Trundle with brake

Abstract

The utility model discloses a trundle with a brake, which comprises a trundle seat, a rotating part, a first brake part, a first reset structure and a brake part, and the rotating part is rotatably mounted on the trundle seat; the first braking piece is arranged on the wheel seat in a sliding mode, one of the rotating piece and the first braking piece is provided with at least one first clamping groove, and the other one is provided with a first clamping part used for being matched with the first clamping groove; the first reset structure is arranged between the first brake part and the wheel seat; the brake part is movably installed on the wheel seat and connected with a first limiting part, the first limiting part is matched with the first brake part in an abutting mode to limit the first brake part to move towards the first position, and the first limiting part can push the first brake part to move from the first position to the second position along with movement of the brake part. According to the trundle with the braking function, braking can be successful only by operating the braking piece once during braking, the braking success rate is higher, repeated operation of the braking piece is omitted, and braking is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a trundle technology field, especially a trundle with brake. BACKGROUND

[0002] Now the most common way of carrying articles and moving articles is to set trundles on the bottom of the articles, through the trundles, the articles can be moved more conveniently. The existing trundle comprises a wheel seat, a brake part, a transmission part, a brake part and a rotating part rotatably installed on the wheel seat, the brake part is slidably installed on the wheel seat, the brake part is slidably installed on the wheel seat, the brake part is connected to the brake part through the transmission part, the rotating part is provided with a plurality of clamping grooves around its axis, when the brake is needed, the brake part can be slid to the direction of the brake to drive the brake part to clamp into the clamping groove, thereby limiting the rotation of the rotating part relative to the wheel seat, when the brake is removed, the brake part is slid to the opposite direction to drive the brake part to disengage from the clamping groove. The existing trundle, when the brake part is slid to brake, the rotating part needs to be rotated to the appropriate position relative to the wheel seat to make the clamping groove correspond to the brake part, so as to ensure that the brake part is smoothly clamped into the clamping groove, but the actual brake usually appears the situation that the clamping groove is misaligned to cause the wall of the clamping groove and the brake part to abut and interfere, in this case, the brake part cannot be smoothly clamped into the clamping groove to realize the brake, that is, the existing trundle has the situation that the brake is unsuccessful, which leads to the need to try to brake many times. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the prior art. Therefore, the utility model provides a trundle with brake, which can be successfully braked only by operating the brake part once when braking, has higher brake success rate, saves repeated operation of the brake part and is more convenient to brake.

[0004] The castor with brake according to the embodiment of the utility model, at least has following beneficial effect: the castor with brake provided by the utility model, when braking is needed, the brake member can be operated to drive the first limiting member to move, so that the first limiting member allows the first brake member to move to the first position, and then the first reset structure can drive the first brake member to move to the first position, wherein, if one of the first clamping grooves is aligned with the first clamping part, the first reset structure can drive the first brake member to move to the first position so that the first clamping part is clamped in one of the first clamping grooves to brake the rotating member, if the first clamping part is misaligned with all the first clamping grooves, the first reset structure can first drive the first clamping part to abut against the side wall of one of the first clamping grooves, and then only needs to wait for the rotating member to continue to rotate through a certain angle so that the first clamping groove is aligned with the first clamping part, and the first reset structure can continue to push the first clamping part into the first clamping groove to brake the rotating member, thus, when the brake member is operated to brake, whether the first clamping groove is aligned with the first clamping part or not, the first clamping part can finally be successfully clamped in one of the first clamping grooves to brake under the action of the first reset structure, without repeated operation of the brake member, the braking is more convenient, the success rate of braking is higher, and when the brake needs to be released, only needs to operate the brake member in the reverse direction to drive the first limiting member to move the first brake member from the first position to the second position, so that the first clamping part is separated from the first clamping groove to release the brake.

