

[0027] Figure 7 This is a diagram showing the unlocked side.

[0028] Figure 8 This is a diagram illustrating the other side of the unlocked state. Detailed Implementation

[0029] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0030] like Figure 1 and Figure 2 As shown, a car seat headrest flipping structure includes two headrest rods 13 for mounting on the top of the seat. The upper ends of the two headrest rods 13 are fixedly connected to a headrest crossbar 4 arranged along the length of the headrest. A headrest base 1 is rotatably mounted on the headrest crossbar 4. The headrest base 1 is provided with two first mounting shafts 1a and second mounting shafts 1b parallel to the headrest crossbar 4, which are spaced apart to reserve assembly space.

[0031] like Figure 3 As shown, a locking tongue 2 is rotatably mounted on the first mounting shaft 1a. The locking tongue 2 has a locking notch 2a with an open side. A locking bolt 5 is welded and fixed to the headrest crossbar 4 at the corresponding position. In the locked state, the locking bolt 5 is restricted within the locking notch 2a, and the headrest base 1 and the headrest crossbar 4 are fixed relative to each other through the interlocking cooperation between the two. When unlocked, the locking notch 2a releases the restriction on the locking bolt 5, and the headrest base 1 can rotate forward around the headrest crossbar 4. When the rear seats need to be folded, the headrest can be flipped forward and folded to avoid interference with the back of the front seats, making the interior space conversion more flexible.

[0032] like Figure 3 As shown, specifically, an unlocking assembly 3 is rotatably mounted on the second mounting shaft 1b. The unlocking assembly 3 includes a first unlocking piece 31 and a second unlocking piece 32 coaxially stacked. A stop bar 31a is fixed to the side of the first unlocking piece 31 facing the second unlocking piece 32, and the edge of the second unlocking piece 32 abuts against the stop bar 31a. Figure 1As shown, a traction assembly 6 is connected to the outer side of the second unlocking piece 32. In this embodiment, the traction assembly 6 includes a traction plate 61, one end of which is fixed to the second unlocking piece 32 by a buckle 62, and the other end extends to the operation button on the side of the headrest. When the traction assembly 6 drives the second unlocking piece 32 to rotate to the unlocking position, the first unlocking piece 31 is simultaneously driven to rotate in the same direction by the stop lever 31a. This design can eliminate installation gaps, improve strength, and ensure smooth headrest flipping operation.

[0033] like Figure 5 As shown, the locking tongue 2 and the unlocking component 3 are elastically connected by a tension spring 7. The locking tongue 2 has a mounting hole 2b. One end of the tension spring 7 is fixed in the mounting hole 2b, and the other end is wrapped and fixed on the stop bar 31a.

[0034] like Figure 3 and Figure 7 As shown, the unlocking component 3 has a first positioning groove 32a and a second positioning groove 32b on the side near the latch 2, and a positioning part 2c on the side near the unlocking component 3. In the locked state, the positioning part 2c is constrained within the first positioning groove 32a. This fit restricts the movement of the latch 2 in the locked position, and even if vibration occurs during vehicle operation, the latch 2 will not rotate unexpectedly due to inertia, ensuring the stability of the headrest in the non-adjustable state. During the unlocking process of the unlocking component 3 driving the latch 2 to unlock, the positioning part 2c can slide from the first positioning groove 32a into the second positioning groove 32b to keep the latch 2 in the unlocked state, preventing it from automatically returning to its original position due to vibration and affecting the headrest flipping operation. When reset is required, during the rearward flipping of the headrest base 1, one side of the open end of the locking notch 2a can strike the bolt 5, passively driving the positioning part 2c to slide from the second positioning groove 32b into the first positioning groove 32a, realizing the automatic reset of the latch 2 to the locked state without additional manual operation, improving ease of use.

[0035] like Figure 4 and Figure 8 As shown, the first unlocking piece 31 has a reinforcing protrusion 31b extending outward from its edge. In the locked state, the top of the reinforcing protrusion 31b abuts against the locking tongue 2, which can enhance the impact resistance of the locking tongue 2 and reduce the risk of accidental unlocking. In the unlocked state, one side of the reinforcing protrusion 31b abuts against the positioning part 2c, which can help fix the positioning part 2c and strengthen the limiting effect, thus providing double protection for the positional accuracy of the headrest during the adjustment process.

