Headrest assembly and seat

Abstract

The utility model discloses a headrest assembly which comprises a supporting piece and a headrest. The sliding rod is in sliding connection with the supporting piece; the headrest is located on the front side of the sliding rod and connected with the sliding rod; the sliding rod can slide up and down on the supporting piece and be locked so as to adjust the height of the headrest. Wherein at least one of the sliding rod and the supporting piece is provided with a stop structure, and the stop structure is used for limiting the sliding rod in the locking state to slide on the supporting piece when the headrest is subjected to leaning acting force. According to the headrest assembly, the sliding rod can slide up and down on the supporting piece by controlling the headrest so as to adjust the height of the headrest. After the sliding rod is adjusted to the needed height, the sliding rod is locked on the supporting piece, when a user leans on the headrest to lean backwards, the headrest bears the leaning acting force of the head and / or the neck of the user, the locking structure can limit the sliding rod in the locked state from sliding on the supporting piece, and then the situation that the headrest shifts is prevented. The headrest can keep supporting the head and / or the neck of a user at the position of the needed height, and the use experience can be improved.

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 the related technology of the seat, the headrest assembly has a height adjustment function. When adjusted to the required height, it is positioned by the engagement of the buckle structure and the slot, so that the headrest is at the required height.

[0004] To facilitate headrest height adjustment, the adjustment force is typically set to be small. For example, when adjusting the headrest, users can easily disengage the latch mechanism from the slot by manipulating the headrest and the sliding rod connected to it, thus adjusting the height. However, because of this, when leaning back against the headrest, the force applied can easily cause the sliding rod to slide the headrest down, resulting in headrest displacement. This affects support for the user's head and / or neck, leading to a poor user experience. Utility Model Content

[0005] The main purpose of this utility model is to propose a headrest assembly, which aims to solve, to a certain extent, the technical problem in related technologies where the headrest is prone to displacement during the process of a user leaning back.

[0006] To achieve the above objectives, this utility model proposes a headrest assembly, which includes:

[0007] Support components;

[0008] The slide rod is slidably connected to the support member;

[0009] A headrest is located in front of and connected to the slide rod;

[0010] The slide bar can slide up and down relative to the support member and lock to adjust the height of the headrest;

[0011] At least one of the sliding rod and the support member is provided with a stop structure, which is used to restrict the sliding rod in the locked state from sliding on the support member when the headrest is subjected to a leaning force.

[0012] In some embodiments, the support member is provided with a sliding cavity, and the slide rod is inserted into the sliding cavity to be slidably connected with the support member.

[0013] In some embodiments, the stop structure includes:

[0014] A stop is provided on one of the outer wall of the slide rod and the inner wall of the slide cavity. When the headrest is subjected to a leaning force, the stop engages with the other of the outer wall of the slide rod and the inner wall of the slide cavity to restrict the slide rod in the locked state from sliding on the support.

[0015] In some embodiments, the stop member is used to abut against the outer wall of the slide rod or the inner wall of the slide cavity to form the stop engagement.

[0016] In some embodiments, the outer wall of the slide rod or the inner wall of the slide cavity is provided with a plurality of grooves, and the plurality of grooves are arranged sequentially along the sliding direction of the slide rod;

[0017] The stop is used to extend into at least one of the plurality of grooves to form the stop fit.

[0018] In some embodiments, the stop is an elastic element.

[0019] In some embodiments, the elastic element is an elastic silicone block; or,

[0020] The elastic element is an elastic sheet, which has at least one protrusion. The elastic sheet forms a stop fit with the outer wall of the slide rod or the inner wall of the slide cavity through the protrusion.

[0021] In some embodiments, an elastic buckle is provided on one of the outer wall of the slide rod and the inner wall of the slide cavity, and a plurality of slots are provided on the other of the outer wall of the slide rod and the inner wall of the slide cavity. The plurality of slots are arranged sequentially along the sliding direction of the slide rod, and the elastic buckle is used to engage with the slots to lock the slide rod.

[0022] In some embodiments, the stop structure is located in the rearward direction of the slide rod along the front-back direction of the headrest; and / or,

[0023] The support member has an opening that communicates with the sliding cavity, and the stop structure is located at the opening.

