Dining chair with adjustable cushion hardness

Abstract

The utility model relates to the technical field of dining chairs, and discloses a dining chair with a cushion adjustable in hardness, which comprises a chair seat, the top of the chair seat is fixedly connected with connecting leather, the top of the connecting leather is fixedly connected with the cushion, the top of the chair seat is fixedly connected with a back cushion, and the bottom of the cushion is provided with a buffer mechanism. The adjusting and fixing mechanism comprises an adjusting assembly and a fixing assembly, through the arranged adjusting and fixing mechanism, a pulling plate is manually pulled, the pulling plate synchronously drives a limiting block to be completely separated from a limiting sleeve, pressing plates on the two sides are pressed by two hands, then the limiting block is pushed to move towards the interior of a connecting sleeve, and at the moment, a sliding sleeve is synchronously driven to move; and the connecting plate synchronously drives the cushion to move downwards, so that the hardness of the seat is changed, the springback space of the second spring is reduced, the springback effect of the cushion is reduced, manual bending and twisting are not needed in the adjusting process, the head of a person is prevented from being collided, and rapid adjustment and use are facilitated.

Description

A dining chair with adjustable seat cushion firmness Technical Field

[0001] This utility model relates to the field of dining chair technology, specifically a dining chair with adjustable seat cushion firmness. Background Technology

[0002] Dining chairs are chairs specifically designed for dining and are a type of restaurant furniture. Dining chairs have a safe and simple structural design, making them convenient for people to sit on while eating. Different users have different needs for the softness and firmness of the seat cushion. People who sit for long periods of time may need a softer seat cushion to distribute pressure, while users who seek support prefer a firmer seat cushion. With the softness and firmness adjustment function, dining chairs can adapt to different body types, sitting habits, and usage scenarios, improving user comfort.

[0003] According to the patent application published on the Internet, a dining chair with adjustable seat cushion firmness (authorization announcement CN 221307710 U) is described as follows: "A dining chair with adjustable seat cushion firmness includes a main body of the dining chair. The main body of the dining chair includes a support, legs, backrest, support plate, connecting rod, spring, screw, screw cap, sliding cavity, telescopic sliding rod and seat cushion. The legs are installed on both sides of the bottom of the support by screws. The backrest is installed on the back of the support by screws. The support plate is arranged parallel to the top of the support."

[0004] Regarding the above description, the applicant believes the following issues exist:

[0005] In use, this utility model involves rotating the screw cap in the opposite direction to move the screw downwards until the telescopic slide pulls the support plate downwards, thereby reducing the distance between the support plate and the support, decreasing the spring's rebound space, and thus reducing the cushion's rebound effect. This allows the main body of the dining chair to be adjusted to a firmer seating feel. However, in actual use, because the screw cap is located at the bottom of the seat, and the device requires manual rotation to adjust the firmness, it necessitates bending over and reaching out to twist it repeatedly. Furthermore, since the dining chair is usually located next to the dining table, bending over during the adjustment process can easily cause the user's head to be bumped, making it difficult to adjust and use quickly. Therefore, an improved dining chair with an adjustable seat firmness is needed. Summary of the Invention

[0006] The purpose of this invention is to provide a dining chair with an adjustable seat cushion firmness to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dining chair with adjustable seat cushion firmness, comprising a seat, a connecting leather fixedly connected to the top of the seat, a seat cushion fixedly connected to the top of the connecting leather, a backrest fixedly connected to the top of the seat, a cushioning mechanism provided at the bottom of the seat cushion, and an adjustment and fixing mechanism provided at the bottom of the cushioning mechanism.

[0008] The adjusting and fixing mechanism includes an adjusting component and a fixing component, wherein the fixing component is disposed inside the adjusting component;

[0009] The cushioning mechanism includes a connecting plate, which is fixedly connected to the bottom of the seat cushion. A guide post is fixedly connected to the bottom of the connecting plate, and a limit plate is fixedly connected to the bottom of the guide post. A spring is fixedly connected between the connecting plate and the seat to provide users with a comfortable level of firmness.

