DE202014100910U1 - Roller with central locking - Google Patents

Abstract

A caster with central locking, comprising: - an upper base (10) which has a central partition (11) and forms an assembly space (12) on both sides, the two assembly spaces (12) corresponding to one another, with an axle hole (111) through which the central partition wall (11) runs and is connected to the two assembly spaces (12), the two assembly spaces (12) each providing a brake disc (13), one end of which extends outward and a zigzag engaging tooth end (131 ) and the other end of which forms a connecting opening (132), with a longitudinally extending assembly cavity (14) being arranged at one side end of the upper base (10) which is connected to the assembly spaces (12) and an opening (141 ) having; - a lower base (20) mounted on the lower part of the upper base (10), from the lower base (20) two connecting partitions (21) corresponding to the two assembly spaces (12) on the two sides of the upper base (10 ), with an axial through opening (211) corresponding to the axle hole (111) being formed on each of the two connecting partition walls (21), an axle journal (22) being guided through the axial through openings (211) and the axle hole (111), a wheel (23) is also attached to the outside of the two connecting partition walls (21), the two wheels (23) being connected to the axle journal (22), with a toothing on the inside of the two wheels (23) (231) is formed corresponding to the engaging tooth end (131) of the brake disc (13), a support part (24) corresponding to the mounting cavity (14) being further arranged at one side end of the lower base (20); - A holding unit (30) which has a brake body (31), a direction-locking ring gear (32), a brake ring gear (33) and a coupling bearing (34), which in the order in the assembly cavity (14) of the upper base ( 10) are installed, wherein the brake body (31) has a head end (311), wherein a conical protruding rib (312) is arranged in the middle of the bottom of the head end (311), wherein at the end edge of the bottom of the head end (311) limiting depressions (314) and engaging tooth parts (315) are arranged, wherein at the lower end of the protruding rib (312) of the brake body (31) a fastening bearing (316) is provided, on the lower part of which a first spring (35) is inserted, wherein on the upper surface of the head end (311) of the brake body (a) non-round mounting hole (317) is arranged, wherein in the center of the direction-locking ring gear (32) a through hole (321) is arranged through which the protruding rib (312) of the Bremskö rpers (31), with both ...

Description

Technical area

The invention relates to a roller, in particular roller with central locking.

State of the art

In most conventional central locking casters, only the brake can be controlled; only a few wheels for transport bats in hospitals and medical practices are equipped with a directional lock, by whose effect the bed can only run straight; However, the directional lock must be operated separately, the brake and the directional lock are both arranged on the roller and are each controlled by a pedal pedal; the conventional casters with central locking are disadvantageous in that the brake and the directional lock are operated separately, which is impractical for the user. There is also a central locking roller on the market, which the user can apply to steer, roll and brake in a straightforward manner through a three-step control, so that the transport can be used with the central locking roller in better conditions of use; however, the surface of the wheel of the conventional caster with central locking is worn by frequent braking and positioning of the wheel, so that the wheel wall becomes thinner, which leads to an increase in the distance between the brake disc and the surface of the wheel; due to this, in a normal braking operation, the brake disk can not precisely contact the wheel wall, thereby impairing the sensitivity of the brake, so that the transportation means can not be effectively stopped; the only solution is to replace a new wheel so that the brake disc and the wheel are kept at a preferred braking distance; this is a deficiency in the use of the conventional central locking roller.

In view of this, the inventor has actively sought solutions based on his many years of experience in development and production in relevant industrial areas. Aiming at the above-mentioned goal, he has been deeply involved in the design of the roller, has considered it well and ultimately successfully developed an industrially applicable roller with central locking.

Content of the utility model

In the conventional casters with central locking the surface of the wheel is worn by frequent braking and positioning of the wheel, so that the wheel wall becomes thinner, which leads to an increase in the distance between the brake disc and the surface of the wheel, due to the increased distance between the Brake disc and the surface of the wheel, the brake disc in a normal braking operation can not be in precise contact with the wheel wall, whereby the sensitivity of the brake is impaired, so that the transport can not be stopped effectively, the only solution a new wheel must be changed, so that the brake disc and the wheel remain at a preferred braking distance; this is a deficiency in the use of the conventional central locking roller; The invention has for its object to eliminate the defect.