[0005] The castor with brake according to the embodiment of the utility model, at least has following beneficial effect: the castor with brake provided by the utility model, when braking is needed, the brake member can be operated to drive the first limiting member to move, so that the first limiting member allows the first brake member to move to the first position, and then the first reset structure can drive the first brake member to move to the first position, wherein, if one of the first clamping grooves is aligned with the first clamping part, the first reset structure can drive the first brake member to move to the first position so that the first clamping part is clamped in one of the first clamping grooves to brake the rotating member, if the first clamping part is misaligned with all the first clamping grooves, the first reset structure can first drive the first clamping part to abut against the side wall of one of the first clamping grooves, and then only needs to wait for the rotating member to continue to rotate through a certain angle so that the first clamping groove is aligned with the first clamping part, and the first reset structure can continue to push the first clamping part into the first clamping groove to brake the rotating member, thus, when the brake member is operated to brake, whether the first clamping groove is aligned with the first clamping part or not, the first clamping part can finally be successfully clamped in one of the first clamping grooves to brake under the action of the first reset structure, without repeated operation of the brake member, the braking is more convenient, the success rate of braking is higher, and when the brake needs to be released, only needs to operate the brake member in the reverse direction to drive the first limiting member to move the first brake member from the first position to the second position, so that the first clamping part is separated from the first clamping groove to release the brake.

[0006] According to some embodiments of the utility model, the first clamping part is arranged on the first brake part, the first clamping groove is located on the side of the first brake part close to the rotation axis of the rotating part, wherein a first guide structure is arranged between the wheel seat and the first brake part, and the guide direction of the first guide structure and the driving direction of the first reset structure are both along the radial direction of the rotating part.

[0007] According to some embodiments of the utility model, the first reset structure comprises an elastic reset part, which is arranged between the first brake part and the wheel seat, or the first reset structure comprises two magnets, one of which is arranged on the wheel seat and the other is arranged on the first brake part, and the two magnets cooperate to generate a magnetic force to drive the first brake part to move from the second position to the first position.

[0008] According to some embodiments of the utility model, the brake part is in sliding fit with the outer circumferential surface of the wheel seat.

[0009] According to some embodiments of the utility model, one end of the first limiting part is rotationally connected with the brake part, and the other end is provided with a first slot, the extension direction of the first slot is consistent with the driving direction of the first reset structure, the first brake part is inserted into the first slot and can slide relative to the first limiting part along the first slot.

[0010] According to some embodiments of the utility model, a second slot is arranged on the brake part, one end of the first limiting part is connected with a first rotating shaft, the first rotating shaft is rotatably inserted into the second slot, and the first rotating shaft can slide along the second slot.

[0011] According to some embodiments of the utility model, the wheel seat is rotationally provided with an external connecting part for external connection, the rotation axis of the external connecting part is arranged at an angle with the rotation axis of the rotating part, a universal brake structure is arranged between the external connecting part and the wheel seat, and the universal brake structure is used for braking the relative rotation between the external connecting part and the wheel seat.

[0012] According to some embodiments of the utility model, the brake part is in transmission fit with the universal brake structure, so that the brake part can control the first brake part and the universal brake structure to be synchronously braked or synchronously unbraked.

[0013] According to some embodiments of the utility model, the universal brake structure includes second brake piece, second reset structure and second limit piece, the second brake piece is slidably installed in the wheel seat, one of the second brake piece and the outer connecting piece is provided with a plurality of second clamping grooves which are arranged circumferentially around the rotation axis of the outer connecting piece, the other is provided with a second clamping part for cooperating with the second clamping groove, the second limit piece is connected with the brake piece, the second brake piece has third position and fourth position, when the second brake piece moves to the third position, the second clamping part is clamped in one of the second clamping grooves, when the second brake piece moves to the fourth position, the second clamping part is separated from any one of the second clamping grooves, wherein, the second reset structure is arranged between the second limit piece and the second brake piece, the second limit piece and the second brake piece abut to limit the second brake piece from moving to the third position, and the second limit piece can push the second brake piece from the third position to the fourth position along with the activity of the brake piece or allow the second reset structure to drive the second brake piece to move to the third position.

