Headrest assembly and seat

Abstract

The utility model discloses a headrest assembly and a seat. The headrest assembly comprises a first support and a second support, the mounting frame is in sliding connection with the first bracket; the headrest is connected with the mounting frame; the first locking structure comprises a first sliding seat, a first clamping piece and a second clamping piece, the first sliding seat is arranged on one of the first support and the mounting frame in a sliding mode, the second clamping piece is arranged on the other one of the first support and the mounting frame, the first clamping piece is movably arranged on the first sliding seat and is in linkage connection with the first sliding seat, and the second clamping piece is arranged on the other one of the first support and the mounting frame. The second clamping piece and the first clamping piece are oppositely arranged; the first sliding seat slides to drive the first clamping piece to move towards the second clamping piece to form clamping fit with the second clamping piece so as to lock the mounting frame or to drive the first clamping piece to move back to the second clamping piece to cancel clamping fit with the second clamping piece so as to unlock the mounting frame. According to the headrest assembly, the position of the headrest is adjusted and locked through the first locking structure, adjusting operation is easy and convenient, and the structural stability is good.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a headrest assembly and a seat. Background Technology

[0002] Chairs are commonly seen in offices, study rooms, and other similar spaces, meeting people's needs for sitting while working, studying, or resting. Generally, a chair consists of a base, backrest, seat cushion, and headrest. When using a chair, the head and / or neck can naturally rest on the headrest, which provides support for the head and neck.

[0003] In related technologies, the headrests of seats have position adjustment functions and are equipped with a locking structure that can lock their position. However, the locking structure is complex, inconvenient to adjust, and lacks stability, which affects the user experience. Utility Model Content

[0004] The main purpose of this utility model is to propose a headrest assembly, which aims to solve to some extent the technical problems of inconvenient adjustment and poor stability of the locking structure used for position adjustment in existing headrests.

[0005] To achieve the above objectives, this utility model proposes a headrest assembly, which includes:

[0006] First support;

[0007] The mounting bracket is slidably connected to the first bracket;

[0008] The headrest is connected to the mounting bracket;

[0009] The first locking structure includes a first slide block, a first retaining member, and a second retaining member. The first slide block is slidably disposed on one of the first bracket and the mounting bracket. The second retaining member is disposed on the other of the first bracket and the mounting bracket. The first retaining member is movably disposed on the first slide block and is linked to the first slide block. The second retaining member is disposed opposite to the first retaining member.

[0010] Specifically, by sliding the first slide block, the first holding member is driven to move toward the second holding member to form a holding engagement with the second holding member to lock the mounting bracket, or the first holding member is driven to move away from the second holding member to cancel the holding engagement with the second holding member to unlock the mounting bracket.

[0011] In some embodiments, the first bracket or the mounting bracket is provided with a first slide groove, and the first slide block is located in the first slide groove and can slide relative to the first slide groove;

[0012] A first guide structure is provided between the first holding member and the first sliding groove. The first guide structure includes a first guide shaft and a first guide groove. The first guide shaft is disposed on one of the side wall of the first holding member and the groove wall of the first sliding groove, and the first guide groove is disposed on the other of the side wall of the first holding member and the groove wall of the first sliding groove. The first guide shaft passes through the first sliding block and extends into the first guide groove.

[0013] Wherein, the first guide slide shaft slides relative to the first guide groove when the first slide block slides, so as to drive the first holding member to move toward or away from the second holding member.

[0014] In some embodiments, the first slide block is provided with an inclined groove through which the first guide slide shaft passes, and the first guide slide shaft forms a contact fit with the groove wall of the inclined groove;

[0015] Wherein, the extension direction of the first guide groove is the same as the movement direction of the first clamping member, and the extension direction of the inclined groove has an angle with the movement direction of the first clamping member.

[0016] In some embodiments, the number of the first guide structures is one set, and the set of first guide structures is located on one side of the first holding member; or...

[0017] The number of the first guide structures is two sets. One set of the first guide structures is located on one side of the first clamping member, and the other set of the first guide structures is located on the other side of the first clamping member. The two sets of the first guide structures are positioned opposite each other.

[0018] In some embodiments, one of the first retaining member and the second retaining member is provided with a first retaining tooth, and the other of the first retaining member and the second retaining member is provided with a first retaining groove. The number of at least one of the first retaining tooth and the first retaining groove is multiple and they are arranged sequentially along the sliding direction of the first slide.

[0019] The first locking tooth is used to engage with the first locking slot when the first locking member moves toward the second locking member so that the first locking member and the second locking member form a locking engagement, or to disengage from the first locking slot when the first locking member moves away from the second locking member so that the locking engagement between the first locking member and the second locking member is canceled.

[0020] In some embodiments, the first slot is an oblique slot, and the first tooth is an oblique tooth adapted to the oblique slot.

[0021] The first slot forms a stop on the first tooth to restrict the first holding member from sliding relative to the second holding member in a first direction, and the first tooth can exit the first slot when the first holding member slides relative to the second holding member in a second direction, wherein the second direction is opposite to the first direction.

[0022] In some embodiments, the headrest assembly further includes:

[0023] A first actuating structure is connected to the first slide block, and the first actuating structure is used to drive the first slide block to slide.

[0024] In some embodiments, the first actuating structure includes:

[0025] The first pull wire is connected to the first slide block;

[0026] A first wired switch is disposed on the headrest and connected to the first pull cord. The first wired switch is used to pull the first pull cord to drive the first slide block to slide.

[0027] A reset element acts on the first slide block, and the reset element is used to provide a force to reset the first slide block.

[0028] In some embodiments, the headrest assembly further includes:

[0029] The second bracket is slidably connected to the first bracket, and the direction in which the first bracket slides relative to the second bracket is different from the direction in which the mounting bracket slides relative to the first bracket.

[0030] The second locking structure includes a second slide, a third retainer and a fourth retainer. The second slide is slidably disposed on one of the second bracket and the first bracket. The fourth retainer is disposed on the other of the second bracket and the first bracket. The third retainer is movably disposed on the second slide and is linked to the second slide. The fourth retainer and the third retainer are disposed opposite to each other.