The invention provides a central locking caster comprising an upper base, a lower base, a holding unit, a mounting bearing, a control unit, and an aluminum control rod; the upper base has a central partition wall and forms an assembly space on both sides, the two assembly spaces corresponding to each other, wherein an axle hole passes through the central partition wall and is connected to the two assembly spaces, wherein the two assembly spaces each provide a brake disc one end of which extends outwardly and has a zigzag engaging tooth end and the other end forms a connection opening, a longitudinal end mounting cavity being disposed at a side end of the upper base and connected to the assembly spaces and having an aperture; the lower base is mounted on the lower part of the upper base, extending from the lower base two connecting partitions corresponding to the two assembly spaces on both sides of the upper base, wherein on the two connecting partitions in each case an axial passage opening corresponding to the axle hole is formed, wherein a journal is guided through the axial through holes and the axle hole, wherein further on the outside of the two connecting partitions in each case a wheel is mounted, wherein the two wheels are connected to the axle journal, wherein on the inside of the two wheels each have a toothing corresponding to the engagement tooth end of the Brake disc is formed, wherein at a side end of the lower base remote a support member is arranged corresponding to the mounting cavity; the holding unit comprises a brake body, a direction-detecting ring gear, a brake sprocket and a coupling bearing, which are installed in the order in the mounting cavity of the upper base, wherein the Brake body having a head end, wherein in the center of the bottom of the head end, a conical protruding rib is disposed, wherein at the end edge of the bottom of the head end limiting recesses and engaging tooth parts are arranged, wherein the brake body provides the mounting bearing, which is arranged at the lower end of the protruding rib, wherein on the lower part of the mounting bearing, a first spring is inserted, wherein on the upper surface of the upper end of the brake body, a non-circular mounting hole is arranged, wherein in the middle of the direction-determining sprocket, a through hole is arranged through which passes the protruding rib of the brake body, wherein on both sides of the direction-detecting sprocket each direction-determining approach is arranged on the upper surface limiting increases corresponding to the boundary recesses of the brake body are arranged, wherein the lower part of the directionally fixed llenden sprocket, a second spring is mounted, wherein in the center of the brake sprocket, a through hole is arranged through which the protruding rib of the brake body is guided, wherein at the bottom of the brake sprocket, a third spring is mounted, wherein on both sides of the brake sprocket each having a recess is formed, which is plugged into the direction-detecting approach of the directional sprocket, wherein at the end portions of the inner walls of the other two sides of the brake sprocket ratchet teeth corresponding to the Eingriffzahnteilen the brake body are arranged, wherein at the lower part of the coupling bearing a fourth spring is attached to the support part the lower base is supported, wherein on one side of the coupling bearing two connecting parts are arranged, which extend over the aperture up to the assembly spaces on the two rivets of the upper base, wherein the coupling bearing further by means of two Each mounting plate is assembled and coupled with two brake discs, wherein the second and the third spring are supported on the upper surface of the coupling bearing, wherein in the center of the upper surface of the coupling bearing, a support projection is arranged; the control unit comprises a mounting cylinder, whose one side end is installed together with a bearing element in the mounting cavity of the upper base and whose other end forms an annular groove, wherein on two opposite sides of the annular groove in each case a threaded bore is arranged, wherein the mounting cylinder a Bolt hole through which a spindle is guided, wherein at one end of the spindle, a non-cylindrical mounting end is formed, wherein the spindle is guided through the mounting hole of the brake body and thus forms a coupling, with a spring element inserted on the other end of the spindle is, wherein at the end of the mounting cylinder, a connecting member is fixed, on the end portion of which a fastening piece is further attached, having a recess into which a pin can be installed, wherein the surface of the pin protrudes from the recess; the aluminum control rod has two housings which in the assembled state surrounds the control unit, wherein a bore extends transversely through the upper end part of the aluminum control rod, wherein a receiving chamber is formed in the interior of the aluminum control rod, at the upper end of which a protruding locking end is arranged is, wherein in the receiving chamber, an adjusting element is installed, through the center of a non-circular control opening passes, wherein on the outer edge of the actuating element a trough is concave, on which the pin is supported, arranged on both sides of the trough each a direction-detecting projection and a brake projection are further, wherein between the direction-detecting projection and the trough further arranged a direction-detecting recess. Thus, a roller is built with central locking.

• 1. durch die Zusammenwirkung des Bremskörpers der Halteeinheit mit dem richtungsfeststellenden Zahnkranz und dem Bremszahnkranz wird ein richtungsfestgestellter Zustand zwischen der oberen Basis und der Steuereinheit erzielt, wobei der richtungsfeststellende Zahnkranz und der Bremszahnkranz zuerst mittels der richtungsfeststellenden Ansätze und der Aussparungen in Eingriff gebracht werden und so sich gegenseitig beschränken; weiter sind entsprechend den Begrenzungsvertiefungen und den Eingriffzahnteilen des Bremskörpers jeweils Begrenzungserhöhungen und Sperrzähne angeordnet, um einen stabilen und sicheren Eingriff zwischen dem Bremskörper, dem richtungsfeststellenden Zahnkranz und dem Bremszahnkranz zu ermöglichen, wodurch die Genauigkeit eines richtungsfestgestellten Einsatzes der Laufrolle erhöht wird, sodass die Laufrolle mit Zentralverriegelung sicher in einer festen Richtung fortläuft und nicht unter Einfluss einer Außenkraft die Laufrichtung verändert; und
• 2. durch die Zusammenwirkung des Kopplungslagers mit den Anschlussplatten werden die zwischen der oberen Basis und der unteren Basisangebrachten Bremsscheiben miteinander gekoppelt, wobei die mittige Trennwand der oberen Basis mit einem Mittelloch versehen ist, durch das der Mittelbolzen an die Anschlussplatten angeschlossen wird, sodass die Anschlussplatten mit dem Mittelbolzen nach dem Hebelprinzip betätigt werden können, wobei an den Innenseiten der an den Außenseiten der unteren Basis montierten Räder jeweils eine Verzahnung entsprechend dem Eingriffzahnende der Bremsscheibe angeordnet ist, sodass die Bremsscheibe und das Rad durch den Eingriff in einen Bremszustand gebracht werden können, wobei die durch die Benutzung der Oberfläche des Rades entstandene Abnutzung die Bremsfunktion nicht beeinträchtigt, wodurch eine längere Lebensdauer der erfindungsgemäßen Laufrolle ermöglicht wird.

