CN208550596U - A kind of learning chair seat back lifting device and learning chair - Google Patents

Abstract

The utility model provides a kind of learning chair seat back lifting device and learning chair, including the learning chair seat back lifting device includes supervisor, chair back profile and upper lock；Supervisor is the support construction of learning chair, is separately connected chair leg, seat and the chair back from bottom to top；Chair back profile is fixedly connected with the chair back, and lower end insertion can slide up and down in being responsible in supervisor；Upper latch components can lock the position of chair back profile and supervisor.The learning chair seat back lifting device is purely mechanic lifting, and reliance security is high；Chair back profile may be collapsible into supervisor, appearance looks elegant and saving space, and lifting reset is easy to operate, so that learning chair has certain growth, prolong the service life, and comfort enhances, the student and more crowds of suitable different age group.

Description

A kind of learning chair seat back lifting device and learning chair

Technical field

The utility model relates to a kind of height adjustment positioning mechanisms of learning chair chair back, in particular to a kind of to be suitable for children The learning chair seat back lifting device that uses and the learning chair for using the device.

Background technique

Indispensable tool when learning chair is children for learning, the most of also adjustable chair-back of learning chair currently on the market are high Degree, but be substantially the chair back and slide the device that lifting is positioned with bayonet lock on supervisor, it is inconvenient.And since supervisor's height cannot Flexible, when learning chair back top adjustment minimum by minimum seat height, supervisor's height is constant, and the supervisor being higher by influences parental guidance child Study, and unsightly, while also will affect installation.

Utility model content

The utility model is directed to disadvantage mentioned above, a kind of learning chair seat back lifting device is provided, to reach convenient and fast adjusting Learning chair height, and effectively lock, it adapts it to different school age difference height children and uses, protect the mesh of the health of child 's.

To achieve the above object, the utility model takes following technical proposals to realize:

A kind of learning chair seat back lifting device, including supervisor, chair back profile and upper lock；Supervisor is the support knot of learning chair Structure is separately connected chair leg component, seat assemblies and upper lock from bottom to top；Chair back profile is fixedly connected with chair back component, lower end It is inserted into supervisor and upper lock, can be slided up and down in supervisor and upper lock；Upper lock can be by the position of chair back profile and supervisor Locking.

Further, the upper lock includes that lid is buckled in locking, and lid is detained in locking, and lid is buckled in the locking and lid is detained in locking It cooperates, latches shell in formation.

Further, supervisor is equipped with upper locating location hole, and upper lock is equipped with locking and anchors bit architecture, and upper lock passes through locking It anchors bit architecture and is fixed on realization fixation in locating location hole.

Further, supervisor is equipped with the location hole positioned with chair back profile；Chair back profile is equipped with the location hole with supervisor Corresponding chair back profile location hole.

Further, upper lock is additionally provided with locking wrench, lock pin buckle axis, upper lock bolt and upper latch spring, locking Button spring is threaded through on locking pin buckle axis, and locking pin buckle axis is connect by upper lock bolt with upper locking wrench；Pull lock Spanner, upper fore shaft spring are compressed, and locking pin buckle axis is pulled out from the location hole of supervisor, is released between chair back profile and supervisor Positioning；Locking wrench in release, upper fore shaft spring reset, while driving locking mouth spanner to internal locking, pin buckle axis top of locking Enter the positioning hole of supervisor, realizes that the position between chair back profile and supervisor locks.

Further, the learning chair seat back lifting device further includes locking tile axis, and the locking tile axis is buckled in the chair back Profile lower end is located in supervisor.

Further, locking pin buckle axis is step-like, and one section of diameter is greater than another section of diameter.

Further, locking pin buckle axis is equipped with pin hole, and the pin hole is located at the small one end of diameter.

Further, washer there are two being arranged on locking pin buckle axis.

The present invention also provides a kind of learning chair, the learning chair is equipped with above-mentioned learning chair seat back lifting device.

