CN219806669U

CN219806669U - Caster with stopping function

Info

Publication number: CN219806669U
Application number: CN202321050256.4U
Authority: CN
Inventors: 陈建道
Original assignee: Wenzhou Linian Luggage Accessories Co ltd
Current assignee: Wenzhou Linian Luggage Accessories Co ltd
Priority date: 2023-05-03
Filing date: 2023-05-03
Publication date: 2023-10-10
Anticipated expiration: 2033-05-03

Abstract

The utility model relates to a castor with a stopping function, which comprises a wheel frame, wheels and a stopping mechanism, wherein the stopping mechanism comprises a sliding locking piece, a return spring and an operating member, the sliding locking piece is slidably arranged on the wheel frame along the radial direction of the wheels, the return spring provides driving force required for driving the sliding locking piece to slide towards the direction of unlocking the wheels, the operating member comprises a stepping piece and a locking piece, the stepping piece is slidably matched on the wheel frame, the sliding locking piece slides to a locking position of the locking wheel through the pressing of the stepping piece, the locking piece is arranged on the wheel frame in a swinging way, the locking piece is provided with a lock head, the lock head is matched with a locking part which synchronously slides along with the sliding locking piece, the locking piece is provided with an elastomer which drives the locking piece to be kept at a locking position, and in the locking position, the lock head of the locking piece is in locking fit with the locking part which follows the sliding locking piece, and the locking piece is provided with a stepping unlocking end which is used for operating the locking piece to swing to release the locking of the locking part. Has the advantage of convenient operation.

Description

Caster with stopping function

Technical Field

The present utility model relates to casters.

Background

Casters can improve the convenience of movement of objects to be handled, and thus find application in a variety of devices such as carts, suitcases, cabinets, strollers, and the like. In addition, casters are also provided with stop mechanisms to meet the residence requirements of the apparatus.

The casters are mounted on the bottom of the apparatus as ground supporting members of the apparatus, so that the locking and unlocking operations of the casters are facilitated by pedaling. However, the existing casters with stopping function, such as the case roller assembly with brake disclosed in the application number CN201720537053.6, have the defect of inconvenient operation because the operating member of the stopping mechanism is a knob which is pivotally arranged on the wheel frame and can be controlled to lock and unlock the wheels by driving the knob to swing along different directions.

Disclosure of Invention

The utility model aims at: in order to overcome the defects in the prior art, the utility model provides the caster with the stopping function, which is convenient to operate.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a take truckle of locking function, includes wheel carrier, wheel and stop mechanism, and the wheel is installed on the wheel carrier through the shaft, stop mechanism includes slip locking piece, reset spring and the operating member that is used for locking and unblock to the wheel, and slip locking piece is along the setting of wheel radial direction slidable on the wheel carrier, and reset spring provides the required driving force of drive slip locking piece to unblock wheel direction slip, its characterized in that: the operation component comprises a stamping part and a locking piece, the stamping part is in sliding fit on the wheel frame, the sliding locking piece is pushed by the stamping part to slide to a locking position of the locking wheel, the locking piece is arranged on the wheel frame in a swinging mode, the locking piece is provided with a lock head, the lock head is matched with a locking part which slides synchronously along with the sliding locking piece, the locking piece is provided with an elastomer which drives the locking piece to tend to be kept at a locking falling position, the locking piece is in locking fit with the locking part which enters the locking position along with the sliding locking piece, and the locking piece is provided with a stepping unlocking end which is used for operating the locking piece to swing to release locking of the locking part.

By adopting the technical scheme, the stamping part is stamped, the stamping part pushes the sliding locking piece to slide and enter the locking position, namely the wheel is stopped, in the process, the locking part contacts the lock head to enable the locking part to swing, the locking part passes over the lock head, the locking part is reset to the locking position under the elastic drive of the elastic body, the lock head stops and locks the locking part, and the automatic locking of the sliding locking piece is completed, so that the wheel is kept in the locking state; the stepping unlocking end of the stepping locking piece is pressed, the locking piece swings, the lock head of the locking piece releases the locking of the locking part, the sliding locking piece resets under the driving of the reset spring, and the sliding locking piece releases the locking of the wheel. The wheel locking operation, through stepping on the pressure piece, the pressure piece slides on the wheel carrier, and the unblock operation of wheel is through stepping on the pressure unlocking end of pressing the piece of locking, and the locking and unlocking action of stop mechanism is accomplished by two parts that are used for the operation promptly, and the operator can be stepped on pressure piece and piece of locking with the foot, and the operation is convenient.

