Novel handheld range finder suitable for field environment with strong light
By introducing a sliding baffle and buffer components into the handheld rangefinder, the problem of screen glare under strong outdoor light is solved, resulting in higher measurement accuracy and instrument stability, and reducing the risk of damage from drops.
Patent Information
- Application Number
- CN202520049887.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-09
AI Technical Summary
In bright outdoor environments, the displays of traditional handheld rangefinders are prone to glare, making the data difficult to read and affecting measurement accuracy and efficiency.
A handheld rangefinder was designed, equipped with a sliding baffle and a buffer assembly. The baffle can block external light, and the buffer assembly reduces damage from drops through counterweights and hydraulic hoses, thereby improving measurement accuracy and instrument stability.
It effectively blocks light interference, improves measurement accuracy and work efficiency, reduces the risk of damage from falling instruments, and ensures reliability and stability in complex environments.
Smart Images
Figure CN223796685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of infrared rangefinder technology, and in particular to a novel handheld rangefinder suitable for use in environments with strong outdoor light. Background Technology
[0002] A rangefinder is an instrument used to measure distance. It works by emitting and receiving signals, then calculating the distance between the target object and the rangefinder based on the signal's propagation characteristics. These signals can be various types of physical signals, such as lasers, ultrasound, and infrared radiation. However, in bright outdoor environments, traditional handheld rangefinders face numerous challenges. With the increasing sophistication and development of field operations, the performance and reliability requirements for rangefinders are constantly rising. In the field, light intensity is high and highly variable, placing higher demands on the accuracy, visibility, and ease of operation of rangefinders. Traditional handheld rangefinders are prone to problems such as difficulty in reading and decreased measurement accuracy under strong light. For example, in direct sunlight, the instrument's display screen may reflect light, making the data difficult to read and affecting the measurement results. Moreover, the refraction and scattering of light can also interfere with the measurement signal, affecting measurement accuracy.
[0003] In existing technologies, traditional handheld rangefinders are used by first aiming at the target object using the aiming device on the instrument. After aiming at the target, the measurement button is pressed, and the instrument will emit a measurement signal. After the signal reaches the target, it is reflected back and received by the instrument. After receiving the reflected signal, the instrument will calculate the distance between the target object and the instrument based on the characteristics of the signal propagation time, and display the result on the display screen.
[0004] However, in existing technologies, due to the bright light in outdoor environments, especially under direct sunlight, the display screen of handheld rangefinders is prone to glare. This is because the surface material and optical properties of the display screen cause light to reflect off its surface, much like a mirror reflects light. This glare makes it difficult to clearly see the displayed measurement data, icons, and operation prompts, resulting in low ranging efficiency. Therefore, a new type of handheld rangefinder suitable for bright outdoor environments is proposed to solve these problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a new handheld rangefinder suitable for strong outdoor lighting environments, aiming to improve the problem in the prior art where it is difficult to see the reading in strong light, which affects the rangefinding efficiency.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A novel handheld rangefinder suitable for use in bright outdoor environments includes a rangefinder with a baffle slidably connected inside. A wedge is fixedly connected to the bottom of the baffle, and two sliding rods are fixedly connected to the bottom of the baffle. A spring is fixedly connected to the bottom of each sliding rod. Two sliding rods are slidably connected inside the rangefinder, and a retaining ring is fixedly connected to the outside of each sliding rod. A spring is sleeved on the outside of each sliding rod. An inclined block is fixedly connected to the adjacent side of each of the two sliding rods, and a pressing plate is fixedly connected to the distant side of each of the two sliding rods. A buffer assembly is provided inside the rangefinder to prevent it from falling.
[0008] As a further description of the above technical solution:
[0009] The tops of the two inclined blocks are in contact with the bottom of the wedge, and the exteriors of the two inclined blocks are slidably connected to the interior of the rangefinder.
[0010] As a further description of the above technical solution:
[0011] One end of the second spring is fixedly connected to the outside of the fixed ring, and the other end of the second spring is fixedly connected to the inside of the rangefinder.