In short, the utility model has the following beneficial effects: learning chair seat back lifting device provided by the utility model, is pure machine Tool lifting, reliance security are high；Chair back profile may be collapsible into supervisor, appearance looks elegant and saving space, lifter switch spring, bullet Piece resets simple to operate；So that learning chair has certain growth, prolong the service life, and comfort enhances, is suitble to More crowds and age bracket can preferably protect its health especially to children.

Detailed description of the invention

When Fig. 1 is minimum using the chair back of the learning chair of learning chair seat back lifting device in the utility model one embodiment Structural schematic diagram；

Structural schematic diagram when Fig. 2 is the chair back highest of learning chair in Fig. 1；

Fig. 3 is the explosive view of learning chair in Fig. 1；

Fig. 4 is the upper explosive view latched in Fig. 3；

Fig. 5 is the structural schematic diagram of locking pin buckle axis.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawing.

When Fig. 1 is minimum using the chair back of the learning chair of learning chair seat back lifting device in the utility model one embodiment Structural schematic diagram.Structural schematic diagram when Fig. 2 is the chair back highest of learning chair in Fig. 1.Fig. 3 is the explosion of learning chair in Fig. 1 Figure.

In conjunction with Fig. 1, Fig. 2 and Fig. 3 it is found that in the present embodiment, a kind of learning chair using learning chair seat back lifting device, institute Stating learning chair includes chair leg component 3, seat assemblies 4 and upper lock 5.Furthermore the learning chair in the present embodiment further includes 1 He of supervisor Chair back profile 2, upper lock 6.

Supervisor 1 is the support construction of learning chair, is separately connected chair leg component 3, seat assemblies 4 and upper lock 5 from bottom to top.

It is responsible for 1 two sides and is uniformly provided with multiple location holes 11.The side adjacent with the face where location hole 11 is equipped with locking Detain location hole 12.

2 upper end of chair back profile is fixedly connected with lock 5, and lower end can be inserted into supervisor 1, can slide up and down in supervisor 1, with Adjust different height of seat.Fig. 1 is the structural schematic diagram that chair back profile 2 is fully inserted into supervisor 1.Chair back profile 2 is equipped with Chair back profile location hole 21, the chair back profile location hole 21 are corresponding with location hole 11.

Locking tile axis 7 is provided with outside 2 lower end of chair back profile, the locking tile axis 7 is buckled in chair back profile lower end, can It is inserted in supervisor 1.Locking tile axis 7 can reduce the distance between chair back profile 2 and supervisor 1, so that chair back profile 2 is being responsible for Sliding in 1 is more smooth.

Upper lock 6 can lock the position of chair back profile 2 and supervisor 1.

Fig. 4 is the upper explosive view latched in Fig. 3.As shown in figure 4, the upper lock includes that lid 61, upper lock are buckled in locking Lower cover 62, lid 61 is buckled in the locking and the mutual cooperation of lid 62 is detained in locking, can be fixed by tapping screw, is latched in formation outer Shell.

Upper lock 6 is equipped with locking and anchors bit architecture 68, and upper lock 6, which by locking anchors bit architecture 68 and is fixed on locking, to be anchored It realizes and fixes in the hole 12 of position.

Upper lock is additionally provided with locking wrench 64, pin buckle axis 63 of locking, upper lock bolt 66, upper latch spring 65 and two Upper lock washer 67.

Fig. 5 is the structural schematic diagram of locking pin buckle axis.As shown in figure 5, locking pin buckle axis 63 is step-like, one section of diameter Diameter greater than another section.Wherein upper lock washer 67 and upper latch spring 65 are set on locking pin buckle axis, upper latch spring 65 are located between two upper lock washers 67.The diameter of the inner hole of upper lock washer 67 is less than one section of 63 major diameter of pin buckle axis of locking 's.

In addition, locking pin buckle axis 63 is equipped with pin hole 631, the pin hole 631 is located at the small one end of diameter.

