Height-adjustable dining chair structure

Abstract

The utility model relates to the technical field of dining chairs for children, in particular to a height-adjustable dining chair structure which is characterized in that supporting legs are fixed on front supporting legs; a pedal plate and a seat body are arranged between the two front supporting legs; sliding seat main bodies are fixed on the seat body and the pedal plate; connecting blocks are fixed to the two ends of the supporting pipe. The two ends of the supporting pipe are each slidably connected with a sliding piece. Sliding pins are fixed on the sliding pieces; a plurality of positioning holes matched with the sliding pins are formed in the side surface of the front supporting leg; the positioning holes are sequentially arranged in the height direction of the front supporting legs. A sliding pin driving assembly used for driving the sliding piece to slide is arranged on the supporting pipe. When the child seat is used, in the structure, the heights of the seat body and the pedal can be adjusted according to the height of a child and the height of a table top, and the child seat is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of children's dining chairs, and particularly relates to a dining chair structure with adjustable height. Background Art

[0002] A children's dining chair is an item that facilitates children to have meals with adults at the same table. It mainly consists of a seat body and support legs connected to the table and chair body. A cross belt is arranged on the seat body for protecting children and preventing them from falling. However, in the current structure of children's dining chairs, the height cannot be adjusted, and it cannot be adjusted according to the height of children or the height of the dining table, so that children cannot have the best dining vision, and it is extremely inconvenient to use. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a dining chair structure with adjustable height in view of the defects and deficiencies of the prior art.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A dining chair structure with adjustable height according to the utility model includes two parallel front support legs; a support leg is fixed on the front support legs; a footrest and a seat body are arranged between the two front support legs; sliding seat bodies are fixed on both the seat body and the footrest; both sides of the sliding seat body are slidably connected to the front support legs on both sides;

[0006] The sliding seat body includes a support tube; connection blocks are fixed at both ends of the support tube; a sliding member is slidably connected to both ends of the support tube; a sliding pin is fixed on each sliding member; a plurality of positioning holes matching the sliding pins are arranged on the side surface of the front support leg; the positioning holes are arranged in sequence along the height direction of the front support leg; a sliding pin driving component for driving the sliding member to slide is arranged on the support tube.

[0007] Further, the sliding pin driving component includes a spring seat fixed on the support tube and a key positioning sleeve fixed on the support tube; a key is slidably connected in the key positioning sleeve; the spring seat is arranged between the two sliding members; springs are connected between the sliding members and the spring seat; both sliding members are connected to the key.

[0008] Further, the key is a shell structure with an open end face; second inclined surfaces are arranged on both the left and right side surfaces of the shell structure; a first inclined surface matching the second inclined surface is arranged on the sliding member.

[0009] Further, the inner hole of the key positioning sleeve matches the key; a key flange is arranged on the outer side wall of the key; the key and the key positioning sleeve form a sliding structure.

[0010] Further, a slider is connected to the connecting block; an insertion tube is arranged on the slider; a through-insertion tube hole matching the insertion tube is arranged on the connecting block; the insertion tube passes through the through-insertion tube hole and is fixed on the support tube; a guide rail groove matching the slider is arranged on the front support leg; and the slider is inserted into the guide rail groove.

[0011] Further, the seat body is composed of a protection main body and a seat plate; the protection main body includes a backrest, a cross belt fixed on the backrest, and a dining plate fixed on the cross belt; a sliding column is slidably connected inside the front support leg; connection sleeves are arranged on both sides of the backrest; the inner hole of the connection sleeve matches the sliding column; the sliding column is inserted into the connection sleeve; the connection sleeve is fixed on the sliding column; and the cross belt is fixed on the seat plate through a fixing plate.

[0012] Further, the cross belt is in a "U" shape; cross belt buckles are arranged at both ends of the cross belt; backrest buckle holes matching the cross belt buckles are arranged on the backrest; and the cross belt buckles are buckled and fixed on the backrest buckle holes.

