A trolley case brake structure and a trolley case

Abstract

The utility model discloses a kind of trolley case brake structures, including trigger mechanism, brake mechanism and trundle mechanism;Trigger mechanism includes pedal, and the one end of pedal is connected with tread arm, and clamping plate is provided on the tread arm, and clamping plate is connected with trigger rod, and trigger rod is fixedly connected with trigger shell, and trigger shell is also fixed with operating rod;Brake mechanism includes upper structure and lower structure;Lower structure includes brake frame, and the brake frame is provided with brake groove, and brake plate is slidably arranged in brake groove, and the upper end of brake plate is provided with lower tooth piece;Upper structure includes fixed tube, limiting sleeve and brake link, and the lower end of brake link is provided with upper tooth piece, and the upper end of brake link is connected with cam rolling;Cam is rotatably installed in fixed tube, and operating rod penetrates fixed tube and is connected with cam;Trundle mechanism includes wheel seat, and wheel is rotatably installed on wheel seat, and wheel includes walking wheel and brake wheel;The downside of brake plate is provided with camber surface, and the camber surface is used to abut with the surface of brake wheel.

Description

Technical Field

[0001] This utility model relates to the field of trolley case technology, and in particular to a trolley case braking structure and a trolley case. Background Technology

[0002] A rolling suitcase is a type of luggage with a pull handle and wheels, including travel cases and toolboxes. Due to its convenience, rolling suitcases have become the preferred equipment for business trips and travel. A rolling suitcase is equipped with a pull handle for easy dragging while walking, greatly reducing the burden.

[0003] Casters are accessories for rolling suitcases, easily seen in daily life, including the stand and wheels, with the wheels mounted on the lower end of the stand. During use, users sometimes park their suitcases on slopes or on moving public transportation. Because the casters lack brakes, the suitcases often slide on slopes, causing inconvenience. Especially nowadays, most rolling suitcases use swivel wheels, which are convenient to carry and popular in the market. However, when using public transportation, sudden braking can cause suitcases with swivel wheels to slide rapidly, leading to numerous disputes. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a braking structure for a suitcase, thereby solving the problems mentioned in the background art.

[0005] The objective of this utility model is achieved through the following technical solution: According to an embodiment of this disclosure, a rolling suitcase braking structure is provided, including a mounting housing, on which a triggering mechanism, a braking mechanism, and a caster mechanism are mounted; The triggering mechanism includes a pedal, which is rotatably mounted inside the mounting housing; one end of the pedal is connected to a foot arm, and a clamping plate is provided on the side of the upper surface of the foot arm away from the pedal. An arc-shaped clamping groove is provided on the top of the clamping plate, and a trigger rod is provided in the arc-shaped clamping groove. The trigger rod is fixedly connected to the triggering housing, and an operating lever is also fixedly connected to the triggering housing. The braking mechanism includes an upper structure and a lower structure. The lower structure includes a ring-shaped brake frame with a brake groove recessed inward. A brake plate is slidably disposed within the brake groove, and a lower toothed plate is disposed at the upper end of the brake plate. The upper structure includes a fixed tube, a limiting sleeve disposed within the fixed tube, and a brake linkage slidably disposed within the limiting sleeve. An upper toothed plate that can mesh with the lower toothed plate is disposed at the lower end of the brake linkage. An adjusting member is connected to the upper end of the brake linkage, and the upper end of the adjusting member is rotatably connected to a cam. The cam is rotatably mounted within the fixed tube, and the operating lever passes through the fixed tube and is connected to the cam. The caster mechanism includes a cylindrical wheel seat, with wheels rotatably mounted on both sides of the wheel seat. The wheels include an outer traveling wheel and an inner brake wheel. The brake bracket is mounted on the outer side of the wheel seat. The lower side of the brake plate has an arc surface that abuts against the surface of the brake wheel. The wheel seat, brake wheel, and travel wheel are coaxially mounted, and the diameter of the travel wheel is larger than that of the brake wheel; the brake bracket is sleeved with the wheel seat through an internal collar.

[0006] As a preferred embodiment, the upper part of the adjusting component is conical, and the lower end of the cam has an arc-shaped rounded groove. The upper end of the adjusting component is rolled between the arc-shaped rounded groove and the cam surface outside the arc-shaped rounded groove. The upper end of the cam has a concave arc. A limiting post is provided inside the fixed tube, and the limiting post is located inside the concave arc. The lower part of the limiting sleeve is equipped with a main bearing, and the upper structure and the lower structure are rolledly connected by the main bearing.

