A portable visual aid vehicle for the blind

Abstract

This utility model relates to the field of traffic control system technology for pedestrian guidance indicators, and discloses a portable visual assistance vehicle for the blind, including a vehicle body. A fixing rod is fixedly connected to the top rear side of the vehicle body. An adjusting rod is slidably connected inside the fixing rod. A handle is fixedly connected to the top of the adjusting rod. A connecting sleeve is detachably connected to the outside of the fixing rod. The connecting sleeve has an installation groove inside and a rubber sleeve is fixedly connected inside. Two locking plates are threaded to the outside of the connecting sleeve. A sealing component is provided inside the connecting sleeve. In this utility model, by adjusting the height of the handle, the user can find the most comfortable and convenient grip position for operating the vehicle, which can effectively absorb and buffer the impact force generated when the vehicle stops, greatly reducing the possibility of impact damage to the vehicle body.

Description

Technical Field

[0001] This utility model relates to the field of traffic control system technology for pedestrian guidance indicators, and in particular to a portable visual assistance vehicle for the blind. Background Technology

[0002] Blind people, as a special group in today's society, require the joint help and care of all sectors of society. China has the largest number of blind people in the world, with tens of millions, accounting for 18% of the world's total blind population, and this number is increasing by 450,000 annually. Due to their visual impairment, this group faces significant difficulties in movement, especially when crossing the street alone. For example, they may not understand the current traffic lights or stray from the right path when crossing a zebra crossing. Every year, a considerable number of blind people are killed or injured while crossing the street; therefore, blind people use assistive devices when traveling.

[0003] The visual assistance vehicle for the blind mainly consists of a main body, a mobility device (such as wheels), sensors (including visual sensors and infrared range sensors), a voice prompt module, a gripping component, and a power supply device (such as a battery or solar power generation device). Its working principle involves using visual sensors to identify objects and road signs (such as tactile paving and traffic lights) in the surrounding environment, and infrared range sensors to detect the distance to obstacles. After processing this information, the voice prompt module provides blind users with relevant information such as direction of travel, road conditions, and the distance and location of obstacles, helping them walk or move safely.

[0004] In the prior art, some visual assistive vehicles for the blind are relatively large in size to ensure stability during use and make them safer for users. However, this makes it inconvenient for users to carry and ride, causing inconvenience to their travel. Therefore, a portable visual assistive vehicle for the blind is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a portable visual aid vehicle for the blind, aiming to improve the existing technology where the vehicle has a large area for stability during use, making it convenient for users to use with peace of mind. However, this makes it inconvenient for users to carry and ride, causing inconvenience to their travel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A portable visual aid vehicle for the blind includes a vehicle body. A fixed rod is fixedly connected to the top rear side of the vehicle body. An adjusting rod is slidably connected inside the fixed rod. A handle is fixedly connected to the top of the adjusting rod. A connecting sleeve is detachably connected to the outside of the fixed rod. An installation groove is opened inside the connecting sleeve. A rubber sleeve is fixedly connected inside the connecting sleeve. Two locking sleeve plates are threaded to the outside of the connecting sleeve. A sealing component is provided inside the connecting sleeve to increase the sealing performance at the connection between the adjusting rod and the locking sleeve plates. A protective component is provided at the bottom rear side of the vehicle body to reduce damage to the bottom of the vehicle body.

[0008] As a further description of the above technical solution:

[0009] The sealing assembly includes two rubber rings, the outer sides of which are slidably connected to the upper and lower sides of the inner wall of the mounting groove, and the inner sides of the rubber rings are slidably connected to an elastic retaining plate.

[0010] As a further description of the above technical solution:

[0011] The interior of one of the elastic plates is in contact with the exterior of the rubber sleeve, and the exterior of the elastic plate is in contact with the inner wall of the mounting groove;

[0012] As a further description of the above technical solution:

[0013] The adjusting rod is externally slidably connected to the inner wall of the mounting groove, and the adjusting rod is externally slidably connected to the inside of the rubber sleeve;

[0014] As a further description of the above technical solution:

[0015] The protective assembly includes a damper, one side of which is fixedly connected to the rear bottom of the vehicle body, and the other side of which is fixedly connected to a base plate, with a spring sleeved on the outside of the base plate.