[0031] Wherein, by sliding the second slide block, the third holding member is driven to move toward the fourth holding member to form a holding engagement with the fourth holding member to lock the first bracket, or the third holding member is driven to move away from the fourth holding member to cancel the holding engagement with the fourth holding member to unlock the first bracket;

[0032] The second slide is linked to the first slide, and when one of the first slide and the second slide slides, it drives the other slides synchronously.

[0033] In some embodiments, the headrest assembly further includes:

[0034] A first actuating structure is connected to the first slide block, and the first actuating structure is used to drive the first slide block to slide; or...

[0035] The second actuating structure is connected to the second slide block, and the second actuating structure is used to drive the second slide block to slide.

[0036] In some embodiments, the headrest assembly further includes:

[0037] A linkage rod is provided inside the first bracket. One end of the linkage rod is connected to the first slide block, and the other end of the linkage rod is connected to the second slide block. When one of the first slide block and the second slide block slides, the other slides synchronously through the linkage rod.

[0038] This utility model also proposes a seat, which includes a seat body and a headrest assembly as described above, the headrest assembly being disposed on the seat body.

[0039] This utility model's headrest assembly supports the user's head and / or neck. If the user needs to adjust the headrest's support position, the first sliding block of the first locking structure can be controlled to slide, causing the first latching member to move away from the second latching member and disengage from the second latching member, thereby unlocking the mounting bracket on the first support. Thus, the mounting bracket can be used to slide the headrest connected to it on the first support to adjust the headrest's support position. After adjustment, the first sliding block can be controlled to slide, driving the first latching member to move towards the second latching member and engage with it, thereby locking the mounting bracket on the first support. The adjustment operation is simple and convenient. Furthermore, under the engagement of the first and second latching members, the mounting bracket is securely locked on the first support, ensuring a stable support position for the headrest. This structural stability enhances the user experience. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the headrest assembly in one embodiment of the present invention;

[0041] Figure 2 for Figure 1 A schematic diagram of the headrest assembly in the embodiment from another perspective;

[0042] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0043] Figure 4 for Figure 1 A schematic diagram of the headrest assembly in the embodiment from another perspective;

[0044] Figure 5 for Figure 4 Sectional view of BB;

[0045] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0046] Figure 7 for Figure 5 Enlarged view at point D;

[0047] Figure 8 for Figure 1 A schematic diagram of a portion of the headrest assembly in the embodiment;

[0048] Figure 9 for Figure 1 An exploded view of a portion of the headrest assembly in the embodiment;

[0049] Figure 10 for Figure 1 A schematic diagram of a portion of the headrest assembly in the embodiment;

[0050] Figure 11 This is a schematic diagram of the structure of the first locking tooth and the first locking groove in one embodiment of the present invention. Detailed Implementation

[0051] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0052] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0053] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0054] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0055] This utility model embodiment provides a headrest assembly 100 for use in a seat. In addition to the headrest assembly 100, the seat also includes a base, a seat cushion, and a backrest. The seat cushion is disposed on the base for a user to sit on, providing support for the user's buttocks and thighs. The backrest is disposed behind the seat cushion and connected to the base, for a user to lean against, providing support for the user's back and lower back. When the headrest assembly 100 is used in a seat, it can be disposed on the backrest or on a backrest bracket for supporting the backrest, to provide support for the user's head and / or neck.

[0056] Reference Figures 1 to 6 The headrest assembly 100 includes:

[0057] First support 110;

[0058] Mounting bracket 120 is slidably connected to first bracket 110;

[0059] Headrest 130 is connected to mounting bracket 120;

[0060] The first locking structure 140 includes a first slide 141, a first retaining member 142, and a second retaining member 143. The first slide 141 is slidably disposed on one of the first bracket 110 and the mounting bracket 120, and the second retaining member 143 is disposed on the other of the first bracket 110 and the mounting bracket 120. The first retaining member 142 is movably disposed on the first slide 141 and is linked to the first slide 141. The second retaining member 143 is disposed opposite to the first retaining member 142.

[0061] Specifically, by sliding the first slide block 141, the first retaining member 142 is driven to move toward the second retaining member 143 to form a retaining engagement with the second retaining member 143 to lock the mounting bracket 120, or the first retaining member 142 is driven to move away from the second retaining member 143 to cancel the retaining engagement with the second retaining member 143 to unlock the mounting bracket 120.

[0062] In the headrest assembly 100 involved in this embodiment, such as Figure 1 and Figure 2As shown, the first bracket 110 serves as the structural foundation of the headrest assembly 100, providing stable support for the installation and movement of other components. The first bracket 110 can be a rod-shaped or column-shaped structure and can be installed on the backrest or backrest support of the seat, possessing sufficient strength and rigidity to withstand various forces acting on the headrest assembly 100 during use.

[0063] The mounting bracket 120 is slidably connected to the first support 110, allowing it to move in a predetermined direction relative to the first support 110. This movement drives the headrest 130 to change its position, thus adjusting the position of the headrest 130. The predetermined direction can be the fore-and-aft direction of the seat; the sliding of the mounting bracket 120 relative to the first support 110 adjusts the position of the headrest 130 in this fore-and-aft direction. This is merely an example and not a limitation. Figure 2 and Figure 3 As shown, to ensure smooth and stable sliding, the shape and structure of the mounting bracket 120 are adapted to the first support 110. The mounting bracket 120 may include an integrally formed headrest connecting part and a sliding part. The sliding part has a semi-cylindrical cavity, and one end of the first support 110 is housed in the semi-cylindrical cavity and forms a sliding fit with the sliding part. The headrest connecting part is located at one end of the sliding part and has two counter-extending, symmetrically arranged connecting arms, the ends of which are connected to the headrest 130.

[0064] The headrest 130 is designed to directly contact the user's head, providing comfortable support. The headrest 130 is typically made of a soft and elastic material (such as memory foam), and its ergonomic design effectively relieves neck fatigue and pressure. Optionally, the headrest 130 is rotatably connected to the mounting bracket 120, allowing it to adaptively adjust its support position according to the user's head and / or neck position when the user leans against it.