[0007] As a preferred embodiment, an arc-shaped limiting groove is recessed on the lower surface of the cam at a position outside the arc-shaped rounded corner groove, and the depth of the arc-shaped limiting groove is less than the depth of the arc-shaped rounded corner groove.

[0008] As a preferred embodiment, a first return spring is sleeved on the outer side of the adjusting member, wherein a support platform is protruding on the inner side wall of the limiting sleeve, and the lower end of the first return spring is connected to the top surface of the support platform; the lower end of the brake plate and the brake groove are connected by a second return spring.

[0009] As a preferred embodiment, the upper side of the brake plate is provided with an inverted L-shaped groove, and the inner side of the brake groove is provided with a locking block; the locking block can be slidably inserted into the inverted L-shaped groove.

[0010] This application also provides a rolling suitcase, including a suitcase body and the aforementioned rolling suitcase braking structure. The bottom of the suitcase body has four mounting slots at its four corners, and the rolling suitcase braking structure is installed in each mounting slot.

[0011] As a preferred embodiment, a mounting housing is provided inside the mounting groove, and both the pedal arm and the fixing tube are installed inside the mounting housing; wherein, the lower end of the fixing tube protrudes from the bottom of the mounting housing, and the pedal protrudes from the side of the mounting housing.

[0012] As a preferred embodiment, the bottom of the pedal arm is provided with a base, which is hinged to the mounting housing via a hinge shaft.

[0013] In summary, compared with the prior art, this utility model has the following beneficial effects: This invention utilizes a foot pedal to swing the pedal downwards, causing the clamping plate to swing upwards. The clamping plate then causes the trigger housing to swing, and the control lever of the trigger housing rotates the cam. The rotation of the cam causes the brake linkage to move up and down. The downward movement of the brake linkage causes the upper and lower gears to mesh together, and the arc surface of the brake plate to press tightly against the surface of the brake wheel, achieving a good braking effect and reducing disputes caused by the rapid sliding of the suitcase due to accidents. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the brake structure of the trolley case of this utility model.

[0015] Figure 2 This is an external schematic diagram of the brake structure for the suitcase of this utility model; Figure 3 This is a schematic diagram showing the fit between the clamping plate and the trigger housing of this utility model; Figure 4 This is a schematic diagram of the pedal structure of this utility model; Figure 5 This is a schematic diagram illustrating the cooperation between the brake linkage and the brake bracket of this utility model; Figure 6 This is a schematic diagram of the cam structure of this utility model; Figure 7 This is a schematic diagram illustrating the cooperation between the brake plate and the brake wheel of this utility model; Figure 8 This is a schematic diagram of the trolley case of this utility model; Figure 9 This is a schematic diagram of the brake assembly of this utility model; The numbers and letters in the diagram represent the names of the corresponding components: 1. Install the outer casing; 21. Pedal; 22. Pedal arm; 23. Clamping plate; 24. Trigger lever; 25. Trigger housing; 251. Support arm; 26. Control lever; 27. Base; 28. Crossbeam; 31. Brake bracket; 311. Collar; 312. Locking block; 32. Brake plate; 321. Inverted L-shaped groove; 33. Lower gear; 34. Fixing tube; 341. Limiting post; 35. Limiting sleeve; 36. Brake linkage; 361. Upper gear; 37. Adjusting component; 371. First return spring; 372. Second return spring; 38. Cam; 381. Arc-shaped rounded corner groove; 382. Concave arc; 383. Arc-shaped limiting groove; 39. Main bearing; 42. Wheel; 421. Running wheel; 422. Brake wheel; 5. Box body. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figures 1 to 9 As shown, a rolling suitcase braking structure includes a mounting housing 1, on which a trigger mechanism, a braking mechanism, and a caster mechanism are mounted.

[0018] The triggering mechanism includes a pedal 21, which is rotatably mounted inside the mounting housing 1. One end of the pedal 21 is connected to a foot arm 22. A clamping plate 23 is provided on the side of the upper surface of the foot arm 22 away from the pedal 21. An arc-shaped clamping groove is provided on the top of the clamping plate 23. A trigger rod 24 is provided in the arc-shaped clamping groove. The trigger rod 24 is fixedly connected to the trigger housing 25. The trigger housing 25 is also fixedly connected to an operating lever 26.

