Wheelchair manipulator and armrest fixing structure

Abstract

The utility model relates to a wheelchair manipulator and armrest fixing structure which comprises a manipulator and an armrest, a positioning notch matched with the rear side of the manipulator is formed in the front end of the armrest, and a supporting part used for supporting the bottom of the manipulator and a wire harness channel used for allowing a wire harness of the manipulator to penetrate through are arranged in the positioning notch. A fixing groove is formed in the front side of the supporting part, a fixing piece is arranged in the fixing groove, and a fixing plate fixedly connected with the fixing piece is arranged at the bottom of the manipulator. The manipulator has the advantages that the wire harness is protected in a hidden mode, the wire harness is prevented from being exposed, and the fixing stability of the manipulator is improved.

Description

Technical Field

[0001] This utility model relates to a wheelchair maneuver and armrest fixing structure, belonging to the field of wheelchair technology. Background Technology

[0002] Currently, the controls of electric wheelchairs on the market are fixed to the frame and cannot be moved. Since users have different heights and body types, they cannot adjust the position of the controls according to their own height and weight, making it very awkward to use and resulting in low comfort.

[0003] Chinese patent application CN208598674U discloses a wheelchair manipulator fixing structure. The manipulator is fixed to the front end of the armrest tube by a clamping member. The front end of the armrest tube extends downward to form a fixing tube. The clamping member includes a left clamping member and a right clamping member. The left clamping member is located to the left of the right clamping member. The front ends of the left clamping member and the front ends of the right clamping member are both formed with through grooves that extend vertically. A bolt is fitted in the through groove. The bolt passes through the through groove and is threadedly fixed to the manipulator.

[0004] Existing controllers typically have power or signal cables, which are exposed and easily pulled or damaged by external objects during daily use, affecting their normal operation and potentially causing damage. Utility Model Content

[0005] The purpose of this utility model is to provide a wheelchair manipulator and armrest fixing structure, which solves the problems of easy damage to the manipulator wiring harness in the prior art.

[0006] The above-mentioned technical objective of this utility model is mainly achieved through the following technical solution: a wheelchair manipulator and armrest fixing structure, including a manipulator and an armrest. The front end of the armrest is provided with a positioning notch that mates with the rear side of the manipulator. The positioning notch contains a support part for supporting the bottom of the manipulator and a wire harness channel for the manipulator's wiring harness to pass through. A fixing groove is formed on the front side of the support part, and a fixing member is provided in the fixing groove. The bottom of the manipulator is provided with a fixing plate that is connected and fixed to the fixing member. The rear side of the manipulator mates with the positioning notch at the front end of the armrest to position the manipulator and keep it stable. The support part supports the manipulator, and the manipulator is fixed at the positioning notch by the connection of the fixing member and the fixing plate. The wiring harness on the manipulator can be hidden in the wiring harness channel and passes through the wiring harness channel to connect to the controller and battery box on the wheelchair. At the same time, the manipulator mates with the positioning notch to form a tight fit with the front end of the armrest, thereby hiding and protecting the wiring harness, preventing the wiring harness from being exposed, and increasing the fixing stability of the manipulator.

[0007] Preferably, the upper part of the fixing member extends from the fixing groove to the top of the support part, and the top of the fixing member is provided with a limiting groove arranged along the length direction. The bottom of the fixing plate is provided with a fixing block that cooperates with the inner wall of the limiting groove. The upper part of the fixing member extending from the fixing groove to the top of the support part can increase the support for the fixing member and make the fixing member more stable. The combination of the limiting groove and the fixing block facilitates the assembly of the manipulator. The manipulator can be fixed by the fixing block in the limiting groove, making the assembly simpler.

[0008] Preferably, the lower part of the fixing member has a fixing cavity corresponding to the lower part of the limiting groove. A locking rod is inserted into the fixing cavity. The upper end of the locking rod passes through the limiting groove and the fixing block to connect with the locking nut. The lower end of the locking rod passes through the bottom of the fixing cavity and extends to the lower part of the fixing member. The locking rod and the locking nut are provided so that the fixing member and the fixing block can be connected by the locking rod and tightened by the locking nut to fix them, thereby fixing the manipulator.

