CN206126636U - Indoor step hollow shaft - Google Patents

Abstract

The utility model discloses an indoor step hollow shaft, aim at providing a firm in connection, be convenient for the installation indoor step hollow shaft, the problem of connect to go out freshly ground easily and decrease not hard uply is solved, its technical scheme main points are including hollow shaft and fixed column, be well emptying aperture in the hollow shaft, two tip of hollow shaft have do not set up the torsional spring, the torsional spring is fixed in in the hollow shaft inner wall for spiral and one end, set up the movable groove that supplies the torsional spring other end to stretch out on the lateral wall of hollow shaft, the fixed column tip is equipped with the screw thread with torsional spring threaded connection, the precession direction of fixed column and the hand of spiral of torsional spring are unanimous.

Description

Indoor step pipe axle

Technical field

This utility model is related to indoor step pipe axle.

Background technology

Indoor step pipe axle is mainly using a component structural in ladder elevator indoors.

As the step pipe axle on ladder elevator needs timing to be safeguarded, accumulation dust is checked whether, if abrasion, even Whether binding structure is firm.And existing step pipe axle and fixed column（Or roller shaft）Between be that gap coordinates, it is and insecure, and And it is inadequate according to process tautness.When there is abrasion, assembling structure will loosen, and attachment structure is unstable.

The Chinese patent of Application No. CN201520186354.X discloses shaft-assembling structure before a kind of outdoor step, and it wraps Hollow axle and roller shaft are included, hollow axle is coordinated with roller shaft clearance, inside sets waterproof plug.This structure goes out when the hollow hole of hollow axle When existing inner wall abrasion, the roller shaft connection being plugged in hollow hole just occurs loosening, and it is unfavorable that lift facility is had Affect, therefore we need periodic maintenance to detect, go wrong, then be accomplished by entirely being changed.

Utility model content

In view of the shortcomings of the prior art, the purpose of this utility model is to provide the interior for being connected firmly, being easily installed Step pipe axle.

Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of indoor step pipe It is hollow hole in axle, including hollow axle and fixed column, hollow axle, two ends of the hollow axle are respectively provided with torsion spring, The torsion spring is that spiral type and one end are fixed in inner wall of hollow shaft, offers and stretch out for the torsion spring other end on the side wall of hollow axle Loose slot, the fixed column end is provided with the screw thread being threadedly coupled with torsion spring, the precession direction of fixed column and the spiral of torsion spring Direction is consistent.

By above-mentioned setting, as hollow axle has hollow-core construction, weight can be effectively reduced, reduce production cost, be The stability of attachment structure is improved, this programme employs and torsion spring is arranged in hollow hole, and the respective outer side edges fixed column of torsion spring Screw thread, in use, torsion spring is connected in the groove on screw thread, and when fixed column rotates, free end is due to rubbing Wipe left and right and the hand of spiral of power so that torsion spring bore opens, the centre into torsion spring is rotated in order to fixed column, but if Fixed column is rotated toward opposite direction, due to the hand of spiral contrary with torsion spring, now due to the left and right of frictional force, torsion spring from Held tightly on the groove of screw thread by end, as the groove on the contact surface and screw thread of this torsion spring is contacted, now fixed column is difficult past Opposite direction rotates, so as to prevent fixed column from coming off.When needing to be dismantled, then it is by stirring the torsion on loose slot The spring other end is opened come the opening for entering to be about to torsion spring, such that it is able to fixed column is reversely rotated out.Structure is thus connected, just can be with Hollow axle directly contact fixed column is instead of, the abrasion of inwall is caused to hollow axle.

Can be preferably as concrete scheme of the present utility model：One end of the torsion spring be fixing end, torsion spring it is another Hold as free end, loose slot is long waist shaped, fixing end is annular, and free end is strip.

By above-mentioned setting, fixing end is set to annular, is easy to be fixed on the inwall of hollow axle.Free end strip can Stir in order to finger, to open the opening of torsion spring.

Can be preferably as concrete scheme of the present utility model：The interlude coiled coil diameter of the torsion spring is by contracting greatly It is little.

By above-mentioned setting, as the interlude bore of torsion spring is gradually reduced, it is possible thereby to post is further fastened and fixed, and And if fixed column is slightly worn and torn after, can still be fastened.

Can be preferably as concrete scheme of the present utility model：Diaphragm seal is provided with the hollow hole, diaphragm seal sets It is disposed adjacent to the position fixed ends of torsion spring.

By above-mentioned setting, diaphragm seal can effectively keep the inner sealing of hollow hole.Diaphragm seal plays dustproof and waterproof Effect.

Can be preferably as concrete scheme of the present utility model：The end of the hollow axle is provided with rubber blanket, described Rubber blanket is set to truncated cone-shaped, and rubber blanket center is coaxial with fixed column and inwall is contradicted with fixed column outer wall.

By above-mentioned setting, rubber blanket can play the effect of sealing, also improve the fastening of connection to the end of hollow axle Degree, prevents the abrasion of end.

Can be preferably as concrete scheme of the present utility model：The hollow axle end is provided with what is matched with rubber blanket Round platform groove.

By above-mentioned setting, the setting of round platform groove, can install in order to rubber blanket and coordinate, play increase contact surface and fastening The effect of degree.

In sum, this utility model has the advantages that：

1st, the firmness of product connection is improved, slows down abrasion replacement frequency, so as to reduces cost；

2nd, structure connection disassembling is easy for installation, improves packaging efficiency.

