Lifting assembly, lifting headrest and seat

Abstract

The utility model discloses a lifting assembly, lifting headrest and seat wherein the lifting assembly comprises a mounting base, a lifting base, a base baffle and a lifting slide rail, a first through hole and a second through hole are arranged in the mounting base, both the first through hole and the second through hole penetrate through the mounting base in a first direction, and the first through hole and the second through hole penetrate through the mounting base in a second direction; the lifting base comprises a guide part, a first penetrating connection part and a second penetrating connection part, the first penetrating connection part and the second penetrating connection part are connected with the guide part and distributed on the two sides of the guide part in the second direction, the first penetrating connection part and the second penetrating connection part penetrate through the first through hole and the second through hole respectively, and the base baffle and the guide part are oppositely arranged in the first direction of the mounting base. The base baffle is fixedly connected to the first penetrating connection part and the second penetrating connection part, and the lifting sliding rail is slidably connected to the guide part. According to the embodiment of the utility model, the assembly difficulty of the lifting component can be reduced, and the overall connection strength of the lifting component, the lifting headrest and the seat is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of home furnishings, and in particular relates to a lifting component, a lifting headrest and a seat. Background Art

[0002] As people's quality of life improves, the requirements for seat comfort are also getting higher and higher. In office, e-sports and other scenarios, some seats are equipped with headrests with lifting functions. Users can adjust the height of the headrest and fix it in a comfortable position. Generally speaking, a liftable headrest needs to be equipped with a corresponding lifting base to provide support and lifting guidance for the headrest. Since the lifting base is usually located in a relatively narrow space, it is inconvenient to assemble. Utility Model Content

[0003] The utility model aims to provide a lifting component, a lifting headrest and a seat, which solve the problem of inconvenient assembly of a lifting base.

[0004] In order to solve the above technical problems, the utility model is achieved as follows:

[0005] In a first aspect, the utility model provides a lifting assembly, comprising:

[0006] A mounting seat, wherein a first through hole and a second through hole are provided in the mounting seat, and the first through hole and the second through hole both penetrate the mounting seat in a first direction;

[0007] The lifting base comprises a guide portion, a first penetration portion and a second penetration portion, wherein the first penetration portion and the second penetration portion are both connected to the guide portion and are distributed on both sides of the guide portion along the second direction, and the first penetration portion and the second penetration portion are respectively penetrated in the first through hole and the second through hole;

[0008] A base baffle, the base baffle and the guide portion are arranged opposite to each other in a first direction of the mounting seat, and the base baffle is fixedly connected to the first penetration portion and the second penetration portion;

[0009] A lifting slide rail is slidably connected to the guide part.

[0010] Preferably, a base fastener is further included, and the base baffle is fixedly connected to the first penetration portion and the second penetration portion through the base fastener.

[0011] Preferably, the base fastener comprises a first screw and a second screw, the first screw is connected to an end of the first penetration portion away from the guide portion, and the second screw is connected to an end of the second penetration portion away from the guide portion.

[0012] Preferably, the base baffle is provided with a first notch and a second notch, and the base baffle is placed on the first screw through the first notch, and is placed on the second screw through the second notch.

[0013] Preferably, a plurality of gear slots are provided on the lifting slide rail, and positioning beads matching the gear slots are provided on the guide portion.

[0014] Preferably, the lifting slide rail is provided with slide grooves on both sides along the second direction, and the guide portion is provided with a guide groove, and the slot width of the guide groove is smaller than the slot bottom width of the guide groove, so as to form a guide protrusion matching the slide groove at the position of the slot.

[0015] Preferably, the upper end of the slide groove extends upward along the height direction of the lifting slide rail to form a blind end for preventing the lifting slide rail from escaping from the lower end of the guide groove when sliding downward, and the lower end of the slide groove extends downward along the height direction of the lifting slide rail and passes through the lower end surface of the lifting slide rail, and the lower end of the lifting slide rail is provided with a snap structure for preventing the lifting slide rail from escaping from the upper end of the guide groove when sliding upward.

[0016] In a second aspect, the utility model provides a lifting headrest, comprising the above-mentioned lifting assembly and a headrest body, wherein the headrest body is connected to a lifting slide rail of the lifting assembly.

[0017] Preferably, the lifting headrest further comprises a headrest fixing plate, the headrest fixing plate is fixedly connected to the headrest body, and the headrest body is connected to the lifting slide rail via the headrest fixing portion.

