CN219165922U

CN219165922U - Desk and chair with hand lifter

Info

Publication number: CN219165922U
Application number: CN202222988428.4U
Authority: CN
Inventors: 刘国洪
Original assignee: Zhejiang Xinsheng Stage Equipment Co ltd
Current assignee: Zhejiang Xinsheng Stage Equipment Co ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-06-13
Anticipated expiration: 2032-11-08

Abstract

The utility model discloses a desk and chair with a hand-operated lifter, which is applied to the technical field of school tools, wherein a lifting component is arranged, the lifting component is driven to rotate through the rotation of a handle, so that the rotation of a horizontal plane is converted into the rotation in a vertical plane, the lifting of a lifting rod can be controlled, the handle is very likely to be not grasped in the process of controlling the desktop to descend by students through a speed limiting component, so that the too fast descent of the desktop to hurt the children by mistake is prevented, the lifting rod can be fixed at a certain position after the position of the lifting rod is adjusted through the arrangement of a limiting component, the center of gravity of a speed limiting block is arranged on one side of a round end, and the round end of the speed limiting block is positioned below in a natural state and is in contact with the tooth top of a second bevel gear, so that the rotation of the second bevel gear is not influenced.

Description

Desk and chair with hand lifter

Technical Field

The utility model belongs to the technical field of school supplies, and particularly relates to a desk and a chair with a hand-operated lifter.

Background

The traditional desk for students generally cannot be adjusted in height, even if the desk can be adjusted, the traditional lifter is fixed by screws, the screws are required to be rotated to adjust the desk, so that lifting is inconvenient, in the process that the student controls the desktop to descend, if the strength of a child is small, the child is very likely to grasp the handle, and therefore the desktop descends too quickly to accidentally injure the child.

The current announcements are: the Chinese patent of CN202514968 comprises an upper back plate, a left layer plate, a right layer plate, a reading plate, a drawer bucket, a side wing plate, a movable panel, a elbow supporting plate, a table frame supporting plate and a table frame base pipe, and further comprises a lifter and a lifting crank, wherein the lifter comprises a turbine jacket, a bearing jacket, a hollow bearing sleeve, a hollow shaft bearing, a transmission turbine, a transmission screw bearing, a transmission screw, a plug sleeve transmission nut, a square aluminum pipe and a base aluminum plug sleeve connecting nut, and the desk adopting the scheme can conveniently carry out height adjustment.

Most of the existing desks and chairs with hand-operated lifters are inconvenient to adjust in height and are not friendly to the young and children.

Disclosure of Invention

The utility model aims to provide a desk and chair with a hand-operated lifter, which has the advantages of convenient adjustment and complete protection measures.

The technical aim of the utility model is achieved through the following technical scheme that the desk and chair with the hand-operated lifter comprises a desktop and a chair, wherein a desk drawer is connected to the bottom of the desktop through bolts, a first water leakage groove is formed in the bottom of the desk drawer, lifting rods are connected to the two sides of the bottom of the desk drawer through bolts, supporting rods are movably connected to the bottoms of the lifting rods, lifting components, speed limiting components and limiting components are arranged between the lifting rods, and foot seats are welded at the bottoms of the supporting rods.

By adopting the technical scheme, through setting up lifting unit, can rotate through the handle and drive lifting unit and rotate to turn into the rotation in the vertical plane with the rotation of horizontal plane, with this lift that can control the lifter, through setting up speed limit subassembly, at the in-process that student's control desktop descends, if child's strength is less, very probably not grasp the handle, thereby prevent that the desktop from descending too fast and accidentally injuring child, through setting up spacing subassembly, can be after the position of adjusting the lifter, make the lifter fix in a position.

The utility model is further provided with: the lifting assembly comprises a fixed rod, a handle, a transmission shaft, a first bevel gear, a second bevel gear and a lifting screw, wherein the fixed rod is welded at the bottom of a table drawer, the handle penetrates through the lifting rod and is rotationally connected with the side face of the fixed rod, one end of the transmission shaft is fixedly connected with one end of the handle, the second bevel gear is rotationally connected with one end of the transmission shaft, the first bevel gear is matched with a tooth face of the second bevel gear, and one end of the lifting screw is rotationally connected with the large end face of the first bevel gear and penetrates through the inside of the lifting rod.

