Portable measuring scale

Abstract

The utility model relates to the technical field of length measurement, in particular to a portable measuring scale which comprises two plate bodies, a plurality of fixing columns are fixed on the side wall of one plate body, and the plurality of fixing columns are all fixed with the other plate body; the inner gear ring is rotationally arranged on the side walls of the two plate bodies; the first roller is fixedly arranged on the inner gear ring in a sleeving manner; according to the utility model, when a small object needs to be measured or a measurement place is narrow, the shell is rotated, the position of the second roller on the shell is adjusted, and a worker holds the plate bodies and the shell, so that the plate bodies and the shell can be kept fixed, and the measurement accuracy is improved. And when the second roller rotates along the surface of the object, the transmission wheel is driven to rotate through the rotating shaft and the transmission belt, and under the action of the polygonal hole, the prism is matched to drive the connecting shaft to rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of length measurement, in particular to a portable measuring ruler. Background Art

[0002] A measuring ruler is generally used to measure the length of an object. It is a measuring tool. A portable measuring ruler generally comes in the form of a tape measure.

[0003] In the prior art, the measuring range of the tape measure is limited, which is not conducive to long-distance measurement. In addition, some rolling measuring rulers are not conducive to measuring the length of small objects or narrow spaces due to their large roller diameters. Therefore, a portable measuring ruler is needed to solve the above problems at the same time. Utility Model Content

[0004] The purpose of the utility model is to provide a portable measuring ruler to solve the problems raised in the above background technology.

[0005] The technical solution of the utility model is: a portable measuring ruler, comprising:

[0006] Two plates, wherein a plurality of fixing columns are fixed to the side wall of one of the plates, and the plurality of fixing columns are fixed to the other plate;

[0007] An inner gear ring, the inner gear ring being rotatably arranged on the two side walls of the plate body;

[0008] A first roller, wherein the first roller is fixedly sleeved on the inner gear ring;

[0009] A connecting shaft, the connecting shaft being slidably inserted on one of the side walls of the plate body;

[0010] A gear, wherein the gear is fixedly sleeved on the side wall of the connecting shaft, and the gear is matched with the inner gear ring;

[0011] A counting assembly, the counting assembly is fixed to one of the fixing columns, and the counting assembly is used to measure the number of rotations of the connecting shaft;

[0012] A measuring component is used to measure length.

[0013] Preferably, the counting component comprises:

[0014] Reflective tape, the reflective tape is fixed on the side wall of the connecting shaft;

[0015] A photoelectric counting sensor is fixed to one of the fixing columns, and the reflective sticker is adapted to the photoelectric counting sensor.

[0016] Preferably, the measuring component comprises:

[0017] A shell, wherein a circular hole is formed on a side wall of the shell;

[0018] A bearing, wherein the outer ring of the bearing is fixed in the circular hole, and the inner ring of the bearing is fixed to the plate body;

[0019] A transmission wheel, the transmission wheel is rotatably arranged on the inner side wall of the housing, and the side wall of the transmission wheel is provided with a polygonal hole;

[0020] A rotating shaft, the rotating shaft being rotatably disposed on the inner side wall of the shell;

[0021] A second roller, one side of the second roller rotates with the inner wall of the housing, and the other side of the second roller is fixed to the rotating shaft;

[0022] A transmission belt is sleeved on the rotating shaft and the side wall of the transmission wheel.

[0023] Preferably, it also includes:

[0024] A prism, wherein the prism is fixed on the top of the connecting shaft, and the prism and the polygonal hole are adapted;

[0025] A button is rotatably arranged on the side wall of the gear, and the button penetrates the side wall of the plate body.

[0026] Preferably, it also includes:

[0027] A connecting plate, the connecting plate is rotatably sleeved on the connecting shaft, and a pressure sensor is fixed on the top of the connecting plate;

[0028] A spring, one end of which is fixed to the pressure sensor, and the other end of which is fixed to the plate.

[0029] Preferably, it also includes:

[0030] A controller, wherein the controller is electrically connected to the photoelectric counting sensor and the pressure sensor;

[0031] The display screen is fixed on the side wall of the plate body, and the controller is electrically connected to the display screen.

