A hand-electric integrated tape measure

Abstract

The application discloses a hand and motor integrated tape measure, which comprises a tape housing, a tape, a guide wheel, a motor driving assembly, a control module, a tape locking key, a double detection module, a switching button, a tape wheel and a battery; the tape is wound on the tape wheel, the guide wheel and the tape locking key are arranged on a tape movement path, the motor driving assembly, the control module, the double detection module and the battery are installed inside the tape housing, the switching button is arranged on the outside of the tape housing and is connected with the motor driving assembly, the motor driving assembly comprises a driving motor, an adjusting seat, a driving wheel set, a fastening sleeve and a compression spring, the adjusting seat is connected with the switching button, and the driving motor is installed in the mounting seat. The application has the advantages that the hand and motor integrated tape measure has two operation modes, i.e., a manual mode and a motor mode, can be flexibly switched according to use scenes, has a double detection function, guarantees use safety and stability, and improves use convenience.

Description

Technical Field

[0001] This invention relates to the field of surveying and measuring tools, and more specifically, to an improvement of a measuring tape. Background Technology

[0002] A measuring tape is a common measuring tool widely used in construction, decoration, and machining, among other fields. Its core function is to achieve quick and accurate length measurement. Currently, measuring tapes on the market are mainly divided into two categories: manual and electric. Manual measuring tapes rely on manual stretching and spring retraction to extend the tape. They are simple in structure and low in cost, but require significant manpower for measuring longer distances or frequent tape extension / retraction, making them less convenient to use and prone to hand fatigue with prolonged use. Electric measuring tapes rely on a motor to automatically extend and retract the tape, making them easier to operate. However, they suffer from insufficient battery life; they cannot be used normally when the battery is dead, resulting in poor emergency use. Furthermore, their structure is relatively complex, leading to higher maintenance costs. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a manual and electric integrated measuring tape with both manual and electric operation modes, which can be flexibly switched according to the usage scenario. It also has dual detection functions to ensure safety and stability during use and improve ease of use. This solves the problems of existing measuring tapes that can only be operated manually and have poor ease of use, or that can only be operated electrically and have insufficient battery life and poor emergency response capabilities, while also lacking an effective safety detection mechanism.

[0005] (II) Technical Solution

[0006] To achieve the advantages of having both manual and electric operation modes, which can be flexibly switched according to the usage scenario, and having dual detection functions to ensure safety and stability and improve ease of use, the specific technical solution adopted by this invention is as follows: It includes a ruler shell, a ruler belt, a guide wheel, a motor drive assembly, a control module, a ruler belt locking key, a dual detection module, a switching button, a ruler wheel, and a battery; the ruler belt is wound around the ruler wheel, the guide wheel and the ruler belt locking key are located on the movement path of the ruler belt, the motor drive assembly, the control module, the dual detection module and the battery are installed inside the ruler shell, the switching button is located on the outside of the ruler shell and connected to the motor drive assembly, the motor drive assembly includes a drive motor, an adjustment seat, a drive wheel set, a fastening sleeve and a compression spring, the adjustment seat is connected to the switching button, the drive motor is installed in the mounting seat, the drive wheel set is connected to the upper end of the drive motor, the fastening sleeve passes through both sides of the adjustment seat and connects to the inside of the ruler shell, one end of the compression spring touches the adjustment seat, and the other end is limited inside the ruler shell.

[0007] Furthermore, the ruler housing is provided with a positioning groove, a limiting block and an adjustment groove. The two sets of limiting blocks are located on both sides of the adjustment groove and pass through both ends of the adjustment seat. The positioning groove is elastically connected to the bottom of the compression spring, and the switching button is moved and adjusted in the adjustment groove.

[0008] Furthermore, the adjusting seat is provided with a sliding groove, a sliding pin, a limiting groove and a mounting hole. Two sets of the sliding grooves are opened on both sides of the adjusting seat, the sliding pin is set at the front of the adjusting seat and connected to the switching button, the drive motor is connected in the mounting hole, and the limiting groove is elastically connected to the upper end of the compression spring.

[0009] Furthermore, the drive wheel assembly is located on top of the drive motor and connected to the drive shaft of the drive motor. The drive wheel assembly is located at the lower end of the belt and corresponds to the guide wheel.

[0010] Furthermore, the guide wheel is adapted to the measuring belt.

[0011] Furthermore, the dual detection module includes a resistance detection unit and a sensing detection unit. The resistance detection unit is a current detection module or a pressure sensor, and the sensing detection unit is a Hall sensor or a photoelectric sensor.

[0012] Furthermore, the ruler housing is also equipped with an on / off switch, an extension button, and a retraction button, which are located on the outside of the ruler housing. These buttons are used to control the electric extension and retraction of the ruler.