[0013] After adopting the above structure, the beneficial effects of the present utility model are as follows: When the sliding pins are inserted into the positioning holes of the front support legs on both sides, the seat body and the footrest are fixed on the front support legs; when it is necessary to adjust the seat body according to the height of the tabletop, the sliding pin driving assembly on the first sliding seat main body drives the sliding pins to move, so that the sliding pins on both sides are pulled out from the positioning holes, and the seat body can slide on the front support legs. After reaching the set position, the sliding pins are reinserted into the positioning holes at the corresponding positions for positioning. When adjusting the height between the footrest and the seat body according to the leg length of the child, the sliding pin driving assembly drives the sliding pins on the second sliding seat main body to move, and the sliding pins on both sides are pulled out from the positioning holes, so that the footrest slides along the front support legs. After reaching the set position, the sliding pins are reinserted into the corresponding positioning holes for positioning; in this structure, the height of the seat body and the footrest can be adjusted according to the height of the child and the height of the tabletop, which is more convenient to use. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is the exploded view of the present utility model;

[0016] Figure 3 is the structural diagram of the front support leg;

[0017] Figure 4 is the structural diagram of the sliding seat main body;

[0018] Figure 5It is a sectional view of the connection between the sliding part and the button;

[0019] Explanation of the reference numerals in the drawings:

[0020] 1. Protection main body; 101. Backrest; 101a. Backrest buckle hole; 101b. Connecting sleeve;

[0021] 102. Cross belt; 102a. Cross belt buckle; 103. Dining plate; 2. Fixed plate; 3. Sliding seat main body;

[0022] 301. Support tube; 302. Spring seat; 303. Connecting block; 303a. Through insertion tube hole;

[0023] 304. Slide block; 304a. Insertion tube; 304b. Through pin hole; 305. Slide pin; 306. Sliding part;

[0024] 306a. First inclined surface; 307. Spring; 308. Button positioning sleeve; 309. Button;

[0025] 309a. Second inclined surface; 309b. Button flange; 4. Front support leg; 401. Positioning hole;

[0026] 402. Guide rail groove; 403. Slide column; 5. Rear support leg; 6. Seat plate; 7. Footrest. Specific implementation manner

[0027] The present utility model will be further described below with reference to the accompanying drawings.

[0028] As Figures 1 to 5 shown, a height-adjustable dining chair structure described in the present utility model includes two parallel front support legs 4; a support leg 5 is fixed on the front support legs 4; a footrest 7 and a seat body are arranged between the two front support legs 4; sliding seat main bodies 3 are fixed on both the seat body and the footrest 7; both sides of the sliding seat main body 3 are slidably connected to the front support legs 4 on both sides;

[0029] The sliding seat body 3 includes a support tube 301; connection blocks 303 are fixed at both ends of the support tube 301; the sliding seat body 3 fixed to the seat body is the first sliding seat body; the connection blocks 303 on the first sliding seat body are fixed to the seat body; the sliding seat body 3 fixed to the footrest 7 is the second sliding seat body; the connection blocks 303 of the second sliding seat body are fixed to the footrest 7; a sliding member 306 is slidably connected to both ends of the support tube 301; a sliding pin 305 is fixed to each sliding member 306; a plurality of positioning holes 401 matching the sliding pins 305 are provided on the side surface of the front support leg 4; the positioning holes 401 are arranged in sequence along the height direction of the front support leg 4; a sliding pin driving assembly for driving the sliding member 306 to slide is provided on the support tube 301;

[0030] When the sliding pins 305 are inserted into the positioning holes 401 of the front support legs 4 on both sides, the seat body and the footrest 7 are fixed on the front support legs 4; when it is necessary to adjust the seat body according to the height of the tabletop, the sliding pin driving assembly on the first sliding seat body drives the sliding pins 305 to move, so that the sliding pins 305 on both sides are pulled out from the positioning holes 401, and the seat body can slide on the front support legs 4. After reaching the set position, the sliding pins 305 are inserted into the positioning holes 401 at the corresponding positions again for positioning. When adjusting the height between the footrest 7 and the seat body according to the leg length of the child, the sliding pin driving assembly drives the sliding pins 305 on the second sliding seat body to move, and the sliding pins 305 on both sides are pulled out from the positioning holes 401, so that the footrest 7 slides along the front support legs 4. After reaching the set position, the sliding pins 305 are inserted into the corresponding positioning holes 401 again for positioning; in this structure, the heights of the seat body and the footrest 7 can be adjusted according to the height of the child and the height of the tabletop, which is more convenient to use.