[0010] Preferably, a hole is provided at the corresponding position of the chair seat and the guide post, and the guide post is slidably connected in the hole to facilitate restricting the movement of the guide post.

[0011] Preferably, the adjustment component includes a connecting column, which is fixedly connected to the bottom of the connecting plate. A sliding sleeve is slidably connected to the outside of the connecting column. A pressure rod is fixedly connected to the bottom of the sliding sleeve. A connecting sleeve is fixedly connected to the top of the pressure rod. A pressure plate is fixedly connected to the front of the connecting sleeve. Fixing blocks are fixedly connected to the left and right sides of the chair seat. A limit sleeve is fixedly connected to the front of the fixing block, which facilitates adjusting the firmness according to needs.

[0012] Preferably, a hole is provided at the corresponding position of the seat and the sliding sleeve, and the sliding sleeve is slidably connected in the hole to facilitate restricting the movement of the sliding sleeve.

[0013] Preferably, the sliding sleeve has a groove at the position corresponding to the connecting column, and the connecting column is slidably connected in the groove. The limiting sleeve has multiple grooves inside to facilitate pulling the connecting column.

[0014] Preferably, the fixing component includes a limiting block, which is slidably connected inside the connecting sleeve. A pull plate is fixedly connected to the top of the limiting block, and a spring is fixedly connected between the limiting block and the connecting sleeve. A baffle is slidably connected inside the connecting sleeve to facilitate adjustment of the appropriate fixing position as needed.

[0015] Preferably, a groove is provided at the corresponding position of the limiting sleeve and the limiting block, and the limiting block is inserted into the groove to facilitate fixing the position of the connecting sleeve.

[0016] Compared with the prior art, this utility model provides a dining chair with adjustable seat cushion firmness, which has the following beneficial effects:

[0017] 1. This dining chair with adjustable seat cushion firmness uses an adjustable fixing mechanism. By manually pulling the pull plate, the pull plate simultaneously moves the limiting block completely away from the limiting sleeve. Pressing the pressure plates on both sides pushes the limiting block into the connecting sleeve, which in turn moves the sliding sleeve. This causes the connecting plate to move the seat cushion downwards, thus changing the seat firmness and reducing the rebound space of the second spring, thereby reducing the rebound effect of the seat cushion. Furthermore, the adjustment process does not require manual bending or twisting, preventing head injuries and facilitating quick adjustment and use.

[0018] 2. This dining chair with adjustable seat cushion firmness uses a cushioning mechanism that, during adjustment, simultaneously moves the connecting plate downwards, causing the connecting plate to move the guide column, thereby compressing the spring and changing the distance between the seat cushion and the chair seat. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a schematic diagram of the appearance structure of this utility model;

[0021] Figure 2 is a front sectional view of the present invention.

[0022] Figure 3 is a schematic diagram of the external structure of the adjustment and fixing mechanism of this utility model;

[0023] Figure 4 is a schematic diagram of the unfolded structure of the adjustment component of this utility model;

[0024] Figure 5 is a schematic diagram of the appearance structure of the fixing component of this utility model;

[0025] Figure 6 is a schematic diagram of the external structure of the buffer mechanism of this utility model.

[0026] In the diagram: 1. Seat; 2. Connecting leather; 3. Seat cushion; 4. Backrest cushion; 5. Adjustment and fixing mechanism; 6. Buffer mechanism; 51. Adjustment component; 52. Fixing component; 511. Connecting column; 512. Sliding sleeve; 513. Pressure rod; 514. Connecting sleeve; 515. Pressure plate; 516. Fixing block; 517. Limiting sleeve; 521. Limiting block; 522. Pull plate; 523. Spring 1; 524. Baffle; 61. Connecting plate; 62. Guide column; 63. Limiting plate; 64. Spring 2. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Embodiments