[0036] like Figure 4As shown, the thickness of the locking tongue 2 is greater than the combined thickness of the first unlocking piece 31 and the second unlocking piece 32. The side of the locking tongue 2 near the unlocking assembly 3 has an outwardly protruding thickened part 2e. The thickened part 2e can restrict the axial displacement of the first unlocking piece 31 and the second unlocking piece 32 along the mounting axis direction. At the same time, under conditions such as headrest flipping and vehicle vibration, it can resist the influence of torsional force on the assembly gap, maintain the relative position of the locking tongue 2 and the unlocking piece, and ensure the long-term stability of the locking and unlocking functions.

[0037] like Figure 2 As shown, a reinforcing plate 8 is fixedly mounted on the first mounting shaft 1a and the second mounting shaft 1b. The reinforcing plate 8 has an clearance opening 8a, the opening of which faces the opposite direction to the rotation direction of the headrest base 1 around the headrest crossbar 4. In the locked state, the locking bolt 5 is located inside the clearance opening 8a, and the width of the groove in the clearance opening 8a is greater than the diameter of the locking bolt 5, ensuring that there is no jamming when the headrest is rotated. A plastic patch 9 is fixedly provided at the bottom of the clearance opening 8a, which can prevent direct friction between the locking bolt 5 and the reinforcing plate 8, reduce abnormal noise during rotation or locking, and improve riding comfort.

[0038] like Figure 6 As shown, a torsion spring 12 is also fitted onto the second mounting shaft 1b. A groove 8b is provided on the side of the reinforcing plate 8 near the first unlocking piece 31. The first unlocking piece 31 protrudes outwards corresponding to the groove 8b to form a mounting part 31c. One end of the torsion spring 12 is engaged in the groove 8b, and the other end rests against the mounting part 31c. The torsion spring 12 provides a reset force for the unlocking assembly 3, improving the accuracy of the locking tongue 2's reset.

[0039] like Figure 1 As shown, a support 10 is rotatably mounted on the headrest crossbar 4. The support 10 is fixedly connected to the headrest base 1 by bolts, and there is an installation gap 11 between the two. The locking tongue 2, unlocking component 3, tension spring 7 and reinforcing plate 8 are all set within the installation gap 11. This layout makes the structure more compact and easy to integrate into the narrow space inside the headrest. The front ends of the headrest base 1 and the support 10 are both integrally formed with lugs 11a, which are fixedly connected to the headrest frame by bolts, which can enhance the overall rigidity and ensure that the structure is stable and does not wobble when the headrest is folded.

[0040] like Figure 1 and Figure 7 As shown, when the headrest is folded forward, the traction assembly 6 drives the second unlocking plate 32 to rotate away from the latch 2, synchronously driving the first unlocking plate 31 through the stop lever 31a. Under the traction of the tension spring 7, the first unlocking plate 31 further drives the latch 2 to rotate, causing the locking notch 2a to release the restriction on the bolt 5. At this time, the positioning part 2c on the latch 2 slides from the first positioning groove 32a of the second unlocking plate 32 into the second positioning groove 32b, the latch 2 remains unlocked, and the headrest base 1 can rotate freely forward around the headrest crossbar 4 until the folding is completed.

[0041] like Figure 1 and Figure 7 As shown, when the headrest flips back to its original position, it pushes the headrest base 1 to rotate backward around the headrest crossbar 4. During this process, the open end of the locking notch 2a of the locking tongue 2 will hit the locking bolt 5 of the headrest crossbar 4. This impact force passively drives the locking tongue 2 to rotate, causing the positioning part 2c to slide from the second positioning groove 32b of the second unlocking piece 32 back to the first positioning groove 32a. The locking tongue 2 automatically resets to the locked state, and the locking bolt 5 is re-restricted within the locking notch 2a. The headrest base 1 and the headrest crossbar 4 return to relative fixation, completing the reset.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A car seat headrest flipping structure, characterized in that: The device includes two headrest rods (13) for mounting on the top of the seat. A headrest crossbar (4) is provided at the upper end of the two headrest rods (13). A headrest base (1) is mounted on the headrest crossbar (4) and rotates therewith. The headrest base (1) is provided with two first mounting shafts (1a) and second mounting shafts (1b) parallel to the headrest crossbar (4). A locking tongue (2) is rotatably mounted on the first mounting shaft (1a), and an unlocking component (3) is rotatably mounted on the second mounting shaft (1b). The unlocking component (3) and the locking tongue (2) are elastically connected by a tension spring (7). The locking tongue (2) is provided with a locking notch (2a) with an open side. A locking bolt (5) is fixedly mounted on the headrest crossbar (4). In the locked state, the locking bolt (5) is restricted in the locking notch (2a). The headrest base (1) and the headrest crossbar (4) are fixed relative to each other. By manipulating the unlocking component (3) to rotate away from the latch (2), the latch (2) can be rotated under the traction of the tension spring (7) to release the restriction of the locking notch (2a) on the bolt (5), and the headrest base (1) can rotate forward around the headrest crossbar (4).