[0009] Preferably, the fixed cavity is provided with a telescopic spring sleeved around the locking rod, and the bottom end of the telescopic spring is connected to an annular protrusion located in the fixed cavity and on the side wall of the locking rod; the above-mentioned telescopic spring is provided so that when the locking rod is unlocked, the locking rod can be loosened by the cooperation of the annular protrusion, which facilitates the quick disassembly of the locking rod.

[0010] Preferably, the lower end of the locking rod is fitted with a limiting block located below the fixing member, and the lower end of the locking rod passes through the limiting block and is rotatably connected to the wrench; the connection between the limiting block and the wrench, together with the locking rod and the telescopic spring, realizes the locking of the fixing block and the operator, and can be quickly disassembled and assembled by the wrench, making the disassembly and assembly of the operator simpler and more efficient.

[0011] Preferably, the wrench includes a disc rotatably connected to the lower end of the locking rod and whose axis is perpendicular to the axis of the locking rod. The disc has a gripping part on its side wall, and the bottom of the limiting block has an arc-shaped groove that mates with the side wall of the disc. The lower end of the locking rod is eccentrically positioned relative to the axis of the disc. The disc and gripping part of the wrench allow the locking rod to press against the limiting block through the eccentric positioning of the handle and the locking rod, thereby pulling the locking rod downward to tighten the fixing block and the fixing component, thus locking the actuator. The actuator can be quickly unlocked by rotating the wrench, achieving a quick-release function.

[0012] Therefore, this utility model has the characteristics of concealing and protecting the wire harness, preventing the wire harness from being exposed, and increasing the stability of the manipulator. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 A schematic diagram of the handrail structure.

[0015] Figure 3 yes Figure 1 A schematic diagram of the fixed structure of the manipulator in the diagram.

[0016] Figure 4 yes Figure 3 A structural diagram from another perspective. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0018] like Figure 1-3 As shown, a wheelchair manipulator and armrest fixing structure includes a manipulator 1 and an armrest 2. The front end of the armrest 2 is provided with a positioning notch 21 that cooperates with the rear side of the manipulator 1. The positioning notch 21 is provided with a support part 211 for supporting the bottom of the manipulator 1 and a wire harness channel 212 for the wire harness of the manipulator 1 to pass through. A fixing groove 213 is formed on the front side of the support part 211. A fixing member 22 is provided in the fixing groove 213. The bottom of the manipulator 1 is provided with a fixing plate 11 that is connected and fixed to the fixing member 22.

[0019] The aforementioned controller is a product already available on the market and is existing technology, so it will not be described in detail here. The rear of the controller usually has a power connection cable and a signal connection cable, which need to be connected to the wheelchair's battery box or controller. The rear of the controller mates with the positioning notch and is locked and fixed to the positioning notch at the front of the armrest by a fixing plate and a fixing component. The wiring harness passes through the wiring harness channel and the internal channel of the armrest and is pulled to the wheelchair's battery box or controller for connection, so that the controller and the armrest are fixed as one unit, which is convenient to install, stable, and keeps the wiring harness hidden. The fixing component is fixed in the fixing groove on the front side of the support part of the positioning notch, and the controller is connected and fixed to the fixing component and the front of the armrest by the fixing plate at the bottom.

[0020] like Figure 3As shown, the upper part of the fixing member 22 extends from the fixing groove 213 to above the support part 211. The top of the fixing member 22 is provided with a limiting groove 221 arranged along the length direction. The bottom of the fixing plate 11 is provided with a fixing block 111 that cooperates with the inner wall of the limiting groove 221. The lower part of the fixing member 22 is provided with a fixing cavity 222 corresponding to the lower part of the limiting groove 221. A locking rod 23 is inserted into the fixing cavity 222. The upper end of the locking rod 23 passes through the limiting groove 221 and the fixing block 111 to connect with the locking nut 231. The lower end of the locking rod 23 passes through the fixing nut 231. The bottom of the fixed cavity 222 extends to the bottom of the fixing member 22; the upper part of the fixing member has an elongated structure, extending from the fixing groove to the top of the support part. The bottom of the fixing plate is provided with a fixing block that fits in the limiting groove. The fixing member thus keeps the operator fixed by locking the fixing block in the limiting groove. The locking rod passes through the fixed cavity, the upper part of the fixing member, the fixing groove and the fixing block in sequence. The fixing block has an opening in the middle with two through holes, and the limiting groove is open at both ends, so that the locking nut can be tightened to the upper end of the locking rod in the opening of the fixing block.

