Seat base capable of adjusting cushion length
Through the arc-shaped chain and slide structure, combined with the limit groove and slider, the problem of fixed and complicated operation of the seat cushion length is solved, and the smooth adjustment of the seat cushion length and the improvement of the ride comfort are achieved.
Patent Information
- Application Number
- CN202420919789.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The fixed length design of the existing seat cushion leads to different riding comforts for different users, the operation steps are cumbersome, and wear and lag are prone to problems during the adjustment process.
Design a seat base including a curved chain and a slide chute. The chain drives the fabric to bend and adjusts the length of the seat cushion through the slide chute. Set limit slots and slides to ensure stability in sliding. The handle controls the slide movement to achieve adjustment. The chain has deformation Ability to avoid squeezing legs.
It realizes simple and smooth adjustment of the length of the seat cushion, adapts to users of different heights and legs, and improves riding comfort and convenience of use.
Smart Images
Figure CN222129749U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seats, in particular to a seat base with adjustable seat cushion length. Background Art
[0002] The front-to-back length of the seat cushion of an existing chair is usually fixed, and different users have different heights and thigh lengths, so the same chair provides different riding comfort for different users. For example, when a tall user sits on the chair, part of the thigh may be suspended in the air without being supported, and the weight of the suspended part will be borne by the knees, calves and soles of the feet, causing a burden on the legs, making it difficult for the user to sit comfortably.
[0003] The Chinese utility model patent with publication number CN105919328A discloses a seat with adjustable cushion, including a cushion and a cushion frame, the cushion including a seat plate, the seat plate is provided with a row of teeth, the row of teeth opens downward, the cushion frame is provided with a positioning pin, the row of teeth buckles the positioning pin downward, after the seat plate is lifted upward, the length of the cushion can be adjusted by moving forward or backward, the rear end of the front and rear telescopic plates is provided with a tooth head, and the front end of the seat plate is provided with a bar tooth corresponding to it, the tooth head and the bar tooth mesh, the front and rear telescopic plates are telescoped forward and backward through the tooth head and the rack to change the length of the cushion. The problems of the prior art are: there are many operating steps, which is inconvenient, and the row of teeth and the rack are easily worn during repeated use, resulting in jamming and non-smooth adjustment.
[0004] Therefore, the prior art needs to be improved. Utility Model Content
[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a seat base with simple operation and smooth cushion length adjustment.
[0006] The technical solution adopted by the utility model to solve the problem is: a seat base with adjustable cushion length, comprising a base and fabric installed on the base, wherein a slide groove is provided at the bottom of the base;
[0007] It also includes a chain, which is arc-shaped and arranged at the front end of the base, one end of the chain is fixedly connected to the top of the base, and the other end of the chain is slidably connected to the slide groove, and the front end of the fabric is bent downward and fixedly connected to the chain.
[0008] The chain is set into an arc shape that opens backwards. One end of the chain is fixed and the other end of the chain is moved inward. This can drive the fabric to bend toward the rear end of the seat, thereby shortening the length of the cushion, and vice versa to lengthen the cushion. The operation is simple. At the same time, the chain has good deformation ability. It will not squeeze or get stuck when sliding in the slide groove, and the adjustment is smooth.
[0009] As a further improvement of the above technical solution, the chain is composed of a plurality of connecting blocks, two adjacent connecting blocks are hinged to each other, and the two adjacent connecting blocks can rotate relative to each other within a certain angle range.
[0010] Every two adjacent connecting blocks can rotate relative to each other within a certain angle range, so the chain can be bent into a structure with an arc-shaped front end and parallel up and down rear ends, which is arranged at the front end of the base. The chain can deform to different degrees according to the sitting posture and the curvature of the legs, so it will not squeeze the legs and knees, thereby improving the comfort of the seat cushion.
[0011] As a further improvement of the above technical solution, a limiting groove is arranged parallel to one side of the slide groove;
[0012] A sliding member is provided at one end of the chain, a slider is provided on the sliding member, a limiting protrusion is provided at the bottom of the slider, the slider is slidably connected in the sliding groove, the limiting protrusion is slidably connected in the limiting groove, and a handle is connected to the outer side of the sliding member.
[0013] The handle controls the slider to move forward and backward to adjust the length of the seat cushion. The cooperation between the limit protrusion and the limit groove can prevent the slider from swinging during the sliding process, thereby ensuring the stability and smoothness of the sliding process of the slider.