[0032] The utility model provides a portable measuring ruler through improvement, which has the following improvements and advantages compared with the prior art:

[0033] The utility model can release the button or ensure that the button is not squeezed when a long distance measurement is required or the object is large. At this time, under the action of the spring, the gear can be in meshing state with the inner gear ring, and then the first roller is pressed against the surface of the object. At this time, the staff holds the plate body and pushes the plate body to move along the surface of the object, and the connecting shaft is driven to rotate through the inner gear ring and the gear.

[0034] When a smaller object needs to be measured, or the measurement location is relatively narrow, the housing is rotated to adjust the position of the second roller on the housing. The staff then holds the plate and the housing so that the plate and the housing can remain fixed, and then the second roller is brought close to the surface of the object. When the second roller rotates along the surface of the object, the transmission wheel is driven to rotate through the rotating shaft and the transmission belt. Under the action of the polygonal hole, the connecting shaft is driven to rotate in cooperation with the prism.

[0035] A technique that counts the number of rotations of a connected shaft by a component to calculate the measured distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0037] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0038] Figure 2 It is a schematic diagram of the plate body and button structure of the utility model;

[0039] Figure 3 It is a schematic diagram of the cross-sectional structure of the plate body of the utility model;

[0040] Figure 4 It is a schematic diagram of the cross-sectional front view of the shell structure of the utility model;

[0041] Figure 5 It is a schematic diagram of the structure of the transmission wheel, rotating shaft and transmission belt of the utility model.

[0042] Description of reference numerals:

[0043] 1. Plate; 2. Shell; 3. Display screen; 4. First roller; 5. Second roller; 6. Button; 7. Fixed column; 8. Photoelectric counting sensor; 9. Internal gear ring; 10. Gear; 11. Connecting shaft; 12. Spring; 13. Connecting plate; 14. Reflective tape; 15. Prism; 16. Transmission belt; 17. Transmission wheel; 18. Rotating shaft; 19. Bearing. DETAILED DESCRIPTION

[0044] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] The utility model provides a portable measuring ruler through improvement. The technical solution of the utility model is:

[0046] like Figure 1-Figure 5As shown, a portable measuring ruler comprises:

[0047] Two plate bodies 1, a plurality of fixing columns 7 are fixed to the side wall of one of the plate bodies 1, and the plurality of fixing columns 7 are all fixed to the other plate body 1;

[0048] An inner gear ring 9, which is rotatably arranged on the side walls of the two plate bodies 1;

[0049] A first roller 4, the first roller 4 is fixedly sleeved on the inner gear ring 9;

[0050] A connecting shaft 11, the connecting shaft 11 is slidably inserted on one of the side walls of the plate body 1;

[0051] Gear 10, which is fixedly sleeved on the side wall of the connecting shaft 11, and the gear 10 is adapted to the inner gear ring 9;

[0052] A counting component, the counting component is fixed to one of the fixing columns 7, and the counting component is used to measure the number of rotations of the connecting shaft 11;

[0053] Measuring assembly, the measuring assembly is used to measure length.

[0054] The first roller 4 rotates to drive the inner gear ring 9 to rotate, and then the gear 10 drives the connecting shaft 11 to rotate. The counting component is used to record the number of rotations of the connecting shaft 11, so as to achieve the length measurement of larger objects or longer distances.

[0055] The measuring components can be used to measure the length of smaller objects.

[0056] Furthermore, the counting component includes:

[0057] Reflective tape 14, the reflective tape 14 is fixed on the side wall of the connecting shaft 11;

[0058] The photoelectric counting sensor 8 is fixed to one of the fixing columns 7 , and the reflective sticker 14 is adapted to the photoelectric counting sensor 8 .

[0059] When the connecting shaft 11 rotates, the reflective tape 14 is driven to rotate, and then cooperates with the photoelectric counting sensor 8 to realize the recording of the number of rotations of the connecting shaft 11 during the rotation process.

