CN211323650U

CN211323650U - Improved student desk and chair up-down free adjusting mechanism

Info

Publication number: CN211323650U
Application number: CN201922208407.4U
Authority: CN
Inventors: 杨益民
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-08-25
Anticipated expiration: 2029-12-11

Abstract

Improved generation student's desk chair is from top to bottom freely adjustment mechanism, including upper and lower sleeve pipe, establish the fixing base in the upper sleeve pipe lower extreme, seted up in the fixing base and perforated to and left and right through-hole, establish the regulating plate in the lower sleeve pipe, the regulating plate passes the perforation, and open in the regulating plate about two vertical regulation holes, control and form the intermediate lamella between two regulation holes, the intermediate lamella both sides system has the screens groove, left and right through-holeThe middle of the adjusting plate is respectively provided with a clamping pin, the left clamping pin and the right clamping pin are connected with a front tension spring and a rear tension spring, the clamping pins are matched with clamping grooves or adjusting holes, the front side and the rear side of the adjusting plate are respectively provided with a lifting slide sheet, and the width S of the lifting slide sheet₁Is larger than the left and right adjusting holes S₂The width of (2), lift gleitbretter both sides system has the chute, and the screens round pin cooperatees with the chute, and lift gleitbretter upper portion is higher than the fixing base, and the lift gleitbretter has the jack in the overhead portion system, and the jack is corresponding with the regulation hole, inserts the bolt in the jack, and the pulling device is connected to the lift gleitbretter, and the pulling device drives the lift gleitbretter and slides.

Description

Improved student desk and chair up-down free adjusting mechanism

Technical Field

The utility model relates to a student desk and chair, in particular to an improved student desk and chair up-down free adjusting mechanism.

Background

The specifications of desks and chairs in primary and secondary schools are generally more uniform, but the height difference of the students is larger, in order to meet the requirements of students with different heights, table and chair legs capable of adjusting the heights of the table and the chair are developed in recent years, the traditional table and chair leg adjustment is that connecting plates are arranged at two sides of the table and the chair, a plurality of adjusting holes with different heights are formed on the connecting plates, fixing holes are arranged on the table and chair legs, two sides of the table and chair legs respectively pass through the adjusting holes and the fixing holes through two studs and are fixed through nuts, the lifting of the table and chair legs corresponds to the adjusting holes with different heights through the adjusting fixing holes to achieve the adjustment of the lifting, this structure all will be earlier twisted off stud and nut when adjusting at every turn, again with the fixed orifices corresponding with the regulation hole of required height, screws up stud and nut at last, and the operation is very troublesome, hard, and the governing speed is slow, and operates alone inconveniently. Therefore, the applicant filed the Chinese patent 201810677900.8 with patent name "student desk and chair freely adjusting mechanism", which comprises an upper sleeve and a lower sleeve, wherein the upper end of the upper sleeve is connected with a desk or a chair, the lower end of the lower sleeve is connected with a desk foot or a chair foot, the upper sleeve is inserted into the lower sleeve, the lower end of the upper sleeve is internally provided with a fixed seat, a through hole, a front slide sheet hole, a rear slide sheet hole, a left through hole and a right through hole are arranged in the fixed seat, an adjusting plate is arranged in the through hole, a vertical adjusting hole is arranged in the adjusting plate, a middle plate is formed between the vertical adjusting holes, clamping grooves are formed on two sides of the middle plate, lifting slide sheets are respectively arranged in the front slide sheet hole and the rear slide sheet hole, the upper end of each lifting slide sheet is connected with a slide sheet driving device, two sides of each lifting slide sheet are straight surfaces, inclined grooves are formed in two sides of each lifting, the position clamping pin is matched with the straight surfaces or the inclined grooves on the two sides of the lifting sliding sheet. The structure has the following disadvantages: firstly, the lifting sliding piece is required to be lengthened to be driven to lift through the sliding piece driving device, and the lifting sliding piece is too long, poor in strength and easy to deform; secondly, the width of the lifting sliding piece is smaller than that of the middle plate, and when the lifting sliding piece is operated, the lifting sliding piece is easy to pull over the head to be separated from the clamping pins, so that the function of the lifting sliding piece is invalid, and the lifting sliding piece is very troublesome to be clamped between the left clamping pin and the right clamping pin; and thirdly, the lifting slide sheet is pulled upwards or reset by manual operation, and the operation is troublesome.