[0014] According to some embodiments of the utility model, the second clamping groove is arranged on the outer connecting piece, the second clamping part is arranged on one end of the second brake piece, the second clamping part and the second clamping groove are distributed along the rotation axis of the outer connecting piece, the second guide structure is arranged between the second brake piece and the wheel seat, the guide direction of the second guide structure and the driving direction of the second reset structure are arranged along the rotation axis of the outer connecting piece, wherein, one end of the second limit piece is rotationally connected with the brake piece, the other end is provided with a third slot, the second brake piece is arranged in the third slot, the second brake piece is provided with an abutting part, the abutting part is located on the side of the third slot away from the second clamping groove and abuts with the side wall of the third slot.

[0015] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0017] Figure 1 It is an exploded view of the brake-equipped caster of the utility model embodiment;

[0018] Figure 2 It is Figure 1 It is an internal schematic view of the brake-equipped caster (when the brake is released);

[0019] Figure 3 for Figure 1 the internal schematic view of the caster with brake (when braking) is shown;

[0020] Figure 4 for Figure 3 the cross-sectional view of the caster with brake at the first brake member is shown;

[0021] Figure 5 for Figure 1 the exploded view between the brake components of the caster with brake is shown;

[0022] Figure 6 for Figure 1 the external schematic view of the caster with brake is shown.

[0023] Reference signs:

[0024] wheel seat 100, guide groove 110, rotating member 200, first clamping groove 210, first brake member 300, first clamping portion 310, guide portion 320, first reset structure 400, brake member 510, second strip-shaped hole 511, footrest portion 512, second rotating shaft 513, first limiting member 520, first strip-shaped hole 521, first rotating shaft 522, external connecting member 600, second clamping groove 610, universal brake structure 700, second brake member 710, second clamping portion 711, abutting portion 712, second reset structure 720, second limiting member 730, third strip-shaped hole 731, fourth strip-shaped hole 732. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] In the description of the utility model, if several meanings are one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described to the first, the second is only used for distinguishing the purpose of technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0028] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood in a broad sense, and the person skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0029] Referring to Figures 1 to 3 According to the embodiment of the utility model, the wheel with brake includes wheel seat 100, rotating part 200, first brake 300, first reset structure 400 and brake piece 510, rotating part 200 is rotatably installed in wheel seat 100;First brake 300 is slidably arranged in wheel seat 100, and one of rotating part 200 and first brake 300 is provided with first clamping groove 210, and the other is provided with first clamping portion 310 for cooperating with first clamping groove 210, wherein first brake 300 has first position and second position, when first brake 300 moves to first position, first clamping portion 310 is clamped in one of first clamping groove 210, when first brake 300 moves to second position, first clamping portion 310 is separated from any one of first clamping groove 210;Brake piece 510 is movably installed in wheel seat 100, brake piece 510 is connected with first limiting piece 520, and first limiting piece 520 is in abutting cooperation with first brake 300 to limit the movement of first brake 300 to first position;First reset structure 400 is arranged between first brake 300 and wheel seat 100 or between first brake 300 and first limiting piece 520, and first reset structure 400 is used to drive first brake 300 to move from second position to first position;Wherein, first limiting piece 520 can push first brake 300 to move from first position to second position along with the movement of brake piece 510 or cooperate with first reset structure 400 to drive first brake 300 to move to first position.

[0030] The brake wheel with brake provided by the utility model can be braked by operating the brake piece 510 during the rotation of the rotating piece 200, and the braking can be successful.

[0031] Through the above setting, the brake wheel with brake provided by the utility model can be braked by operating the brake piece 510 during the rotation of the rotating piece 200, and the braking can be successful.

[0032] With reference to Figures 3 to 5 According to some embodiments of the utility model, the first clamping part 310 is arranged on the first brake piece 300, and the first clamping groove 210 is located on the side of the first brake piece 300 close to the rotation axis of the rotating piece 200, wherein a first guide structure is arranged between the wheel seat 100 and the first brake piece 300, the guide direction of the first guide structure and the driving direction of the first reset structure 400 are both along the radial direction of the rotating piece 200, so that under the guide action of the first guide structure on the first brake piece 300, the first reset structure 400 can more flexibly and stably drive the first brake piece 300 to move from the second position to the first position.

