CN203246267U

CN203246267U - Center control wheel set

Info

Publication number: CN203246267U
Application number: CN 201320193091
Authority: CN
Inventors: 杨丰禧
Original assignee: Sunny Castors Co Ltd
Current assignee: Sunny Castors Co Ltd
Priority date: 2013-04-17
Filing date: 2013-04-17
Publication date: 2013-10-23
Anticipated expiration: 2023-04-17

Abstract

The utility model relates to a center control wheel set. The center control wheel set comprises a wheel seat set, a direction set, a stopping set and a braking set, wherein the wheel seat set serves as the main shell body of a vehicle wheel and is used for assembling the direction set and the stopping set, the direction set at least comprises a toothed plate, clamping teeth meshed with annular teeth on a fixed reversing block are arranged on the toothed plate, a clamping groove is formed in the bottom of the fixed reversing block in a concave mode, the bottom of the fixed reversing block is located in an accommodating groove of the braking set, the braking set is provided with at least one brake block, the top surface of the brake block is concave downwards to form the accommodating groove, the brake block can move vertically under the control of the braking set, at least three sections of control is arranged on the moving path of the brake block, one of the sections of control enables the vehicle wheel to turn fixedly by 180 degrees and to move linearly, one of the sections of the control enables the vehicle wheel to move and rotate freely, and the last section of control can achieve braking and fixed turning of the vehicle wheel at the same time so that the vehicle wheel can not move or rotate.

Description

Middle control wheels

Technical field

The relevant a kind of middle control wheels of the utility model are one can be suitable for being combined in the medical facilities such as baby chair, sick bed or wheelchair, or the wheel of thing frame, cupboard substrate, and espespecially one has brake and the car wheel structure that fixedly turns to.

Background technology

In the existing car wheel structure, manyly have brake, fixedly the function such as turn to, and its majority utilizes the engagement of tooth to reach its effect, in the existing technology, as " the Castor structure improvement " of commonly using is such as Chinese T W patent application case number No. 100204112, a kind of Castor structure improvement includes: a wheel carrier group; One brake group; One rotating group; One pivot joint group; Its improvement is: the wheel seat of a wheel carrier group, the combination bore that this wheel seat one side upper end is offered, be formed with a fixing steering block in its combination bore, and fixedly steering block can with the upper fluted disc tabling of brake group, and fixedly the steering block end face is provided with some locking holes, again in this fixedly in the middle of the steering block bottom surface place form from bottom to top one and fixedly turn to groove, this fixedly turn to groove can with the projection tabling of the upper fluted disc of brake group; The brake shoes of one brake group, this brake shoes inside opening end is formed with a lower tooth disk, its lower tooth disk can with the interlock of upper fluted disc phase, and fluted disc end face formation one is the projection of square on this, and the wheel seat that should the brake group be arranged on the wheel carrier group is inner so that the projection of upper fluted disc can be entrenched in fixing steering block fixedly turn to groove.

" the Castor structure improvement " that it is described above, between this upper and lower fluted disc, because the mode of utilizing fluted disc meshes, so the doubt of disengaging is easily arranged between each tooth, in addition, if between each tooth of upper and lower fluted disc in out-of-alignment situation, cause easily structure to block, so that use inconvenience, very the person causes damage.

Because above-mentioned disappearance drawback, the utility model creator thinks that it has necessity anxious to be corrected, then be engaged in the many years of experience that Related product manufactures and designs with it, and always adhere to the well-designed theory that has, for above bad place study and composition in addition, through after constantly making great efforts, be to release in the utility model creation to control wheels eventually, it is to correct the effect of good product structure improving product.

The utility model content

The purpose of this utility model is to provide a kind of middle control wheels, it is simple in structure, easy to operate, its car wheel structure can have fixedly the effect that turns to, brakes, and improve simultaneously the gear that this conduct fixedly turns to purposes, make the structure of its engagement tightr, and be difficult for that the doubt that breaks away from or block is arranged, reach better utilization benefit.