[0018] In a third aspect, the utility model further provides a seat, comprising the above-mentioned lifting headrest.

[0019] The lifting assembly proposed in the utility model can fix the mounting base and the lifting base by means of a base baffle plate arranged on the back side of the mounting base. Since the back side of the mounting base usually has a larger space, it is convenient for assembly and other operations, which greatly reduces the difficulty of assembling the lifting assembly. At the same time, the connection method in which the mounting base, the lifting base and the base baffle are interpenetrated with each other can also effectively improve the overall connection strength of the lifting assembly.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1It is a structural schematic diagram of a lifting assembly provided by an embodiment of the utility model;

[0023] Figure 2 It is a structural diagram of the lifting base;

[0024] Figure 3 It is a structural diagram of the lifting slide rail;

[0025] Figure 4 It is a schematic diagram of the exploded structure of the lifting assembly without the mounting base;

[0026] Figure 5 It is one of the structural diagrams of the lifting headrest;

[0027] Figure 6 This is the second structural diagram of the lifting headrest;

[0028] Figure 7 This is a schematic diagram of the exploded structure of the lifting headrest.

[0029] Figure numerals: 100, mounting seat; 110, first through hole; 120, second through hole; 200, lifting base; 210, guide portion; 211, guide groove; 212, guide protrusion; 220, first connecting portion; 230, second connecting portion; 300, base baffle; 310, first notch; 320, second notch; 400, lifting rail; 410, gear slot; 420, slide groove; 430, buckle structure; 510, first screw; 520, second screw; 600, positioning bead; 700, headrest body; 800, headrest fixing plate. DETAILED DESCRIPTION

[0030] The embodiments of the utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and should not be construed as limiting the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0031] The term "first" or "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figures 1 to 4 As shown, the embodiment of the utility model provides a lifting assembly, including:

[0035] A mounting base 100, wherein a first through hole 110 and a second through hole 120 are disposed in the mounting base 100, and the first through hole 110 and the second through hole 120 both penetrate the mounting base 100 in a first direction D1;

[0036] The lifting base 200 includes a guide portion 210, a first connecting portion 220, and a second connecting portion 230. The first connecting portion 220 and the second connecting portion 230 are both connected to the guide portion 210 and are distributed on both sides of the guide portion 210 along the second direction D2. The first connecting portion 220 and the second connecting portion 230 are respectively inserted into the first through hole 110 and the second through hole 120.

[0037] The base baffle 300 is disposed opposite to the guide portion 210 in the first direction of the mounting base 100, and the base baffle 300 is fixedly connected to the first connecting portion 220 and the second connecting portion 230;

[0038] The lifting rail 400 is slidably connected to the guide portion 210 .

[0039] In this embodiment, the mounting base 100 can be used as a mounting base for other components in the lifting assembly. In some embodiments, the mounting base 100 can be an integral structure or a split structure. When the lifting assembly is mounted on an external structural member, it can be connected to the external structural member through the mounting base 100. In combination with some application scenarios, the external structural member can be a seat body, or a lamp base or a mirror base, etc., which is not specifically limited here.

[0040] The mounting base 100 is provided with a first through hole 110 and a second through hole 120. Both the first through hole 110 and the second through hole 120 penetrate the mounting base 100 in the first direction D1. That is, the first through hole 110 and the second through hole 120 may be arranged in the same direction. For the sake of convenience, the first direction D1 refers to the thickness direction of the mounting base 100. As shown above, the mounting base 100 may be a split structure. Accordingly, the first through hole 110 and the second through hole 120 may be respectively arranged on different parts of the mounting base 100. For example, Figure 1 As shown, in a feasible embodiment, the mounting base 100 includes two ring-like parts arranged opposite to each other, and the central holes of the ring-like parts constitute the above-mentioned first through hole 110 and second through hole 120. Of course, this is an example of a feasible structure of the mounting base 100. In actual applications, the mounting base 100 can also be other shapes or an integral structure, etc., which will not be illustrated one by one here.

