US 12,263,699 B2
Multi-pedal-controlled caster and method for using caster
Yebing Jie, Fuzhou (CN); and Xiaolin Shen, Fuzhou (CN)
Assigned to Fujian Secure Medical Technology CO., LTD, Fuzhou (CN)
Appl. No. 18/269,612
Filed by Fujian Secure Medical Technology CO., LTD, Fuzhou (CN)
PCT Filed Mar. 3, 2023, PCT No. PCT/CN2023/079479
§ 371(c)(1), (2) Date Jun. 26, 2023,
PCT Pub. No. WO2024/148668, PCT Pub. Date Jul. 18, 2024.
Claims priority of application No. 202310039178.6 (CN), filed on Jan. 12, 2023.
Prior Publication US 2024/0375435 A1, Nov. 14, 2024
Int. Cl. B60B 33/02 (2006.01); B60B 33/00 (2006.01)
CPC B60B 33/021 (2013.01) [B60B 33/0078 (2013.01); B60B 33/02 (2013.01); B60B 33/025 (2013.01); B60B 33/0042 (2013.01); B60B 33/0086 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A multi-pedal-controlled caster, comprising:
a main body support, a connecting rod, an orientation mechanism, a braking mechanism, a reset mechanism, a pair of wheel members and three elastic members,
wherein the main body support is relatively rotatably connected and combined with the connecting rod, an end of the connecting rod extends into the main body support, the end, extending into the main body support, of the connecting rod is fixedly sleeved with a first inner tooth member and a second inner tooth member, a first recess portion is formed in the first inner tooth member, and a second recess portion is formed in the second inner tooth member;
the orientation mechanism comprises a multifunctional pedal and a first warping plate, a first end of the multifunctional pedal has a treading portion, and a first pushing portion and a first abutting portion are formed at a second end of the multifunctional pedal;
a first end of the first warping plate is a first abutted portion, a first clamping portion is formed at a second end of the first warping plate, the first pushing portion of the multifunctional pedal abuts against the first abutted portion, the first clamping portion faces the first recess portion of the first inner tooth member, and when the first warping plate swings, the first clamping portion is clamped into or separated from the first recess portion;
the braking mechanism comprises the multifunctional pedal, an auxiliary braking member and a second warping plate, a first end of the auxiliary braking member has a third abutted portion, and the third abutted portion abuts against a third abutting portion of the multifunctional pedal; a second abutting portion is formed on one side of a second end of the auxiliary braking member, the auxiliary braking member has a second pushing portion located and formed on the other side of the second abutting portion, and the auxiliary braking member and the multifunctional pedal are coaxial and are pivoted to the main body support by means of a third pivot member;
a second abutted portion is formed at a first end of the second warping plate, the second pushing portion of the auxiliary braking member abuts against the second abutted portion, a second clamping portion is formed at a second end of the second warping plate, the second clamping portion faces the second recess portion of the second inner tooth member, when the second warping plate swings, the second clamping portion is clamped into or separated from the second recess portion, and each of two sides of the second warping plate extends to form a third clamping portion;
the reset mechanism comprises an oriented reset pedal and a brake releasing reset pedal, wherein the oriented reset pedal and the brake releasing reset pedal are arranged side by side, the oriented reset pedal and the brake releasing reset pedal of the reset mechanism are coaxial and are pivoted to the main body support by means of a second pivot member, a reset treading portion is arranged at a first end of each of the oriented reset pedal and the brake releasing reset pedal, a fourth abutting portion is formed at a second end of the oriented reset pedal, a fifth abutting portion is formed at a second end of the brake releasing reset pedal, and the fourth abutting portion and the fifth abutting portion face and push the first abutting portion and the second abutting portion;
the pair of wheel members comprises a first side wheel and a second side wheel, a limiting gear is formed on each of sides of the first side wheel and the second side wheel, wherein the sides face each other, the limiting gear has a plurality of tooth grooves, the third clamping portions of the second warping plate face the plurality of tooth grooves, and when the second warping plate swings to different positions, the third clamping portions are buckled into the plurality of tooth grooves, or the third clamping portions are separated from the plurality of tooth grooves; and
the three elastic members comprises a first elastic member, a second elastic member and a third elastic member, the first elastic member is coaxial with the first warping plate and the second warping plate, and one end of the first elastic member abuts against the second warping plate; the second elastic member is coaxial with the oriented reset pedal and the brake releasing reset pedal, a first end of the second elastic member penetrates through the oriented reset pedal and the brake releasing reset pedal respectively, and a second end of the second elastic member abuts against the first warping plate; and the third elastic member penetrates through the coaxial multifunctional pedal and auxiliary braking member, a first end of the third elastic member abuts against the multifunctional pedal, and a second end of the third elastic member abuts below the second warping plate.