[0060] Further, the measuring component comprises:

[0061] Shell 2, a circular hole is formed in the side wall of shell 2;

[0062] Bearing 19, the outer ring of the bearing 19 is fixed in the circular hole, and the inner ring of the bearing 19 is fixed to the plate body 1;

[0063] A transmission wheel 17, the transmission wheel 17 is rotatably disposed on the inner side wall of the housing 2, and a polygonal hole is opened on the side wall of the transmission wheel 17;

[0064] A rotating shaft 18, the rotating shaft 18 is rotatably disposed on the inner wall of the housing 2;

[0065] A second roller 5, one side of the second roller 5 rotates with the inner wall of the housing 2, and the other side of the second roller 5 is fixed to the rotating shaft 18;

[0066] The transmission belt 16 is sleeved on the rotating shaft 18 and the side wall of the transmission wheel 17.

[0067] Furthermore, it also includes:

[0068] A prism 15, wherein the prism 15 is fixed to the top of the connecting shaft 11, and the prism 15 is adapted to the polygonal hole;

[0069] The button 6 is rotatably disposed on the side wall of the gear 10 , and the button 6 penetrates the side wall of the plate body 1 .

[0070] Press the button 6. When the button 6 moves, the gear 10 and the prism 15 are driven to move through the connecting shaft 11, so that the gear 10 can be separated from the inner gear ring 9, and then the prism 15 is sent into the polygonal hole on the transmission wheel 17;

[0071] The second roller 5 is placed close to the surface of the object. When the second roller 5 rotates along the surface of the object, the transmission wheel 17 is driven to rotate through the rotating shaft 18 and the transmission belt 16. Under the action of the polygonal hole, the connecting shaft 11 is driven to rotate in cooperation with the prism 15. Then, the length of the object is calculated through the data such as the reflective tape 14, the photoelectric counting sensor 8, the outer diameter of the second roller 5, and the ratio of the outer diameters of the rotating shaft 18 and the transmission wheel 17.

[0072] Furthermore, it also includes:

[0073] A connecting plate 13, the connecting plate 13 is rotatably sleeved on the connecting shaft 11, and a pressure sensor is fixed on the top of the connecting plate 13;

[0074] The spring 12 has one end fixed to the pressure sensor and the other end fixed to the plate body 1 .

[0075] If the prism 15 does not enter the polygonal hole, the signal strength generated by the pressure sensor being squeezed by the spring 12 is low. Only when the prism 15 completely enters the polygonal hole and the compression of the spring 12 by the connecting plate 13 reaches the maximum value, the length of the object can be measured by the second roller 5, thereby ensuring the accuracy of the data.

[0076] Furthermore, it also includes:

[0077] A controller, the controller is electrically connected to the photoelectric counting sensor 8 and the pressure sensor;

[0078] The display screen 3 is fixed on the side wall of the plate body 1, and the controller and the display screen 3 are electrically connected.

[0079] Specifically, the working principle:

[0080] When in use, if it is necessary to measure a long distance or the object is large, release the button 6 or ensure that the button 6 is not squeezed. At this time, under the action of the spring 12, the gear 10 can be in meshing state with the inner gear ring 9, and then the first roller 4 is pressed against the surface of the object. At this time, the staff holds the plate body 1 and pushes the plate body 1 to move along the surface of the object, thereby driving the first roller 4 to rotate. During the rotation of the first roller 4, the inner gear ring 9 is driven to rotate. The inner gear ring 9 drives the connecting shaft 11 to rotate through the gear 10, thereby driving the reflective sticker 14 to rotate. The number of rotations of the connecting shaft 11 is recorded through the cooperation between the photoelectric counting sensor 8 and the reflective sticker 14. The length of the object is calculated by the controller through the number of rotations, the gear ratio of the inner gear ring 9 and the gear 10, and the outer diameter of the first roller 4, and the data is output through the display screen 3.