[0065] like Figure 3 and Figure 6As shown, the first locking structure 140 is disposed between the first bracket 110 and the mounting bracket 120, and is used to lock or unlock the mounting bracket 120. In the locked state, the mounting bracket 120 remains fixed relative to the first bracket 110, while in the unlocked state, it can move freely relative to the first bracket 110. The first locking structure 140 consists of a first slide 141, a first retaining member 142, and a second retaining member 143. The first slide 141 and the first retaining member 142 and the second retaining member 143 are respectively disposed on the first bracket 110 and the mounting bracket 120. Specifically, the first slide 141 can be disposed on the mounting bracket 120, and the second retaining member 143 can be disposed on the first bracket 110; or, the first slide 141 can be disposed on the first bracket 110, and the second retaining member 143 can be disposed on the mounting bracket 120, depending on actual needs. The first slide block 141 is slidable. For example, if the first slide block 141 is mounted on the mounting frame 120, it can be connected to the mounting frame 120 through a structure such as a guide rail or a slide groove, so that the first slide block 141 can slide linearly on the mounting frame 120 and maintain good guidance during the sliding process to avoid deviation or jamming.

[0066] Furthermore, since the first holding member 142 is disposed on the first slide block 141 and is linked to the first slide block 141, the first holding member 142 can move along with the first slide block 141 when it slides. The linkage between the first holding member 142 and the first slide block 141 can be achieved by a gear and rack structure or other suitable transmission structure, which will be further explained in subsequent embodiments. Specifically, the first slide block 141 has two opposite sliding directions, namely direction one and direction two. When the first slide block 141 slides towards direction one, it can drive the first retaining member 142 to move towards the second retaining member 143 to form a retaining engagement with the second retaining member 143, thereby locking the mounting bracket 120. At this time, the headrest 130 is in a fixed position, which can provide stable and reliable support for the user's head and / or neck. When the first slide block 141 slides towards direction two, it can drive the first retaining member 142 to move away from the second retaining member 143 to cancel the retaining engagement with the second retaining member 143, thereby unlocking the mounting bracket 120. In this way, the mounting bracket 120 can slide freely relative to the first bracket 110, realizing the adjustment of the position of the headrest 130.

[0067] The working process of the headrest assembly 100 in this embodiment is as follows:

[0068] When the user needs to adjust the position of the headrest 130, force is first applied to the first slide 141, causing it to slide on its mounting bracket 120 or the first support 110. For example, if the first slide 141 is on the mounting bracket 120, an external force pushes it to move in the second direction. Due to the linkage between the first retaining member 142 and the first slide 141, the sliding of the first slide 141 will cause the first retaining member 142 to move synchronously. During this process, the first retaining member 142 gradually moves away from the second retaining member 143, and the retaining engagement between them is canceled, thereby unlocking the mounting bracket 120. At this time, the mounting bracket 120 can slide freely relative to the first support 110. The user can slide the mounting bracket 120 to a suitable position according to their own needs, so that the headrest 130 is in a more comfortable position.

[0069] Once the mounting bracket 120 reaches the desired position, the external force on the first slide block 141 is released. Under the action of some elastic reset elements or other mechanical structures, the first slide block 141 will slide in one direction, causing the first retaining member 142 to move towards the second retaining member 143. The first retaining member 142 and the second retaining member 143 re-establish a retaining engagement, locking the mounting bracket 120 in the current position. The headrest 130 is also fixed accordingly, ensuring that the headrest 130 will not move arbitrarily during subsequent use, providing stable and reliable support for the user's head and / or neck.

[0070] With the engaging action of the first retaining member 142 and the second retaining member 143, the mounting bracket 120 is securely locked onto the first support 110, ensuring a stable support position for the headrest 130. In this embodiment, the headrest assembly achieves position adjustment and locking of the headrest 130 through the first locking structure 140. The adjustment operation is simple and convenient, and the structure has good stability, which helps to improve the user experience.

[0071] Throughout the process, the components work closely and in a coordinated manner. Through the ingenious design of the first locking structure 140, the headrest assembly 100 achieves convenient adjustment and stable locking functions, effectively improving the user experience. Furthermore, the headrest assembly 100 has a relatively simple structure, good economy and practicality, and can be widely used in various types of seats.

[0072] In some embodiments, refer to Figure 6 , Figure 8 and Figure 9 The first bracket 110 or mounting bracket 120 is provided with a first sliding groove H1, and the first sliding block 141 is located in the first sliding groove H1 and can slide relative to the first sliding groove H1;

[0073] A first guide structure is provided between the first holding member 142 and the first sliding groove H1. The first guide structure includes a first guide shaft Z1 and a first guide groove C1. The first guide shaft Z1 is disposed on one of the side wall of the first holding member 142 and the groove wall of the first sliding groove H1. The first guide groove C1 is disposed on the other of the side wall of the first holding member 142 and the groove wall of the first sliding groove H1. The first guide shaft Z1 passes through the first sliding block 141 and extends into the first guide groove C1.

[0074] The first guide slide Z1 slides relative to the first guide groove C1 when the first slide block 141 slides, so as to drive the first holding member 142 to move toward or away from the second holding member 143.

[0075] When the first slide block 141 is mounted on the first bracket 110 or the mounting bracket 120, the first bracket 110 or the mounting bracket 120 is correspondingly provided with a first sliding groove H1 to accommodate the first slide block 141 and realize the slidable setting of the first slide block 141. The first sliding groove H1 provides a sliding track for the first slide block 141 and determines the sliding trajectory, restricting the movement direction of the first slide block 141, so that the first slide block 141 can slide smoothly along a predetermined straight line direction.

[0076] The first guide structure provided between the first holding member 142 and the first sliding groove H1 is used to slide and guide the first holding member 142 to guide its sliding direction. Specifically, the first guide shaft Z1 and the first guide groove C1 of the first guide structure are respectively provided on the side wall of the first holding member 142 and the groove wall of the first sliding groove H1. Alternatively, the first guide shaft Z1 can be provided on the side wall of the first holding member 142 and the first guide groove C1 can be provided on the groove wall of the first sliding groove H1; or, the first guide shaft Z1 can be provided on the groove wall of the first sliding groove H1 and the first guide groove C1 can be provided on the side wall of the first holding member 142.