Compared with the prior art, the invention has the following advantages:

• 1. by the interaction of the brake body of the holding unit with the directional sprocket and the brake sprocket a direction-detected state between the upper base and the control unit is achieved, wherein the direction-determining sprocket and the brake sprocket are first brought by means of the directionally detecting approaches and the recesses into engagement and so restrict each other; Further, according to the limiting recesses and the engaging tooth parts of the brake body each limit increases and ratchet teeth are arranged to allow a stable and secure engagement between the brake body, the directional sprocket and the brake sprocket, whereby the accuracy of a directionally determined use of the roller is increased, so that the roller with Central locking safely in a fixed direction and does not change the direction under the influence of an external force; and
• 2. by the interaction of the coupling bearing with the terminal plates, the brake discs are coupled between the upper base and the lower base, wherein the central partition wall of the upper base is provided with a central hole through which the center bolt is connected to the terminal plates, so that the connection plates can be actuated with the center pin according to the lever principle, wherein on the inner sides of the wheels mounted on the outer sides of the lower base each have a toothing corresponding to the engagement tooth end of the brake disc is arranged so that the brake disk and the wheel can be brought by the engagement in a braking state, wherein the resulting from the use of the surface of the wheel wear does not affect the braking function, whereby a longer life of the roller according to the invention is made possible.

Short description of the drawing

1 shows a perspective view of a roller according to the invention with central locking.

2 shows an explosive representation of the upper base, the lower base and the holding unit of the roller according to the invention.

3 shows an explosive representation of the control unit and the aluminum control rod of the roller according to the invention.

4 shows a sectional view of the roller according to the invention in the assembled state and a schematic representation of a normal state of use.

5 shows a schematic representation of the sliding of the roller according to the invention in a determined direction.

6 shows a schematic representation of the sliding of the roller according to the invention in a determined direction in the engaged state.

7 shows a schematic representation of the braking state of the roller according to the invention in a determined direction.

8th shows a partial perspective view of the braking state of the roller according to the invention in a determined direction.

embodiment

In the following, objects, features and advantages of the present invention will become more apparent from the detailed description of an embodiment and the accompanying drawings.

As in 1 . 2 and 3 shown, the central locking roller according to the invention comprises an upper base 10 , a lower base 20 , a holding unit 30 , a control unit 40 and an aluminum control rod 50 ; the upper base 10 has a central partition 11 on and forms an assembly space on both sides 12 , where the two assembly spaces 12 correspond to each other, with an axle hole 111 through the central partition 11 passes through and with the two assembly spaces 12 connected, the two assembly spaces 12 one brake disc each 13 provide one end extending outwardly and a zigzag engaging tooth end 131 and the other end has a connection opening 132 forms, being at one the axle hole 111 the upper base 10 corresponding location on the wall of the brake disc 13 a through hole 133 is formed, wherein at one side end of the upper base 10 a longitudinal mounting cavity 14 is arranged with the assembly spaces 12 is connected and an opening 141 having; the lower base 20 is at the bottom of the upper base 10 mounted, being from the lower base 20 two connecting partitions 21 according to the two assembly spaces 12 on the two sides of the upper base 10 extend, wherein at the two connecting partitions 21 in each case an axial passage opening 211 according to the axle hole 111 is formed, wherein a stub axle 22 through the axial passage openings 211 and the axle hole 111 passed, wherein further on the outside of the two connecting partitions 21 one wheel each 23 is attached, with the two wheels 23 with the axle journal 22 are connected, taking on the inside of the two wheels 23 each a toothing 231 according to the tooth mesh end 131 the brake disc 13 is formed, wherein at one side end of the lower base 20 Further, a support member 24 according to the mounting cavity 14 is arranged, wherein on the upper end face of the support part 24 limiting ribs 241 are arranged and from the lower end face of the same a swivel connection 242 protruding, passing through the upper base 10 a journal opening 15 passes through, which is the swivel connection 242 of the support part 24 corresponds to, with the journal opening 15 a cone 151 is pivotally connected; the holding unit 30 has a brake body 31 , a directional sprocket 32 , a brake sprocket 33 and a docking camp 34 on, in order in the mounting cavity 14 the upper base 10 are installed, the brake body 31 a headboard 311 having, in the middle of the bottom of the head end 311 a conical protruding rib 312 is arranged, being between the headboard 311 and the protruding rib 312 Furthermore, a positioning projection 313 is formed extended, wherein at the end edge of the bottom of the head end 311 restriction recesses 314 and engaging tooth parts 315 are arranged, wherein at the lower end of the protruding rib 312 of the brake body 31 a mounting camp 316 is provided, on the lower part of a first spring 35 is plugged, being on the upper surface of the head end 311 the brake body a non-circular mounting hole 317 is arranged, being in the middle of the directional sprocket 32 a through hole 321 is arranged, through which the protruding rib 312 of the brake body 31 runs, with on both sides of the direction-detecting sprocket 32 each a direction-determining approach 322 is arranged, on whose upper surface limit increases 323 according to the limiting recesses 314 of the brake body 31 are arranged, wherein at the bottom of the direction-detecting ring gear 32 a second spring 36 is attached, wherein the mounting cavity 14 Furthermore, a support side wall 142 is limited, at which the direction-determining sprocket 32 and the brake sprocket 33 supported and so limited, wherein in the middle of the brake ring gear 33 a passage opening 331 is arranged, through which the protruding rib 312 of the brake body 31 is passed through, wherein at the bottom of the brake sprocket 33 a third spring 37 is attached, wherein on both sides of the brake ring gear 33 one recess each 332 is trained on the directional approach 322 of the direction-determining sprocket 32 is inserted, wherein at the end portions of the inner walls of the other two sides of the brake ring gear 33 ratchets 333 according to the Eingriffzahnteilen 315 of the brake body 31 are arranged, wherein at the bottom of the coupling bearing 34 a fourth spring 38 is attached to the support part 24 the lower base 20 supported, being on one side of the coupling bearing 34 two connecting parts 341 are arranged, extending over the opening 141 up to the assembly areas 12 at the two rivets of the upper base 10 extend, wherein the coupling bearing 34 also by means of two connection plates 39 each with connection openings 132 two brake discs 13 assembled and coupled, in accordance with the two connection plates 39 an opening 112 and a center hole 113 through the central partition 11 the upper base 10 pass through so that the coupling bearing 34 when connecting to the brake discs 13 by means of the two connection plates 39 through the opening 112 can be coupled, the two connection plates 39 continue through the center hole 113 in combination with a center bolt 114 connected to each other and limited to form a pivot center, wherein the second and the third spring 36 . 37 on the upper surface of the coupling bearing 34 support, with the second spring 36 finer and longer than the third spring 37 is, so the second spring 36 through the passage opening 331 of the brake gear rim 33 is guided and between the directional sprocket 32 and the coupling warehouse 34 expands, with the direction-detecting sprocket 32 through the second spring 36 pressed so that it is relatively floating in the brake sprocket 33 as high as the ratchet teeth 333 is arranged, wherein in the middle of the upper surface of the coupling bearing 34 a support projection 342 is arranged, through which the on the end part of the mounting bearing 316 inserted first spring 35 is limited; the control unit 40 has a mounting cylinder 41 on, whose one side end together with a bearing element 411 in the mounting cavity 14 the upper base 10 is fitted, being on the inner wall of the mounting cavity 14 a limit projection 143 according to the bearing element 411 of the mounting cylinder 41 is formed to effect positioning, wherein after installation of the mounting cylinder 41 in the mounting cavity 14 the upper base 10 a riveting supernatant 412 at the end part of the mounting cylinder 41 riveted by punching, being at the other end of the mounting cylinder 41 an annular groove 413 is formed, wherein on two opposite sides of the annular groove 413 one threaded hole each 414 is arranged, wherein the mounting cylinder 41 a bolt hole 415 through which a spindle 42 passed through, wherein at one end of the spindle 42 a non-cylindrical mounting end 421 is formed, wherein the spindle 42 through the mounting hole 317 of the brake body 31 passed through and so forms a coupling, wherein on the other end of the spindle 42 a spring element 422 is plugged, taking at the end of the mounting cylinder 41 a connecting element 43 is fixed, on the end portion of which a fastening piece 44 is attached, that is a recess 441 has, in which a pin 45 can be installed, the surface of the pen 45 from the recess 441 protrudes; the aluminum control rod 50 has two housings 51 on, in the assembled state, the control unit 40 wrapped, taking on the two housings 51 each a locking projection 511 according to the annular groove 413 of the mounting cylinder 41 is arranged, wherein a screw 512 on the locking projection 511 can be screwed; through the upper end portion of the aluminum control rod 50 runs a hole 52 transverse, being inside the aluminum control rod 50 a receiving chamber 53 is formed, at the upper end of a projecting lock end 531 is arranged, wherein in the receiving chamber 53 an actuator 54 is installed, through the middle of a non-circular control opening 541 passes through, wherein at the outer edge of the actuating element 54 a hollow 542 is concave, on which the pin 45 supported, on both sides of the trough 542 each a direction-determining supernatant 543 and a brake projection 544 are arranged, wherein between the directional supernatant 543 and the hollow 542 Furthermore, a direction-determining recess 545 is arranged.

