A brake device for a trolley and a trolley thereof
By cooperating with the brake handle assembly and linkage mechanism, the labor-saving braking and parking functions are achieved, solving the problem of quick stopping and parking of handcarts, and improving safety and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI A CARRIER INTELLIGENT EQUIP
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-24
AI Technical Summary
Existing handcart braking devices require considerable force to achieve rapid stopping and cannot achieve parking braking, resulting in safety hazards, and the braking components are prone to damage and failure.
The brake handle assembly, through the linkage mechanism, works in conjunction with the brake cable assembly and spring bracket assembly, utilizing the lever principle to achieve effortless braking and parking functions. The braking and parking functions are achieved by the rebound and release of the stretched spring.
It enables safe parking at any location, prevents the cart from rolling away or spinning in place, improves the safety of the handcart and the durability of the device, and is suitable for operation by people of different ages.
Smart Images
Figure CN224546063U_ABST
Abstract
Description
Technical fields:
[0001] This utility model belongs to the field of vehicle equipment technology, and in particular relates to a braking device for a handcart and the handcart thereof. Background technology:
[0002] Currently, the braking system for strollers requires the user to actively squeeze the brake lever, which in turn moves the brake cable, pulling the caliper to achieve braking. This means that the user needs considerable force to stop the stroller quickly, which is disadvantageous for children or women. Furthermore, the current design lacks a parking brake; if the stroller is parked on a slope and the lever is released, it can easily roll away or spin in circles, posing a safety hazard. Since brake levers are generally non-metallic, they are prone to damage over time. Once damaged, the braking function ceases, leaving the stroller uncontrollably. Utility Model Content:
[0003] This invention aims to overcome the shortcomings of the prior art and provide a braking device for a handcart and the handcart thereof. The braking device, through the linkage mechanism of the brake handle assembly, makes braking and releasing more effortless, allowing even operators with less strength to easily brake and park the handcart at full power.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0005] A braking device for a handcart includes: a caliper wheel assembly, a brake handle assembly 3, a brake cable assembly 4, and a spring bracket assembly 5. The brake handle assembly 3 is connected to the caliper wheel assembly via the brake cable assembly 4. The caliper wheel assembly includes: a first caliper wheel assembly 1 and a second caliper wheel assembly 2. The spring bracket assembly 5 is mounted on the brake handle assembly 3, and the brake cable assembly 4 is sleeved on the spring bracket assembly 5. When the brake handle assembly 3 is released, the tension spring rebounds, and the brake handle assembly is pulled back by the spring. The tension spring 37 pulls the brake cable assembly 4 to grip the brake caliper 14, thereby realizing the function of releasing the brake and parking.
[0006] Preferably, the first caliper wheel assembly 1 and the second caliper wheel assembly 2 have the same structure. The first caliper wheel assembly 1 includes a caliper bracket 11 fixed to the handcart. A wheel 12 is installed in the concave part of the caliper bracket 11. A brake pad 13 that rotates coaxially is installed on the wheel 12. A caliper 14 is installed on the brake pad 13 by bolt fasteners. The caliper 14 is fixed to the inner side of the caliper bracket.
[0007] Preferably, the brake lever assembly 3 includes: a first lever connecting rod 31, a second lever connecting rod 32, a connecting rod joint 33, a lever shaft 34, a tension spring fixing bracket 35, a bearing seat assembly 36, a tension spring 37, and bolt fasteners. A silicone tube sleeve 38 is fitted onto the first lever connecting rod 31. The first lever connecting rod 31 is connected to the connecting rod joint 33 through the second lever connecting rod 32. The lever shaft 34, passing through the second lever connecting rod, is installed between the two bearing seat assemblies 36. The bearing seat assemblies 36 are fixedly installed on the vehicle frame. The two lever shafts 34... Each end is fitted with a connecting rod connector 33 installed on the second handle connecting rod 32. A tension spring fixing bracket 35 is installed in the middle of the handle shaft 34. One end of the tension spring fixing bracket 35 is connected to the upper part of the brake cable 42, and the other end of the tension spring fixing bracket 35 is movably hinged to the tension spring 37. The first handle connecting rod 31, the second handle connecting rod 32, the connecting rod connector 33, and the handle shaft 34 form a linkage mechanism. The linkage mechanism is hinged to the bearing seat assembly 36. By using the lever linkage mechanism to press or rebound, the tension spring is driven to pull open or release the brake cable assembly to achieve parking.