[0013] Furthermore, the tape locking key is used to brake and position the tape at any location.

[0014] Furthermore, a coil spring is provided inside the measuring wheel.

[0015] Furthermore, the battery output terminal is electrically connected to the power input terminal of the control module and the power interface of the motor drive component, respectively. The signal output terminal of the control module is electrically connected to the control input terminal of the motor drive component, and the control module is electrically connected to the switching button. The dual detection module is bidirectionally electrically connected to the control module.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a manual and electric integrated measuring tape, which has the following beneficial effects:

[0018] It features both manual and electric operating modes, which can be quickly switched via a button. Electric mode is effortless to operate and suitable for longer distance measurements or frequent extension / retraction scenarios. Manual mode can be used in emergencies when the battery is dead, solving the problems of poor convenience or emergency use of existing measuring tapes, and adapting to various usage scenarios. The resistance detection unit can detect changes in resistance during tape extension / retraction, preventing motor damage or tape breakage. The sensing detection unit can detect the position and speed of the tape, preventing excessive stretching or premature retraction that could cause damage, thus improving safety and extending the tape's lifespan. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 It corresponds Figure 1 Top view;

[0023] Figure 4 This is the second schematic diagram of the internal structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the adjusting seat 42 of the present invention;

[0025] Figure 6 This is a schematic diagram of the principle of the present invention.

[0026] In the diagram: 1. Ruler housing; 2. Ruler belt; 3. Guide wheel; 4. Motor drive assembly; 5. Control module; 6. Ruler belt locking key; 7. Dual detection module; 8. Switching button; 9. Ruler wheel; 10. Battery; 11. Positioning groove; 12. Limiting block; 13. Adjustment groove; 41. Drive motor; 42. Adjustment seat; 43. Drive wheel assembly; 44. Fastening sleeve; 45. Compression spring; 421. Sliding groove; 422. Sliding pin; 423. Limiting groove; 424. Mounting hole; 71. Resistance detection unit; 72. Sensing detection unit. Detailed Implementation

[0027] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] According to an embodiment of the present invention, a manual / electric integrated measuring tape is provided.

[0029] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-6 As shown, a manual / electric integrated measuring tape according to an embodiment of the present invention includes a casing 1, a tape 2, a guide wheel 3, a motor drive assembly 4, a control module 5, a tape locking key 6, a dual detection module 7, a switching button 8, a measuring wheel 9, and a battery 10; the tape 2 is wound around the measuring wheel 9, the guide wheel 3 and the tape locking key 6 are disposed on the movement path of the tape 2, the motor drive assembly 4, the control module 5, the dual detection module 7 and the battery 10 are installed inside the casing 1, and the switching button 8 is disposed on the outside of the casing 1 and connected to the motor drive assembly 4.

[0030] The motor drive assembly 4 includes a drive motor 41, an adjusting seat 42, a drive wheel set 43, a fastening sleeve 44, and a compression spring 45. The adjusting seat 42 is connected to the switching button 8. The drive motor 41 is installed inside the adjusting seat 42. The drive wheel set 43 is connected to the upper end of the drive motor 41. The fastening sleeve 44 passes through both sides of the adjusting seat 42 and connects to the inside of the ruler housing 1. One end of the compression spring 45 touches the adjusting seat 42, and the other end is limited inside the ruler housing 1. The adjusting seat 42 can slide along the limiting block 12 under the control of the switching button 8, thereby driving the drive wheel set 43 to move closer to or away from the ruler belt 2, realizing the switching between electric mode and manual mode: when the drive wheel set 43 is in contact with the ruler belt 2, it is in electric mode, and the drive motor 41 drives the drive wheel set 43 to rotate, thereby driving the ruler belt 2 to extend or retract; when the drive wheel set 43 is separated from the ruler belt 2, it is in manual mode, and the extension or retraction of the ruler belt 2 can be achieved by manually stretching or resetting the spring.

[0031] The ruler housing 1 is provided with a positioning groove 11, a limiting block 12, and an adjusting groove 13. Two sets of limiting blocks 12 are located on both sides of the adjusting groove 13 and pass through both ends of the adjusting seat 42. The positioning groove 11 is elastically connected to the bottom of the compression spring 45. The switching button 8 is movable within the adjusting groove 13. The limiting block 12 is used to limit the sliding direction of the adjusting seat 42 to prevent the adjusting seat 42 from shifting and to ensure the contact accuracy between the drive wheel assembly 43 and the ruler belt 2. The compression spring 45 is fixed through the positioning groove 11 and can apply an elastic force to the adjusting seat 42 to ensure that the drive wheel assembly 43 and the ruler belt 2 are tightly contacted in electric mode and to avoid slippage.

