CN208405143U - The hub structure of wheelchair - Google Patents

Abstract

A kind of hub structure of wheelchair, mainly in the hollow inside of the main body of flower-drum and neighbouring clutch collar pipe end, it is to have a limitation ring by inner wall projection, the body interior of the one end is embedded in for one end of the casing and abuts against, the body interior of the other end constitutes a configured slot, in the notch of the configured slot and at the positioning of a neighbouring first bearing, it is provided with an internal tooth surface.After being sequentially placed in a second bearing, a spacer tube and the first bearing in the configured slot, be spirally connected with a packing screw piece with the internal tooth surface, when screwing the packing screw piece, the packing screw piece can pushing tow first bearing, spacer tube and second bearing and limitation ring be adjacent to positioning.By the equal setting, have bearing group cube just, saving of labor and accurate positioning, stable effect.

Description

The hub structure of wheelchair

[technical field]

The utility model is the hub structure about a kind of wheelchair, espespecially a kind of bearing that can make to be located in the flower-drum, tool There is easy to assembly and accurate positioning, bearing will not be made to have assembling clearance, causes the flower-drum knot of the wheelchairs of missings such as skewed, abrasion Structure.

[background technique]

The structure of known wheelchair 1, as shown in Figure 1, 2, in the rear end of chair frame 10 be provided with one horizontally axis hole 11 (as scheme 5) it, penetrates and fixes for being located at the sleeve 20 of 2 side of a flower-drum again in the axis hole 11.The main body 21 of the flower-drum 2 is to expose to The outside of the chair frame 10 connects a rear-wheel wheel rim 3 with spoke 30.Wherein, the mounting structure of the known flower-drum 2 and its bearing, such as It is to include shown in Fig. 3-5:

The main body 21, is hollow form, and respectively there is a baffle ring at the both ends inside the main body 21 by the inside projection of inner wall, is First baffle ring 210 and the second baffle ring 211, it is each to constitute between two baffle ring 210,211 and the two-port of the corresponding main body 21 One first assembly space 212 and one second assembly space 213.

One first bearing 22 and a second bearing 23 are embedded in by the both ends of the main body 21 respectively, keep the first bearing 22 solid It is scheduled in first assembly space 212, and the second bearing 23 is fixed in second assembly space 213.

One Quick Release assembly 24 (such as Fig. 3-5), the interlude of the Quick Release assembly 24 are inside the main body 21, include one Outer tube 240, a mandrel 241, a spring 242, a head 243, at least a card bead 244 and a top 245.The one of the outer tube 240 End pipe mouth is located in the main body 21, and the accommodation groove 2400 of the one expansion mouth shape of inside tool of the end pipe mouth, in the accommodation groove 2400 It is equipped with the spring 242.The outer wall that above-mentioned 2400 end of holding tank is arranged in the outer tube 240 is provided with one section of external facing 2401. The mandrel 241, is threaded through the inside of the outer tube 240, and the outer wall at both ends is respectively arranged with a facing, i.e. the first facing 2410 and Two facings 2411, wherein first facing 2410 and above-mentioned head 243 are spirally connected fixation, and the spring 242 has the pushing tow head 243 and the mandrel 241 strength (direction A of such as Fig. 5) to displacement is set toward the head 243.Above-mentioned outer tube 240 it is corresponding this second The outer wall at 2411 end of facing, at least provided with a hole of bead 2402 (can be a plurality of), so that the card bead 244 is placed in, while position In the inside of outer tube 240 at the end, it is provided with the top 245, the top 245 and second facing 2411 are spirally connected fixation, make this Top 245 and the androgynous gearing of the mandrel 241.The top 245 is extended with an outer diameter lesser one in meeting to 2402 end of the hole of bead Wall 2450 is pushed up on the outer wall of the mandrel 241, and the top wall 2450 is aligned with the hole of bead 2402.The top wall 2450 with the card bead 244 change above and below when connecing (as shown in Figure 5), outside the prominent hole of bead 2402 in the part pearl face of the card bead 244；When not connecing repeatedly, the card bead 244 be to submerge in the hole of bead 2402 (as shown in Figure 6).

