Sensor device for digital display measuring tape and digital display measuring tape

Abstract

The utility model relates to the technical field of measuring equipment, in particular to a sensor device for a digital display measuring tape and the digital display measuring tape. The sensor device includes an upper housing, a lower housing, and a sensor assembly. A cavity is formed between the upper shell and the lower shell, and a sensor assembly is installed in the cavity. The end parts of the upper shell and the lower shell respectively extend downwards to form paired limiting bosses, and a tape passing groove is formed between the opposite limiting bosses. The digital display measuring tape using the sensor device further comprises a measuring tape shell and a support located in the measuring tape shell, a clamping hook assembly position is arranged at the bottom of the support, a clamping hook is arranged on the upper surface of the upper shell in an upward protruding mode, and the clamping hook is connected with the clamping hook assembly position in a clamped mode. According to the utility model, the installation is simplified through sliding insertion, the limiting boss is adopted to replace an arc-shaped clamping structure to reduce the thickness, the clamping hook is additionally arranged to realize rapid clamping and fixing with the support, the assembly convenience and efficiency are significantly improved, and the digital display tape is especially suitable for a compact and portable small-sized digital display tape.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a sensor device for a digital display tape measure and a digital display tape measure using the sensor device. Background Art

[0002] Existing digital tape measures, due to their integration with functional modules like laser rangefinders, require consideration of internal space utilization. The laser rangefinder's measurement distance is limited by the size of the optical module. To enhance the laser rangefinder's capabilities while ensuring portability and ease of use, the design of digital tape measures has evolved from the traditional circular tape measure with the rangefinder module mounted directly on the outside to a square, integrated structure. This design not only facilitates grip and operation but also provides more internal space for the laser rangefinder module, enabling measurement at greater distances.

[0003] However, the sensor assembly of the existing digital tape measure has a relatively complex structure and usually uses an arc-shaped clip to limit the tape. This not only increases the thickness of the sensor and occupies a larger installation space, but also needs to be fixed to the inner wall of the shell during installation, making installation inconvenient using this structure. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] The utility model provides a sensor device for a digital display tape measure and a digital display tape measure, aiming to solve the problems that the sensor of a small portable digital display tape measure is thick and occupies a large space during installation.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention provides a sensor device for a digital tape measure and a digital tape measure. The sensor device comprises an upper housing, a lower housing, and a sensor assembly. The upper and lower housings are slidably connected and, when assembled, form a chamber therebetween. The sensor assembly, capable of measuring the stretched length of the tape measure, is mounted within the chamber.

[0008] The upper surface of the upper shell is provided with a hook protruding upward and capable of fixing the sensor device. Along the front-to-back direction of the chamber, a pair of first limiting bosses are extended downward from the end of the upper shell located on the rear side of the chamber, and a pair of second limiting bosses are extended downward from the end of the lower shell located on the front side of the chamber. The pair of first limiting bosses and the pair of second limiting bosses together constitute a tape measure slot, and the tape measure slot can pass through the tape measure.

[0009] A further technical solution is that after the upper shell and the lower shell are assembled in place, the end surface of the upper shell away from the first limiting boss abuts the second limiting boss, and the end surface of the lower shell away from the second limiting boss abuts the first limiting boss.

[0010] A further technical solution is that the sensor assembly includes a sensor circuit board and at least one photoelectric sensor mounted thereunder. Accordingly, the chamber is divided into a sensor circuit board receiving groove and a photoelectric sensor receiving groove, the sensor circuit board being positioned in the sensor circuit board receiving groove, and the photoelectric sensor being positioned in the photoelectric sensor receiving groove.

[0011] A further technical solution is that the lower housing has an arc-shaped structure that matches the shape of a tape measure, and the bottom of the arc-shaped structure is provided with a first flat surface along its length. The photoelectric sensor accommodating groove extends vertically through the first flat surface, and one end of the upper housing is provided with a sensor circuit board via.