[0077] When it is necessary to lock the mounting bracket 120, the first slide block 141 slides in the first slide groove H1 in the first direction. Due to the structure of the first guide slide shaft Z1 passing through the first slide block 141 and extending into the first guide groove C1, the sliding of the first slide block 141 will drive the first guide slide shaft Z1 to slide relative to each other in the first guide groove C1. The first holding member 142 moves towards the second holding member 143 under the action of the first guide slide shaft Z1 until it forms a holding engagement with the second holding member 143.

[0078] When the mounting bracket 120 needs to be unlocked, the first slide block 141 slides in the first slide groove H1 in the direction of direction two. Similarly, due to the structure of the first guide slide shaft Z1 passing through the first slide block 141 and extending into the first guide groove C1, the sliding of the first slide block 141 will drive the first guide slide shaft Z1 to slide relative to each other in the first guide groove C1. Under the drive of the first guide slide shaft Z1, the first holding member 142 moves away from the second holding member 143 and gradually cancels the holding engagement with the second holding member 143.

[0079] This structural design has high motion accuracy and reliability, enabling the first clamping member 142 to move smoothly and accurately. At the same time, the setting of the first guide structure effectively restricts the degree of freedom of the first clamping member 142, making it only able to move in a predetermined direction, thereby improving the stability of the first locking structure 140.

[0080] In some embodiments, refer to Figure 6 and Figure 9 The first slide block 141 is provided with a slanted groove XC through which the first guide slide shaft Z1 passes, and the first guide slide shaft Z1 and the groove wall of the slanted groove XC form a contact fit.

[0081] The first guide groove C1 extends in the same direction as the first clamping member 142 moves, and the inclined groove XC extends at an angle to the first clamping member 142 moves.

[0082] In this embodiment, the inclined groove XC can be a long strip-shaped groove with an inner diameter slightly larger than the outer diameter of the first guide shaft Z1 to form an appropriate clearance fit, ensuring that the first guide shaft Z1 can slide freely in the inclined groove XC while maintaining a certain contact pressure, so that the two can carry out stable and reliable motion transmission.

[0083] Taking the example of a first guide shaft Z1 located on the side wall of the first holding member 142 and a first guide groove C1 located on the groove wall of the first sliding groove H1, the first guide shaft Z1 can be vertically installed on the side wall of the first holding member 142, perpendicular to the moving direction of the first holding member 142, and the first guide shaft Z1 passes through the inclined groove XC of the first slide block 141, forming a contact fit with the groove wall of the inclined groove XC. The first guide groove C1 is located on the groove wall of the first sliding groove H1, and its extending direction is the same as the moving direction of the first holding member 142. The shape and size of the first guide groove C1 match the first guide shaft Z1, and the first guide shaft Z1 extends into the first guide groove C1 after passing through the inclined groove XC of the first slide block 141.

[0084] When an external force drives the first slide block 141 to slide in the first slide groove H1 along a specific direction, the sliding of the first slide block 141 will cause the first guide slide shaft Z1 to slide relative to the first guide slide shaft Z1 in the inclined groove XC due to the contact engagement between the first guide slide shaft Z1 and the inclined groove XC on the first slide block 141. Since there is an angle between the extension direction of the inclined groove XC and the movement direction of the first holding member 142, the sliding of the first guide slide shaft Z1 in the inclined groove XC will generate a component force perpendicular to the sliding direction of the first slide block 141. This component force is transmitted to the first holding member 142 through the first guide slide shaft Z1, thereby driving the first holding member 142 to move in the same direction as the extension direction of the first guide groove C1 under the constraint of the first guide groove C1, that is, realizing the movement of the first holding member 142 toward or away from the second holding member 143. That is, when the first slide block 141 slides, the first holding member 142 can be driven to move toward or away from the second holding member 143 through the coordinated action of the first guide slide shaft Z1, the inclined groove XC and the first guide groove C1.

[0085] In some embodiments, the number of first guide structures is one set, and the set of first guide structures is located on one side of the first holding member 142; or,

[0086] like Figure 9 As shown, there are two sets of first guide structures. One set of first guide structures is located on one side of the first holding member 142, and the other set of first guide structures is located on the other side of the first holding member 142. The two sets of first guide structures are positioned opposite each other.

[0087] In this embodiment, the number of first guide structures can be set to one or two sets. When the number of first guide structures is one set, the first guide structure is set on one side of the first holding member 142 along its width direction, that is, the first guide structure is set on one side of the first holding member 142. The structure is relatively simple and can reduce the complexity and manufacturing cost of the first locking structure 140 while meeting the basic guiding requirements. When the number of first guide structures is two sets, the two sets of first guide structures are respectively set on both sides of the first holding member 142 along its width direction, that is, the first guide structure is set on both sides of the first holding member 142. Under this configuration, the two sets of first guide structures work together to more accurately restrict the degree of freedom of movement of the first holding member 142, so that it moves more smoothly and accurately toward or away from the second holding member 143 during the movement, which significantly improves the stability and guiding accuracy of the movement of the first holding member 142. Compared to a single-sided guide structure, a double-sided guide structure can effectively counteract possible lateral forces and imbalances, further improving the straightness and positional accuracy of the first clamping member 142, and ensuring stable and reliable clamping operation under various complex working conditions.

[0088] Optionally, such as Figure 8 and Figure 9 As shown, the first slide groove H1 has a latch KC on its groove wall. The latch KC engages with the first slide block 141 to prevent the first slide block 141 from disengaging from the first slide groove H1. Multiple latches KC can be used, and these latches KC are divided into two groups, located on opposite groove walls of the first slide groove H1. During assembly, the first slide block 141 is first aligned with the opening of the first slide groove H1, and then inserted into the first slide groove H1. During insertion, the first slide block 141 gradually compresses the latch KC, causing the latch KC to elastically deform and open outwards. When the first slide block 141 is fully inserted into the first slide groove H1, the latch KC, under its own elastic restoring force, tightly engages with the first slide block 141, thus achieving a reliable connection between the first slide block 141 and the first slide groove H1.