Preferably, the sliding locking piece is fixed or integrally formed on the pressing piece, and the locking part is fixed or integrally formed on the pressing piece. Under the structural design, the sliding locking piece and the stepping piece can form a single accessory to synchronously slide, and the structure is simple and the action is stable and reliable.

Preferably, the two sides of the wheel frame are respectively provided with a wheel, the stamping part comprises a U-shaped main body, the U-shaped main body comprises a top stamping piece and two side plates which are oppositely arranged, a slot is formed between the two side plates which are oppositely arranged, the end parts of the side plates of the U-shaped main body are integrally formed or fixedly connected with a sliding locking piece, the wheel frame is formed with a plugging seat, the U-shaped main body is plugged on the plugging seat through the slot, the U-shaped main body is limited to slide on the plugging seat, a spring positioning hole is formed in the plugging seat, a reset spring is installed in the spring positioning hole and is abutted to the top stamping piece, and the locking part is arranged on the side plates. Under this structural design, step on the casting die and detain on the bayonet socket of wheel carrier, have simple structure and job stabilization reliable, simple to operate's advantage.

Preferably, the plug-in seat is provided with a limit clamping block, a bar-shaped groove extending along the sliding direction of the stamping part is arranged on the side plate of the stamping part, the limit clamping block is arranged in the bar-shaped groove, and one end part of the bar-shaped groove on the stamping part is stopped by the limit clamping block to form the limit of the stamping part to slide on the plug-in seat. Under this structural design, spacing fixture block can be at the interior relative movement of bar inslot, and spacing fixture block and the corresponding tip backstop in bar inslot to prevent to step on the casting die and break away from the wheel carrier.

Preferably, the elastic body is a thin plate-shaped elastic sheet integrally formed on the wheel frame, and the locking piece is integrally formed and connected on the wheel frame through the elastic body. Under this structural design, constitute through the elastic deformation of elastomer the piece of locking position can swing on the wheel carrier, reduce the spare part of required assembly, have simple structure, processing convenient advantage.

Preferably, the locking part is a stop convex finger arranged on the side plate, the stop convex finger is provided with a contact inclined plane for contacting the lock head and a locking surface matched with the lock head stop along the sliding direction of the stamping part, the contact inclined plane for contacting the lock head along with the sliding of the sliding locking part into the locking position drives the locking part to swing to reach the locking part to enter the locking position beyond the lock head, and an avoidance space for accommodating the lock head is arranged between the contact inclined plane of the stop convex finger and the sliding locking part. Under the structural design, the locking part is a convex stop convex finger, an avoidance space for accommodating the lock head is formed between the contact pressing inclined surface of the stop convex finger and the sliding locking piece, and when the locking part enters the locking position, the lock head is accommodated in the avoidance space in a free state of the locking piece, and the lock head is forced to avoid by the contact pressing of the stop convex finger.

Preferably, the wheel frame is provided with an unlocking position limiting structure, and the limiting position of the stepping unlocking end for operating the locking piece to swing is limited by the stopping of the unlocking position limiting structure on the locking piece. Under this structural design, avoid stepping on to step on to press the range of unlocking end drive locking piece wobbling too big, cause the elastomer rupture or break through elastic reset ability.

Preferably, the locking piece comprises a C-shaped main body, the stepping unlocking end is a lug formed in the middle of the C-shaped main body, an arc plate on one side of the stepping unlocking end is an elastic body connected to the wheel frame, the C-shaped main body is an arc plate on the other side of the stepping unlocking end, the arc plate on the other side of the stepping unlocking end is a locking plate provided with a locking head, one end of the locking plate with the locking head protrudes to form a stop convex part, the unlocking position limiting structure comprises a limiting hook arranged on the wheel frame, and the hook head of the limiting hook is matched with the stop convex part in a stop mode. Under the structural design, the whole structure is compact, and the work is stable and reliable.

Preferably, the sliding locking piece is a toothed plate with meshing teeth, and the wheel is provided with a gear ring correspondingly matched with the toothed plate. Under the structural design, the locking of the wheel is reliable.

The utility model is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a top view of the caster of the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an assembled view of the wheel frame portion of the caster of the present utility model;

FIG. 4 is a schematic view of the structure of the wheel frame of the present utility model;

FIG. 5 is an exploded view of the caster of the present utility model;

fig. 6 is a schematic structural view of the stamping member of the present utility model.

