Seat with length-adjustable seat plate

Abstract

The utility model relates to the technical field of seats, in particular to a seat with adjustable seat plate length, which comprises a seat plate and seat legs, the seat plate is divided into a fixed plate and a movable plate along the length direction, one end of the fixed plate contacted with the movable plate sinks to form a lap joint platform, one end of the movable plate is lapped on the lap joint platform, and the other end of the movable plate is lapped on the lap joint platform. The top planes of the fixed plate and the movable plate are consistent in height; the fixed plate is fixedly mounted above the chair legs, an adjusting sliding rail is arranged at the bottom of the fixed plate, and a sliding rod is fixedly connected to the bottom of the movable plate; a plurality of first inserting grooves are formed in the adjusting sliding rail in the length direction at intervals in a penetrating mode, and at least one second inserting groove is formed in the sliding rod. A plug is arranged at one end of the plug pin, and the plug pin is used for being inserted into the second slot and the first slot; the other end of the bolt is movably connected with the movable plate through a spring; the problems that in the prior art, the length of a seat cannot be adjusted and the like are solved through the structural design of the fixed plate and the movable plate which are adjustable in distance.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a seat with an adjustable seat length. Background Technology

[0002] Existing chairs generally have a fixed seat length, which can only meet the height characteristics of most people. However, for growing students or people whose height differs significantly from the average height, it is not convenient to adjust the seat depth according to the user's leg length. As a result, if the seat depth is insufficient or excessive, the legs will be unsupported, the support will be incomplete, or the back will not be supported by the backrest, making the legs very easy to get tired and greatly reducing the comfort of riding. The chairs are not very versatile.

[0003] Therefore, in order to address the above problems, this utility model urgently needs to provide a seat with an adjustable seat length. Utility Model Content

[0004] The purpose of this utility model is to provide a seat with an adjustable seat length. By using a structural design of a fixed plate and a movable plate with adjustable spacing, the problem of the inability to adjust the seat length in the prior art can be solved.

[0005] An adjustable seat includes a seat and legs. The seat is divided into a fixed plate and a movable plate along its length. The end of the fixed plate that contacts the movable plate is recessed to form an overlapping platform. One end of the movable plate overlaps the overlapping platform. The top planes of the fixed plate and the movable plate are at the same height.

[0006] The fixed plate is fixedly installed above the chair leg. The bottom of the fixed plate is provided with an adjustment slide rail that extends forward. The bottom of the movable plate is fixedly connected with a sliding rod that is slidably installed with the adjustment slide rail. The adjustment slide rail is provided with multiple first slots at intervals along its length. The sliding rod is provided with at least one second slot.

[0007] It also includes a pin that is slidably mounted on the bottom of the movable plate. One end of the pin has a plug for inserting into the second slot and the first slot to lock the adjusting slide rail and the sliding rod. The other end of the pin is movably connected to the movable plate via a spring for elastically pushing the pin to slide along the width of the seat.

[0008] Furthermore, the bottom of the movable plate is provided with a downward-opening mounting groove, and the side wall of the mounting groove is provided with a mounting slide rail along the width direction of the seat plate; the side of the pin is provided with a mounting protrusion that overlaps the mounting slide rail.

[0009] Furthermore, the mounting slide rail includes multiple slide rail segments spaced apart on the side wall of the mounting groove, with the distance between adjacent slide rail segments being greater than the length of the mounting protrusion.

[0010] Furthermore, a limiting hole is provided at the top of the pin, and one end of the spring is installed in the limiting hole; a mounting through hole is provided at the bottom of the pin, which is located below the spring, and the width of the mounting through hole is greater than the outer diameter of the spring.

[0011] Furthermore, the bottom of the latch is also equipped with a downward-extending handle.

[0012] Furthermore, the bottom of the movable plate is provided with multiple first weight-reducing grooves at intervals, and the bottom of the fixed plate is provided with multiple second weight-reducing grooves at intervals.

[0013] Furthermore, it also includes a bracket installed at the end of the fixed plate away from the movable plate and extending upward, with a backrest provided on the inner side of the bracket.