[0012] As a further description of the above technical solution:
[0013] The rangefinder has multiple buttons and a screen on its top, and an infrared emitting light is fixedly connected to the front of the rangefinder.
[0014] As a further description of the above technical solution:
[0015] The buffer assembly includes a counterweight block, which is externally slidably connected to the inside of the rangefinder. Two sliding rods are externally slidably connected to the counterweight block, and a piston plate is externally fixedly connected to the sliding rods.
[0016] As a further description of the above technical solution:
[0017] The rangefinder has two hydraulic oil pipes fixedly connected inside, and the piston plate is slidably connected to the inside of the hydraulic oil pipes.
[0018] As a further description of the above technical solution:
[0019] A spring is fitted around the outside of the sliding rod three. One end of the spring three is fixedly connected to the outside of the rangefinder, and the other end of the spring three is fixedly connected to the outside of the counterweight.
[0020] As a further description of the above technical solution:
[0021] The sliding rod three is externally slidably connected to the inside of the hydraulic oil pipe, and two piston holes are opened inside the piston plate.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, pressing the two pressing plates causes the sliding rod two to slide, thereby pushing the two inclined blocks to slide to the same side, generating an upward thrust with the contacting wedge block, thereby causing the baffle to slide upward and rise, blocking the external light, making it easier for monitoring personnel to view and record, avoiding misreading caused by light interference, and improving the accuracy of measurement and work efficiency.
[0024] 2. In this utility model, the direction of the fall is controlled by the counterweight. Upon contact with the ground, the two sliding rods slide inside the rangefinder, compressing the spring. The spring provides a buffering force for the rangefinder. At the same time, the sliding of the sliding rods causes the piston plate to slide inside the hydraulic oil pipe. The hydraulic oil inside generates pressure through the piston hole, thereby achieving a damping effect. This further improves the buffering effect, reduces the damage caused by the fall of the rangefinder, and lowers the risk of damage caused by accidental falls, providing strong protection for field operations. Attached Figure Description
[0025] Figure 1 A three-dimensional view of a novel handheld rangefinder suitable for use in bright outdoor environments, as proposed in this utility model.
[0026] Figure 2 A schematic diagram of the baffle structure of a novel handheld rangefinder suitable for use in bright outdoor environments, as proposed in this utility model.
[0027] Figure 3 This utility model presents a schematic diagram of a piston plate structure for a novel handheld rangefinder suitable for use in bright outdoor environments.
[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0029] Legend:
[0030] 1. Rangefinder; 2. Button; 3. Screen; 4. Baffle; 5. Infrared emitter; 6. Sliding rod one; 7. Spring one; 8. Wedge; 9. Sliding rod two; 10. Inclined block; 11. Spring two; 12. Press plate; 13. Fixing ring; 14. Counterweight; 15. Sliding rod three; 16. Spring three; 17. Piston plate; 18. Piston hole; 19. Hydraulic oil pipe. 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 2 This utility model provides one embodiment: a novel handheld rangefinder suitable for use in bright outdoor environments, comprising a rangefinder 1. The outer shell of the rangefinder 1 is made of high-strength engineering plastic, which is not only sturdy and durable but also has a certain degree of UV resistance, effectively resisting the corrosion of harsh outdoor environments. A baffle 4 is slidably connected inside the rangefinder 1. The baffle 4 is a U-shaped thin plate adapted to the internal width of the rangefinder 1. When the outdoor light is strong, the baffle 4 can slide to block the external light. A wedge 8 is fixedly connected to the bottom of the baffle 4. The bottom of the wedge 8 has an inclined edge, which can be contacted to cause it to slide. Two sliding rods 6 are fixedly connected to the bottom of the baffle 4. The sliding rods 6 are cylindrical and are used to drive the baffle 4 to slide and provide a limit. A spring 7 is fixedly connected to the bottom of the sliding rods 6. The spring 7 is used to provide a reaction force to drive the sliding rods 6 to slide in the opposite direction. Two sliding rods 9 are slidably connected inside the rangefinder 1. The sliding rods 9 are also cylindrical. By sliding, they drive the subsequent structure to contact the wedge 8 and push the wedge 8 to slide. The sliding rods 9 are fixedly connected to the outside of the sliding rods 1. The fixed ring 13 is ring-shaped and slides through the sliding rod 9, receiving the reaction force from the subsequent structure. The sliding rod 9 is fitted with a spring 11, which provides the reaction force. The two sliding rods 9 are fixedly connected to the adjacent sides with inclined blocks 10. The inclined blocks 10 are right-angled triangular blocks with their hypotenuses in contact with the hypotenuses of the wedge block 8. The wedge block 8 slides vertically through horizontal sliding. The two sliding rods 9 are fixedly connected to the distant sides with push plates 12, which are convenient for operators to press with their fingers to adjust the state of the baffle 4 at any time and to view it in real time. The rangefinder 1 is equipped with a buffer component to prevent it from falling.
