Sitting frame protection structure

Abstract

The utility model discloses a seat frame protection structure which comprises a base assembly, a leg supporting mechanism and a base protection assembly, and the base assembly comprises a movable base and a fixed base which are slidably connected through a guide assembly; the leg supporting mechanism comprises a first leg connecting rod hinged to the movable base and a second leg connecting rod hinged to the first leg connecting rod. The base protection assembly is installed on the fixed base, and the base protection assembly is arranged on the outer side of the guide assembly in a covering mode. The fixed base and the movable base are in sliding connection through the guide assembly, the base protection assembly is arranged on the outer side of the guide assembly, the guide assembly and the external environment are isolated, and objects and dust in the external environment are prevented from affecting relative movement of the fixed base and the movable base; the leg protection component is installed on the outer side of the second leg connecting rod, and the situation that normal movement of the leg supporting mechanism is affected by objects in the external environment is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture, in particular to a seat frame protection structure. BACKGROUND

[0002] At present, the seat is often provided in a movable structure form to meet the needs of users for different sitting postures. In order to ensure that the seat moves according to the preset form, the seat is provided with a corresponding guide structure. However, the guide structure exposed to the outside is easy to interfere with objects in the external environment, causing the movement process of the seat to be blocked, and the dust in the external environment is also easy to invade the guide structure, causing the seat to move unsmoothly.

[0003] At the same time, the seat is often provided with a leg support mechanism. The leg support mechanism changes the posture of the user's legs by movement, and the leg support mechanism is also easy to be affected by objects in the external environment, causing the movement process of the leg support mechanism to be blocked. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a seat frame protection structure which can protect the guide assembly with the base protection assembly and protect the leg support mechanism with the leg protection component.

[0005] According to the first aspect of the embodiment of the present application, the seat frame protection structure comprises a base assembly, a leg support mechanism and a base protection assembly. The base assembly comprises a movable base and a fixed base which are connected by a guide assembly. The leg support mechanism comprises a first leg link hinged to the movable base and a second leg link hinged to the first leg link. The base protection assembly is installed on the fixed base and covers the outside of the guide assembly.

[0006] According to the seat frame protection structure of the present application, the fixed base and the movable base are connected by the guide assembly, the base protection assembly is arranged on the outside of the guide assembly, the guide assembly and the external environment are isolated, and the relative movement of the fixed base and the movable base is prevented from being affected by objects and dust in the external environment. The leg protection component is installed on the outside of the second leg link, and the normal movement of the leg support mechanism is prevented from being affected by objects in the external environment.

[0007] According to some embodiments of the present application, the guide assembly comprises a first guide structure and a second guide structure arranged on the fixed base, and the base protection assembly comprises a first base shield covering the first guide structure and a second base shield covering the second guide structure.

[0008] According to some embodiments of this application, the edges of the first base guard plate and the second base guard plate are provided with bent edging, and the first base guard plate and the second base guard plate abut against the fixed base through the edging.

[0009] According to some embodiments of this application, the first base guard plate includes a base body and at least two first mounting structures. Each of the first mounting structures that is attached to the fixed base is connected to the base body through a first folded edge to ensure that a first gap is left between the base body and the fixed base. Each of the first mounting structures is provided with a first fastener connection structure, and the first base guard plate is installed on the fixed base through fasteners.

[0010] According to some embodiments of this application, the second guide structure includes a first inclined portion and a second inclined portion connected to each other, and the second base guard plate includes a first protective portion covering the first inclined portion and a second protective portion covering the second inclined portion; the first protective portion has an inclination angle of 15° to 33° relative to the horizontal direction, and the second protective portion has an inclination angle of 5° to 18° relative to the horizontal direction.

[0011] According to some embodiments of this application, the second base guard plate further includes at least one second mounting structure. The second mounting structure, which is attached to the fixed base, is disposed on the first protective part. The second mounting structure is connected to the first protective part through a second folded edge to ensure that a second gap is left between the first protective part and the second protective part and the fixed base. The second mounting structure is provided with a second fastener connection structure, and the first protective part is installed on the fixed base through fasteners.

[0012] According to some embodiments of this application, the second base guard plate further includes a slot disposed in the second protective part, and the second protective part is inserted into the fixed base through the slot.

