CN211408333U - Screw lifting rotation stopping rod - Google Patents

Abstract

The utility model discloses a screw rod lift rotary stop lever, including end cap, conical head inner tube, bead sleeve pipe, uide bushing, plain washer A, screw rod, outer riser, built-in nut, plane bearing, end backing sheet, plain washer B, thick hexagon nut, bottom, the fixed built-in nut that is provided with of conical head inner tube lower extreme, built-in nut's inside is provided with the screw rod, plain washer A is connected through the riveting in the screw rod upper end, the bead sleeve pipe is established to the outside cover of conical head inner tube, the uide bushing is established to the outside cover of bead sleeve pipe, outer riser is established to the outside cover of uide bushing, the bottom is established to the outside cover of thick hexagon nut, the fixed end cap that is provided with in upper end of conical head inner tube. The utility model discloses the product has abandoned high-pressure gas's use structurally, directly uses the most general mechanical type threaded connection driven mode, the utility model discloses the product can utilize the equipment and the technology of present atmospheric pressure stick production again furthest, can realize mass production at once, has also reduced manufacturing cost simultaneously.

Description

Screw lifting rotation stopping rod

Technical Field

The utility model relates to a lift swivel chair technical field especially relates to a screw rod goes up and down to end bull stick.

Background

The lifting swivel chairs in the current market mostly adopt a high-pressure air pressure rod to realize the lifting adjustment and the rotation functions of the chairs. The air pressure rod is used for filling high-pressure nitrogen into the air cylinder, and the pressure difference between two ends of a piston in the air cylinder is utilized to push the piston rod to move so as to push the chair to lift. The chair using the air pressure rod is convenient and flexible to use, so the chair is most widely used in the market. However, with the change of domestic economy and living standards, people are in the initiative for the next generation of cares and safety, and do not want to use the high-pressure gas pressure rod when the child seat is lifted, and worry about the danger caused by the leakage of high-pressure gas, so that a great proportion of people hope to use a seat lifting mechanism without high-pressure gas on the child seat.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the partial technical problem of the prior art and providing a screw rod lift spline.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a screw rod lift rotation stopping rod, includes end cap, conical head inner tube, bead sleeve pipe, uide bushing, plain washer A, screw rod, outer riser, built-in nut, planar bearing, end backing sheet, plain washer B, thick hexagon nut, bottom, the fixed built-in nut that is provided with of conical head inner tube lower extreme, the inside of built-in nut is provided with the screw rod, flat washer A is connected through the riveting in the screw rod upper end, the bead sleeve pipe is established to the outside cover of conical head inner tube, the uide bushing is established to the outside cover of bead sleeve pipe, outer riser is established to the outside cover of uide bushing, planar bearing, end backing sheet, plain washer B, thick hexagon nut are established to the lower extreme of screw rod cover in proper order, the bottom is established to the outside cover of thick hexagon nut, the fixed end cap that is provided.

Preferably, the conical head inner pipe is connected with the built-in nut in a spin riveting or welding mode.

Preferably, the built-in nut is connected with the screw rod through threads.

Preferably, the screw rod is connected with the thick hexagonal nut through threads.

Preferably, the end plug is connected with the conical head inner pipe in an interference press-in mode.

Preferably, the outer part of the convex rib sleeve is provided with a convex rib which is buckled with a tooth groove arranged on an inner hole of the guide sleeve. And can slide relatively.

Preferably, the screw is axially fixed and immovable, but can rotate; the built-in nut is fixed in the lower end of the conical head inner pipe, cannot rotate, but can move axially, and then the conical head inner pipe can be driven to lift together.