[0081] When a smaller object is required or the measurement location is relatively narrow, the housing 2 is rotated to adjust the position of the second roller 5 on the housing 2, and then the button 6 is pressed. When the button 6 moves, the gear 10 and the prism 15 are driven to move through the connecting shaft 11, so that the gear 10 can be separated from the inner gear ring 9, and then the prism 15 is sent into the polygonal hole on the transmission wheel 17. At this time, the housing 2 is rotated again to adjust the angle of the housing 2 to ensure that the prism 15 enters the polygonal hole. If the prism 15 does not enter the polygonal hole, the signal strength generated by the pressure sensor being squeezed by the spring 12 is low. Only when the prism 15 completely enters the polygonal hole, the compression amount of the spring 12 by the connecting plate 13 reaches The maximum value is obtained. At this time, the length of the object can be measured by the second roller 5 to ensure the accuracy of the data. The staff then holds the plate 1 and the shell 2 so that the plate 1 and the shell 2 can remain fixed, and then puts the second roller 5 close to the surface of the object. When the second roller 5 rotates along the surface of the object, the transmission wheel 17 is driven to rotate through the rotating shaft 18 and the transmission belt 16. Under the action of the polygonal hole, the prism 15 drives the connecting shaft 11 to rotate, and then the reflective tape 14, the photoelectric counting sensor 8, the outer diameter of the second roller 5, the outer diameter ratio of the rotating shaft 18 and the transmission wheel 17 and other data are used to calculate the length of the object, and then the data is displayed on the display screen 3 through the controller.

Claims

1. A portable measuring ruler, characterized in that: include: Two plate bodies (1), wherein a plurality of fixing columns (7) are fixed to the side wall of one of the plate bodies (1), and the plurality of fixing columns (7) are all fixed to the other plate body (1); An inner gear ring (9), the inner gear ring (9) being rotatably arranged on the side walls of the two plate bodies (1); A first roller (4), the first roller (4) being fixedly sleeved on the inner gear ring (9); A connecting shaft (11), wherein the connecting shaft (11) is slidably inserted on one of the side walls of the plate body (1); A gear (10), wherein the gear (10) is fixedly sleeved on a side wall of the connecting shaft (11), and the gear (10) and the inner gear ring (9) are adapted to each other; A counting assembly, the counting assembly being fixed to one of the fixing columns (7), the counting assembly being used to measure the number of rotations of the connecting shaft (11); A measuring component is used to measure length.

2. A portable measuring ruler according to claim 1, characterized in that: The counting component comprises: A reflective tape (14), wherein the reflective tape (14) is fixed on a side wall of the connecting shaft (11); A photoelectric counting sensor (8), wherein the photoelectric counting sensor (8) is fixed to one of the fixing columns (7), and the reflective sticker (14) is adapted to the photoelectric counting sensor (8).

3. A portable measuring ruler according to claim 2, characterized in that: The measuring assembly comprises: A shell (2), wherein a circular hole is formed on a side wall of the shell (2); A bearing (19), wherein the outer ring of the bearing (19) is fixed in the circular hole, and the inner ring of the bearing (19) is fixed to the plate body (1); A transmission wheel (17), the transmission wheel (17) being rotatably disposed on the inner side wall of the housing (2), and the side wall of the transmission wheel (17) being provided with a polygonal hole; A rotating shaft (18), the rotating shaft (18) being rotatably disposed on the inner side wall of the housing (2); A second roller (5), one side of the second roller (5) rotates with the inner wall of the housing (2), and the other side of the second roller (5) is fixed to the rotating shaft (18); A transmission belt (16) is sleeved on the rotating shaft (18) and the side wall of the transmission wheel (17).

4. A portable measuring ruler according to claim 3, characterized in that: Also includes: A prism (15), wherein the prism (15) is fixed on the top of the connecting shaft (11), and the prism (15) and the polygonal hole are adapted to each other; A button (6) is rotatably arranged on the side wall of the gear (10), and the button (6) penetrates the side wall of the plate body (1).

5. A portable measuring ruler according to claim 4, characterized in that: Also includes: A connecting plate (13), the connecting plate (13) being rotatably sleeved on the connecting shaft (11), and a pressure sensor being fixed on the top of the connecting plate (13); A spring (12), one end of the spring (12) is fixed to the pressure sensor, and the other end of the spring (12) is fixed to the plate body (1).

6. A portable measuring ruler according to claim 5, characterized in that: Also includes: A controller, the controller being electrically connected to the photoelectric counting sensor (8) and the pressure sensor; A display screen (3), wherein the display screen (3) is fixed on a side wall of the plate body (1), and the controller and the display screen (3) are electrically connected.

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