Seat stool moving and adjusting device

Abstract

The utility model relates to the technical field of seat depth adjusting structures, in particular to a seat stool movement adjusting device which comprises a stool assembly, a backrest assembly and a limiting assembly, the stool assembly comprises a mounting seat, the backrest assembly comprises a cantilever, the limiting assembly is mounted in an inner cavity of the mounting seat, and the cantilever is arranged in the mounting seat. The limiting assembly comprises a locking strip, a locking block and a sliding extrusion part, the locking strip is detachably and fixedly connected with the cantilever, the locking strip extends towards the inner cavity, the locking block is installed on the installation base and arranged on the locking strip in an up-down floating mode, and teeth which are arranged in a staggered mode are arranged on the end faces, in abutting fit with the locking strip, of the locking block. The locking block is provided with an inclined kidney-shaped groove in the vertical direction, cylindrical guide columns are arranged on the two sides of the sliding extrusion part in a protruding mode, the guide columns are arranged in the kidney-shaped groove in a penetrating mode, and when the sliding extrusion part horizontally moves, the locking block is driven to float up and down through extrusion matching of the guide columns and the kidney-shaped groove.

Description

Technical Field

[0001] This utility model relates to the technical field of seat depth adjustment structure, and in particular to a seat and stool movement adjustment device. Background Technology

[0002] In modern society, chairs and benches are indispensable tools in people's daily lives, work, and leisure, and their functionality and comfort are receiving increasing attention. Whether in offices, homes, meeting rooms, school classrooms, or various public places, chairs and benches are used very frequently. From an office perspective, as people spend more time working, higher demands are placed on the comfort and adjustability of office chairs. Maintaining the same posture for extended periods can lead to fatigue and discomfort, and even various health problems. Therefore, devices that allow for flexible adjustment of chair position and height are particularly important. For example, in office environments where frequent interaction with colleagues or group discussions is required, employees need to be able to easily move their chairs to adapt to different work scenarios and collaborative needs. In home life, the usage scenarios for chairs and benches are even more diverse. For instance, in a restaurant, people may need to adjust the position of their chairs according to the number of diners and the table layout; in the living room, a comfortable posture and appropriate chair height can enhance the experience when watching television or engaging in leisure activities. Meanwhile, for people with special needs, such as the elderly or those with mobility impairments, easily adjustable chairs and stools can improve their convenience and independence. However, many chairs and stools on the market today have obvious shortcomings in terms of movement and adjustment, and some chairs have relatively unstable adjustment methods.

[0003] In utility model patent application number 202323061823.9, a seat depth adjustment structure is specifically disclosed, including a fixed part and a movable part. The fixed part is fixedly set, and the movable part is movable relative to the fixed part. The movable part is connected to the seat or backrest of the seat, and drives the seat or backrest to move, thereby adjusting the seat depth. Through the relative movement between the fixed part and the movable part, the seat depth can be adjusted as needed, ensuring that the seat depth adjustment mechanism can effectively improve the applicable range of seat depth and provide users with a better sitting experience.

[0004] However, the above design still has some shortcomings: poor stability, lack of stable positioning structure, friction generated during relative adjustment will cause the surface material to be gradually damaged and removed, and at the same time, contact stress will cause material fatigue and plastic deformation, further aggravating wear and resulting in a short service life.

[0005] Therefore, there is an urgent need for a more efficient, convenient, and stable seat adjustment device to improve the service life of seats. Utility Model Content

[0006] To address the above issues, a more efficient, convenient, and stable seat adjustment device was developed. The limiting component incorporates a locking strip, a locking block, and a sliding extrusion component. The sliding extrusion component drives the locking block to float up and down through the extrusion action of the guide post and the waist-shaped groove. This operation effectively reduces friction and extends the service life.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A seat / stool adjustment device, comprising:

[0009] Seat assembly, backrest assembly and limit assembly

[0010] The stool assembly includes a mounting base for mounting the stool.

[0011] The backrest assembly includes a cantilever that covers the bottom of the mounting base and is movably disposed relative to the mounting base;

[0012] The limiting component is installed in the internal cavity of the mounting base. The limiting component locks the mounting base and the cantilever. The limiting component includes a locking strip, a locking block, and a sliding extrusion member. The locking strip is detachably and fixedly connected to the cantilever. The locking strip extends into the internal cavity. The locking block is installed on the mounting base and floats up and down on the locking strip. The end faces of the locking block and the locking strip that abut against each other are provided with interlocking teeth. The locking block has an obliquely oriented waist-shaped groove in the vertical direction. The sliding extrusion member has cylindrical guide posts protruding on both sides. The guide posts pass through the waist-shaped groove. When the sliding extrusion member moves horizontally, the locking block floats up and down through the extrusion engagement of the guide posts and the waist-shaped groove.