One first nut 25 is set in the first assembly space 212 and is spirally connected with the first facing 2410 of the outer tube 240, It is spirally connected when rotating to bottom, 22 packing of first bearing is positioned between first nut 25 and first baffle ring 210.

Described sleeve pipe 20 is threaded through in axis hole 11 set by 10 rear end of chair frame, and inside is for the Quick Release assembly 24 One end pass through.One end of the casing 20 has an enlarged footing 201, and the outer diameter of the enlarged footing 201 is big compared with the aperture of the axis hole 11, makes The enlarged footing 201 is constrained to lie in outside the axis hole 11.The port of the enlarged footing 201 is embedded in second pilot hole 213, by this The side wall of two bearings 23 is withstood.The casing 20 is located at another opposite end of the enlarged footing 201, is pierced by outside axis hole 11, in pipe outer wall It is provided with sleeve facing 202, and the port 203 of the casing is less than in range corresponding to the hole of bead 2402 (such as Fig. 5 institute Show), it is positioning states, which contacts with the port 203.

One second nut 26 is spirally connected with the casing facing 202, is detached from axis hole 11 to limit the casing 20.

After sequentially combining above-mentioned component, i.e., as shown in Figure 5.Wherein the Quick Release assembly 24 such as same central axis with chair Frame 10 is pivotally connected.When rear-wheel wheel rim 3 is separated chair frame 10, as shown in fig. 6, force pushes away on head 243 in main body 21, mandrel 241 just with displacement, so that the top wall 2450 of top 245 is pulled back from card bead 244, which just takes advantage of a situation displacement and mandrel 241 Contact, the pearl face of card bead 244 does not contact not in the hole of bead 2402 with the port 203 of casing 20, at this point, the Quick Release assembly 24 is Chair frame 10 can be detached by 243 end of head outward.

The first bearing 22 of above-mentioned known flower-drum 2 be with 25 packing of the first nut, and be fixed on first baffle ring 210 with should Between first nut 25, the stability of positioning is without anxiety.It only, is by the enlarged footing of casing 20 when which is positioned 201 with the second baffle ring 211 is clamping forms, whether have clearance between the enlarged footing 201 and second bearing 23, pushed up entirely by the card bead 244 It pushes away 203 strength of port of the casing 20 and controls, if group timing " feeling " has clearance, first extract whole branch Quick Release assembly 24 out, then After tuning 25 1 thin tail sheep of the first nut distance, it is reloaded into main body 21 and casing 20, tries that the card bead 244 blocks port 203 When, whether which just resists second bearing 23, is allowed to no clearance and generates.The fixed form of the second bearing 23 The adjustment that the Quick Release assembly 24 must be cooperated, it is upper with following missing presence in application, for This is what people generally disapprove of.

1. improving the combination clearance of bearing with feel, not only group is vertical inconvenient but also may need repeatedly to adjust, and causes to consume Work.

2. the casing 20 when tuning packing, can be drawn toward the opposite direction for withstanding second bearing 23, be made by second nut 26 Originally having adjusted does not have clearance, and generates clearance.

3. second nut 26 because of above-mentioned factor, often has positioning clearance to generate, so that it is skewed to will cause the second bearing 23 Caused abrasion (reducing the service life), ball exposed the phenomenon that may blocking outer tube 240 (i.e. wheel shaft) and wheel is arranged to hold The easily missing such as shaking.

[utility model content]

The purpose of this utility model be provide a kind of bearing group true up really, saving of labor and the wheelchair for promoting axis axis durability Hub structure.

In order to achieve the above object, a kind of hub structure of wheelchair of the utility model, which is characterized in that include:

One main body is hollow tubular, has a limitation ring in inner wall projection, which is hollow form, is with the limitation ring The body interior on boundary, one end have an embedded groove, and the other end has a configured slot；One pre-position of inside cell wall of the configured slot It is provided with an internal tooth surface；

One second bearing, a spacer tube and a first bearing, are sequentially placed in the configured slot, wherein the one of the second bearing Side wall is abutted against with the limitation ring；The spacer tube, both ends are abutted against with first and second bearing respectively；This of above-mentioned internal tooth surface setting is pre- Positioning is set, that is, is located at the adjacent side at the first bearing setting, which is the notch end of the neighbouring configured slot；And

One packing screw piece is hollow form, and periphery mask thread is protruded into the configured slot and is spirally connected with the internal tooth surface, the packing When screw piece screws, the packing screw piece can the pushing tow first bearing, the spacer tube and the second bearing and the limitation ring be sequentially adjacent to Positioning.

