CN218044484U - Dining chair capable of being positioned - Google Patents

Abstract

The utility model relates to a dining chair field, concretely relates to dining chair that can fix a position. Including four-legged support, four-legged support upper end internal fixation has the seat, four-legged support's landing leg lower extreme all is fixed with vertical stand, the universal wheel is all installed to the stand lower extreme, the lifter with erect groove sliding fit, the perpendicular inslot of lifter top all is fixed with the spring, the lifter below is provided with the bull stick, both sides all are fixed with the cam around the bull stick, the nearly heart-end of cam is towards the top, vertical draw-in groove has been seted up on the nearly heart-end of cam, the lifter joint is in the draw-in groove, the heart-end of cam and the lower extreme parallel and level of universal wheel, be fixed with flexible rubber strip on the heart-end outer fringe of cam, the arc wall has been seted up on the left of the cam, the bull stick middle part is fixed with the fixed plate, four-legged support upper portion left side is provided with and is used for driving the drive arrangement that the lifter went upward. The utility model discloses, simple structure, convenient maintenance, convenient operation, can be quick, convenient fix a position stably, stability can be good to the dining chair.

Description

Dining chair capable of being positioned

Technical Field

The utility model relates to a dining chair field, concretely relates to dining chair that can fix a position.

Background

Need use children's dining chair when children have dinner, current children's dining chair is for removing the convenience, all install the universal wheel in dining chair lower extreme four corners, but when feeding children, children rock on dining chair easily, dining chair removes easily, it is unstable, consequently, the influence is fed children and is eaten, but partial dining chair adopts the universal wheel that can lock, but when carrying out the locking to the universal wheel, still need rotate the universal wheel when the locking plate towards dining chair central direction, make the locking plate of universal wheel towards trample the locking plate again behind the outside and carry out the locking to the universal wheel, during the locking universal wheel, just can fix a position dining chair after two universal wheels carry out the locking at least, it is very inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a simple structure, convenient to use can conveniently fix a position stably, the dining chair that can fix a position that stability can be good to the dining chair.

In order to realize the purpose, the utility model provides a technical scheme is:

the utility model provides a dining chair that can fix a position, including four leg support, four leg support upper end internal fixation have the seat, four landing leg lower extremes of four leg support all are fixed with vertical stand, the universal wheel is all installed to the stand lower extreme, all seted up on the left front and back stand and erect the groove, two vertical grooves around fore-and-after vertical lifter runs through, lifter and perpendicular groove sliding fit, all be fixed with the spring in the perpendicular inslot of lifter top, the spring lower extreme tightly supports the lifter upper end, the lifter below is provided with the bull stick rather than parallel, the bull stick rotates with left front and back coexistence post to be connected, both sides all are fixed with the cam around the bull stick, the nearly heart end of cam is towards the top, vertical draw-in groove has been seted up on the nearly heart end of cam, the lifter joint is in the draw-in groove, the heart end of cam and the lower extreme parallel and level of universal wheel, be fixed with flexible rubber strip on the far heart end outer fringe of cam, the arc wall has been seted up on the left of cam, the bull stick middle part is fixed with the fixed plate, four leg support upper portion left side is provided with and is used for driving arrangement who drives the lifter upward movement.

Specifically, the driving device comprises support plates fixed on the left front support leg and the left rear support leg, vertical long grooves are formed in the support plates, a longitudinal shifting rod penetrates through the front long groove and the rear long groove, the shifting rod is in sliding fit with the long grooves, and the shifting rod is connected with the lifting rod through a pull rope.

Specifically, the upper end of the spring is fixedly connected with the upper groove wall of the vertical groove where the spring is located.

Specifically, the front end and the rear end of the lifting rod are respectively fixed with a baffle ring, and the baffle rings are in sliding contact with the stand column on one side of the baffle rings.

Specifically, the front end and the rear end of the shifting lever are respectively fixed with a baffle plate, and the baffle plates are in sliding contact with the support plate on one side of the baffle plate.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses, simple structure, convenient maintenance, convenient operation when stabilizing the dining chair for elastic rubber strip and the ground contact in the outer fringe of cam telecentric end utilize the frictional force between elastic rubber strip and the ground to stabilize the dining chair, can be quick, convenient fix a position stably, stability can be good to the dining chair.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a sectional view taken along line a in fig. 1.

Fig. 3 is a three-dimensional view of the lifter in cooperation with the slot.