[0013] According to some embodiments of this application, the slot is provided with a insert for connecting the second protective part, the fixing base is provided with a socket, and the insert is used to insert into the socket.

[0014] According to some embodiments of this application, a leg protection component is mounted on the second leg link and covers the outside of the leg support mechanism;

[0015] The leg support mechanism further includes a leg link mounting component hinged to the second leg link, and the leg protection component connected to the second leg link extends to the leg link mounting component.

[0016] The leg protection component is provided with a rotating connection part, and a screw is fixedly installed on the rotating connection part. The leg protection component is rotatably connected to the second leg link through the screw. The leg protection component is provided with a fixed connection part for installing fasteners. The leg protection component is fixedly connected to the second leg link through fasteners.

[0017] According to some embodiments of this application, the leg protection component is further provided with a hollow portion, which is used to avoid the hinge position of the first leg link and the second leg link.

[0018] According to some embodiments of this application,

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The present application will be further illustrated below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments illustrated in the following drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0021] Figure 1 This is a schematic diagram of the seat frame protection structure from one perspective according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the base assembly and leg support mechanism in the seat frame protection structure of this application embodiment, without the base protection assembly and leg protection components installed;

[0023] Figure 3 This is a schematic diagram of the first base guard plate in the seat frame protection structure of this application from one perspective;

[0024] Figure 4 This is a structural schematic diagram of the first base guard plate in the seat frame protection structure of this application from another perspective;

[0025] Figure 5 This is a schematic diagram of the second base guard plate in the seat frame protection structure of this application from one perspective;

[0026] Figure 6 This is a structural schematic diagram of the second base guard plate in the seat frame protection structure of this application from another perspective;

[0027] Figure 7 This is a front view of the seat frame protective structure according to an embodiment of this application;

[0028] Figure 8 This is the seat frame protective structure of the embodiment of this application. Figure 7 Cross-sectional view of CC;

[0029] Figure 9 This is a front view of the seat frame protection structure in this application embodiment, where the fixed base is not equipped with the base protection component;

[0030] Figure 10 This is the seat frame protective structure of the embodiment of this application. Figure 7 A magnified view of part A in the middle;

[0031] Figure 11 This is a schematic diagram of the seat frame protection structure from another perspective according to an embodiment of this application;

[0032] Figure 12 This is the seat frame protective structure of the embodiment of this application. Figure 9 A magnified view of part B in the middle section;

[0033] Figure 13 This is a front view of the leg support mechanism in the seat frame protection structure of this application embodiment without the installation of leg protection components;

[0034] Figure 14 This is a schematic diagram of the leg protection component in the seat frame protection structure of this application from one perspective;

[0035] Figure 15 This is a structural schematic diagram of the leg protection component in the seat frame protection structure of this application embodiment from another perspective.

[0036] Figure label:

[0037] 100. Base assembly; 101. Movable base; 102. Fixed base; 103. First guide structure; 104. Second guide structure; 1041. First inclined portion; 1042. Second inclined portion; 105. First sliding component; 106. Second sliding component;

[0038] 200. Leg support mechanism; 201. First leg link; 202. Second leg link; 203. Leg link mounting components;

[0039] 300. Base protection assembly; 301. First base guard plate; 302. Second base guard plate; 303. Edge surround;

[0040] 401. Base; 402. First mounting structure; 403. First folded edge; 404. First fastener connection structure; 405. First gap;

[0041] 501. First protective part; 502. Second protective part; 503. Second mounting structure; 504. Second folded edge; 505. Second fastener connection structure; 506. Second gap; 507. Slot; 508. Insert; 509. Socket;

[0042] 600. Leg protection component; 601. Rotating connection; 602. Screw; 603. Fixed connection; 604. Hollowed-out part; 605. Reinforcing rib. Detailed Implementation

[0043] The embodiments of this application are described in detail below with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0044] In the description of this application, it should be understood that the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0046] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] like Figure 1 As shown, this application provides a seat frame protection structure, which includes a base assembly 100, a leg support mechanism 200, a base protection assembly 300, and a leg protection component 600. The base assembly 100 serves as the overall support foundation for the seat frame, and the leg support mechanism 200 is disposed on the base assembly 100. To meet the different sitting posture needs of users, the base assembly 100 and the leg support mechanism 200 are capable of movement. The seat frame protection structure of this application includes a base protection assembly 300 and a leg protection component 600 to ensure smooth movement of the base assembly 100 and the leg support mechanism 200.

