Measuring scale for mathematics teaching
By designing push buttons and gear mechanisms in the measurement ruler for mathematics teaching, and using compression springs to achieve rapid limiting of the vernier ruler, the problem of difficulty in tightening the limit screw during one-hand operation in the prior art is solved, and the measurement accuracy and operation are improved Convenience.
Patent Information
- Application Number
- CN202422828452.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-11-20
AI Technical Summary
Existing vernier calipers cannot easily tighten the limit screws when operated with one hand, resulting in reduced measurement accuracy and data deviation.
A measurement ruler for mathematics teaching is designed, using push buttons and gear mechanisms. Through the cooperation of buttons and rubber blocks, the compression springs are used to achieve rapid limiting of the vernier ruler, avoiding the fingers' direct operation of the limit screws.
It realizes convenient limits when operating the vernier ruler with one hand, avoids imaginary positions, and improves measurement accuracy and operation convenience.
Smart Images
Figure CN222279554U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring equipment, in particular to a measuring ruler for mathematics teaching. Background Art
[0002] Vernier caliper is a commonly used measuring tool, mainly used to measure length, inner and outer diameters, depth, etc. It consists of a main scale and a vernier. The main scale usually has millimeter scales, while the vernier can slide on the main scale to provide more accurate measurements.
[0003] Since the vernier caliper can provide accurate length measurement and help students understand the size and proportional relationship of geometric figures, the vernier caliper is often used to cultivate students' hands-on ability and practical operation ability in the process of mathematics teaching. After the vernier of the existing vernier caliper moves on the main scale, when the second outer diameter jaw or the inner diameter jaw is used to measure the object, the finger needs to press the button at the bottom of the vernier, and the limit screw on the vernier needs to be tightened during the partial reading process to fix the vernier. However, this operation method makes it impossible to conveniently operate the limit screw when taking parts with one hand and operating the vernier measurement with one hand. Therefore, the Chinese utility model patent disclosed by the existing publication number CN209131532U: Vernier caliper The application provides a plurality of elastic cards, and the elastic cards can apply a pressure to the force-bearing sheet and the vernier caliper, thereby reducing the possibility of reducing the measurement accuracy due to the gap between the measuring part of the vernier caliper and the object to be measured, and improving the measurement accuracy of the vernier caliper. However, since there is a certain distance between the two elastic cards, when one end of the force-bearing sheet is not placed between the two elastic cards, that is, when the elbow of the elastic card is pushed by the force-bearing sheet to bend to one side, the distance between the two elastic cards will increase, which will cause one end of the force-bearing sheet to fail to cross the corresponding bending part. The elastic card will reset its deformation after bending, causing the elastic card to squeeze and push the force-bearing sheet to one side, thereby failing to cause the vernier to move, thereby causing deviations in the measurement data. Utility Model Content
[0004] The purpose of the utility model is to provide a measuring ruler for mathematics teaching, which can effectively solve the problems in the background technology.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A measuring ruler for mathematics teaching comprises a standard main ruler, a second outer diameter claw is fixedly mounted on one side of the lower end of the standard main ruler, a first inner diameter claw is fixedly mounted on one side of the upper end of the standard main ruler, a vernier ruler is slidably connected to the standard main ruler, a first outer diameter claw is fixedly mounted on one side of the lower end of the vernier ruler, a second inner diameter claw is fixedly mounted on one side of the upper end of the vernier ruler, a slide groove is provided in the vernier ruler, a first mounting groove is provided on one side of the bottom of the slide groove, a push button is arranged in the first mounting groove, the push button comprises a first mounting seat and a second mounting seat, second mounting grooves are respectively provided on opposite sides of the first mounting seat and the second mounting seat, a gear is movably mounted between the two second mounting grooves, a button and a rubber block are also movably mounted between the two second mounting grooves, and the button is located below the gear, and the rubber block is located above the gear.
[0007] As a further preferred solution of the utility model, two limiting grooves are provided on one side of the second installation groove, and a shaft seat is fixedly installed on the second installation groove located between the two limiting grooves;
[0008] Based on this, two limit grooves are opened on the inner side of the second mounting groove, which can realize the vertical radial displacement of the button and the rubber block between the two second mounting grooves respectively, and limit the process of the vertical radial displacement of the button and the rubber block. The setting of the shaft seat can provide conditions for the rotation installation of the gear.