By adopting the technical scheme, the lifting assembly comprises the fixed rod, the handle, the transmission shaft, the first bevel gear, the second bevel gear and the lifting screw, and the transmission shaft can be driven to rotate through the rotation of the handle, so that the rotation of the horizontal plane is converted into the rotation in the vertical plane, and the lifting of the lifting rod can be controlled.

The utility model is further provided with: the speed limiting assembly comprises a rotating shaft, a speed limiting block, a tip and a round end, wherein the rotating shaft is connected with the inner wall of the fixed rod through bolts and is located above the second bevel gear, the speed limiting block is rotationally connected with the shaft surface of the rotating shaft, the tip is arranged at the left end of the speed limiting block, and the round end is arranged at the right end of the speed limiting block.

By adopting the technical scheme, the speed limiting assembly comprises the rotating shaft, the speed limiting block, the tip and the round end, and in the process of controlling the desktop to descend by students, if the strength of the child is small, the child is very likely to grasp the handle, so that the desktop descends too fast to accidentally injure the child.

The utility model is further provided with: the limiting assembly comprises a limiting block and a limiting groove, the limiting groove is formed in the large end face of the second bevel gear, and the limiting block is welded to the bottom of the inner side of the fixing rod and opposite to the limiting groove in position.

By adopting the technical scheme, the lifting rod comprises the limiting block and the limiting groove through the limiting component, and can drive the second bevel gear to be clamped on the limiting block by pulling the handle after the position of the lifting rod is adjusted, so that the lifting rod can be fixed at a certain position.

The utility model is further provided with: the gravity center of the speed limiting block is positioned at one side of the round end, and the lowest part of the round end is just contacted with the tooth top of the second bevel gear.

By adopting the technical scheme, the gravity center of the speed limiting block is arranged on one side of the round end, so that the round end of the speed limiting block is positioned below in a natural state to be in contact with the tooth top of the second bevel gear, and the rotation of the second bevel gear is not influenced.

The utility model is further provided with: the big terminal surface of the second bevel gear that keeps away from the handle rotates with the inside side of dead lever and is connected and rotate in step in the transmission shaft, the transmission shaft can drive another second bevel gear and transversely slide.

By adopting the technical scheme, the large end face of the second bevel gear far away from the handle is rotationally connected with the inner side face of the fixed rod and synchronously rotates with the transmission shaft, and the other second bevel gear transversely slides, so that the lifting rod can be separated from the speed limiting assembly after reaching the position, and meanwhile, the second bevel gear can be limited by the limiting block.

The utility model is further provided with: a connecting rod is welded between the support rods at the bottom of the chair, a storage basket is connected above the connecting rod through bolts, and a second water leakage groove is formed in the surface of the storage basket.

By adopting the technical scheme, the storage basket is arranged at the bottom of the chair, so that students can conveniently place redundant articles.

In summary, the utility model has the following beneficial effects:

through setting up lifting unit, can rotate through the handle rotation drive lifting unit and rotate to turn into the rotation in the vertical plane with the rotation of horizontal plane, with this lift that can control the lifter, through setting up speed limit subassembly, at the in-process that student's control desktop descends, if child's strength is less, very probably not grasp the handle, thereby prevent that the desktop from descending too fast and accidentally injuring child, through setting up spacing subassembly, can be after adjusting the position of lifter, make the lifter fix in a fixed position.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the lifting assembly, speed limiting assembly and spacing assembly of the present utility model;

FIG. 3 is a schematic view of a lifting assembly according to the present utility model;

FIG. 4 is a schematic view of the construction of a second bevel gear according to the present utility model;

fig. 5 is a schematic view of the structure of the speed limiting assembly of the present utility model.