Description of the drawings

Structural representations of the Fig. 1 for the present embodiment；

Configuration schematic diagrams of the Fig. 2 for the present embodiment；

Sectional views of the Fig. 3 for the present embodiment.

1, hollow axle in figure；2nd, fixed column；3rd, hollow hole；4th, torsion spring；41st, fixing end；42nd, free end；43rd, interlude； 5th, loose slot；6th, screw thread；7th, diaphragm seal；8th, rubber blanket；9th, round platform groove.

Specific embodiment

This utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment：As shown in figure 1, a kind of indoor step pipe axle, including hollow axle 1 and fixed column 2, in hollow axle 1 it is Hollow hole 3.As shown in Fig. 2 two ends of hollow axle 1 are respectively provided with torsion spring 4, one end of torsion spring 4 is fixing end 41, torsion spring 4 other end is free end 42, and the 43 coiled coil diameter of interlude of torsion spring 4 is by reducing greatly.Loose slot 5 is long waist shaped, fixed End 41 is annular, and free end 42 is strip.Torsion spring 4 is that spiral type and one end are fixed in 1 inwall of hollow axle, hollow axle 1 The loose slot 5 stretched out for 4 other end of torsion spring is offered on the wall of side, 2 end of fixed column is provided with the screw thread being connected with 4 screw thread 6 of torsion spring 6, the precession direction of fixed column 2 is consistent with the hand of spiral of torsion spring 4.The fixing end 41 of torsion spring 4 has certain deformability, institute Being distorted, reducer annular bore, such that it is able to slip in hollow hole 3, is provided with for solid on 3 inwall of hollow hole Determine the draw-in groove of 4 fixing end 41 of clamping torsion spring, such that it is able to torsion spring 4 is connected in hollow axle 1.Another processing mode, then It is that semicircle hollow axle 1 is covered welding to be produced, hollow axle 1 is split as into two halves, so as to install after torsion spring 4, by which Upper and lower pressing and forming.

As shown in figure 3, diaphragm seal 7 is provided with hollow hole 3, diaphragm seal 7 is disposed in proximity to the fixing end 41 of torsion spring 4 Put.The installation fixed form of diaphragm seal 7 can adopt glue sealing, diaphragm seal 7 then, based on elastomeric material, can also equally use Metal material.The end of hollow axle 1 is provided with rubber blanket 8, and rubber blanket 8 is set to truncated cone-shaped, 8 center of rubber blanket and fixed column 2 Coaxial and inwall is contradicted with 2 outer wall of fixed column.1 end of hollow axle is provided with the round platform groove 9 matched with rubber blanket 8.

Using process：In assembling process, it is inserted in fixed column 2 in hollow hole 3, screw thread 6 is initially entered in torsion spring 4, By rotating fixed column 2, now, as shown in Fig. 2 fixed column 2 is rotated clockwise, the free end 42 of torsion spring 4 is due to frictional force Effect is also driven clockwise, so as to the opening of torsion spring 4 is opened, allows then fixed column 2 and 4 screw thread 6 of torsion spring to coordinate, but if solid Back-out counterclockwise is wanted after 2 precession of fixed column, now 6 post of screw thread revolves drive free end 42 counterclockwise and also fastens counterclockwise, thus The opening of torsion spring 4 is just reduced, and plays a part of fastening.The free end 42 of torsion spring 4 is stirred manually, so as to open torsion spring 4 Opening, so as to relax to fixed column 2.This assembling mode is relatively simple, and firmly.As end is provided with rubber blanket 8, abrasion can be prevented effectively from, connection tightness is improved.

This specific embodiment is only which is not to restriction of the present utility model, ability to explanation of the present utility model Field technique personnel can make the modification for not having creative contribution after this specification is read as needed to the present embodiment, but As long as all being protected by Patent Law in right of the present utility model.

Claims (6)

1. it is hollow hole (3) in a kind of indoor step pipe axle, including hollow axle (1) and fixed column (2), hollow axle (1), which is special Levy and be：Two ends of the hollow axle (1) are respectively provided with torsion spring (4), and the torsion spring (4) is that spiral type and one end are fixed In hollow axle (1) inwall, the loose slot (5) stretched out for torsion spring (4) other end on the side wall of hollow axle (1), is offered, it is described Fixed column (2) end is provided with the screw thread (6) being connected with torsion spring (4) screw thread (6), the precession direction of fixed column (2) and torsion spring (4) The hand of spiral is consistent.

2. indoor step pipe axle according to claim 1, it is characterised in that：One end of the torsion spring (4) is fixing end (41), the other end of torsion spring (4) is free end (42), and loose slot (5) is long waist shaped, and fixing end (41) is annular, free end (42) it is strip.

3. indoor step pipe axle according to claim 1, it is characterised in that：Interlude (43) spiral of the torsion spring (4) Coil diameter is by reducing greatly.

4. indoor step pipe axle according to claim 1, it is characterised in that：Diaphragm seal is provided with the hollow hole (3) (7), diaphragm seal (7) is disposed in proximity to fixing end (41) position of torsion spring (4).

5. indoor step pipe axle according to claim 1, it is characterised in that：The end of the hollow axle (1) is provided with rubber Rubber cushion (8), the rubber blanket (8) are set to truncated cone-shaped, and rubber blanket (8) center is coaxial with fixed column (2) and inwall and fixed column (2) outer wall is contradicted.

6. indoor step pipe axle according to claim 5, it is characterised in that：Hollow axle (1) end is provided with and rubber The round platform groove (9) that rubber cushion (8) is matched.