A height-adjustable dining chair

Abstract

The present invention relates to the technical field of daily necessities, and in particular to a height-adjustable dining chair, comprising a seat assembly, a folding support leg and two telescopic support assemblies arranged in parallel, the telescopic support assembly comprising a support rod, an adjustment tube, a locking mechanism for locking the support rod and the adjustment tube and an unlocking key for driving the locking mechanism to unlock, the adjustment tube is sleeved outside the support rod and is telescopically slidably connected to the support rod, the locking mechanism is arranged on the adjustment tube, the top end of the folding support leg is rotatably connected to the adjustment tubes of the two telescopic support assemblies via a first folding joint; a cap is connected to the top end of the adjustment tube, and the unlocking key is slidably connected to the cap. The folding support leg of the present invention is foldable, which is convenient for storage and carrying. Since the height of the seat assembly is adjustable, it can be used as a high dining chair or a low chair, which can meet the needs of users of different heights. It is flexible and convenient to use, and the telescopic adjustment of the telescopic support assembly is simple and quick.

Description

Technical Field

[0001] The invention relates to the technical field of daily necessities, in particular to a height-adjustable dining chair. Background Art

[0002] Children's dining chairs are mainly used for children's dining, and are generally suitable for children over 3 months old. There are many structures and types of children's dining chairs. The height and volume of traditional children's dining chairs are fixed, which cannot meet the needs of users and are inconvenient to carry and store. At present, there are also children's dining chairs with adjustable height on the market, but the structure is complex, the height adjustment steps are cumbersome, time-consuming and labor-intensive, and they cannot be folded. Therefore, the defects are very obvious, and a solution is urgently needed. Summary of the invention

[0003] In order to solve the above technical problems, an object of the present invention is to provide a height-adjustable dining chair.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A height-adjustable dining chair comprises a seat assembly, a folding support leg and two telescopic support assemblies arranged in parallel, the telescopic support assembly comprising a support rod, an adjustment tube, a locking mechanism for locking the support rod and the adjustment tube and an unlocking key for driving the locking mechanism to unlock, the adjustment tube is sleeved outside the support rod and is telescopically slidably connected to the support rod, the locking mechanism is arranged on the adjustment tube, the top end of the folding support leg is rotatably connected to the adjustment tubes of the two telescopic support assemblies via a first folding joint; the top end of the adjustment tube is connected to a cap, and the unlocking key is slidably connected to the cap.

[0006] Furthermore, the locking mechanism includes a mounting seat installed on one side of the adjusting tube, a locking block elastically connected to the mounting seat, a resistance rod arranged on the locking block, a driving block lifted and lowered on the mounting seat, an inclined groove arranged on the driving block, a first elastic member clamped between the driving block and the mounting seat, and a connecting rod connected to the unlocking key and the driving block, the locking block is used to lock the support rod and the adjusting tube, the resistance rod protrudes into the inclined groove, and the inner wall of the inclined groove is used to interfere with the resistance rod.

[0007] Furthermore, a plurality of locking holes are provided in the length direction of the support rod, the adjusting tube is provided with a through hole connected to one of the locking holes, and the locking block protrudes into the corresponding locking hole through the through hole.

[0008] Furthermore, the locking block is elastically connected to the mounting seat via a second elastic member.

[0009] Furthermore, the seat assembly includes a seat component and two second folding joints respectively arranged on adjustment tubes of two telescopic support components, and two sides of the seat component are respectively connected to the two second folding joints.

[0010] Furthermore, the seat assembly also includes a backrest, which is located above the seat component, and two sides of the backrest are respectively connected to adjustment pipes of two telescopic support assemblies.

[0011] Furthermore, the seat assembly also includes a footrest and two third folding joints respectively arranged on the adjustment tubes of the two telescopic support assemblies, and both sides of the footrest are respectively connected to the two third folding joints.

[0012] Furthermore, the third folding joint is provided with a disassembly groove, and the foot pedal is provided with a disassembly block, and the disassembly block is detachably connected to the disassembly groove.

[0013] Furthermore, the seat assembly further comprises a dining tray, and the dining tray is detachably connected to the backrest and / or the adjustment tube.

[0014] Furthermore, the seat assembly further comprises a limiting guard ring, and the limiting guard ring is detachably connected to the backrest and / or the adjustment tube.