In the figure, 1, a desktop; 2. a desk drawer; 3. a first water leakage groove; 4. a lifting rod; 5. a support rod; 6. a foot stand; 7. a lifting assembly; 8. a speed limiting assembly; 9. a limit component; 10. a chair; 11. a basket; 12. a second water leakage groove; 13. a connecting rod; 701. a fixed rod; 702. a handle; 703. a transmission shaft; 704. a first bevel gear; 705. a second bevel gear; 706. lifting screw rods; 801. a rotating shaft; 802. a speed limiting block; 803. a tip; 804. a round end; 901. a limit groove; 902. and a limiting block.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Examples:

referring to fig. 1-5, the present utility model provides the following technical solutions: the utility model provides a desk chair with hand riser, including desktop 1 and chair 10, the bottom bolted connection of desktop 1 has table steamer 2, first water leakage groove 3 has been seted up to the bottom of table steamer 2, the equal bolted connection in bottom both sides of table steamer 2 has lifter 4, the bottom swing joint of lifter 4 has bracing piece 5, be provided with lifting unit 7 between the lifter 4, speed limit subassembly 8 and spacing subassembly 9, the bottom welding of bracing piece 5 has foot rest 6, through setting up lifting unit 7, can rotate through handle 702 and drive lifting unit 7 and rotate, thereby convert the rotation of horizontal plane into the rotation in the vertical plane, thereby can control the lift of lifter 4, through setting up speed limit subassembly 8, in the in-process that student control desktop 1 descends, if child's strength is less, very probably not grasp handle 702, thereby prevent that desktop 1 from descending too fast and injuring the child, through setting up spacing subassembly 9, can be after adjusting the position of lifter 4, make lifter 4 fix in a fixed position.

Referring to fig. 3, the lifting assembly 7 includes a fixing rod 701, a handle 702, a driving shaft 703, a first bevel gear 704, a second bevel gear 705 and a lifting screw 706, the fixing rod 701 is welded at the bottom of the table drawer 2, the handle 702 penetrates through the lifting rod 4 and is rotatably connected with the side surface of the fixing rod 701, one end of the driving shaft 703 is fixedly connected with one end of the handle 702, the second bevel gear 705 is rotatably connected with one end of the driving shaft 703, the first bevel gear 704 is cooperatively connected with the tooth surface of the second bevel gear 705, one end of the lifting screw 706 is rotatably connected with the large end surface of the first bevel gear 704 and penetrates through the inside of the lifting rod 4, and the driving shaft 703 can be driven to rotate through rotation of the handle 702, so that rotation of a horizontal plane is converted into rotation in a vertical plane, and lifting of the lifting rod 4 can be controlled.

Referring to fig. 5, the speed limiting assembly 8 includes a rotating shaft 801, a speed limiting block 802, a tip 803 and a round end 804, the rotating shaft 801 is connected to an inner wall of the fixed rod 701 by a bolt and is located above the second bevel gear 705, the speed limiting block 802 is connected to an axial surface of the rotating shaft 801 by a rotation, the tip 803 is disposed at a left end of the speed limiting block 802, the round end 804 is disposed at a right end of the speed limiting block 802, and in a process of controlling the desktop 1 to descend by a student, if a child has small force, the handle 702 is most likely not to be grasped, thereby causing the desktop 1 to descend too quickly and accidentally injure the child.

Referring to fig. 3, the limiting component 9 includes a limiting block 902 and a limiting groove 901, the limiting groove 901 is formed on a large end face of the second bevel gear 705, the limiting block 902 is welded at the bottom of the inner side of the fixed rod 701 and is opposite to the position of the limiting groove 901, after the position of the lifting rod 4 is adjusted, the second bevel gear 705 can be driven to be clamped on the limiting block 902 by pulling the handle 702, so that the lifting rod 4 can be fixed at a certain position.

Referring to fig. 5, the center of gravity of the speed limiting block 802 is located at one side of the circular end 804, and the lowest position of the circular end 804 is just contacted with the tooth top of the second bevel gear 705, so that the speed limiting block 802 is located below the circular end 804 and contacted with the tooth top of the second bevel gear 705 in a natural state, and the rotation of the second bevel gear 705 is not affected.

Referring to fig. 2, the large end surface of the second bevel gear 705 far from the handle 702 is rotationally connected with the inner side surface of the fixed rod 701 and synchronously rotates with the transmission shaft 703, the transmission shaft 703 can drive another second bevel gear 705 to transversely slide, so that the lifting rod 4 can be separated from the speed limiting assembly 8 after reaching the position, and meanwhile, the lifting rod can be clamped into the limiting block 902 to limit the rotation of the second bevel gear 705.

