Handheld tea bud length measuring instrument

Abstract

The utility model relates to the field of measuring rulers, and discloses a handheld tea bud length measuring instrument which comprises a ruler body. The fixed measuring claw is mounted at one end of the scale body; the sliding measurement assembly comprises a sliding block which is arranged on the outer wall of the scale body in a sliding and sleeving manner; the movable measuring claw is arranged at one end of the side wall of one side, close to the fixed measuring claw, of the sliding block, and is symmetrically distributed with the fixed measuring claw; the tea garden field operation is adapted through the handheld design, single measurement can be completed only through the three steps of sliding block pushing, rotating locking and reading, the consumed time does not exceed 5 seconds, compared with a traditional ruler, the measurement efficiency is improved by more than three times, the rotation angle is limited through cooperation of a three-quarter arc-shaped groove and an arc-shaped rotating plate, and the measurement accuracy is improved. Misoperation is avoided, the learning cost is reduced, accurate positioning of tea buds is achieved through the symmetrically-arranged measuring claws, and rolling or deformation of the tea buds is avoided; the meshing structure of the gear and the toothed plate ensures that the sliding block moves stably and does not deviate.

Description

Technical Field

[0001] This application relates to the field of measuring rulers, and in particular to a handheld tea bud length measuring instrument. Background Technology

[0002] In the tea production and processing industry, the length of tea buds is one of the key indicators for judging the quality grade of tea and determining the optimal harvesting time. Traditional methods for measuring the length of tea buds mostly rely on general measuring tools such as rulers and vernier calipers, which have the following problems: First, the tea buds and measuring tools need to be manually fixed during measurement, which is prone to deviation of the measurement reference due to hand tremors, making it difficult to guarantee accuracy. This is especially true for tender tea buds less than 3cm in length, where the error rate can reach more than 5%. Second, general measuring tools lack a dedicated positioning structure, and the tea buds are prone to rolling or deforming during the measurement process, further affecting the accuracy of the data. Utility Model Content

[0003] To address the above problems, this application provides a handheld tea bud length measuring instrument.

[0004] The handheld tea bud length measuring instrument provided in this application adopts the following technical solution:

[0005] A handheld tea bud length measuring instrument includes: a scale body; a fixed measuring claw installed at one end of the scale body; a sliding measuring component including a slider slidably sleeved on the outer wall of the scale body; a movable measuring claw installed on one side wall of the slider near the fixed measuring claw, symmetrically distributed with the fixed measuring claw; and a locking mechanism installed on the slider for locking the slider position after measurement to prevent it from sliding along the scale body.

[0006] Preferably, the sliding measuring assembly further includes a concave frame, which is installed on the other end of the side wall of the slider near the fixed measuring claw, with its opening facing away from the moving measuring claw.

[0007] Rollers are mounted at the open end of the concave frame via a round rod;

[0008] The outer wall of the roller is in contact with the side of the ruler body.

[0009] Preferably, it also includes a convex opening, which is opened through the top surface of the scale body and extends along the length direction of the scale body;

[0010] A scale is engraved along the length of the convex opening on the top surface of the scale body near the edge of the moving measuring claw;

[0011] The measuring range of the scale is consistent with the length of the convex opening.

[0012] Preferably, the locking mechanism includes a shaft that passes vertically through the center of the top surface of the slider;

[0013] A rotating plate is fitted onto the upward-extending portion at the top of the shaft.

[0014] The clamping plate is fixedly sleeved on the part of the shaft that extends downward to the bottom of the convex opening.

[0015] The two ends of the card plate are designed with rounded transitions, and their length is consistent with the length of the bottom end of the convex opening, ensuring that the card plate can rotate within the bottom of the convex opening.

[0016] Preferably, the locking mechanism further includes toothed plates, two of which are symmetrically installed on the two side walls of the convex opening. When the locking plate is rotated to the horizontal position, the two toothed plates are located on the top surface of the locking plate, realizing a fixed connection between the slider and the scale body. When the locking plate is rotated to the vertical position, the locking plate separates from the toothed plates, and the slider can move freely.

[0017] Preferably, it also includes a gear, disposed between the two gear plates, and sleeved on the outer wall of the shaft via a bearing;

[0018] The gear meshes with two toothed plates.