2. The car seat headrest flipping structure according to claim 1, characterized in that: The unlocking component (3) has a first positioning groove (32a) and a second positioning groove (32b) on the side near the latch (2). The latch (2) has a positioning part (2c) on the side near the unlocking component (3). In the locked state, the positioning part (2c) is constrained in the first positioning groove (32a). During the unlocking process of the unlocking component (3) driving the latch (2) to unlock, the positioning part (2c) can slide from the first positioning groove (32a) into the second positioning groove (32b) so that the latch (2) remains in the unlocked state. During the rearward flip-up reset of the headrest base (1), one side of the open end of the locking notch (2a) can strike the bolt (5) to passively drive the positioning part (2c) to slide from the second positioning groove (32b) into the first positioning groove (32a), so that the locking tongue (2) automatically resets to the locked state.

3. The car seat headrest flipping structure according to claim 1, characterized in that: The unlocking assembly (3) includes a first unlocking plate (31) and a second unlocking plate (32) coaxially mounted on a second mounting shaft (1b). The first unlocking plate (31) has a stop bar (31a) extending toward the second unlocking plate (32). One side of the second unlocking plate (32) abuts against the stop bar (31a). The second unlocking plate (32) is connected to a traction assembly (6). When the traction assembly (6) drives the second unlocking plate (32) to rotate toward the unlocking position, the first unlocking plate (31) is simultaneously driven by the stop bar (31a).

4. The car seat headrest flipping structure according to claim 3, characterized in that: The locking tongue (2) has an installation hole (2b), and a tension spring (7) is connected between the locking tongue (2) and the unlocking component (3). One end of the tension spring (7) is fixed in the installation hole (2b), and the other end is fixed on the stop bar (31a).

5. The car seat headrest flipping structure according to claim 3, characterized in that: The first unlocking piece (31) has a reinforcing protrusion (31b) extending outward from its edge. In the locked state, the top of the reinforcing protrusion (31b) abuts against the locking tongue (2); in the unlocked state, one side of the reinforcing protrusion (31b) abuts against the positioning part (2c).

6. The car seat headrest flipping structure according to claim 3, characterized in that: A reinforcing plate (8) is fixedly installed on the first mounting shaft (1a) and the second mounting shaft (1b). The reinforcing plate (8) is provided with an avoidance opening (8a). The opening direction of the avoidance opening (8a) is opposite to the rotation direction of the headrest base (1) around the headrest crossbar (4). In the locked state, the bolt (5) is located in the avoidance opening (8a).

7. The car seat headrest flipping structure according to claim 6, characterized in that: A plastic patch (9) is fixed to the bottom of the clearance opening (8a).

8. The car seat headrest flipping structure according to claim 6, characterized in that: A torsion spring (12) is sleeved on the second mounting shaft (1b). The reinforcing plate (8) has a slot (8b) on the side near the first unlocking piece (31). The first unlocking piece (31) protrudes outward from the slot (8b) to form a mounting part (31c). One end of the torsion spring (12) is locked in the slot (8b), and the other end abuts against the mounting part (31c).

9. A car seat headrest flipping structure according to claim 6, characterized in that: A support (10) is rotatably mounted on the headrest crossbar (4). The support (10) is fixedly connected to the headrest base (1), and there is an installation gap (11) between them. The locking tongue (2), unlocking component (3), tension spring (7) and reinforcing plate (8) are all set in the installation gap (11). The front ends of the headrest base (1) and the support (10) are provided with lugs (11a) for fixing the headrest frame.

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