Teaching aid for mathematics geometry teaching

Abstract

The utility model discloses a teaching aid for mathematics geometry teaching, which comprises a set square body, a sliding chute is arranged on one side of the set square body and is parallel to the edge, a sliding block is clamped at one end of the sliding chute in a sliding manner, a fixed plate is fixedly connected at one end of the sliding block, a clamping block is arranged at the other end of the sliding block, and the fixed plate is fixedly connected with the clamping block. A telescopic rod is fixedly connected between the clamping block and the sliding block, the outer side of the telescopic rod is sleeved with a spring, an opening is formed in the circle center of angle measuring scales of the set square body, a fixing frame is fixedly connected to one side of the set square body, and a screw rod is connected to one end of the fixing frame in a threaded and penetrating mode; and the end part of the outer side of the screw rod is fixedly connected with a second grip. According to the utility model, through the arrangement of the sliding groove, the sliding block, the clamping block, the telescopic rod, the spring, the clamping groove, the open hole, the hollow sleeve, the indicating rod, the through hole, the screw rod and the second grip, length and angle marking can be conveniently carried out, the extension length of the grip can be adjusted, and holding is more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching aids, in particular to a teaching aid for mathematical geometry teaching. Background Art

[0002] In the process of teaching mathematical geometry, teachers often use specific rulers to draw on the blackboard to help students understand geometric figures visually, including the need to measure certain lengths and angles for drawing.

[0003] The Chinese patent with patent publication number CN219487033U discloses a teaching aid for mathematical geometry teaching, including a triangle ruler and a circle drawing component that can be used to draw circles using the two right-angled sides of the triangle ruler in mathematical geometry teaching. The triangle ruler includes a short right-angled side, a long right-angled side and a hypotenuse. The circle drawing component is arranged on the short right-angled side, and the upper end of the long right-angled side is a hand-held part; the circle drawing component includes a support base, a track, a motion component, and a fixed component that can fix the center of the circle. The two ends of the track are connected to the support base, the motion component is arranged on the track, and the fixed component is arranged at the intersection of the two right-angled sides of the triangle ruler, and the fixed point is on the same side as the motion component; compared with the existing technology, the function of the compass is combined with the triangle ruler, and it will not affect the normal use of the triangle ruler. The teaching aid takes into account the functions of the triangle ruler and the compass, and is convenient for teachers to carry in class; the center point of the compass drawing is fixed to the blackboard by suction using a suction cup, avoiding damage to the blackboard caused by using a hard tip fixation.

[0004] Existing teaching aids for mathematical geometry teaching have problems such as the inability to keep the line of sight level with the scale when drawing on the blackboard, which easily leads to deviations in the drawing, and holding the triangle ruler high for a long time to draw will cause arm pain and numbness. In order to overcome these disadvantages, the present invention provides a teaching aid for mathematical geometry teaching. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a teaching aid for mathematical geometry teaching.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a teaching aid for mathematical geometry teaching, including a triangle ruler body, a sliding groove is provided on one side of the triangle ruler body parallel to the edge, one end of the sliding groove is slidably engaged with a slider, the outer side of the triangle ruler body is fixedly connected with a slot parallel to the slide, one end of the slider is fixedly connected to a fixing plate, the other end of the slider is provided with a clamping block, the bottom end of the clamping block is clamped with the clamping groove, a telescopic rod is fixedly connected between the clamping block and the slider, a spring is sleeved on the outer side of the telescopic rod, an opening is provided at the center of the measuring scale circle of the triangle ruler body, a hollow sleeve is rotatably connected to a position corresponding to the opening on one side of the triangle ruler body, a fixing frame is fixedly connected to one side of the fixing frame, a screw is threaded through one end of the fixing frame, and the outer end of the screw is fixedly connected to a second handle.

[0007] Furthermore, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the clamping block.

[0008] Furthermore, the top end of the slider is fixedly connected to a handle, and the top end of the block is fixedly connected to a pull rod.

[0009] Furthermore, a stopper is fixedly connected to the inner end of the screw.