Description of the embodiments

Referring to fig. 1-6, the caster with stopping function disclosed by the utility model comprises a wheel frame 1, wheels 2 and stopping mechanisms, wherein one wheel 2 is arranged on two lateral sides of the wheel frame 1, the wheels 2 are arranged on the wheel frame 1 through wheel shafts, the stopping mechanisms comprise sliding locking pieces 3 used for locking and unlocking the wheels 2, return springs 4 and operating members, the sliding locking pieces 3 are slidably arranged on the wheel frame 1 along the radial direction of the wheels 2, the return springs 4 provide driving force required for driving the sliding locking pieces 3 to slide towards the direction of unlocking the wheels 2, the operating members comprise a pressing piece 5 and a locking piece 6, the pressing piece 5 is in sliding fit with the wheel frame 1, the sliding locking pieces 3 are pushed by the pressing piece 5 to slide to a locking position of the locking wheels 1, the locking piece 6 is arranged on the wheel frame 1 in a swinging mode, the locking piece 6 is provided with a lock head 61, the lock head 61 is matched with a locking part 51 which slides synchronously, the locking piece 6 is provided with an elastomer 62, the elastomer 62 tends to keep falling to the locking piece 6 at the locking position, the locking piece 6 is in the locking position is locked by the locking piece 6 is unlocked, and the locking piece 6 is in the locking position is unlocked by the locking piece 6, and the locking piece 6 is matched with the locking part 51 at the locking piece 6.

The sliding locking member 3 is fixed or integrally formed on the pressing member 5, and the locking portion 51 is fixed or integrally formed on the pressing member 5. The sliding locking piece, the locking part and the stepping piece can form a single accessory to synchronously slide, and the sliding locking piece is simple in structure and stable and reliable in action. The sliding locking piece and the stamping piece can be relatively independent accessories, the sliding locking piece and the stamping piece are in abutting fit, and synchronous action of the sliding locking piece and the stamping piece is realized under the action of the return spring, wherein the locking part can be arranged on the sliding locking piece or the stamping piece, but the locking part is designed by multiple parts, and the defects of inconvenient assembly and insufficient working stability are overcome.

In order to facilitate the installation of the stamping part, the stamping part 5 comprises a U-shaped main body 5-1, the U-shaped main body 5-1 comprises a top stamping piece 5-11 and two side plates 5-12 which are oppositely arranged, a slot 5-13 is formed between the two side plates 5-12 which are oppositely arranged, the end parts of the side plates 5-12 of the U-shaped main body 5-1 are integrally formed or fixedly connected with a sliding locking piece 3, a socket 11 is formed on the wheel carrier 1, the U-shaped main body 5-1 is inserted on the socket 11 through the slot 5-13, the U-shaped main body 5-1 is limited to slide on the socket 11, a spring positioning hole 12 is formed in the socket 11, the return spring 4 is installed in the spring positioning hole 12 and is abutted on the top stamping piece 5-11, and the locking part 51 is arranged on the side plates 5-12. The stamping part is buckled on the plugging seat of the wheel frame, and has the advantages of simple structure, stable and reliable work and convenient installation. The structure for positioning and guiding the stamping part is formed on the inserting seat, the positioning and guiding structure can be a groove guide groove or a guiding convex rib, in the specific embodiment, the guiding groove 111 is formed on the inserting seat, and the guiding convex rib 5-121 is formed on the side plate 5-12. The plug seat 11 is provided with a limit clamping block 112, the side plates 5-12 of the stamping part 5 are provided with strip grooves 52 extending along the sliding direction of the stamping part 5, the limit clamping block 112 is arranged in the strip grooves 52, and one end part of the strip grooves 52 on the stamping part 5 is stopped by the limit clamping block 112 to form the limit of the stamping part 5 to slide on the plug seat 11. The limiting clamping blocks can move relatively in the strip-shaped grooves, and the limiting clamping blocks are stopped at the corresponding end parts of the strip-shaped grooves, so that the stamping part is prevented from being separated from the wheel frame. Of course, as an equivalent scheme, a bar-shaped groove can be formed in the plug-in seat, a transverse pin is fixed on the side plate, and the transverse pin is limited in the bar-shaped groove to achieve limiting. Of course, as a feasible scheme of the utility model, the stepping piece can also be in the form of a sliding block, and the wheel frame is provided with a mounting groove for mounting and sliding guiding the sliding block. But the stamping part adopts a U-shaped structure, so that the structural strength of the wheel frame can be ensured, the stamping part is inserted on the wheel frame by utilizing the slot formed by the U-shaped main body, the assembly is convenient, and the assembly is stable and reliable.