[0013] As an improvement, the mounting base has protrusions on both sides along the length direction, and several rollers are installed on the two side walls of the mounting base.

[0014] As an improvement, a connecting support is provided on the top of the mounting base, which is connected to the stool;

[0015] The mounting base has mounting holes for support feet at the bottom of the connecting support base.

[0016] As an improvement, a groove is provided on the inner side of the cantilever along the length direction, the protrusion is slidably disposed in the groove, and a guide groove is provided parallel above the groove, which is correspondingly matched with the roller.

[0017] As an improvement, the backrest assembly also includes an L-shaped backrest connecting unit, which includes a lifting arm and a connecting arm. The bottom of the connecting arm is connected to the cantilever, and the lifting arm is movable at the top of the connecting arm. The connecting arm is connected to the chair back.

[0018] As an improvement, a fixing post is provided directly below the connection position of the cantilever and the connecting arm, one end of the locking strip is sleeved on the fixing post, and a recessed groove is provided extending directly below the cavity, with the locking strip laid in the recessed groove.

[0019] As an improvement, the limiting component further includes a bottom block and a top block, the bottom block and the top block being fixedly connected, the bottom block and the top block enclosing the locking block and the sliding extrusion member, the bottom block and the top block having a sliding groove for the sliding extrusion member to slide, the bottom block and the top block also having a lifting groove for the locking block to rise and fall, and the bottom of the bottom block also having an opening groove for the locking block to pass through and cooperate with the locking strip.

[0020] As an improvement, the limiting component is also provided with an elastic return element, which is installed between the locking bar and the mounting base, and the elastic return element drives the cantilever to reset.

[0021] As an improvement, the sliding extrusion member is provided with a pull cable groove, in which a pull cable is installed, and the pull cable is connected to the control switch on the seat.

[0022] The beneficial effects of this utility model are as follows:

[0023] (1) The seat and stool moving adjustment device of this utility model improves the limiting component by adopting a locking strip, a locking block and a sliding extrusion component. The locking strip and locking block, together with the extrusion of the sliding extrusion component when moving horizontally, drive the locking block to float up and down, reduce the wear caused by collision, and effectively improve the safety and stability of the seat and stool moving adjustment device.

[0024] (2) By separating the mounting base and the fixed base, the processing difficulty of the mounting base and the fixed base is greatly reduced, the processing cost is also reduced, and the assembly difficulty is also greatly reduced.

[0025] In summary, this utility model has the advantages of low processing cost, precise adjustment, and wide applicability, while also increasing the service life of the seat movement adjustment device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 3 ;

[0029] Figure 4 This is a side view of the structure of this utility model;

[0030] Figure 5 This is a three-dimensional structural diagram of the fixing base of this utility model;

[0031] Figure 6 This is a front view structural diagram of the mounting base of this utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the stool assembly of this utility model;

[0033] Figure 8 This is a schematic diagram of the sliding extrusion component structure of this utility model;

[0034] Figure 9 This is a schematic diagram of the overall formal structure of this utility model;

[0035] Figure 10 This is a three-dimensional structural diagram of the locking block of this utility model;

[0036] Figure 11 This is a schematic diagram of the base block structure of this utility model;

[0037] Figure 12 This is a schematic diagram of the top block structure of this utility model;

[0038] Figure 13 This is a schematic diagram of the locking strip structure of this utility model.

[0039] In the diagram: 1. Stool assembly, 11. Mounting base, 111. Cavity, 112. Protrusion, 113. Connecting support base, 114. Mounting hole, 115. Recessed groove, 12. Roller, 2. Backrest assembly, 21. Cantilever, 211. Slide groove, 212. Guide groove, 22. Backrest connecting unit, 221. Lifting arm, 222. Connecting arm, 223. Fixing column, 3. Limiting assembly, 31. Locking bar, 32. Locking block, 321. Tooth, 322. Waist-shaped groove, 33. Sliding extrusion component, 331. Guide column, 332. Sliding groove, 323. Lifting groove, 334. Opening groove, 34. Bottom block, 35. Top block, 36. Elastic recovery component, 37. Pull cord groove. Detailed Implementation

[0040] 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.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] Example 1:

[0044] like Figures 1 to 13 As shown, a seat / stool movement adjustment device includes a seat / stool assembly 1, a backrest assembly 2, and a limiting assembly 3;

[0045] The stool assembly 1 includes a mounting base 11 for mounting the stool;

[0046] The backrest assembly 2 includes a cantilever 21, which covers the bottom of the mounting base 11 and is movably disposed relative to the mounting base 11.