[0012] A further technical solution is that after the upper shell and the lower shell are assembled in place, the positions to which the first limiting boss and the second limiting boss extend downward are on the same plane, and the plane is located below the first plane.

[0013] A further technical solution is to provide guide grooves with opposing notches on both sides of the upper housing along its length, with guiding slopes provided at the ends of the guide grooves. Guide rails are provided on both sides of the lower housing along its length, the guide rails being inserted into the guide grooves to connect the lower housing to the upper housing.

[0014] A digital tape measure using the above-mentioned sensor device for a digital tape measure also includes a tape measure housing and a bracket and a tape measure assembly fixed therein. The bottom of the bracket has a hook assembly position, and the upper surface of the upper housing is provided with a hook protruding upward, and the hook is engaged with the hook assembly position.

[0015] A further technical solution is that the digital display tape measure also includes a laser ranging module located inside the tape measure housing.

[0016] (3) Beneficial effects

[0017] The beneficial effects of the utility model are:

[0018] The sensor device for a digital tape measure proposed in this utility model utilizes a sliding connection between its upper and lower housings, greatly simplifying the installation process and making installation both simple and quick. This sensor device innovatively improves upon the traditional tape retaining mechanism, transitioning from an existing curved clip structure to a retaining boss design. This retaining boss engages with the tape edge, effectively preventing left-right deviation. Compared to the curved clip structure, the retaining boss design significantly reduces the overall thickness of the sensor device. This improvement is crucial for small digital tape measures with limited internal space and the desire for compactness and portability. Furthermore, the digital tape measure incorporating this sensor device features a hook on the upper housing that engages with a bracket within the digital tape measure, enabling the sensor device to be quickly secured to the bracket without requiring additional securing to the inner wall of the tape measure housing. This design allows the sensor device to be securely fixed to the bracket before the bracket itself is secured, significantly improving assembly convenience and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the explosion of the sensor device;

[0020] Figure 2 This is a schematic diagram of an explosion and decomposition of the sensor device from another perspective;

[0021] Figure 3 Schematic diagram of the cooperation between the sensor device and the bracket;

[0022] Figure 4 Schematic diagram of the internal structure of a digital tape measure equipped with a sensor device.

[0023] [Description of Reference Numerals]

[0024] 1: Upper shell; 11: Sensor circuit board through hole; 12: Hook; 13: Guide groove; 2: Lower shell; 21: Arc structure; 211: First plane; 22: Guide rail; 3: Sensor assembly; 31: Sensor circuit board; 32: Photoelectric sensor; 4: Chamber; 41: Sensor circuit board accommodating groove; 42: Sensor accommodating groove; 5: Limiting boss; 51: First limiting boss; 52: Second limiting boss; 6: Tape measure through groove; 7: Tape measure shell; 8: Bracket; 81: Assembly position with hook; 9: Laser ranging module; 10: Tape measure assembly. DETAILED DESCRIPTION

[0025] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0026] This embodiment provides a sensor device for a digital tape measure. When in use, the sensor device is installed inside the digital tape measure to collect the value on the tape and transmit the value to the display screen for display. Figure 1-Figure 3 As shown, it comprises an upper shell 1, a lower shell 2 and a sensor assembly 3. The upper shell 1 and the lower shell 2 are slidably connected and a chamber 4 is formed between the two after being assembled in place. The sensor assembly 3 capable of measuring the stretched length of the tape is installed in the chamber 4.

[0027] The upper surface of the upper shell 1 is provided with a hook 12 protruding upward and capable of fixing the sensor device. Along the front-to-back direction of the chamber 4, a pair of first limiting bosses 51 are extended downward from the end of the upper shell 1 located on the rear side of the chamber 4, and a pair of second limiting bosses 52 are extended downward from the end of the lower shell 2 located on the front side of the chamber 4. The pair of first limiting bosses 51 and the pair of second limiting bosses 52 together form a tape measure slot 6, through which the tape measure passes.

