Trundle with brake and doll-slipping luggage case

Abstract

The trundle with the brake comprises a wheel carrier, idler wheels and a brake assembly, the idler wheels are connected with the wheel carrier in a rotating mode, and the brake assembly is located on the wheel carrier. The brake assembly comprises a brake pad and a brake piece used for driving the brake pad to move towards the roller, the end, away from the brake pad, of the brake piece extends out of the wheel frame, the brake piece can slide relative to the wheel frame, and the brake pad is attached to the roller in the state that the brake piece is pressed down. The brake device further comprises a locking piece which is used for locking the attaching state of the brake pad and the rolling wheel. The trundle with the brake and the doll-slipping luggage case have the advantages that the brake piece can drive the brake pad to move towards the idler wheel when the brake piece is pressed down, so that the brake pad is in friction contact with the idler wheel, and braking is achieved; due to the design of the locking pieces, the rolling wheels can be kept in a braking state and cannot roll freely, so that the baby carriage, the luggage and the like can be in a braking state, and the baby carriage, the luggage and the like can be fixedly placed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a trundle technology field especially a trundle with brake and baby stroller luggage case. BACKGROUND

[0002] Trundle is a general term, including movable trundle and fixed trundle. Movable trundle is also called universal wheel, and its structure allows 360-degree rotation. Fixed trundle is also called directional trundle, and it has no rotating structure and cannot rotate. The application range of trundle is very wide, and it is commonly used in luggage, baby strollers and the like. In the prior art, the brake of trundle is usually braked by brake spring and brake pedal, but this structure often needs to step on the brake pedal to brake, and cannot keep the brake state. SUMMARY

[0003] One purpose of the present application is to provide a trundle with brake and baby stroller luggage case, which can keep the brake state.

[0004] The technical scheme adopted by the present application is as follows: a trundle with brake, comprising a wheel frame, a roller and a brake assembly, the roller is rotationally connected with the wheel frame, and the brake assembly is located on the wheel frame; the brake assembly comprises a brake pad and a brake piece for driving the brake pad to move towards the roller, one end of the brake piece away from the brake pad extends out of the wheel frame, the brake piece is slidable relative to the wheel frame, and in the state that the brake piece is pressed down, the brake pad is attached to the roller; further comprising a locking piece, the locking piece is used for locking the attached state of the brake pad and the roller.

[0005] Compared with the prior art, the advantages of the present application are as follows: the wheel frame is used for mounting and fixing the roller and the brake assembly; the brake pad is used for frictional contact with the roller to realize braking; part of the brake piece extends out of the wheel frame, which facilitates pressing the brake piece; the extending end of the brake piece is the end away from the brake pad, which facilitates pressing the brake piece to drive the brake pad to move; pressing the brake piece can drive the brake piece to move the brake pad towards the roller, and then the brake pad and the roller are in frictional contact, realizing braking; in the state that the brake piece is pressed down, the locking piece can block the upward reset of the brake piece, and then lock the brake piece, so as to lock the attached state of the brake pad and the roller. The design of the locking piece can keep the roller in the brake state and cannot freely roll, so as to keep the baby stroller, luggage and the like in the brake state, which is beneficial to the fixed placement of the baby stroller, luggage and the like.

[0006] In some embodiments of the present application, an unlocking piece is further included, which is used for unlocking the locking of the attached state of the brake pad and the roller.

[0007] Further, the wheel frame comprises an upper shell and a lower shell, the upper shell and the lower shell are connected by bolts; the brake part comprises a first pressing part and a step part, the top of the first pressing part extends out of the upper shell, the bottom of the first pressing part is connected with the brake pad, and the top surface of the step part faces away from the brake pad; in the locked state, the bottom surface of the locking part is attached to the top surface of the step part. The top of the first pressing part extends out, facilitating pressing; the step part is used in cooperation with the locking part to ensure reliable locking.

[0008] Further, a first elastic part is arranged between the first pressing part and the lower shell, and the first elastic part is used to drive the first pressing part to extend out of the upper shell. The design of the first elastic part enables the first pressing part to be automatically reset upward after being pressed down under the pushing of the first elastic part, facilitating next pressing and preventing the first pressing part from falling under the action of gravity.