[0047] The limiting component 3 is installed within the internal cavity 111 of the mounting base 11. The limiting component 3 locks the mounting base 11 and the cantilever 21. The limiting component 3 includes a locking strip 31, a locking block 32, and a sliding pressing member 33. The locking strip 31 is detachably and fixedly connected to the cantilever 21, and extends into the internal cavity 111. The locking block 32 is installed on the mounting base 11 and floats vertically on the locking strip 31. The locking block 32 and the locking strip 31 are provided with interlocking teeth 321 on their respective end faces. The locking block 32 has a waist-shaped groove 322 that is obliquely arranged in the vertical direction. The sliding extrusion member 33 has cylindrical guide posts 331 protruding on both sides. The guide posts 331 pass through the waist-shaped groove 322. When the sliding extrusion member 33 moves horizontally, the locking block 32 is driven to float up and down by the extrusion engagement of the guide posts 331 and the waist-shaped groove 322.

[0048] It should be noted that the main difference between this utility model patent and application number 202323061823.9 lies in the structure of the limiting component 3. The limiting structure in application number 202323061823.9 uses a rotating extruder for extrusion, while the limiting structure in this application uses the sliding extruder 33 to move horizontally. The locking block 32 is driven to float up and down by the extrusion of the guide post 331 and the waist-shaped groove 322. The sliding structure makes the operation more stable, effectively reduces the friction generated during movement, and reduces wear.

[0049] The mounting base 11 has protrusions 112 on both sides along its length, and several rollers 12 are respectively installed on the two side walls of the mounting base 11.

[0050] A connecting support 113 is provided on the top of the mounting base 11, and the connecting support 113 is connected to the stool.

[0051] The mounting base 11 is provided with mounting holes 114 for support feet at the bottom of the connecting support base 113.

[0052] It should be noted that the support foot at the bottom of the mounting base 11 is inserted into the mounting hole 114, and the bottom of the support foot is also connected to the disc base, which is used to support the seat. The top of the connecting support base 113 is fixedly connected to the bottom of the stool.

[0053] The inner side of the cantilever 21 is provided with a sliding groove 211 along the length direction. The protrusion 112 is slidably disposed in the sliding groove 211. A guide groove 212 is provided parallel above the sliding groove 211. The guide groove 212 is correspondingly and cooperatively disposed with the roller 12.

[0054] It should be noted that the precise fit between the roller 12 and the guide groove 212 makes the cantilever 211 and the mounting base 11 more secure and prevents them from becoming loose.

[0055] The backrest assembly 2 also includes an L-shaped backrest connecting unit 22, which includes a lifting arm 221 and a connecting arm 222. The bottom of the connecting arm 222 is connected to the cantilever 21, and the lifting arm 221 is movably positioned at the top of the connecting arm 222. The connecting arm 222 is connected to the chair back.

[0056] It should be noted that a backrest pillow is also fixedly connected to the lifting wall 221, and the backrest pillow is adjusted up and down by the lifting arm 221.

[0057] A fixing post 223 is provided directly below the connection position of the cantilever 21 and the connecting arm 222. One end of the locking strip 31 is sleeved on the fixing post 223. A recessed groove 115 extends directly below the cavity 111, and the locking strip 31 is laid in the recessed groove 115.

[0058] The limiting component 3 also includes a bottom block 34 and a top block 35. The bottom block 34 and the top block 35 are fixedly connected. The bottom block 34 and the top block 35 enclose the locking block 32 and the sliding extrusion member 33. The bottom block 34 and the top block 35 are provided with a sliding groove 332 for the sliding extrusion member 33 to slide. The bottom block 34 and the top block 35 are also provided with a lifting groove 323 for the locking block 32 to rise and fall. The bottom of the bottom block 34 is also provided with an opening groove 334 for the locking block 32 to pass through and cooperate with the locking strip 31.

[0059] The limiting component 3 is also provided with an elastic return member 36, which is installed between the locking bar 31 and the mounting base 11. The elastic return member 36 drives the cantilever 21 to reset.

[0060] The sliding extrusion member 33 is provided with a pull cable groove 37, in which a pull cable is installed, and the pull cable is connected to the control switch on the seat.

[0061] It should be noted that the sliding extrusion member 33 has a pull cable groove 37, in which a pull cable is installed. The pull cable is connected to the control switch on the seat. The sliding movement of the sliding extrusion member 33 can be controlled by the control switch, making it convenient and quick to use.