[0028] The sensor device for the digital tape measure described above utilizes a sliding connection between its upper and lower housings, greatly simplifying the installation process and making it both simple and quick. Furthermore, the sensor device replaces the existing curved clip structure with a stopper design. This stopper cooperates with the edge of the tape to effectively prevent left and right deviation of the tape. Furthermore, compared to the curved clip structure, the stopper design significantly reduces the overall thickness of the sensor device. This improvement is crucial for small digital tape measures that require limited internal space and seek compactness and portability.

[0029] In this embodiment, specifically, after the upper shell 1 and the lower shell 2 are assembled in place, the end surface of the upper shell 1 away from the first limiting boss 51 abuts against the second limiting boss 52, and the end surface of the lower shell 2 away from the second limiting boss 52 abuts against the first limiting boss 51.

[0030] It should be noted that the first limiting bosses 51 are located on the left and right sides of the end of the upper shell 1, and are arranged in a pair. The paired first limiting bosses 51 are symmetrical about the longitudinal centerline of the upper shell 1; the second limiting bosses 52 are located on the left and right sides of the end of the lower shell 2, and are arranged in a pair. The paired first limiting bosses 52 are symmetrical about the longitudinal centerline of the lower shell 2. The above-mentioned tape measure slot 6 is composed of the paired first limiting bosses 51 and the paired second limiting bosses 52.

[0031] The sensor assembly 3 includes a sensor circuit board 31 and at least one photoelectric sensor 32 installed thereunder. Accordingly, the chamber 4 is divided into a sensor circuit board accommodating groove 41 and a photoelectric sensor accommodating groove 42. The sensor circuit board 31 is placed in the sensor circuit board accommodating groove 41, and the photoelectric sensor 32 is placed in the photoelectric sensor accommodating groove 42.

[0032] Specifically, in this embodiment, there are three photoelectric sensors 32. The photoelectric sensors 32 are mainly used to measure the length of the tape passing below the sensor device.

[0033] Specifically, the lower housing 2 has an arc-shaped structure 21 that matches the shape of a tape measure. A first flat surface 211 is defined along the length of the bottom of the arc-shaped structure 21. A photoelectric sensor accommodating groove 42 extends vertically through the first flat surface 211. A sensor circuit board via 11 is defined at one end of the upper housing 1.

[0034] In this embodiment, after the upper shell 1 and the lower shell 2 are assembled, the first limiting boss 51 and the second limiting boss 52 extend downwardly to the same plane, and the plane is located below the first plane 211. This is to ensure that the tape can pass through the tape slot 6 smoothly.

[0035] In this embodiment, guide grooves 13 are formed on both sides of the upper housing 1 along its length, with opposing notches. Guide slopes are provided at the ends of the guide grooves 13. Guide rails 22 are also provided on both sides of the lower housing 2 along its length. These rails 22 engage with the guide grooves 13, thereby inserting the lower housing 2 into the upper housing 1. This plug-in mechanism provides simple and efficient installation.

[0036] It should be noted that the guide groove 13 and the guide rail 12 are in an interference fit, and the guide rail 12 requires a lot of force to be inserted into the guide groove 13. After the guide rail 12 slides into place, it is difficult to pull it apart. Furthermore, if a tighter fit is required, the connection can be fixed by dispensing glue, or by gluing and bonding at a later stage.

[0037] The present invention also provides a digital tape measure, comprising the aforementioned digital tape measure sensor device, a tape measure housing 7, and a bracket 8 and tape measure assembly 10 secured thereto. The bottom of bracket 8 features a hook assembly 81, with hooks 12 engaging with hook assembly 81, enabling the sensor device to be quickly secured to bracket 8 without requiring additional securing to the inner wall of the tape measure housing 7. This design allows the sensor device to be securely fastened to bracket 8 before the bracket 8 itself is secured, significantly improving assembly convenience and efficiency.