For reaching aforementioned purpose, the utility model discloses a kind of middle control wheels, it comprises at least:

One wheel seat group, formed by shell block, shell and wheel, has a shell neck at this shell block, side at the shell neck is extended with body section, be provided with the shell support corresponding to shell neck and body subordinate Fang Ze, casing places shell block top, set of wheels to be contained on the shell support corresponding to body subordinate side, and corresponding shell support below the shell neck is assembled with the brake group in addition;

The brake group is comprised of brake shoes and brake lining, and this brake shoes is assembled on the shell support of shell neck below, respectively is formed with a brake lining that is close to the felloe place at the wherein two side faces of brake shoes; It is characterized in that:

The shell support of this wheel seat group correspondence below the shell neck is assembled with a direction group;

The direction group is by tooth plate, returning spring, latch, fixing steering block, the ring tooth, engagement groove forms with perforation, this tooth plate is placed on the shell support of shell neck below, the end of tooth plate is hubbed on the both sides of shell neck below shell support, respectively be provided with a returning spring near this tooth plate and the place of being articulated, shell support both sides, this returning spring lower end is resisted against on the tooth plate, the upper end then is resisted against body subordinate side, and be provided with some fixedly latches of the ring tooth of steering block that can be engaged at the middle section of this tooth plate convex, described fixedly steering block is positioned at shell neck below, fixedly be equipped with the ring tooth around the outer wall of steering block at this, fixedly the bottom of steering block then is concaved with engagement groove, and fixedly the steering block center is penetrated with perforation again;

The brake shoes end face of this brake group is resisted against the bottom of tooth plate, and the brake shoes end face then is concaved with a tank downwards, this convex clamping block that is provided with in tank bottom, and the fixedly steering block of direction group then is placed in this tank and this clamping block can engage mutually with engagement groove.

Wherein, the shell rack inner wall of this wheel seat group is provided with a shell caulking groove and a shell projection corresponding with the shell caulking groove, convex is provided with an abaculus that can be embedded in the shell caulking groove on a wherein lateral surface of the brake shoes of brake group, thereby is concaved with then that this shell projection can set that in the inner groove makes this brake shoes be beneficial to being assembled in shell neck below and in wherein moving up and down corresponding to the another side place of abaculus.

Wherein, place, the bottom surface of the body section both sides of this wheel seat group respectively is concaved with recess, and the returning spring upper end of direction group is resisted against in the recess.

Wherein, the body section end of this wheel seat group is concaved with a groove, and the end of shell is extended with the hook portion of a fastener on groove.

Wherein, the tooth plate of this direction group is a ㄇ shape metal plate.

Wherein, be provided with a Compress Spring in the tank of this brake group, this Compress Spring stays on tank and fixedly between the steering block bottom.

Wherein, the convex jacking block that can be resisted against tooth plate bottom that is provided with of a side on the end face of the brake shoes of this brake group.

Wherein, this braking group includes interior axle, clipping block, retarding spring, outer shaft, slipper, brake hole, encasement and outer cover, should sequentially pass outer shaft by shell neck top by interior axle, the shell neck, perforation and brake shoes also are locked in the brake shoes bottom, should convex with clipping block in interior axle top, thereby and this retarding spring from bottom to top be placed through on the interior axle order should in axle when being placed through in the outer shaft retarding spring can be resisted against that outer shaft then can pass the shell neck and make the bottom place perforation in the outer shaft, be provided with slipper at this clipping block, described slipper below is formed with the clip hole that several embed for clipping block along outer rim, above slipper, then be formed with a position-limited trough with predetermined length, and in slipper, offer a brake hole, and at least two symmetrical encasement, this encasement coats outer shaft top and slipper, and between the encasement and clamping have one can the limiting stopper of position among position-limited trough, the outer cover cover cap is outside in encasement, in this brake hole, place one can order about after rotating slipper drive in the brake rod that moves up and down of axle.

Wherein, the outer shaft of braking group bottom is provided with binding face, when the perforation inwall of this direction group is formed with outer shaft and engages with the perforation in addition and plane of this binding face applying.

The interior axle of wherein, braking group and outer shaft are round bar shape.

