Multifunctional horizontal retractable teaching ruler
By integrating a level detector and retractable shrinkage assembly and straight rod on the teaching ruler, the problem that the existing teaching ruler cannot accurately ensure the level of the straight line is solved, and the intuitive display of the angle changes of the triangle is achieved, improving the teaching quality.
Patent Information
- Application Number
- CN202420373389.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing teaching rulers cannot accurately ensure the level of the straight line, affect the quality of teaching, and cannot intuitively display the angle changes and differences of the triangle.
A multifunctional horizontally retractable teaching ruler is designed, using a horizontal detector to ensure the horizontality of the ruler, and through the combination of the shrinking assembly and straight rod, it can show various angle changes in isosceles right angles, obtuse angles and acute triangles.
It realizes accurate control of the horizontality of the straight line, can intuitively display various angle changes of the triangle, and improves the accuracy of teaching and students' understanding effect.
Smart Images
Figure CN222495918U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of teaching tools, and particularly relates to a multifunctional horizontally retractable teaching ruler. Background Art
[0002] Teaching rulers are commonly used teaching tools in the classroom. Currently, most teaching rulers use 45-degree isosceles right-angled triangles and 30-degree right-angled triangles. At present, when teachers draw horizontal straight lines, they rely on their naked eyes to observe the horizontality of the lines, which can easily lead to skewness of the pattern, affecting students' understanding of the pattern, thereby reducing the quality of teaching. In addition, the angles of each side of the teaching ruler are fixed and cannot be stretched and changed, resulting in students being unable to intuitively observe and understand the changes and differences between acute triangles, right triangles, and obtuse triangles, and they are even more unable to intuitively see the contrast between the two triangles. Utility Model Content
[0003] The utility model aims to provide a multifunctional horizontally retractable teaching ruler to solve the problem that the existing teaching ruler cannot accurately ensure the horizontality of a straight line.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a multifunctional horizontally retractable teaching ruler, comprising a ruler body, a horizontal detector being horizontally arranged on the front side of the ruler body; a receiving groove being arranged on the rear side of the ruler body, two groups of retractable components being arranged in the receiving groove, each group of the retractable components comprising n sliders, n≥2, respectively being the first slider...the mth slider...the nth slider, 1<m≤n; one side of the two groups of the first sliders are rotatably connected to the two sides of the receiving groove respectively; the mth slider is slidably connected to the m-1th slider, and the sliding direction is the length direction of the first slider; the drawing sides of the n sliders are flush; the outer end parts of the two groups of the retractable components can contact each other; the length of the mth slider is not greater than the length of the m-1th slider.
[0005] Furthermore, the length of the first sliding block does not exceed half the length of the accommodating groove; n≥3.
[0006] Furthermore, a first magnetic member is provided at the outer end of the sliding block, and the first magnetic members of the two groups of the contraction components can generate an attractive force.
[0007] Furthermore, a horizontal slot is provided on one side of the ruler body, and two groups of sliding rods are slidably connected in the slot, and one end of the two groups of sliding rods are rotatably connected to straight rods; the other ends of the two groups of straight rods are rotatably connected through a rotating shaft.
[0008] Furthermore, two groups of positioning marks or positioning pieces are provided on the ruler body; when the two groups of sliding rods move to the positions of the positioning marks or positioning pieces, the two groups of straight rods are 90 degrees apart.
[0009] Furthermore, the retracting assembly and the straight rod are respectively located on the upper and lower sides of the ruler body.
[0010] Furthermore, the receiving groove is an open structure on the outside and the top, and the bottom of the receiving groove is an arc-shaped structure concave downward.
[0011] Furthermore, the outer side of the arc-shaped structure is inclined outwards.
[0012] Furthermore, a second magnetic component is embedded inside the ruler body, and the second magnetic component can generate attraction between the ruler body and the blackboard, so that the ruler can be attached to the blackboard for demonstration.
[0013] Furthermore, limiting blocks for horizontally supporting and limiting the first sliding block are provided on both sides of the accommodating groove.
[0014] The working principle of the technical solution is that the ruler body can be pressed on the blackboard, and then the level detector can be observed to determine whether the ruler body is placed horizontally. A horizontal straight line can be drawn using the scale on the ruler body.
[0015] The angle and position of the straight rod in the notch can be changed by sliding the slide bar and rotating the straight rod. When the two sets of slide bars are located at the position of the positioning mark or the positioning piece, an isosceles right triangle is formed between the two sets of straight rods and one side of the ruler body. If the two sets of slide bars are located outside the two sets of positioning marks or the positioning piece, the angle formed between the two sets of straight rods is an obtuse angle, and an isosceles obtuse triangle is formed between the two sets of straight rods and one side of the ruler body. If the two sets of slide bars are located inside the two sets of positioning marks or the positioning piece, the angle formed between the two sets of straight rods is an acute angle, and an isosceles acute triangle is formed between the two sets of straight rods and one side of the ruler body.