[0016] As a further description of the above technical solution:

[0017] One end of the spring is fixedly connected to the outside of the damper, and the other end of the spring is fixedly connected to the side of the base plate near the damper.

[0018] As a further description of the above technical solution:

[0019] An air cushion is fixedly connected to the side of the base plate near the damper, and the inside of the air cushion is in contact with the outside of the spring.

[0020] As a further description of the above technical solution:

[0021] Two wheels are rotatably connected to the bottom of the vehicle body, and the outside of the adjusting rod is slidably connected to the inside of the locking sleeve.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when the adjusting rod is inserted, the rubber sleeve undergoes elastic deformation to tightly wrap around the adjusting rod. The contact between the two generates significant friction, allowing the adjusting rod to temporarily stop at a suitable position during adjustment, facilitating fine-tuning by the user. The rubber ring and elastic retaining plate in the sealing assembly work together. When adjusting the height, rotating the upper locking plate removes the rubber ring from compressing the elastic retaining plate, creating a gap between the adjusting rod and the locking plate. This allows the adjusting rod to slide freely, effectively accommodating blind users of different heights. By adjusting the handle height, users can find the most comfortable and convenient grip position for controlling the vehicle, reducing arm and wrist fatigue during prolonged use and making it easier for blind users to move the vehicle forward.

[0024] 2. In this utility model, when the vehicle body tilts backward due to its own weight and the bottom plate contacts the ground and squeezes the damper, it can effectively reduce the vibration amplitude of the vehicle body and avoid damage to the vehicle body and internal components caused by the large impact force generated by the sudden stop. The air cushion ring, as the outer buffer structure, is in contact with the spring inside. It not only limits the excessive deformation of the spring, but also obtains support through the compression of the spring to better play the buffering role. It can effectively absorb and buffer the impact force generated at the moment the car stops, greatly reducing the possibility of the impact force damaging the vehicle body, protecting the vehicle body and various electronic components and other parts inside, and extending the service life of the car. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a portable visual aid vehicle for the blind proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the handle of a portable visual aid vehicle for the blind proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the rubber ring structure of a portable visual aid vehicle for the blind proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the structure of a portable visual aid vehicle for the blind proposed in this utility model.

[0029] Legend:

[0030] 1. Body; 2. Fixing rod; 3. Adjusting rod; 4. Handle; 5. Connecting sleeve; 6. Mounting groove; 7. Rubber sleeve; 8. Rubber ring; 9. Elastic clamping plate; 10. Locking plate; 11. Damper; 12. Base plate; 13. Spring; 14. Air cushion ring; 15. Wheel. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1 to 3 This utility model provides an embodiment of a portable visual assistance vehicle for the blind, comprising a body 1, which is the main frame of the entire assistance vehicle. A fixed rod 2 is fixedly connected to the top rear side of the body 1. An adjusting rod 3 is slidably connected inside the fixed rod 2. The fixed rod 2 is an important bridge connecting the body 1 and the adjusting rod 3. A handle 4 is fixedly connected to the top of the adjusting rod 3. The adjusting rod 3 is directly related to the comfort and ease of operation of the user holding the handle 4. The handle 4 is the part that the blind user directly contacts and operates the vehicle.

[0033] A connecting sleeve 5 is detachably connected to the outside of the fixed rod 2. The connecting sleeve 5 connects the fixed rod 2 and the adjusting rod 3, and provides guidance and auxiliary fixation for the sliding of the adjusting rod 3. The connecting sleeve 5 has a mounting groove 6 inside, and the outside of the adjusting rod 3 is slidably connected to the inner wall of the mounting groove 6. The mounting groove 6 can ensure that the adjusting rod 3 can slide freely up and down, while restricting its displacement in the horizontal direction.