[0041] The lifting base 200 can be installed on the mounting base 100, and the size and shape of the lifting base 200 can be adapted and designed according to the shape and size of the mounting base 100 to be assembled. In this embodiment, the lifting base 200 mainly includes a guide portion 210, a first penetration portion 220 and a second penetration portion 230. Among them, the guide portion 210 is used to install the lifting slide rail 400, and the two can slide relative to each other. As for the implementation structure of the sliding, no specific limitation is made here. The two penetration portions are respectively connected to the two sides of the guide portion 210 along the second direction D2. In some feasible embodiments, the guide portion 210, the first penetration portion 220 and the second penetration portion 230 can form a C-shape, an H-shape or a similar shape. In this way, the guide portion 210 can be set on one side of the mounting base 100 along the first direction D1, and the two penetration portions can be respectively inserted into the first through hole 110 and the second through hole 120, and the penetration portion extends from the guide portion 210 to the other side of the mounting base 100 along the first direction D1.

[0042] One end of the first connecting portion 220 and the second connecting portion 230 away from the guide portion 210 is connected to the base baffle 300, and the base baffle 300 and the guide portion 210 are respectively located on both sides of the first direction D1 of the mounting base 100, so that the guide portion 210, the first connecting portion 220, the base baffle 300 and the second connecting portion 230 form a closed structure, and are equivalent to being wound in the first through hole 110 and the second through hole 120 of the mounting base 100, thereby achieving relative fixation among the mounting base 100, the lifting base 200 and the base baffle 300.

[0043] In some embodiments, the base baffle 300 and the two connecting parts may be connected via fasteners, or may be directly snapped together via structures in the form of buckles or slots, etc., which are not specifically limited here.

[0044] In some embodiments, the lifting base 200 can be an integral structural member, that is, the guide portion 210, the first connecting portion 220 and the second connecting portion 230 can be pre-fixed together. The specific fixing method can be one-piece molding, welding, snap connection or fastener connection, etc., which is not specifically limited here.

[0045] Generally speaking, the side where the guide part 210 is connected to the lifting rail 400 will be affected by the size or external structure of the guide part 210 itself, resulting in a small operable space, which is not convenient for assembling the guide part 210 and the mounting base 100. In this embodiment, the mounting base 100 and the lifting base 200 can be fixed by the base baffle 300 arranged on the back side of the mounting base 100. Since the back side of the mounting base 100 usually has a larger space, it is convenient to perform assembly operations, which greatly reduces the difficulty of assembling the lifting assembly. At the same time, the connection method of the mounting base 100, the lifting base 200 and the base baffle 300, which are mutually intertwined, can also effectively improve the overall connection strength of the lifting assembly.

[0046] Optionally, the lifting assembly further includes a base fastener, and the base baffle 300 is fixedly connected to the first connecting portion 220 and the second connecting portion 230 via the base fastener.

[0047] In some examples, the base fastener may be a structure such as a bolt or a screw, and the first through-connection portion 220 and the second through-connection portion 230 may be preset with a structure matching the base fastener, for example, nuts are provided in the two through-connections, so that the base fastener can be connected to the two through-connections of the lifting base 200. As for the base baffle 300, a through hole or a slotted structure may be provided to ensure that the base fastener can pass through the base baffle 300 and connect with the through-connection, and at the same time, the tail end of the base fastener can be blocked. During the process of screwing the base fastener in, the lifting base 200 and the base baffle 300 are mutually tightened, so that both are reliably fixed on the mounting base 100.

[0048] Alternatively, if Figure 1 and Figure 4 As shown, the base fastener includes a first screw 510 and a second screw 520 . The first screw 510 is connected to one end of the first penetration portion 220 away from the guide portion 210 , and the second screw 520 is connected to one end of the second penetration portion 230 away from the guide portion 210 .

[0049] In some embodiments, a screw hole may be provided at one end of the first connecting portion 220 and the second connecting portion 230 away from the guide portion 210, or a nut may be embedded therein. Through this structure, the first screw 510 is connected and fixed to the first connecting portion 220, and the second screw 520 is connected and fixed to the second connecting portion 230. At the same time, the structure of the screw makes the assembly of the base baffle 300 and the lifting base 200 more convenient.

[0050] In some embodiments, the number of the first screw 510 can be one or more, which can be set as needed. Similarly, the number of the second screws 520 can also be selected as needed.

[0051] Alternatively, if Figure 1 and Figure 4 As shown, a first notch 310 and a second notch 320 are provided on the base baffle 300 , and the base baffle 300 is placed on the first screw 510 through the first notch 310 , and is placed on the second screw 520 through the second notch 320 .