[0019] During implementation, the trigger lever 24 is located on the lower side of the trigger housing 25, and the control lever 26 is located on the upper side of the trigger housing 25.

[0020] The braking mechanism includes an upper structure and a lower structure. The lower structure includes a ring-shaped brake frame 31 with a brake groove recessed inward. A brake plate 32 is slidably disposed in the brake groove, and a lower toothed plate 33 is disposed at the upper end of the brake plate 32. The upper structure includes a fixed tube 34, a limiting sleeve 35 disposed in the fixed tube 34, and a brake connecting rod 36 slidably disposed in the limiting sleeve 35. The lower end of the brake connecting rod 36 is provided with an upper toothed plate 361 that can mesh with the lower toothed plate 33. An adjusting member 37 is connected to the upper end of the brake connecting rod 36, and the upper end of the adjusting member 37 is rotatably connected to a cam 38. The cam 38 is rotatably mounted in the fixed tube 34, and the operating lever 26 passes through the fixed tube 34 and is connected to the cam 38.

[0021] In practice, the cross-section of the control lever 26 is hexagonal, and the center of the cam 38 is provided with a hexagonal groove that matches the control lever 26, so that the control lever 26 can stably drive the cam 38 to rotate.

[0022] The caster mechanism includes a cylindrical wheel seat, with wheels 42 rotatably mounted on both sides of the wheel seat. The wheels 42 include a traveling wheel 421 on the outer side and a brake wheel 422 on the inner side. The brake bracket 31 is mounted on the outer side of the wheel seat. The lower side of the brake plate 32 is provided with an arc surface, which is used to abut against the surface of the brake wheel 422.

[0023] In this embodiment, the foot pedal is pressed to swing the pedal downwards, which in turn causes the clamping plate to swing upwards. The clamping plate causes the trigger housing to swing, and the control lever of the trigger housing rotates the cam. The rotation of the cam causes the brake linkage to move up and down. The downward movement of the brake linkage causes the upper and lower gears to mesh together, and the arc surface of the brake plate to press tightly against the surface of the brake wheel, achieving a good braking effect and reducing disputes caused by the rapid sliding of the suitcase due to accidents.

[0024] Specifically, the wheel seat, brake wheel 422 and travel wheel 421 are coaxially mounted, and the diameter of the travel wheel 421 is larger than the diameter of the brake wheel 422.

[0025] Specifically, the brake bracket 31 is engaged with the wheel seat through a collar 311 inside it.

[0026] Specifically, the upper part of the adjusting member 37 is conical, and the lower end of the cam 38 is provided with an arc-shaped rounded corner groove 381. The upper end of the adjusting member 37 is rolled between the arc-shaped rounded corner groove 381 and the surface of the cam 38 outside the arc-shaped rounded corner groove 381. The upper end of the cam 38 is provided with a concave arc 382. A limiting post 341 is provided in the fixed tube 34, and the limiting post 341 is located in the concave arc 382. The lower part of the limiting sleeve 35 is equipped with a main bearing 39, and the upper structure and the lower structure are rolledly connected by the main bearing 39.

[0027] In practice, the assembly also includes an outer casing, which comprises an upper cover 61 and a lower mounting shell 62. The upper cover 61 is sleeved with the lower part of the limiting sleeve 35. The lower mounting shell 62 includes a mounting part 621, the main bearing of which is mounted inside; the upper end of the mounting part 621 is provided with a mounting protrusion, and the lower end of the upper cover 61 is provided with a mounting groove for the mounting protrusion to be inserted; the lower end of the mounting part 621 is connected to a protective shell 622, and the protective shell 622 and the brake bracket 31 are installed through a tenon and mortise joint.

[0028] Specifically, an arc-shaped limiting groove 383 is recessed on the lower surface of the cam 38 at a position outside the arc-shaped rounded corner groove 381, and the depth of the arc-shaped limiting groove 383 is less than the depth of the arc-shaped rounded corner groove 381.