[0034] A rubber sleeve 7 is fixedly connected inside the connecting sleeve 5. The external part of the adjusting rod 3 is slidably connected inside the rubber sleeve 7. The inner diameter of the rubber sleeve 7 is slightly smaller than the outer diameter of the adjusting rod 3. When the adjusting rod 3 is inserted into it, the rubber sleeve 7 will produce a moderate elastic deformation, tightly wrapping the adjusting rod 3, thereby generating a large friction force.

[0035] The connecting sleeve 5 has two locking sleeve plates 10 connected to its external thread. A sealing assembly is installed inside the connecting sleeve 5 to increase the sealing performance at the connection between the adjusting rod 3 and the locking sleeve plates 10. The sealing assembly includes two rubber rings 8, which enhance the sealing performance at the connection between the adjusting rod 3 and the locking sleeve plates 10. The two rubber rings 8 are slidably connected to the upper and lower sides of the inner wall of the mounting groove 6, respectively. An elastic retaining plate 9 is slidably connected inside the rubber rings 8, playing a crucial auxiliary sealing role in the sealing assembly.

[0036] One of the elastic clamping plates 9 has its interior in contact with the exterior of the rubber sleeve 7, and its exterior is in contact with the inner wall of the mounting groove 6. The exterior of the adjusting rod 3 is slidably connected to the interior of the locking sleeve 10. When the height of the adjusting rod 3 needs to be adjusted, the upper locking sleeve 10 is rotated first to loosen the clamping force on the adjusting rod 3. At this time, the rubber ring 8 is no longer pressed against the elastic clamping plate 9, and the adjusting rod 3 can slide freely.

[0037] Reference Figure 4 A protective component is provided on the rear bottom side of the vehicle body 1. The protective component can reduce damage to the bottom of the vehicle body 1. The protective component includes a damper 11. One side of the damper 11 is fixedly connected to the rear bottom side of the vehicle body 1. When the vehicle body 1 tilts backward due to its own weight, the bottom plate 12 contacts the ground and squeezes the damper 11. The damping fluid flows through the internal throttle valve or small hole, generating resistance, thereby effectively reducing the vibration amplitude of the vehicle body 1 and avoiding damage to the vehicle body 1 and internal components caused by a large impact force due to sudden stopping.

[0038] A base plate 12 is fixedly connected to the other side of the damper 11. The base plate 12 is in direct contact with the ground and bears the impact force when the car stops. A spring 13 is sleeved on the outside of the base plate 12. The spring 13 plays the role of auxiliary shock absorption and buffering. It absorbs the impact force by its own elastic deformation. One end of the spring 13 is fixedly connected to the outside of the damper 11, and the other end of the spring 13 is fixedly connected to the side of the base plate 12 near the damper 11. When the base plate 12 is squeezed upward by the impact force of the ground, the spring 13 will be compressed accordingly to store elastic potential energy. After the impact force weakens, the stored energy is released to help the car body 1 return to a stable state.

[0039] An air cushion 14 is fixedly connected to the side of the base plate 12 near the damper 11. The air cushion 14 serves as the outer buffer structure of the protective component, providing additional protection for the vehicle body 1. The inside of the air cushion 14 contacts the outside of the spring 13. This design can limit the excessive deformation of the spring 13 to a certain extent, and also use the compression of the spring 13 to provide support for the air cushion 14, allowing it to better perform its buffering function. The combined effect of multiple protective mechanisms greatly improves the impact resistance of the bottom of the vehicle, ensuring the safety and stability of the vehicle during frequent start-stop processes. Two wheels 15 are rotatably connected to the bottom of the vehicle body 1, which can assist the movement of the vehicle.