[0052] Based on the structure of the base baffle 300 in this embodiment, during the assembly process, the first screw 510 and the second screw 520 can be screwed into the first connection portion 220 and the second connection portion 230 respectively, while avoiding screwing the screws completely into the connection portions; then the base baffle 300 can be placed on the first screw 510 and the second screw 520. At this time, the first slot 310 can overlap the first screw 510, and the second slot 320 can overlap the second screw 520; finally, the first screw 510 and the second screw 520 are further tightened. When the diameter of the tail of the screw is larger than the diameter of the bottom of the slot, as the screw is screwed in, the lifting base 200 and the base baffle 300 can be continuously tightened to achieve fixation between the two.

[0053] Compared with the structural design of first aligning the base baffle 300 and the lifting base 200 and then screwing in the screws, this embodiment obviously does not require the operator to hold the larger base baffle 300 and the lifting base 200 and keep them aligned before screwing in the screws, which helps to effectively reduce the difficulty of the assembly operation.

[0054] Optionally, the first screw 510 and the second screw 520 are both knurled handle screws.

[0055] In this embodiment, the first screw 510 and the second screw 520 are designed to be knurled handle screws. When the operator performs the screw-in operation of the first screw 510 and the second screw 520, they can directly screw them in manually without the aid of a screwdriver, etc., thereby effectively reducing the difficulty of the assembly operation.

[0056] Alternatively, if Figure 3 and Figure 4 As shown, a plurality of gear slots 410 are provided on the lifting rail 400 , and a positioning bead 600 matching the gear slots 410 is provided on the guide portion 210 .

[0057] In this embodiment, the plurality of gear slots 410 may be arranged sequentially in the sliding direction of the lifting rail 400 . For example, when the lifting rail 400 slides in the up and down directions, the plurality of gear slots 410 may be arranged sequentially in the up and down directions.

[0058] The gear slot 410 matches with the positioning bead 600 arranged on the guide part 210. When the positioning bead 600 is inserted into one of the gear slots 410, the lifting rail 400 and the lifting base 200 can remain relatively fixed. If the force applied to the lifting rail 400 is greater than the threshold, the positioning bead 600 can be disengaged from the current gear slot 410 and inserted into another gear slot 410 again after the lifting rail 400 slides a certain distance.

[0059] It is easy to understand that if the lifting slide rail 400 is configured to slide in the up and down directions, when the positioning bead 600 is inserted into different gear slots 410, the height of the lifting slide rail 400 is also different, thereby realizing the height adjustment of the lifting slide rail 400, with high adjustment accuracy and small adjustment resistance; at the same time, when the positioning bead 600 reaches the gear slot 410, the lifting slide rail 400 and the lifting base 200 can be relatively fixed, thereby realizing the maintenance of the position of the lifting slide rail 400.

[0060] In some alternative embodiments, the above-mentioned positioning beads 600 can be eliminated, and a buckle can be directly added to the lifting base 200 to provide a gear position. When the buckle is released, the lifting rail 400 and the lifting base 200 can slide relative to each other. When the lifting rail 400 slides to the desired position, the buckle is tightened, and the lifting rail 400 and the lifting base 200 are relatively fixed.

[0061] Alternatively, if Figure 2 and Figure 3 As shown, the lifting rail 400 is provided with slide grooves 420 on both sides along the second direction D2, and the guide portion 210 is provided with a guide groove 211, and the slot width of the guide groove 211 is smaller than the slot bottom width of the guide groove 211, so as to form a guide protrusion 212 matching the slide groove 420 at the slot position.

[0062] To facilitate understanding, in one example, the cross-sectional shape of the guide groove 211 can be a trapezoid or a shape similar to a trapezoid. At the same time, the width of the guide groove 211 at the notch position is smaller than the width of the guide groove 211 at the bottom position. In this way, the notch position of the guide groove 211 can be considered to be a protrusion formed on the groove wall surface to a certain extent, and the protrusion can correspond to the above-mentioned guide protrusion 212.

[0063] Of course, in other examples, the guide protrusion 212 may also be an independent structure, connected to the groove wall of the guide groove 211 near the groove opening by a fixed connection method.