[0024] In some embodiments, the outer wall of the slide rod is provided with an elastic anti-detachment member, and the inner wall of the slide cavity is provided with an anti-detachment groove. The elastic anti-detachment member can be used to lock into the anti-detachment groove when the slide rod slides up to the limit position in the slide cavity to prevent the slide rod from leaving the slide cavity.

[0025] The outer wall of the support member is provided with a clearance hole that communicates with the anti-detachment groove. The clearance hole is used to allow a tool to be inserted to push the elastic anti-detachment member out of the anti-detachment groove.

[0026] This utility model also proposes a seat, which includes a seat body, a backrest support disposed on the seat body, and a headrest assembly as described above, wherein the support member is connected to the backrest support.

[0027] In this headrest assembly, the height of the headrest can be adjusted by sliding a slider up and down on the support member. After adjusting to the desired height, the slider locks on the support member. When the user leans back against the headrest, the headrest is supported by the force of the user's head and / or neck. The stop structure restricts the slider from sliding on the support member in the locked state, thereby preventing the headrest from shifting. This ensures that the headrest can maintain support for the user's head and / or neck at the desired height, thus improving the user experience. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the headrest assembly in one embodiment of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of a portion of the headrest assembly in the embodiment;

[0030] Figure 3 for Figure 2 A schematic diagram of the internal structure of a portion of the headrest assembly in the embodiment;

[0031] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0032] Figure 5 for Figure 1 A schematic diagram of a portion of the headrest assembly in the embodiment;

[0033] Figure 6 for Figure 1 A structural schematic diagram of another part of the headrest assembly in the embodiment;

[0034] Figure 7 This is a schematic diagram of the headrest assembly in another embodiment of the present invention;

[0035] Figure 8 for Figure 7 A cross-sectional view of the headrest assembly along the BB direction in the embodiment;

[0036] Figure 9 for Figure 8 Enlarged view of point C in the middle;

[0037] Figure 10This is a schematic diagram of the headrest assembly in another embodiment of the present invention;

[0038] Figure 11 for Figure 10 A cross-sectional view of the headrest assembly along the DD direction in the embodiment;

[0039] Figure 12 for Figure 11 Enlarged view at point E in the middle;

[0040] Figure 13 This is a schematic diagram of the headrest assembly in another embodiment of the present invention;

[0041] Figure 14 for Figure 13 A schematic diagram of the slide bar of the headrest assembly in the embodiment;

[0042] Figure 15 This is a structural schematic diagram of the seat in one embodiment of the present invention. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] This utility model embodiment proposes 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 lumbar region. When the headrest assembly 100 is used in a seat, as... Figure 1 As shown, the headrest assembly 100 can be mounted on the backrest or on the backrest bracket 300 used to support the backrest to provide support for the user's head and / or neck.

[0048] Reference Figures 1 to 4 The headrest assembly 100 includes:

[0049] Support component 110;

[0050] The slide rod 120 is slidably connected to the support member 110;

[0051] The headrest 130 is located in front of the slide bar 120 and is connected to the slide bar 120;

[0052] The slide bar 120 can slide up and down relative to the support member 110 and lock to adjust the height of the headrest 130;

[0053] At least one of the slide bar 120 and the support member 110 is provided with a stop structure 140, which is used to restrict the slide bar 120, which is in a locked state, from sliding on the support member 110 when the headrest 130 is subjected to a leaning force.

[0054] In the headrest assembly 100 involved in this embodiment, the support member 110 serves as the structural foundation of the headrest assembly 100, providing stable support for the installation and movement of other components. The support member 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.

[0055] The slide rod 120 is slidably connected to the support member 110, allowing it to move vertically relative to the support member 110. This movement of the headrest 130 changes its position, thus adjusting its height. The slide rod 120 and the support member 110 can have an insert-in structure, for example, the support member 110 may have a cavity into which the slide rod 120 is slidably inserted. Alternatively, the slide rod 120 and the support member 110 can have a sleeve-in structure, for example, the slide rod 120 may be hollow, with the support member 110 extending into it, and the slide rod 120 slidably sleeved on the support member 110.

[0056] The headrest 130 is located in front of the slide bar 120 and is connected to the slide bar 120. The connection between the two can be direct or indirect through other components; this embodiment does not impose any limitations on this. The headrest 130 is used for the user's head and / or neck to lean against, providing comfortable support. The headrest 130 is typically made of a soft and elastic material (such as memory foam), and its shape is designed according to ergonomic principles, effectively relieving neck fatigue and pressure. Optionally, the headrest 130 is rotatably mounted on the slide bar 120, allowing the headrest 130 to adaptively adjust its support position according to the user's head and / or neck position when the user leans against it.