Disclosure of Invention

The utility model aims at overcoming the shortcoming that prior art exists, provide one kind and avoid the lift gleitbretter to pull over the head, automatic re-setting after the lift gleitbretter is pulled up, convenient operation, simple structure's improved generation student desk chair is from top to bottom free adjustment mechanism.

The utility model discloses free adjustment mechanism's from top to bottom technical scheme is in improved generation student's desk chair: including last sleeve pipe and lower casing, go up sheathed tube upper end and connect desk or seat, table footing or seat footing are connected to the lower extreme of lower casing, go up during the sleeve pipe inserts the lower casing, set up the fixing base in last sleeve pipe lower extreme, open the perforation that has a perfect understanding from top to bottom in the fixing base to and the left through-hole and the right through-hole that link up around, the lower casing in set up the regulating plate, the regulating plate passes the perforation, has about two vertical regulation holes of controlling to open in the regulating plate, about two vertical regulation holes form the intermediate lamella, intermediate lamella both sides system has corresponding screens groove, sets up the screens round pin in the left and right through-hole of fixing base respectively, controls two extension springs around connecting between two screens round pin, screens round pin and screens groove or regulation hole cooperate, the perforation be located the front side and the rear side of regulating plate and set up the lift gleitbretter₁Is larger than the left and right adjusting holes S₂The width of (2), the both sides system of lift gleitbretter has the chute, and the screens round pin cooperatees with the chute, and the upper portion of lift gleitbretter is higher than the fixing base, and the system has the jack in the higher part of lift gleitbretter, and the jack is corresponding with vertical regulation hole in the regulating plate, inserts the bolt in the jack, and the pulling device is connected to the lift gleitbretter, and the pulling device drives the lift gleitbretter and slides.

The utility model discloses an improved generation student desk chair freely adjusting mechanism from top to bottom, mainly set up the regulating plate in the perforation of fixing base, the front side and the rear side of regulating plate set up the lift gleitbretter respectively (namely lift gleitbretter passes the perforation with the regulating plate), and the width of lift gleitbretter is less than the width of regulating plate, and is greater than the width of two regulation holes on the left and right sides, the upper portion of lift gleitbretter is slightly higher than the fixing base, its higher part has the jack, pass the jack of lift gleitbretter and the regulation hole of regulating plate through the bolt, the bolt fixedly connects front and back two lift gleitbretters, and the bolt can slide up and down along the vertical regulation hole, the lift gleitbretter is connected to the outside of upper casing through the pulling device, when carrying out the up-and-down adjustment operation to desk and seat, people drive the lift gle, under the guide effect of chute, make the screens round pin remove to the outside gradually, the screens groove of intermediate lamella both sides is outwards deviate from to the screens round pin, the intermediate lamella can't carry on spacingly to the screens round pin this moment, people can drive desk and seat support and reciprocate the regulation, after putting in place when adjusting, loosen pulling device, the extension spring drives the screens round pin and inwards removes under the effect of restoring force, the screens round pin blocks the screens inslot again and obtains spacingly, the screens round pin cooperates with the chute of lift gleitbretter, it resets downwards to drive the lift gleitbretter. According to the improved student desk and chair vertical free adjusting mechanism, firstly, the length of the lifting sliding piece is shortened, the front lifting sliding piece and the rear lifting sliding piece are fixedly connected through the bolt, and then the lifting sliding piece is driven to lift by the pulling device, so that the structure is simple, and the manufacturing cost is reduced; two, increase the width of lift gleitbretter, the width of lift gleitbretter is less than the width of regulating plate, and be greater than about two width of adjusting the hole, the chute just can't be deviate from to this kind of screens round pin, when avoiding appearing in the lift operation, people will go up and down the gleitbretter and pull the head, in addition when people loosen pulling device, the screens round pin is automatic inwards reseing under the pulling force effect of extension spring, screens round pin and chute cooperation drive lift gleitbretter reset simultaneously, need not manual reset, it is more laborsaving, convenient to operate.