[0038] Furthermore, the digital tape measure also includes a laser distance measurement module 9 located inside the tape measure housing 7. Since the sensor assembly 3 saves some space inside the tape measure housing, the laser distance measurement module 9 can be installed with a larger module to obtain a longer distance measurement.

[0039] In addition, the descriptions of "first," "second," and so on in this embodiment are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this embodiment, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In this embodiment, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0041] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sensor device for a digital tape measure, characterized in that: The sensor device comprises an upper housing (1), a lower housing (2) and a sensor assembly (3); The upper shell (1) and the lower shell (2) are slidably connected and a chamber (4) is formed between the two after they are assembled in place. The sensor assembly (3) capable of measuring the stretched length of the tape measure is installed in the chamber (4); The upper surface of the upper shell (1) is provided with a hook (12) protruding upward and capable of fixing the sensor device. Along the front-to-back direction of the chamber (4), the end of the upper shell (1) located on the rear side of the chamber (4) is provided with a pair of first limiting bosses (51) extending downward, and the end of the lower shell (2) located on the front side of the chamber (4) is provided with a pair of second limiting bosses (52) extending downward. The pair of first limiting bosses (51) and the pair of second limiting bosses (52) together constitute a tape measure slot (6), and the tape measure slot (6) can pass through the tape measure.

2. The sensor device for a digital tape measure according to claim 1, wherein: After the upper shell (1) and the lower shell (2) are assembled in place, the end surface of the upper shell (1) away from the first limiting boss (51) abuts against the second limiting boss (52), and the end surface of the lower shell (2) away from the second limiting boss (52) abuts against the first limiting boss (51).

3. The sensor device for a digital tape measure according to claim 2, wherein: The sensor assembly (3) includes a sensor circuit board (31) and at least one photoelectric sensor (32) mounted thereunder; Correspondingly, the chamber (4) is divided into a sensor circuit board accommodating groove (41) and a photoelectric sensor accommodating groove (42); the sensor circuit board (31) is placed in the sensor circuit board accommodating groove (41); and the photoelectric sensor (32) is placed in the photoelectric sensor accommodating groove (42).

4. The sensor device for a digital tape measure according to claim 3, wherein: The lower housing (2) has an arc-shaped structure (21) matching the shape of a tape measure, a first plane (211) is provided at the bottom of the arc-shaped structure (21) along its length, the photoelectric sensor accommodating groove (42) passes through the first plane (211) from top to bottom, and a sensor circuit board through-hole (11) is provided at one end of the upper housing (1).

5. The sensor device for a digital tape measure according to claim 4, wherein: After the upper shell (1) and the lower shell (2) are assembled in place, the positions to which the first limiting boss (51) and the second limiting boss (52) extend downward are located on the same plane, and the plane is located below the first plane (211).

6. The sensor device for a digital tape measure according to claim 1, wherein: Along the length direction of the upper shell (1), two sides of the upper shell (1) are provided with guide grooves (13) with notches facing each other, and guide slopes are provided at the ends of the guide grooves (13); Along the length direction of the lower shell (2), guide rails (22) are provided on both sides of the lower shell (2), and the guide rails (22) are inserted into the guide grooves (13), thereby inserting the lower shell (2) into the upper shell (1).

7. A digital tape measure, characterized in that: The digital tape measure includes the sensor device for the digital tape measure according to any one of claims 1 to 6.

8. The digital tape measure according to claim 7, wherein: It also includes a tape measure housing (7), a bracket (8) and a tape measure assembly (10) fixed therein, wherein the bottom of the bracket (8) is provided with a hook assembly position (81), and the hook (12) is engaged with the hook assembly position (81).

9. The digital tape measure according to claim 8, wherein: The digital display tape measure further comprises a laser distance measurement module (9) located inside the tape measure housing (7).

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