[0033] With reference to Figure 1 , Figure 4 and Figure 5In the above embodiment, two rotating members 200 can be provided, and the wheel seat 100 is located between the two rotating members 200. The two rotating members 200 can be fixedly connected to rotate synchronously, and in this case, the two rotating members 200 can be simultaneously provided with the first clamping groove 210, and the first brake member 300 has two first clamping portions 310. Alternatively, one of the two rotating members 200 is provided with the first clamping groove 210, and the first brake member 300 can have only one first clamping portion 310. Of course, the two rotating members 200 can also rotate asynchronously, and in this case, the two rotating members 200 are simultaneously provided with the first clamping groove 210, and the first brake member 300 has two first clamping portions 310 to brake the two rotating members 200.

[0034] With reference to Figure 3 And Figure 5 In the specific implementation process, the first guide structure can include a guide groove 110 provided on the wheel seat 100 and a guide portion 320 provided on the first brake member 300. The guide groove 110 is arranged along the radial direction of the rotating member 200, the first brake member 300 is arranged in the guide groove 110, and the guide portion 320 is slidably mounted in the guide groove 110. The opposite sides of the guide portion 320 are parallel to each other and correspondingly fit the opposite side walls of the guide groove 110. Thus, through the cooperation of the guide portion 320 and the guide groove 110, the first brake member 300 can slide more stably.

[0035] Of course, the first guide structure can also be arranged in other ways. For example, the first guide structure can include a guide column and a guide hole provided on the first brake member 300. The guide column is arranged along the radial direction of the rotating member 200, and the guide column is inserted into the guide hole. Under the cooperation of the guide column and the guide hole, the first brake member 300 can slide along the guide column.

[0036] In the specific implementation process, only one first clamping groove 210 can be provided, and in the braking process, the first clamping portion 310 can be pushed into the first clamping groove 210 through the first reset structure 400 only after the rotating member 200 rotates by a certain angle to align the first clamping groove 210 with the first brake member 300. With reference to Figure 1 And Figure 4 The first clamping groove 210 can also be arranged in two or more and distributed circumferentially around the axis of the rotating member 200. Thus, with the rotation of the rotating member 200, each first clamping groove 210 can be aligned with the first clamping portion 310 in turn. It is not difficult to imagine that with the increase in the number of first clamping grooves 210, the rotating member 200 only needs to rotate by a smaller angle to align one of the first clamping grooves 210 with the first clamping portion 310, thereby improving the braking efficiency.

[0037] It can be conceived that in other embodiments, the rotating member 200 is provided, and the first brake member 300 can be configured to be slidingly mounted along the rotation axis of the rotating member 200 to the wheel seat 100, at this time, the first clamping portion 310 can be provided on the first brake member 300, the first clamping groove 210 is provided on the rotating member 200, and the first reset structure 400 is used to drive the first brake member 300 to slide along the rotation axis of the rotating member 200; or the first clamping portion 310 can be provided on the rotating member 200, in order to improve the braking speed, the first brake member 300 is annularly arranged around the rotation axis of the rotating member 200, the first clamping groove 210 can be provided in plurality on the first brake member 300 and circumferentially arranged around the axis of the rotating member 200, the first clamping portion 310 can also be provided in plurality and circumferentially arranged around the axis of the rotating member 200, and the first reset structure 400 is used to drive the first brake member 300 to slide along the rotation axis of the rotating member 200.

[0038] With reference to Figure 2 and Figure 5 , according to some embodiments of the present application, the first reset structure 400 comprises an elastic reset member, which is provided between the first brake member 300 and the wheel seat 100, and the elastic reset member can be provided as a spring or an elastic pull rope, etc., which can provide an elastic force to drive the first brake member 300 to move to the first position.