[0057] The slide rod 120 can slide up and down relative to the support member 110 and locks after driving the headrest 130 to the preset height, thereby adjusting the height of the headrest 130. The adjustment structure can be provided with multiple slots or positioning holes on the support member 110, and the slide rod 120 is correspondingly equipped with a retractable locking pin or elastic block. When the height of the headrest 130 needs to be adjusted, a certain external force is applied to disengage the locking pin or block from the slot or positioning hole. Then, the slide rod 120 is slid to the desired height position. Under the action of elastic restoring force or other structures, the locking pin or block re-engages into the corresponding slot or positioning hole, thereby locking the slide rod 120 on the support member 110 to fix the height of the headrest 130.

[0058] At least one of the slide rod 120 and the support member 110 is provided with a stop structure 140. That is, the stop structure 140 can be provided on the slide rod 120, or on the support member 110, or both the slide rod 120 and the support member 110 can be provided with stop structures 140, depending on actual needs. When the user's head and / or neck rests against the headrest 130, so that the headrest 130 is subjected to a backward leaning force, the stop structure 140 can restrict the slide rod 120, which is in a locked state, from sliding on the support member 110. The stop structure 140 can take various forms, such as a stop block or an elastic stop plate, and can be set on one of the support member 110 and the slide rod 120. When the headrest 130 is subjected to a backward leaning force, even if the slide rod 120 is locked, it still tends to slide downward under the action of the leaning force. At this time, the stop block or elastic stop plate is pressed against the surface of the other of the support member 110 and the slide rod 120 and a frictional action is formed. The frictional force is greater than the downward force, which can effectively prevent the slide rod 120 from sliding in the locked state. In addition, the stop structure 140 can also be an electrically driven stop structure. For example, the stop structure 140 includes a stop block and a drive member for driving the stop block to extend and retract, and can be disposed on one of the support member 110 and the slide rod 120. The headrest 130 is equipped with a pressure detection device. When the pressure detection device detects that the headrest 130 is subjected to a leaning force, it sends a corresponding detection signal to the main control system. The main control system sends a control signal to the drive member, which drives the stop block to extend so as to press against the surface of the other of the support member 110 and the slide rod 120 and form a frictional action. The frictional force is greater than the sliding force, which can effectively prevent the slide rod 120 from sliding in the locked state. When the leaning force on the headrest 130 is removed, the drive member drives the stop block to retract to reset.

[0059] In the headrest assembly 100 of this utility model, the height of the headrest 130 can be adjusted by sliding the slider 120 up and down on the support member 110. After adjusting to the desired height, the slider 120 locks on the support member 110. When the user leans back against the headrest 130, the headrest 130 is supported by the user's head and / or neck. The stop structure 140 can restrict the slider 120 in the locked state from sliding on the support member 110, thereby preventing the headrest 130 from shifting. This allows the headrest 130 to maintain support for the user's head and / or neck at the desired height, which helps to improve the user experience.

[0060] In some embodiments, refer to Figure 4 and Figure 5The support member 110 is provided with a sliding cavity 110Q, and the slide rod 120 is inserted into the sliding cavity 110Q to slide in connection with the support member 110. The shape and size of the sliding cavity 110Q of the support member 110 are precisely machined according to the shape of the slide rod 120, and the two have a high degree of adaptability to ensure that the slide rod 120 can be smoothly inserted and slid in it. Specifically, the top end of the support member 110 is constructed with a cavity opening 110K that communicates with the sliding cavity 110Q. The cavity opening 110K is adapted to the outer contour of the slide rod 120. The slide rod 120 is inserted into the sliding cavity 110Q through the cavity opening 110K. When the slide rod 120 is inserted into the sliding cavity 110Q, it forms a sliding fit with the sliding cavity 110Q so that it can slide along the sliding cavity 110Q.

[0061] In some embodiments, refer to Figure 4 , Figures 7 to 9 The stop structure 140 includes:

[0062] The stop 141 is provided on one of the outer wall of the slide rod 120 and the inner wall of the slide cavity 110Q. When the headrest 130 is subjected to a leaning force, the stop 141 forms a stop engagement with the other of the outer wall of the slide rod 120 and the inner wall of the slide cavity 110Q to restrict the slide rod 120 in the locked state from sliding on the support member 110.