The utility model discloses following beneficial effect has: the lower end of the screw rod is axially fixed but can rotate by utilizing the relative rotation of the screw rod and the built-in nut, the built-in nut is fixedly connected to the bottom end inner hole of the conical head inner tube, so that the built-in nut is inevitably moved up and down by the rotation of the screw rod, the conical head inner tube is pushed to move up and down simultaneously, and the conical head inner tube is connected with the bottom of a chair seat, so that the chair seat is lifted up and down. The convex edge sleeve is fixedly connected outside the conical head inner tube in an interference fit manner. The outer vertical pipe is in self-locking connection with the chair chassis base through the conical head, and the guide sleeve is fixedly connected with the outer vertical pipe in an interference fit manner. The inner hole of the guide sleeve is provided with tooth grooves, the number of the tooth grooves is the same as that of the ribs on the rib pipes, clearance fit is formed, the chair can axially slide but cannot circumferentially rotate, and therefore the functional requirements that the chair can only be lifted and cannot rotate are met. The small screw part of the lower end head of the screw penetrates through the inner hole of the plane bearing and is supported on the bottom support piece at the bottom of the outer vertical pipe, the lower part of the screw is locked by the thick hexagon nut, the thick hexagon nut is fixedly connected with the lower end of the small screw part on the screw end head in a welding manner, and finally, the bottom cover with the hexagonal hole is sleeved on the thick hexagon nut, so that the screw can rotate only by rotating the bottom cover, and meanwhile, the built-in nut and the cone head inner pipe are pushed to lift, namely, the chair lifts. The utility model discloses the product has abandoned high-pressure gas's use structurally, directly uses the most general mechanical type threaded connection driven mode, has realized the lift of chair and has only changeed the function, has satisfied people and has expected to children's seat's function and safety, simultaneously, the utility model discloses the product can utilize the equipment and the technology of present atmospheric pressure stick production at utmost again, can realize mass production at once, has also reduced manufacturing cost simultaneously.

Drawings

Fig. 1 is a schematic structural view of the screw lifting rotation stopping rod provided by the utility model.

In the figure: the end plug comprises an end plug 1, a conical head inner tube 2, a ribbed sleeve 3, a guide sleeve 4, a flat washer A5, a screw rod 6, an outer vertical tube 7, an internal nut 8, a plane bearing 9, a bottom support sheet 10, a flat washer B11, a thick hexagonal nut 12 and a bottom cover 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1, a screw lifting rotation-stopping rod comprises an end plug 1, a conical head inner tube 2, a ribbed sleeve 3, a guide sleeve 4, a flat washer A5, a screw 6, an outer vertical tube 7, an inner nut 8, a flat bearing 9, a bottom support sheet 10, a flat washer B11, a thick hexagon nut 12 and a bottom cover 13, the lower end of the conical head inner pipe 2 is fixedly provided with an internal nut 8, the internal part of the internal nut 8 is provided with a screw 6, the upper end of the screw rod 6 is connected with a flat washer A5 through riveting, the outside of the conical head inner tube 2 is sleeved with a convex edge sleeve 3, the guide sleeve 4 is sleeved outside the rib sleeve 3, the outer vertical pipe 7 is sleeved outside the guide sleeve 4, the lower end of the screw rod 6 is sequentially sleeved with a plane bearing 9, a bottom supporting sheet 10, a flat washer B11 and a thick hexagon nut 12, the outer part of the thick hexagonal nut 12 is sleeved with a bottom cover 13, and the upper end of the conical head inner tube 2 is fixedly provided with an end plug 1.

Further, the conical head inner pipe 2 is connected with the built-in nut 8 through spin riveting or welding.

Further, the built-in nut 8 is connected with the screw rod 6 through threads.

Further, the screw 6 is connected with a thick hexagonal nut 12 through threads.

Further, the end plug 1 and the conical head inner tube 2 are connected in an interference press-in mode.

Furthermore, the external part of the convex rib sleeve 3 is provided with a convex rib which is buckled with a tooth groove arranged on the inner hole of the guide sleeve 4. And are slidable relative to each other.

The working principle is as follows:

the utility model discloses an installation step as follows:

(001) firstly, mounting a bottom support sheet 10 on the inner bottom surface of an outer vertical pipe 7 and riveting or welding the bottom support sheet and the outer vertical pipe into a whole;

(002) pressing the guide sleeve 4 into an inner hole at the upper end of the outer vertical pipe 7 by interference fit for fixed connection, wherein the inner hole of the guide sleeve 4 is provided with tooth grooves, the number of the tooth grooves is the same as the number of the ribs of the rib sleeve 3, and the tooth grooves are in clearance fit and can slide mutually;