[0033] Reference Figure 2 The tops of the two inclined blocks 10 are in contact with the bottom of the wedge block 8. The contact between the inclined edge of the wedge block 8 and the inclined block 10 changes the sliding force, thereby pushing the wedge block 8 to slide vertically. The exterior of the two inclined blocks 10 is slidably connected to the interior of the rangefinder 1, providing force for the sliding of the wedge block 8. One end of the second spring 11 is fixedly connected to the exterior of the fixed ring 13, and the other end of the second spring 11 is fixedly connected to the interior of the rangefinder 1, thereby driving the sliding rod 9 to slide and reset through the reaction force, which is convenient for the next use.
[0034] Reference Figure 1 The rangefinder 1 has multiple buttons 2 mounted on its top. These buttons are made of hard, tactile plastic and are rectangular in shape for easy operation. Each button 2 is clearly labeled, corresponding to a different function. A screen 3, a large rectangular LCD display, is also mounted on the top of the rangefinder 1, clearly displaying measurement data, operation prompts, and various icon information. An infrared emitting lamp 5 is fixedly connected to the front of the rangefinder 1. When the infrared emitting lamp 5 is turned on, it emits infrared rays to measure the distance to the target object.
[0035] Reference Figures 3 to 4 The buffer assembly includes a counterweight 14, which is externally slidably connected to the inside of the rangefinder 1. The counterweight 14 is rectangular in shape and is made of high-density cast iron to enhance its stability, allowing it to stably control its falling direction by its own weight when the instrument is dropped. Two cylindrical sliding rods 15 are externally slidably connected to the counterweight 14, which slide to allow the counterweight 14 to receive the buffering force of the elastic structure. A circular piston plate 17 is fixedly connected to the outside of the sliding rods 15. Two hydraulic oil pipes 19 are fixedly connected inside the rangefinder 1, and the piston plate 17 is externally slidably connected to the inside of the hydraulic oil pipes 19. The hydraulic oil pipe 19 is filled with hydraulic oil, providing a medium for the sliding of the piston plate 17. A spring 16 is sleeved on the outside of the sliding rod 15. One end of the spring 16 is fixedly connected to the outside of the rangefinder 1, and the other end is fixedly connected to the outside of the counterweight 14, thus providing a buffering effect for the sliding of the counterweight 14. The outside of the sliding rod 15 is slidably connected to the inside of the hydraulic oil pipe 19. Two piston holes 18 are opened inside the piston plate 17. When the piston plate 17 slides in the hydraulic oil pipe 19, the hydraulic oil generates pressure through the piston holes 18, thereby achieving a damping effect, further reducing vibration, reducing damage to the rangefinder 1, and extending its service life.
[0036] Working principle: First, when the staff takes the rangefinder 1 to the field for distance measurement, they press button 2 to activate the infrared emitting lamp 5 to emit infrared rays for distance measurement. When the outdoor light is strong, the data displayed on button 2 is difficult to see. At this time, pressing the two push plates 12 causes the sliding rod 9 to slide, which in turn pushes the two inclined blocks 10 to slide to the same side. This creates an upward thrust with the contacting wedge block 8, causing the baffle 4 to slide upward and block the external light, making it easier for the monitoring personnel to see and record. At the same time, the sliding rod 6 slides and stretches the spring 7. Meanwhile, the sliding of the sliding rod 9 causes the spring 11 to slide and compress, generating a reaction force. The reaction force of the spring 7 and the spring 11 causes the baffle 4 and the inclined block 10 to slide back to their original position, making it easy to store and use next time. This allows the monitoring personnel to clearly see and record, avoiding misreading caused by light interference, and improving the accuracy and efficiency of the measurement.