[0029] Based on the existing technology, since the nut is located at the bottom of the seat, and the device requires manual rotation to adjust the firmness, it is necessary to bend over and reach out to twist it repeatedly. Furthermore, since the dining chair is usually located next to the dining table, the person's head is easily bumped during the bending process, which is not conducive to quick adjustment and use. Please refer to Figures 1-6. This utility model provides a technical solution: a dining chair with adjustable seat firmness, including a seat 1, a connecting leather 2 fixedly connected to the top of the seat 1, a seat cushion 3 fixedly connected to the top of the connecting leather 2, a backrest 4 fixedly connected to the top of the seat 1, a cushioning mechanism 6 provided at the bottom of the seat cushion 3, and an adjustment and fixing mechanism 5 provided at the bottom of the cushioning mechanism 6;

[0030] The adjusting and fixing mechanism 5 includes an adjusting component 51 and a fixing component 52, with the fixing component 52 disposed inside the adjusting component 51.

[0031] Furthermore, the adjustment component 51 includes a connecting column 511, which is fixedly connected to the bottom of the connecting plate 61. A sliding sleeve 512 is slidably connected to the outside of the connecting column 511. A pressure rod 513 is fixedly connected to the bottom of the sliding sleeve 512. A connecting sleeve 514 is fixedly connected to the top of the pressure rod 513. A pressure plate 515 is fixedly connected to the front of the connecting sleeve 514. Fixing blocks 516 are fixedly connected to the left and right sides of the seat 1. A limit sleeve 517 is fixedly connected to the front of the fixing block 516, which facilitates the adjustment of the appropriate softness and hardness according to the needs.

[0032] Furthermore, a hole is provided at the corresponding position of the seat 1 and the sliding sleeve 512, and the sliding sleeve 512 is slidably connected in the hole to facilitate restricting the movement of the sliding sleeve 512.

[0033] Furthermore, the sliding sleeve 512 has a groove at the corresponding position of the connecting post 511, and the connecting post 511 is slidably connected in the groove. The limiting sleeve 517 has multiple grooves inside to facilitate pulling the connecting post 511.

[0034] Furthermore, the fixing component 52 includes a limiting block 521, which is slidably connected inside the connecting sleeve 514. A pull plate 522 is fixedly connected to the top of the limiting block 521. A spring 523 is fixedly connected between the limiting block 521 and the connecting sleeve 514. A baffle 524 is slidably connected inside the connecting sleeve 514 to facilitate adjustment of the appropriate fixing position according to requirements.

[0035] Furthermore, a groove is provided at the corresponding position of the limiting sleeve 517 and the limiting block 521, and the limiting block 521 is inserted into the groove to facilitate fixing the position of the connecting sleeve 514. Example

[0036] Based on the existing technology that requires changing the distance between the cushion 3 and the seat 1, please refer to Figure 6 and in conjunction with Embodiment 1, it is further found that the buffer mechanism 6 includes a connecting plate 61, which is fixedly connected to the bottom of the cushion 3. A guide post 62 is fixedly connected to the bottom of the connecting plate 61, and a limit plate 63 is fixedly connected to the bottom of the guide post 62. A spring 64 is fixedly connected between the connecting plate 61 and the seat 1 to provide a comfortable level of softness and firmness for the user.

[0037] Furthermore, holes are provided at the corresponding positions of the seat 1 and the guide post 62, and the guide post 62 is slidably connected in the holes to facilitate restricting the movement of the guide post 62.