Referring to fig. 1, a connecting rod 13 is welded between the support rods 5 at the bottom of the chair 10, a storage basket 11 is connected above the connecting rod 13 through bolts, and a second water leakage groove 12 is formed in the surface of the storage basket 11, so that students can conveniently place redundant articles.

The use process is briefly described: when the desk and chair with the hand lifter is used, students can rotate the handle 702, the handle 702 drives the transmission shaft 703 to rotate, the transmission shaft 703 can drive the second bevel gear 705 to rotate, the second bevel gear 705 drives the first bevel gear 704 to rotate, thereby the lifting rod 4 is driven to lift through the lifting screw 706, when the lifting rod 4 descends too fast, the tooth tops of the second bevel gear 705 can strike the round end 804, the kinetic energy of the round end 804 is increased to rise a certain height, the tip 803 is driven to descend, the tip 803 can be clamped into a gear gap of the second bevel gear 705 to clamp the second bevel gear 705 to rotate, if the desk and chair is to return, only the tip 803 is required to reversely rotate to be separated, the handle 702 is pulled outwards after the lifting rod 4 reaches a designated height, and the limiting groove 901 on the second bevel gear 705 at the near end is driven by the handle 702 to be clamped into the limiting block 902, and the height of the lifting rod 4 is fixed.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. The utility model provides a desk chair with hand riser, includes desktop (1) and chair (10), its characterized in that: the novel table is characterized in that a table drawer (2) is connected to the bottom of the table (1) through bolts, a first water leakage groove (3) is formed in the bottom of the table drawer (2), lifting rods (4) are connected to two sides of the bottom of the table drawer (2) through bolts, supporting rods (5) are movably connected to the bottoms of the lifting rods (4), lifting components (7), speed limiting components (8) and limiting components (9) are arranged between the lifting rods (4), and foot bases (6) are welded to the bottoms of the supporting rods (5);

the lifting assembly (7) comprises a fixed rod (701), a handle (702), a transmission shaft (703), a first bevel gear (704), a second bevel gear (705) and a lifting screw (706), wherein the fixed rod (701) is welded at the bottom of the table drawer (2), the handle (702) penetrates through the lifting rod (4) and is rotationally connected with the side face of the fixed rod (701), one end of the transmission shaft (703) is fixedly connected with one end of the handle (702), the second bevel gear (705) is rotationally connected with one end of the transmission shaft (703), the first bevel gear (704) is matched and connected with the tooth face of the second bevel gear (705), and one end of the lifting screw (706) is rotationally connected with the large end face of the first bevel gear (704) and penetrates through the inside of the lifting rod (4);

the speed limiting assembly (8) comprises a rotating shaft (801), a speed limiting block (802), a tip (803) and a round end (804), wherein the rotating shaft (801) is connected to the inner wall of the fixed rod (701) through bolts and is positioned above the second bevel gear (705), the speed limiting block (802) is rotationally connected to the shaft surface of the rotating shaft (801), the tip (803) is arranged at the left end of the speed limiting block (802), and the round end (804) is arranged at the right end of the speed limiting block (802);

the limiting assembly (9) comprises a limiting block (902) and a limiting groove (901), the limiting groove (901) is formed in the large end face of the second bevel gear (705), and the limiting block (902) is welded to the bottom of the inner side of the fixing rod (701) and is opposite to the limiting groove (901).

2. A desk and chair with a hand operated riser as claimed in claim 1 wherein: the gravity center of the speed limiting block (802) is positioned on one side of the round end (804), and the lowest part of the round end (804) is just contacted with the tooth top of the second bevel gear (705).

3. A desk and chair with a hand operated riser as claimed in claim 1 wherein: the large end face of the second bevel gear (705) far away from the handle (702) is rotationally connected with the inner side face of the fixed rod (701) and synchronously rotates with the transmission shaft (703), and the transmission shaft (703) can drive the other second bevel gear (705) to transversely slide.

4. A desk and chair with a hand operated riser as claimed in claim 1 wherein: a connecting rod (13) is welded between the support rods (5) at the bottom of the chair (10), a storage basket (11) is connected above the connecting rod (13) through bolts, and a second water leakage groove (12) is formed in the surface of the storage basket (11).