For the assembly of the roller according to the invention is on 1 to 3 combined with 4 directed. First, the mounting cavity 14 the upper base 10 with the mounting cylinder 41 the control unit 40 so composed of two bearing elements 411 by means of the mounting cylinder 41 each at the top and bottom of the boundary supernatant 143 in the mounting cavity 14 support; continues the mounting cylinder 41 between the two bearing elements 411 fitted and with the mounting cavity 14 connected so that the mounting cylinder 41 at the upper base 10 can swing freely; after the mounting cylinder 41 in the mounting cavity 14 has been incorporated, is by punching a riveting supernatant 412 at the lower end of the mounting cylinder 41 riveted, with the riveting supernatant 412 exactly the lower end of the bearing element 411 under the boundary supernatant 143 wrapped around the connection of the mounting cylinder 41 in the mounting cavity 14 to reinforce; between the mounting cavity 14 the upper base 10 and the lower base 20 Further, the holding unit 30 installed, the brake body 31 , the directional sprocket 32 , the brake sprocket 33 and the coupling camp 34 the holding unit 30 be installed in the order, with the protruding rib 312 of the brake body 31 in the order through the through hole 321 and the through hole 331 of the direction-determining sprocket 32 and the brake gear rim 33 is guided, wherein at the distal end of the brake body 31 a mounting camp 316 is mounted, on which a first spring 35 is plugged, which is the support projection 342 of the coupling camp 34 acted upon by spring force, wherein the respective lower part of the direction-detecting sprocket 32 and the brake gear rim 33 in each case a second and a third spring 36 . 37 be attached to the coupling bearing 34 support, with the second spring 36 finer and longer than the third spring 37 is, so the second spring 36 through the passage opening 331 of the brake gear rim 33 is guided and between the directional sprocket 32 and the coupling warehouse 34 expands, with the direction-detecting sprocket 32 through the second spring 36 pressed so that it is relatively floating in the brake sprocket 33 as high as the ratchet teeth 333 is arranged, wherein the direction-detecting sprocket 32 and the brake sprocket 33 both through the supporting side wall 142 of the mounting cavity 14 be supported and limited; the brake body 31 gets through the first spring 35 so acted upon and by the support side wall 142 of the mounting cavity 14 so limited, that between the limiting well 314 and the engagement tooth part 315 and between the directional sprocket 32 and the brake ring 33 a gap is created for free movement, with the connecting parts 341 on one side of the coupling bearing 34 over the opening 141 of the mounting cavity 14 in the assembly rooms 12 on the two sides of the upper base 10 extend and each for connecting the connection plates 39 with the brake discs 13 the assembly spaces 12 on the two sides of the upper base 10 serve; in accordance with the two connection plates 39 run an opening 112 and a center hole 113 through the central partition 11 the upper base 10 through, so the two connection plates 39 and the two brake discs 13 in the assembled state, continue through the opening 112 coupled together and so coupled, with the center hole 113 further in combination with a center bolt 114 the two connection plates 39 connected in series, so that the two connection plates 39 limited and through the coupling bearing 34 to be moved, whereby the two connection plates 39 with the center bolt 114 be kept pivotable as an axis according to the lever principle; the lower and the upper base 20 . 10 Furthermore, with the swivel connection 242 and the journal opening 15 in conjunction with a pin 151 rotatably connected to each other, the lower base 20 with the pin 151 as an axis 151 mounted pivotally upwards and by latching with the upper base 10 is firmly connected, being between the two connecting partitions 21 a space is formed, which is to rest on the central partition wall 11 the upper base 10 and on the outsides of the two brake discs 13 is brought, whereby the axial passage openings 211 the connecting partitions 21 with the axle hole 111 and the connection opening 133 be connected and the support part 24 the lower base 20 at the same time upwards against the bottom of the coupling bearing 34 and the fourth spring 38 pushes, bringing the upper base 10 and the lower base 20 assembled together and the holding unit 30 in the mounting cavity 14 is mounted limited; Now it will be a journal 22 for passing through the axial passage openings 211 , the connection opening 133 and the axle hole 111 brought to two wheels 23 on the axle journal 22 to attach, with the two wheels 23 for installation on the connecting partitions 21 so on the two sides of the lower base 20 be brought that the gearing 231 on the inside of the wheel 23 the engaging tooth part 131 the brake disc 13 corresponds; the spindle 42 the control unit 40 gets over the bolt hole 415 of the mounting cylinder 41 inserted, whereby by the connection of the mounting end 421 the spindle 42 and the mounting hole 317 of the brake body 31 the spindle 42 and the brake body 31 can be moved synchronously; furthermore, at the top of the spindle 42 a spring element 422 attached, and at the end part of the spindle 42 becomes a connecting element 43 bolted, on the end part of the attachment piece 44 is plugged; Furthermore, the pen 45 to rest on the recess 441 of the attachment piece 44 brought the surface of the pen 45 from the recess 441 protrudes; Finally, the two assembled housing 51 the aluminum control rod 50 for wrapping the control unit 40 brought, wherein the locking projection 511 for locking in the annular groove 413 of the mounting cylinder 41 is brought, each with a screw 512 into the threaded hole 414 is screwed to the locking projection 511 to fix; when in the receiving chamber 53 the aluminum control rod 50 arranged adjusting element 54 be the tax opening 541 and the hole 52 to connect with each other; Furthermore, the trough 54 at the bottom of the aluminum control rod 50 for attachment to the pen 45 the control unit 40 and thereby to limit the stite 45 brought to bring the roller in a direction not detected and not braked state. With the construction shown above, a roller is built with central locking.