The utility model discloses free adjustment mechanism about improved generation student's desk chair, the pulling device includes the overcoat, and the overcoat cover has the through-hole in the upper portion outer wall of lift gleitbretter, and the through-hole is corresponding with the jack, inserts the bolt in through-hole and the jack, and it has the go-between to make at the outer wall of overcoat, and steel wire or stay cord are connected to the go-between, and the another of steel wire or stay cord passes the upper shield pipe. People's accessible steel wire or stay cord drive the go-between, and the go-between drives the overcoat and upwards draws and rise, and the overcoat drives bolt and lift gleitbretter and rises, and steel wire or stay cord expose and go up parts such as cover partial joinable rotation or handle, make people's operation more convenient, also can set up the connecting hole on the lift gleitbretter in addition, pass the connecting hole with steel wire or stay cord, directly drive the lift gleitbretter and rise. The outer wall of the fixed seat is provided with a reinforcing sheet. The reinforcing sheet is arranged, and the structural strength of the fixing seat is improved.

Drawings

FIG. 1 is a schematic structural view of an improved student desk and chair up-down free adjustment mechanism;

FIG. 2 is a perspective view of the fixing base, the adjusting plate, the lifting slide plate, the position-locking pin, and the tension spring;

FIG. 3 is a perspective view of the adjusting plate and the lifting slider in a fitted state;

FIG. 4 is a schematic front view of the adjusting plate and the lifting slider in cooperation;

FIG. 5 is a perspective view of the outer cover;

fig. 6 is a perspective view of the fixing base.

Detailed Description

The utility model relates to an improved free adjusting mechanism for student desk and chair, as shown in figure 1-figure 6, comprising an upper sleeve 1 and a lower sleeve 2, wherein the upper end of the upper sleeve is connected with a desk or a chair, the lower end of the lower sleeve is connected with a desk footing 30 or a chair footing, the upper sleeve is inserted into the lower sleeve, a fixed seat 4 is arranged in the lower end of the upper sleeve 1, a through hole 5 which is communicated up and down, a left through hole 6 and a right through hole 7 which are communicated front and back are arranged in the fixed seat, an adjusting plate 8 is arranged in the lower sleeve 2, the adjusting plate passes through the through hole 5, a left vertical adjusting hole 9 and a right vertical adjusting hole 9 are arranged in the adjusting plate, a middle plate 10 is formed between the left vertical adjusting hole and the right vertical adjusting hole, corresponding clamping grooves 11 are arranged on both sides of the middle plate, clamping pins 12 are respectively arranged in the left through hole 6 and the right through hole 7 of the fixed seat 4, a front, the through hole 5 is arranged at the front side and the rear side of the adjusting plate 8 and is respectively provided with a lifting slide sheet 14, and the width S of the lifting slide sheet₁Is larger than the left and right adjusting holes S₂The two sides of the lifting sliding sheet are provided with chutes 15, the clamping pin 12 is matched with the chutes 15 to liftThe upper portion of the slip sheet 14 that falls is higher than the fixing base 4, and the system has jack 16 in the higher part of the slip sheet that falls, and the jack is corresponding with vertical regulation hole 9 in the regulating plate 8, inserts bolt 19 in the jack, and pulling device is connected to the slip sheet that falls, and pulling device drives the slip sheet that falls and slides. Mainly, an adjusting plate 8 is arranged in a through hole 5 of a fixed seat 4, a lifting sliding sheet 14 is respectively arranged at the front side and the rear side of the adjusting plate (namely, the lifting sliding sheet and the adjusting plate pass through the through hole), the width of the lifting sliding sheet 14 is smaller than that of the adjusting plate 8 and is larger than that of a left adjusting hole and a right adjusting hole 9, the upper part of the lifting sliding sheet 14 is slightly higher than that of the fixed seat 4, a jack 16 is arranged at the higher part of the lifting sliding sheet 14, a bolt 19 passes through the jack 16 of the lifting sliding sheet 14 and the adjusting hole 9 of the adjusting plate 8, the bolt 19 is fixedly connected with the front lifting sliding sheet and the rear lifting sliding sheet, the bolt can slide up and down along the vertical adjusting hole, the lifting sliding sheet 14 is connected to the outside of an upper sleeve 1 through a pulling device, when a desk and a seat are adjusted up and down, people drive, under the guide effect of chute, make the screens round pin move to the outside gradually, the screens groove 11 of screens round pin outside deviating from intermediate lamella 10 both sides, the intermediate lamella can't carry on spacingly to screens round pin 12 this moment, people can drive desk and seat support and reciprocate to adjust, after adjusting to target in place, loosen the pulling device, extension spring 13 drives screens round pin 12 and inwards removes under the effect of restoring force, the screens round pin blocks into screens inslot 11 again and obtains spacingly, screens round pin and lift gleitbretter 14's chute 15 cooperation, drive the lift gleitbretter and reset downwards. According to the improved student desk and chair vertical free adjusting mechanism, firstly, the length of the lifting sliding piece 14 is shortened, the front lifting sliding piece 14 and the rear lifting sliding piece 14 are fixedly connected through the bolt 19, and then the lifting sliding piece is driven to lift by the pulling device, so that the structure is simple, and the manufacturing cost is reduced; two, increase the width of lift gleitbretter 14, the width of lift gleitbretter is less than the width of regulating plate 8, and be greater than about two width of regulation hole 9, so screens round pin 12 just can't deviate from chute 15, when avoiding appearing lifting operation, people will go up and down gleitbretter 14 and pull the head, in addition when people loosen the pulling device, screens round pin 12 is automatic inside to reset under the pulling force effect of extension spring 13, screens round pin 12 takes with chute 15 cooperation simultaneouslyThe movable lifting sliding piece 14 is reset without manual reset, and the operation is more labor-saving and convenient. The pulling device comprises an outer sleeve 17, the outer sleeve is sleeved on the outer wall of the upper part of the lifting slide sheet 14, a through hole 18 is formed in the outer sleeve and corresponds to the jack 16, a bolt 19 is inserted into the through hole and the jack, a connecting ring 20 is formed on the outer wall of the outer sleeve 17 and is connected with a steel wire or a pull rope, and the other end of the steel wire or the pull rope penetrates through the upper sleeve 1. People's accessible steel wire or stay cord drive go-between 20, and the go-between drives overcoat 17 and upwards draws and rises, and the overcoat drives bolt 19 and lift gleitbretter 14 and rises, and steel wire or stay cord expose and go up parts such as sleeve pipe 1 part joinable rotation or handle, make people's operation more convenient, also can set up the connecting hole on lift gleitbretter 14 in addition, pass the connecting hole with steel wire or stay cord, directly drive lift gleitbretter 14 and rise. The outer wall of the fixed seat 4 is provided with a reinforcing sheet 21. The reinforcing sheet 21 improves the structural strength of the fixed seat 4.