[0039] It can be conceived that in other embodiments, the first reset structure 400 can also comprise two magnets, one of which is mounted on the wheel seat 100 and the other of which is mounted on the first brake member 300, and the two magnets can cooperate to generate a magnetic force to drive the first brake member 300 to move from the second position to the first position. Among them, the two magnets can be used to generate a repulsive magnetic force to drive the first brake member 300 to move from the second position to the first position, or the two magnets can be used to generate an attractive magnetic force to drive the first brake member 300 to move from the second position to the first position.

[0040] With reference to Figure 1 , Figure 2 and Figure 6 , according to some embodiments of the present application, the brake member 510 is slidingly matched with the outer circumferential surface of the wheel seat 100, and by using the above arrangement, the brake member 510 can slide along the outer circumferential surface of the wheel seat 100, and the gap between the brake member 510 and the wheel seat 100 does not change in this process, effectively reducing the entry of foreign matters from the gap between the brake member 510 and the wheel seat 100 into the wheel seat 100. In order to facilitate the operation of the brake member 510, the brake member 510 is connected with a foot pedal 512, so that the user can brake by stepping on the brake member 510 with the foot, and the use is more convenient.

[0041] With reference to Figure 2 andFigure 5 According to some embodiments of the present application, one end of the first limiting piece 520 is rotatably connected with the brake piece 510, and the other end is provided with a first slot hole 521, the extension direction of the first slot hole 521 is consistent with the driving direction of the first reset structure 400, and the first brake piece 300 is inserted into the first slot hole 521 and can slide relative to the first limiting piece 520 along the first slot hole 521. With the above arrangement, when the first limiting piece 520 does not move, the first brake piece 300 can always abut the inner wall of one side of the first slot hole 521 under the action of the first reset structure 400. Therefore, during braking, the first limiting piece 520 is moved by the brake piece 510, so that one end of the first limiting piece 520 provided with the first slot hole 521 can move along the driving direction of the first reset structure 400. Thus, the first reset structure 400 can drive the first brake piece 300 to move from the second position to the first position. When the brake is released, the brake piece 510 is reversely operated to move the first limiting piece 520, so that the inner wall of the first slot hole 521 pushes the first brake piece 300 to move from the first position to the second position. Through the arrangement of the first slot hole 521, the first limiting piece 520 and the first brake piece 300 can be kept in a matching relationship.

[0042] Referring to Figure 2 and Figure 5 According to some embodiments of the present application, the brake piece 510 is provided with a second slot hole 511, one end of the first limiting piece 520 is connected with a first rotating shaft 522, the first rotating shaft 522 is rotatably inserted into the second slot hole 511, and the first rotating shaft 522 can slide along the second slot hole 511. Therefore, during braking, when the brake piece 510 is slid, the brake piece 510 can first slide a distance, and then the first limiting piece 520 is moved when the inner wall of one side of the second slot hole 511 abuts against the first rotating shaft 522. Similarly, during the release of the brake, the brake piece 510 can reversely slide a distance, and then the first limiting piece 520 is moved when the inner wall of the other side of the second slot hole 511 abuts against the first rotating shaft 522. With the above arrangement, the stroke of the first limiting piece 520 can be reduced while keeping the stroke of the brake piece 510 unchanged, and the installation space required by the first limiting piece 520 is reduced. In addition, compared with the mode that the brake piece 510 drives the first limiting piece 520 to move at the initial stage of sliding, the brake piece 510 can first slide a stroke alone and then drive the first limiting piece 520 to move during braking or release of the brake, thereby reducing the resistance received by the brake piece 510 at the initial stage of sliding, making it more labor-saving and convenient to slide the brake piece 510.