[0063] The stopping structure 140 employs a stop element 141. The stop element 141 can be located on the outer wall of the slide rod 120 or on the inner wall of the slide cavity 110Q, depending on actual requirements. For example, when the stop element 141 is located on the outer wall of the slide rod 120, it can be a protruding block structure, etc.; when the stop element 141 is located on the inner wall of the slide cavity 110Q, it can be an elastic protrusion, etc. The stop element 141 can be installed in various ways, such as by bonding, embedding, or snap-fitting, onto the corresponding wall surface. The specific installation method can be selected according to the type of stop element 141.

[0064] When the headrest 130 is subjected to a leaning force, the slide rod 120 will tend to slide downward relative to the support member 110. If the stop member 141 is on the outer wall of the slide rod 120, with the slight displacement of the slide rod 120, the stop member 141 will come into close contact with the inner wall of the slide cavity 110Q. Due to the special shape of the stop member 141 (such as the blocking effect of a block shape) or its high frictional characteristics (such as the friction between the block structure and the inner wall of the slide cavity 110Q), a stop fit is formed, preventing the slide rod 120 from sliding further. However, if the stop member 141 is provided on the inner wall of the slide cavity 110Q, for example, as an elastic protrusion, when the slide rod 120 has a downward sliding tendency, the outer wall of the slide rod 120 will squeeze the elastic protrusion. The reaction force generated by the elastic protrusion and the frictional force between it and the outer wall of the slide rod 120 will limit the sliding of the slide rod 120, thereby effectively limiting the sliding of the slide rod 120 in the locked state on the support member 110 and ensuring the stability of the headrest 130 during use.

[0065] The stop 141 and the outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q can form a stop fit in various ways, such as:

[0066] In some embodiments, refer to Figure 4 , Figures 10 to 12 The stop 141 is used to abut against the outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q to form a stop fit. Specifically, when the stop 141 is provided on the outer wall of the slide rod 120, the stop 141 abuts against the inner wall of the slide cavity 110Q to form a stop fit, thereby preventing the slide rod 120 from sliding on the support member 110; when the stop 141 is provided on the inner wall of the slide cavity 110Q, the stop 141 abuts against the outer wall of the slide rod 120 to form a stop fit, thereby preventing the slide rod 120 from sliding on the support member 110.

[0067] That is, the stop 141 is designed to abut against the wall to form a stop fit, which is simple in structure and stable in fit. Specifically, when the headrest 130 is subjected to the force of the user's head and / or neck, the force is transmitted to the slide rod 120, which will cause the slide rod 120 to slide downward relative to the support member 110. The stop 141 then gradually abuts against the wall and generates a large frictional force, preventing the slide rod 120 from sliding and achieving a reliable stop fit.

[0068] In some other embodiments, reference is made to Figure 8 and Figure 9 The outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q is provided with a plurality of grooves 142, and the plurality of grooves 142 are arranged sequentially along the sliding direction of the slide rod 120;

[0069] The stop 141 is used to extend into at least one of the plurality of grooves 142 to form a stop fit.

[0070] Specifically, when the stop 141 is located on the outer wall of the slide rod 120, the inner wall of the slide cavity 110Q is provided with multiple grooves 142. The stop 141 extends into the grooves 142 on the inner wall of the slide cavity 110Q to form a stop fit, thereby preventing the slide rod 120 from sliding on the support member 110. When the stop 141 is located on the inner wall of the slide cavity 110Q, the outer wall of the slide rod 120 is provided with multiple grooves 142. The stop 141 extends into the grooves 142 on the outer wall of the slide rod 120 to form a stop fit, thereby preventing the slide rod 120 from sliding on the support member 110. The multiple grooves 142 are arranged sequentially along the sliding direction of the slide rod 120.

[0071] That is, the stop 141 adopts a form of concave-convex fit with the wall surface to form a stop fit, which is stable. Specifically, when the headrest 130 is subjected to the force of the user's head and / or neck, the force is transmitted to the slide rod 120, which will cause the slide rod 120 to slide downward relative to the support member 110. The stop 141 then extends into the groove 142 that is aligned with it to form a stop fit, preventing the slide rod 120 from sliding and achieving a stable stop fit.

