CN218916229U

CN218916229U - Distance measuring device

Info

Publication number: CN218916229U
Application number: CN202223321952.2U
Authority: CN
Inventors: 杨忠义
Original assignee: Dongguan Terma Electronics Co ltd
Current assignee: Dongguan Terma Electronics Co ltd
Priority date: 2022-12-10
Filing date: 2022-12-10
Publication date: 2023-04-25
Anticipated expiration: 2032-12-10

Abstract

The utility model discloses a range finder, which comprises a main body, wherein a power supply unit, a control circuit, an output device and a grid ruler reading end are arranged in the main body, a battery is arranged on one surface of the main body facing a rear cover plate, the grid ruler reading end is arranged on one side of the main body, the power supply unit is electrically connected with the control circuit, the output device and the grid ruler reading end, the power supply unit supplies power for the control circuit, the output device and the grid ruler reading end, the control circuit is in signal connection with the grid ruler reading end and the output device, the control circuit reads signals from the grid ruler reading end and sends the signals to the output device, a counting wheel is arranged on the lower side of the main body, the outer edge of the counting wheel is exposed out of the main body, and a round grid ruler is arranged on the side wall of the main body corresponding to the position of the counting wheel. The utility model has the advantages that: simple structure, low assembly cost and high measurement accuracy.

Description

Distance measuring device

Technical Field

The utility model relates to a measuring tool, in particular to a rolling ruler for measuring distance.

Background

In real life, people often use measuring tools (such as a ruler and a tape) to measure map proportion, furniture size and room size, but for measuring objects with uneven and complex outline such as a sofa cushion or a sofa backrest, the traditional ruler and the tape cannot measure; in addition, when marking is required on the surface of the object to be measured, such as wood or metal, people often lack necessary and proper tools, and only need to discard the purpose of marking.

The prior art provides an electronic rolling ruler, for example, chinese utility model CN208520349U discloses an electronic rolling ruler, which comprises a fixed seat, a roller and a display screen, wherein the fixed seat is of a disc-shaped structure with an inner cavity, the roller is rotatably sleeved on the outer peripheral surface of the fixed seat and is connected with an electronic detection part which is arranged in the inner cavity and is used for recording the rotation angle of the roller through a transmission part, and the display screen is arranged on the end surface of the fixed seat and is used for displaying the rotation information of the roller obtained by the electronic detection part. When the electronic rolling ruler is used for measuring small sizes, a user can clamp the fixing seat by hand, and the rolling wheel rolls around the fixing seat on the surface of a measured object to measure the measured sizes. However, the electronic rolling ruler with the improved structure is complex in internal structure due to the fact that the transmission part is arranged between the rolling wheel and the electronic detection part, assembly cost is high, and measurement accuracy can be affected by accuracy of the transmission part.

Disclosure of Invention

The utility model aims to solve the technical problems, and provides the range finder with simple structure, low assembly cost and high measurement accuracy.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides a range finder, includes the main part, install power supply unit, control circuit, output device and bars chi reading end in the main part, peg graft on the main part and have leaded light post, the positive and negative both sides of main part are equipped with front shroud and back shroud respectively, be equipped with the battery in the one side of main part towards the back shroud, bars chi reading end installs in main part one side, power supply unit and control circuit, output device and bars chi reading end electric connection, power supply unit is control circuit, output device and bars chi reading end power supply, control circuit and bars chi reading end and output device signal connection, control circuit reads the signal from bars chi reading end to with signal transmission to output device, the counter wheel is installed to main part downside, the outer fringe of counter wheel exposes the main part, be equipped with round bars chi with counter wheel position correspondence department on the main part lateral wall.

Further, the round grating ruler adopts a grating ruler, and a grating reading end corresponding to the grating ruler adopts a grating reading head.

Further, the round grating ruler adopts a magnetic grating ruler, and a grating ruler reading end corresponding to the magnetic grating ruler adopts a magnetic head.