[0040] Working principle: First, place the vehicle body 1 in a suitable position. The user can operate the vehicle body 1 by holding the handle 4. The vehicle body 1 can detect obstacles in front and help the user avoid them. When adjusting the height of the handle 4, rotate the upper locking sleeve 10. At this time, the rubber ring 8 is no longer pressed against the elastic plate 9. A gap is created between the internal adjusting rod 3 and the locking sleeve 10. Then, pull the adjusting rod 3 upward. The adjusting rod 3 slides inside the rubber sleeve 7. The contact between the adjusting rod 3 and the rubber sleeve 7 can increase the friction, thereby preventing the adjusting rod 3 from slipping. After adjusting to a suitable position, tighten the locking sleeve 10 again, which can compress the rubber ring 8 again, so that the elastic plate 9 is compressed and fills the gap between the adjusting rod 3 and the locking sleeve 10, which can fix the adjusting rod 3 again.

[0041] When the user needs to stop, simply release the handle 4. At this time, the weight of the vehicle body 1 will cause the vehicle body 1 to tilt backward. At this time, the bottom plate 12 contacts the ground and squeezes the damper 11. At the same time, the spring 13 will also be compressed. The damper 11 and the spring 13 work together to absorb the vibration. At the same time, the air cushion 14 will also absorb the external force and protect the vehicle body 1.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable visual aid trolley for the blind comprising a body (1) characterised in that: A fixing rod (2) is fixedly connected to the top rear side of the vehicle body (1). An adjusting rod (3) is slidably connected inside the fixing rod (2). A handle (4) is fixedly connected to the top of the adjusting rod (3). A connecting sleeve (5) is detachably connected to the outside of the fixing rod (2). An installation groove (6) is opened inside the connecting sleeve (5). A rubber sleeve (7) is fixedly connected inside the connecting sleeve (5). Two locking sleeves (10) are threadedly connected to the outside of the connecting sleeve (5). A sealing component is provided inside the connecting sleeve (5). The sealing component can increase the sealing performance at the connection between the adjusting rod (3) and the locking sleeve (10). A protective component is provided at the bottom rear side of the vehicle body (1). The protective component can reduce damage to the bottom of the vehicle body (1).

2. The portable visual aid trolley for the blind as claimed in claim 1 wherein: The sealing assembly includes two rubber rings (8), the outer sides of which are slidably connected to the upper and lower sides of the inner wall of the mounting groove (6), and the inner sides of the rubber rings (8) are slidably connected to an elastic retaining plate (9).

3. The portable visual aid trolley for the blind as claimed in claim 2 wherein: The interior of one of the elastic plates (9) is in contact with the exterior of the rubber sleeve (7), and the exterior of the elastic plate (9) is in contact with the inner wall of the mounting groove (6).

4. The portable visual aid trolley for the blind as claimed in claim 1 wherein: The external part of the adjusting rod (3) is slidably connected to the inner wall of the mounting groove (6), and the external part of the adjusting rod (3) is slidably connected to the inside of the rubber sleeve (7).

5. The portable visual aid trolley for the blind as claimed in claim 1 wherein: The protective assembly includes a damper (11), one side of which is fixedly connected to the rear bottom of the vehicle body (1), and the other side of which is fixedly connected to a base plate (12), and a spring (13) is sleeved on the outside of the base plate (12).

6. The portable visual aid trolley for the blind as claimed in claim 5 wherein: One end of the spring (13) is fixedly connected to the outside of the damper (11), and the other end of the spring (13) is fixedly connected to the side of the base plate (12) near the damper (11).

7. The portable visual aid trolley for the blind as claimed in claim 5 wherein: An air cushion (14) is fixedly connected to the side of the base plate (12) near the damper (11), and the inside of the air cushion (14) is in contact with the outside of the spring (13).

8. The portable visual aid trolley for the blind as claimed in claim 1 wherein: The bottom of the vehicle body (1) is rotatably connected to two wheels (15), and the outside of the adjusting rod (3) is slidably connected to the inside of the locking sleeve (10).

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