Chassis structure for seat and seat

Abstract

The utility model discloses a chassis structure for a seat and the seat, and the chassis structure comprises a connecting component which is arranged on a base of the seat and / or a seat back structure; a seat frame provided on the connecting member so as to be slidable in the front-rear direction of the seat; the locking mechanism is arranged between the seat frame and the connecting component; wherein the locking mechanism has a locking state and an unlocking state, the seat frame is fixed relative to the connecting component when the locking mechanism is in the locking state, and the seat frame can slide relative to the connecting component when the locking mechanism is in the unlocking state. According to the invention, the slidable state change of the seat frame relative to other parts of the seat can be realized by utilizing the state switching of the locking mechanism. When the locking mechanism is in a locking state, the seat frame is fixed relative to other parts of the seat, so that a user can sit normally; when the locking mechanism is in the unlocking state, the seat frame can slide relative to other parts of the seat, and a user can conveniently adjust the front-back position of the seat.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, specifically to a chassis structure and seat for use as a seat. Background Technology

[0002] Users of different heights and body types have different requirements for the relative position of the seat frame to their knees and ankles. For example, taller users need the seat frame to be relatively far back to avoid pressure on the front edge of their thighs, while shorter users need the seat frame to be relatively far forward to ensure their feet can land stably. Most existing chairs have a seat frame that is fixed relative to the base or backrest, or a backrest that can rotate relative to the seat frame, but users cannot adjust the fore-aft position of the seat frame according to their own needs. Utility Model Content

[0003] The purpose of this utility model is to provide a chassis structure and seat for a seat, which can adjust the position of the seat frame relative to other parts of the seat in the front-back direction of the seat.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A chassis structure for a seat, the chassis structure comprising:

[0006] Connecting components, which are disposed in the base and / or backrest structure of the seat;

[0007] A seat frame, which is slidably disposed on the connecting member along the fore-and-aft direction of the seat; and,

[0008] A locking mechanism is provided between the seat frame and the connecting member;

[0009] The locking mechanism has a locked state and an unlocked state. When the locking mechanism is in the locked state, the seat frame is fixed relative to the connecting member. When the locking mechanism is in the unlocked state, the seat frame can slide relative to the connecting member.

[0010] Preferably, the connecting member is elongated and has multiple slots along its length, and the locking mechanism includes:

[0011] A connecting seat, which is fixedly mounted on the seat frame;

[0012] A locking block having a locking portion adapted to the locking slot, and the locking block being slidably disposed on the connecting seat; and,

[0013] An elastic element is disposed between the connecting seat and the locking block, and the locking portion applies pressure to the locking block with a tendency to engage with the locking slot.

[0014] The locking mechanism is in a locked state when the latching part is engaged with the slot, and in an unlocked state when the latching part is disengaged from the slot.

[0015] Preferably, the connector has a cavity and a first opening and a second opening communicating the cavity with the outside. The locking block is slidably disposed in the cavity, and the locking part can extend out of the cavity through the first opening.

[0016] Preferably, the connecting seat includes a connecting block with a groove and a cover plate detachably disposed on the connecting block, the cover plate cooperating with the connecting block to enclose the cavity at the groove.

[0017] Preferably, the inner wall of the cavity is formed with a first limiting step, and the locking block is formed with a second limiting step adapted to the first limiting step. The second limiting step is used to cooperate with the first limiting step to restrict the locking block from sliding out of the cavity.

[0018] Preferably, the locking mechanism further includes a transmission member fixedly connected to the locking block, the transmission member having an operating end that extends from the second opening to the outside of the cavity, and the transmission member being configured to drive the locking block out of the slot when the operating end is subjected to external pressure.

[0019] Preferably, the transmission component is a flexible rope.

[0020] Preferably, the seat frame has a sliding hole extending along the length of the seat, and the connecting member includes a long strip-shaped base portion and a protrusion formed in the base portion. The protrusion extends into the sliding hole and slides with the inner wall of the sliding hole to limit the sliding direction of the seat frame.

[0021] Preferably, the chassis structure further includes a limiting plate, the limiting plate including a main body portion for detachable connection with the connecting member and a limiting portion formed in the main body portion, the limiting portion slidingly contacting portions on both sides of the sliding hole on the seat frame to restrict the seat frame from detaching from the connecting member.

[0022] In addition, to achieve the above objectives, the present invention also adopts the following technical solution:

[0023] A seat includes a base and a backrest structure disposed on the base, the seat also includes the chassis structure, and the connecting member is disposed on the base and / or the backrest structure.