Pass through said structure, middle control wheels of the present utility model, see through the control of a braking group, can make brake shoes do upper and lower displacement, and can be provided with at displacement path at least three sections control, wherein one section control makes brake shoes upwards, tooth plate upwards can be pushed up, make latch break away from the ring tooth, and engagement groove can engage mutually with clamping block, allow wheel only can make the straight line moving that 180 degree fixedly turn to, wherein the control of another section makes brake shoes slightly descend, this will upwards push up by tooth plate, engagement groove then breaks away from clamping block, but allow wheel walking freely and rotation, final stage then makes this brake shoes descend, can be attached on the wheel and brake, and make latch encircle the tooth engagement with this, have brake and the function that fixedly turns to concurrently to reach, so that wheel can't walk and rotate, yet, when latch meshes with the ring tooth, elastic force by returning spring causes latch to be able to closely mesh with encircling tooth, and, if latch is failed to aim at and can't be meshed with the ring tooth, the elastic force of returning spring also provides a buffer action, therefore, can be so that the engagement between latch and the ring tooth to be more smooth and easy, this is compared to known techniques " two brake group of pulling ", engagement between this fixed teeth and the locking shell fragment causes structure to block easily, so that use the drawbacks such as inconvenience, the utility model can effectively improve this drawback in fact, to reach better practical school benefit.

Description of drawings

Fig. 1: the overall package schematic perspective view of control wheels in the utility model creation;

Fig. 2: the wheel seat group of control wheels, direction group and brake group assembling schematic perspective view in the utility model creation;

Fig. 3: the whole schematic perspective view of control wheels in the utility model creation;

Fig. 4: but in the utility model creation control wheels for walking freely and rotate not the fixedly generalized section of steering state;

Fig. 5: but in the utility model creation control wheels for walking freely and rotate not fixedly another generalized section of steering state;

Fig. 6: the control wheels be rotatable and are the fixing generalized section of steering state in the utility model creation;

Fig. 7: the control wheels be rotatable and are fixing another generalized section of steering state in the utility model creation;

Fig. 8: the control wheels are the generalized section that braking state fixedly turns to simultaneously in the utility model creation.

The specific embodiment

The relevant a kind of middle control wheels of the utility model, it includes [seeing also Fig. 1]:

One wheel seat group 1, mainly by shell block 11, shell 12 forms with wheel 13, this shell block 11 is the main body of wheel seat group 1, has a shell neck 111 at this shell block 11, shell neck 111 is used for assembling braking group 4, side at shell neck 111 then is extended with body section 112, this body section 112 is a circular arc plate body, end in body section 112 is concaved with a groove 113, [seeing also Fig. 2] again the place, bottom surface of body section 112 both sides respectively is concaved with recess 114, then be provided with shell support 115 corresponding to shell neck 111 and body section 112 belows, and the position then is provided with a shell caulking groove 116 and a shell projection 117 corresponding with shell caulking groove 116 on shell support 115 inwalls below the shell neck 111, continue and be provided with a shell 12 and can be placed on shell block 11 tops, the end of this shell 12 is extended with a hook portion 121, this hook portion 121 and fastener are on groove 113, wheel 13 then is assembled on the shell support 115 corresponding to body section 112 belows, in addition corresponding direction group 2 and the brake group 3 of then being assembled with on the shell support 115 below the shell neck 111;

One direction group 2, mainly by tooth plate 21, returning spring 22, latch 23, fixedly steering block 24,

ring tooth

25,27 compositions of engagement groove 26 and perforation, this tooth plate 21 is a ㄇ shape metal plate, make this tooth plate 21 be placed on the shell support 115 by shell neck 111 belows, and so that two ends of tooth plate 21 can be hubbed on the both sides of shell support 115, continue and respectively be provided with a returning spring 22 near this tooth plate 21 with the place of being articulated, shell support 115 both sides, these returning spring 22 lower ends are resisted against on the tooth plate 21, the upper end then is resisted against in the recess 114, and be provided with some latches 23 at the middle section of this tooth plate 21 convex, 23 of this latches are engageable on the ring tooth 25 of fixing steering block 24, described fixedly steering block 24 is positioned at shell neck 111 belows and is placed in the tank 32 of brake group 3, fixedly be equipped with tooth 25 around the outer wall of steering block 24 at this, fixedly the bottom of steering block 24 then be concaved with engagement groove 26 can with tank 32 in clamping block 33 mutually engage, fixedly steering block 24 centers are penetrated with perforation 27 again, and 27 inwalls of boring a hole are formed with plane 271, can be beneficial to the outer shaft 44 of braking group 4 to engage;