[0010] Furthermore, an indicator rod is fixedly connected to the outer side of the hollow sleeve, and a through hole is formed at one end of the indicator rod.

[0011] Furthermore, a first handle is fixedly connected to one side of the triangle ruler body.

[0012] Beneficial effects of the utility model:

[0013] When used, the teaching aid for mathematics geometry teaching has the following advantages:

[0014] 1. In this scheme, a slide groove, a slider, a fixed plate, a pull handle, a card block, a pull rod, a telescopic rod, a spring, a card groove, an opening, a hollow sleeve, an indicator rod, and a through hole are provided. The card block is pulled outward by the pull rod to separate the card block from the card groove, so that the spring is stretched and the telescopic rod is extended accordingly. At the same time, the slider is moved along the slide groove by the pull handle to move the fixed plate to the corresponding scale. The pull rod is released, so that the spring contracts and resets to drive the card block to clamp the card groove again, thereby fixing the position of the slider to avoid drawing deviation due to the inability to align the line of sight with the scale when drawing on the blackboard. Length marking can be performed to facilitate drawing. When a certain angle needs to be drawn, the center of the drawing circle is aligned with the opening, the indicator rod is rotated to the corresponding angle scale, and the chalk can be passed through the through hole to draw points to mark the angle.

[0015] 2. In this solution, a first handle, a fixing frame, a screw, a second handle, and a block are provided. The screw can be rotated by rotating the second handle, and can be rotated out or into the fixing frame, thereby adjusting the extension length of the second handle. When used in conjunction with the first handle, it is more convenient and flexible to hold the triangle ruler for drawing, and avoids arm numbness caused by holding the triangle ruler for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 : Schematic diagram of the overall structure of the utility model;

[0018] Figure 2 :The utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 : Schematic diagram of the slider structure of the utility model;

[0020] Figure 4 : Another perspective structural diagram of the utility model;

[0021] Figure 5 : Bottom structural schematic diagram of the utility model.

[0022] The reference numerals are as follows:

[0023] 1. Set ruler body; 2. Slide groove; 3. Slider; 4. Fixed plate; 5. Handle; 6. Block; 7. Pull rod; 8. Telescopic rod; 9. Spring; 10. Slot; 11. Opening; 12. Hollow sleeve; 13. Indicator rod; 14. Through hole; 15. First grip; 16. Fixed bracket; 17. Screw; 18. Second grip; 19. Stop block. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-5As shown, it relates to a teaching aid for teaching mathematical geometry, including a triangle ruler body 1, a sliding groove 2 is opened on one side of the triangle ruler body 1 parallel to the edge, a slider 3 is slidably engaged with one end of the sliding groove 2, a clamping groove 10 is fixedly connected to the outer side of the triangle ruler body 1 parallel to the sliding groove 2, one end of the slider 3 is fixedly connected to a fixing plate 4, and the other end of the slider 3 is provided with a clamping block 6, the bottom end of the clamping block 6 is engaged with the clamping groove 10, a telescopic rod 8 is fixedly connected between the clamping block 6 and the slider 3, a spring 9 is sleeved on the outer side of the telescopic rod 8, an opening 11 is opened at the center of the angle measuring scale circle of the triangle ruler body 1, a hollow sleeve 12 is rotatably connected to a position corresponding to the opening 11 on one side of the triangle ruler body 1, a fixing frame 16 is fixedly connected to one side of the fixing frame 16, a screw 17 is threaded through one end of the fixing frame 16, and a second handle 18 is fixedly connected to the outer end of the screw 17.

[0026] like Figure 1-5 As shown, one end of the spring 9 is fixedly connected to the slider 3, and the other end of the spring 9 is fixedly connected to the block 6. The top of the slider 3 is fixedly connected with a pull handle 5, and the top of the block 6 is fixedly connected with a pull rod 7. The block 6 is pulled outward by the pull rod 7 to separate the block 6 from the slot 10, so that the spring 9 is stretched and the telescopic rod 8 is extended accordingly. At the same time, the slider 3 is moved along the slide groove 2 by the pull handle 5, and the fixed plate 4 is moved to the corresponding scale. The pull rod 7 is released, so that the spring 9 contracts and resets, driving the block 6 to clamp the slot 10 again, thereby fixing the position of the slider 3.

