Brake mechanism with length compensation function

Abstract

The invention discloses a brake mechanism with a length compensation function. The brake mechanism comprises a frame, a handle mounted at one end of the frame, a brake handle movably mounted on the handle, a brake pad movably mounted on the frame and a brake cable, wherein one end of the brake cable is connected with the brake handle, and the other end of the brake cable is connected with the brake pad; the device is characterized by further comprising a compensation mechanism which is arranged on the frame and used for compensating the length of the brake cable, the compensation mechanism comprises a floating wheel installed on the frame in a floating mode, a fixing rod installed on the frame and a connecting piece which is connected with the fixing rod and the floating wheel and has elasticity, and the brake cable is wound on the floating wheel by at least one circle. Through the arrangement of the compensation mechanism, when tension is applied to the brake cable in the folding process of the four-wheeler and the brake cable needs to be lengthened, the length of the brake cable is automatically compensated, and when length compensation is not needed, the redundant brake cable is automatically wound, so that the redundant brake cable is prevented from being extruded, bent and blocked in the frame to affect braking.

Description

Technical Field

[0001] The invention relates to a brake mechanism for a four-wheel vehicle, in particular to a brake mechanism with a length compensation function. Background Art

[0002] Four-wheeled vehicles can assist walking, also known as four-wheeled walkers, and are designed to help people with limited mobility, such as the elderly, the disabled, or patients undergoing rehabilitation training, to support their walking and standing balance. Four-wheeled vehicles are large in size and inconvenient to carry. In most cases, four-wheeled vehicles are placed in the back seat or trunk of a car, but some small car trunks cannot accommodate four-wheeled vehicles. In addition, the overall size of the four-wheeled vehicle is large, and a large space is required when the vehicle is packed and transported, resulting in a limited loading volume each time, resulting in high transportation costs, especially when shipped abroad, the transportation costs are even higher. For this reason, many manufacturers in the prior art have made the four-wheeled vehicles into foldable forms, which has achieved the purpose of reducing the transportation volume; In order to prevent the brake line from being damaged and for the overall aesthetics, the existing four-wheeled vehicles will have the brake line built into the frame, using an internal wiring method. However, on a folding four-wheeled vehicle, since the frame lights need to be disassembled before the four-wheeled vehicle can be folded, and the frame will generate tension on the brake line when disassembling and folding, the length of the brake line needs to be increased before disassembling and folding, otherwise it cannot be disassembled and folded. If the brake line is set longer in order to be able to disassemble and fold the frame, and the longer part is bent or blocked in the frame, this method will cause the brake line to be bent after the brake handle is gripped to brake, and the brake line will be bent to produce a folded angle, which makes it impossible to pull the brake line to drive the brake pad to perform an internal action, thereby causing brake failure, safety accidents, and great safety hazards. To this end, a brake mechanism with a length compensation function is proposed. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and to provide a brake mechanism with a length compensation function.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a brake mechanism with a length compensation function, comprising a frame, a handle installed at one end of the frame, a brake handle movably installed on the handle, a brake pad movably installed on the frame, and a brake line connected to the brake handle at one end and to the brake pad at the other end; the feature is that it also includes a compensation mechanism arranged on the frame for compensating the length of the brake line, the compensation mechanism includes a floating wheel floatingly installed on the frame, a fixed rod installed on the frame, and a connector connecting the fixed rod and the floating wheel and having elastic force, and the brake line is wound around the floating wheel at least once.

[0005] Further preferably, the floating wheel is provided with a wire groove for winding the brake wire and serving as a limit guide for the brake wire.

[0006] Further preferably, the connecting piece is an elastic rope or elastic wire or rubber ring with elastic force.

[0007] Further preferably, a connecting hole for connecting the connecting member is provided on the floating wheel.

[0008] Further preferably, the brake cable comprises a jacket and a metal wire in the jacket; further comprises a fixing frame mounted on the frame, a connecting sleeve mounted on the fixing frame for connecting the jacket and for the metal wire to pass through, a fixing piece arranged on the brake pad for connecting the metal wire, and a spring installed between the brake pad and the fixing frame.

[0009] Further preferably, it also includes a plurality of protrusions arranged on the brake pad for enhancing friction resistance and improving braking stability.

[0010] Further preferably, the frame is hollow, the floating wheel, the fixing rod and the connecting piece are all in the frame, the brake line is in the frame, and at least one end of the brake line passes through the frame and is connected to the brake pad.

[0011] Further preferably, it also includes a slot provided on the frame for one end of the brake line to pass through the frame and connect with the brake pad.