[0043] It can be imagined that in other embodiments, the first limiting piece 520 can also be fixedly connected with the brake piece 510, wherein the first limiting piece 520 is located on the side of the first brake piece 300 close to the rotation axis of the rotating piece 200, and the distance between the first limiting piece 520 and the rotation axis of the rotating piece 200 gradually increases in the direction from close to the brake piece 510 to close to the first brake piece 300. Thus, when the brake piece 510 slides away from the first brake piece 300, the position of the first limiting piece 520 abutting against the first brake piece 300 gradually approaches the rotation axis of the rotating piece 200, thereby allowing the first brake piece 300 to move to the first position to realize braking. When the brake piece 510 slides close to the first brake piece 300, the position of the first limiting piece 520 abutting against the first brake piece 300 gradually moves away from the rotation axis of the rotating piece 200, thereby pushing the first brake piece 300 from the first position to the second position.

[0044] With reference to Figure 1 and Figure 2 , according to some embodiments of the present application, the wheel seat 100 is rotationally installed with an external connecting piece 600 for external connection, and the caster wheel can be connected and fixed on the frame of the trolley or the shell of other articles or other external articles through the external connecting piece 600. The rotation axis of the external connecting piece 600 is arranged at an angle with the rotation axis of the rotating piece 200, so that the rotating piece 200 can rotate omnidirectionally relative to the external connecting piece 600, thereby adjusting the walking direction of the caster wheel.

[0045] With reference to Figure 2 , Figure 3 and Figure 5 , wherein the universal brake structure 700 is arranged between the external connecting piece 600 and the wheel seat 100, and is used to brake the relative rotation between the external connecting piece 600 and the wheel seat 100.

[0046] With reference to Figure 2 , Figure 3 and Figure 5 , according to some embodiments of the present application, the brake piece 510 and the universal brake structure 700 are in transmission cooperation, so that the brake piece 510 can control the first brake piece 300 and the universal brake structure 700 to brake synchronously or to be released from braking synchronously. Thus, only by operating the brake piece 510, the first brake piece 300 and the universal brake structure 700 can be controlled to brake synchronously or to be released from braking synchronously, realizing the double brake function, without the need to control the braking of the first brake piece 300 and the universal brake structure 700 separately, and the use is more convenient.

[0047] With reference to Figure 2 , Figure 3 and Figure 5According to some embodiments of the utility model, the universal brake structure 700 includes a second brake piece 710, a second reset structure 720 and a second limiting piece 730. The second brake piece 710 is slidably installed on the wheel seat 100. One of the second brake piece 710 and the outer connecting piece 600 is provided with a plurality of second clamping grooves 610 arranged circumferentially around the rotation axis of the outer connecting piece 600. The other is provided with a second clamping part 711 for cooperating with the second clamping groove 610. The second limiting piece 730 is connected with the brake piece 510. The second brake piece 710 has a third position and a fourth position. When the second brake piece 710 moves to the third position, the second clamping part 711 is clamped in one of the second clamping grooves 610. When the second brake piece 710 moves to the fourth position, the second clamping part 711 is separated from any one of the second clamping grooves 610. The second reset structure 720 is arranged between the second limiting piece 730 and the second brake piece 710. The second limiting piece 730 and the second brake piece 710 abut to limit the movement of the second brake piece 710 to the third position. The second limiting piece 730 can push the second brake piece 710 to move from the third position to the fourth position with the movement of the brake piece 510 or allow the second reset structure 720 to drive the second brake piece 710 to move to the third position. The working principle of the second brake piece 710 is similar to that of the first brake piece 300. Therefore, when operating the brake piece 510 to brake, whether the second clamping groove 610 and the second clamping part 711 are aligned or not, the second clamping part 711 can be successfully clamped in one of the second clamping grooves 610 to brake under the action of the second reset structure 720, without the need to repeatedly operate the brake piece 510. With the above arrangement, when operating the brake piece 510 to brake, the first brake piece 300 and the second brake piece 710 can be controlled to brake simultaneously. When operating the brake piece 510 in reverse to release the brake, the first brake piece 300 and the second brake piece 710 can be controlled to release the brake simultaneously.

[0048] Since the second reset structure 720 is arranged between the second limiting piece 730 and the second brake piece 710, the second reset structure 720 can exert a reverse force on the second limiting piece 730 to assist the reverse sliding of the brake piece 510 when releasing the brake. Thus, it is more labor-saving to operate the brake piece 510 to release the brake.