[0089] In some embodiments, refer to Figure 6 , Figure 9 and Figure 10 One of the first holding member 142 and the second holding member 143 is provided with a first holding tooth 11, and the other of the first holding member 142 and the second holding member 143 is provided with a first holding groove 12. The number of at least one of the first holding tooth 11 and the first holding groove 12 is multiple and they are arranged sequentially along the sliding direction of the first slide block 141.

[0090] The first locking tooth 11 is used to engage with the first locking slot 12 when the first locking member 142 moves toward the second locking member 143 so that the first locking member 142 and the second locking member 143 form a locking engagement, or to disengage from the first locking slot 12 when the first locking member 142 moves away from the second locking member 143 so that the locking engagement between the first locking member 142 and the second locking member 143 is canceled.

[0091] In this embodiment, the first holding member 142 and the second holding member 143 achieve holding by the structural cooperation of the first holding tooth 11 and the first holding groove 12. The first holding member 142 may be provided with the first holding tooth 11 and the second holding member 143 may be provided with the first holding groove 12; or the second holding member 143 may be provided with the first holding tooth 11 and the first holding member 142 may be provided with the first holding groove 12, depending on the actual needs.

[0092] As an example, the first retaining member 142 has a plurality of first retaining teeth 11 evenly distributed on the side facing the second retaining member 143. The first retaining teeth 11 are rectangular or trapezoidal in shape, have a certain length and thickness, and the tips of the teeth can be rounded to prevent stress concentration and damage to the retaining teeth or retaining grooves when engaging or disengaging from the first retaining grooves 12. Correspondingly, the second retaining member 143 has first retaining grooves 12 that match the first retaining teeth 11 on the side facing the first retaining member 142. The shape, size and spacing of the first retaining grooves 12 are adapted to the first retaining teeth 11 to ensure that the first retaining teeth 11 can smoothly engage and disengage from the first retaining grooves 12.

[0093] By setting multiple first locking teeth 11 and first locking slots 12 and arranging them sequentially along the sliding direction of the first sliding groove H1, the number of locking points is increased, thereby improving the reliability and stability of the locking engagement between the first locking member 142 and the second locking member 143. Furthermore, due to the presence of multiple first locking teeth 11 and first locking slots 12, when the mounting bracket 120 slides relative to the first support 110 to adjust its position, the first locking member 142 can be engaged in the first locking slot 12 through the corresponding first locking tooth 11 to form a locking engagement with the second locking member 143, thereby locking the mounting bracket 120.

[0094] In some embodiments, refer to Figure 11 The first slot 12 is an oblique slot, and the first tooth 11 is an oblique tooth that is adapted to the oblique slot.

[0095] The first slot 12 forms a stop on the first tooth 11 to restrict the first holding member 142 from sliding relative to the second holding member 143 in a first direction, and the first tooth 11 can exit the first slot 12 when the first holding member 142 slides relative to the second holding member 143 in a second direction, wherein the second direction is opposite to the first direction.

[0096] In this embodiment, when the first retaining member 142 is subjected to an external force along the first direction, the oblique retaining teeth will fit tightly against the inner wall of the oblique retaining groove. Due to the oblique design of the oblique retaining groove, the oblique retaining teeth cannot move in this direction, thereby effectively limiting the displacement of the first retaining member 142 relative to the second retaining member 143 and ensuring the stability of the connection. When the first retaining member 142 slides relative to the second retaining member 143 along the second direction, since the second direction is opposite to the first direction, the shape of the oblique retaining teeth and the oblique angle of the oblique retaining groove allow the oblique retaining teeth to gradually slide out of the oblique retaining groove as they move along the second direction, realizing the separation of the first retaining member 142 and the second retaining member 143. This separation process is relatively smooth and will not damage the retaining teeth and the groove.

[0097] Based on this, a corresponding oblique slot can be configured to stop the oblique locking teeth and allow for withdrawal, so that the headrest 130 can be adjusted forward and locked backward. For example, when the user needs to adjust the position of the headrest 130 forward, the mounting bracket 120 can be moved forward directly. At this time, the first locking member 142 slides relative to the second locking member 143 in the second direction as the mounting bracket 120 moves, so that the first locking tooth 11 exits from the first slot 12. That is, there is no need to unlock the mounting bracket 120, and the position of the headrest 130 can be adjusted forward directly. When the user leans against the headrest 130, a backward force is transmitted to the mounting bracket 120 to make the first locking member 142 slide relative to the second locking member 143 in the first direction. However, the first slot 12 stops the first locking member to ensure that the headrest 130 provides stable support for the user's head and / or neck.

[0098] However, if the user needs to adjust the headrest 130 backward, the first sliding seat must be slid to move the first retaining member 142 synchronously. During this process, the first retaining member 142 gradually moves away from the second retaining member 143, the retaining engagement between the two is canceled, and the mounting bracket 120 is unlocked, allowing the headrest 130 to be adjusted backward.

[0099] In some embodiments, refer to Figure 1 and Figure 3 The headrest assembly 100 further includes a first actuating structure 150 connected to the first slide 141, the first actuating structure 150 being used to drive the first slide 141 to slide. The user can control the sliding of the first slide 141 through the first actuating structure 150, thereby unlocking and locking the headrest 130 position adjustment function.

[0100] The first actuating mechanism 150 can be a manual mechanism, and the manual mechanism can take various forms, such as:

[0101] In some embodiments, refer to Figure 1 , Figure 3 and Figure 8 The first actuating structure 150 includes:

[0102] The first pull wire 151 is connected to the first slide block 141. As a flexible component for transmitting power, the first pull wire 151 can effectively transmit the pulling force from the first wired switch 152 to the first slide block 141, thereby driving the first slide block 141 to slide. The first pull wire 151 is usually made of a high-strength, flexible and wear-resistant material (such as steel wire rope) to ensure that it will not easily break or be damaged during long-term use.