[0009] As a further preferred embodiment of the present invention, two positioning grooves are provided on one side of the first mounting seat, and the first mounting seat located in the positioning groove is provided with a through hole. The second mounting seat is fixedly installed with two positioning rings relative to one side of the first mounting seat, and the second mounting seat located in the positioning ring is also provided with a through hole. The first mounting seat and the second mounting seat are fitted with each other, and the positioning grooves and the positioning rings are interlaced and connected with each other, and the combination of the first mounting seat and the second mounting seat is interlaced and installed in the first mounting groove and fixed by screws.
[0010] As a further preferred solution of the utility model, a rotating shaft is fixedly installed at the center position of the gear, and two sides of the rotating shaft are rotatably installed in corresponding shaft seats respectively.
[0011] As a further preferred embodiment of the present invention, a first top block is fixedly mounted on the button, first limit strips are fixedly mounted on both sides of the button, a second top block is fixedly mounted on the lower end of the rubber block, second limit strips are fixedly mounted on both sides of the rubber block, tooth grooves are respectively provided on opposite sides of the first top block and the second top block, the upper end of the button is inserted between the two second mounting grooves, the first limit strip is inserted in one of the limit strips, and one side of the first top block is meshed with a gear, the rubber block is also inserted between the two second mounting grooves, the second limit strip is also inserted in one of the limit strips, and one side of the second top block is also meshed with a gear, a compression spring is inserted between the first top block and the rubber block, and a compression spring is also inserted between the second top block and the button;
[0012] Based on this, the button and the rubber block are respectively installed between the two second installation grooves, and with the help of gears and compression springs, the upper end of the rubber block can be abutted against the lower end of the standard main scale, thereby quickly limiting the vernier scale.
[0013] As a further preferred embodiment of the present invention, the first mounting seat and the second mounting seat are fitted with each other, the positioning groove and the positioning ring are interlaced and connected with each other, the combination of the first mounting seat and the second mounting seat is interlaced and installed in the first mounting groove, two fixing screws are threadedly connected in the first mounting groove, and the fixing screws also pass through the through holes on one side of the first mounting seat and the second mounting seat, and the upper end surface of the rubber block abuts against the lower end surface of the standard main scale.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] In the utility model, a push button is arranged at the bottom of the vernier scale, and the push button is composed of a first mounting seat, a second mounting seat, a gear, a button, a rubber block, a compression spring and other components, and a first top block and a second top block are respectively installed on the opposite side of the button and the rubber block, so that the rubber block can be separated from the bottom of the standard main scale by pressing the button in cooperation with the gear, thereby facilitating the sliding of the vernier scale, and after releasing the button, the upper end of the rubber block can be abutted against the bottom of the standard main scale in cooperation with the force of the compression spring, thereby quickly limiting the vernier scale, and there is no virtual position. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the main structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the split structure of the vernier ruler of the utility model
[0018] Figure 3 It is a side view of the vernier ruler of the utility model;
[0019] Figure 4 This is a schematic diagram of the push button split structure of the utility model;
[0020] Figure 5 It is a side view of the second mounting seat of the utility model.
[0021] In the figure: 1. standard main ruler; 2. second outer diameter claw; 3. vernier ruler; 4. first outer diameter claw; 5. first inner diameter claw; 6. slide groove; 7. first mounting groove; 8. push button; 9. first mounting seat; 10. second mounting seat; 11. gear; 12. button; 13. rubber block; 14. second mounting groove; 15. limit groove; 16. shaft seat; 17. positioning ring; 18. positioning groove; 19. rotating shaft; 20. first top block; 21. first limit strip; 22. second top block; 23. second limit strip; 24. compression spring; 25. second inner diameter claw. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0023] like Figure 1-Figure 5 As shown, the utility model provides a measuring ruler for mathematics teaching, comprising a standard main ruler 1, a second outer diameter claw 2 is fixedly installed on one side of the lower end of the standard main ruler 1, a first inner diameter claw 5 is fixedly installed on one side of the upper end of the standard main ruler 1, a vernier ruler 3 is slidably connected to the standard main ruler 1, a first outer diameter claw 4 is fixedly installed on one side of the lower end of the vernier ruler 3, a second inner diameter claw 25 is fixedly installed on one side of the upper end of the vernier ruler 3, a slide groove 6 is provided in the vernier ruler 3, a first mounting groove 7 is provided on one side of the bottom of the slide groove 6, a push button 8 is arranged in the first mounting groove 7, the push button 8 comprises a first mounting seat 9 and a second mounting seat 10, second mounting grooves 14 are respectively provided on opposite sides of the first mounting seat 9 and the second mounting seat 10, and a gear 11 is movably installed between the two second mounting grooves 14, and a button 12 and a rubber block 13 are also movably installed between the two second mounting grooves 14, and the button 12 is located below the gear 11, and the rubber block 13 is located above the gear 11.