Claims

1. An improved free adjusting mechanism for student desks and chairs comprises an upper sleeve (1) and a lower sleeve (2), wherein the upper end of the upper sleeve is connected with a desk or a seat, the lower end of the lower sleeve is connected with desk feet (30) or chair feet, the upper sleeve is inserted into the lower sleeve, a fixing seat (4) is arranged at the lower end of the upper sleeve (1), a through hole (5) which is through from top to bottom and a left through hole (6) and a right through hole (7) which are through from front to back are formed in the fixing seat, an adjusting plate (8) is arranged in the lower sleeve (2), the adjusting plate penetrates through the through hole (5), a left vertical adjusting hole and a right vertical adjusting hole (9) are formed in the adjusting plate, a middle plate (10) is formed between the left vertical adjusting hole and the right vertical adjusting hole, clamping grooves (11) are formed in two sides of the middle plate, clamping pins (12) are respectively arranged in the left through hole (6) and, screens round pin cooperatees with screens groove (11) or regulation hole (9), its characterized in that: the perforation (5) is positioned at the front side and the rear side of the adjusting plate (8) and is respectively provided with a lifting sliding sheet (14), and the width S of the lifting sliding sheet₁Is larger than the left and right adjusting holes S₂The two sides of the lifting sliding sheet are provided with chutes (15), clamping pins (12) and chutes(15) Cooperate, the upper portion of lift gleitbretter (14) is higher than fixing base (4), and the system has jack (16) in the higher part of lift gleitbretter, and jack and regulating plate (8) in vertical regulation hole (9) corresponding, insert bolt (19) in the jack, the pulling device is connected to the lift gleitbretter, and the pulling device drives the lift gleitbretter and slides.

2. The improved student desk and chair vertical free adjusting mechanism as claimed in claim 1, wherein: the pulling device comprises an outer sleeve (17), the outer sleeve is sleeved on the outer wall of the upper portion of the lifting sliding sheet (14), a through hole (18) is formed in the outer sleeve and corresponds to the jack (16), a bolt (19) is inserted into the through hole and the jack, a connecting ring (20) is formed in the outer wall of the outer sleeve (17), the connecting ring is connected with a steel wire or a pull rope, and the other end of the steel wire or the pull rope penetrates through the upper sleeve (1).

3. The improved student desk and chair vertical free adjusting mechanism as claimed in claim 1, wherein: the outer wall of the fixed seat (4) is provided with a reinforcing sheet (21).