For the use of the roller according to the invention with central locking is on 4 directed. To mount the roller with central locking of the mounting cylinder 41 the control unit 40 together with the aluminum control rod 50 mounted at a corresponding location on the bottom of a means of transport so that the bore 52 the aluminum control rod 50 and the control port 541 of the actuating element 54 be mounted according to an actuating rod (not shown in the drawing), so that the actuating element 54 can be operated by turning. If the central locking caster is used normally, the trough will support itself 542 of the actuating element 54 and the pen 45 the control unit 40 from each other and thereby limited each other, the spindle 42 is brought into a setting state in which it is not lowered down and so the brake body 31 does not bother; the upper base 10 and the lower base 20 are brought to free distraction, and the wheels 23 are brought to free rotation; Thus, the means of transport can be pushed normally with the roller with central locking.

If the user also wants to determine the running direction of the roller so that the means of transport can only be pushed in a straight line, the adjustment of the roller as in 5 and 6 shown made. First, the upper and the lower base 10 . 20 corrected so that the wheels 23 in the same direction, so that the actuator 54 can be made to rotate in one direction; the hollow 542 of the actuating element 54 Will to release from the pen 45 over the attachment piece 44 brought; In addition, the direction-determining recess 545 on one side of the control element 54 and the pen 45 pushed into each other and positioned so while the brake overhang 544 on the other side of the actuator 54 is brought up to turn so that it is at the protruding lock end 531 is supported and limited by the same. Now the spindle will turn 42 by the actuating action of the actuating element 54 Move down and at the same time down against the brake body 31 press so that the positioning protrusion 313 of the brake body 31 between the limit increases 323 of the direction-determining sprocket 32 engages; In addition, the boundary wells 314 and the engaging tooth parts 315 each for engaging in the limit increases 323 and the ratchet teeth 333 of the direction-determining sprocket 32 and the brake gear rim 33 brought so that the brake body 31 by the intervention of the direction-determining sprocket 32 and the brake gear rim 33 limited and held against rotation; thereby restricting the spindle 42 , the mounting cylinder and the upper base 10 each other and so can not rotate freely; so the roller is determined in a particular direction.