[0019] Preferably, it also includes a collar, which is sleeved on the outer wall of the shaft and located on the bottom surface of the rotating plate;

[0020] A three-quarter arc-shaped groove is formed on the top surface of the collar;

[0021] A three-quarters arc-shaped rotating plate is set inside the three-quarters arc-shaped groove, with its top surface connected to the bottom surface of the rotating plate.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] 1. The symmetrically set measuring claws achieve precise positioning of tea buds, preventing them from rolling or deforming; the meshing structure of gears and toothed plates ensures smooth and unbiased movement of the slider; combined with a scale with a 0.1mm graduation, the measurement error can be controlled within 0.2mm, which is far superior to the measurement accuracy of traditional tools.

[0024] 2. The handheld design is suitable for on-site operation in tea gardens. A single measurement can be completed in just three steps: pushing the slider, rotating to lock, and taking the reading. The time taken is less than 5 seconds, which is more than 3 times more efficient than traditional ruler measurement. The combination of the three-quarter arc groove and the arc rotating plate limits the rotation angle, avoids misoperation, and reduces the learning cost. Attached Figure Description

[0025] Figure 1 This is a structural front view of an embodiment of the application;

[0026] Figure 2 This is a schematic diagram of the structure of the sliding measurement component according to an embodiment of the application;

[0027] Figure 3 This is a schematic diagram of the locking mechanism in the embodiment of the application.

[0028] Explanation of reference numerals in the attached diagram: 1. Scale body; 2. Convex opening; 3. Scale; 4. Slider; 5. Rotating plate; 6. Moving measuring jaw; 7. Fixed measuring jaw; 8. Concave frame; 9. Roller; 10. Toothed plate; 11. Gear; 12. Shaft; 13. Three-quarter arc rotating plate; 14. Clamping plate; 15. Three-quarter arc groove. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0030] This application discloses a handheld tea bud length measuring instrument, referring to... Figures 1-2 The system includes a ruler body 1, which serves as a measurement reference carrier. It is made of lightweight and wear-resistant plastic or aluminum alloy and its length is adapted to the common tea bud measurement range. The surface is smooth to ensure smooth movement of the sliding parts. The fixed measuring claw 7 is integrally formed or fixed to one end of the ruler body 1 by screws. The inner side is a contact surface adapted to the root of the tea bud to avoid pressing the tea bud during measurement.

[0031] The sliding measuring component includes a slider 4, which is a rectangular block structure with a rectangular through hole in its center that fits the outer wall of the scale body 1. The slider 4 is slidably fitted onto the outer wall of the scale body 1 and can move back and forth along the length of the scale body 1. The movable measuring claw 6 is fixedly installed on one side wall of the slider 4 near the fixed measuring claw 7 by welding or bolting. It is symmetrically distributed with the fixed measuring claw 7 and its structure is consistent with that of the fixed measuring claw 7, ensuring that the force at both ends is uniform and the fit is accurate during measurement.

[0032] The sliding measuring assembly also includes a concave frame 8, made of metal, which is bolted to the other end of the side wall of the slider 4 near the fixed measuring claw 7. Its opening is set away from the moving measuring claw 6. The roller 9 is a cylindrical structure made of rubber, which is rotatably set at the opening end of the concave frame 8 by a metal rod. The outer wall of the roller 9 is in contact with the top surface of the scale body 1, which can reduce the friction when the slider 4 moves, making the sliding smoother, and at the same time avoid the slider 4 from directly rubbing against the scale body 1 and causing wear.

[0033] Reference Figures 1-3 The locking mechanism is installed on the slider 4 and is used to lock the position of the slider 4 after the measurement is completed to prevent it from sliding along the scale body 1 and to ensure that the measurement value is stable and readable.

[0034] It also includes a convex opening 2, which is opened through the top surface of the scale body 1 and extends along the length of the scale body 1. Its cross-section is convex (the width of the upper opening is smaller than the width of the lower opening), which is used to cooperate with the locking mechanism to achieve positioning and locking. The scale 3 is engraved along the length of the convex opening 2 on the top surface of the scale body 1 near the edge of the moving measuring claw 6. The measuring range of the scale 3 is consistent with the length of the convex opening 2, and the graduation value is preferably 0.1mm to ensure measurement accuracy. The surface of the scale 3 is laser engraved and coated with wear-resistant ink to prevent the scale from becoming blurred after long-term use.