[0009] Further, a second elastic part is arranged between the locking part and the upper shell, and the second elastic part is used to drive the locking part to move towards the brake part. The design of the second elastic part enables the locking part to have a movement trend towards the brake part, and after the first pressing part is pressed down, the locking part can move above the step part under the pushing of the second elastic part, completing automatic locking.

[0010] Further, a first inclined surface is arranged on the locking part, the unlocking part comprises a second pressing part and a second inclined surface, the first inclined surface cooperates with the second inclined surface, the top of the second pressing part extends out of the upper shell, and the second pressing part is slidable relative to the upper shell; in the locked state, the first inclined surface is attached to the second inclined surface and the second pressing part extends out of the upper shell. The second pressing part extends out of the upper shell, facilitating unlocking pressing; the cooperation of the first inclined surface and the second inclined surface enables the unlocking part and the locking part to push each other, enabling linkage between the unlocking part and the locking part to ensure reliable unlocking.

[0011] Further, the locking part is provided with first protrusions extending symmetrically to two sides, the first inclined surface is arranged on the first protrusions, the bottom of the unlocking part is provided with second protrusions extending downward, and the second inclined surface is arranged on the second protrusions. The first inclined surface and the second inclined surface are symmetrically arranged on two sides, the pressing force is uniformly transmitted, the locking part moves stably under the action of force on two sides, and the locking part is prevented from being stuck due to unilateral deflection.

[0012] Further, the upper shell is provided with a first through hole and a second through hole, the first pressing part is arranged in the first through hole, the second pressing part is arranged in the second through hole, the lower shell is provided with a third through hole, and the brake pad is arranged in the third through hole; the upper shell is provided with a connecting column, and the connecting column is arranged obliquely. The connecting column is used for quick connection with a baby carriage, a luggage and the like, the connecting column is arranged obliquely to expand the distance between the connecting column and the brake part, and facilitating the user to press the brake part.

[0013] In some embodiments of the present application, the brake pad comprises a mounting portion and a braking portion, and the braking portion is provided with convex points; the bottom surface of the braking portion is matched with the outer surface of the roller. The design of the convex points is more conducive to pressure concentration, and ensures the reliable contact between the braking portion and the roller; after the convex points are worn, the bottom surface of the braking portion can also be in large-area contact with the roller to realize braking.

[0014] A baby strolling luggage case comprises the above-mentioned caster with brake. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of embodiment 1 of the present utility model;

[0016] Figure 2 is a sectional view of embodiment 1 of the present utility model;

[0017] Figure 3 is a structural schematic view of embodiment 1 of the present utility model without the upper shell;

[0018] Figure 4 is a structural schematic view of the brake pad of embodiment 1 of the present utility model;

[0019] Figure 5 is a structural schematic view of the brake piece of embodiment 1 of the present utility model.

[0020] In the drawing: 1, wheel frame; 2, roller; 3, brake pad; 4, brake piece; 5, locking piece; 6, unlocking piece; 7, upper shell; 8, lower shell; 9, first pressing portion; 10, step portion; 11, first elastic piece; 12, second elastic piece; 13, first inclined surface; 14, second pressing portion; 15, second inclined surface; 16, first convex block; 17, second convex block; 18, first through hole; 19, second through hole; 20, third through hole; 21, connecting column; 22, mounting portion; 23, braking portion; 24, convex point; 25, baffle; 26, first positioning column; 27, second positioning column; 28, mounting groove; 29, first convex platform; 30, recess; 31, fixing groove; 32, stop block; 33, positioning groove. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the present utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0022] Embodiment 1:

[0023] The caster with brake provided in the present embodiment is as shown in Figure 1 , Figure 2As shown, including wheel frame 1, the roller 2 and brake assembly, the roller 2 and wheel frame 1 rotationally connected, brake assembly located on the wheel frame 1; brake assembly includes brake pad 3 and brake piece 4 for driving brake pad 3 to move towards the roller 2, brake piece 4 away from the brake pad 3 one end of the wheel frame 1, brake piece 4 can slide relative to the wheel frame 1, in the brake piece 4 under the state, brake pad 3 and roller 2 fit; also includes locking piece 5, locking piece 5 for brake pad 3 and roller 2 fit state locking. Brake pad 3 one end and brake piece 4 connection, the other end of the brake pad 3 towards the roller 2.