[0008] Preferably, the brake cable assembly 4 includes a brake cable fixing bracket 41 fixed to the handcart, a brake cable 42, a cable pass screw 43, and bolt fasteners. The brake cable fixing bracket 41 has a brake cable through hole, and the cable pass screw 43 is sleeved on the upper part of the brake cable 42. One end of the brake cable 42 is detachably connected to the tension spring fixing bracket 35, and the other end of the brake cable 42 is detachably connected to the caliper 14. Pressing down the first handle connecting rod 31 drives the handle rotating shaft 34 to rotate, pulling the tension spring 37 and releasing the brake cable; conversely, the tension spring releases and the brake cable tightens.
[0009] Preferably, the gate line is a one-to-two gate line.
[0010] Preferably, the spring bracket assembly 5 includes a spring bracket 51, which has a waist-shaped fixing hole 52 for fine-tuning fasteners. The spring bracket 51 is fixed to the vehicle frame by a bracket fixing member. The bracket fixing member is connected to the spring bracket 51 by a tension spring adjusting screw. A tension spring 37 is connected to the lower part of the spring bracket 51. The brake cable fixing bracket 41 is fixed to the vehicle frame by the bracket fixing member.
[0011] Preferably, pressing the first handle linkage 31 of the brake handle assembly 3 causes the handle shaft 34 to rotate, pulling the tension spring 37, releasing the first-to-second brake cable, causing the caliper 14 to release the brake pad 13, disengaging the wheel brake, and allowing the handcart to move; conversely, by releasing the brake handle assembly 3, the tension spring 37 rebounds, the brake handle assembly 3 is pulled back by the tension spring, the brake cable 42 tightens, causing the caliper 14 to grip the brake pad 13, and the wheel is braked.
[0012] Secondly, this utility model provides a handcart, including: a frame, on which a braking device as described above is installed.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] Compared to traditional braking mechanisms, this invention combines handbrake and parking functions into one, allowing for parking and braking at any position during trolley use to prevent rollover and significantly improve trolley safety. This braking device ensures proper operator control; in case of operator error, the trolley will immediately stop, preventing it from spinning or rolling, thus ensuring the safety of the user and bystanders. The device is highly adaptable, compact, and simple in structure; its effectiveness will be even more pronounced when applied to electric trolleys. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the handcart braking device of this utility model;
[0016] Figure 2 This is a partially enlarged view of the braking device for a handcart according to this utility model;
[0017] Figure 3 This is a schematic diagram of the first caliper wheel assembly of the present invention for a handcart braking device;
[0018] Figure 4 This is a schematic diagram of the second caliper wheel assembly of the present invention for a handcart braking device;
[0019] Figure 5 This is a schematic diagram of the brake handle assembly for a handcart braking device according to the present invention;
[0020] Figure 6 This is a schematic diagram of the brake cable assembly for a handcart braking device according to the present invention;
[0021] Figure 7 This is a partially enlarged schematic diagram of the brake cable assembly for the handcart braking device of this utility model;
[0022] Figure 8 This is a schematic diagram of the spring bracket assembly for the handcart braking device of this utility model;
[0023] Figure 9 This is a schematic diagram of the tension spring and spring bracket assembly used in the handcart braking device of this utility model. Detailed Implementation
[0024] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0025] like Figure 1 As shown, a braking device for a handcart includes: a caliper wheel assembly, a brake handle assembly 3, a brake cable assembly 4, and a spring bracket assembly 5. The brake handle assembly 3 is connected to the caliper wheel assembly via the brake cable assembly 4. The caliper wheel assembly includes: a first caliper wheel assembly 1 and a second caliper wheel assembly 2. The spring bracket assembly 5 is mounted on the brake handle assembly 3 (e.g., ...). Figure 2 The spring bracket assembly 5 is fitted with the brake cable assembly 4; when the brake handle assembly 3 is released, the tension spring rebounds, the brake handle assembly is pulled back by the spring, and the tension spring 37 pulls the brake cable assembly 4 to hold the brake caliper 14, thereby realizing the release of the brake and parking functions.
[0026] Preferred, such as Figure 3 , 4 As shown, the first caliper wheel assembly 1 and the second caliper wheel assembly 2 have the same structure. The first caliper wheel assembly 1 includes a caliper bracket 11 fixed to the handcart. A wheel 12 is installed in the concave part of the caliper bracket 11. A brake pad 13 that rotates coaxially is installed on the wheel 12. A caliper 14 is installed on the brake pad 13 by bolt fasteners. The caliper 14 is fixed to the inner side of the caliper bracket.