[0072] According to the actual structural requirements, the stop 141 can be designed so that it can cooperate with at least one groove 142 when stopping the slide bar 120. That is, the stop 141 can cooperate with one groove 142, or it can cooperate with several grooves 142 at the same time.

[0073] In some embodiments, the stop 141 is an elastic element. The use of an elastic element in the stop 141 avoids severe friction and collision caused by hard contact during the relative movement between the slide bar 120 and the support member 110. Compared to a rigid stop structure 140, an elastic element can reduce wear between components to a certain extent. For example, when the slide bar 120 tends to slide, the elastic element will first undergo elastic deformation, rather than directly generating rigid collision and friction as the rigid stop 141 would.

[0074] The elastic element can take various structural forms. Taking the stop 141 using an elastic metal sheet as an example, during long-term use, the elastic deformation of the metal sheet can absorb part of the impact force, reducing wear on the outer wall of the slide rod 120 and the inner wall of the slide cavity 110Q. Furthermore, the elastic recovery characteristics of the metal sheet itself allow it to maintain a certain stopping function after multiple deformations, extending the service life of the stop structure 140 and reducing the maintenance cost of the headrest assembly 100. The elastic element used in the stop 141 can be directly pressed against a wall surface (such as the outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q) to stop the slide rod 120 in a locked state; or it can be engaged with a groove 142 provided on the wall surface (such as the outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q) to stop the slide rod 120 in a locked state.

[0075] In some embodiments, refer to Figures 3 to 5 The elastic element is an elastic silicone block 1411; or,

[0076] Reference Figure 9 and Figure 12 The elastic element is an elastic sheet 1412, which has at least one protrusion 1412B. The elastic sheet 1412 forms a stop fit with the outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q through the protrusion 1412B.

[0077] In this embodiment, the elastic element can be an elastic silicone block 1411, which can be rectangular in shape. Its material has a high coefficient of friction and a certain elastic deformation capacity. When the elastic silicone block 1411 is located on the outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q, it protrudes from the wall surface to effectively abut when stopping is required. Taking the elastic silicone block 1411 located on the inner wall of the slide cavity 110Q as an example, the inner wall of the slide cavity 110Q is provided with a mounting groove that matches the outer contour of the elastic silicone block 1411. The elastic silicone block 1411 can be glued and fixed in the mounting groove and protrudes from the inner wall of the slide cavity 110Q. When the slide rod 120 has a downward sliding tendency relative to the support member 110, the elastic silicone block 1411 on the inner wall of the slide cavity 110Q will contact and be compressed against the outer wall of the slide rod 120. Due to the good elasticity of the silicone material, the elastic silicone block 1411 will undergo elastic deformation, generating an elastic restoring force opposite to the direction of compression. At the same time, the friction between the elastic silicone block 1411 and the outer wall of the slide bar 120 will also increase due to compression. The combined effect of these two factors can effectively prevent the slide bar 120 from sliding, ensuring the stability of the headrest 130 during use.

[0078] In this embodiment, the elastic element can also be an elastic sheet 1412. The elastic sheet 1412 can be made of a metal material with high elastic modulus and good wear resistance, such as spring steel or stainless steel sheet. The shape of the elastic sheet 1412 is set according to the shape of the outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q, and its thickness can be between 0.5mm and 1.5mm to ensure sufficient elasticity and strength. At least one protrusion 1412B is constructed on the elastic sheet 1412. The shape of the protrusion 1412B can be hemispherical, triangular, or trapezoidal, etc., and its height is optimized according to the gap between the slide rod 120 and the support member 110 and the force required for stopping, and can be between 1mm and 3mm. When the elastic sheet 1412 is installed on the outer wall of the slide rod 120, it is firmly attached to the slide rod 120 by means of welding, riveting or fixing with a slot, so that the protrusion 1412B protrudes towards the inner wall of the slide cavity 110Q; if it is installed on the inner wall of the slide cavity 110Q, it is fixed by means of a corresponding mounting seat, slot or adhesive, so that the protrusion 1412B faces the outer wall of the slide rod 120.