[0024] like Figure 2-Figure 5As shown, two limiting grooves 15 are provided on one side of the second mounting groove 14, and the second mounting groove 14 between the two limiting grooves 15 is also fixedly installed with an axle seat 16. Two limiting grooves 15 are provided on the inner side of the second mounting groove 14, which can realize the vertical radial displacement of the button 12 and the rubber block 13 between the two second mounting grooves 14 respectively, and limit the process of the vertical radial displacement of the button 12 and the rubber block 13. The setting of the axle seat 16 can provide conditions for the rotation installation of the gear 11. Two positioning grooves 18 are provided on one side of the first mounting seat 9, and the first mounting seat 9 located in the positioning groove 18 is provided with a through hole. The second mounting seat 10 is fixed relative to one side of the first mounting seat 9. Two positioning rings 17 are installed, and the second mounting seat 10 located in the positioning ring 17 is also provided with a through hole, the first mounting seat 9 and the second mounting seat 10 are fitted with each other, the positioning groove 18 and the positioning ring 17 are interlaced and connected with each other, and the combination of the first mounting seat 9 and the second mounting seat 10 is interlaced and installed in the first mounting groove 7 and fixed by screws, a rotating shaft 19 is fixedly installed at the center of the gear 11, and both sides of the rotating shaft 19 are rotatably installed in the corresponding shaft seat 16, a first top block 20 is fixedly installed on the button 12, and first limit strips 21 are fixedly installed on both sides of the button 12, a second top block 22 is fixedly installed at the lower end of the rubber block 13, and both sides of the rubber block 13 are fixedly installed The second limiting strip 23, the first top block 20 and the second top block 22 are respectively provided with tooth grooves on the opposite sides, the upper end of the button 12 is inserted between the two second mounting grooves 14, the first limiting strip 21 is inserted in one of the limiting grooves 15, and one side of the first top block 20 is meshed with the gear 11, the rubber block 13 is also inserted between the two second mounting grooves 14, the second limiting strip 23 is also inserted in one of the limiting grooves 15, and one side of the second top block 22 is also meshed with the gear 11, a compression spring 24 is inserted between the first top block 20 and the rubber block 13, and a compression spring 24 is also inserted between the second top block 22 and the button 12. The button 12 and the rubber block 13 are respectively inserted and installed between the two second mounting grooves 14, and cooperate with the gear 11 and the compression spring 24 to realize that the upper end of the rubber block 13 abuts against the lower end of the standard main scale 1, thereby quickly limiting the vernier scale 3. The first mounting seat 9 and the second mounting seat 10 are fitted with each other, and the positioning groove 18 and the positioning ring 17 are inserted and connected with each other. The combination of the first mounting seat 9 and the second mounting seat 10 is inserted and installed in the first mounting groove 7. Two fixing screws are connected to the inner thread of the first mounting groove 7, and the fixing screws also penetrate the through holes on one side of the first mounting seat 9 and the second mounting seat 10. The upper end surface of the rubber block 13 abuts against the lower end surface of the standard main scale 1.
[0025] It should be noted that the utility model is a measuring ruler for mathematics teaching. When operating the vernier caliper, the standard main ruler 1 can be held in one hand, and the thumb can be pressed against the bottom of the button 12. At the same time, an upward force is applied to the button 12, so that the button 12 drives the first top block 20 to move up between the two second mounting grooves 14, and the first limit strips 21 on both sides of the button 12 move up in the corresponding limit grooves 15 respectively, so that the tooth groove on one side of the first top block 20 is meshed and connected with the gear 11 and the drive gear 11 rotates with the rotating shaft 19 as the axis, so that the gear 11 is meshed and connected with the tooth groove on one side of the second top block 22 at the same time, so that the second top block 22 and the first top block 20 can be moved downward and upward respectively, and then the second top block 22 drives the rubber block 13 between the two The second top block 22 and the first top block 20 are pushed respectively by the compression spring 24 between the first top block 20 and the rubber block 13 and the compression spring 24 between the second top block 22 and the button 12 to make the second top block 22 and the first top block 20 cooperate with the gear 11 to reset and move between the two second mounting grooves 14. Therefore, with the action force of the compression spring 24, the top of the rubber block 13 is abutted against the bottom of the standard main scale 1, and the vernier scale 3 can be quickly limited.