[0024] Wheel frame 1 for the installation and fixation of the roller 2 and brake assembly; brake pad 3 for and roller 2 friction contact to realize brake; brake piece 4 part of the wheel frame 1, facilitate the brake piece 4; brake piece 4 of the protruding end is away from the brake pad 3, facilitate the brake piece 4 push brake pad 3 move; press down the brake piece 4 can make the brake piece 4 drive brake pad 3 towards the roller 2, and then make the brake pad 3 and roller 2 friction contact, realize brake; in the brake piece 4 under the state, locking piece 5 can block the brake piece 4 upward reset, and then realize the locking of brake piece 4, also can lock the brake pad 3 and roller 2 fit state, the design of locking piece 5, can make the roller 2 keep brake state, can't free rolling, also can make the child car, luggage and so on in brake state, benefit the fixed placement of child car, luggage and so on.

[0025] In order to facilitate unlocking, also includes unlocking piece 6, unlocking piece 6 for removing the locking of brake pad 3 and roller 2 fit state.

[0026] In order to wheel frame 1 reliable, the wheel frame 1 includes upper shell 7 and lower shell 8, upper shell 7 and lower shell 8 between through bolt connection, upper shell 7 and lower shell 8 between forming installation cavity, brake assembly is arranged on the installation cavity.

[0027] In order to make the brake piece 4 reliable, the brake piece 4 comprises a first pressing part 9 and a step part 10, the top of the first pressing part 9 extends out of the upper shell 7, the bottom of the first pressing part 9 is connected with the brake pad 3, the top surface of the step part 10 faces away from the brake pad 3, and the step part 10 is arranged around the first pressing part 9; in the locked state, the bottom surface of the locking piece 5 is attached to the top surface of the step part 10. The step part 10 cooperates with the locking piece 5, in the unlocked state, the side surface of the locking piece 5 is attached to the side surface of the step part 10, the locking piece 5 cannot block the up-down movement of the first pressing part 9 relative to the upper shell 7, so that the first pressing part 9 can be pressed down, after the first pressing part 9 is pressed down, the locking piece 5 is separated from the side surface of the step part 10 and reaches above the step part 10, in the state that the bottom surface of the locking piece 5 is attached to the top surface of the step part 10, the first pressing part 9 cannot be reset upward, so that the brake pad 3 and the roller 2 keep in contact and are in the braking state. In the embodiment, the top surface of the step part 10 is provided with a groove 30, the width of the groove 30 is the same as the width of the locking piece 5, and in the locked state, the bottom surface of the locking piece 5 is attached to the bottom surface of the groove 30.

[0028] In order to make the first pressing part 9 automatically reset, the first pressing part 9 and the lower shell 8 are provided with a first elastic piece 11, and the first elastic piece 11 is used to drive the first pressing part 9 to extend out of the upper shell 7. The design of the first elastic piece 11 can make the first pressing part 9 automatically reset upward after being pressed down under the pushing of the first elastic piece 11, which is convenient for next pressing and can prevent the first pressing part 9 from falling under the action of gravity.

[0029] In the embodiment, the first elastic piece 11 is a spring, the first pressing part 9 is provided with an outwardly extending baffle 25, the baffle 25 is provided with a first positioning column 26, the lower shell 8 is provided with a second positioning column 27, the first positioning column 26 and the second positioning column 27 are concentrically and oppositely arranged, and the two ends of the spring are respectively sleeved on the first positioning column 26 and the second positioning column 27.

[0030] In order to make the locking piece 5 automatically lock, the locking piece 5 and the upper shell 7 are provided with a second elastic piece 12, and the second elastic piece 12 is used to drive the locking piece 5 to move towards the brake piece 4. The design of the second elastic piece 12 can make the locking piece 5 have a movement trend towards the brake piece 4, and after the first pressing part 9 is pressed down, the locking piece 5 can move above the step part 10 under the pushing of the second elastic piece 12 to complete automatic locking.

[0031] In the embodiment, the second elastic piece 12 is a spring, the locking piece 5 is provided with a mounting groove 28, one end of the spring is located in the mounting groove 28, and the other end abuts against the inner wall of the upper shell 7.