One brake group 3, mainly by brake shoes 31, tank 32, clamping block 33, abaculus 34, groove 35 forms with brake lining 36, this brake shoes 31 is assembled on the shell support 115 of shell neck 111 belows, this is positioned at the convex jacking block 312 that is provided with of a side on the end face 311 of brake shoes 31, the center of end face 311 then is concaved with tank 32 downwards, be provided with a Compress Spring 321 in the tank 32, this Compress Spring 321 stays on tank 32 and fixedly between steering block 24 bottoms, these tank 32 bottoms and the convex clamping block 33 that is provided with, use and make fixedly steering block 24 is arranged in the tank 32, and fixedly the engagement groove 26 of steering block 24 bottoms can be sticked on the clamping block 33, continuing, convex is provided with an abaculus 34 on a wherein lateral surface of brake shoes 31, another side place corresponding to abaculus 34 then is concaved with groove 35, two side faces then respectively is formed with a brake lining 36 in addition again, this abaculus 34 can be embedded in the shell caulking groove 116 in the shell block 11,117 of shell projections in the shell block 11 can be embedded in the groove 35, make this brake shoes 31 can be assembled in shell neck 111 belows, and can be in wherein upper and lower displacement start, and this jacking block 312 also can be resisted against the bottom of

tooth plate

21, and 36 of brake linings can be close to wheel 13 peripheral places;

One braking group 4, mainly by interior axle 41, clipping block 42, retarding spring 43, outer shaft 44, slipper 45, brake hole 46, encasement 47 forms with outer cover 48, the interior axle 41 of round bar shape can sequentially be passed by shell neck 111 tops the outer shaft 44 of a round bar shape, shell neck 111, perforation 27 and brake shoes 31, and be locked in brake shoes 31 bottoms, should convex with a clipping block 42 in interior axle 41 tops, and establish again a retarding spring 43 and from bottom to top be placed through on the interior axle 41, order should in axle 41 be placed through outer shaft 44 when interior, retarding spring 43 can be resisted against in the outer shaft 44, described outer shaft 44 bottoms then have binding face 441,44 of outer shafts can pass shell neck 111 and make the bottom place perforation 27, and this binding face 441 can correspondence be fitted with the plane 271 in the perforation 27, on this clipping block 42, be provided with again slipper 45, described slipper 45 belows are formed with several clip holes 451 along outer rim, clip hole 451 can embed for clipping block 42, above slipper 45, then be formed with a position-limited trough 452 with predetermined length, and in slipper 45, offer a polygon brake hole 46, continue and be provided with at least two symmetrical encasement 47, this encasement 47 can coat outer shaft 44 tops and slipper 45 in the lump, and between the encasement 47 and clamping a limiting stopper 471 arranged, this limiting stopper 471 and can the position among position-limited trough 452, be provided with an outer cover 48 cover caps in encasement 47 outsides but continue.