For the braking operation of the roller after the transport of the transport at a predetermined location is on 7 and 8th directed. Now the actuator is 54 to rotate in a different direction, with the brake projection 544 of the actuating element 54 so he is brought down to push down that he is on the pen 45 is present during the positioning projection 543 on the other side of the actuator 54 is brought up to swing so that he is at the above locking end 531 is supported and thereby limited; because the brake supernatant 544 thicker than the directional recess 545 , the spindle can 42 now be moved further down to move, so that the brake body 31 with the direction-determining sprocket 32 and the brake sprocket 33 is engaged, whereby the roller is determined in a certain direction; Furthermore, the mounting bracket 316 at the end of the protruding rib 312 pressed down so far that it is at the coupling bearing 34 bears; the coupling warehouse 34 is lowered and brings so with the connecting parts 341 the connection plates 39 in motion, with one end of the connection plates 39 on which the brake discs 13 are attached, with the center bolt 114 is raised as an axis to the Eingriffzahnenden 131 the two brake discs 13 and the gears 231 the two wheels 23 to engage, causing the wheels 23 are held against rotation; in this way the roller is braked.

• 1. durch die Zusammenwirkung des Bremskörpers 31 der Halteeinheit 30 mit dem richtungsfeststellenden Zahnkranz 32 und dem Bremszahnkranz 33 wird ein richtungsfestgestellter Zustand zwischen der oberen Basis 10 und der Steuereinheit 40 erzielt, wobei der richtungsfeststellende Zahnkranz 32 und der Bremszahnkranz 33 zuerst mittels der richtungsfeststellenden Ansätze 322 und der Aussparungen 332 in Eingriff gebracht werden und so sich gegenseitig beschränken; weiter sind entsprechend den Begrenzungsvertiefungen 314 und den Eingriffzahnteilen 315 des Bremskörpers 31 jeweils Begrenzungserhöhungen 323 und Sperrzähne 333 angeordnet, um einenstabilen und sicheren Eingriff zwischen dem Bremskörper 31, dem richtungsfeststellenden Zahnkranz 32 und dem Bremszahnkranz 33 zu ermöglichen, wodurch die Genauigkeit eines richtungsfestgestellten Einsatzes der Laufrolle erhöht wird, sodass die Laufrolle mit Zentralverriegelung sicher in einer festgestellten Richtung fortläuft und nicht unter Einfluss einer Außenkraft die Laufrichtung verändert; und
• 2. durch die Zusammenwirkung des Kopplungslagers 34 mit den Anschlussplatten 39 werden die zwischen der oberen Basis 10 und der unteren Basis 20 angebrachten Bremsscheiben 13 miteinander gekoppelt, wobei die mittige Trennwand 11 der oberen Basis 10 mit einem Mittelloch 113 versehen ist, durch das der Mittelbolzen 114 an die Anschlussplatten 39 angeschlossen wird, sodass die Anschlussplatten 39 mit dem Mittelbolzen 114 nach dem Hebelprinzip betätigt werden können, wobei an den Innenseiten der an den Außenseiten der unteren Basis 20 montierten Räder 23 jeweils eine Verzahnung 231 entsprechend dem Eingriffzahnende 131 der Bremsscheibe 13 angeordnet ist, sodass die Bremsscheibe 13 und das Rad 23 durch den Eingriff in einen Bremszustand gebracht werden können, wobei die durch die Benutzung der Oberfläche des Rades 23 entstandene Abnutzung die Bremsfunktion nichtbeeinträchtigt, wodurch eine längere Lebensdauer der erfindungsgemäßen Laufrolle ermöglicht wird.

With the construction of the concrete embodiment shown above, the following advantages can be achieved with the roller according to the invention with central locking:

• 1. by the interaction of the brake body 31 the holding unit 30 with the direction-determining sprocket 32 and the brake sprocket 33 becomes a directional condition between the upper base 10 and the control unit 40 achieved, the Directional sprocket 32 and the brake sprocket 33 first by means of directional approaches 322 and the recesses 332 be engaged and so restrict each other; are further according to the limiting depressions 314 and the engaging tooth parts 315 of the brake body 31 each limit increases 323 and ratchet teeth 333 arranged to provide a stable and secure engagement between the brake body 31 , the directional sprocket 32 and the brake sprocket 33 allowing the accuracy of a directionally determined use of the roller is increased, so that the central locking roller safely in a fixed direction and does not change the direction under the influence of an external force; and
• 2. through the interaction of the coupling bearing 34 with the connection plates 39 be the between the upper base 10 and the lower base 20 attached brake discs 13 coupled together, with the central partition wall 11 the upper base 10 with a center hole 113 is provided, through which the center bolt 114 to the connection plates 39 is connected so that the connection plates 39 with the center bolt 114 can be operated according to the principle of leverage, being on the insides of the outer sides of the lower base 20 mounted wheels 23 each a toothing 231 according to the tooth mesh end 131 the brake disc 13 is arranged so that the brake disc 13 and the wheel 23 can be brought by the engagement in a braking state, which by the use of the surface of the wheel 23 Wear caused the brake function is not affected, whereby a longer life of the roller according to the invention is made possible.

The invention relates to a roller with central locking, in which by the interaction of a brake body 31 a holding unit 30 with a directional sprocket 32 and a brake sprocket 33 a directional condition between an upper base 10 and a control unit 40 is achieved, so a stable and secure engagement between the brake body 31 , the directional sprocket 32 and the brake sprocket 33 allowing the accuracy of a directionally determined use of the roller is increased, so that the central locking roller securely runs in a fixed direction and does not change the direction under the influence of an external force; a central partition 11 the upper base 10 is with a center hole 113 provided by a center bolt 114 to the connection plates 39 is connected so that the connection plates 39 with the center bolt 114 can be operated by the lever principle and between a coupling bearing 34 and two brake discs 13 are attached, taking on the insides of two on the outsides of the lower base 20 mounted wheels 23 each a toothing 231 according to the tooth mesh end 131 the brake disc 13 is arranged so that the brake disc 13 and the wheel 23 can be brought by the engagement in a braking state, which by the use of the surface of the wheel 23 Wear caused the brake function is not impaired, whereby a longer life of the roller according to the invention is made possible.