[0062] Working process: During adjustment, the sliding pressing member 33 must first be used to prevent the locking block 32 from being pressed by it. An elastic return member 36 is provided between the locking block 32 and the mounting base 11. When the locking block 32 is no longer pressed by the sliding pressing member 33, the locking block 32 will rise, completely releasing the engagement between the teeth 321 on the locking block 32 and the teeth on the locking strip 31. At this time, the mounting base 1 and the cantilever 2 are in a free state and can be slidably adjusted. During the process, the sliding pressing member 33 and the locking block 32 are fixed on the mounting base 11, while the locking strip 31 fixed on the cantilever 21 moves with the cantilever 21, and the backrest moves and adjusts to achieve the purpose of adjusting the seat depth. Once the position is adjusted to a suitable position, the sliding pressing member 33 presses the locking block 32 again, so that the teeth 321 on the locking block 32 and the teeth on the locking strip 31 engage and fix again, thus completing the locking of the mounting base 11 and the cantilever 21.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A seat / stool adjustment device, characterized in that, include: Seat assembly (1), backrest assembly (2) and limiting assembly (3) The stool assembly (1) includes a mounting base (11) for mounting the stool; The backrest assembly (2) includes a cantilever (21) which covers the bottom of the mounting base (11) and is movably disposed relative to the mounting base (11); The limiting component (3) is installed in the internal cavity (111) of the mounting base (11). The limiting component (3) locks the mounting base (11) and the cantilever (21). The limiting component (3) includes a locking strip (31), a locking block (32), and a sliding pressing member (33). The locking strip (31) is detachably and fixedly connected to the cantilever (21). The locking strip (31) extends into the internal cavity (111). The locking block (32) is installed on the mounting base (11) and floats up and down on the locking strip (31). On the locking block (32), teeth (321) are provided on the end face of the locking block (32) that abut against the locking strip (31). The locking block (32) has a waist-shaped groove (322) that is obliquely arranged in the vertical direction. The sliding extrusion member (33) has cylindrical guide posts (331) that protrude on both sides. The guide posts (331) pass through the waist-shaped groove (322). When the sliding extrusion member (33) moves horizontally, the locking block (32) is driven to float up and down through the extrusion cooperation between the guide posts (331) and the waist-shaped groove (322).

2. The seat / stool adjustment device according to claim 1, characterized in that: The mounting base (11) has protrusions (112) on both sides along the length direction, and several rollers (12) are respectively installed on the two side walls of the mounting base (11).

3. The seat / stool adjustment device according to claim 1, characterized in that: A connecting support (113) is provided on the top of the mounting base (11), and the connecting support (113) is connected to the stool. The mounting base (11) is provided with mounting holes (114) for support feet at the bottom of the connecting support base (113).

4. The seat / stool adjustment device according to claim 2, characterized in that: The inner side of the cantilever (21) is provided with a groove (211) along the length direction. The protrusion (112) is slidably disposed in the groove (211). A guide groove (212) is provided parallel above the groove (211). The guide groove (212) is correspondingly and cooperates with the roller (12).

5. The seat / stool adjustment device according to claim 1, characterized in that: The backrest assembly (2) also includes an L-shaped backrest connecting unit (22), which includes a lifting arm (221) and a connecting arm (222). The bottom of the connecting arm (222) is connected to the cantilever (21), and the lifting arm (221) is moved up and down at the top of the connecting arm (222). The connecting arm (222) is connected to the chair back.

6. The seat / stool adjustment device according to claim 5, characterized in that: A fixing post (223) is provided directly below the connection position of the cantilever (21) and the connecting arm (222). One end of the locking strip (31) is sleeved on the fixing post (223). A recessed groove (115) extends directly below the cavity (111), and the locking strip (31) is laid in the recessed groove (115).

7. A seat / stool adjustment device according to claim 1, characterized in that: The limiting component (3) also includes a bottom block (34) and a top block (35). The bottom block (34) and the top block (35) are fixedly connected. The bottom block (34) and the top block (35) enclose the locking block (32) and the sliding extrusion member (33). The bottom block (34) and the top block (35) are provided with a sliding groove (332) for the sliding extrusion member (33) to slide. The bottom block (34) and the top block (35) are also provided with a lifting groove (323) for the locking block (32) to rise and fall. The bottom of the bottom block (34) is also provided with an opening groove (334) for the locking block (32) to pass through and cooperate with the locking strip (31).

8. The seat / stool adjustment device according to claim 1, characterized in that: The limiting component (3) is also provided with an elastic return member (36), which is installed between the locking bar (31) and the mounting base (11). The elastic return member (36) drives the cantilever (21) to reset.

9. A seat / stool adjustment device according to claim 1, characterized in that: The sliding extrusion member (33) is provided with a pull cable groove (37), and a pull cable is installed in the pull cable groove (37). The pull cable is connected to the control switch on the seat.

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