[0103] A first wired switch 152 is disposed on the headrest 130 and connected to a first pull cord 151. The first wired switch 152 is used to pull the first pull cord 151 to drive the first slide block 141 to slide. Optionally, the first wired switch 152 is located on the rear side of the headrest 130, allowing the user to easily operate the first wired switch 152 to drive the first slide block 141 to slide by pulling the first pull cord 151. The first wired switch 152 can be designed in various forms, such as a button, rocker, toggle, or slider, etc. It has a comfortable operating feel, sensitive response, and can accurately control the pulling amplitude of the first pull cord 151, thereby achieving precise control of the sliding distance of the first slide block 141, and thus achieving precise control of unlocking the headrest 130 position adjustment function.

[0104] A reset element acts on the first slide block 141, providing a force to reset the first slide block 141. The reset element can be an elastic element such as a spring. When the user releases the first wired switch 152, the elastic force of the reset element causes the first slide block 141 to slide in the opposite direction, returning to its initial position or a preset locked position. For example, when a spring acts as the reset element, one end is connected to the first slide block 141, and the other end is fixed at an appropriate position on the mounting bracket 120 or the first support 110. When the first slide block 141 is pulled by the first pull cable 151 to unlock the mounting bracket 120, the first latching member 142 and the second latching member 143 release their latching engagement, and the spring is stretched or compressed, storing elastic potential energy. When the tension disappears, the spring releases its elastic potential energy, pushing the first slide block 141 to move in the opposite direction, causing the first latching member 142 to re-engage with the second latching member 143, thereby locking the mounting bracket 120 and ensuring the stability of the headrest 130 position.

[0105] In addition, the first actuating structure 150 can also be an electric structure, and the electric structure can take various forms, such as:

[0106] In an optional embodiment, the first actuating structure 150 can be an electric push rod, a linear motor, or a hydraulic drive device, etc. Taking an electric push rod as an example, it consists of a motor, a push rod, a controller, and a power supply. The free end of the push rod is connected to the first slide block 141, and the motor drives the push rod to extend and retract under the command of the controller. When the position of the headrest 130 needs to be adjusted, the controller receives an adjustment signal from the outside (such as when the user presses the headrest 130 adjustment button on the seat armrest), starts the motor to drive the push rod to extend and retract, thereby pushing the first slide block 141 to slide, thus unlocking or locking the headrest 130 position adjustment function.

[0107] In some embodiments, refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7The headrest assembly 100 also includes:

[0108] The second bracket 160 is slidably connected to the first bracket 110. The direction in which the first bracket 110 slides relative to the second bracket 160 is different from the direction in which the mounting bracket 120 slides relative to the first bracket 110.

[0109] The second locking structure 170 includes a second slide 171, a third retainer 172 and a fourth retainer 173. The second slide 171 is slidably disposed on one of the second bracket 160 and the first bracket 110. The fourth retainer 173 is disposed on the other of the second bracket 160 and the first bracket 110. The third retainer 172 is movably disposed on the second slide 171 and is linked to the second slide 171. The fourth retainer 173 is disposed opposite to the third retainer 172.

[0110] The third holding member 172 is driven to move toward the fourth holding member 173 by sliding the second sliding block 171 to form a holding engagement with the fourth holding member 173 to lock the first bracket 110, or the third holding member 172 is driven to move away from the fourth holding member 173 to cancel the holding engagement with the fourth holding member 173 to unlock the first bracket 110.

[0111] The second slide 171 is linked to the first slide 141. When one of the first slide 141 and the second slide 171 slides, it drives the other to slide synchronously.

[0112] The second bracket 160 can be a rod-shaped or columnar structure, used to mount the first bracket 110 and support the first bracket 110 for sliding. The first bracket 110 and the second bracket 160 are slidably connected, allowing for displacement relative to the second bracket 160 in a predetermined direction, thereby moving the headrest 130 to change its position and adjusting the position of the headrest 130. The predetermined direction can be vertical, and the sliding of the first bracket 110 relative to the second bracket 160 adjusts the height of the headrest 130 in the vertical direction. Optionally, the second bracket 160 has a sliding cavity, with the cavity opening located at the top of the second bracket 160. The first bracket 110 is inserted into the sliding cavity through the cavity opening to form a sliding engagement with the second bracket 160.

[0113] The second locking structure 170 is disposed between the second bracket 160 and the first bracket 110, and is used to lock or unlock the first bracket 110. In the locked state, the first bracket 110 remains fixed relative to the second bracket 160, while in the unlocked state, it can move freely relative to the second bracket 160. The second locking structure 170 consists of a second slide 171, a third retaining member 172, and a fourth retaining member 173. The second slide 171 and the third retaining member 172 and fourth retaining member 173 are respectively disposed on the first bracket 110 and the second bracket 160. Specifically, the second slide 171 can be disposed on the first bracket 110, and the fourth retaining member 173 on the second bracket 160; or, the second slide 171 can be disposed on the second bracket 160, and the fourth retaining member 173 on the first bracket 110, depending on actual requirements. The second slide 171 is slidable. For example, if the second slide 171 is mounted on the first bracket 110, it can be connected to the first bracket 110 through a structure such as a guide rail or a slide groove, so that the second slide 171 can slide linearly on the first bracket 110 and maintain good guidance during the sliding process to avoid deviation or jamming.

[0114] Since the third holding member 172 is located on the second slide 171 and is linked to the second slide 171, the third holding member 172 can move along with the second slide 171 when it slides. The linkage between the third holding member 172 and the second slide 171 can be achieved by a gear and rack structure or other suitable transmission structure, which will not be described in detail here. Specifically, the second slide 171 has two opposite sliding directions, namely direction three and direction four. When the second slide 171 slides towards direction three, it can drive the third retaining member 172 to move towards the fourth retaining member 173 to form a retaining engagement with the fourth retaining member 173, thereby locking the first bracket 110. At this time, the headrest 130 is in a fixed height position, which can provide stable and reliable support for the user's head and / or neck. When the second slide 171 slides towards direction four, it can drive the third retaining member 172 to move away from the fourth retaining member 173 to cancel the retaining engagement with the fourth retaining member 173, thereby unlocking the first bracket 110. In this way, the first bracket 110 can slide freely relative to the second bracket 160, realizing the adjustment of the height position of the headrest 130.