[0035] The locking mechanism also includes a shaft 12, which is a cylindrical metal structure, vertically inserted into the center of the top surface of the slider 4 (the top surface of the slider 4 has a through hole adapted to the shaft 12). The shaft 12 can rotate around its own axis. The rotating plate 5 is a circular plastic plate, fixedly sleeved on the top upward extension of the shaft 12. The diameter of the rotating plate 5 is larger than the diameter of the shaft 12, making it easy for the operator to rotate it with their fingers, thus achieving synchronous rotation of the shaft 12. The clamping plate 14 is a rectangular metal plate, fixedly sleeved on the bottom of the shaft 12, extending downward to the bottom of the convex opening 2. The two ends of the clamping plate 14 adopt an arc transition design (to avoid scratching the inner wall of the convex opening 2), and its length is the same as the length of the bottom end of the convex opening 2. The toothed plate 10 is a strip-shaped metal plate with evenly distributed serrations on its surface. There are two toothed plates 10, which are symmetrically fixed to the two side walls of the convex opening 2 (located in the wider area of ​​the lower part of the convex opening 2) by screws. When the card plate 14 is rotated to the horizontal position, the two toothed plates 10 are located on the top surface of the card plate 14, and the top surface of the card plate 14 is in contact with the bottom surface of the toothed plate 10, thereby restricting the movement of the slider 4 along the scale body 1 and realizing the fixed connection between the slider 4 and the scale body 1. When the card plate 14 is rotated to the vertical position, the card plate 14 is separated from the toothed plate 10, and the slider 4 can move freely.

[0036] The locking mechanism also includes a gear 11, which is a spur gear made of metal. It is set between two toothed plates 10 and is rotatably mounted on the outer wall of the shaft 12 via a bearing (the inner ring of the bearing is fixed to the shaft 12, and the outer ring is fixed to the inner ring of the gear 11). The gear 11 meshes with the two toothed plates 10. When the slider 4 moves along the scale body 1, it simultaneously drives the shaft 12 and the gear 11 on it to move along the convex opening 2. While the gear 11 is moving, it can roll along the toothed plate 10 to ensure that the slider 4 slides smoothly without jamming.

[0037] Reference Figure 3It also includes a collar, which is a circular metal ring fitted onto the outer wall of the shaft 12 and located on the bottom surface of the rotating plate 5 (the collar is fixed to the top surface of the slider 4 and does not rotate with the shaft 12). A three-quarter arc-shaped groove 15 is formed on the top surface of the collar, its center coinciding with the axis of the shaft 12, and its arc length corresponding to a 90° central angle (i.e., three-quarters of the circumference), used to limit the rotation angle of the rotating plate 5. A three-quarter arc-shaped rotating plate 13 is an arc-shaped metal plate adapted to the three-quarter arc-shaped groove 15, slidably positioned in the three-quarter arc. Inside the arc-shaped groove 15, its top surface is fixedly connected to the bottom surface of the rotating plate 5. When the rotating plate 5 is rotated, the three-quarter arc-shaped rotating plate 13 slides along the three-quarter arc-shaped groove 15. Since the arc-shaped groove is only three-quarters of the circumference, the rotation angle of the rotating plate 5 is limited to 90° (that is, the locking plate 14 can only switch between the horizontal and vertical positions). This avoids damage to the locking mechanism caused by excessive rotation of the rotating plate 5 by the operator, while ensuring the convenience of locking and unlocking operations (switching can be completed by rotating 90°).

[0038] The implementation principle of a handheld tea bud length measuring instrument in this application embodiment is as follows: The operator holds the scale body 1 and ensures that the device is in a horizontal state. In the initial state, the rotating plate 5 is rotated until the three-quarter arc-shaped rotating plate 13 abuts against one end of the three-quarter arc-shaped groove 15. At this time, the clamping plate 14 is in a vertical position and is separated from the toothed plate 10. The slider 4 can move freely along the scale body 1. The slider 4 is slid away from the fixed measuring claw 7 to reserve space for placing tea buds.

[0039] Place the root of the tea bud to be measured against the inner side of the fixed measuring claw 7, ensuring that the tea bud is placed along the length of the scale body 1 without bending or shifting. Then slowly push the slider 4 so that the inner side of the moving measuring claw 6 is in contact with the top of the tea bud. During the process, the roller 9 rolls along the side of the scale body 1 and the gear 11 rolls along the toothed plate 10 to ensure that the slider 4 moves smoothly until the moving measuring claw 6 is in close contact with the top of the tea bud (without obvious pressure).