LIST OF REFERENCE NUMBERS

10

upper base

11

central partition

111

axle hole

112

opening

113

center hole

114

central kingpin

12

assembly room

13

brake disc

131

Engaging tooth end

132

connecting opening

133

through hole

14

Mounting cavity

141

perforation

142

Abstützseitenwand

143

Limiting supernatant

15

Journal opening

151

spigot

20

lower base

21

interconnection divider wall

211

axial passage opening

22

journal

23

wheel

231

gearing

24

supporting part

241

limiting rib

242

swivel connection

30

holding unit

31

Brakes

311

head

312

protruding rib

313

Positionierüberstand

314

limiting groove

315

Engaging tooth part

316

mounting bearings

317

mounting hole

32

Directional sprocket

321

Through Hole

322

directional approach

323

limit increase

33

Braking gear

331

Through opening

332

recess

333

ratchet

34

coupling bearing

341

connecting part

342

support projection

35

first spring

36

second spring

37

third spring

38

fourth spring

39

connecting plate

40

control unit

41

mounting cylinder

411

bearing element

412

Vernietungsüberstand

413

ring groove

414

threaded hole

415

bolt hole

42

spindle

421

mounting end

422

spring element

43

connecting element

44

fastening piece

441

recess

45

pen

50

Aluminum control rod

51

casing

511

catch projection

512

screw

52

drilling

53

receiving chamber

531

protruding lock end

54

actuator

541

control port

542

trough

543

directional supernatant

544

Brake supernatant

545

directional opening

Claims (10)