[0115] The specific working process of the headrest assembly 100 in this embodiment is as follows:

[0116] When the user needs to adjust the height of the headrest 130, force is first applied to the second slide 171, causing it to slide on its corresponding first support 110 or second support 160. For example, if the second slide 171 is on the first support 110, an external force pushes it to move in direction four. Due to the linkage between the third retaining member 172 and the second slide 171, the sliding of the second slide 171 will cause the third retaining member 172 to move synchronously. During this process, the third retaining member 172 gradually moves away from the fourth retaining member 173, and the retaining engagement between them is canceled, thereby unlocking the first support 110. At this time, the first support 110 can slide freely relative to the second support 160. The user can slide the first support 110 to a suitable position according to their needs, so that the headrest 130 is at a more comfortable height.

[0117] Once the first support 110 reaches the desired position, the external force on the second slide 171 is released. Under the action of some elastic reset elements or other mechanical structures, the second slide 171 will slide in the third direction, causing the third retaining member 172 to move towards the fourth retaining member 173. The third retaining member 172 and the fourth retaining member 173 re-establish a retaining engagement, locking the first support 110 in its current position. The headrest 130 is also fixed accordingly, ensuring that the headrest 130 will not move arbitrarily during subsequent use, providing stable and reliable support for the user's head and / or neck.

[0118] Among them, such as Figure 7 As shown, the third holding member 172 and the fourth holding member 173 can also be held together by setting the second tooth 21 and the second slot 22. The specific structure can be designed with reference to the first tooth 11 and the first slot 12 between the first holding member 142 and the second holding member 143, including but not limited to this, which will not be described in detail here.

[0119] With the cooperation of the third retaining member 172 and the fourth retaining member 173, the first bracket 110 is securely locked on the second bracket 160, so that the headrest 130 has a stable support position. When the user leans against the headrest 130, even if the pressure applied to the headrest 130 is too great, the headrest 130 is not easy to shift and always maintains support for the user's head and / or neck in its original position, which helps to improve the user experience.

[0120] The second slide 171 is linked to the first slide 141, meaning that when one slides, the other slides synchronously. This linkage design allows the user to unlock or lock one slide at the same time, enabling simultaneous unlocking or locking of the headrest 130 in two different directions with a single button operation. This improves adjustment efficiency and ensures the coordination and integrity of the headrest 130 when adjusted in different directions.

[0121] In some embodiments, refer to Figure 1 and Figure 3 The headrest assembly 100 also includes:

[0122] The first actuating structure 150 is connected to the first slide block 141, and the first actuating structure 150 is used to drive the first slide block 141 to slide; or...

[0123] The second actuating structure is connected to the second slide block 171 and is used to drive the second slide block 171 to slide.

[0124] In this embodiment, the headrest assembly 100 is designed with either a first actuating structure 150 or a second actuating structure. When the first actuating structure 150 is present, it is connected to the first slide block 141 and is used to drive the first slide block 141 to slide. The structure of the first actuating structure 150 is the same as that of the first actuating structure 150 in the previous embodiment, and will not be described in detail here. The user can drive the first slide block 141 to slide through the first actuating structure 150, and simultaneously drive the second slide block 171 to slide, so as to realize the synchronous unlocking or locking of the headrest 130 in different directions of position adjustment.

[0125] When a second actuating structure is present, it is connected to the second slide 171 and is used to drive the second slide 171 to slide. The structure of the second actuating structure can be designed with reference to the first actuating structure 150 in the aforementioned embodiment. Alternatively, it can be a combination of a gear and rack mechanism and a manual knob. By manually rotating the knob, the rotational motion is converted into linear motion of the second slide 171 through the transmission of the gear and rack, thereby driving the engagement or disengagement of the third retaining member 172 and the fourth retaining member 173, realizing the locking and unlocking of the first bracket 110 relative to the second bracket 160. The above is only an example and is not restrictive. The user can drive the second slide 171 to slide through the provided second actuating structure, and drive the first slide 141 to slide synchronously, so as to realize the synchronous unlocking or locking of the headrest 130 in different directions of position adjustment.

[0126] In some embodiments, refer to Figure 6 and Figure 10The headrest assembly 100 also includes a linkage rod 180, which is disposed in the first bracket 110. One end of the linkage rod 180 is connected to the first slide 141, and the other end of the linkage rod 180 is connected to the second slide 171. When one of the first slide 141 and the second slide 171 slides, the other slides synchronously through the linkage rod 180.

[0127] In this embodiment, the first bracket 110 is hollow, and the linkage rod 180 is housed inside the first bracket 110 and connected to the first slide 141 and the second slide 171 respectively. The connection method may include hinges, etc., and is not limited here. The installation position of the linkage rod 180 inside the first bracket 110 can be precisely designed to ensure that it does not interfere with other components inside the first bracket 110 during movement. Simultaneously, the linkage rod 180 itself can have sufficient strength and rigidity to accurately transmit force and movement, ensuring the linkage accuracy between the first slide 141 and the second slide 171.

[0128] When the user unlocks the headrest 130 position adjustment function, an external force is applied to the first slide 141 to make it slide. The first slide 141 drives the second slide 171 to slide synchronously through the linkage rod 180. This achieves the unlocking or locking of the mounting bracket 120 and the first bracket 110, while the first bracket 110 and the second bracket 160 also perform corresponding unlocking or locking operations. This ensures that when the headrest 130 unlocks or locks the front and rear position adjustment function, the up and down position adjustment function is also unlocked simultaneously. For example, the mounting bracket 120 is provided with a first sliding groove H1, and the first sliding block 141 is located in the first sliding groove H1. When an external force is applied to the first sliding block 141 to make it slide in the second direction (such as forward), the first holding member 142 moves away from the second holding member 143 to cancel the holding engagement, so as to realize the unlocking between the mounting bracket 120 and the first bracket 110. The first holding member 142 is provided with a sliding groove to accommodate one end of the linkage rod 180 and to form a linkage connection between the linkage rod 180 and the first holding member 142. Thus, during the sliding of the first sliding block 141, the first holding member 142 moves away from the second holding member 143, the linkage rod 180 is lifted, and the second sliding block 171 slides in the fourth direction (such as upward), so that the third holding member 172 moves away from the fourth holding member 173 to cancel the holding engagement, thereby realizing synchronous unlocking. This embodiment effectively solves the problem of sliding block linkage during multi-directional adjustment, unlocking, and locking by using the linkage rod 180, thus improving the smoothness, accuracy, and stability of the headrest 130 position adjustment, unlocking, and locking process. Of course, besides the structure of the linkage rod 180, other linkage structures, such as linkage ropes, can also be used between the second sliding block 171 and the first sliding block 141 in other embodiments.