The utility model is to control wheels in one, the enforcement that below cooperates its group of graphic explanation to establish, [seeing also Fig. 1 and Fig. 2] at first, the retarding spring 43 of braking group 4 from bottom to top is placed through on the interior axle 41, interior axle 41 is in from top to bottom inserting outer shaft 44, make interior axle 41 make expanding-contracting action up and down in outer shaft 44 interior cooperation retarding springs 43, shell neck 111 on the shell block 11 of wheel seat group 1 is passed in the lump to shell support 115 in continue interior axle 41 and outer shaft 44 bottoms, in addition, the tooth plate 21 of direction group 2 is placed on the shell support 115, and two ends of this tooth plate 21 are articulated mutually with shell support 115, and should also can place respectively in the recess 114 of body section 112 near returning spring 22 each end of 21 liang of ends of tooth plate, the other end then respectively is resisted against on the tooth plate 21, and the latch on this tooth plate 21 23 also can be corresponding below shell neck 111, continue plane 271 in the perforation 27 of fixing steering block 24 in alignment with the binding face 441 of outer shaft 44 lower ends, and make outer shaft 44 lower ends set in the perforation 27, so that fixedly the ring tooth 25 on the steering block 24 can be corresponding to latch 23 belows, then the abaculus 34 on the brake shoes 31 of brake group 3 is embedded shell caulking groove 116, and groove 35 is placed on the shell projection 117, continue and from bottom to top brake shoes 31 is assembled on the shell support 115, and with season, fixedly steering block 24 and a Compress Spring 321 were placed among the interior tank 32 of

brake shoes

31, and 33 of this clamping blocks can be embedded in the engagement groove 26, Compress Spring 321 then stays on tank 32 and fixedly between steering block 24 bottoms, then 27 wear to brake shoes 31 lower ends to lock through boring a hole the lower end of interior axle 41 again again, continue it, wheel 13 is assembled on the shell support 115, in the present embodiment, this wheel 13 is two, be assembled in respectively two sides of shell support 115, again shell 12 is nested with outside shell block 11, and make hook portion 121 be able to mutually fasten with groove 113, interior axle 41 is then put slipper 45 with the upper end of outer shaft 44, and mat two encasement 47 coat upper end and a slipper 45 and a limiting stopper 471 of interior axle 41 and outer shaft 44 in the lump, at last again with outer cover 48 cover caps in encasement 47 outsides, [seeing also Fig. 3] is to finish the set of wheels of the utility model creation, and in this brake hole 46, can place a brake rod 5, in the present embodiment, brake hole 46 and brake rod 5 are corresponding polygonal appearance, therefore, can sharp control slipper 45 by brake rod 5 and rotate to drive whole group of wheel.

Control wheels in the utility model, this has and fixedly turns to and the effect such as brake, clip hole 451 on the slipper 45 of the start utilization braking group 4 of [seeing also Fig. 4] its each effect is controlled, in the present embodiment, this clip hole 451 is made as two, one of them degree of depth is darker, and another is then more shallow, with the various use states of graphic this set of wheels of explanation of next cooperation:

[seeing also Fig. 4 and Fig. 5] but should be wheel 13 walking freelies with rotation and be the state that does not fixedly turn to, its fixedly steering block 24 owing to direction group 2 is placed in the tank 32 of brake group 3, make this brake shoes 31 be able to the latch 23 on the tooth plate 21 is upwards pushed up, advance to avoid latch 23 intermeshing with ring tooth 25, and in the present embodiment, the end face 311 of this brake shoes 31 is provided with a jacking block 312, so being able to more effective latch 23 is made progress, pushes up this jacking block 312 of mat, this brake shoes 31 then by the retarding spring 43 of braking group 4 in outer shaft 44 upwards the elastic force of pushing tow shore interior axle 41, make it have the application force that draws of support upwards, and clipping block 42 is embedded in the more shallow clip hole 451 of the degree of depth on the slipper 45 under this state;

This clipping block 42 of [seeing also Fig. 6 and Fig. 7] this order is embedded in the darker clip hole 451 of the degree of depth on the

slipper

45,31 of brake shoes by the retarding springs 43 of braking group 4 in outer shaft 44 upwards the elastic force of pushing tow shore interior axle 41, make it have one and upwards support the application force that draws, with in order to do brake shoes 31 among clamping block 33 under this state can be sticked in engagement groove 26, and compression is arranged in the Compress Spring 321 of tank 32, so that fixing steering block 24, brake shoes 31, interior axle 41 can't rotate with outer shaft 44, to reach the function that fixedly turns to, allow wheel 13 only can make the straight line moving that 180 degree fixedly turn to;