[0012] The beneficial effects of the present invention are as follows: through the setting of the compensation mechanism, when a pulling force is applied to the brake line during the folding process of the four-wheel vehicle and the brake line needs to be lengthened, the floating wheel is pulled downward by the pulling force, and the floating wheel pulls the connecting piece. During the downward movement of the floating wheel, a certain rotation is generated, thereby releasing the brake line wrapped around the floating wheel, so that the brake line is lengthened, and the brake line length compensation is achieved, so that the four-wheel vehicle can be folded without being restricted by the length of the brake line and causing it to be unable to fold. After the four-wheel vehicle is assembled, the brake line length compensation is no longer required, and no pulling force is applied to the brake line. At this time, the floating wheel is driven by the elastic reset force of the connecting piece to move upward and reset, and at the same time, the excess brake line part is automatically reeled onto the floating wheel. When the brake line length needs to be lengthened, the length compensation is automatically performed, and when no length compensation is required, the excess brake line is automatically reeled in, and the excess brake line is not squeezed and bent and blocked in the frame to affect the brake, or even cause the brake to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a partial structural schematic diagram of the present invention; Figure 3 It is a cross-sectional structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the floating wheel of the present invention.

[0014] Legend: 1. Frame; 2. Handle; 3. Brake handle; 4. Brake pad; 41. Protrusion; 5. Brake line; 6. Floating wheel; 61. Line groove; 62. Connecting hole; 7. Fixing rod; 8. Connecting piece; 9. Fixing frame; 91. Connecting sleeve; 92. Fixing piece; 93. Spring; 10. Empty slot. DETAILED DESCRIPTION

[0015] Next, we will further explain the brake mechanism with length compensation function of the present invention with reference to the accompanying drawings.

[0016] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0017] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense; for example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1-Figure 4 As shown in the figure, a brake mechanism with a length compensation function comprises a frame 1, a handle 2 mounted at one end of the frame 1, a brake handle 3 movably mounted on the handle 2, a brake pad 4 movably mounted on the frame 1, and a brake line 5 connected to the brake handle 3 at one end and to the brake pad 4 at the other end; the brake line 5 is characterized in that it also comprises a compensation mechanism arranged on the frame 1 to compensate for the length of the brake line 5, the compensation mechanism comprising a floating wheel 6 floatingly mounted on the frame 1, a fixed rod 7 mounted on the frame 1, and a fixed rod 7 connecting the fixed rod 7 and the floating wheel 6 and having The vehicle frame preferably has a hollow structure, the brake line 5 preferably passes through the vehicle frame 1 and at least one end passes through the vehicle frame to connect with the brake handle 3 and the other end is connected with the brake pad 4. The floating wheel 6, the fixing rod 7 and the connecting member 8 are preferably arranged in the vehicle frame 1, and also include a slot 10 arranged on the vehicle frame 1 for one end of the brake line 5 to pass through the frame 1 and connect with the brake pad 4. Through the arrangement of the slot 10, the brake line 5 built in the vehicle frame 1 is extended to the outside of the frame 1 and connected with the brake pad 4. By setting the compensation mechanism, when the brake line 5 is applied with tension during the folding process of the four-wheel vehicle and the brake line 5 needs to be stretched, the floating wheel 6 is pulled downward by the tension, and the floating wheel 6 pulls the connecting piece 8. The floating wheel 6 rotates to a certain extent during the downward movement, thereby releasing the brake line 5 wound on the floating wheel 6, so that the brake line 5 is stretched, and the length of the brake line 5 is compensated, so that the four-wheel vehicle can be folded without being restricted by the length of the brake line 5 and causing it to be unable to fold. After the four-wheel vehicle is assembled, the length compensation of the brake line 5 is no longer needed, and no tension is applied to the brake line 5. At this time, the connecting piece 8 is used to The elastic restoring force drives the floating wheel 6 to move upward and reset, and at the same time, the excess brake line 5 is automatically wound onto the floating wheel 6. When the length of the brake line 5 needs to be lengthened, the length compensation is automatically performed. When the length compensation is not required, the excess brake line 5 is automatically wound up without causing the excess brake line 5 to be squeezed and bent and blocked in the frame 1 to affect the braking. In addition, the setting of the floating wheel 6 is adopted, and the brake line 5 is wound around the floating wheel 6 in a circle, and the entire brake line 5 will not have a folded corner. Therefore, when the brake handle 3 is gripped to brake, the problem of being unable to drive the brake pad 4 to move will not occur, and the safety is high.

[0019] In one embodiment, the floating wheel 6 is provided with a wire groove 61 for winding the brake wire 5 and limiting and guiding the brake wire 5; the wire groove 61 is provided to limit and guide the brake wire 5 when it is wound around the floating wheel 6.

[0020] In one embodiment, the connecting member 8 is an elastic rope or elastic wire or a rubber ring with elastic force.

[0021] In one embodiment, a connecting hole 62 for connecting the connecting member 8 is provided on the floating wheel 6. Through the setting of the connecting hole 62, when the floating wheel 6 is connected through the connecting member 8, the connection is made by passing through the connecting hole 62, and at the same time, it will not cause interference to the brake line 5 wound around the floating wheel 6.