Upper lock bolt 66 passes through the pin hole 631 on hole and locking pin buckle axis 63 in upper locking wrench 64, so that on Locking wrench 64 and locking pin buckle axis 63 are articulated and connected.

The learning chair seat back lifting device of the utility model in use, pull locking wrench 64, by lever principle and Upper lock bolt 66 extracts upper lock shaft pin 63, drives locking by the step surface on upper lock shaft pin 53 in withdrawal process Detaining washer 67, axially outward movement compresses upper latch spring 65 together.After upper lock shaft pin 63 extracts limit hole 11, Ji Kela Dynamic upper locking wrench 64, makes lock 3 move up and down.

Upper locking wrench 64 is unclamped after being adjusted to suitable position, because upper latch spring 65 is compressed, by screen resilience Washer 67 is latched, upper lock washer 67 moves upper lock shaft pin shaft 63 to inside by the step on upper lock shaft pin 63, from And enter limit hole 11, it is positioned, chair back profile 2 is prevented to latch 3 from moving up and down with upper.

Although the utility model has been disclosed in the preferred embodiments as above, the utility model is not limited to this.Any Field technical staff can make various changes or modifications without departing from the spirit and scope of the utility model, therefore this is practical Novel protection scope should be defined by the scope defined by the claims..

Claims (10)

1. a kind of learning chair seat back lifting device, which is characterized in that the learning chair seat back lifting device includes supervisor, chair back type Material and upper lock；

Supervisor is the support construction of learning chair, is separately connected chair leg component, seat assemblies and upper lock from bottom to top；

Chair back profile is fixedly connected with chair back component, and lower end is inserted into supervisor and upper lock, can be in supervisor and upper lock up and down Sliding；

Upper lock can lock the position of chair back profile and supervisor.

2. learning chair seat back lifting device according to claim 1, which is characterized in that the upper lock includes that locking is buckled Lid is detained in lid, locking, and lid is buckled in the locking and locking detains lid and cooperates, and latches shell in formation.

3. learning chair seat back lifting device according to claim 1, which is characterized in that supervisor is equipped with upper locating location Hole, upper lock anchor bit architecture equipped with locking, and upper lock anchors bit architecture by locking and is fixed on realization in locating location hole It is fixed.

4. learning chair seat back lifting device according to claim 1, which is characterized in that supervisor is equipped with fixed with chair back profile The location hole of position；Chair back profile is equipped with chair back profile location hole corresponding with the location hole of supervisor.

5. learning chair seat back lifting device according to claim 4, which is characterized in that upper lock is additionally provided with lock and pulls Hand, lock pin buckle axis, upper lock bolt and upper latch spring, upper latch spring are threaded through on locking pin buckle axis, pin buckle axis of locking It is connect by upper lock bolt with upper locking wrench；Pull locking wrench, upper fore shaft spring is compressed, will locking pin buckle axis from It is pulled out in the location hole of supervisor, releases the positioning between chair back profile and supervisor；Locking wrench in release, upper fore shaft spring are multiple Position, while driving locking mouth spanner to internal locking, pin buckle axis of locking heads into the positioning hole of supervisor, realizes chair back profile and supervisor Between position locking.

6. learning chair seat back lifting device according to claim 1, which is characterized in that the learning chair seat back lifting device It further include locking tile axis, the locking tile axis is buckled in chair back profile lower end, is located in supervisor.

7. learning chair seat back lifting device according to claim 1, which is characterized in that locking pin buckle axis be it is step-like, one The diameter of section is greater than another section of diameter.

8. learning chair seat back lifting device according to claim 7, which is characterized in that locking pin buckle axis is equipped with bolt Hole, the pin hole are located at the small one end of diameter.

9. learning chair seat back lifting device according to claim 7, which is characterized in that there are two being arranged on locking pin buckle axis Washer.

10. a kind of learning chair, which is characterized in that the learning chair is equipped with learning chair as described in any one of claims 1-9 Seat back lifting device.