[0032] The adjusting seat 42 is provided with a sliding groove 421, a sliding pin 422, a limiting groove 423, and a mounting hole 424. Two sets of sliding grooves 421 are formed on both sides of the adjusting seat 42. The sliding pin 422 is located at the front of the adjusting seat 42 and is connected to the switching button 8. The drive motor 41 is connected in the mounting hole 424. The limiting groove 423 is elastically connected to the upper end of the compression spring 45. The sliding groove 421 is adapted to the limiting block 12 to ensure smooth sliding of the adjusting seat 42. The sliding pin 422 is used to realize the linkage between the adjusting seat 42 and the switching button 8. Pressing the switching button 8 will drive the adjusting seat 42 to slide. The limiting groove 423 is used to limit the upper end of the compression spring 45 to prevent the compression spring 45 from deviating.

[0033] The drive wheel assembly 43 is located on top of the drive motor 41 and connected to the drive shaft of the drive motor 41. The drive wheel assembly 43 is located at the lower end of the scale belt 2 and corresponds to the guide wheel 3. The guide wheel 3 is adapted to the scale belt 2 and is used to guide the movement direction of the scale belt 2, avoid deviation or jamming during the extension and retraction of the scale belt 2, and reduce the friction between the scale belt 2 and the scale housing 1, thereby extending the service life of the scale belt 2.

[0034] The dual detection module 7 includes a resistance detection unit 71 and a sensing detection unit 72. The resistance detection unit 71 is a current detection module or a pressure sensor, and the sensing detection unit 72 is a Hall sensor or a photoelectric sensor. The resistance detection unit 71 is used to detect the resistance change during the extension and retraction of the tape 2. When the resistance is too great, such as when the tape is stuck or encounters an obstacle, it transmits a signal to the control module 5. The control module 5 controls the drive motor 41 to stop running to avoid damage to the motor or breakage of the tape. The sensing detection unit 72 is used to detect the extension and retraction position and speed of the tape 2. When the tape 2 is stretched to its maximum length or retracted to its initial position, the sensing detection unit 72 sends a signal to the control module 5. The control module 5 controls the drive motor 41 to stop running to prevent the tape 2 from being overstretched or retracted too quickly, which could cause damage.

[0035] The ruler housing 1 is also equipped with a power switch, an extension button, and a retraction button. The power switch, extension button, and retraction button are located on the outside of the ruler housing 1 and are used to control the electric extension and retraction of the ruler: pressing the power switch starts the electric mode; pressing the extension button controls the drive motor 41 to rotate in the forward direction, causing the ruler belt 2 to extend; pressing the retraction button controls the drive motor 41 to rotate in the reverse direction, causing the ruler belt 2 to retract.

[0036] The tape locking key 6 is used to brake and position the tape 2 at any position. When the tape 2 is stretched to the required length, pressing the tape locking key 6 will fix the tape 2 in the current position for easy measurement and reading. After releasing the tape locking key 6, the tape 2 can be reset by the coil spring or motor drive.

[0037] A coil spring is installed inside the ruler wheel 9. One end of the coil spring is connected to the ruler wheel 9, and the other end is fixed inside the ruler housing 1. In manual mode, when the ruler belt 2 is stretched, the coil spring is compressed. After the ruler belt 2 is released, the coil spring returns to its original position and drives the ruler wheel 9 to rotate, thereby realizing the automatic retraction of the ruler belt 2.

[0038] The output terminal of the battery 10 is electrically connected to the power input terminal of the control module 5 and the power interface of the motor drive assembly 4, respectively, to provide working power for the control module 5 and the motor drive assembly 4; the signal output terminal of the control module 5 is electrically connected to the control input terminal of the motor drive assembly 4 and the control module 5 is electrically connected to the switch button 8. The control module 5 is used to receive signals from the switch button 8, the dual detection module 7 and each control button, and to control the running state of the drive motor 41 according to the signals; the dual detection module 7 is bidirectionally electrically connected to the control module 5. The dual detection module 7 transmits the detected signals to the control module 5, and the control module 5 issues corresponding control commands according to the signals. At the same time, the control module 5 can supply power and adjust the parameters of the dual detection module 7.