[0049] Furthermore, the base assembly 100 includes a movable base 101 and a fixed base 102, which are slidably connected. A base protection component 300 is disposed at the position where the movable base 101 and the fixed base 102 are slidably connected, and serves to protect the base assembly 100. Additionally, the base protection component 300 can prevent objects in the external environment from affecting the slidable connection between the movable base 101 and the fixed base 102, and also prevent dust from the external environment from entering the base assembly 100 at this position, ensuring a smooth slidable connection between the movable base 101 and the fixed base 102.

[0050] Meanwhile, the leg protection component 600 is installed on the leg support mechanism 200 and serves to protect the leg support mechanism 200, preventing objects in the external environment from affecting the movement of the leg support mechanism 200 and ensuring smooth movement of the leg support mechanism 200.

[0051] The contents of this application are described in detail below with reference to specific embodiments. It should be noted that the following description is merely illustrative and not a specific limitation of this application.

[0052] In some examples, the fixed base 102 is provided with a guide assembly, and the movable base 101 is slidably connected to the fixed base 102 via the guide assembly. It is understood that the position where the movable base 101 is slidably connected to the fixed base 102 is the position of the guide assembly. Therefore, it is necessary to prevent objects in the external environment from contacting the guide assembly, and it is also necessary to prevent dust in the external environment from entering the guide assembly.

[0053] The fixed base 102 is in a fixed position, while the movable base 101 can slide relative to the fixed base 102 along the guide assembly, achieving relative movement between the movable base 101 and the fixed base 102. Simultaneously, the movable base 101 is used to mount the seat cushion. Under the guiding and limiting effect of the guide assembly, the movable base 101, along with the seat cushion, slides relative to the fixed base 102, thereby adjusting the position and angle of the seat cushion. This method of changing the user's sitting posture can meet the user's needs for various sitting positions.

[0054] Furthermore, the base protection component 300 is installed on the fixed base 102 and covers the outside of the guide component. The base protection component 300 can isolate the guide component from objects in the external environment, thereby protecting the guide component and ensuring smooth sliding connection between the movable base 101 and the fixed base 102.

[0055] Meanwhile, the leg support mechanism 200 is hinged to the movable base 101. When the leg support mechanism 200 moves relative to the movable base 101, it can extend or retract, thereby providing support for the user's legs at different degrees and angles to meet the user's needs for various sitting postures.

[0056] It is worth noting that the sliding of the movable base 101 relative to the fixed base 102 is linked to the extension and retraction of the leg support mechanism 200. When the movable base 101 gradually slides into the range of the fixed base 102, the leg support mechanism 200 gradually retracts until it retracts to the bottom of the movable base 101, at which point the user assumes a normal sitting posture. When the movable base 101 gradually slides out of the range of the fixed base 102, the leg support mechanism 200 gradually extends until it extends to its limit position, at which point the user assumes a lying posture.

[0057] Specifically, the leg support mechanism 200 includes a first leg link 201 and a second leg link 202. The first leg link 201 is hinged to the movable base 101, and the second leg link 202 is hinged to the first leg link 201. In the seat frame, the second leg link 202 is located outside the first leg link 201, and the length of the second leg link 202 is also greater than the length of the first leg link 201. Therefore, the second leg link 202 is more susceptible to interference from objects in the external environment. Therefore, the leg protection component 600 is installed on the second leg link 202 and covers the outside of the leg support mechanism 200.

[0058] like Figure 1 and Figure 2 As shown, in some examples, the guide component includes a first guide structure 103 and a second guide structure 104. The first guide structure 103 and the second guide structure 104 extend in different directions, and both the first guide structure 103 and the second guide structure 104 limit the sliding direction of the movable base 101, so that the movable base 101 can also be adjusted in angle during the sliding process, thereby improving the user's comfort.