[0079] Under normal conditions, the protrusion 1412B of the elastic piece 1412 maintains a certain gap or forms light contact with the outer wall of the slide rod 120 or the inner wall of the slide cavity 110Q to ensure that the slide rod 120 can slide smoothly to adjust the height of the headrest 130. However, when the slide rod 120 is subjected to external force, such as when the headrest 130 tends to shift due to the driver's or passenger's head leaning against it, the slide rod 120 will tend to slide relative to the support member 110. Taking the elastic plate 1412 installed on the inner wall of the slide cavity 110Q as an example, when the slide rod 120 is subjected to external force, such as when the head of the driver or passenger leans against it or when the vehicle bumps and causes the headrest 130 to have a tendency to shift, the slide rod 120 will have a downward sliding tendency relative to the support member 110. The outer wall of the slide rod 120 presses the protrusion 1412B of the elastic plate 1412, which will also cause the protrusion 1412B to undergo elastic deformation, thereby generating a reaction force and friction force to prevent the slide rod 120 from sliding, achieving a reliable stop fit and ensuring the high stability of the headrest 130 during use.

[0080] In some embodiments, refer to Figures 4 to 6 , Figure 12 An elastic buckle 10 is provided on one of the outer wall of the slide rod 120 and the inner wall of the slide cavity 110Q, and a plurality of slots 20 are provided on the other of the outer wall of the slide rod 120 and the inner wall of the slide cavity 110Q. The plurality of slots 20 are arranged sequentially along the sliding direction of the slide rod 120. The elastic buckle 10 is used to engage with the slots 20 to lock the slide rod 120.

[0081] In this embodiment, the outer wall of the slide rod 120 may be provided with an elastic buckle 10, and the inner wall of the slide cavity 110Q may be provided with a plurality of slots 20; or, the inner wall of the slide cavity 110Q may be provided with an elastic buckle 10, and the outer wall of the slide rod 120 may be provided with a plurality of slots 20, which can be set according to actual needs.

[0082] Taking the elastic buckle 10 disposed on the inner wall of the slide cavity 110Q as an example, the elastic buckle 10 can be a protruding elastic metal sheet or an elastic pin structure, which is fixed to a specific position on the inner wall of the slide cavity 110Q by means of riveting, welding or integral molding. The slot 20 is disposed on the outer wall of the slide rod 120, and is evenly distributed sequentially along the sliding direction of the slide rod 120. The shape and size of the slot 20 are set according to the shape and size of the elastic buckle 10 to ensure that the elastic buckle 10 can be accurately engaged in the slot 20 and achieve stable locking. For example, if the elastic buckle 10 is a hemispherical elastic pin, the slot 20 can be designed as a matching retaining groove. The edge of the retaining groove can be appropriately rounded so that the elastic pin moves smoothly during the engagement and disengagement process.

[0083] When the elastic buckle 10 uses an elastic metal sheet, in conjunction with the aforementioned embodiments, such as Figure 9As shown, the elastic buckle 10 and the stop member 141, which also uses an elastic piece 1412, can be integrally formed. The elastic buckle 10 has a holding portion 11 that engages with the slot 20, and the protrusion 1412B of the elastic piece 1412 is configured to engage with the slot 20 for a stop. The protrusion length of the protrusion 1412B of the elastic piece 1412 is less than the extension length of the holding portion 11 of the elastic buckle 10. Thus, in the normal locking state, the holding portion 11 of the elastic buckle 10 engages with the slot 20 to lock the slide rod 120, while the protrusion 1412B of the elastic piece 1412 either does not extend into other slots 20, or extends into other slots 20 and maintains a certain gap or forms light contact with the slot wall of the slot 20. Taking the elastic metal sheet, which is designed to be integrated with the elastic buckle 10 and the stop 141 and installed on the inner wall of the slide cavity 110Q, as an example, when the slide rod 120 is subjected to external force, such as when the head of the driver or passenger leans against the headrest 130 or when the vehicle bumps and applies a force towards the rear of the seat to the headrest 130, causing the headrest 130 to tend to displace, the slide rod 120 will tend to slide downward relative to the support 110 and contact the support 110 backward. The protrusion 1412B of the elastic sheet 1412 extends into the corresponding slot 20, and the groove wall of the slot 20 squeezes the protrusion 1412B of the elastic sheet 1412. The protrusion 1412B of the elastic sheet 1412 and the slot 20 are tightly engaged to generate a reaction force and friction force to prevent the slide rod 120 from sliding, thereby achieving a reliable stop engagement and ensuring the high stability of the headrest 130 during use.