[0015] The beneficial effects of the present invention are as follows: in actual application, the folding support legs are unfolded relative to the two telescopic support assemblies via the first folding joint, and the folding support legs and the two telescopic support assemblies cooperate to support the adjustment tubes and the seat assembly of the two telescopic support assemblies, and the seat assembly is used for users to sit on; when it is necessary to adjust the height of the seat assembly, the operator applies force to the unlocking key, and the unlocking key drives the locking mechanism to unlock, so that the locking mechanism releases the locking of the support rod and the adjustment tube, and the adjustment tube can slide telescopically relative to the support rod to adjust the effective length of the adjustment tube and the support rod, and the seat assembly moves with the adjustment tube, thereby adjusting the height of the seat assembly; after the height adjustment of the seat assembly is completed, the force on the unlocking key is released, so that the locking mechanism re-locks the adjustment tube and the support rod together, thereby ensuring the structural stability of the telescopic support assembly. The present invention has a reasonable structural design, the folding support legs are foldable, and are easy to store and carry. Since the height of the seat assembly is adjustable, it can be used as a high dining chair or a low foot chair, which can meet the needs of users of different heights. It is flexible and convenient to use, and the telescopic adjustment of the telescopic support assembly is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the telescopic support assembly of the present invention.

[0018] Figure 3 It is a cross-sectional view of the telescopic support assembly of the present invention.

[0019] Figure 4 This is an exploded structural view of the telescopic support assembly of the present invention.

[0020] Figure 5 This is an exploded structural view of the telescopic support assembly of the present invention from another perspective.

[0021] Figure 6 This is a structural view of the lock block, the abutting rod, the driving block, the first elastic member and the second elastic member of the present invention.

[0022] Explanation of reference numerals:

[0023] 1. Telescopic support assembly; 11. Support rod; 111. Lock hole; 112. Guide groove; 12. Adjusting tube; 121. Through hole; 13. Locking mechanism; 131. Mounting seat; 132. Lock block; 133. Abutting rod; 134. Driving block; 135. Inclined groove; 136. First elastic member; 137. Link rod; 138. Guide rail; 139. Open slot; 14. Unlock key; 15. Second elastic member; 16. Top cover; 17. Foot; 18. Bottom cover; 19. Limit post; 191. Limit groove; 2. Seat assembly; 21. Seat member; 22. Second folding joint; 23. Backrest; 24. Footrest; 25. Third folding joint; 26. Disassembly and assembly slot; 27. Dining plate; 28. Limit protection ring; 3. Folding support leg; 4. First folding joint; 5. Cap; 6.拨动槽; 7. Reinforcing rod. Detailed implementation manners

[0024] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the implementation manners does not limit the present invention.

[0025] As Figures 1 to 6 shown, a height-adjustable dining chair provided by the present invention includes a seat assembly 2, a folding support leg 3 and two telescopic support assemblies 1 arranged in parallel. The telescopic support assembly 1 includes a support rod 11, an adjusting tube 12, a locking mechanism 13 for locking the support rod 11 and the adjusting tube 12, and an unlock key 14 for driving the unlocking of the locking mechanism 13. The adjusting tube 12 is sleeved outside the support rod 11 and is slidably connected to the support rod 11 in a telescopic manner. The locking mechanism 13 is arranged on the adjusting tube 12. The top end of the folding support leg 3 is rotatably connected to the adjusting tubes 12 of the two telescopic support assemblies 1 via a first folding joint 4. Specifically, the folding support leg 3 is in a U shape. The top end of the adjusting tube 12 is detachably connected with a cap 5. The cap 5 is provided with a拨动槽6. The unlock key 14 is slidably connected to the cap 5, and the unlock key 14 protrudes into the拨动槽6. In practical applications, the unlock key 14 moves in the拨动槽6, and the拨动槽6 plays a role in limiting the unlock key 14.

[0026] In actual application, the folding support foot 3 is unfolded relative to the two telescopic support assemblies 1 via the first folding joint 4, and the folding support foot 3 and the two telescopic support assemblies 1 cooperate to support the adjustment tubes 12 and the seat assembly 2 of the two telescopic support assemblies 1, and the seat assembly 2 is used for users to sit on; when it is necessary to adjust the height of the seat assembly 2, the operator applies force to the two unlocking keys 14 at the same time, and the unlocking key 14 drives the locking mechanism 13 to unlock, so that the locking mechanism 13 releases the lock on the support rod 11 and the adjustment tube 12, and the adjustment tube 12 can slide telescopically relative to the support rod 11 to adjust the effective length of the adjustment tube 12 and the support rod 11, and the seat assembly 2 moves with the adjustment tube 12, thereby adjusting the height of the seat assembly 2; after the height adjustment of the seat assembly 2 is completed, the force on the unlocking key 14 is released, so that the locking mechanism 13 re-locks the adjustment tube 12 and the support rod 11 together, thereby ensuring the structural stability of the telescopic support assembly 1, and at the same time, the locking mechanism 13 reversely drives the unlocking key 14 to reset. The structural design of the present invention is reasonable, the foldable support legs 3 are foldable, small in size, and easy to store and carry. Since the height of the seat assembly 2 is adjustable, it can be used as a high dining chair or a low chair, which can meet the needs of users of different heights. It is flexible and convenient to use, and the telescopic adjustment of the telescopic support assembly 1 is simple and quick.