[0027] Preferred, such as Figure 5As shown, the brake lever assembly 3 includes: a first lever connecting rod 31, a second lever connecting rod 32, a connecting rod joint 33, a lever shaft 34, a tension spring fixing bracket 35, a bearing seat assembly 36, a tension spring 37, and bolt fasteners. A silicone tube sleeve 38 is fitted onto the first lever connecting rod 31. The first lever connecting rod 31 is connected to the connecting rod joint 33 through the second lever connecting rod 32. The lever shaft 34, which passes through the second lever connecting rod, is installed between the two bearing seat assemblies 36. The bearing seat assemblies 36 are mounted on the vehicle frame. The two ends of the lever shaft 34... Each lever is fitted with a connecting rod connector 33 mounted on the second handle connecting rod 32. A tension spring fixing bracket 35 is installed at the middle position of the handle shaft 34. One end of the tension spring fixing bracket 35 is connected to the upper part of the brake cable 42, and the other end of the tension spring fixing bracket 35 is movably hinged to the tension spring 37. The first handle connecting rod 31, the second handle connecting rod 32, the connecting rod connector 33, and the handle shaft 34 form a linkage mechanism. The linkage mechanism is hinged to the bearing seat assembly 36. By using the lever linkage mechanism to press or rebound, the tension spring is pulled open or released from the brake cable assembly to achieve parking. The bearing seat assembly 36 is an L-shaped bearing seat assembly. The bottom of the L-shaped bearing seat assembly is fixed to the frame, and the connecting rod connector 33 passes through the side of the L-shaped bearing seat assembly.
[0028] Preferred, such as Figure 6 , 7 As shown, the brake cable assembly 4 includes a brake cable fixing bracket 41 fixed to the vehicle frame, a brake cable 42, a cable guide screw 43, and bolt fasteners. The brake cable fixing bracket 41 has a brake cable through hole, and the cable guide screw 43 is sleeved on the upper part of the brake cable 42. One end of the brake cable 42 is detachably connected to the tension spring fixing bracket 35, and the other end of the brake cable is detachably connected to the caliper 14. The brake cable is a one-to-two brake cable.
[0029] Preferred, such as Figure 8 , 9 As shown, the spring bracket assembly 5 includes a spring bracket 51. The spring bracket is provided with a waist-shaped fixing hole 52 for fine-tuning fasteners. The spring bracket 51 is fixed to the vehicle frame by a bracket fixing member. The bracket fixing member is connected to the spring bracket 51 by a tension spring adjusting screw. A tension spring 37 is connected to the lower part of the spring bracket 51. The brake cable fixing bracket 41 is fixed to the vehicle frame by the bracket fixing member.
[0030] Preferably, pressing the first handle linkage 31 of the brake handle assembly 3 causes the handle shaft 34 to rotate, pulling the tension spring 37, releasing the first-to-second brake cable, causing the caliper 14 to release the brake pad 13, disengaging the wheel brake, and allowing the handcart to move; conversely, by releasing the brake handle assembly 3, the tension spring 37 rebounds, the brake handle assembly 3 is pulled back by the tension spring, the brake cable 42 tightens, causing the caliper 14 to grip the brake pad 13, and the wheel is braked.
[0031] Preferably, in the walking operation: when the handcart brake device is pressed, the tension spring 37 is stretched, the one-to-two brake cable is retracted, the caliper 14 releases the brake pad 13, the wheel brake is released, and the handcart is pushed to move; in the parking operation: when the handcart brake device is released, the tension spring 37 rebounds, the brake handle assembly 3 is pulled back by the tension spring, the one-to-two brake cable 42 is tightened, the caliper 14 grips the brake pad 13, the wheel is braked, and the handcart is braked to park.
[0032] This invention addresses the safety hazards posed by the frequent spinning or rolling of handcarts after they stop during use, improving the safety of handcart use and solving the braking problem for subsequent development of electric handcarts. The brake handle assembly, through the use of a linkage mechanism and an L-shaped bearing seat, offers smooth operation and high durability. The lever action achieved through the extended handle's linkage mechanism and spring makes it easy to press, suitable for people of all ages, unlike traditional brakes which require force to operate and are not suitable for those with less strength.
[0033] Brake Handle Assembly Operation Instructions: The main switch and battery are located on the lower layer of the trolley. Turning the main switch on / off corresponds to powering on / off the trolley. To prepare for operation, turn on the main switch to power the entire trolley. Set the knob to position 1 in electric mode. The current speed setting is 0.9 m / s. Press the brake handle assembly down to its final position, triggering the microswitch and starting the trolley. During the pressing process, the handle shaft rotates to loosen / tighten the brake cable. The simulated path of the brake cable is shown (actual path may vary). The tension spring provides reverse tension. The brake handle has two hinge points; the brake cable and tension spring are fixed in the middle of the handle linkage, ensuring even force distribution on both sides of the handle. The tension spring's initial position is adjusted by moving it up and down via a bolt on spring bracket 51. After the trolley is adjusted, the bolt position is fixed and no further adjustment is needed.