[0027] like Figure 1-5 As shown, an indicator rod 13 is fixedly connected to the outside of the hollow sleeve 12, and a through hole 14 is opened at one end of the indicator rod 13. Align the center of the drawing circle with the opening 11, rotate the indicator rod 13 to the corresponding angle scale, and the chalk can be passed through the through hole 14 to draw a point to mark the angle.

[0028] like Figure 1-5 As shown, the inner end of the screw 17 is fixedly connected to a stopper 19, and one side of the triangle ruler body 1 is fixedly connected to the first handle 15. The second handle 18 is rotated to drive the screw 17 to rotate, and it can be rotated out or into the fixed frame 16, thereby adjusting the extension length of the second handle 18 for easy gripping.

[0029] Working principle: When in use, the block 6 is pulled outward by the pull rod 7 to separate the block 6 from the slot 10, so that the spring 9 is stretched and the telescopic rod 8 is extended accordingly. At the same time, the slider 3 is moved along the slide groove 2 by the pull handle 5 to move the fixed plate 4 to the corresponding scale. The pull rod 7 is released, so that the spring 9 contracts and resets to drive the block 6 to clamp the slot 10 again, thereby fixing the position of the slider 3 to avoid drawing deviation due to the inability to align the line of sight with the scale when drawing on the blackboard. Length marking can be performed to facilitate drawing. When a certain angle needs to be drawn, the center of the drawing circle is aligned with the opening 11, and the indicator rod 13 is rotated to the corresponding angle scale. The chalk passes through the through hole 14 to draw a point to mark the angle, and then a straight line is used to connect the center of the drawing circle. By rotating the second handle 18, the screw 17 is driven to rotate and it can be turned out or turned into the fixed frame 16, so as to adjust the extension length of the second handle 18, making it more convenient to hold the triangle ruler for drawing and avoiding arm soreness and numbness caused by holding the triangle ruler for a long time.

[0030] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A teaching aid for teaching mathematics and geometry, comprising a set square body (1), characterized in that: A sliding groove (2) is provided on one side of the triangle ruler body (1) in parallel with the edge, a slider (3) is slidably engaged with one end of the sliding groove (2), a clamping groove (10) is fixedly connected to the outer side of the triangle ruler body (1) in parallel with the sliding groove (2), one end of the slider (3) is fixedly connected to a fixing plate (4), a clamping block (6) is provided on the other end of the slider (3), the bottom end of the clamping block (6) is clamped with the clamping groove (10), and a telescopic rod (8) is fixedly connected between the clamping block (6) and the slider (3). ), a spring (9) is sleeved on the outer side of the telescopic rod (8), an opening (11) is opened at the center of the angle scale circle of the triangle ruler body (1), a hollow sleeve (12) is rotatably connected to a position corresponding to the opening (11) on one side of the triangle ruler body (1), a fixing frame (16) is fixedly connected to one side of the triangle ruler body (1), a screw (17) is threadedly passed through one end of the fixing frame (16), and a second handle (18) is fixedly connected to the outer end of the screw (17).

2. A teaching aid for teaching mathematics geometry according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the slider (3), and the other end of the spring (9) is fixedly connected to the clamping block (6).

3. A teaching aid for mathematical geometry teaching according to claim 1, characterized in that: The top end of the slider (3) is fixedly connected to a handle (5), and the top end of the clamping block (6) is fixedly connected to a pull rod (7).

4. A teaching aid for teaching mathematics geometry according to claim 1, characterized in that: The inner end of the screw rod (17) is fixedly connected with a stopper (19).

5. A teaching aid for teaching mathematics geometry according to claim 1, characterized in that: An indicator rod (13) is fixedly connected to the outer side of the hollow sleeve (12), and a through hole (14) is formed at one end of the indicator rod (13).

6. A teaching aid for teaching mathematics geometry according to claim 1, characterized in that: A first handle (15) is fixedly connected to one side of the triangle ruler body (1).

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