Wheelchair electric tow head and frame connection and fixing device

Abstract

This invention provides a device for connecting and fixing an electric tow head to a wheelchair frame, including a sleeve and a clamp. The sleeve is detachably and vertically fixed to the upright of the frame, and a support column protrudes radially from the sleeve. The clamp is mounted on the electric tow head and has clamping arms whose shape matches the outer contour of the support column, thereby connecting the electric tow head to the frame through the clamping action of the clamping arms. The sleeve's detachable vertical fixation to the upright of the frame and the radially protruding support column allow the electric tow head to be securely clamped to the support column of the sleeve when it is necessary to connect it to the frame. This does not affect the detachable connection between the tow head and the frame, and provides greater flexibility in the connection. The upright of the frame has sufficient strength to ensure the stability of the connection between the electric tow head and the frame, as well as the safety of use. The detachable connection between the sleeve and the upright of the frame also facilitates storage.

Claims

1. A device for connecting and fixing an electric tow head to a wheelchair frame, wherein: It includes a sleeve and a clamp. The sleeve is detachably and vertically fixed on the upright of the frame. The sleeve has a radially protruding support column. The clamp is set on the electric tractor head and has a clamping arm. The shape of the clamping arm matches the outer contour shape of the support column so as to connect the electric tractor head to the frame by clamping the support column through the clamping action of the clamping arm.

2. The wheelchair electric tow head and frame connection and fixing device as described in claim 1, wherein: It also includes fastening bolts. The sleeve includes a first arc-shaped block and a second arc-shaped block. The first arc-shaped block and the second arc-shaped block are radially provided with threaded through holes. The first arc-shaped block and the second arc-shaped block are clamped onto the upright of the frame and fixed by fastening bolts in conjunction with the threaded through holes. The support column is set on the first arc-shaped block or the second arc-shaped block and faces the outside of the wheelchair.

3. The wheelchair electric tow head and frame connection and fixing device as described in claim 2, wherein: The support column is integrally formed and installed on the first arc-shaped block or the second arc-shaped block.

4. The wheelchair electric tow head and frame connection and fixing device as described in claim 1, wherein: The radial cross-section of the support column is rhomboid.

5. The wheelchair electric tow head and frame connection and fixing device as described in claim 4, wherein: The clamp has a clamping part at the position where the clamping arm contacts the support column, and the shape of the clamping part matches the outer contour shape of the support column.

6. The wheelchair electric tow head and frame connection and fixing device as described in claim 5, wherein: The angle of the cross section of the clamping part along the opening and closing direction of the clamping arm is an acute angle.

7. The wheelchair electric tow head and frame connection and fixing device as described in claim 5, wherein: The clamping part is equipped with anti-slip pads or a rubber buffer layer.

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