[0022] In one embodiment, the brake cable 5 comprises a jacket and a metal wire in the jacket; further comprises a fixing frame 9 mounted on the frame 1, a connecting sleeve 91 mounted on the fixing frame 9 for connecting the jacket and for the metal wire to pass through, a fixing member 92 disposed on the brake pad 4 for connecting the metal wire, and a spring 93 mounted between the brake pad 4 and the fixing frame 9; When driving the brake pad 4 to brake, the metal wire is pulled by holding the brake handle 3, and the metal wire pulls the brake pad 4 to rotate. One side of the brake pad 4 contacts the wheel to brake, and the other side squeezes the spring 93. When the brake handle 3 is released, the brake pad 4 is reset by the reset force of the spring 93.

[0023] In one embodiment, it further includes a plurality of protrusions disposed on the brake pad 4 for enhancing friction resistance and improving braking stability; By providing a plurality of protrusions 41 on the brake pad 4, when the brake pad 4 contacts the wheel, multiple contacts are formed through the multiple protrusions 41, thereby increasing the friction resistance and improving the braking stability.

[0024] When the present invention is in use: when the four-wheel vehicle needs to be disassembled, assembled, and folded, when the frame 1 is disassembled and folded, the brake line 5 in the frame 1 is pulled, and the brake line 5 acts on the floating wheel 6 after being pulled, and the floating wheel 6 transmits the force to the connecting member 8, pulling the connecting member 8 to elastically stretch downward, and the brake line 5 wound on the floating wheel 6 is released, and the length of the brake line 5 is compensated, so that the frame 1 can be disassembled and folded; When the four-wheel vehicle is assembled, the floating wheel 6 is no longer subjected to the tension of the brake line 5 after the frame 1 is assembled. The connecting member 8 is reset by its own elasticity after being no longer subjected to the tension, driving the floating wheel 6 to reset. When the floating wheel 6 is reset, the part of the brake line 5 used for compensation is wound in the wire groove 61.

[0025] The protection scope of the present invention is not limited to the above embodiments and their variations. Conventional modifications and replacements made by those skilled in the art based on the contents of this embodiment all fall within the protection scope of the present invention.

Claims

1. A brake mechanism with a length compensation function, comprising a frame (1), a handle (2) mounted at one end of the frame (1), a brake handle (3) movably mounted on the handle (2), a brake pad (4) movably mounted on the frame (1), and a brake wire (5) having one end connected to the brake handle (3) and the other end connected to the brake pad (4); wherein the brake wire is characterized in that The invention also comprises a compensation mechanism arranged on the vehicle frame (1) and having a compensating effect on the length of the brake line (5), the compensation mechanism comprising a floating wheel (6) floatingly mounted on the vehicle frame (1), a fixing rod (7) mounted on the vehicle frame (1), and a connecting member (8) having elastic force connecting the fixing rod (7) and the floating wheel (6), wherein the brake line (5) is wound around the floating wheel (6) at least once.

2. A brake mechanism with length compensation function according to claim 1, characterized in that: The floating wheel (6) is provided with a wire groove (61) for winding the brake wire (5) and for limiting and guiding the brake wire (5).

3. The brake mechanism with length compensation function according to claim 1, characterized in that: The connecting member (8) is an elastic rope or elastic wire or a rubber ring with elastic force.

4. A brake mechanism with length compensation function according to claim 3, characterized in that: The floating wheel (6) is provided with a connecting hole (62) for connecting the connecting member (8).

5. The brake mechanism with length compensation function according to claim 1, characterized in that: The brake line (5) comprises a jacket and a metal wire in the jacket; it also comprises a fixing frame (9) mounted on the vehicle frame (1), a connecting sleeve (91) mounted on the fixing frame (9) for connecting the jacket and for the metal wire to pass through, a fixing member (92) arranged on the brake pad (4) for connecting the metal wire, and a spring (93) mounted between the brake pad (4) and the fixing frame (9).

6. A brake mechanism with length compensation function according to claim 5, characterized in that: It also includes a plurality of protrusions (41) arranged on the brake pad (4) for enhancing friction resistance and improving braking stability.

7. The brake mechanism with length compensation function according to claim 1, characterized in that: The frame (1) is hollow, the floating wheel (6), the fixing rod (7) and the connecting member (8) are all located in the frame (1), the brake line (5) is located in the frame (1), and at least one end of the brake line (5) passes through the frame (1) and is connected to the brake pad (4).

8. The brake mechanism with length compensation function according to claim 7, characterized in that: It also includes a hollow groove (10) arranged on the frame (1) for one end of the brake line (5) to pass through the frame (1) and connect with the brake pad (4).

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