[0014] As a further improvement of the above technical solution, the chains and handles are provided on both sides of the front end of the base, and a cross bar is fixedly connected between the two chains. By providing the cross bar, the chains on both sides of the cushion can be synchronously linked to avoid the different telescopic lengths of the fabric on both sides, which affects the comfort and aesthetics of the cushion.
[0015] The beneficial effects of the utility model are as follows: a deformable chain is arranged at the front end of the seat, the chain is fixedly connected to the front part of the fabric, a slider is arranged on the chain, and a slide groove is arranged on the seat base, and by moving the slider, the chain and the fabric can be curled backwards, thereby changing the length of the seat cushion, so that people of different heights and leg lengths can sit comfortably, and the adjustment process is simple and easy to operate, and it is smooth to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods.
[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model;
[0018] Figure 2 It is a three-dimensional exploded view of a preferred embodiment of the utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the utility model without the cushion;
[0020] Figure 4 It is a structural schematic diagram of the cooperation between the slider and the slide groove of the utility model.
[0021] In the figure: 1-base, 11-slide groove, 12-limiting groove, 2-chain, 21-connecting block, 22-sliding member, 221-sliding block, 222-limiting protrusion, 3-handle, 4-cross bar, 5-fabric. DETAILED DESCRIPTION
[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0026] Reference Figure 1 , Figure 2 and Figure 4 A seat base with adjustable cushion length includes a base 1 and a fabric 5, the fabric 5 is covered on the base 1, a slide groove 11 is provided at the bottom of the front end of the base 1, and a limiting groove 12 is provided parallel to one side of the slide groove 11.
[0027] In a preferred embodiment, reference Figure 3, and also includes a chain 2, which is composed of multiple connecting blocks 21, and two adjacent connecting blocks 21 are rotatably connected. The chain 2 is in an arc shape opening backward and is arranged at the front end of the base 1. The front end of the fabric 5 is bent downward and fixedly connected to the chain 2.
[0028] Reference Figure 4 One end of the chain 2 is fixedly connected to the top of the base 1, and the other end of the chain 2 is provided with a sliding member 22, on which a slider 221 is provided, and a limiting protrusion 222 is provided at the bottom of the slider 221, the slider 221 is slidably connected to the slide groove 11, and the limiting protrusion 222 is slidably connected to the limiting groove 12, and a handle 3 is connected to the outside of the sliding member 22, and the handle 3 is used to control the slider 221 to slide forward and backward in the slide groove 11, thereby controlling the telescopic length of the fabric 5.
[0029] Reference Figure 3 Chains 2 and handles 3 are symmetrically arranged on both sides of the front end of the base 1, and a cross bar 4 is fixedly connected between the two chains 2. By setting the cross bar 4, the two chains 2 can be synchronously linked.
[0030] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A seat base with adjustable cushion length, comprising a base (1) and a fabric (5) mounted on the base (1), characterized in that: The bottom of the base (1) is provided with a slide groove (11); It also comprises a chain (2), the chain (2) being arc-shaped and arranged at the front end of the base (1), one end of the chain (2) being fixedly connected to the top of the base (1), the other end of the chain (2) being slidably connected to the slide groove (11), and the front end of the fabric (5) being bent downward and fixedly connected to the chain (2).
2. A seat base with adjustable seat cushion length as claimed in claim 1, characterized in that: The chain (2) is composed of a plurality of connection blocks (21) spliced together, two adjacent connection blocks (21) are hinged to each other, and the two adjacent connection blocks (21) can rotate relative to each other within a certain angle range.
3. A seat base with adjustable seat cushion length as claimed in claim 2, characterized in that: A limiting groove (12) is arranged parallel to one side of the slide groove (11); A sliding member (22) is provided at one end of the chain (2), a slider (221) is provided on the sliding member (22), a limiting protrusion (222) is provided at the bottom of the slider (221), the slider (221) is slidably connected in the sliding groove (11), the limiting protrusion (222) is slidably connected in the limiting groove (12), and a handle (3) is connected to the outside of the sliding member (22).
4. A chair base with adjustable seat cushion length as claimed in claim 1, characterized in that: The chains (2) and handles (3) are provided on both sides of the front end of the base (1), and a crossbar (4) is fixedly connected between the two chains (2).