[0059] Furthermore, corresponding to the first guide structure 103 and the second guide structure 104, the base protection assembly 300 includes a first base guard plate 301 and a second base guard plate 302. The first base guard plate 301 covers the first guide structure 103, and the second base guard plate 302 covers the second guide structure 104, thereby fully protecting the first guide structure 103 and the second guide structure 104.

[0060] Specifically, both the first guide structure 103 and the second guide structure 104 are groove structures, and the movable base 101 is provided with a first sliding component 105 and a second sliding component 106. The first sliding component 105 slides within the range of the first guide structure 103, and the second sliding component 106 slides within the range of the second guide structure 104, thereby realizing the sliding connection between the movable base 101 and the fixed base 102.

[0061] like Figure 3 and Figure 5 As shown, in some examples, the edge of the first base guard plate 301 is provided with a bent rim 303, which is used to abut against the fixed base 102, so that the first base guard plate 301 completely surrounds the first guide structure 103. The first guide structure 103 is in a relatively sealed space, thereby preventing objects and dust in the external environment from affecting the connection between the first guide structure 103 and the first sliding component 105.

[0062] Similarly, the edge of the second base guard plate 302 is also provided with a bent rim 303, so that the second base guard plate 302 completely surrounds the second guide structure 104, and the second guide structure 104 is also in a relatively sealed space, thereby avoiding objects and dust in the external environment from affecting the connection between the second guide structure 104 and the second sliding component 106.

[0063] like Figure 7 and Figure 9 As shown, in some examples, the tilt angle γ of the first guide structure 103 relative to the horizontal direction is -5° to 5°, and the tilt angle of the first base guard plate 301 relative to the horizontal direction is also -5° to 5°, thereby matching the extension direction of the first guide structure 103.

[0064] like Figure 3 , Figure 4 and Figure 8 As shown, in some examples, the first base plate 301 includes a base 401 and a first mounting structure 402, and the first base plate 301 is mounted on the fixed base 102 through the first mounting structure 402. To ensure the installation stability of the first base plate 301, the first mounting structure 402 is disposed at opposite ends of the first base plate 301, therefore at least two first mounting structures 402 are provided.

[0065] Specifically, three first mounting structures 402 are provided. Two first mounting structures 402 are provided at the end of the first base guard plate 301 near the front of the seat frame, and one first mounting structure 402 is provided at the end of the first base guard plate 301 near the rear of the seat frame.

[0066] The first mounting structure 402 needs to be fitted to the fixed base 102 to ensure the connection between the first base guard plate 301 and the fixed base 102. At the same time, a first gap 405 needs to be reserved between the base 401 and the fixed base 102. The first gap 405 is used to accommodate the first sliding component 105, preventing the first sliding component 105 from contacting the base 401 and ensuring that the first sliding component 105 slides smoothly within the range of the first guide structure 103.

[0067] Therefore, each of the first mounting structures 402 is connected to the base 401 through the first folded edge 403, so that the base 401 and the first mounting structure 402 are not on the same plane. Under the premise that the first mounting structure 402 is attached to the fixed base 102, a first gap 405 can be left between the base 401 and the fixed base 102.

[0068] In some examples, the first mounting structure 402 is provided with a first fastener connection structure 404, which is used to set fasteners, so that the first base guard plate 301 is mounted on the fixed base 102 by fasteners.

[0069] Specifically, the fasteners here can be bolts, screws, or other components. The first fastener connection structure 404 can be a hole structure. It is understood that the first base guard plate 301 can be designed according to the specific shape of the first guide structure 103 to ensure that the first base guard plate 301 can cover the first guide structure 103, thereby protecting the first guide structure 103.

[0070] like Figure 7 and Figure 9 As shown, in some examples, in order to define the sliding direction of the second sliding member 106, the second guide structure 104 includes a first inclined portion 1041 and a second inclined portion 1042 connected to each other. Both the first inclined portion 1041 and the second inclined portion 1042 are inclined at a certain angle to the horizontal direction, and the angle between the first inclined portion 1041 and the horizontal direction is greater than the angle between the second inclined portion 1042 and the horizontal direction.

[0071] Understandably, when the second sliding component 106 slides within the range of the first inclined portion 1041, the movable base 101 changes its angle at a relatively high rate, providing the user with a strong sense of weightlessness and enhancing the user experience. When the second sliding component 106 slides within the range of the second inclined portion 1042, the movable base 101 changes its angle at a relatively low rate to reduce the user's sense of weightlessness and allow the user to gradually transition to a lying position.