This clipping block 42 of [seeing also Fig. 8] this order breaks away from the clip hole 451, axle 41 in the pushing of mat slipper 45 outer rims, 43 of retarding springs are compressed, to move down under this state in order to do this brake shoes 31, so that brake lining 36 is attached on the wheel 13, that is, because brake shoes 31 moves down, also so that fixedly steering block 24 and the ring tooth 25 expose to tank 32,23 energy of latch on this tooth plate 21 and this ring tooth 25 mesh simultaneously, mat it, have brake and the function that fixedly turns to concurrently to reach, so that wheel 13 can't be walked and rotated, yet, at this latch 23 during with 25 engagement of ring tooth, cause latch 23 to be able to closely mesh with encircling tooth 25 by the elastic force of returning spring 22, and, if latch 23 is failed to aim at and can't be meshed with ring tooth 25, the elastic force of returning spring 22 also provides a buffer action, therefore, and can be so that the engagement between latch 23 and the ring tooth 25 be more smooth and easy.

Control wheels in the utility model creation, its advantage is:

1, has and fixedly turn to and the effect of braking.

2, tooth plate can make the engagement between latch and the ring tooth more tight by the elastic force of returning spring on the one hand, and this elastic force also can be used as a cushion effect on the one hand, so that the more suitable field of the engagement between latch and the ring tooth.

Only the above only is a preferred embodiment of the utility model creation, when can not with the scope created of restrictions the utility model.The equalization of namely generally doing according to claim changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1. control wheels in one kind, it comprises at least:

2. middle control wheels as claimed in claim 1, it is characterized in that, the shell rack inner wall of this wheel seat group is provided with a shell caulking groove and a shell projection corresponding with the shell caulking groove, convex is provided with an abaculus that can be embedded in the shell caulking groove on a wherein lateral surface of the brake shoes of brake group, then is concaved with this shell projection corresponding to the another side place of abaculus and can sets in the inner groove to make this brake shoes be beneficial to being assembled in shell neck below and in wherein moving up and down.

3. middle control wheels as claimed in claim 1 is characterized in that, the place, bottom surface of the body section both sides of this wheel seat group respectively is concaved with recess, and the returning spring upper end of direction group is resisted against in the recess.

4. middle control wheels as claimed in claim 1 is characterized in that, the body section end of this wheel seat group is concaved with a groove, and the end of shell is extended with the hook portion of a fastener on groove.

5. middle control wheels as claimed in claim 1 is characterized in that, the tooth plate of this direction group is a ㄇ shape metal plate.

6. middle control wheels as claimed in claim 1 is characterized in that, are provided with a Compress Spring in the tank of this brake group, and this Compress Spring stays on tank and fixedly between the steering block bottom.

7. middle control wheels as claimed in claim 1 is characterized in that, the convex jacking block that can be resisted against tooth plate bottom that is provided with of a side on the end face of the brake shoes of this brake group.

8. middle control wheels as claimed in claim 1, it is characterized in that, this braking group includes interior axle, clipping block, retarding spring, outer shaft, slipper, brake hole, encasement and outer cover, should sequentially pass outer shaft by shell neck top by interior axle, the shell neck, perforation and brake shoes also are locked in the brake shoes bottom, should convex with clipping block in interior axle top, thereby and this retarding spring from bottom to top be placed through on the interior axle order should in axle when being placed through in the outer shaft retarding spring can be resisted against that outer shaft then can pass the shell neck and make the bottom place perforation in the outer shaft, be provided with slipper at this clipping block, described slipper below is formed with the clip hole that several embed for clipping block along outer rim, above slipper, then be formed with a position-limited trough with predetermined length, and in slipper, offer a brake hole, and at least two symmetrical encasement, this encasement coats outer shaft top and slipper, and between the encasement and clamping have one can the limiting stopper of position among position-limited trough, the outer cover cover cap is outside in encasement, in this brake hole, place one can order about after rotating slipper drive in the brake rod that moves up and down of axle.

9. middle control wheels as claimed in claim 8 is characterized in that, the outer shaft of braking group bottom is provided with binding face, when the perforation inwall of this direction group is formed with outer shaft and engages with the perforation in addition and plane of this binding face applying.

10. middle control wheels as claimed in claim 8 is characterized in that, the interior axle of braking group and outer shaft are round bar shape.