[0027] In this embodiment, the locking mechanism 13 includes a mounting seat 131 installed on one side of the adjusting tube 12, a locking block 132 elastically connected to the mounting seat 131, a resisting rod 133 arranged on the locking block 132, a driving block 134 lifted and lowered on the mounting seat 131, an inclined groove 135 arranged on the driving block 134, a first elastic member 136 clamped between the driving block 134 and the mounting seat 131, and a connecting rod 137 connected to the unlocking key 14 and the driving block 134, the locking block 132 is used to lock the support rod 11 and the adjusting tube 12, the resisting rod 133 protrudes into the inclined groove 135, and the inner wall of the inclined groove 135 is used to resist the resisting rod 133; specifically, a plurality of locking holes 111 are arranged in the length direction of the support rod 11, the adjusting tube 12 is arranged with a through hole 121 connected to one of the locking holes 111, and the locking block 132 protrudes into the corresponding locking hole 111 via the through hole 121.

[0028] In actual application, the locking mechanism 13 locks the adjusting tube 12 on the supporting rod 11. At this time, the locking block 132 protrudes into the corresponding locking hole 111 through the through hole 121 to fix the adjusting tube 12, thereby determining the effective telescopic length of the adjusting tube 12 and the supporting rod 11, and then determining the height of the dining chair; when it is necessary to adjust the height of the dining chair, that is, to adjust the effective length of the supporting rod 11 and the adjusting tube 12, the user toggles the unlocking key 14 upwards, and the unlocking key 14 pulls the driving block 134 upwards via the connecting rod 137. The driving block 134 moving upwards compresses the first elastic member 136, so that the first elastic member 136 stores elastic potential energy, and the inclined groove 135 moves with the movement of the driving block 134. The inner wall of the moving inclined groove 135 conflicts with the abutment rod 133. Since the locking block 132 is elastically connected to the mounting seat 131, the abutment rod 133 will be pressed under the action of the inclined groove 135. The force applied toward the mounting seat 131 causes the interference rod 133 and the locking block 132 to move toward the mounting seat 131 until the locking block 132 moves out of the locking hole 111. At this time, the adjusting tube 12 can slide telescopically relative to the supporting rod 11 to adjust the effective length of the adjusting tube 12 and the supporting rod 11. After adjusting to the required height of the dining chair, the user releases the force applied to the unlocking key 14. At this time, the first elastic member 136 returns to its original state and drives the driving block 134 to move downward under the resilience of the first elastic member 136. The driving block 134 that moves downward pulls the unlocking key 14 to return to its original state via the connecting rod 137. At the same time, the inclined groove 135 that moves downward releases the force applied to the interference rod 133. The locking block 132 is reset under the action of the elastic force and protrudes into the corresponding locking hole 111 to lock the supporting rod 11 and the adjusting tube 12, thereby completing the adjustment of the height of the dining chair. The locking mechanism 13 has a reasonable structural design, and the support rod 11 and the adjusting tube 12 are convenient to adjust in telescopic manner, with good adjustment stability, saving time and effort, and facilitating the height adjustment of the dining chair.

[0029] Specifically, the number of the abutment rods 133 and the number of the inclined slots 135 are both two, and the two abutment rods 133 are respectively located on both sides of the locking block 132, and the two abutment rods 133 are respectively arranged in one-to-one correspondence with the two inclined slots 135. This structural design makes the locking block 132 evenly stressed, which is conducive to improving the stability of the locking block 132 when in use.

[0030] In this embodiment, the locking block 132 is elastically connected to the mounting seat 131 via the second elastic member 15, one end of the second elastic member 15 abuts against the abutment rod 133, and the other end of the second elastic member 15 abuts against the mounting seat 131. This structural design is conducive to the automatic reset of the locking block 132, and improves the stability of the locking block 132 locking the support rod 11 and the adjustment tube 12. Specifically, the first elastic member 136 and the second elastic member 15 can both be springs.