[0014] Furthermore, two adjusting slide rails are symmetrically arranged at the bottom of the fixed plate.

[0015] Furthermore, multiple support rods are fixed between the two adjusting slide rails.

[0016] Furthermore, the chair legs include support legs that are fixedly connected to the bottom of two adjusting slide rails and extend downwards; they also include two chair feet, each chair foot having an adjusting bracket extending upwards from its top, and the support legs and adjusting brackets being slidably connected together; a connecting rod is fixedly connected between the two adjusting brackets.

[0017] The adjustable seat length provided by this utility model has the following advantages compared with the prior art:

[0018] The adjustable seat provided by this utility model allows the sliding rod to be pulled along the adjustment rail to move the movable plate away from or closer to the fixed plate. At this time, the overlapping platform on one side of the fixed plate, together with the fixed plate and the movable plate, can realize the change of seat length. The spring can move the pin along the width direction of the seat so that the plug leaves or enters the first slot and the second slot, thereby unlocking the adjustment rail and the sliding rod, or automatically locking the first slot and the second slot when the adjustment rail and the sliding rod reach the appropriate position, thus realizing the adjustment and fixation of the seat length. Attached Figure Description

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

[0020] Figure 1 This is a schematic diagram (perspective view of the front angle) of the adjustable seat with adjustable seat length described in this utility model;

[0021] Figure 2This is a schematic diagram (a three-dimensional view of the rear angle) of the adjustable seat with adjustable seat length described in this utility model;

[0022] Figure 3 This is an exploded view of the seat board described in this utility model;

[0023] Figure 4 This is a schematic diagram (perspective view) of the movable plate described in this utility model;

[0024] Figure 5 This is a schematic diagram (perspective view) of the chair leg portion described in this utility model;

[0025] Figure 6 This is a schematic diagram (perspective view) of the sliding rod described in this utility model;

[0026] Figure 7 This is a schematic diagram (perspective view from bottom) of the pin described in this utility model;

[0027] Figure 8 This is a schematic diagram (a three-dimensional view from the top) of the pin described in this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Fixed plate; 101. Overlapping platform; 102. Second weight-reducing groove; 2. Moving plate; 201. Mounting groove; 202. Slide rail section; 203. First weight-reducing groove; 3. Adjustable slide rail; 301. First slot; 4. Sliding rod; 401. Second slot; 5. Pin; 501. Plug; 502. Mounting protrusion; 503. Limiting hole; 504. Mounting through hole; 505. Handle; 6. Spring; 7. Bracket; 8. Backrest; 9. Support rod; 10. Support leg; 11. Chair leg; 12. Adjustable bracket; 13. Connecting rod. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the present invention provides an adjustable seat with adjustable seat length, including a seat and chair legs. The seat is divided into a fixed plate 1 and a movable plate 2 along the length direction. The end of the fixed plate 1 that contacts the movable plate 2 is recessed to form an overlapping platform 101. One end of the movable plate 2 overlaps on the overlapping platform 101. The top plane heights of the fixed plate 1 and the movable plate 2 are the same.

[0034] The fixed plate 1 is fixedly installed above the chair leg. The bottom of the fixed plate 1 is provided with an adjustment slide rail 3 extending forward. The bottom of the movable plate 2 is fixedly connected with a sliding rod 4 that is slidably installed with the adjustment slide rail 3. The adjustment slide rail 3 is provided with a plurality of first slots 301 at intervals along the length direction. The sliding rod 4 is provided with at least one second slot 401.

[0035] It also includes a pin 5 that is slidably mounted on the bottom of the movable plate 2. One end of the pin 5 is provided with a plug 501, which is used to insert into the second slot 401 and the first slot 301 to lock the adjusting slide rail 3 and the sliding rod 4. The other end of the pin 5 is movably connected to the movable plate 2 through a spring 6, which is used to elastically push the pin 5 to slide along the width direction of the seat plate.