In order to further make the structure compact, the elastic body 62 is a thin plate-shaped elastic sheet integrally formed on the wheel frame 1, and the locking piece 6 is integrally formed and connected to the wheel frame 1 through the elastic body 62. The locking piece can swing on the wheel frame through elastic deformation of the elastic body, so that parts required to be assembled are reduced, and the locking piece has the advantages of simple structure and convenience in processing. The utility model can be used as a feasible locking piece which can be pivoted on the wheel frame, and the elastic body can be a torsion spring, a pressure spring, a tension spring and the like. In this embodiment, the elastic body may be plastic as same as the material of the wheel frame, so that the injection molding process is simple, and of course, the elastic body may also be designed by adopting a metal spring piece, and the metal spring piece is coated on the wheel frame.

Because the elastic body is sheet-shaped, in order to enable the elastic body 62 to be in a free state when the caster is normally used, the locking part 51 is a stop convex finger arranged on the side plates 5-12, the stop convex finger is distributed with a contact inclined surface 511 of the contact lock head 61 and a locking surface 512 matched with the stop of the lock head 61 along the sliding direction of the stepping piece 5, the contact inclined surface 511 of the locking part 51 contacts the lock head 61 to drive the locking part 6 to swing to reach the locking position by crossing the lock head 61, and an avoidance space 53 for accommodating the lock head 61 is formed between the contact inclined surface 511 of the stop convex finger and the sliding lock piece 3 along with the sliding of the sliding lock piece 5 into the locking position. The locking part is a convex stop convex finger, an avoidance space for accommodating the lock head is formed between the contact pressing inclined surface of the stop convex finger and the sliding locking piece, and when the locking part enters the locking position, the lock head is accommodated in the avoidance space in a free state of the locking piece, and the lock head is forced to avoid by contact pressing of the stop convex finger. The locking part can be a step groove, the lock head is pressed on the stepping piece when the locking part does not enter the locking position, and the lock head is driven by the elastic force of the elastic body to be clamped into the step groove to complete locking when the locking part enters the locking position. But the raised stop convex finger design is adopted, so that the lock head can be allowed to enter the avoidance space, and the elastic body is in a free state.

The elastic body is prevented from breaking or breaking through elastic reset capability due to overlarge amplitude of the stepping and pressing unlocking end driving locking piece to swing. The wheel carrier 1 is provided with an unlocking position limiting structure, and the limit position of the swing of the locking piece 6 is limited by the stepping unlocking end 63 through the stop of the unlocking position limiting structure to the locking piece 6.

Wherein, the locking piece 6 includes C type main part 6-1, step on and press the tip 63 for shaping at C type main part 6-1 middle part, C type main part 6-1 distributes and presses the arc of tip 63 one side for connecting the elastomer 63 on wheel carrier 1, C type main part 6-1 distributes and presses the arc of tip 63 opposite side for being equipped with the lock board of tapered end 61, the one end of taking tapered end 61 on the lock board is protruding to have backstop convex part 6-2, the limit hook 13 of unblock position limit structure on locating wheel carrier 1, the gib head 131 and the backstop convex part 6-2 backstop cooperation of limit hook 13. The whole structure is simple and compact, the work is stable and reliable, and the deformation of the C-shaped main body is reliable.

The sliding locking member 3 is a toothed plate with meshing teeth, and a gear ring 21 correspondingly matched with the toothed plate is arranged on the wheel 1. The locking of the wheel is reliable. Of course, the sliding lock and the wheel may also be configured to frictionally engage to achieve a lock.

The working process of the utility model is as follows: wheel locking operation: the treading piece 5 is treaded, the treading piece 5 pushes the sliding locking piece 3 to slide and enter a locking position, the sliding locking piece 3 is meshed with the gear ring 21 on the wheel 2, the wheel 1 is stopped, and meanwhile the reset spring 4 stores energy; in the process that the sliding locking piece 3 enters the locking position, the locking part 51 contacts the locking head 61 to enable the locking piece 6 to swing, the locking part 51 passes over the locking head 61, the locking piece 6 is driven by the elastic force of the elastic body 62 to reset to the locking position, the locking head 61 stops locking the locking part 51, in order to enable the locking head to be touched and pressed, the top of the locking head adopts an inclined plane design to keep the sliding locking piece at the locking position, and the automatic locking of the sliding locking piece is completed, so that the wheels are kept in the locking state;

unlocking operation of the wheels: the stepping unlocking end 63 of the stepping locking piece 6 is pressed, the locking piece 6 swings, the stepping amplitude of the stepping unlocking end 63 is limited under the limit of the limiting hook 13, the lock head 61 of the locking piece 6 is withdrawn from the corresponding position of the locking part 51, the sliding locking piece 3 is sprung under the drive of the reset spring 4, and the sliding locking piece 3 releases the locking of the wheel 2.