[0032] In order to unlock reliably, the locking piece 5 is provided with a first inclined surface 13, the unlocking piece 6 includes a second pressing portion 14 and a second inclined surface 15, the first inclined surface 13 cooperates with the second inclined surface 15, the top of the second pressing portion 14 extends out of the upper shell 7, and the second pressing portion 14 can slide relative to the upper shell 7; in the locked state, the first inclined surface 13 is attached to the second inclined surface 15 and the second pressing portion 14 extends out of the upper shell 7. The second pressing portion 14 extends out of the upper shell 7, facilitating unlocking pressing; the first inclined surface 13 cooperates with the second inclined surface 15, so that the unlocking piece 6 and the locking piece 5 can push each other; in use, the locking piece 5 moves towards the brake piece 4, the first inclined surface 13 pushes the second inclined surface 15, so that the unlocking piece 6 moves upward, the second pressing portion 14 extends out of the upper shell 7, and is in the locked state; when unlocking, the second pressing portion 14 is pressed, the second pressing portion 14 drives the second inclined surface 15 to move downward, the second inclined surface 15 pushes the first inclined surface 13, so that the locking piece 5 moves away from the brake piece 4, the brake piece 4 no longer blocks the step portion 10, so that the first pressing portion 9 can move upward, the brake pad 3 and the roller 2 are separated, and unlocking is completed.

[0033] In order to unlock reliably, the locking piece 5 is provided with a first inclined surface 13, the unlocking piece 6 includes a second pressing portion 14 and a second inclined surface 15, the first inclined surface 13 cooperates with the second inclined surface 15, the top of the second pressing portion 14 extends out of the upper shell 7, and the second pressing portion 14 can slide relative to the upper shell 7; in the locked state, the first inclined surface 13 is attached to the second inclined surface 15 and the second pressing portion 14 extends out of the upper shell 7. The second pressing portion 14 extends out of the upper shell 7, facilitating unlocking pressing; the first inclined surface 13 cooperates with the second inclined surface 15, so that the unlocking piece 6 and the locking piece 5 can push each other; in use, the locking piece 5 moves towards the brake piece 4, the first inclined surface 13 pushes the second inclined surface 15, so that the unlocking piece 6 moves upward, the second pressing portion 14 extends out of the upper shell 7, and is in the locked state; when unlocking, the second pressing portion 14 is pressed, the second pressing portion 14 drives the second inclined surface 15 to move downward, the second inclined surface 15 pushes the first inclined surface 13, so that the locking piece 5 moves away from the brake piece 4, the brake piece 4 no longer blocks the step portion 10, so that the first pressing portion 9 can move upward, the brake pad 3 and the roller 2 are separated, and unlocking is completed.

[0034] In order to install reliably, the upper shell 7 is provided with a first through hole 18 and a second through hole 19, the first pressing portion 9 is arranged on the first through hole 18, the second pressing portion 14 is arranged on the second through hole 19, the lower shell 8 is provided with a third through hole 20, and the brake pad 3 is arranged on the third through hole 20. The first through hole 18 is provided with a first boss 29 which protrudes outward and is arranged along the edge of the first through hole 18, the first boss 29 can play a guiding role to ensure the reliable movement of the first pressing portion 9; the step portion 10 can play a blocking role to prevent the brake piece 4 from coming out of the first through hole 18.

[0035] In order to facilitate connection, the upper shell 7 is provided with a connecting column 21 which is arranged obliquely, the connecting column 21 is used for quick connection with a baby carriage, a bag or the like, the connecting column 21 is arranged obliquely, can expand the distance between the connecting column 21 and the brake piece 4, and facilitates the user to press the brake piece 4.

[0036] In order to ensure the reliability of the brake pad 3, the brake pad 3 comprises a mounting portion 22 and a braking portion 23, and the braking portion 23 is provided with convex points 24. The mounting portion 22 is used to be connected with the first pressing portion 9, and the braking portion 23 is used to be in frictional contact with the roller 2. When the braking portion 23 is in contact with the roller 2, if the surface contact is adopted, the pressure is dispersed, and the sliding between the two is easy. However, if the convex points 24 are adopted, the pressure is concentrated, and the contact between the two is ensured to be reliable. Specifically, the bottom of the brake piece 4 is provided with a fixing groove 31, and a part of the mounting portion 22 is located in the fixing groove 31. The side surface of the mounting portion 22 is provided with an outwardly protruding stop block 32. The brake piece 4 is provided with a positioning groove 33 matched with the stop block 32. The stop block 32 is matched with the positioning groove 33, so that the brake pad 3 can be conveniently installed and positioned relative to the brake piece 4. In the embodiment, five convex points 24 are provided and are distributed in a cross shape.

