Handbrake structure of a walking aid

Abstract

This invention discloses a handbrake structure for a walking aid, relating to the field of walking aid technology. It includes a support arm, a brake lever, and a transmission body. A first support arm has a first limiting part, and a second support arm has a second limiting part. One end of the brake lever is located between the first and second support arms. The brake lever has a first abutment part facing the first support arm and a second abutment part facing the second support arm. The first abutment part abuts against the inner side of the first limiting part, and the second abutment part abuts against the inner side of the second limiting part. The transmission body is connected to the brake lever and is used to drive the brake components to apply the brakes. When the brake lever is lifted upwards, it causes the first abutment part to swing inwards around the abutment point of the second abutment part. When the brake lever is pressed inwards, it causes the second abutment part to swing inwards around the abutment point of the first abutment part. A blocking member is used to prevent the second abutment part from swinging back, thus stopping the vehicle. This invention has a simple structure and better reliability.

Claims

1. A handbrake structure for a walking aid, wherein: The system includes a support arm, a brake lever, a transmission body, and a blocking component. The support arm includes a first support arm and a second support arm, which are fixed and spaced apart. The first support arm has a first limiting part, and the second support arm has a second limiting part. The first limiting part and the second limiting part face each other. One end of the brake lever is located between the first support arm and the second support arm. This end of the brake lever has a first abutment part facing the first support arm and a second abutment part facing the second support arm. The first abutment part abuts against the inside of the first limiting part, and the second abutment part abuts against the inside of the second limiting part. The other end of the brake lever extends from between the first limiting part and the second limiting part, extending out from the first support arm and the second support arm. The transmission body is connected to one end of the brake lever located between the first and second arms. The transmission body is used to drive the brake components to brake. When the brake lever swings towards the first arm, it can drive the first abutment part to swing inward around the abutment point of the second abutment part, so that the transmission body drives the brake components to brake. When the brake lever swings towards the second arm, it can drive the second abutment part to swing inward around the abutment point of the first abutment part, so that the transmission body drives the brake components to brake. A blocking member is provided on the second arm. The blocking member is used to prevent the second abutment part from swinging back towards the second limiting part, so that the brake components continue to maintain the braking state, thereby stopping the vehicle.

2. A handbrake structure for a walking aid as described in claim 1, wherein: The transmission body is a hydraulic cylinder. The first and second arms are fixed on both sides of the hydraulic cylinder. The hydraulic cylinder is located inside the first and second limiting parts and is spaced apart from them. A piston rod is inserted into the hydraulic cylinder. The piston rod can move in the direction of insertion or withdrawal from the hydraulic cylinder. The end of the piston rod away from the hydraulic cylinder is pivotally connected to the middle of the end of the brake handle located between the first and second arms. The end of the piston inserted into the hydraulic cylinder and the bottom of the cylinder are filled with oil and connected to the brake component through an oil circuit to form a hydraulic brake. If either the first or second abutment part swings inward, the end of the brake handle located between the first and second arms can press the piston to move in the direction of insertion into the hydraulic cylinder, thereby pressing the oil in the hydraulic cylinder into the brake component to perform braking.

3. A handbrake structure for a walking aid as described in claim 2, wherein: A first spring is provided between the end of the piston rod inserted into the oil cylinder and the bottom of the oil cylinder. The first spring is used to elastically push the piston rod to move in the direction of pulling out of the oil cylinder, so as to push the first abutment part to swing back towards the first limit part and the second abutment part to swing back towards the second limit part.

4. A handbrake structure for a walking aid as described in claim 1, wherein: The first and second limiting parts are hook-shaped, and the first abutting part is hook-shaped to fit the first limiting part. The second abutting part and the second limiting part are hook-shaped to fit each other. When the first abutting part abuts against the inside of the first limiting part and the second abutting part abuts against the inside of the second limiting part, the first abutting part and the first limiting part are engaged with each other. When the first abutting part swings inward, the second abutting part hooks onto the second limiting part. When the second abutting part swings inward, the first abutting part hooks onto the first limiting part.

5. A handbrake structure for a walking aid as described in claim 1, wherein: The distance between the first arm and the second arm gradually increases from the end away from the first and second limiting portions toward the end closer to the first and second limiting portions. At the same time, the first abutment abuts against the inside of the first limiting portion and the second abutment abuts against the inside of the second limiting portion. The first abutment abuts against the side of the first arm facing the second arm, and the second abutment abuts against the side of the second arm facing the first arm, so as to limit the movement of the first abutment and the second abutment towards the inside of the first and second limiting portions at the same time.

6. A handbrake structure for a walking aid as described in claim 5, wherein: The opposing sides of the first and second arms are arc-shaped. When the first abutment rotates inward, the first abutment abuts against the side of the first arm facing the second arm and moves along the side of the first arm facing the second arm. When the second abutment rotates inward, the second abutment abuts against the side of the second arm facing the first arm and moves along the side of the second arm facing the first arm.

7. A handbrake structure for a walking aid as described in claim 1, wherein: The blocking component includes a tube, a spherical stop, and a second spring. The second arm has a channel, and the tube is detachably installed in the channel. The tube has a receiving cavity with an opening. When the tube is installed in the channel, the opening of the receiving cavity is flush with the side wall of the second arm facing the first arm. The spherical stop is installed in the receiving cavity, and the opening of the receiving cavity allows only a portion of the spherical surface of the spherical stop to protrude from the receiving cavity, thus protruding from the side wall of the second arm facing the first arm. The second spring is located between the spherical stop and the bottom of the receiving cavity to elastically push the spherical stop towards the opening.

8. A handbrake structure for a walking aid as described in claim 1, wherein: The handbrake mechanism is located at the handlebar of the mobility scooter. One end of the brake lever extends from between the first and second arms and is located beside the handlebar, spaced apart from it. When the brake lever swings away from the handlebar, it rotates towards the second arm, causing the second abutment to rotate inward and away from the second limiter, thereby driving the transmission component to drive the brake component to brake. The blocking part can prevent the second abutment from swinging back towards the second limiter, thus parking the vehicle. When the brake lever swings towards the handlebar, it rotates towards the first arm, causing the first abutment to rotate inward and away from the first limiter, thereby driving the transmission component to drive the brake component to brake.

9. A handbrake structure for a walking aid as described in claim 8, wherein: It also includes a housing with a mounting cavity inside. The support arm and transmission body are fixed in the mounting cavity. One end of the brake lever is located between the first and second support arms in the mounting cavity, and the other end extends out of the mounting cavity. The grip is set on the housing.

10. A handbrake structure for a walking aid as described in claim 1, wherein: The brake lever is located between the first and second arms. One end of the lever is enlarged to form an enlarged portion. The first and second abutting portions are located on both sides of the enlarged portion. The end of the enlarged portion near the first and second limiting portions extends from between the first and second limiting portions and bends to the side of the second arm to form a constricted section. At the extended end of the constricted section, a ring-shaped hand part is formed for a person to hold in.

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