[0024] Compared to existing technologies, the advantages of this invention are as follows: a locking mechanism is provided between the seat frame and the connecting component, and the sliding state of the seat frame relative to other parts of the seat can be changed by switching the state of the locking mechanism. When the locking mechanism is in the locked state, the seat frame remains fixed relative to other parts of the seat, facilitating normal user seating; when the locking mechanism is in the unlocked state, the seat frame can slide relative to other parts of the seat, facilitating user adjustment of the seat's fore-and-aft position. Attached Figure Description

[0025] Figure 1 A schematic diagram of a chassis structure for a seat provided in an embodiment of this application;

[0026] Figure 2 A structural schematic diagram of the chassis structure from another perspective;

[0027] Figure 3 This is an exploded view of the chassis structure;

[0028] Figure 4 An exploded view of the locking mechanism;

[0029] Figure 5 This is a sectional view of the chassis structure;

[0030] Figure 6 This is a structural diagram of a seat using the chassis structure provided in this embodiment.

[0031] Among them, 1. Seat frame; 10. Sliding hole; 2. Connecting component; 20. Base part; 200. Slot; 21. Protrusion; 3. Locking mechanism; 30. Connecting seat; 300. Connecting block; 301. Cover plate; 302. Cavity; 303. First opening; 304. Second opening; 305. First limiting step; 31. Locking block; 310. Locking part; 311. Second limiting step; 32. Elastic element; 4. Limiting plate; 40. Main body part; 41. Limiting part; 5. Base; 6. Chair back structure. Detailed Implementation

[0032] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in 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.

[0033] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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 on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] This embodiment provides a chassis structure for a seat, such as Figure 1 , Figure 2 and Figure 3 As shown, the chassis structure includes a connecting member 2, a seat frame 1, and a locking mechanism 3. The seat frame 1 is slidably mounted on the connecting member 2 along the front-to-back direction of the seat, and the locking mechanism 3 is located between the seat frame 1 and the connecting member 2. The locking mechanism 3 has a locked state and an unlocked state. When the locking mechanism 3 is in the locked state, the seat frame 1 is fixed relative to the connecting member 2; when the locking mechanism 3 is in the unlocked state, the seat frame 1 can slide relative to the connecting member 2. Figure 6 As shown, the connecting member 2 in this embodiment can be used to install with one or both of the seat base 5 and the seat back structure 6.

[0036] The chassis structure provided in this embodiment has a locking mechanism 3 between the seat frame 1 and the connecting member 2. The locking mechanism 3 can be used to change the sliding state of the seat frame 1 relative to other parts of the seat. When the locking mechanism 3 is locked, the seat frame 1 remains fixed relative to other parts of the seat, making it easy for the user to sit and lean back normally; when the locking mechanism 3 is unlocked, the seat frame 1 can slide relative to other parts of the seat, making it easy for the user to adjust the fore-aft position of the seat.

[0037] It should be noted that the connecting member 2 can be fixedly installed with the seat base 5 and / or the seat back structure 6, so that the seat frame 1 can only slide relative to the base 5 or the seat back structure 6 in the fore-and-aft direction of the seat when the locking mechanism 3 is in the unlocked state. Alternatively, the connecting member 2 can also be hinged to the seat base 5 and / or the seat back structure 6, so that the seat frame 1 can not only slide relative to the base 5 or the seat back structure 6 in the fore-and-aft direction of the seat when the locking mechanism 3 is in the unlocked state, but also swing relative to the base 5 or the seat back structure 6 through the connecting member 2 when the locking mechanism 3 is in the locked state, to meet the user's reclining needs.

[0038] It is easy to understand that in this embodiment, "back" in the front-back direction of the seat refers to the side where the seat back structure 6 is located, and "front" is opposite to "back". Alternatively, the "front" can be defined as the direction in which the user normally sits on the seat and looks, and the "back" can be defined as the side where the user's back is located.

[0039] Combination Figure 3 and Figure 4 As shown, the connecting member 2 in this embodiment is elongated, and multiple slots 200 are provided along its length. The locking mechanism 3 in this embodiment includes a connecting seat 30, a locking block 31, and an elastic member 32. The connecting seat 30 is fixedly mounted on the seat frame 1, the locking block 31 has a locking portion 310 adapted to the slot 200, and the locking block 31 is slidably mounted on the connecting seat 30. The elastic member 32 is disposed between the connecting seat 30 and the locking block 31 and applies pressure to the locking block 31 such that the locking portion 310 tends to engage with the slot 200. The locking mechanism 3 is in a locked state when the locking portion 310 engages with the slot 200, and in an unlocked state when the locking portion 310 disengages from the slot 200.