[0064] The lifting slide rail 400 is provided with slide grooves 420 on both sides along the second direction D2. The lifting slide rail 400 can be inserted into the guide groove 211 along its height direction, and the guide protrusion 212 can be inserted into the slide groove 420. At this time, the guide protrusion 212 can slide in the slide groove 420. The cross-sectional shape of the guide groove 211 is narrow on the outside and wide on the inside, which can limit the freedom of movement of the lifting slide rail 400 on the plane perpendicular to the sliding direction, avoid shaking or deflection of the lifting slide rail 400, and thus ensure the stability of the lifting slide rail 400 during sliding.

[0065] Alternatively, if Figure 3As shown, the lower end of the slide groove 420 passes through the lower end surface of the lifting slide rail 400, and the upper end of the slide groove 420 extends upward along the height direction of the lifting slide rail 400 to form a blind end, that is, the slide groove 420 does not pass through the upper end surface of the lifting slide rail 400, thereby preventing the guide protrusion 212 from sliding out of the upper end of the slide groove 420.

[0066] In this embodiment, the slide groove 420 passes through the lower end surface of the lifting slide rail 400, but does not pass through the upper end surface of the lifting slide rail 400. The part of the lifting slide rail 400 located at the upper end of the slide groove 420 forms a limiting portion. During assembly or application, the lifting slide rail 400 can be assembled in the guide groove 211 of the lifting base 200 from top to bottom. At the same time, the limiting portion can prevent the lifting slide rail 400 from escaping from the guide groove 211 during the downward movement.

[0067] The lower end of the lifting rail 400 is provided with a buckle structure 430, and the buckle structure 430 can be deformed along the second direction D2. When the lifting rail 400 is installed in the lifting base 200, the inner wall of the guide groove 211 presses the buckle structure 430 in the direction of the lifting rail 400, and the buckle structure 430 is deformed. The width of the corresponding position of the lower end of the lifting rail 400 is reduced, and the lifting rail 400 can be inserted into the guide groove 211 along its height direction, and the guide protrusion 212 Correspondingly inserted into the slide groove 420, after the lifting slide rail 400 is completely installed in the lifting base 200, that is, the lifting slide rail 400 moves downward along the guide groove 211 until the snap structure 430 escapes from the lower end of the guide groove 211, the snap structure 430 loses the squeezing of the inner wall of the guide groove 211, and opens in the direction away from the lifting slide rail 400 under the action of its own rebound force to form a limiting structure, thereby preventing the lifting slide rail 400 from escaping from the guide groove 211 during the upward movement.

[0068] There are many ways to implement the snap structure 430. For example, a slot can be opened on the side wall of the slide groove 420 at the lower end of the lifting slide rail 400. The slot penetrates the side wall of the slide groove 420 in the first direction D1. A section of the side wall of the slide groove 420 isolated by the slot forms a snap body that can be deformed along the second direction D2 (i.e., the width direction of the lifting slide rail 400). A protrusion is set at the lower end of the snap body in the second direction D2 away from the lifting slide rail 400. The protrusion is integrally formed with the snap body to form the snap structure 430. The width of the lower end of the lifting slide rail 400 at the protrusion position is greater than the width of the guide groove 211 of the lifting base 200. When the lifting rail 400 is installed into the lifting base 200, the buckle structure 430 is squeezed by the inner wall of the guide groove 211, and the buckle structure 430 is deformed, and the width of the lower end of the lifting rail 400 is reduced to match the width of the guide groove 211, so that the lifting rail 400 can be inserted into the guide groove 211, and the guide protrusion 212 is correspondingly inserted into the slide groove 420. When the lifting rail 400 is slid downward until the buckle structure 430 is disengaged from the lower end of the guide groove 211, the buckle structure 430 is deformed. The buckle structure 430 opens in the second direction D2 away from the lifting rail 400 under the action of its elastic restoring force. The width of the lower end of the lifting rail 400 at the protruding position of the buckle structure 430 is greater than the width of the guide groove 211. When the lifting rail 400 slides upward along the guide groove 211 to the extreme position, the protrusion of the buckle structure 430 abuts against the bottom surface of the lifting base 200 at the lower end of the guide groove 211, preventing the lifting rail 400 from continuing to slide upward and slipping out of the guide groove 211.

[0069] One snap-fit ​​structure 430 may be provided, or two or more snap-fit ​​structures 430 may be provided. For example, one snap-fit ​​structure 430 may be provided on the same side of the bottom of the two slide grooves 420 (eg, the side facing the lifting base 200 ).