[0031] Specifically, the mounting seat 131 is provided with a guide rail 138, and the locking block 132 is slidably connected to the guide rail 138; guiding the locking block 132 by the guide rail 138 not only facilitates the installation of the locking block 132 and ensures the position accuracy of the locking block 132, but also helps to improve the stability of the locking block 132 when moving.

[0032] Specifically, the guide rail 138 is provided with an opening slot 139, and the abutment rod 133 passes through the opening slot 139 and then protrudes into the inclined slot 135, and the abutment rod 133 is slidably connected with the opening slot 139. With this structural design, the opening slot 139 guides and positions the abutment rod 133, further improving the stability of the movement of the locking block 132.

[0033] Specifically, a guide groove 112 is provided in the length direction of the support rod 11, and the connecting rod 137 is slidably connected to the guide groove 112; one end of the connecting rod 137 protrudes into the guide groove 112, and the guide groove 112 guides and positions the connecting rod 137, thereby improving the stability of the connecting rod 137 when in use.

[0034] Specifically, a plurality of locking holes 111 are arranged in the guide groove 112, and the locking holes 111 are recessed from the bottom wall of the guide groove 112; this structural design makes the structure of the support rod 11 compact, which is beneficial to reducing the volume of the present invention, and the guide groove 112 can provide a space for the locking block 132 and the guide rail 138 to avoid, which is beneficial for the locking block 132 to move in or out of the locking hole 111.

[0035] In this embodiment, the top end cover of the support rod 11 is provided with a top cover 16 , and the top cover 16 is located in the adjustment tube 12 ; the top cover 16 seals the top end of the support rod 11 .

[0036] In this embodiment, a foot 17 is provided at the bottom end of the support rod 11; the foot 17 can not only seal the bottom end of the support rod 11, but also play a supporting role to prevent the support rod 11 from directly contacting the supporting surface (such as the ground, etc.), thereby reducing the wear of the support rod 11, and facilitating disassembly and maintenance, thereby reducing the maintenance cost.

[0037] Specifically, the feet 17 on the two support rods 11 are connected via the reinforcing rod 7, which increases the strength of the present invention and improves the structural stability of the present invention.

[0038] In this embodiment, a bottom cover 18 is provided at the bottom end of the adjusting tube 12, and the bottom cover 18 is slidably connected to the support rod 11, and the top cover 16 is used to abut against the bottom cover 18. The bottom cover 18 abuts against the top cover 16 to prevent the support rod 11 and the adjusting tube 12 from being easily separated, thereby improving the stability of the connection between the support rod 11 and the adjusting tube 12.

[0039] In this embodiment, the regulating tube 12 is provided with a limiting column 19, the connecting rod 137 is provided with a limiting groove 191, and the limiting column 19 protrudes into the limiting groove 191. The limiting column 19 cooperates with the limiting groove 191 to limit the moving stroke of the connecting rod 137, and the length of the limiting groove 191 is the moving stroke of the connecting rod 137, thereby limiting the moving stroke of the unlocking key 14 and the driving block 134, thereby improving the working stability of the present invention.

[0040] In this embodiment, the seat assembly 2 includes a seat member 21 and two second folding joints 22 respectively arranged on the adjustment tubes 12 of the two telescopic support assemblies 1. The two sides of the seat member 21 are respectively connected to the two second folding joints 22, and the seat member 21 is used for a user to sit on. In actual application, the seat member 21 can rotate relative to the adjustment tube 12 of the telescopic support assembly 1 via the second folding joints 22, so that the seat member 21 can be unfolded or folded relative to the adjustment tube 12, which is convenient for storage and carrying of the present invention.

[0041] Specifically, the seat component 21 is detachably connected to the second folding joint 22, which is convenient for disassembly, assembly and maintenance of the seat component 21. The seat component 21 can also be disassembled when stored, which is convenient for carrying, packaging and transportation.

[0042] In this embodiment, the seat assembly 2 also includes a backrest 23, which is located above the seat component 21. The two sides of the backrest 23 are respectively connected to the adjustment tubes 12 of the two telescopic support assemblies 1. The backrest 23 is used for the user to lean on his back, thereby improving the safety performance and comfort of the present invention.

[0043] In this embodiment, the seat assembly 2 further includes a footrest 24 and two third folding joints 25 respectively arranged on the adjustment tubes 12 of the two telescopic support assemblies 1. The two sides of the footrest 24 are respectively connected to the two third folding joints 25. The footrest 24 is used to support the user's feet. In actual application, the footrest 24 can rotate relative to the adjustment tube 12 of the telescopic support assembly 1 via the third folding joints 25, so that the footrest 24 can be unfolded or folded relative to the adjustment tube 12, which is convenient for the present invention to be stored and carried.