[0049] Referring to Figure 2 , Figure 3 and Figure 5According to some embodiments of the utility model, second clamping groove 610 is arranged on outer connecting piece 600, second clamping part 711 is arranged on one end of second brake piece 710, second clamping part 711 and second clamping groove 610 are distributed along the rotation axis of outer connecting piece 600, second guiding structure is arranged between second brake piece 710 and wheel seat 100, the guiding direction of second guiding structure and the driving direction of second reset structure 720 are arranged along the rotation axis of outer connecting piece 600, wherein, second limiting piece 730 is rotatably installed on wheel seat 100, one end of second limiting piece 730 is rotatably connected with brake piece 510, the other end is provided with third slot hole 731, second brake piece 710 is arranged in third slot hole 731, second brake piece 710 is provided with abutting part 712, abutting part 712 is located on the side of third slot hole 731 away from second clamping groove 610 and is in abutting cooperation with the side wall of third slot hole 731, wherein, third slot hole 731 extends along the direction of the rotation axis from second brake piece 710 to second limiting piece 730. Thus, in the process of operating brake piece 510 to brake, the movement track of the other end of second limiting piece 730 is different from the movement track of second brake piece 710, by the arrangement of third slot hole 731, there is a relative movement space between second brake piece 710 and the other end of second limiting piece 730, so that when one end of second limiting piece 730 is moved by brake piece 510, the other end of second limiting piece 730 can move towards second clamping groove 610, so that second limiting piece 730 no longer limits second brake piece 710 at the fourth position, so that second reset structure 720 can drive second brake piece 710 to move to the third position, then when one of second clamping groove 610 and second clamping part 711 is aligned, second clamping part 711 can be clamped into second clamping groove 610 under the action of second reset structure 720, realizing successful braking of outer connecting piece 600.

[0050] Referring to Figure 2 and Figure 5 , second reset structure 720 can be reset spring, reset spring is located on the side of third slot hole 731 close to outer connecting piece 600, reset spring is sleeved on second brake piece 710, one end of reset spring abuts against second brake piece 710, the other end abuts against the side wall of third slot hole 731, thus, in the process of operating brake piece 510 to brake, the other end of second limiting piece 730 moves towards second clamping groove 610 to compress reset spring, and then reset spring pushes second brake piece 710 to move to the third position.

[0051] Second reset structure 720 can also adopt other setting modes, which can refer to the setting mode of first reset structure 400, which is not described in detail here.

[0052] Second guiding structure can refer to the setting mode of first guiding structure, which is not described in detail here.

[0053] With reference to Figure 2 And Figure 3 In some embodiments, the second limiting member 730 is provided with a fourth slot-shaped hole 732, one end of the brake member 510 is connected with a second rotating shaft 513, the second rotating shaft 513 is rotatably inserted into the fourth slot-shaped hole 732, and the second rotating shaft 513 can slide along the fourth slot-shaped hole 732, and the second limiting member 730 is circumferentially slidably installed on the wheel seat 100. With the above arrangement, the stroke of the second limiting member 730 can be reduced while keeping the stroke of the brake member 510 unchanged, and the installation space required by the second limiting member 730 is reduced. In addition, compared with the mode in which the brake member 510 drives the second limiting member 730 to move at the beginning of sliding, the brake member 510 can first slide alone for a stroke and then drive the second limiting member 730 to move during braking or unbraking, thereby reducing the resistance received by the brake member 510 at the beginning of sliding, making it more labor-saving and convenient to operate the brake member 510 to slide.

[0054] With reference to Figure 5 And Figure 2 Figure 3 Figure 5 Figure 2 Figure 3 Figure 5 Figure 2 Figure 3 Figure 5 Figure 2 Figure 3 Figure 5 Figure 2 Figure 3 Figure 5 Figure 2 Figure 3 Figure 5 Figure 2 Figure 3 Figure 5 Figure 2 Figure 3 Figure 5 Figure 2 Figure 3 Figure 5 In the embodiments given above, when braking, the brake member 510 drives the first limiting member 520 and the second limiting member 730 to move in the clockwise direction, so that the caster wheel enters the braking state from the unbraking state. When unbraking, the brake member 510 can drive the first limiting member 520 and the second limiting member 730 to move in the counterclockwise direction, so that the caster wheel enters the unbraking state from the braking state.