[0070] Alternatively, if Figures 5 to 7 As shown, the embodiment of the utility model also provides a lifting headrest, including:

[0071] The lifting assembly mentioned above;

[0072] The headrest body 700 is connected to the lifting slide rail 400 of the lifting assembly.

[0073] In this embodiment, the headrest body 700 is connected to the lifting rail 400 of the lifting assembly. When the lifting rail 400 slides relative to the lifting base 200, the height of the headrest body 700 can be adjusted to meet the needs of users of different heights, or to adapt to the headrest usage needs in different postures of the user, thereby improving the user experience.

[0074] Alternatively, if Figure 5 and Figure 7As shown, the lifting headrest further includes a headrest fixing plate 800 , which is fixedly connected to the headrest body 700 , and the headrest body 700 is connected to the lifting slide rail 400 via the headrest fixing plate 800 .

[0075] In some embodiments, the headrest fixing plate 800 and the headrest main body 700 may be integrally foamed and have a relatively good connection strength therebetween. Of course, other fixed connection methods may also be used therebetween.

[0076] Compared with the headrest main body 700, a connection structure can be more conveniently and reliably provided on the headrest fixing plate 800 to facilitate assembly and connection with the lifting rail 400, thereby reducing the assembly difficulty of the lifting headrest and improving the structural reliability of the lifting headrest.

[0077] Optionally, an embodiment of the utility model further provides a seat, which includes the above-mentioned lifting headrest, and other structures of the seat are the same as those in the prior art and are not described in detail here.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lifting assembly, characterized in that: include: A mounting seat, wherein a first through hole and a second through hole are provided in the mounting seat, and the first through hole and the second through hole both penetrate the mounting seat in a first direction; A lifting base, the lifting base comprising a guide portion, a first penetration portion and a second penetration portion, the first penetration portion and the second penetration portion are both connected to the guide portion and are distributed on both sides of the guide portion along the second direction, and the first penetration portion and the second penetration portion are respectively penetrated in the first through hole and the second through hole; A base baffle, the base baffle and the guide portion are arranged opposite to each other in a first direction of the mounting seat, and the base baffle is fixedly connected to the first connecting portion and the second connecting portion; A lifting slide rail is slidably connected to the guide portion.

2. The lifting assembly according to claim 1, characterized in that: It also includes a base fastener, and the base baffle is fixedly connected to the first penetration portion and the second penetration portion through the base fastener.

3. The lifting assembly according to claim 2, characterized in that: The base fastener includes a first screw and a second screw, the first screw is connected to an end of the first penetration portion away from the guide portion, and the second screw is connected to an end of the second penetration portion away from the guide portion.

4. The lifting assembly according to claim 3, characterized in that: The base baffle is provided with a first notch and a second notch. The base baffle is placed on the first screw through the first notch, and is placed on the second screw through the second notch.

5. The lifting assembly according to claim 1, characterized in that: The lifting slide rail is provided with a plurality of gear slots, and the guide portion is provided with positioning beads matching the gear slots.

6. The lifting assembly according to claim 1, characterized in that: The lifting slide rail is provided with slide grooves on both sides along the second direction, and the guide portion is provided with a guide groove, the slot width of the guide groove is smaller than the slot bottom width of the guide groove, so as to form a guide protrusion matching the slide groove at the position of the slot.

7. The lifting assembly according to claim 6, characterized in that: The upper end of the slide groove extends upward along the height direction of the lifting slide rail to form a blind end for preventing the lifting slide rail from escaping from the lower end of the guide groove when sliding downward. The lower end of the slide groove extends downward along the height direction of the lifting slide rail and passes through the lower end surface of the lifting slide rail. The lower end of the lifting slide rail is provided with a snap structure for preventing the lifting slide rail from escaping from the upper end of the guide groove when sliding upward.

8. A lifting headrest, characterized in that: include: The lifting assembly according to any one of claims 1 to 7; A headrest body is connected to the lifting slide rail of the lifting assembly.

9. The lifting headrest according to claim 8, characterized in that: It also includes a headrest fixing plate, which is fixedly connected to the headrest body, and the headrest body is connected to the lifting slide rail through the headrest fixing part.

10. A seat, characterized in that: Including the lifting headrest described in claim 8 or 9.

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