[0037] Secondly, when used outdoors, the complex environment often leads to the rangefinder 1 falling. When the rangefinder 1 falls, the counterweight 14, being relatively heavy, controls the direction of the fall. Upon contact with the ground, it causes the two sliding rods 15 to slide inside the rangefinder 1, compressing the spring 16. The spring 16 provides cushioning force to the rangefinder 1. Simultaneously, the sliding of the sliding rods 15 causes the piston plate 17 to slide inside the hydraulic oil pipe 19. The hydraulic oil inside generates pressure through the piston hole 18, achieving a damping effect. This further enhances the cushioning effect, reducing damage from falls and ensuring the reliability and stability of the instrument in complex environments. This allows the instrument to better protect itself in the field, reducing the risk of damage from accidental drops and providing strong support for field operations.
[0038] 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 new type of hand-held range finder suitable for use in strong light environments in the field, comprising a range finder (1), characterized in that: The inside of the range finder (1) is slidably connected with a baffle (4), the bottom of the baffle (4) is fixedly connected with a wedge block (8), the bottom of the baffle (4) is fixedly connected with two sliding rods one (6), the bottom of the sliding rod one (6) is fixedly connected with a spring one (7), the inside of the range finder (1) is slidably connected with two sliding rods two (9), the outside of the sliding rod two (9) is fixedly connected with a fixed ring (13), the outside of the sliding rod two (9) is sleeved with a spring two (11), the proximal side of the two sliding rod two (9) is fixedly connected with an inclined block (10), the distal side of the two sliding rod two (9) is fixedly connected with a pressing plate (12), the inside of the range finder (1) is provided with a buffer assembly for preventing the range finder (1) from falling.
2. A new type of hand-held range finder suitable for use in strong light environments in the field according to claim 1, characterized in that: The top of the two inclined blocks (10) is in contact with the bottom of the wedge block (8), and the outside of the two inclined blocks (10) is slidably connected in the inside of the range finder (1).
3. A new type of hand-held range finder suitable for use in strong light environments in the field according to claim 1, characterized in that: One end of the spring two (11) is fixedly connected to the outside of the fixed ring (13), and the other end of the spring two (11) is fixedly connected to the inside of the range finder (1).
4. The new type of hand-held range finder suitable for use in the field in a relatively strong light environment according to claim 1, characterized in that: The top of the range finder (1) is provided with a plurality of keys (2), the top of the range finder (1) is provided with a screen (3), and the front side of the range finder (1) is fixedly connected with an infrared emitter (5).
5. The new type of hand-held range finder suitable for use in the field in a relatively strong light environment according to claim 1, characterized in that: The buffer assembly comprises a counterweight (14), the outside of the counterweight (14) is slidably connected in the inside of the range finder (1), and the outside of the counterweight (14) is slidably connected with two sliding rods three (15), and the outside of the sliding rod three (15) is fixedly connected with a piston plate (17).
6. A new type of hand-held range finder suitable for use in strong light environments in the field according to claim 5, characterized in that: The inside of the range finder (1) is fixedly connected with two hydraulic oil pipes (19), and the outside of the piston plate (17) is slidably connected in the inside of the hydraulic oil pipe (19).
7. A new type of hand-held range finder suitable for use in strong light environments in the field according to claim 5, characterized in that: The outside of the sliding rod three (15) is sleeved with a spring three (16), one end of the spring three (16) is fixedly connected to the outside of the range finder (1), and the other end of the spring three (16) is fixedly connected to the outside of the counterweight (14).
8. A new type of hand-held range finder suitable for use in strong light environments in the field according to claim 6, characterized in that: The outside of the sliding rod three (15) is slidably connected in the inside of the hydraulic oil pipe (19), and the inside of the piston plate (17) is provided with two piston holes (18).