In the hub structure of above-mentioned wheelchair, which is embedded in for one end of sleeve, and the interlude of the casing is worn In an axis hole, which is located in a chair frame of the wheelchair；The both ends of the casing are pierced by respectively outside the axis hole.

In the hub structure of above-mentioned wheelchair, the axle center of the flower-drum, after being passed through by one end of a Quick Release assembly, the Quick Release is total At should be penetrated again in the casing across end, positioning is blocked with the card bead that is configured of inside and the casing；The casing is located at non- Pipe outer wall towards the bulk end, then it is solid with the pipe outer wall spiral shell of a support screw cap and the casing, which is fixed on chair frame Side.

In the hub structure of above-mentioned wheelchair, which is that the middle vacancy of the packing screw piece is embedded in by a tool, with It protrudes into the configured slot, drives the packing screw piece to be spirally connected with the internal tooth surface by turning tool.

The utility model has the beneficial effects that: easy to assembly and accurate positioning, will not make bearing have assembling clearance, cause The missings such as skewed, abrasion.

[Detailed description of the invention]

It is the perspective view of known wheelchair shown in Fig. 1.

It is the front view of known wheelchair shown in Fig. 2.

It is the stereogram exploded view of known flower-drum shown in Fig. 3.

It is the plan cross-section exploded view of known flower-drum shown in Fig. 4.

It is the assembled sectional view of known wind drum shown in Fig. 5.

It is that the Quick Release assembly that known wind rouses makees cardon shown in Fig. 6.

It is the stereogram exploded view of the utility model embodiment flower-drum shown in Fig. 7.

It is the plan cross-section exploded view of the utility model embodiment flower-drum shown in Fig. 8.

It is the flower-drum assembled sectional view of the utility model embodiment shown in Fig. 9.

Figure label is described as follows:

1 chair frame of wheelchair, 10 axis hole, 11 flower-drum 2

20 main body of casing, 21 spoke, 30 rear-wheel wheel rim 3

First baffle ring, 210 second baffle ring, 211 first assembly space, 212 second assembly space 213

22 second bearing of first bearing, 23 Quick Release assembly, 24 outer tube 240

241 spring of mandrel, 242 head, 243 card bead 244

Come directly towards 245 accommodation groove, 2400 external facing, 2,401 first facing 2410

Push up 2,450 first nut 25 of wall in second facing, 2411 hole of bead 2402

201 casing facing of enlarged footing, 202 port, 203 second nut 26

4 main body of flower-drum, 40 first bearing, 41 second bearing 42

43 packing screw piece of spacer tube, 44 inner wall, 400 casing 5

401 embedded groove of limitation ring, 402 configured slot, 403 internal tooth surface 404

6 axis hole of chair frame, 60 Quick Release assembly, 7 card bead 70

Support screw cap 50

[specific embodiment]

It please refers to shown in Fig. 7~9, the flower-drum 4 of the utility model embodiment, includes a main body 40, a first bearing 41, one Second bearing 42, a spacer tube 43 and a packing screw piece 44.Wherein, the main body 40 is hollow tubular, in inner wall 400 and neighbouring 5 end of sleeve is engaged, there is the limitation ring 401 of a circle hollow form by 400 projection of inner wall.Master positioned at 401 one end of limitation ring Have an embedded groove 402 inside body 40, for abutting against after one end insertion of the casing 5 with 401 side wall of limitation ring, is located at the limitation Inside the main body 40 of 401 other end of ring, a configured slot 403 is constituted.In the slot of the configured slot 403 and adjacent to above-mentioned first bearing At 41 positioning, it is provided with an internal tooth surface 404.That is, the position of the internal tooth surface 404 setting, it is located at 41 setting of first bearing Adjacent side, which is the notch end of the neighbouring configured slot 403.