The operation member is formed by the stamping part and the locking part, so that an operator can use feet to stamp the stamping part and the locking part to finish unlocking and locking operations of the wheels, and the operation is convenient.

Claims

1. The utility model provides a take truckle of locking function, includes wheel carrier, wheel and stop mechanism, and the wheel is installed on the wheel carrier through the shaft, stop mechanism includes slip locking piece, reset spring and the operating member that is used for locking and unblock to the wheel, and slip locking piece is along the setting of wheel radial direction slidable on the wheel carrier, and reset spring provides the required driving force of drive slip locking piece to unblock wheel direction slip, its characterized in that: the operation component comprises a stamping part and a locking piece, the stamping part is in sliding fit on the wheel frame, the sliding locking piece is pushed by the stamping part to slide to a locking position of the locking wheel, the locking piece is arranged on the wheel frame in a swinging mode, the locking piece is provided with a lock head, the lock head is matched with a locking part which slides synchronously along with the sliding locking piece, the locking piece is provided with an elastomer which drives the locking piece to tend to be kept at a locking falling position, the locking piece is in locking fit with the locking part which enters the locking position along with the sliding locking piece, and the locking piece is provided with a stepping unlocking end which is used for operating the locking piece to swing to release locking of the locking part.

2. The caster with stopper function according to claim 1, wherein: the sliding locking piece is fixed or integrally formed on the stamping piece, and the locking part is fixed or integrally formed on the stamping piece.

3. The caster with stopper function according to claim 2, wherein: the wheel is respectively arranged on two sides of the wheel frame, the stamping part comprises a U-shaped main body, the U-shaped main body comprises a top stamping piece and two side plates which are oppositely arranged, a slot is formed between the two side plates which are oppositely arranged, a sliding locking piece is integrally formed or fixedly connected with the end parts of the side plates of the U-shaped main body, a plugging seat is formed on the wheel frame, the U-shaped main body is plugged on the plugging seat through the slot, the U-shaped main body is limited to slide on the plugging seat, a spring positioning hole is formed in the plugging seat, a reset spring is mounted in the spring positioning hole and is abutted to the top stamping piece, and the locking part is arranged on the side plates.

4. A castor with stopping function according to claim 3, wherein: the limiting clamping blocks are arranged on the inserting seat, the side plates of the stamping part are provided with strip-shaped grooves extending along the sliding direction of the stamping part, the limiting clamping blocks are arranged in the strip-shaped grooves, and one end parts of the strip-shaped grooves on the stamping part are stopped by the limiting clamping blocks to form the limiting effect of limiting the stamping part to slide on the inserting seat.

5. A castor with stopping function according to claim 3, wherein: the elastic body is a thin plate-shaped elastic sheet integrally formed on the wheel frame, and the locking piece is integrally formed and connected to the wheel frame through the elastic body.

6. The caster with stopper function according to claim 5, wherein: the locking part is a stop convex finger arranged on the side plate, a contact inclined plane of the contact lock head and a locking surface matched with the lock head stop are distributed on the stop convex finger along the sliding direction of the stepping piece, the contact inclined plane of the locking part contacts the lock head to drive the locking part to swing to reach the locking part to enter the locking position beyond the lock head along with the sliding of the sliding locking piece into the locking position, and an avoidance space for accommodating the lock head is formed between the contact inclined plane of the stop convex finger and the sliding locking piece.

7. The caster with stopper function according to claim 5, wherein: the wheel frame is provided with an unlocking position limiting structure, and the limiting position of the stepping unlocking end for operating the locking piece to swing is limited by the stopping of the unlocking position limiting structure on the locking piece.

8. The caster with stopper function according to claim 7, wherein: the locking piece comprises a C-shaped main body, the stamping unlocking end is a lug formed in the middle of the C-shaped main body, an arc plate on one side of the stamping unlocking end is an elastic body connected to the wheel frame, the C-shaped main body is an arc plate on the other side of the stamping unlocking end, a locking plate provided with a locking head is arranged on the arc plate, a stop convex part is protruded at one end of the locking plate with the locking head, and the unlocking position limiting structure comprises a limiting hook arranged on the wheel frame, and a hook head of the limiting hook is matched with the stop convex part in a stop mode.

9. The caster with stopper function according to claim 1, wherein: the sliding locking piece is a toothed plate with meshing teeth, and a gear ring which is correspondingly matched with the toothed plate is arranged on the wheel.