[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A measuring ruler for mathematics teaching, characterized in that: The invention comprises a standard main ruler (1), a second outer diameter clamping claw (2) is fixedly mounted on one side of the lower end of the standard main ruler (1), a first inner diameter clamping claw (5) is fixedly mounted on one side of the upper end of the standard main ruler (1), a vernier ruler (3) is slidably connected to the standard main ruler (1), a first outer diameter clamping claw (4) is fixedly mounted on one side of the lower end of the vernier ruler (3), a second inner diameter clamping claw (25) is fixedly mounted on one side of the upper end of the vernier ruler (3), a slide groove (6) is provided in the vernier ruler (3), a first mounting groove (7) is provided on one side of the bottom of the slide groove (6), and the first mounting groove (7) is provided with a push button (8), the push button (8) comprising a first mounting seat (9) and a second mounting seat (10), a second mounting groove (14) is respectively provided on one side opposite to the first mounting seat (9) and the second mounting seat (10), and a gear (11) is movably mounted between the two second mounting grooves (14), and a button (12) and a rubber block (13) are also movably mounted between the two second mounting grooves (14), and the button (12) is located below the gear (11), and the rubber block (13) is located above the gear (11).
2. A measuring ruler for mathematics teaching according to claim 1, characterized in that: Two limiting grooves (15) are provided on one side of the second installation groove (14), and a shaft seat (16) is fixedly mounted on the second installation groove (14) between the two limiting grooves (15).
3. A measuring ruler for mathematics teaching according to claim 2, characterized in that: Two positioning grooves (18) are provided on one side of the first mounting seat (9), and the first mounting seat (9) located in the positioning grooves (18) is provided with a through hole. The second mounting seat (10) is fixedly mounted with two positioning rings (17) relative to one side of the first mounting seat (9), and the second mounting seat (10) located in the positioning ring (17) is also provided with a through hole.
4. A measuring ruler for mathematics teaching according to claim 3, characterized in that: A rotating shaft (19) is fixedly mounted at the center of the gear (11), and two sides of the rotating shaft (19) are rotatably mounted in corresponding shaft seats (16) respectively.
5. A measuring ruler for mathematics teaching according to claim 1, characterized in that: A first top block (20) is fixedly mounted on the button (12), first limit strips (21) are fixedly mounted on both sides of the button (12), a second top block (22) is fixedly mounted on the lower end of the rubber block (13), second limit strips (23) are fixedly mounted on both sides of the rubber block (13), tooth grooves are respectively provided on opposite sides of the first top block (20) and the second top block (22), the upper end of the button (12) is inserted between the two second mounting grooves (14), and the first limit strip (21) is inserted into one of the limit strips. The first top block (20) is inserted into the groove (15), and one side of the first top block (20) is meshed with the gear (11). The rubber block (13) is also inserted between the two second installation grooves (14). The second limit strip (23) is also inserted into one of the limit grooves (15), and one side of the second top block (22) is also meshed with the gear (11). A compression spring (24) is inserted between the first top block (20) and the rubber block (13), and a compression spring (24) is also inserted between the second top block (22) and the button (12).
6. A measuring ruler for mathematics teaching according to claim 3, characterized in that: The first mounting seat (9) and the second mounting seat (10) are fitted to each other, the positioning groove (18) and the positioning ring (17) are interlaced and connected to each other, the combination of the first mounting seat (9) and the second mounting seat (10) is interlaced and installed in the first mounting groove (7), the first mounting groove (7) is internally threaded with two fixing screws, and the fixing screws also penetrate through holes on one side of the first mounting seat (9) and the second mounting seat (10), and the upper end surface of the rubber block (13) abuts against the lower end surface of the standard main ruler (1).