[0040] Rotate the rotating plate 5 ninety degrees until the three-quarter arc-shaped rotating plate 13 abuts against the other end of the three-quarter arc-shaped groove 15. At this time, the clamping plate 14 rotates with the shaft 12 to a horizontal position, and the top surface is in contact with the bottom surface of the toothed plate 10. The slider 4 is locked and cannot move. The operator reads the scale value on the scale 3 that is aligned with the edge of the moving measuring claw 6, which is the length of the tea bud (graduation value 0.1mm, which can be read directly to one decimal place).

[0041] After the measurement is completed, rotate the rotating plate 5 ninety degrees in the opposite direction, and the clamping plate 14 returns to the vertical position and separates from the toothed plate 10. Push the slider 4 to reset, and the next round of tea bud measurement can be carried out.

[0042] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0043] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0044] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hand-held tea leaf length measuring instrument, characterized by, The utility model relates to a kind of sliding ruler, including: Scale body (1); Fixed measuring claw (7) is installed at one end of the scale body (1); Sliding measurement assembly, including slider (4), sliding sleeve is set on the outer wall of the scale body (1); Moving measuring claw (6) is installed at the side wall one end of the slider (4) close to fixed measuring claw (7), and it is symmetrically distributed with fixed measuring claw (7); Locking mechanism is installed on the slider (4), for locking the position of slider (4) after measurement is completed, prevent it from sliding along the scale body (1).

2. A hand-held tea leaf length measuring instrument as claimed in claim 1, wherein: The sliding measurement assembly further includes recessed frame (8), which is installed on the side wall of the slider (4) close to fixed measuring claw (7) at the other end, and the opening direction is set away from the end of moving measuring claw (6); Roller (9) is provided at the opening end of the recessed frame (8) by round bar; The outer wall of the roller (9) is attached to the side of the scale body (1).

3. The hand-held tea leaf length measuring instrument according to claim 1, wherein: It also includes convex mouth (2), which is provided through the top surface of the scale body (1) and extends along the length direction of the scale body (1); Scale (3) is engraved on the edge of the top surface of the scale body (1) close to moving measuring claw (6) along the length direction of the convex mouth (2); The range of the scale (3) is consistent with the length of the convex mouth (2).

4. A hand held tea leaf length measuring instrument as claimed in claim 3 wherein: The locking mechanism includes shaft (12), which is vertically provided through the center of the top surface of the slider (4); Rotating plate (5) is sleeved on the top upward extension section of the shaft (12); Clamp plate (14) is fixedly sleeved on the bottom downward extension section of the shaft (12) to the bottom of the convex mouth (2); The two ends of the clamp plate (14) are provided with circular arc transition, and the length is consistent with the length of the bottom end of the convex mouth (2), so that the clamp plate (14) can rotate in the bottom of the convex mouth (2).

5. A hand held tea leaf length measuring instrument as claimed in claim 4 wherein: The locking mechanism further includes tooth plate (10), which is provided with two and symmetrically installed on the side wall of the convex mouth (2), when the clamp plate (14) rotates to the horizontal position, the two tooth plates (10) are located on the top surface of the clamp plate (14), realizing the fixed connection between the slider (4) and the scale body (1), when the clamp plate (14) rotates to the vertical position, the clamp plate (14) is separated from the tooth plate (10), and the slider (4) can move freely.

6. A hand held tea leaf length measuring instrument as claimed in claim 5 wherein: It also includes gear (11), which is arranged between the two tooth plates (10) and is sleeved on the outer wall of the shaft (12) by bearing; The gear (11) is engaged with the two tooth plates (10).

7. A hand held tea leaf length measuring instrument as claimed in claim 4 wherein: It also includes a sleeve ring, which is sleeved on the outer wall of the shaft (12) and located at the bottom surface of the rotating plate (5); Three-quarter arc-shaped groove (15) is provided on the top surface of the sleeve ring; Three-quarter arc-shaped rotating plate (13) is arranged in the three-quarter arc-shaped groove (15), and the top surface thereof is connected with the bottom surface of the rotating plate (5).

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