[0029] In practice, the adjusting component 37 can be a hexagonal nut. Specifically, the upper part of the adjusting component 37 is conical, and the cross-section through its center line is arc-shaped with rounded corners, matching the arc-shaped rounded corner groove 381 on the lower side of the cam 38. The cam 38 is located above the adjusting component 37 and is in rolling connection with it; the adjusting component 37 is located above the brake linkage 36 and is threadedly connected to the upper end of the brake linkage 36.

[0030] In this embodiment, when the suitcase is in the walking state, the upper part of the adjusting component is placed in the arc-shaped rounded corner groove. Since the arc-shaped limiting groove is shallower than the arc-shaped rounded corner groove, when the cam rotates in the positive direction, the contact point between the adjusting component and the cam first moves from the arc-shaped rounded corner groove to the cam surface. The brake linkage first moves downward, causing the upper and lower gears to mesh together and move downward together, thus achieving braking. Finally, the contact point between the adjusting component and the cam moves from the cam surface to the arc-shaped limiting groove, and the upper and lower gears move upward a short distance. In this way, the limiting is achieved without releasing the brake.

[0031] In addition, since the limiting post is located in the groove, when the cam rotates, the side wall of the concave arc will collide with the limiting post, thereby limiting the rotation range of the cam. This prevents the contact point between the adjusting component and the cam from failing to stay in the arc-shaped limiting groove or the arc-shaped rounded corner groove due to excessive rotation of the cam, thus further ensuring the realization of the limiting effect.

[0032] Specifically, a first return spring 371 is sleeved on the outer side of the adjusting member 37, wherein a support platform is protruding on the inner side wall of the limiting sleeve 35, and the lower end of the first return spring 371 is connected to the top surface of the support platform; the lower end of the brake plate 32 and the brake groove are connected by a second return spring 372.

[0033] In this embodiment, when the contact point between the adjusting member and the cam is located within the arc-shaped limiting groove, the upper and lower structures are downward as a whole, and the first and second reset springs are in a compressed state. When the cam rotates in the opposite direction, the contact point between the adjusting member and the cam leaves the arc-shaped limiting groove, and the upper and lower structures are assisted in resetting under the restoring action of the first and second reset springs.

[0034] Specifically, the upper side of the brake plate 32 is provided with an inverted L-shaped groove 321, and the inner side of the brake groove is provided with a locking block 312; the locking block 312 is slidably inserted into the inverted L-shaped groove 321.

[0035] In this embodiment, since the upper end of the adjusting member is rolled between the arc-shaped rounded corner groove and the cam surface outside the arc-shaped rounded corner groove, and the upper end of the adjusting member is conical, when the rotation of the cam controls the displacement of the brake linkage, the brake linkage is in a state of rotating and vertically displacing until the upper and lower gears mesh. Since the upper part of the brake plate has an inverted L-shaped slot, after the upper and lower gears mesh, the upper and lower structures first make a brief vertical displacement, and then return to the state of rotating and vertically displacing until the locking block moves from the vertical part of the inverted L-shaped slot to the horizontal part, thereby locking and ensuring reliable braking.

[0036] This application also provides a trolley case, including a case body 5 and the aforementioned trolley case braking structure. The bottom of the case body 5 has four mounting slots at its four corners, and the trolley case braking structure is installed in each mounting slot.

[0037] Specifically, a mounting housing 1 is provided in the mounting groove, and the pedal arm 22 and the fixing tube 34 are both installed in the mounting housing 1; wherein, the lower end of the fixing tube 34 extends out from the bottom of the mounting housing 1, and the pedal 21 extends out from the side of the mounting housing 1.

[0038] In implementation, the brake structures of the trolley case within the two mounting slots in the width direction of the case 5 constitute a brake group. The two brake structures in the same brake group are symmetrically arranged, with the trigger mechanism located on the inner side of the mounting slot and the brake mechanism located on the outer side of the mounting slot. A support arm 251 is provided on the lower side of the trigger housing 25, and the two support arms 251 in the same brake group are connected together by a connecting shaft. Thus, only one pedal 21 needs to be pressed to control both caster mechanisms and achieve the braking effect.

[0039] Specifically, the connecting shaft sleeve is provided with a crossbeam 28.

[0040] Specifically, the bottom of the footrest 22 is provided with a base 27, which is hinged to the mounting housing 1 via a hinge shaft.