[0031] As a preferred mode of the present invention, the sliding pin driving assembly includes a spring seat 302 fixed on the support tube 301 and a key positioning sleeve 308 fixed on the support tube 301; a key 309 is slidably connected in the key positioning sleeve 308; the spring seat 302 is arranged between the two sliding members 306; springs 307 are connected between the sliding members 306 and the spring seat 302; both sliding members 306 are connected to the key 309;

[0032] The key positioning sleeve 308 is of an annular structure and is equivalent to a sliding sleeve;

[0033] The spring 307 is used to provide an outward thrust for the sliding member 306, so that when the key 309 is not operated, the sliding pin 305 extends outward and is inserted into the positioning hole 401;

[0034] When the operation button 309 is operated, the button 309 can drive two sliding members 306 to move towards the spring seat 302 simultaneously, so that the sliding pin 305 is pulled out of the positioning hole 401.

[0035] As a preferred embodiment of the present utility model, the button 309 has a housing structure with an open end face; second inclined surfaces 309a are provided on both the left and right side surfaces of the housing structure; first inclined surfaces 306a matching the second inclined surfaces 309a are provided on the sliding members 306; after the button 309 is pressed, the second inclined surfaces 309a push the first inclined surfaces 306a, causing the sliding members 306 to slide within the support tube 301; a wedge-shaped surface structure is formed by combining the second inclined surfaces 309a and the first inclined surfaces 306a.

[0036] As a preferred embodiment of the present utility model, the inner hole of the button positioning sleeve 308 matches the button 309; a button flange 309b is provided on the outer side wall of the button 309; a sliding structure is formed between the button 309 and the button positioning sleeve 308; the button flange 309b is used for positioning the button 309 on the button positioning sleeve 308 to prevent the button 309 from loosening out of the button positioning sleeve 308.

[0037] As a preferred embodiment of the present utility model, a slider 304 is connected to the connecting block 303; an insertion tube 304a is provided on the slider 304; a through-insertion tube hole 303a matching the insertion tube 304a is provided on the connecting block 303; the insertion tube 304a passes through the through-insertion tube hole 303a and is fixed on the support tube 301; a guide rail groove 402 matching the slider 304 is provided on the front support leg 4; the slider 304 is inserted into the guide rail groove 402;

[0038] A through-pin hole 304b for the sliding pin 305 to pass through is provided on the slider 304; after the two side sliders 304 are inserted into the guide rail groove 402, the support tube 301 is slidably connected to the front support leg 4.

[0039] As a preferred embodiment of the present utility model, the seat body is composed of a protection main body 1 and a seat plate 6; the protection main body 1 includes a backrest 101, a cross belt 102 fixed on the backrest 101, and a dining plate 103 fixed on the cross belt 102; a sliding column 403 is slidably connected inside the front support leg 4; connection sleeves 101b are provided on both sides of the backrest 101; the inner holes of the connection sleeves 101b match the sliding column 403; the sliding column 403 is inserted into the connection sleeves 101b; the connection sleeves 101b are fixed on the sliding column 403; the cross belt 102 is fixed on the seat plate 6 through a fixing plate 2;

[0040] The cross belt 102 has no essential difference from the prior art, so it will not be elaborated here; the seat plate 6 and the cross belt 102 are connected into one body through the fixing plate 2. After the connecting sleeve 101b is fixed on the sliding column 403, the sliding column 403 and the backrest 101 are connected into one body; when adjusting the height of the seat plate 6, the overall structure composed of the protection main body 1 and the seat plate 6 will also rise and fall synchronously; to ensure the safety of use, round holes are also provided on the sliding column 403, and the sliding pin 305 passes through the positioning hole 401 and extends into the round hole, so that the sliding column 403 cannot slide relative to the front support leg 4; when the sliding pin 305 retracts, the sliding pin 305 first pulls out from the round hole and then from the positioning hole 401, so that the sliding column 403 can slide on the front support leg 4.