[0044] In this embodiment, the third folding joint 25 is provided with a disassembly slot 26, and the footrest 24 is provided with a disassembly block, which is detachably connected to the disassembly slot 26. The disassembly slot 26 and the disassembly block cooperate to facilitate the disassembly and maintenance of the footrest 24; in actual application, the footrest 24 can be disassembled or installed according to the needs of the user, and is flexible to use.

[0045] In this embodiment, the seat assembly 2 further includes a dining tray 27, which is detachably connected to the backrest 23 and / or the adjustment tube 12. The dining tray 27 can be used by the user for dining; in actual application, the dining tray 27 can be removed or installed for use according to actual needs.

[0046] In this embodiment, the seat assembly 2 further includes a limiting guard ring 28, which is detachably connected to the backrest 23 and / or the adjustment tube 12. The limiting guard ring 28 can limit the user on the seat component 21, protect the user, and prevent the user from easily sliding off the seat component 21, with good safety performance. In actual application, the limiting guard ring 28 is removed or installed for use according to actual needs.

[0047] Specifically, the support rod 11 is provided with a plurality of gear numbers, which are respectively arranged in one-to-one correspondence with the plurality of lock holes 111, and the adjustment tube 12 is provided with a revealing hole, which is used to display the corresponding gear number, and the plurality of gear numbers can be Arabic numerals in descending or ascending order. When the adjustment tube 12 slides relative to the support rod 11, the corresponding gear number is displayed through the revealing hole, so that the operator can clearly know the height position of the gear of the dining chair, and further facilitate the operator to adjust the height of the dining chair.

[0048] All technical features in this embodiment can be freely combined according to actual needs.

[0049] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A height-adjustable dining chair, characterized in that: The invention comprises a seat assembly, a folding support leg and two telescopic support assemblies arranged in parallel, wherein the telescopic support assembly comprises a support rod, an adjustment tube, a locking mechanism for locking the support rod and the adjustment tube, and an unlocking key for driving the locking mechanism to unlock, the adjustment tube is sleeved outside the support rod and is telescopically slidably connected to the support rod, the locking mechanism is arranged on the adjustment tube, the top end of the folding support leg is rotatably connected to the adjustment tubes of the two telescopic support assemblies via a first folding joint; the top end of the adjustment tube is connected to a cap, and the unlocking key is slidably connected to the cap; The locking mechanism comprises a mounting seat mounted on one side of the adjusting tube, a locking block elastically connected to the mounting seat, a resisting rod arranged on the locking block, a driving block lifted and arranged on the mounting seat, an inclined slot arranged on the driving block, a first elastic member sandwiched between the driving block and the mounting seat, and a connecting rod connected to the unlocking key and the driving block, the locking block is used to lock the support rod and the adjusting tube, the resisting rod protrudes into the inclined slot, and the inner wall of the inclined slot is used to resist the resisting rod; The locking block is elastically connected to the mounting seat via a second elastic member.

2. A height-adjustable dining chair according to claim 1, characterized in that: The support rod is provided with a plurality of locking holes in the length direction, the adjusting tube is provided with a through hole connected with one of the locking holes, and the locking block protrudes into the corresponding locking hole through the through hole.

3. The height-adjustable dining chair according to claim 1, characterized in that: The seat assembly comprises a seat component and two second folding joints respectively arranged on adjustment tubes of two telescopic support components, and two sides of the seat component are respectively connected to the two second folding joints.

4. A height-adjustable dining chair according to claim 3, characterized in that: The seat assembly also includes a backrest, which is located above the seat component, and two sides of the backrest are respectively connected to the adjustment pipes of the two telescopic support assemblies.

5. The height-adjustable dining chair according to claim 3, characterized in that: The seat assembly further comprises a footrest and two third folding joints respectively arranged on the adjustment tubes of the two telescopic support assemblies, and both sides of the footrest are respectively connected to the two third folding joints.

6. A height-adjustable dining chair according to claim 5, characterized in that: The third folding joint is provided with a disassembly groove, and the foot pedal is provided with a disassembly block, and the disassembly block is detachably connected to the disassembly groove.

7. The height-adjustable dining chair according to claim 4, characterized in that: The seat assembly further comprises a dining tray which is detachably connected to the backrest and / or the adjustment tube.

8. A height-adjustable dining chair according to claim 4 or 7, characterized in that: The seat assembly further comprises a limiting guard ring, which is detachably connected to the backrest and / or the adjustment tube.

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