Further, the round grating ruler adopts a sensing grating ruler, and a grating ruler reading end corresponding to the sensing grating ruler adopts a primary coil and a secondary coil.

Further, the round grating ruler adopts a capacitance grating ruler, and a grating ruler reading end corresponding to the capacitance grating ruler adopts a capacitance grating reading head.

Further, the power supply unit is connected with the side wall of the main body, and the power supply unit is opposite to the circular grid ruler in position.

Further, the output device adopts a display screen, the display screen is in signal connection with the grid ruler reading end, and the display screen is arranged on the front end cover.

Further, the display screen is controlled by touch.

Further, a control key is arranged on the side face of the main body, and the control key is in signal connection with the control circuit.

Compared with the prior art, the utility model has the advantages that:

the grating ruler and the reading end thereof are matched with the rotation angle of the counting wheel, so that the rolling distance of the counting wheel is measured, the grating ruler and the reading end do not need to be connected physically, the assembly is convenient, and the error caused by a transmission element is omitted, so that the measurement error of the grating ruler is small; the counting wheel adopts a smaller diameter design, and accurate measurement can be realized at some smaller corners. And the modularized design is adopted, so that the assembly efficiency is higher.

Drawings

Fig. 1 is a schematic structural diagram of an improved range finder according to an embodiment of the present application;

FIG. 2 is an exploded view of an improved range finder according to an embodiment of the present application;

FIG. 3 is a schematic diagram illustrating an improved range finder according to an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating the use of an improved range finder according to an embodiment of the present application;

FIG. 5 is a schematic diagram illustrating the use of an improved range finder according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another embodiment of the present application;

fig. 7 is a schematic front view of the embodiment of fig. 6.

Reference numerals: 1. a display; 2. an auxiliary grid; 3. a counting wheel; 4. a light guide column; 5. a main body; 6. a battery; 7. and a rear cover plate.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indications such as up, down, left, right, front, and rear … … in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model will now be further described with reference to the accompanying drawings.

Example 1

The embodiment discloses a handheld range finder, as shown in fig. 1 and 2, wherein the main body of the range finder is an injection molded flat cylinder, one side of the main body is provided with a display 1, and the other side is provided with a secondary grid 2 (a reading head of a grid-sensing ruler comprises a primary coil and a secondary coil); the main body is internally provided with a power supply circuit and a control circuit, and the power supply circuit is used for supplying power to the auxiliary grid 2 and the control circuit. The display 1 may be a digital display or an LED display. In this example, the display 1 adopts a digital display, and a key is arranged below the digital display to control the functions of measuring units, measuring scenes, resetting and the like.

The counting wheel 3 is inserted into the main body 5 through one end of the rotating shaft of the counting wheel, and the other end of the counting wheel is inserted into the round hole of the auxiliary grid 2. The main grid (round grid ruler, made of iron oxide or conductor) is installed on the side of the counter wheel 3 facing the auxiliary grid 2, the main grid and the auxiliary grid 2 are matched to read the rotation angle of the counter wheel 3 relative to the main body through electromagnetic induction change between the main grid and the auxiliary grid, and then the angle value is converted into length by the control circuit and is output through the display 1.

The light guide column 4 is inserted into the body 5 to provide an indication of the working state of the range finder.

A battery 6 and a rear cover plate 7 are arranged on the other side of the main body 5; the battery 6 is installed inside the main body 5, and the back cover plate 7 is fixed on the end face of the main body 5 through glue.

At the opposite side of the body 5 from the counter wheel 3, a battery charging interface is provided.

The following is an application example of a range finder provided in the embodiments of the present application, and refer to fig. 3, fig. 4, and fig. 5.

When the handheld distance measuring device is used, the handheld distance measuring device is held by a hand to enable the counting wheel 3 to rotate on the surface of a measured object, and the counting wheel 3 is driven to rotate relative to the main body 5, so that the main grid and the auxiliary grid 2 form a relative motion relationship, and the size of the measured object is measured.