[0041] As a preferred embodiment of the present invention, the cross belt 102 is in a "U" shape; both ends of the cross belt 102 are provided with cross belt buckles 102a; the backrest 101 is provided with backrest buckle holes 101a matching the cross belt buckles 102a; the cross belt buckles 102a are buckled and fixed on the backrest buckle holes 101a;

[0042] The cross belt 102 and the backrest 101 are buckled and fixed through the cross belt buckles 102a and the backrest buckle holes 101a.

[0043] The above is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A dining chair structure with adjustable height, comprising two mutually parallel front supporting legs (4); a supporting leg (5) is fixed on the front supporting legs (4); a footrest (7) and a seat body are arranged between the two front supporting legs (4); the characteristics are: A sliding seat body (3) is fixed to both the seat body and the footrest (7); two sides of the sliding seat body (3) are respectively slidably connected to the front support legs (4) on both sides; The sliding seat body (3) comprises a support tube (301); connecting blocks (303) are fixed at both ends of the support tube (301); a sliding member (306) is slidably connected to both ends of the support tube (301); a sliding pin (305) is fixed to each sliding member (306); a plurality of positioning holes (401) matching the sliding pins (305) are provided on the side surface of the front supporting leg (4); the positioning holes (401) are arranged in sequence along the height direction of the front supporting leg (4); and a sliding pin driving assembly for driving the sliding member (306) to slide is provided on the support tube (301).

2. The height-adjustable dining chair structure according to claim 1, characterized in that: The sliding pin driving assembly comprises a spring seat (302) fixed on a support tube (301) and a key positioning sleeve (308) fixed on the support tube (301); a key (309) is slidably connected inside the key positioning sleeve (308); the spring seat (302) is arranged between two sliding members (306); a spring (307) is connected between the sliding member (306) and the spring seat (302); and the two sliding members (306) are connected to the key (309).

3. The height-adjustable dining chair structure according to claim 2, characterized in that: The button (309) is a shell structure with an open end surface; the left and right side surfaces of the shell structure are both provided with a second inclined surface (309a); and the sliding member (306) is provided with a first inclined surface (306a) matching the second inclined surface (309a).

4. The height-adjustable dining chair structure according to claim 3, characterized in that: The inner hole of the button positioning sleeve (308) matches the button (309); a button flange (309b) is provided on the outer side wall of the button (309); and the button (309) and the button positioning sleeve (308) form a sliding structure.

5. The height-adjustable dining chair structure according to claim 1, characterized in that: The connection block (303) is connected to a slider (304); the slider (304) is provided with an insertion tube (304a); the connection block (303) is provided with an insertion tube hole (303a) matching the insertion tube (304a); the insertion tube (304a) is fixed to the support tube (301) after passing through the insertion tube hole (303a); the front support leg (4) is provided with a guide rail groove (402) matching the slider (304); and the slider (304) is inserted into the guide rail groove (402).

6. The height-adjustable dining chair structure according to claim 1, characterized in that: The seat body is composed of a protective body (1) and a seat plate (6); the protective body (1) comprises a backrest (101), a cross strap (102) fixed on the backrest (101), and a dining plate (103) fixed on the cross strap (102); a sliding column (403) is slidably connected inside the front support leg (4); connecting sleeves (101b) are provided on both sides of the backrest (101); the inner hole of the connecting sleeve (101b) matches the sliding column (403); the sliding column (403) is inserted into the connecting sleeve (101b); the connecting sleeve (101b) is fixed on the sliding column (403); the cross strap (102) is fixed to the seat plate (6) through a fixing plate (2).

7. The height-adjustable dining chair structure according to claim 6, characterized in that: The cross strap (102) is in a "U" shape; both ends of the cross strap (102) are provided with cross strap buckles (102a); the backrest (101) is provided with a backrest buckle hole (101a) matching the cross strap buckle (102a); and the cross strap buckle (102a) is buckled and fixed to the backrest buckle hole (101a).

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