[0040] By providing a locking part 310 that engages with multiple slots 200 distributed along the length of the connecting member 2, multiple adjustment positions can be provided, allowing the seat frame 1 to be adjusted to various positions to meet the personalized needs of users of different heights. Generally, the number of slots 200 is between 10 and 15, with the spacing between adjacent slots 200 ranging from 0.5 cm to 2 cm. Furthermore, because the elastic element 32 continuously applies pressure to the locking block 31, it ensures that the locking part 310 remains engaged within the slots 200 in the locked state, preventing the seat frame 1 from loosening due to vibration or force, thus providing excellent stability.

[0041] Furthermore, in this embodiment, the connecting seat 30 has a cavity 302 and a first opening 303 and a second opening 304 communicating the cavity 302 with the outside. The locking block 31 is slidably disposed in the cavity 302, and the locking part 310 can extend out of the cavity 302 through the first opening 303. By providing a cavity 302 on the connecting seat 30, the movement direction of the locking block 31 can be limited, ensuring that the sliding movement direction of the locking block 31 relative to the locking groove 200 is stable.

[0042] Specifically, such as Figure 5 As shown, the connecting seat 30 in this embodiment includes a connecting block 300 with a groove and a cover plate 301 detachably disposed on the connecting block 300. The cover plate 301 cooperates with the connecting block 300 to form a cavity 302 in the groove. Designing the connecting seat 30 as a detachably connected two-part structure facilitates the assembly of the locking block 31, the elastic element 32, and the connecting seat 30, and also facilitates the inspection, replacement, and maintenance of the various components in the locking mechanism 3. During assembly, the locking block 31 and the elastic element 32 can be first inserted into the groove of the connecting block 300, and then the cover plate 301 can be installed on the connecting block 300. In this embodiment, the cover plate 301 is locked and fixed to the connecting block 300 with screws, and is also locked and fixed to the seat frame 1 with screws.

[0043] In this embodiment, the elastic element 32 is a compression spring. Specifically, one end of the compression spring abuts against the locking block 31, and the other end of the compression spring abuts against the inner wall of the cavity 302. In other optional embodiments, an elastic body such as a metal sheet or a rubber column can also be used as the elastic element 32.

[0044] Furthermore, in this embodiment, a first limiting step 305 is formed on the inner wall of the cavity 302, and a second limiting step 311 is formed on the locking block 31 to match the first limiting step 305. The second limiting step 311 is used to cooperate with the first limiting step 305 to restrict the locking block 31 from sliding out of the cavity 302. This limiting design ensures that the locking block 31 can never be completely dislodged from the cavity 302, avoiding the failure of the locking mechanism 3 due to the locking block 31 accidentally sliding out of the cavity 302, thus improving the safety and stability of the chassis structure and ensuring the safety of the user during use.

[0045] To facilitate user operation, the locking mechanism 3 in this embodiment also includes a transmission component fixedly connected to the locking block 31. The transmission component has an operating end that extends from the second opening 304 to the outside of the cavity 302. The transmission component is configured to drive the locking block 31 out of the slot 200 when the operating end is subjected to external pressure. By setting the transmission component, the user does not need to directly contact the locking block 31 inside the locking mechanism 3. By simply operating the operating end outside the cavity 302, the user can easily and quickly unlock the locking mechanism 3, greatly improving the convenience of user operation and enhancing the user experience of seat adjustment.

[0046] Specifically, in this embodiment, the transmission component is a flexible rope. The flexible rope possesses excellent flexibility, allowing it to be flexibly arranged within the seat's interior space without affecting the transmission effect, adapting to the design requirements of different seat structures. Furthermore, the flexible rope is lightweight and low-cost, not significantly increasing the overall weight and cost of the seat. During operation, the user only needs to pull the operating end of the flexible rope to disengage the locking block 31 from the locking slot 200. One end of the flexible rope can be fixed to the locking block by adhesive bonding or clamping.

[0047] It is easy to understand that, in some alternative implementations, a rigid long rod can also be used as the transmission component.

[0048] Combination Figure 2 , Figure 3 and Figure 5 As shown, in this embodiment, the seat frame 1 has a sliding hole 10 extending along the length of the seat. The connecting member 2 includes a long strip-shaped base portion 20 and a protrusion 21 formed on the base portion 20. The protrusion 21 extends into the sliding hole 10 and slides against the inner wall of the sliding hole 10 to limit the sliding direction of the seat frame 1. The above structural design can accurately guide the seat frame 1 to slide along the front-back direction of the seat, avoiding deviation or shaking of the seat frame 1 during the sliding process, ensuring the smoothness of the sliding of the seat frame 1, and making the position adjustment process of the seat frame 1 smoother.