[0036] In this utility model, both the fixed plate 1 and the movable plate 2 are plastic products. Therefore, the distance between the overlapping platform 101 and the top plane of the fixed plate 1 can be 3-4mm. So, when there is a certain gap between the fixed plate 1 and the movable plate 2, the top planes of the fixed plate 1, the overlapping platform 101 and the movable plate 2 can form a seat, and the height difference of the seat plane is not large, so it will not affect the comfort of use.

[0037] The adjustable seat provided by this utility model allows the moving plate 2 to move away from or closer to the fixed plate 1 by pulling the sliding rod 4 along the adjustment slide rail 3. At this time, the overlapping platform 101 on one side of the fixed plate 1, together with the fixed plate 1 and the moving plate 2, can realize the change of seat length. The spring 6 can move the pin 5 along the width direction of the seat so that the plug 501 leaves or enters the first slot 301 and the second slot 401, thereby unlocking the adjustment slide rail 3 and the sliding rod 4 or automatically locking the first slot 301 and the second slot 401 when the adjustment slide rail 3 and the sliding rod 4 reach the appropriate position, thus realizing the adjustment and fixation of the seat length.

[0038] like Figure 1 , Figure 4 , Figure 7 , Figure 8 As shown, the bottom of the movable plate 2 has a downward-opening mounting groove 201, and the side wall of the mounting groove 201 is provided with a mounting slide rail along the width direction of the seat plate; the side of the pin 5 is provided with a mounting protrusion 502 that overlaps the mounting slide rail.

[0039] like Figure 4 , Figure 7 , Figure 8 As shown, the mounting slide rail includes multiple slide rail segments 202 spaced apart on the side wall of the mounting groove 201, and the distance between adjacent slide rail segments 202 is greater than the length of the mounting protrusion 502.

[0040] like Figure 7 , Figure 8 As shown, a limiting hole 503 is provided at the top of the pin 5, and one end of the spring 6 is installed in the limiting hole 503; a mounting through hole 504 is provided at the bottom of the pin 5, the mounting through hole 504 is located below the spring 6, and the width of the mounting through hole 504 is greater than the outer diameter of the spring 6.

[0041] like Figure 7 As shown, the bottom of the pin 5 is also provided with a downwardly extending handle 505.

[0042] like Figure 1 , Figure 2 , Figure 4 As shown, the bottom of the movable plate 2 is provided with a plurality of first weight-reducing grooves 203 at intervals, and the bottom of the fixed plate 1 is provided with a plurality of second weight-reducing grooves 102 at intervals.

[0043] like Figure 2 As shown, it also includes a bracket 7 installed on the end of the fixed plate 1 away from the movable plate 2 and extending upward, and the inner side of the bracket 7 is provided with a backrest 8.

[0044] like Figure 1 , Figure 2 , Figure 5 As shown, two adjusting slide rails 3 are symmetrically arranged at the bottom of the fixed plate 1.

[0045] like Figure 1 , Figure 2 , Figure 5 As shown, multiple support rods 9 are fixed between the two adjusting slide rails 3.

[0046] like Figure 1 , Figure 2 , Figure 5 As shown, the chair legs include support legs 10 that are fixedly connected to the bottom of the two adjusting slide rails 3 and extend downwards; they also include two chair feet 11, with an adjusting bracket 12 extending upwards from the top of each chair foot 11, and the support legs 10 and the adjusting brackets 12 can be slidably connected; a connecting rod 13 is fixedly connected between the two adjusting brackets 12.

[0047] The embodiments of this utility model include the following steps:

[0048] 1) Under normal conditions, the spring 6 pushes the pin 5, so that the plug 501 is inserted into the first slot 301 and the second slot 401, thereby fixing the adjusting slide rail 3 and the sliding rod 4, and then fixing the relative position of the fixed plate 1 and the moving plate 2. At this time, the seat can be used.