[0041] It should be noted that, for the purpose of facilitating understanding of this embodiment in conjunction with the accompanying drawings, Figure 2 and Figure 3 These are two brake structures for the same brake assembly, one for each of the two luggage cases. Figure 2 The structure in this case is a brake structure on one side of the luggage without a pedal, foot arm, clamp, and trigger lever. Figure 3 The structure is a one-sided luggage brake structure with a pedal, foot arm, clamp, and trigger lever.

[0042] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A braking structure for a suitcase, characterized in that, Includes a mounting housing, on which a triggering mechanism, a braking mechanism, and a caster mechanism are installed; The triggering mechanism includes a pedal, which is rotatably mounted inside the mounting housing; one end of the pedal is connected to a foot arm, and a clamping plate is provided on the side of the upper surface of the foot arm away from the pedal. An arc-shaped clamping groove is provided on the top of the clamping plate, and a trigger rod is provided in the arc-shaped clamping groove. The trigger rod is fixedly connected to the triggering housing, and an operating lever is also fixedly connected to the triggering housing. The braking mechanism includes an upper structure and a lower structure. The lower structure includes a ring-shaped brake frame with a brake groove recessed inward. A brake plate is slidably disposed within the brake groove, and a lower toothed plate is disposed at the upper end of the brake plate. The upper structure includes a fixed tube, a limiting sleeve disposed within the fixed tube, and a brake linkage slidably disposed within the limiting sleeve. An upper toothed plate that can mesh with the lower toothed plate is disposed at the lower end of the brake linkage. An adjusting member is connected to the upper end of the brake linkage, and the upper end of the adjusting member is rotatably connected to a cam. The cam is rotatably mounted within the fixed tube, and the operating lever passes through the fixed tube and is connected to the cam. The caster mechanism includes a cylindrical wheel seat, with wheels rotatably mounted on both sides of the wheel seat. The wheels include an outer traveling wheel and an inner brake wheel. The brake bracket is mounted on the outer side of the wheel seat. The lower side of the brake plate has an arc surface that abuts against the surface of the brake wheel. The wheel seat, brake wheel, and travel wheel are coaxially mounted, and the diameter of the travel wheel is larger than the diameter of the brake wheel; the brake bracket is sleeved with the wheel seat through a collar opened inside it.

2. The suitcase braking structure according to claim 1, characterized in that, The upper part of the adjusting component is conical, and the lower end of the cam has an arc-shaped rounded groove. The upper end of the adjusting component is rolled between the arc-shaped rounded groove and the cam surface outside the arc-shaped rounded groove. The upper end of the cam has a concave arc. A limit post is provided inside the fixed tube, and the limit post is located inside the concave arc. The lower part of the limiting sleeve is equipped with a main bearing, and the upper structure and the lower structure are rolledly connected by the main bearing.

3. The suitcase braking structure according to claim 2, characterized in that, An arc-shaped limiting groove is recessed on the lower surface of the cam at a position outside the arc-shaped rounded corner groove, and the depth of the arc-shaped limiting groove is less than the depth of the arc-shaped rounded corner groove.

4. The suitcase braking structure according to claim 1, characterized in that, The adjusting component is fitted with a first return spring on its outer side. A support platform is protruding from the inner side wall of the limiting sleeve. The lower end of the first return spring is connected to the top surface of the support platform. The lower end of the brake plate and the brake groove are connected by a second return spring.

5. The suitcase braking structure according to claim 4, characterized in that, The upper side of the brake plate is provided with an inverted L-shaped groove, and a locking block protrudes from the inner side of the brake groove; the locking block can be slidably inserted into the inverted L-shaped groove.

6. A rolling suitcase, comprising a suitcase body, characterized in that, It also includes a suitcase braking structure as described in any one of claims 1-5, wherein four mounting slots are respectively provided at the four corners of the bottom of the suitcase, and the suitcase braking structure is installed in each mounting slot.

7. The suitcase according to claim 6, characterized in that, The mounting slot is provided with a mounting housing, and the pedal arm and the fixing tube are both installed inside the mounting housing; wherein, the lower end of the fixing tube protrudes from the bottom of the mounting housing, and the pedal protrudes from the side of the mounting housing.

8. The suitcase according to claim 7, characterized in that, The bottom of the pedal arm is provided with a base, which is hinged to the mounting housing via a hinge shaft.

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