Detailed Description

As shown in fig. 1-3, a positionable dining chair comprises a four-leg support 2, a seat plate 1 is fixed in the upper end of the four-leg support 2, vertical upright posts 3 are fixed at the lower ends of four legs of the four-leg support 2, universal wheels 4 are mounted at the lower ends of the upright posts 3, vertical slots 5 are formed on the left front upright post and the left rear upright post 3, a longitudinal lifting rod 6 penetrates through the front vertical slot and the rear vertical slot 5, the lifting rod 6 is in sliding fit with the vertical slots 5, a retaining ring 7 is fixed at each of the front end and the rear end of the lifting rod 6, the retaining ring 7 is in sliding contact with the upright post 3 on one side of the retaining ring, a spring 8 is fixed in each vertical slot 5 above the lifting rod 6, the upper end of the spring 8 is fixedly connected with the upper slot wall of the vertical slot 5 where the spring is located, the lower extreme of spring 8 tightly supports 6 upper ends of lifter, 6 below of lifter is provided with bull stick 9 rather than parallel, bull stick 9 rotates with left front and back two stands 3 to be connected, both sides all are fixed with cam 10 around the bull stick 9, the nearly heart end of cam 10 is towards the top, vertical draw-in groove 19 has been seted up on the nearly heart end of cam 10, 6 joints of lifter are in draw-in groove 19, the telecentric end of cam 10 and the lower extreme parallel and level of universal wheel 4, be fixed with elastic rubber strip 11 on the telecentric end outer fringe of cam 10, arc wall 13 has been seted up on the left of cam 10, bull stick 9 middle part is fixed with fixed plate 12, 2 upper portion left sides of four-legged support are provided with and are used for driving the drive arrangement that lifter 6 went upward.

The driving device comprises a support plate 14 fixed on the left front support leg and the left rear support leg, vertical long grooves 15 are formed in the support plate 14, a longitudinal pulling rod 17 penetrates through the front long groove 15 and the rear long groove 15, the pulling rod 17 is in sliding fit with the long grooves 15, baffle plates 18 are fixed at the front end and the rear end of the pulling rod 17, the baffle plates 18 are in sliding contact with the support plate 14 on one side of the baffle plates 18, and the pulling rod 17 is connected with the lifting rod 6 through a pulling rope 16.

When the dining chair needs to be moved, the pulling rod 17 is lifted up, when the pulling rod 17 is lifted up, the pulling rod 17 enables the lifting rod 6 to move upwards in the vertical groove 5 through the pulling rope 16 and compress the spring 8, after the pulling rod 17 is contacted with the upper groove wall of the long groove 15, the lifting rod 6 exits from the clamping groove 19, then the tiptoe upwards pulls the fixed plate 12, the rotating rod 9 and the cam 10 rotate clockwise around the axis of the rotating rod 9, after the fixed plate 12, the rotating rod 9 and the cam 10 rotate, the pulling rod 7 is released, the lifting rod 6 is in sliding contact with the outer edge of the cam 10 under the action of the elastic force of the spring 8, along with the rotation of the cam 10, after the lifting rod 6 enters the arc-shaped groove 13, the lifting rod 6 stabilizes the cam 10, at the elastic rubber strip 11 on the outer edge of the far-center end of the cam 10 is separated from the ground, and at the moment, the dining chair can be moved through the universal wheel 4.

When needs are fixed a position this dining chair once more, directly utilize the sole to trample fixed plate 12, make fixed plate 12, bull stick 9 and cam 10 are around the axle center anticlockwise rotation of bull stick 9, the in-process of cam 10 anticlockwise rotation, lifter 6 withdraws from the back in the arc wall 13 and cam 10 outer fringe sliding contact, after lifter 6 corresponds with draw-in groove 19, under the spring action of spring 8, 6 joints of lifter advance in the draw-in groove 19, lifter 6 can fix a position cam 10 this moment, elastic deformation takes place and contacts with ground for elastic rubber strip 11 on the outer fringe of cam 10 telecentric end, this moment under this dining chair and the action of gravity of sitting children on seat 1, produce more frictional force between elastic rubber strip 11 and the ground, consequently, can fix a position this dining chair stably.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a dining chair that can fix a position, including four leg support, four leg support upper end internal fixation has the seat, a serial communication port, four leg support's four landing leg lower extremes all are fixed with vertical stand, the universal wheel is all installed to the stand lower extreme, vertical groove has all been seted up on the left front and back two stands, two vertical grooves around longitudinal lifter runs through, lifter and vertical groove sliding fit, all be fixed with the spring in the vertical inslot of lifter top, the spring lower extreme tightly supports the lifter upper end, the lifter below is provided with the bull stick rather than being parallel, the bull stick is connected with left front and back coexistence post rotation, both sides all are fixed with the cam around the bull stick, the proximal end of cam is towards the top, vertical draw-in groove has been seted up on the proximal end of cam, the lifter joint is in the draw-in groove, the distal end of cam and the lower extreme parallel and level of universal wheel, be fixed with flexible rubber strip on the distal end outer fringe of cam, the arc wall has been seted up on the left side of cam, the bull stick middle part is fixed with the fixed plate, four leg support upper portion left side is provided with and is used for driving device that drives the lifter upward movement.

2. A positionable dining chair according to claim 1, wherein said drive means comprises a support plate attached to the left side of said legs, said support plate having an elongated vertical slot, a longitudinal pull rod extending through said slots, said pull rod being slidably engaged with said slot, said pull rod being connected to said lifting rod by a pull cord.

3. A positionable dining chair according to claim 1, wherein the upper ends of said springs are fixedly connected to the upper walls of said vertical channels.

4. A dining chair as claimed in claim 1, wherein the lifting/lowering bar is secured at each of its front and rear ends to a retaining ring which is in sliding contact with the upright on one side thereof.

5. A positionable dining chair according to claim 2, wherein said arm is fixed at each of its front and rear ends with a stop which is in sliding contact with a leg on one side thereof.

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