CN202471053U - Laser range finder capable of reducing hand errors - Google Patents

Abstract

The utility model discloses a laser range finder capable of reducing hand-held errors, which comprises a housing, a display screen is arranged on the upper front of the housing, keys are arranged on the lower front of the housing, and a laser emitting device is arranged on the top surface of the housing. There are L-shaped grooves along the elongation direction of the side grooves on both sides of the lower part of the shell. The two grooves are respectively located at the two ends of the two sides. There are sliding grooves, and the two grooves are respectively provided with The shape of the groove matches the L-shaped bracket, and the two sides of one end of the two brackets are respectively fixed with protrusions, and the four protrusions are respectively located in the corresponding sliding grooves. The contact area between the range finder and several surfaces is expanded by setting the expandable bracket, so as to ensure that the range finder is perpendicular to the base surface and reduce measurement errors.

Description

A Laser Rangefinder with Reduced Handheld Error

technical field

The utility model belongs to the technical field of engineering measuring devices and relates to a laser rangefinder capable of reducing hand-held errors.

Background technique

In the surveying and mapping in the early stage of the project, as well as during the construction process, distance measurement is required. At present, the measuring tool in most cases is a tape measure, which is time-consuming and laborious. In recent years, the use of laser range finders has made distance measurement simple and efficient. However, it is not easy to ensure that the distance between the range finder and the measurement base is perpendicular to the current handheld laser range finder, so that the measured data is more accurate than the actual distance. large, increasing the measurement error.

Contents of the invention

The purpose of the utility model is to provide a laser range finder which can reduce hand-held error, which solves the problem that it is difficult to ensure that the range finder is perpendicular to the base surface during measurement in the existing laser range finder, thereby increasing the measurement error.

The technical scheme adopted by the utility model is a laser range finder capable of reducing hand-held errors, including a housing, a display screen is arranged on the front upper part of the housing, buttons are arranged on the front lower part of the housing, and buttons are arranged on the top of the housing. There are laser emitting holes on the surface, and L-shaped grooves are opened along the elongation direction of the side grooves on both sides of the lower part of the shell. L-shaped brackets matching the shape of the grooves are respectively arranged at the lower part, protrusions are fixedly connected to both sides of one end of the two brackets, and the four protrusions are respectively located in the corresponding sliding grooves.

The utility model is also characterized in that,

When the protrusion is located at the lower end of the slide groove, and the support withdraws from the groove and rotates 90°, the end of the support without the protrusion is located at the same level as the bottom surface of the housing.

The beneficial effect of the utility model is that the contact area between the rangefinder and several surfaces is expanded by arranging expandable brackets, thereby ensuring that the rangefinder is perpendicular to the base surface and reducing measurement errors.

Description of drawings

Fig. 1 is the structure schematic diagram of a kind of laser distance finder that can reduce hand-held error of the present utility model;

Fig. 2 is the structural schematic diagram of support in the range finder of the present invention;

Fig. 3 is a cross-sectional view of the bracket part in the range finder of the present invention;

Fig. 4 is a cross-sectional view after the bracket is deployed in the range finder of the present invention;

Fig. 5 is a diagram of the use state of the range finder of the present invention.

In the figure, 1. shell, 2. display screen, 3. button, 4. laser emission hole, 5. groove, 6. sliding groove, 7. bracket, 8. bump.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model provides a laser rangefinder capable of reducing hand-held errors, as shown in Figure 1, comprising a housing 1, a display screen 2 is arranged on the front upper part of the housing 1, and a button 3 is arranged on the front lower part of the housing 1 , The top surface of the casing 1 is provided with a laser emission hole 4 . As shown in Fig. 2 and Fig. 3, L-shaped grooves 5 are formed on both sides of the lower part of the housing 1 along the elongation direction of the side flutes, and two grooves 5 are respectively located at both ends of the two side parts and have sliding grooves 6. , the recesses of the two grooves 5 are respectively provided with L-shaped brackets 7 that match the shape of the grooves 5, and the two sides of one end of the two brackets 6 are respectively fixed with bumps 8, and the four bumps 8 are respectively located on the corresponding Inside the sliding groove 6.

As shown in FIG. 4 , when the protrusion 8 is located at the lower end of the slide groove 6 and the support 7 withdraws from the groove 5 and rotates 90°, the end of the support 7 without the protrusion 8 is located at the same level as the bottom surface of the housing 1 .

When in use, first pull the bracket 7 downward so that the bump 8 is located at the lower end of the sliding groove 6, then turn the bracket 7 until the bracket 7 turns 90°, that is, the end of the bracket 7 without the bump 8 is located at the same position as the bottom surface of the housing 1. Horizontal plane, as shown in Figure 4, at this moment, the rangefinder is placed on various flat base surfaces, as shown in Figure 5, because the support 7 is expanded, the contact area between the bottom surface and the base surface of the rangefinder is enlarged, Therefore, the range finder is closer to being perpendicular to the base surface, thereby reducing measurement errors.

When not in use, the bracket 7 can be retracted into the groove 5 to save space.

Claims (2)

1. A laser rangefinder that can reduce hand-held errors is characterized in that it comprises a housing (1), the front upper part of the housing (1) is provided with a display screen (2), and the front lower part of the housing (1) A button (3) is provided, a laser emission hole (4) is provided on the top surface of the casing (1), and an L-shaped groove (5) is formed on both sides of the lower part of the casing (1) along the elongation direction of the side flute. , the two grooves (5) are respectively located at the two ends of the two sides with sliding grooves (6), and the recesses of the two grooves (5) are respectively provided with L-shaped brackets that match the shape of the grooves (5) (7), both sides of one end of the two brackets (6) are fixedly connected with protrusions (8), respectively, and the four protrusions (8) are respectively located in the corresponding sliding grooves (6). 2. The range finder according to claim 1, characterized in that, when the bump (8) is located at the lower end of the slide groove (6), the bracket (7) exits the groove (5) and rotates 90°, the bracket (7) ) One end without the protrusion (8) is located on the same level as the bottom surface of the housing (1).

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