[0039] Working principle: When in use, press the switch button 8. The switch button 8 drives the adjusting seat 42 to slide along the limit block 12 via the sliding pin 422, so that the drive wheel set 43 is in contact with the ruler 2, and enters the electric mode. Press the extend button, and the control module 5 controls the drive motor 41 to rotate in the forward direction. The drive motor 41 drives the drive wheel set 43 to rotate, and then drives the ruler 2 to extend along the guide wheel 3. The dual detection module 7 detects the resistance and position status of the ruler 2 in real time. When the ruler 2 is stretched to the required length, press the ruler locking button 6 to fix the ruler 2 and take the measurement reading. After the measurement is completed, release the ruler locking button 6 and press the retract button. The control module 5 controls the drive motor 41 to rotate in the reverse direction, driving the ruler 2 to retract. When the ruler 2 is retracted to the initial position, the sensing detection unit 72 sends a signal to the control module 5, and the control module 5 controls the drive motor 41 to stop running. When battery 10 is depleted or electric mode is not needed, press switch button 8 to slide adjustment seat 42, separating drive wheel assembly 43 from tape 2 and entering manual mode. Manually stretch tape 2, compressing the coil spring. After stretching to the desired length, press tape locking button 6 to lock it. Release tape locking button 6, the coil spring resets, and drives tape wheel 9 to rotate, achieving automatic retraction of tape 2. If tape 2 gets stuck or encounters an obstacle during extension or retraction, resistance detection unit 71 detects an abnormal increase in current in drive motor 41 and transmits a signal to control module 5. Control module 5 immediately stops drive motor 41 to prevent motor damage or tape breakage.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A manual / electric integrated measuring tape, characterized in that: It includes a ruler housing (1), a ruler belt (2), a guide wheel (3), a motor drive assembly (4), a control module (5), a ruler belt locking key (6), a dual detection module (7), a switching button (8), a ruler wheel (9), and a battery (10). The ruler belt (2) is wound around the ruler wheel (9), the guide wheel (3) and the ruler belt locking key (6) are located on the movement path of the ruler belt (2), the motor drive assembly (4), the control module (5), the dual detection module (7) and the battery (10) are installed inside the ruler housing (1), and the switching button (8) is located on the outside of the ruler housing (1) and is connected to the motor drive assembly (1). The motor drive assembly (4) is connected to the motor drive assembly (4), which includes a drive motor (41), an adjustment seat (42), a drive wheel set (43), a fastening sleeve (44), and a compression spring (45). The adjustment seat (42) is connected to the switching button (8). The drive motor (41) is installed in the mounting seat (42). The drive wheel set (43) is connected to the upper end of the drive motor (41). The fastening sleeve (44) passes through both sides of the adjustment seat (42) and is connected to the inside of the ruler shell (1). One end of the compression spring (45) touches the adjustment seat (42), and the other end is limited inside the ruler shell (1).

2. The manual / electric integrated measuring tape according to claim 1, characterized in that: The ruler shell (1) is provided with a positioning groove (11), a limiting block (12) and an adjustment groove (13). The two sets of limiting blocks (12) are located on both sides of the adjustment groove (13) and pass through both ends of the adjustment seat (42). The positioning groove (11) is elastically connected to the bottom of the compression spring (45). The switching button (8) is movable and adjusted in the adjustment groove (13).

3. The manual / electric integrated measuring tape according to claim 1, characterized in that: The adjusting seat (42) is provided with a sliding groove (421), a sliding pin (422), a limiting groove (423) and a mounting hole (424). Two sets of the sliding grooves (421) are opened on both sides of the adjusting seat (42). The sliding pin (422) is set at the front of the adjusting seat (42) and connected to the switching button (8). The drive motor (41) is connected in the mounting hole (424). The limiting groove (423) is elastically connected to the upper end of the compression spring (45).

4. The manual / electric integrated measuring tape according to claim 1, characterized in that: The drive wheel assembly (43) is located on top of the drive motor (41) and connected to the drive shaft of the drive motor (41). The drive wheel assembly (43) is located at the lower end of the belt (2) and corresponds to the guide wheel (3).

5. The manual / electric integrated measuring tape according to claim 1, characterized in that: The guide wheel (3) is adapted to the ruler (2).

6. The manual / electric integrated measuring tape according to claim 1, characterized in that: The dual detection module (7) includes a resistance detection unit (71) and a sensing detection unit (72). The resistance detection unit (71) is a current detection module or a pressure sensor, and the sensing detection unit (72) is a Hall sensor or a photoelectric sensor.

7. The manual / electric integrated measuring tape according to claim 1, characterized in that: The ruler shell (1) is also provided with an on / off switch, an extension button and a retraction button, which are located on the outside of the ruler shell (1).

8. The manual / electric integrated measuring tape according to claim 1, characterized in that: The tape locking key (6) is used to brake and position the tape (2) at any position.

9. The manual / electric integrated measuring tape according to claim 1, characterized in that: A coil spring is installed inside the measuring wheel (9).

10. The manual / electric integrated measuring tape according to claim 1, characterized in that: The output terminal of the battery (10) is electrically connected to the power input terminal of the control module (5) and the power interface of the motor drive component (4), respectively. The signal output terminal of the control module (5) is electrically connected to the control input terminal of the motor drive component (4), and the control module (5) is electrically connected to the switching button (8). The dual detection module (7) is bidirectionally electrically connected to the control module (5).

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