[0037] The bottom surface of the braking portion 23 is matched with the outer surface of the roller 2. After the convex points 24 are worn, the bottom surface of the braking portion 23 can also be in large-area contact with the roller 2 to realize braking. The two sides of the braking portion 23 extend towards the roller 2, so that the two sides of the braking portion 23 can also be in frictional contact with the side surface of the roller 2 in the braking state, the frictional contact area is increased, and the braking effect is ensured.

[0038] Embodiment 2:

[0039] The embodiment provides a baby walking luggage box with a brake.

[0040] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above, it is not intended to limit the utility model. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the utility model. Any modification, equivalent change and modification of the above embodiment without departing from the technical solution of the utility model are still within the scope of the utility model.

Claims

1. A castor with brake, characterized in that The application relates to a trolley wheel with a brake, which comprises a wheel frame (1), a rolling wheel (2) and a brake assembly, the rolling wheel (2) is rotationally connected with the wheel frame (1), and the brake assembly is arranged on the wheel frame (1); the brake assembly comprises a brake pad (3) and a brake piece (4) for driving the brake pad (3) to move towards the rolling wheel (2), one end of the brake piece (4) away from the brake pad (3) extends out of the wheel frame (1), the brake piece (4) can slide relative to the wheel frame (1), and the brake pad (3) is attached to the rolling wheel (2) in a pressed state of the brake piece (4); the trolley wheel further comprises a locking piece (5) for locking the attached state of the brake pad (3) and the rolling wheel (2).

2. The caster with brake according to claim 1, characterized in that: The trolley wheel further comprises an unlocking piece (6) for unlocking the attached state of the brake pad (3) and the rolling wheel (2).

3. The castor with brake according to claim 2, characterized in that: The wheel frame (1) comprises an upper shell (7) and a lower shell (8), the upper shell (7) and the lower shell (8) are connected through bolts; the brake piece (4) comprises a first pressing part (9) and a stepped part (10), the top of the first pressing part (9) extends out of the upper shell (7), the bottom of the first pressing part (9) is connected with the brake pad (3), and the top surface of the stepped part (10) faces away from the brake pad (3); in the locking state, the bottom surface of the locking piece (5) is attached to the top surface of the stepped part (10).

4. The castor with brake according to claim 3, characterized in that: A first elastic piece (11) is arranged between the first pressing part (9) and the lower shell (8), and the first elastic piece (11) is used for driving the first pressing part (9) to extend out of the upper shell (7).

5. The castor with brake according to claim 3, characterized in that: A second elastic piece (12) is arranged between the locking piece (5) and the upper shell (7), and the second elastic piece (12) is used for driving the locking piece (5) to move towards the brake piece (4).

6. The castor with brake according to claim 3, characterized in that: A first inclined surface (13) is arranged on the locking piece (5), the unlocking piece (6) comprises a second pressing part (14) and a second inclined surface (15), the first inclined surface (13) is matched with the second inclined surface (15), the top of the second pressing part (14) extends out of the upper shell (7), and the second pressing part (14) can slide relative to the upper shell (7); in the locking state, the first inclined surface (13) is attached to the second inclined surface (15) and the second pressing part (14) extends out of the upper shell (7).

7. The castor with brake according to claim 6, characterized in that: First protrusions (16) extending to both sides are arranged on the locking piece (5), the first inclined surface (13) is arranged on the first protrusions (16), the bottom of the unlocking piece (6) is provided with second protrusions (17) extending downwards, and the second inclined surface (15) is arranged on the second protrusions (17).

8. The castor with brake according to claim 6, characterized in that: First and second through holes (18) and (19) are arranged on the upper shell (7), the first pressing part (9) is arranged on the first through hole (18), the second pressing part (14) is arranged on the second through hole (19), a third through hole (20) is arranged on the lower shell (8), and the brake pad (3) is arranged on the third through hole (20); a connecting column (21) is arranged on the upper shell (7) and is arranged obliquely.

9. The castor with brake according to claim 1, characterized in that: The brake pad (3) comprises a mounting part (22) and a braking part (23), and convex points (24) are arranged on the braking part (23); the bottom surface of the braking part (23) is matched with the outer surface of the rolling wheel (2).

10. A stroller duffel bag, characterized by, The application further discloses a trolley wheel with a brake, which comprises the trolley wheel with the brake.

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