[0084] During the height adjustment of the headrest 130, the user can apply external force to the slide rod 120, causing the slide rod 120 to slide within the slide cavity 110Q of the support member 110. When the headrest 130 reaches the desired height position, the elastic buckle 10 on the inner wall of the slide cavity 110Q automatically engages with the corresponding slot 20 on the outer wall of the slide rod 120 under its own elastic restoring force, thereby locking the slide rod 120.

[0085] In some embodiments, refer to Figure 3 and Figure 4 Along the front-back direction of the headrest 130, the stop structure 140 is located behind the slide bar 120. This position of the stop structure 140 is designed based on the direction of force transmission and the point of application when the user's head and / or neck rests against the headrest 130. Specifically, when the user's head and / or neck rests against the headrest 130, the headrest 130 is subjected to a backward leaning force, and the rear surface of the slide bar 120 directly presses against the support member 110. At this time, the stop structure 140 located behind the slide bar 120 can more directly and effectively play its stopping role, resisting the downward sliding tendency of the slide bar 120. Compared with other settings, this position layout can respond to external forces more quickly and accurately, improving the timeliness and reliability of the stop.

[0086] And / or, in some embodiments, refer to Figure 5 The support member 110 has an opening 110K communicating with the sliding cavity 110Q, and the stop structure 140 is located at the opening 110K. Specifically, when the stop structure 140 is provided on the support member 110, the stop structure 140 is located inside the sliding cavity 110Q and at the opening 110K. When the headrest 130 is subjected to a leaning force, it will be transmitted to the slide rod 120, and the slide rod 120 will then press the support member 110 backward in the sliding cavity 110Q. The opening 110K is the direct / main force-bearing position of the slide rod 120. Therefore, by providing the stop structure 140 at the opening 110K, the stop structure 140 can act more directly on the slide rod 120, reducing the stopping delay and making the stopping more timely and efficient. Furthermore, since the space at the cavity 110K position is relatively open, it is convenient to inspect and replace the stop structure 140 during later maintenance. If the stop structure 140 is damaged or worn, maintenance personnel can operate directly from the cavity 110K position without having to disassemble the entire headrest assembly 100 on a large scale, thus reducing maintenance costs and time.

[0087] In some embodiments, refer to Figure 9 , Figure 13 and Figure 14 The outer wall of the slide rod 120 is provided with an elastic anti-detachment component 30, and the inner wall of the slide cavity 110Q is provided with an anti-detachment groove 40. The elastic anti-detachment component 30 can be used to lock into the anti-detachment groove 40 when the slide rod 120 slides up to the limit position in the slide cavity 110Q to prevent the slide rod 120 from leaving the slide cavity 110Q.

[0088] The outer wall of the support member 110 is provided with a clearance hole 50 that communicates with the anti-detachment groove 40. The clearance hole 50 is used for a tool to be inserted to push the elastic anti-detachment member 30 out of the anti-detachment groove 40.

[0089] In this embodiment, the slide rod 120 slides up and down relative to the support member 110 within the slide cavity 110Q to adjust the height of the headrest 130. When the slide rod 120 slides upward to its limit position within the slide cavity 110Q, the elastic anti-slip member 30 on the outer wall of the slide rod 120 engages with the anti-slip groove 40 under its own elastic force. Due to the tight fit between the elastic anti-slip member 30 and the anti-slip groove 40, and the elastic force of the elastic anti-slip member 30, the slide rod 120 can be effectively restricted from continuing to move upward, thereby preventing the slide rod 120 from detaching from the slide cavity 110Q. As an example, the elastic anti-slip member 30 can be an elastic protrusion formed on the outer wall of the slide rod 120, and the anti-slip groove 40 is a matching groove. When the slide rod 120 reaches its limit position, the elastic protrusion engages with the groove under the action of elastic force, and the inner wall of the groove generates friction and resistance against the elastic protrusion, ensuring that the slide rod 120 will not accidentally detach, thus guaranteeing the safety of the headrest 130 during use.

[0090] When it is necessary to disassemble the headrest 130 and remove the slide rod 120 from the slide cavity 110Q of the support member 110, the user can use a tool, such as a slender rod, to insert into the anti-detachment groove 40 through the clearance hole 50. Then, the user applies an inward pushing force to the elastic anti-detachment member 30, causing the elastic anti-detachment member 30 to deform elastically and thus exit from the anti-detachment groove 40. Once the elastic anti-detachment member 30 exits the anti-detachment groove 40, the slide rod 120 can move freely, and can then be removed from the slide cavity 110Q of the support member 110, realizing the modular disassembly of the headrest assembly 100, which is beneficial for transportation and packaging.