[0049] Furthermore, the chassis structure in this embodiment also includes a limiting plate 4. The limiting plate 4 includes a main body 40 for detachable connection with the connecting member 2 and a limiting part 41 formed on the main body 40. The limiting part 41 slides in contact with the portions on both sides of the sliding hole 10 on the seat frame 1 to prevent the seat frame 1 from detaching from the connecting member 2. The setting of the limiting plate 4 further enhances the safety of the chassis structure, preventing the seat frame 1 from accidentally detaching from the connecting member 2 during sliding adjustment and avoiding safety accidents caused by the seat frame 1 falling off. In addition, the detachable connection design of the limiting plate 4 relative to the connecting member 2 facilitates the assembly operation between the limiting plate 4, the connecting member 2 and the seat frame 1.

[0050] The chassis structure provided in this embodiment can be applied to seats, such as... Figure 6 As shown, the seat includes a base 5 and a backrest structure 6 disposed on the base 5. As mentioned earlier, in this embodiment, the connecting member 2 is disposed on both the base 5 and the backrest structure 6. In other optional embodiments, the connecting member 2 may also be disposed separately on the base 5 or separately on the backrest structure 6. This enables the seat to have an adjustable front-to-back position for the seat frame 1, better meeting the needs of different users in different usage scenarios and improving the overall performance and user experience of the seat.

[0051] Finally, it should be noted that the above embodiments are only optional embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A chassis structure for a seat, characterized in that, The chassis structure includes: Connecting components, which are disposed in the base and / or backrest structure of the seat; A seat frame, which is slidably disposed on the connecting member along the fore-and-aft direction of the seat; and, A locking mechanism is provided between the seat frame and the connecting member; The locking mechanism has a locked state and an unlocked state. When the locking mechanism is in the locked state, the seat frame is fixed relative to the connecting member. When the locking mechanism is in the unlocked state, the seat frame can slide relative to the connecting member.

2. The chassis structure as described in claim 1, characterized in that, The connecting member is elongated and has multiple slots along its length. The locking mechanism includes: A connecting seat, which is fixedly mounted on the seat frame; A locking block having a locking portion adapted to the locking slot, and the locking block being slidably disposed on the connecting seat; and, An elastic element is disposed between the connecting seat and the locking block, and the locking portion applies pressure to the locking block with a tendency to engage with the locking slot. The locking mechanism is in a locked state when the latching part is engaged with the slot, and in an unlocked state when the latching part is disengaged from the slot.

3. The chassis structure as described in claim 2, characterized in that, The connector has a cavity and a first opening and a second opening that connect the cavity to the outside. The locking block is slidably disposed in the cavity, and the locking part can extend out of the cavity through the first opening.

4. The chassis structure as described in claim 3, characterized in that, The connector includes a connector block with a groove and a cover plate detachably disposed on the connector block, the cover plate cooperating with the connector block to enclose the cavity at the groove.

5. The chassis structure as described in claim 3, characterized in that, The inner wall of the cavity is formed with a first limiting step, and the locking block is formed with a second limiting step that is adapted to the first limiting step. The second limiting step is used to cooperate with the first limiting step to restrict the locking block from sliding out of the cavity.

6. The chassis structure as described in claim 3, characterized in that, The locking mechanism further includes a transmission member fixedly connected to the locking block. The transmission member has an operating end that extends from the second opening to the outside of the cavity. The transmission member is configured to drive the locking block out of the slot when the operating end is subjected to external pressure.

7. The chassis structure as described in claim 6, characterized in that, The transmission component is a flexible rope.

8. The chassis structure as described in any one of claims 1 to 7, characterized in that, The seat frame has a sliding hole extending along the length of the seat. The connecting member includes a long strip-shaped base portion and a protrusion formed in the base portion. The protrusion extends into the sliding hole and slides with the inner wall of the sliding hole to limit the sliding direction of the seat frame.

9. The chassis structure as described in claim 8, characterized in that, The chassis structure also includes a limiting plate, which includes a main body for detachable connection with the connecting member and a limiting part formed in the main body. The limiting part slides in contact with portions on both sides of the sliding hole on the seat frame to restrict the seat frame from detaching from the connecting member.

10. A seat, comprising a base and a backrest structure disposed on the base, characterized in that, The seat further includes a chassis structure as described in any one of claims 1 to 9, wherein the connecting member is disposed on the base and / or the backrest structure.

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