(003) screwing the built-in nut 8 into the screw 6, riveting a flat washer A5 at the top end of the screw 6 for limiting the stroke of the built-in nut 8, and then screwing and fixing the built-in nut 8 in the lower end of the conical head inner pipe 2, wherein a screw conical head inner pipe assembly body is formed by the flat washer A5, the screw 6, the built-in nut 8, the conical head inner pipe 2 and the end plug 1;

(004) fixedly connecting the bead sleeve 3 to the outer surface of the conical head inner tube 2 in an interference fit manner, wherein the lower end surface of the bead sleeve is flush with the lower end surface of the conical head inner tube 2;

(005) sleeving the flat bearing 9 on the small screw rod part at the lower end of the screw rod 6, then inserting the ribbed sleeve 3 into the guide sleeve 4 until the small screw rod part at the lower end of the screw rod 6 penetrates through the central hole of the bottom support sheet 10 and presses the flat bearing 9, then sleeving the flat washer B11, and screwing the thick hexagon nut 12 to finish the assembly and fixation of the product;

(006) then the nut and the head of the screw of the small screw part at the lower end of the screw 6 are welded and fixed from the bottom end face of the thick hexagonal nut 12;

(007) and finally, covering the bottom cover 13 with the hexagonal hole on the thick hexagonal nut 12 in a sleeving manner, wherein the hexagonal hole of the bottom cover 13 is provided with a small convex edge which can be buckled on a small groove in the middle of the thick hexagonal nut 12, so that the bottom cover 13 is ensured not to fall off, and the whole product is declared to be finished.

When the chair is used, only the bottom cover 13 needs to be rotated, the screw rod 6 can be rotated through the thick hexagonal nut 12, the built-in nut 8 is lifted or lowered by the rotation of the screw rod 6, the built-in nut 8 drives the conical head inner tube 2 to lift or lower, the lifting or lowering of the chair is realized, the convex edge sleeve 3 slides and lifts in the guide sleeve 4 along with the lifting of the conical head inner tube 2, but the convex edge on the convex edge sleeve 3 is buckled with the tooth groove on the inner hole of the guide sleeve 4, so that the convex edge sleeve 4 cannot rotate, the chair can only lift but cannot rotate in adjustment and use, and the chair completely meets the expectation of people at present. The screw 6 is axially fixed and immovable, but can rotate; the built-in nut 8 is fixed in the lower end of the conical head inner pipe 2, cannot rotate, but can move axially, and then the conical head inner pipe 2 can be driven to lift together.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a screw rod lift rotation stopping rod, includes end cap (1), conical head inner tube (2), bead sleeve pipe (3), uide bushing (4), plain washer A (5), screw rod (6), outer riser (7), built-in nut (8), flat bearing (9), end backing sheet (10), plain washer B (11), thick hexagon nut (12), bottom (13), its characterized in that, conical head inner tube (2) lower extreme is fixed and is provided with built-in nut (8), the inside of built-in nut (8) is provided with screw rod (6), flat washer A (5) is connected through the riveting in screw rod (6) upper end, bead sleeve pipe (3) are established to the outside cover of conical head inner tube (2), uide bushing (4) are established to the outside cover of bead sleeve pipe (3), outer riser (7) are established to uide bushing (4) outside cover, the lower extreme of screw rod (6) is established flat bearing (9) in proper order and is established, The novel taper head structure comprises a bottom support sheet (10), a flat washer B (11) and a thick hexagon nut (12), wherein a bottom cover (13) is sleeved outside the thick hexagon nut (12), and an end plug (1) is fixedly arranged at the upper end of a taper head inner tube (2).

2. The screw lifting rotation-stopping rod as claimed in claim 1, wherein the conical head inner tube (2) is connected with the built-in nut (8) by spin riveting or welding.

3. Screw lifting rotation stop lever according to claim 1, characterized in that the built-in nut (8) is in threaded connection with the screw (6).

4. Screw lifting rotation stop lever according to claim 1, characterized in that the screw (6) is in threaded connection with a thick hexagonal nut (12).

5. The screw lifting rotation-stopping rod as claimed in claim 1, wherein the end plug (1) is connected with the conical head inner tube (2) by interference press-fitting.

6. The screw lifting rotation-stopping rod as claimed in claim 1, wherein the external part of the ribbed sleeve (3) is provided with a rib which is buckled with a tooth groove arranged on the inner hole of the guide sleeve (4).

Images