[0049] 2) When the seat length needs to be adjusted, push the handle 505 to compress the spring 6, pull the plug 501 out of the first slot 301 and the second slot 401, unlock the adjustment slide rail 3 and the sliding rod 4, pull the sliding rod 4 along the adjustment slide rail 3 to adjust the relative position of the fixed plate 1 and the moving plate 2. When the position is appropriate, the other first slot 301 and the second slot 401 correspond, the spring 6 pushes the plug 501 back into the first slot 301 and the second slot 401, fixes the adjustment slide rail 3 and the sliding rod 4, and then fixes the relative position of the fixed plate 1 and the moving plate 2, thus completing the adjustment of the seat length.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A seat with an adjustable seat length, characterized in that: The chair includes a seat and legs. The seat is divided into a fixed plate (1) and a movable plate (2) along the length direction. The end of the fixed plate (1) and the movable plate (2) that are in contact is sunk to form an overlapping platform (101). One end of the movable plate (2) is attached to the overlapping platform (101). The top plane heights of the fixed plate (1) and the movable plate (2) are the same. The fixed plate (1) is fixedly installed above the chair leg. The bottom of the fixed plate (1) is provided with an adjustment slide rail (3) extending forward. The bottom of the movable plate (2) is fixedly connected with a sliding rod (4) that is slidably installed with the adjustment slide rail (3). The adjustment slide rail (3) is provided with a plurality of first slots (301) spaced apart along the length direction. The sliding rod (4) is provided with at least one second slot (401). It also includes a pin (5) that is slidably mounted on the bottom of the movable plate (2). One end of the pin (5) is provided with a plug (501) for inserting into the second slot (401) and the first slot (301) to lock the adjusting slide rail (3) and the sliding rod (4). The other end of the pin (5) is movably connected to the movable plate (2) through a spring (6) for elastically pushing the pin (5) to slide along the width direction of the seat plate.

2. The adjustable seat length chair according to claim 1, characterized in that: The bottom of the movable plate (2) is provided with a downward-opening mounting groove (201), and the side wall of the mounting groove (201) is provided with a mounting slide rail along the width direction of the seat plate; the side of the pin (5) is provided with a mounting protrusion (502) that overlaps the mounting slide rail.

3. The adjustable seat length according to claim 2, characterized in that: The mounting slide rail includes multiple slide rail segments (202) spaced apart on the side wall of the mounting groove (201), and the distance between adjacent slide rail segments (202) is greater than the length of the mounting protrusion (502).

4. The adjustable seat length chair according to claim 3, characterized in that: A limiting hole (503) is provided at the top of the pin (5), and one end of the spring (6) is installed in the limiting hole (503); a mounting through hole (504) is provided at the bottom of the pin (5), the mounting through hole (504) is located below the spring (6), and the width of the mounting through hole (504) is greater than the outer diameter of the spring (6).

5. The adjustable seat length according to claim 4, characterized in that: The bottom of the latch (5) is also provided with a downwardly extending handle (505).

6. The adjustable seat length according to claim 5, characterized in that: The bottom of the movable plate (2) is provided with a plurality of first weight-reducing grooves (203) spaced apart, and the bottom of the fixed plate (1) is provided with a plurality of second weight-reducing grooves (102) spaced apart.

7. The adjustable seat length according to claim 6, characterized in that: It also includes a bracket (7) installed on the end of the fixed plate (1) away from the movable plate (2) and extending upward, with a backrest (8) provided on the inner side of the bracket (7).

8. The adjustable seat length according to claim 7, characterized in that: Two adjusting slide rails (3) are symmetrically arranged at the bottom of the fixed plate (1).

9. The adjustable seat length according to claim 8, characterized in that: Multiple support rods (9) are fixed between the two adjusting slide rails (3).

10. The seat with adjustable seat length according to claim 9, characterized in that: The chair legs include support legs (10) that are fixed to the bottom of the two adjustment slide rails (3) and extend downwards; they also include two chair feet (11), each chair foot (11) having an adjustment bracket (12) extending upwards from its top, and the support legs (10) and adjustment brackets (12) being slidably connected; a connecting rod (13) is fixed between the two adjustment brackets (12).

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