[0129] This utility model embodiment also proposes a seat, which includes a seat body and a headrest assembly 100 as described in the foregoing embodiments, the headrest assembly 100 being disposed on the seat body. The specific structure of the headrest assembly 100 is as described in the above embodiments. Since this seat adopts all the technical solutions of all the above embodiments, it has at least all the technical effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0130] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A headrest assembly, characterized in that, include: First support; The mounting bracket is slidably connected to the first bracket; The headrest is connected to the mounting bracket; The first locking structure includes a first slide block, a first retaining member, and a second retaining member. The first slide block is slidably disposed on one of the first bracket and the mounting bracket. The second retaining member is disposed on the other of the first bracket and the mounting bracket. The first retaining member is movably disposed on the first slide block and is linked to the first slide block. The second retaining member is disposed opposite to the first retaining member. Specifically, by sliding the first slide block, the first holding member is driven to move toward the second holding member to form a holding engagement with the second holding member to lock the mounting bracket, or the first holding member is driven to move away from the second holding member to cancel the holding engagement with the second holding member to unlock the mounting bracket.

2. The headrest assembly according to claim 1, characterized in that, The first bracket or the mounting bracket is provided with a first sliding groove, and the first slide block is located in the first sliding groove and can slide relative to the first sliding groove; A first guide structure is provided between the first holding member and the first sliding groove. The first guide structure includes a first guide shaft and a first guide groove. The first guide shaft is disposed on one of the side wall of the first holding member and the groove wall of the first sliding groove, and the first guide groove is disposed on the other of the side wall of the first holding member and the groove wall of the first sliding groove. The first guide shaft passes through the first sliding block and extends into the first guide groove. Wherein, the first guide slide shaft slides relative to the first guide groove when the first slide block slides, so as to drive the first holding member to move toward or away from the second holding member.

3. The headrest assembly according to claim 2, characterized in that, The first slide block is provided with an inclined groove through which the first guide slide shaft passes, and the first guide slide shaft forms a contact fit with the groove wall of the inclined groove; Wherein, the extension direction of the first guide groove is the same as the movement direction of the first clamping member, and the extension direction of the inclined groove has an angle with the movement direction of the first clamping member.

4. The headrest assembly according to claim 2, characterized in that, The number of the first guide structures is one set, and one set of the first guide structures is located on one side of the first holding member; or, The number of the first guide structures is two sets. One set of the first guide structures is located on one side of the first clamping member, and the other set of the first guide structures is located on the other side of the first clamping member. The two sets of the first guide structures are positioned opposite each other.

5. The headrest assembly according to any one of claims 1 to 4, characterized in that, One of the first and second holding members is provided with a first holding tooth, and the other of the first and second holding members is provided with a first holding groove. The number of at least one of the first holding teeth and the first holding groove is multiple and they are arranged sequentially along the sliding direction of the first slide. The first locking tooth is used to engage with the first locking slot when the first locking member moves toward the second locking member so that the first locking member and the second locking member form a locking engagement, or to disengage from the first locking slot when the first locking member moves away from the second locking member so that the locking engagement between the first locking member and the second locking member is canceled.

6. The headrest assembly according to claim 5, characterized in that, The first slot is an oblique slot, and the first tooth is an oblique tooth adapted to the oblique slot. The first slot forms a stop on the first tooth to restrict the first holding member from sliding relative to the second holding member in a first direction, and the first tooth can exit the first slot when the first holding member slides relative to the second holding member in a second direction, wherein the second direction is opposite to the first direction.

7. The headrest assembly according to any one of claims 1 to 4, characterized in that, Also includes: A first actuating structure is connected to the first slide block, and the first actuating structure is used to drive the first slide block to slide.

8. The headrest assembly according to claim 7, characterized in that, The first actuating structure includes: The first pull wire is connected to the first slide block; A first wired switch is disposed on the headrest and connected to the first pull cord. The first wired switch is used to pull the first pull cord to drive the first slide block to slide. A reset element acts on the first slide block, and the reset element is used to provide a force to reset the first slide block.

9. The headrest assembly according to any one of claims 1 to 4, characterized in that, Also includes: The second bracket is slidably connected to the first bracket, and the direction in which the first bracket slides relative to the second bracket is different from the direction in which the mounting bracket slides relative to the first bracket. The second locking structure includes a second slide, a third retainer and a fourth retainer. The second slide is slidably disposed on one of the second bracket and the first bracket. The fourth retainer is disposed on the other of the second bracket and the first bracket. The third retainer is movably disposed on the second slide and is linked to the second slide. The fourth retainer and the third retainer are disposed opposite to each other. Wherein, by sliding the second slide block, the third holding member is driven to move toward the fourth holding member to form a holding engagement with the fourth holding member to lock the first bracket, or the third holding member is driven to move away from the fourth holding member to cancel the holding engagement with the fourth holding member to unlock the first bracket; The second slide is linked to the first slide, and when one of the first slide and the second slide slides, it drives the other slides synchronously.

10. The headrest assembly according to claim 9, characterized in that, Also includes: A first actuating structure is connected to the first slide block, and the first actuating structure is used to drive the first slide block to slide. or, The second actuating structure is connected to the second slide block, and the second actuating structure is used to drive the second slide block to slide.

11. The headrest assembly according to claim 9, characterized in that, Also includes: A linkage rod is provided inside the first bracket. One end of the linkage rod is connected to the first slide block, and the other end of the linkage rod is connected to the second slide block. When one of the first slide block and the second slide block slides, the other slides synchronously through the linkage rod.

12. A type of seat, characterized in that, It includes a seat body and a headrest assembly as described in any one of claims 1 to 11, the headrest assembly being disposed on the seat body.

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