[0021] like Figure 3-4 As shown, a telescopic spring 24 is provided in the fixed cavity 222 and sleeved around the locking rod 23. The bottom end of the telescopic spring 24 is connected to an annular protrusion 232 located in the fixed cavity 222 and on the side wall of the locking rod 23. A limiting block 233 located below the fixing member 22 is sleeved on the lower end of the locking rod 23. The lower end of the locking rod 23 passes through the limiting block 233 and is rotatably connected to the wrench 25. The wrench 25 includes a disc 251 rotatably connected to the lower end of the locking rod 23 and whose axis is perpendicular to the axis of the locking rod 23. A gripping part 252 is provided on the side wall of the disc 251. An arc groove 234 that mates with the side wall of the disc 251 is provided at the bottom of the limiting block 233. The lower end of the locking rod 23 is eccentrically positioned with respect to the axis of the disc 251.

[0022] When locking the actuator, the wrench needs to be turned. The side of the wrench's disc with a larger eccentricity rotates until it contacts the arc-shaped groove at the bottom of the limit block, compressing the arc-shaped groove and causing the limit block to fit tightly against the bottom of the fixing component. The locking rod is pulled downwards, the telescopic spring contracts, and the upper end of the locking rod is limited by the locking nut, tightening the fixing block and the fixing component until the wrench is fully rotated to its position, thus locking the actuator. To unlock, the wrench is turned in the opposite direction. The side of the wrench's disc with a smaller eccentricity rotates to the arc-shaped groove near the bottom of the limit block. At this time, a gap is formed between the arc-shaped groove and the side wall of the disc. The telescopic spring releases the tension of the locking rod and the locking nut at the upper end of the locking rod on the fixing block and the fixing component, thus unlocking the actuator.

Claims

1. A wheelchair manipulator and armrest fixation structure, characterized by: The utility model provides an operating handle and handrail, the front end of the handrail is provided with a positioning gap matched with the rear side of the operating handle, the inside of the positioning gap is provided with a supporting part for supporting the bottom of the operating handle and a wire harness channel for the wire harness of the operating handle to pass through, the front side of the supporting part is formed with a fixing groove, the fixing groove is provided with a fixing part, and the bottom of the operating handle is provided with a fixing plate connected and fixed with the fixing part.

2. The wheelchair manipulator and armrest fixation structure according to claim 1, characterized in that: The upper part of the fixing part extends from the fixing groove to above the supporting part, the top of the fixing part is provided with a limiting groove arranged along the length direction, and the bottom of the fixing plate is provided with a fixing block matched with the inner wall of the limiting groove.

3. The wheelchair manipulator and armrest fixation structure according to claim 2, characterized in that: The lower part of the fixing part is provided with a fixing cavity below the limiting groove, a lock rod is arranged in the fixing cavity, the upper end of the lock rod passes through the limiting groove and the fixing block and is connected with a locking nut, and the lower end of the lock rod extends to below the fixing part through the bottom of the fixing cavity.

4. The wheelchair manipulator and armrest fixation structure according to claim 3, characterized in that: The fixing cavity is provided with a telescopic spring sleeved on the side of the lock rod, and the bottom end of the telescopic spring is connected with an annular convex part arranged on the side wall of the lock rod and located in the fixing cavity.

5. The wheelchair manipulator and armrest fixation structure according to claim 3, characterized in that: The lower end of the lock rod is sleeved with a limiting block located below the fixing part, and the lower end of the lock rod is rotationally connected with a wrench through the limiting block.

6. The wheelchair manipulator and armrest fixation structure according to claim 5, characterized in that: The wrench comprises a disc rotationally connected with the lower end of the lock rod and arranged with an axis perpendicular to the axis of the lock rod, the side wall of the disc is provided with a holding part, the bottom of the limiting block is provided with an arc-shaped groove matched with the side wall of the disc, and the lower end of the lock rod is eccentrically arranged with the axis of the disc.

Images