Described sleeve pipe 5 is as known, and interlude is set in an axis hole 60 of a chair frame 6 (as shown in Figure 9), and both ends are pierced by Outside axis hole 60.

Two bearing 42, the spacer tube 43 and the first bearing 41, are sequentially placed in the configured slot 403, the second bearing 42 side wall is abutted against with limitation ring 401.The spacer tube 43 between first, second bearing 41,42, distinguish by the nozzle at both ends It is abutted against with the opposite side wall of the first, second bearing 41,42.

The packing screw piece 44, is hollow form, and periphery mask thread can be embedded in the packing spiral shell by tool (such as screwdriver) The middle vacancy of part 44 drives the packing screw piece 44 to be spirally connected with internal tooth surface 404, makes this to protrude into configured slot 403 by turning tool When packing screw piece 44 screws, which can pushing tow first bearing 41, spacer tube 43 and second bearing 42 and limitation ring 401 Sequentially it is adjacent to positioning.

When the vertical flower-drum 4 of group, by the second bearing 42, the spacer tube 43 and the first bearing 41, it is sequentially placed in the configured slot It in 403, is spirally connected later with packing screw piece 44 and internal tooth surface 404 and packing, i.e., is fixed on first bearing 41 and second bearing 42 In main body 40, there is easy to assembly, saving of labor and accurate effect.

When the flower-drum 4 is installed in chair frame 6, first casing 5 is set in the axis hole 60, later by a Quick Release assembly 7 One end pass through main body 40, after casing 5, the card bead 70 that the port of the casing 5 is configured by the Quick Release assembly 7 positions (such as Fig. 9 institute Show, which repeats no more as known), then it is solid with the pipe outer wall spiral shell of a support screw cap 50 and the casing 5, it can will The flower-drum 4 is fixed on the side of chair frame 6, as shown in Figure 9.

By above-mentioned explanation it is found that the utility model embodiment second bearing 42, first bearing 41 are assembled, positioned, with Quick Release assembly 7 is unrelated, group timing not only saving of labor, time saving, but also accurate positioning, firm, and more conventional group mode has progressive, And also more conventional person is long for service life.

Claims (4)

1. a kind of hub structure of wheelchair, which is characterized in that include:

One main body is hollow tubular, has a limitation ring in inner wall projection, which is hollow form, using the limitation ring as boundary The body interior, one end have an embedded groove, and the other end has a configured slot；One pre-position of inside cell wall of the configured slot is arranged There is an internal tooth surface；

One second bearing, a spacer tube and a first bearing, are sequentially placed in the configured slot, wherein the one side wall of the second bearing It is abutted against with the limitation ring；The spacer tube, both ends are abutted against with first and second bearing respectively；The pre-determined bit of above-mentioned internal tooth surface setting It sets, that is, is located at the adjacent side at the first bearing setting, which is the notch end of the neighbouring configured slot；And

One packing screw piece is hollow form, and periphery mask thread is protruded into the configured slot and is spirally connected with the internal tooth surface, the packing screw piece When screwing, the packing screw piece can the pushing tow first bearing, the spacer tube and the second bearing and the limitation ring be sequentially adjacent to positioning.

2. the hub structure of wheelchair according to claim 1, it is characterised in that: the embedded groove is embedding for one end of sleeve Enter, the interlude of the casing is threaded through in an axis hole, which is located in a chair frame of the wheelchair；It wears respectively at the both ends of the casing Out outside the axis hole.

3. the hub structure of wheelchair according to claim 2, it is characterised in that: the axle center of the flower-drum, by a Quick Release assembly One end pass through after, which should penetrate again in the casing across end, with the card bead that is configured of inside and the casing Block positioning；The casing is located at the pipe outer wall of the not face bulk end, then solid with the pipe outer wall spiral shell of a support screw cap and the casing, The flower-drum is fixed on to the side of chair frame.

4. the hub structure of wheelchair described in -3 any one according to claim 1, it is characterised in that: the packing screw piece be by One tool is embedded in the middle vacancy of the packing screw piece, to protrude into the configured slot, drives the packing screw piece interior with this by turning tool Facing is spirally connected.