[0055] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0056] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present application.

Claims

1. A castor with brake, characterized in that The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake.

2. The castor with brake according to claim 1, characterized in that The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake.

4. The castor wheel with brake according to claim 1, characterized in that The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a brake. The application relates to a caster with a 5. The castor wheel with brake according to claim 1, characterized in that One end of the first limiting piece (520) is rotationally connected with the brake piece (510), and the other end is provided with a first slot (521), the extension direction of the first slot (521) is consistent with the driving direction of the first reset structure (400), the first brake piece (300) is inserted into the first slot (521) and can slide along the first slot (521) relative to the first limiting piece (520).

6. The castor according to claim 5, characterized in that The brake piece (510) is provided with a second slot (511), one end of the first limiting piece (520) is connected with a first rotating shaft (522), the first rotating shaft (522) is rotatably inserted into the second slot (511), and the first rotating shaft (522) can slide along the second slot (511).

7. The castor with brake according to claim 1, characterized in that The wheel seat (100) is rotationally mounted with an external connecting piece (600) for external connection, the rotating axis of the external connecting piece (600) is arranged at an angle with the rotating axis of the rotating piece (200), a universal brake structure (700) is arranged between the external connecting piece (600) and the wheel seat (100), and the universal brake structure (700) is used for braking the relative rotation between the external connecting piece (600) and the wheel seat (100).

8. The castor with brake according to claim 7, characterized in that The brake piece (510) is in transmission cooperation with the universal brake structure (700), so that the brake piece (510) can control the first brake piece (300) and the universal brake structure (700) to be synchronously braked or synchronously unbraked.

9. The castor with brake according to claim 8, characterized in that The universal brake structure (700) comprises a second brake member (710), a second reset structure (720) and a second limiting member (730), the second brake member (710) is slidably installed on the wheel seat (100), one of the second brake member (710) and the outer connecting member (600) is provided with a plurality of second clamping grooves (610) arranged circumferentially around the rotation axis of the outer connecting member (600), and the other is provided with a second clamping portion (711) matched with the second clamping groove (610), the second limiting member (730) is connected with the brake member (510), the second brake member (710) has a third position and a fourth position, when the second brake member (710) moves to the third position, the second clamping portion (711) is clamped in one of the second clamping grooves (610), when the second brake member (710) moves to the fourth position, the second clamping portion (711) is separated from any one of the second clamping grooves (610), wherein the second reset structure (720) is arranged between the second limiting member (730) and the second brake member (710), the second limiting member (730) and the second brake member (710) abut to limit the movement of the second brake member (710) to the third position, and the second limiting member (730) can push the second brake member (710) to move from the third position to the fourth position with the activity of the brake member (510) or allow the second reset structure (720) to drive the second brake member (710) to move to the third position.

10. The castor wheel with brake according to claim 9, characterized in that The second clamping groove (610) is arranged on the outer connecting member (600), the second clamping portion (711) is arranged on one end of the second brake member (710), the second clamping portion (711) and the second clamping groove (610) are distributed along the rotation axis of the outer connecting member (600), a second guide structure is arranged between the second brake member (710) and the wheel seat (100), the guide direction of the second guide structure and the driving direction of the second reset structure (720) are arranged along the rotation axis of the outer connecting member (600), wherein one end of the second limiting member (730) is rotationally connected with the brake member (510), the other end is provided with a third slot (731), the second brake member (710) is arranged in the third slot (731), the second brake member (710) is provided with an abutting portion (712), the abutting portion (712) is located on the side of the third slot (731) away from the second clamping groove (610) and abuts with the side wall of the third slot (731).

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