[0091] This utility model also proposes a seat, referring to... Figure 15 The seat includes a seat body 200, a backrest support 300 disposed on the seat body 200, and a headrest assembly 100 as described in the foregoing embodiments. A support member 110 is connected to the backrest support 300. The specific structure of the headrest assembly 100 is as described in the foregoing embodiments. Since this seat adopts all the technical solutions of all the foregoing embodiments, it possesses at least all the technical effects brought about by the technical solutions of the foregoing embodiments, and will not be described in detail here. The seat body 200 includes a base, a seat cushion, and a backrest. The seat cushion is disposed on the base for the user to sit on. The backrest is disposed on the rear side of the seat cushion and connected to the base for the user to lean against. The backrest support 300 is disposed on the rear side of the backrest and provides support for the backrest.

[0092] 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: Support components; The slide rod is slidably connected to the support member; A headrest is located in front of and connected to the slide rod; The slide bar can slide up and down relative to the support member and lock to adjust the height of the headrest; At least one of the slide rod and the support member is provided with a stop structure. When the headrest is subjected to a leaning force, the stop structure is pressed against the surface of the other of the support member and the slide rod, and a frictional force is formed. The frictional force is greater than the sliding force, thereby restricting the slide rod in the locked state from sliding on the support member.

2. The headrest assembly according to claim 1, characterized in that, The support member is provided with a sliding cavity, and the sliding rod is inserted into the sliding cavity to be slidably connected with the support member.

3. The headrest assembly according to claim 2, characterized in that, The stop structure includes: A stop is provided on one of the outer wall of the slide rod and the inner wall of the slide cavity. When the headrest is subjected to a leaning force, the stop engages with the other of the outer wall of the slide rod and the inner wall of the slide cavity to restrict the slide rod in the locked state from sliding on the support.

4. The headrest assembly according to claim 3, characterized in that, The stop is used to abut against the outer wall of the slide rod or the inner wall of the slide cavity to form the stop fit.

5. The headrest assembly according to claim 3, characterized in that, The outer wall of the slide rod or the inner wall of the slide cavity is provided with a plurality of grooves, and the plurality of grooves are arranged sequentially along the sliding direction of the slide rod; The stop is used to extend into at least one of the plurality of grooves to form the stop fit.

6. The headrest assembly according to any one of claims 3 to 5, characterized in that, The stop is an elastic element.

7. The headrest assembly according to claim 6, characterized in that, The elastic element is an elastic silicone block; or... The elastic element is an elastic sheet, which has at least one protrusion. The elastic sheet forms a stop fit with the outer wall of the slide rod or the inner wall of the slide cavity through the protrusion.

8. The headrest assembly according to claim 2, characterized in that, An elastic buckle is provided on one of the outer wall of the slide rod and the inner wall of the slide cavity, and a plurality of slots are provided on the other of the outer wall of the slide rod and the inner wall of the slide cavity. The plurality of slots are arranged sequentially along the sliding direction of the slide rod, and the elastic buckle is used to engage with the slot to lock the slide rod.

9. The headrest assembly according to claim 2, characterized in that, Along the front-rear direction of the headrest, the stop structure is located on the rear side of the slide rod; and / or, The support member has an opening that communicates with the sliding cavity, and the stop structure is located at the opening.

10. The headrest assembly according to claim 2, characterized in that, The outer wall of the slide rod is provided with an elastic anti-detachment component, and the inner wall of the slide cavity is provided with an anti-detachment groove. The elastic anti-detachment component can be used to lock into the anti-detachment groove when the slide rod slides up to the limit position in the slide cavity to prevent the slide rod from detaching from the slide cavity. The outer wall of the support member is provided with a clearance hole that communicates with the anti-detachment groove. The clearance hole is used to allow a tool to be inserted to push the elastic anti-detachment member out of the anti-detachment groove.

11. A type of seat, characterized in that, The seat includes a seat body, a backrest support disposed on the seat body, and a headrest assembly as described in any one of claims 1 to 10, wherein the support member is connected to the backrest support.

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