Caster with central locking, comprising: - an upper base ( 10 ), which has a central partition ( 11 ) and on both sides each have an assembly space ( 12 ), wherein the two assembly spaces ( 12 ) correspond to each other, wherein an axle hole ( 111 ) through which the central partition ( 11 ) and with the two assembly spaces ( 12 ), the two assembly spaces ( 12 ) each a brake disc ( 13 ), one end of which extends outwardly and a zigzag engaging tooth end (FIG. 131 ) and the other end has a connection opening ( 132 ), wherein at one side end of the upper base ( 10 ) a longitudinally extending mounting cavity ( 14 ) arranged with the assembly spaces ( 12 ) and an opening ( 141 ) having; - a lower base ( 20 ) located at the lower part of the upper base ( 10 ), wherein from the lower base ( 20 ) two connecting partitions ( 21 ) according to the two assembly spaces ( 12 ) on both sides of the upper base ( 10 ), wherein at the two connecting partitions ( 21 ) each have an axial passage opening ( 211 ) corresponding to the axle hole ( 111 ) is formed, wherein a journal ( 22 ) through the axial passage openings ( 211 ) and the axle hole ( 111 ) is passed, wherein further on the outside of the two connecting partitions ( 21 ) one wheel each ( 23 ), the two wheels ( 23 ) with the journal ( 22 ), wherein on the inside of the two wheels ( 23 ) each a toothing ( 231 ) corresponding to the engagement tooth end ( 131 ) of the brake disc ( 13 ) is formed, wherein at one side end of the lower base ( 20 ) further a support part ( 24 ) according to the mounting cavity ( 14 ) is arranged; A holding unit ( 30 ), which has a brake body ( 31 ), a directional sprocket ( 32 ), a brake sprocket ( 33 ) and a coupling bearing ( 34 ) arranged in the assembly cavity (in 14 ) of the upper base ( 10 ) are installed, wherein the brake body ( 31 ) a headboard ( 311 ), wherein in the middle of the bottom of the head end ( 311 ) a conical protruding rib ( 312 ) is arranged, wherein at the end edge of the bottom of the head end ( 311 ) Boundary recesses ( 314 ) and engaging tooth parts ( 315 ) are arranged, wherein at the lower end of the protruding rib ( 312 ) of the brake body ( 31 ) a mounting bearing ( 316 ) is provided, on whose lower part a first spring ( 35 ), wherein on the upper surface of the head end ( 311 ) of the brake body (a) non-round mounting hole ( 317 ) is arranged, wherein in the middle of the direction-detecting sprocket ( 32 ) a through hole ( 321 ) is arranged, through which the protruding rib ( 312 ) of the brake body ( 31 ), wherein on both sides of the direction-detecting ring gear ( 32 ) a direction-finding approach ( 322 ) is arranged, on whose upper surface boundary increases ( 323 ) corresponding to the limiting recesses ( 314 ) of the brake body ( 31 ) are arranged, wherein at the bottom of the direction-detecting sprocket ( 32 ) a second spring ( 36 ) is mounted, wherein in the middle of the brake sprocket ( 33 ) a passage opening ( 331 ) is arranged, through which the protruding rib ( 312 ) of the brake body ( 31 ) is guided through, wherein at the lower part of the brake sprocket ( 33 ) a third spring ( 37 ) is mounted, wherein on both sides of the brake gear rim ( 33 ) each have a recess ( 332 ) based on the direction-finding approach ( 322 ) of the direction-determining sprocket ( 32 ) is inserted, wherein at the end parts of the inner walls of the other two sides of the brake sprocket ( 33 ) Ratchet teeth ( 333 ) corresponding to the engaging tooth parts ( 315 ) of the brake body ( 31 ) are arranged, wherein at the lower part of the coupling bearing ( 34 ) a fourth spring ( 38 ) attached to the support member ( 24 ) of the lower base ( 20 ) is supported, wherein on one side of the coupling bearing ( 34 ) two connecting parts ( 341 ) are arranged, which extend over the opening ( 141 ) to the assembly areas ( 12 ) at the two rivets of the upper base ( 10 ), wherein the coupling bearing ( 34 ) further by means of two connection plates 39 each with connection openings 132 two brake discs ( 13 ) is coupled and coupled, wherein the coupling bearing ( 34 ) by means of the two connection plates ( 39 ) each to the brake discs ( 13 ) is coupled, wherein the second and the third spring ( 36 . 37 ) on the upper surface of the coupling bearing ( 34 ), wherein in the middle of the upper surface of the coupling bearing ( 34 ) a support projection ( 342 ) is arranged; A control unit ( 40 ), which has a mounting cylinder ( 41 ), whose one side end together with a bearing element ( 411 ) in the mounting cavity ( 14 ) of the upper base ( 10 ) is installed and the other end of an annular groove ( 413 ), wherein on two opposite sides of the annular groove ( 413 ) each have a threaded hole ( 414 ) is arranged, wherein the mounting cylinder ( 41 ) a bolt hole ( 415 ), through which a spindle ( 42 ) is guided through, wherein at one end of the spindle ( 42 ) a non-cylindrical mounting end ( 421 ) is formed, wherein the spindle ( 42 ) through the mounting hole ( 317 ) of the brake body ( 31 ) is guided through and so forms a coupling, wherein on the other end of the spindle ( 42 ) a spring element ( 422 ) is inserted, wherein at the end of the mounting cylinder ( 41 ) a connecting element ( 43 ), on the end portion of which a fastening piece ( 44 ), which has a recess ( 441 ) into which a pin ( 45 ), whereby the surface of the pen ( 45 ) from the recess ( 441 ) protrudes; and - an aluminum control rod ( 50 ), the two housings ( 51 ), which in the assembled state, the control unit ( 40 ), wherein by the upper end portion of the aluminum control rod ( 50 ) a hole ( 52 ) transversely, wherein in the interior of the aluminum control rod ( 50 ) a receiving chamber ( 53 ) is formed, at whose upper end a protruding locking end ( 531 ) is arranged, wherein in the receiving chamber ( 53 ) an actuator ( 54 ) is installed, through the middle of a non-circular control port ( 541 ), wherein at the outer edge of the actuating element ( 54 ) a trough ( 542 ) is arranged concavely, at which the pin ( 45 ) supported on both sides of the trough ( 542 ) each a direction-determining supernatant ( 543 ) and a brake supernatant ( 544 ) are arranged, wherein between the directional supernatant ( 543 ) and the trough ( 542 ) further comprises a direction-detecting recess ( 545 ) is arranged. Castor according to claim 1, characterized in that in accordance with the two connection plates ( 39 ) an opening ( 112 ) and a middle hole ( 113 ) through the central partition ( 11 ) of the upper base ( 10 ), so that the coupling bearing ( 34 ) when connecting to the brake discs ( 13 ) by means of the two connection plates ( 39 ) through the opening ( 112 ), wherein the two connection plates ( 39 ) through the middle hole ( 113 ) in combination with a center bolt ( 114 ) are connected and constrained to form a pivot center. Castor according to claim 1, characterized in that on the upper end face of the support member ( 24 ) Boundary ribs ( 241 ) are arranged and from the lower end face of the same a swivel connection ( 242 protruding). Castor according to claim 3, characterized in that a journal opening ( 15 ) according to the swivel connection ( 242 ) of the supporting part ( 24 ) through the upper base ( 10 ), wherein with the journal opening ( 15 ) a pin ( 151 ) is pivotally connected, with the axis as the lower base ( 20 ) mounted pivotally upwards and by latching with the upper base ( 10 ) is firmly connected. Castor according to claim 1, characterized in that at one of the axle hole ( 111 ) of the upper base ( 10 ) corresponding location on the wall of the brake disc ( 13 ) a through hole ( 133 ) is trained. Castor according to claim 1, characterized in that between the head end ( 311 ) and the protruding rib ( 312 ) of the brake body ( 31 ) a positioning supernatant ( 313 ) is formed extended. Castor according to claim 1, characterized in that on the mounting cavity ( 14 ) further a support side wall ( 142 ), at which the direction-determining sprocket ( 32 ) and the brake sprocket ( 33 ) and so limited, and that on the inner wall of the mounting cavity ( 14 ) a limit supernatant ( 143 ) according to the bearing element ( 411 ) of the mounting cylinder ( 41 ) is formed to effect positioning. Castor according to claim 1, characterized in that the second spring ( 36 ) is finer and longer than the third spring ( 37 ), so that the second spring ( 36 ) through the passage opening ( 331 ) of the brake sprocket ( 33 ) and between the direction-determining sprocket ( 32 ) and the coupling bearing ( 34 ), wherein the direction-determining sprocket ( 32 ) by the second spring ( 36 ) is pressed so that it is relatively floating in the brake sprocket ( 33 ) as high as the ratchet teeth ( 333 ) is arranged. Castor according to claim 1, characterized in that after installation of the mounting cylinder ( 41 ) in the mounting cavity ( 14 ) of the upper base ( 10 ) a riveting supernatant ( 412 ) at the end part of the mounting cylinder ( 41 ) is riveted by punching to the connection of the mounting cylinder ( 41 ) in the mounting cavity ( 14 ) to reinforce. Castor according to claim 1, characterized in that on the two housings ( 51 ) each have a latching projection ( 511 ) according to the annular groove ( 413 ) of the mounting cylinder ( 41 ), wherein a screw element ( 512 ) on the locking projection ( 511 ) can be screwed.

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