[0072] To accommodate the first inclined portion 1041 and the second inclined portion 1042, the second base guard plate 302 includes a first protective portion 501 and a second protective portion 502. The first protective portion 501 covers the first inclined portion 1041, and the second protective portion 502 covers the second inclined portion 1042. It is understood that the inclination angle of the first protective portion 501 is adapted to the first inclined portion 1041, and the inclination angle of the second protective portion 502 is also adapted to the second inclined portion 1042.

[0073] like Figure 7 and Figure 9 As shown, in some examples, the first inclined portion 1041 has an inclination angle α of 15° to 33° relative to the horizontal direction, and the second inclined portion 1042 has an inclination angle β of 5° to 18° relative to the horizontal direction. Therefore, the first protective portion 501 also has an inclination angle of 15° to 33° relative to the horizontal direction, and the second protective portion 502 also has an inclination angle of 5° to 18° relative to the horizontal direction.

[0074] like Figure 5 , Figure 6 and Figure 8As shown, in some examples, the second base guard plate 302 further includes a second mounting structure 503, through which the second base guard plate 302 is mounted to the fixed base 102. Furthermore, at least one second mounting structure 503 is provided.

[0075] Specifically, two second mounting structures 503 are provided, both located at the end of the second base guard plate 302 near the rear of the seat frame to ensure the connection strength between the second base guard plate 302 and the fixed base 102. In the first protective part 501 and the second protective part 502, the first protective part 501 is closer to the rear of the seat frame, while the second protective part 502 is closer to the front of the seat frame; therefore, the two second mounting structures 503 are located in the first protective part 501.

[0076] The second mounting structure 503 needs to be fitted to the fixed base 102. At the same time, a second gap 506 needs to be reserved between the first protective part 501 and the second protective part 502 and the base. The second gap 506 is used to accommodate the second sliding part 106, to prevent the second sliding part 106 from contacting the first protective part 501 and the second protective part 502, and to ensure that the second sliding part 106 slides smoothly.

[0077] Therefore, the second mounting structure 503 is connected to the first protective part 501 through the second folded edge 504, so that the first protective part 501 and the second mounting structure 503 are not on the same plane. Under the premise that the second mounting structure 503 is attached to the fixed base 102, the second folded edge 504 allows a second gap 506 to be left between the first protective part 501 and the second protective part 502 and the fixed base 102.

[0078] In some examples, the second mounting structure 503 is provided with a second fastener connection structure 505, which is used to set fasteners, so that the second base guard plate 302 is mounted to the fixed base 102 by fasteners.

[0079] Specifically, the second fastener connection structure 505 can adopt a hole structure.

[0080] In some examples, the first protective part 501 extends a certain distance toward the rear of the seat frame, and the second mounting structure 503 is connected to the portion of the first protective part 501 that extends toward the rear of the seat frame via a second flange 504.

[0081] It is understandable that the second base guard plate 302 can be designed according to the specific shape of the second guide structure 104 to ensure that the second base guard plate 302 can cover the second guide structure 104, thereby protecting the second guide structure 104.

[0082] like Figure 5 , Figure 6 , Figure 10and Figure 11 As shown, in some examples, the second base guard plate 302 also includes a slot 507 located at one end of the second base guard plate 302 near the front of the seat frame, i.e., the slot 507 is located in the second protective part 502. Therefore, the slot 507 and the second mounting structure 503 are located at opposite ends of the second base guard plate 302, together ensuring the connection between the second base guard plate 302 and the fixed base 102.

[0083] Furthermore, the second protective part 502 is inserted into the fixed base 102 via a slot 507. The fixed base 102 includes an upright plate-like structure, and the slot 507 is inserted into the plate-like structure at the front of the seat frame. During the installation of the second base guard plate 302, the insertion process of the slot 507 is completed first. After the insertion process is completed, the second mounting structure 503 is positioned on the fixed base 102 for connecting fasteners, and the second base guard plate 302 is then connected to the fixed base 102 via fasteners.