Example 2

Another embodiment of the present utility model, as shown in fig. 6 and 7, is a hand-held range finder, which basically comprises a main body 5, a touch screen 8 and a counter wheel 3.

The primary coil of the sensing grid and the electronic circuit of the secondary coil are integrated on the auxiliary grid 2 by adopting a copper-clad plate printing technology, the auxiliary grid 2 is attached to one side of the main body 5, the main grid is attached to one side of the counting wheel 3, the main grid is opposite to the auxiliary grid 2, and the counting wheel 3 is inserted into the main body 5 through one end of a rotating shaft with the counting wheel and the other end of the rotating shaft with the counting wheel is inserted into a round hole of the auxiliary grid 2. The body 5, counter wheel 3 and back plate 7 are assembled to form a flat unitary device.

As shown in fig. 7, the touch screen 8 is mounted on the other side of the main body 5, a control key area 9 is also mounted under the touch screen 8, the key area 9 is used for controlling functions of measuring units, measuring scenes, resetting and the like, and a battery charging interface is arranged on the other side of the main body 5 far from the counting wheel 3. The main body 5 is internally provided with a control circuit and a rechargeable battery, and the control circuit is used for reading the rotation angle of the main grid relative to the auxiliary grid 2 obtained by measurement of the auxiliary grid 2 and outputting a corresponding data value touch screen 8. The rechargeable battery is connected with the charging interface.

In some cases, the touch screen 8 may be omitted, the output of the control circuit may be connected to a bluetooth module, and measurement data may be output to the smart device paired therewith through bluetooth communication.

In this embodiment, the circular grating ruler can also be a magnetic grating ruler and a matched reading head or a grating ruler and a matched reading head.

The utility model and its embodiments have been described in a non-limiting manner, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. A range finder comprising a main body, characterized in that: the utility model discloses a portable electronic device, including main part, gate chi, counter wheel, output device, power supply unit, output device and gate chi reading end are installed to the main part, peg graft in the main part has the leaded light post, the front and back cover plate is equipped with respectively to main part tow sides, be equipped with the battery on the main part towards the back cover plate, gate chi reading end installs in main part one side, power supply unit and control circuit, output device and gate chi reading end electric connection, power supply unit is control circuit, output device and gate chi reading end power supply, control circuit and gate chi reading end and output device signal connection, control circuit reads the signal from gate chi reading end to with signal transmission to output device, the counter wheel is installed to main part downside, the outer fringe of counter wheel exposes the main part, be equipped with round gate chi with counter wheel position correspondence department on the main part lateral wall.

2. A range finder as claimed in claim 1, wherein: the round grating ruler adopts a grating ruler, and a grating reading head is adopted at a grating ruler reading end corresponding to the grating ruler.

3. A range finder as claimed in claim 1, wherein: the round grating ruler adopts a magnetic grating ruler, and a grating ruler reading end corresponding to the magnetic grating ruler adopts a magnetic head.

4. A range finder as claimed in claim 1, wherein: the circular grating ruler adopts a sensing grating ruler, and a grating ruler reading end corresponding to the sensing grating ruler adopts a primary coil and a secondary coil.

5. A range finder as claimed in claim 1, wherein: the round grating ruler adopts a capacitance grating ruler, and a grating ruler reading end corresponding to the capacitance grating ruler adopts a capacitance grating reading head.

6. A range finder as claimed in claim 1, wherein: the power supply unit is connected with the side wall of the main body, and the power supply unit is opposite to the circular grid ruler in position.

7. A rangefinder according to any of the claims 1-5, characterized in that: the output device adopts a display screen which is in signal connection with the reading end of the grid ruler, and the display screen is arranged on the front end cover.

8. A range finder as claimed in claim 7, wherein: the display screen adopts a touch control display screen.

9. A range finder as claimed in claim 1, wherein: the side of the main body is provided with a control key which is connected with a control circuit in a signal way.