[0038] In actual operation, when the device is in use, firstly, when the user sits on the cushion 3, the user can manually open the baffle 524 forward according to the desired firmness. Through the set adjustment and fixing mechanism 5, the user can manually pull the pull plate 522, so that the pull plate 522 synchronously drives the limiting block 521 to completely disengage from the limiting sleeve 517. At the same time, the user presses the pressure plates 515 on both sides, so that the pressure plates 515 synchronously drive the connecting sleeve 514 to move downward. During the downward movement of the connecting sleeve 514, the limiting block 521 moves synchronously. Then, when the pressure plate 515 continues to move downward into the next groove of the limiting sleeve 517, under the elastic force of the spring 523, the limiting block 521 is inserted into the corresponding groove of the limiting sleeve 517. At this time, the sliding sleeve 512 moves synchronously, so that the sliding sleeve 512 synchronously pulls the connecting column 511 to move. In turn, the connecting column 511 synchronously pulls the connecting column 511 to move. The connecting plate 61 moves, thereby synchronously driving the seat cushion 3 downward, which in turn changes the firmness of the seat, reduces the rebound space of the second spring 64, and thus reduces the rebound effect of the seat cushion 3. When other firmness needs to be adjusted, the above operation can be repeated. At the same time, during the later reset process, simply pull the pull plate 522 manually, so that the pull plate 522 synchronously drives the limiting block 521 to completely disengage from the limiting sleeve 517, and then pull the seat cushion 3 upward, so that the seat cushion 3 returns to the initial position. Release the pull plate 522, so that the limiting block 521 is reinserted into the top groove of the limiting sleeve 517. At this time, through the set buffer mechanism 6, during the adjustment process, it synchronously drives the connecting plate 61 downward, so that the connecting plate 61 synchronously drives the guide post 62 to move, thereby compressing the second spring 64 and changing the distance between the seat cushion 3 and the seat 1.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A dining chair with adjustable cushion firmness, comprising a seat (1), characterized in that: The top of the seat (1) is fixedly connected to a connecting leather (2), the top of the connecting leather (2) is fixedly connected to a cushion (3), the top of the seat (1) is fixedly connected to a backrest (4), the bottom of the cushion (3) is provided with a buffer mechanism (6), the bottom of the buffer mechanism (6) is provided with an adjustment and fixing mechanism (5); the adjustment and fixing mechanism (5) includes an adjustment component (51) and a fixing component (52), the fixing component (52) is located inside the adjustment component (51); the buffer mechanism (6) includes a connecting plate (61), the connecting plate (61) is fixedly connected to the bottom of the cushion (3), the bottom of the connecting plate (61) is fixedly connected to a guide post (62), the bottom of the guide post (62) is fixedly connected to a limit plate (63), and a spring (64) is fixedly connected between the connecting plate (61) and the seat (1).

2. The dining chair with adjustable seat cushion firmness according to claim 1, characterized in that: The seat (1) has a hole at the corresponding position of the guide post (62), and the guide post (62) is slidably connected in the hole.

3. A dining chair with adjustable seat cushion firmness according to claim 1, characterized in that: The adjustment assembly (51) includes a connecting column (511), which is fixedly connected to the bottom of the connecting plate (61). A sliding sleeve (512) is slidably connected to the outside of the connecting column (511). A pressure rod (513) is fixedly connected to the bottom of the sliding sleeve (512). A connecting sleeve (514) is fixedly connected to the top of the pressure rod (513). A pressure plate (515) is fixedly connected to the front of the connecting sleeve (514). Fixing blocks (516) are fixedly connected to the left and right sides of the seat (1). A limit sleeve (517) is fixedly connected to the front of the fixing block (516).

4. A dining chair with adjustable seat cushion firmness according to claim 3, characterized in that: The seat (1) has a hole at the corresponding position of the sliding sleeve (512), and the sliding sleeve (512) is slidably connected in the hole.

5. A dining chair with adjustable seat cushion firmness according to claim 3, characterized in that: The sliding sleeve (512) has a groove at the corresponding position of the connecting post (511), and the connecting post (511) is slidably connected in the groove, and the limiting sleeve (517) has multiple grooves inside.

6. A dining chair with adjustable seat cushion firmness according to claim 3, characterized in that: The fixing component (52) includes a limiting block (521), which is slidably connected inside the connecting sleeve (514). A pull plate (522) is fixedly connected to the top of the limiting block (521). A spring (523) is fixedly connected between the limiting block (521) and the connecting sleeve (514). A baffle (524) is slidably connected inside the connecting sleeve (514).

7. A dining chair with adjustable seat cushion firmness according to claim 6, characterized in that: The limiting sleeve (517) has a groove at the corresponding position of the limiting block (521), and the limiting block (521) is inserted into the groove.

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