[0084] like Figure 10 and Figure 12 As shown, in some examples, the slot 507 is located at the edge of the second protective portion 502. Since the edge of the second base plate 302 is provided with a perimeter 303, the slot 507 extends into the range of the second protective portion 502 based on the perimeter 303. Therefore, the slot 507 is connected to the second protective portion 502 through the perimeter 303, and at the same time, the slot 507 is also connected to the second protective portion 502 through a tab 508.

[0085] Furthermore, the fixed base 102 has a socket 509 at the position corresponding to the insert 508. When the slot 507 completes the insertion process, the insert 508 is inserted into the socket 509. On the one hand, the insert 508 ensures the connection strength between the slot 507 and the second protective part 502; on the other hand, the insert 508 limits the insertion process between the slot 507 and the fixed base 102 by inserting into the socket 509, ensuring that the second base guard plate 302 can be inserted in the correct position.

[0086] like Figure 7 and Figure 13 As shown, in some examples, the leg support mechanism 200 further includes a leg link mounting member 203, which is hinged to the second leg link 202, and the leg protection member 600 extends to the leg link mounting member 203. Therefore, the leg protection member 600 can protect both the second leg link 202 and the leg link mounting member 203.

[0087] like Figure 14 and Figure 15As shown, the leg protection component 600 is formed into a plate-like structure, and the leg protection component 600 is provided with a rotating connection part 601. The leg protection component 600 is rotatably connected to the second leg link 202 through the rotating connection part 601.

[0088] Furthermore, the rotating connection part 601 is fixedly provided with a screw 602, and the second leg connecting rod 202 is provided with a hole structure for installing the screw 602. The screw 602 is screwed into the hole structure here to ensure the connection of the leg protection component 600.

[0089] Understandably, during the screwing process of the screw 602, as the leg protection component 600 rotates, the distance between the leg protection component 600 and the second leg connecting rod 202 changes, thus the distance between the leg protection component 600 and the second leg connecting rod 202 can be adjusted.

[0090] In some examples, the leg protection component 600 also includes a fixing connection portion 603 for mounting fasteners. It is understood that the fixing connection portion 603 may have a hole structure. Similarly, the second leg link 202 also has corresponding hole structures for mounting fasteners.

[0091] When the leg protection component 600 rotates under the action of the screw 602, the fixed connection part 603 can correspond to the hole structure of the second leg connecting rod 202, thereby ensuring that the fastener here can fix the leg protection component 600 and the second leg connecting rod 202, and prevent the leg protection component 600 and the second leg connecting rod 202 from moving relative to each other.

[0092] Specifically, the fixed connection 603 is closer to the hinge position between the second leg link 202 and the first leg link 201 than the rotating connection 601.

[0093] In some examples, the leg guard 600 can also provide some protection for the first leg link 201. Since the second leg link 202 is at a certain angle to the first leg link 201, in order to ensure that the leg guard 600 can partially cover the outside of the first leg link 201, the area of ​​the leg guard 600 near the first leg link 201 is larger, while the area of ​​the leg guard 600 near the leg link mounting component 203 is smaller.

[0094] Specifically, the shape of the leg protection component 600 needs to be set according to the shape of the second leg link 202 so that the two can match each other.

[0095] In some examples, the leg protection component 600 extends to the hinge position of the first leg link 201 and the second leg link 202 to provide adequate protection for the first leg link 201 and the second leg link 202.

[0096] Furthermore, the leg protection component 600 also includes a hollow portion 604, which is used to avoid the hinge position of the first leg link 201 and the second leg link 202. It is understood that, to ensure the hinge relationship between the first leg link 201 and the second leg link 202, the first leg link 201 and the second leg link 202 will have rotating connecting components such as rivets at the hinge position. These rotating connecting components will protrude from the surfaces of the first leg link 201 and the second leg link 202. The hollow portion 604 is used to accommodate these rotating connecting components, thereby preventing structural interference between the leg protection component 600 and the rotating connecting components.

[0097] In some examples, the leg protection component 600 has several reinforcing ribs 605 on the side facing the second leg link 202, and the reinforcing ribs 605 are arranged in an alternating manner to improve the structural strength of the leg protection component 600.