[0034] Brake lever assembly: Pressing the brake lever releases the brake, allowing the trolley to move; releasing the brake lever resets it under the action of the counter-tension spring, locking the trolley. The caliper travel is 20mm, the braking force is approximately 60N, the brake lever operating pressure is approximately 20N, and the brake lever's up-and-down travel is approximately 140mm. Trolley steering: In both electric and manual modes, turning is performed by the operator.
[0035] Example 2 Based on the foregoing embodiments, this utility model also proposes a handcart, including: a frame, on which a braking device as described above is installed.
[0036] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A braking device for a handcart, comprising: The caliper wheel assembly, brake handle assembly (3), brake cable assembly (4), and spring bracket assembly (5) are characterized in that the brake handle assembly (3) is connected to the caliper wheel assembly via the brake cable assembly (4), the spring bracket assembly (5) is mounted on the brake handle assembly (3), and the brake cable assembly (4) is sleeved on the spring bracket assembly (5); when the brake handle assembly (3) is released, the tension spring rebounds, the brake cable assembly is pulled back by the tension spring, and the brake cable assembly (4) is pulled by the tension spring (37) to hold the brake caliper (14), and the handcart is parked.
2. The braking device for a handcart according to claim 1, characterized in that, The caliper wheel assembly includes: a first caliper wheel assembly (1) and a second caliper wheel assembly (2) with the same structure. The first caliper wheel assembly (1) includes a caliper bracket (11) fixed to the handcart. A wheel (12) is installed in the concave part of the caliper bracket (11). A brake pad (13) that rotates coaxially is installed on the wheel (12). A caliper (14) is installed on the brake pad (13) by bolt fasteners. The caliper (14) is fixed to the inner side of the caliper bracket.
3. The braking device for a handcart according to claim 2, characterized in that, The brake handle assembly (3) includes: a first handle connecting rod (31), a second handle connecting rod (32), a connecting rod joint (33), a handle pivot (34), a tension spring fixing bracket (35), a bearing seat assembly (36), and a tension spring (37). A silicone tube sleeve (38) is fitted onto the first handle connecting rod (31). The first handle connecting rod (31) is connected to the connecting rod joint (33) through the second handle connecting rod (32). The handle pivot (34), which passes through the second handle connecting rod, is installed between the two bearing seat assemblies (36). Between, the bearing housing assembly (36) is fixedly installed on the frame, and each end of the handle shaft (34) is fitted with a connecting rod joint (33) installed on the second handle connecting rod (32). A tension spring fixing bracket (35) is installed in the middle of the handle shaft (34), and one end of the tension spring fixing bracket (35) is movably hinged to the tension spring (37). The first handle connecting rod (31), the second handle connecting rod (32), the connecting rod joint (33) and the handle shaft (34) form a linkage mechanism, and the linkage mechanism is hinged to the bearing housing assembly (36).
4. The braking device for a handcart according to claim 1, characterized in that, The brake cable assembly (4) includes a brake cable fixing bracket (41) fixed to the handcart, a brake cable (42), and a cable screw (43). The brake cable fixing bracket (41) has a brake cable through hole, and the cable screw (43) is sleeved on the upper part of the brake cable (42). One end of the brake cable (42) is detachably connected to the tension spring fixing bracket (35), and the other end of the brake cable (42) is detachably connected to the caliper (14).
5. The braking device for a handcart according to claim 4, characterized in that, The gate line is a one-to-two gate line.
6. The braking device for a handcart according to claim 1, characterized in that, The spring bracket assembly includes a spring bracket (51), which has a waist-shaped fixing hole (52) for fine-tuning fasteners. The spring bracket (51) is fixed to the vehicle frame by a bracket fixing member. The bracket fixing member is connected to the spring bracket (51) by a tension spring adjusting screw. A tension spring (37) is connected to the lower part of the spring bracket (51). The brake cable fixing bracket (41) is fixed to the vehicle frame by the bracket fixing member.
7. The braking device for a handcart according to claim 6, characterized in that, Pressing the first handle linkage (31) of the brake handle assembly (3) causes the handle shaft 34 to rotate, pulling up the tension spring (37), releasing the brake cable (42), and causing the caliper (14) to release the brake pad (13), thus releasing the wheel brake and allowing the handcart to move. Conversely, releasing the first handle linkage (31) of the brake handle assembly (3) causes the tension spring (37) to rebound, pulling the brake handle assembly (3) back, tightening the brake cable (42), causing the caliper (14) to grip the brake pad (13), and braking the wheel.
8. A handcart, characterized in that, include: A handcart body, wherein a braking device as described in any one of claims 1-7 is installed on the handcart body.