[0098] In actual implementation, the first base guard plate 301 is fixedly connected to the fixed base 102 by fasteners, and covers the first guide structure 103 inside. At the same time, the first base guard plate 301 also reserves space for the installation of the first sliding component 105, which fully protects the sliding connection process of the first guide structure 103 and the first sliding component 105, and prevents objects and dust from the external environment from entering this part of the seat frame structure.

[0099] Furthermore, the second base plate 302 is inserted into the fixed base 102 via a slot 507 and is fixedly connected to the fixed base 102 via fasteners. The second base plate 302 covers the second guide structure 104 internally, and also reserves space for the second sliding component 106, fully protecting the sliding connection process of the second guide structure 104 and the second sliding component 106, and preventing objects and dust from the external environment from entering this part of the seat frame structure.

[0100] Furthermore, the leg protection component 600 is rotatably connected to the second leg link 202 via a fixed screw 602. During rotation, the distance between the leg protection component 600 and the second leg link 202 can be adjusted. After rotating to the appropriate position, the leg protection component 600 is fixedly connected to the second leg link 202 via fasteners on the fixed connection part 603, thereby covering the outside of the leg support mechanism 200, fully protecting the leg connection mechanism and preventing objects and dust in the external environment from affecting its movement.

[0101] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A seat frame protective structure, characterized in that, include: The base assembly includes a movable base and a fixed base slidably connected by a guide assembly; A leg support mechanism, the leg support mechanism including a first leg link hinged to the movable base and a second leg link hinged to the first leg link; A base protection assembly is installed on the fixed base and covers the outside of the guide assembly.

2. The seat frame protective structure according to claim 1, characterized in that, The guiding assembly includes a first guiding structure and a second guiding structure disposed on the fixed base, and the base protection assembly includes a first base guard plate covering the first guiding structure and a second base guard plate covering the second guiding structure.

3. The seat frame protective structure according to claim 2, characterized in that, Both the first base guard plate and the second base guard plate have bent edgings at their edges, and the first base guard plate and the second base guard plate abut against the fixed base through the edgings.

4. The seat frame protective structure according to claim 2, characterized in that, The first base guard plate includes a base body and at least two first mounting structures. Each of the first mounting structures, which is attached to the fixed base, is connected to the base body through a first folded edge to ensure that a first gap is left between the base body and the fixed base. Each of the first mounting structures is provided with a first fastener connection structure, and the first base guard plate is installed on the fixed base through fasteners.

5. The seat frame protective structure according to claim 2, characterized in that, The second guide structure includes a first inclined portion and a second inclined portion that are connected to each other. The second base guard plate includes a first protective portion covering the first inclined portion and a second protective portion covering the second inclined portion. The first protective portion has an inclination angle of 15° to 33° relative to the horizontal direction, and the second protective portion has an inclination angle of 5° to 18° relative to the horizontal direction.

6. The seat frame protective structure according to claim 5, characterized in that, The second base guard plate also includes at least one second mounting structure. The second mounting structure, which is attached to the fixed base, is disposed on the first protective part. The second mounting structure is connected to the first protective part through a second folded edge to ensure that a second gap is left between the first protective part and the second protective part and the fixed base. The second mounting structure is provided with a second fastener connection structure, and the first protective part is installed on the fixed base through fasteners.

7. The seat frame protective structure according to claim 5, characterized in that, The second base guard plate also includes a slot disposed in the second protective part, through which the second protective part is inserted into the fixed base.

8. The seat frame protective structure according to claim 7, characterized in that, The slot is provided with a insert for connecting the second protective part, and the fixing base is provided with a socket, the insert being used to insert into the socket.

9. The seat frame protective structure according to claim 1, characterized in that, A leg protection component, which is mounted on the second leg link and covers the outside of the leg support mechanism; The leg support mechanism further includes a leg link mounting component hinged to the second leg link, and the leg protection component connected to the second leg link extends to the leg link mounting component. The leg protection component is provided with a rotating connection part, and a screw is fixedly installed on the rotating connection part. The leg protection component is rotatably connected to the second leg link through the screw. The leg protection component is provided with a fixed connection part for installing fasteners. The leg protection component is fixedly connected to the second leg link through fasteners.

10. The seat frame protective structure according to claim 9, characterized in that, The leg protection component also has a hollowed-out section, which is used to avoid the hinge position of the first leg link and the second leg link.

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