[0016] The first slider can be rotated and each group of sliders can be slid until the contraction assembly reaches a suitable length, and the outer end portions of the contraction assembly are contacted and attracted together by the first magnetic member. By changing the length and angle of the contraction assembly, a triangle of various angles can be formed.
[0017] The beneficial effects of this technical solution are:
[0018] ① This technical solution can change the angle and position of the ruler body through the horizontal detector, so that a horizontal straight line can be drawn, providing a basis for the accuracy of drawing.
[0019] ② This technical solution can simultaneously draw or intuitively display positive and negative triangles through the retractable components and straight rods arranged on the upper and lower sides of the ruler body.
[0020] ③ This technical solution can position the slide bar by setting a positioning mark or a positioning piece so that the straight bar can form a right angle; when the slide bar is located on the outside of the positioning mark or the positioning piece at the same time, an obtuse angle is formed between the straight bars; when the slide bar is located on the inside of the positioning mark or the positioning piece at the same time, an acute angle is formed between the straight bars; therefore, this technical solution can easily display various angle changes of an isosceles triangle and changes in the length of another side.
[0021] ④ The technical solution is able to change the length of a contraction component by setting it up, and cooperate with the rotation of the first slider to form various forms of triangles between the two sets of contraction components and one side of the ruler body.
[0022] ⑤ This technical solution can form an intuitive contrast by setting straight rods and contraction components, which helps students to grasp the differences between various triangles more vividly.
[0023] ⑥ This technical solution can facilitate the fixation of two groups of contraction components by providing a first magnetic member that attracts each other.
[0024] ⑦ The technical solution can avoid chalk dust accumulation in the receiving groove by setting the receiving groove to have both the upper side and the outer side open. Compared with the structure with only the upper side open, the technical solution can facilitate the discharge of chalk dust. At the same time, an arc structure is provided to facilitate the cleaning of the bottom. Further, the outer side of the arc structure is tilted outward, which is more convenient for the automatic falling of chalk dust and easy to clean.
[0025] ⑧This technical solution can support and limit the sliding block by setting a limit block. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a front view of a multifunctional horizontally retractable teaching ruler of the utility model;
[0027] Figure 2 for Figure 1 Rear view of
[0028] Figure 3 for Figure 1 A top view of the middle shrinkage component portion;
[0029] Figure 4 for Figure 1 A schematic diagram of the structure when the middle slide bar is located at the positioning mark;
[0030] Figure 5 for Figure 1 A schematic diagram of the structure when the middle slide bar is located at the positioning piece;
[0031] Figure 6 for Figure 2 Schematic diagram of the structure when the shrink component is expanded. DETAILED DESCRIPTION
[0032] The following is further described in detail through specific implementation methods:
[0033] The figure marks in the drawings of the specification include: ruler body 1, level detector 2, handle 3, slide bar 4, straight bar 5, notch 6, positioning mark 7, positioning piece 8, retracting assembly 9, limit block 10, accommodating groove 11, arc structure 12, first slide block 13, second slide block 14, and third slide block 15.
[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0035] The embodiment is basically as shown in the attached Figure 1-6 As shown: a multifunctional horizontally retractable teaching ruler, comprising a ruler body 1, as Figure 1 As shown, a handle 3 is provided on the front side of the ruler body 1 to facilitate the taking of the ruler body 1. A level detector 2 (specifically, a level meter) is provided horizontally on the front side of the ruler body 1 to facilitate the detection of whether the ruler body 1 is placed horizontally. A second magnetic member (specifically, a magnet) is embedded inside the ruler body 1. The second magnetic member can generate attraction with the blackboard, so that it is easy to stick it on the blackboard for demonstration. Figure 2As shown, a receiving groove 11 is provided at the rear side of the ruler body 1, and two groups of contraction components 9 are provided in the receiving groove 11. Each group of contraction components 9 includes n sliders, n≥2, which are respectively the first slider...the mth slider...the nth slider, 1<m≤n. More optimized, n≥3 can be made. Since there are certain restrictions when n=2, the shape of a part of the triangle cannot be reflected, such as a triangle with a side length of 3, 4, and 5. In this embodiment, three sliders are specifically selected, namely the first slider 13, the second slider 14, and the third slider 15. The second slider 14 and the third slider 15 can be located at the front side of the first slider 13 or at the rear side. One side of the two groups of the first sliders 13 is rotatably connected to the two sides of the receiving groove 11 respectively. The mth slider is slidably connected to the m-1th slider, and the sliding direction is the length direction of the first slider 13; guide blocks and guide grooves can be set between adjacent sliders to achieve sliding and guiding. The drawing sides of the n sliders are flush (that is, the lower sides of the sliders in the figure are flush). The outer end portions of the two groups of contraction components 9 can contact each other. More optimally, a first magnetic member (specifically, a magnet) can be provided at the outer end of the slider. The first magnetic member of the two groups of contraction components 9 can generate an attractive force, so that the contraction components 9 can be connected to each other, ensuring the stability of the formed triangle. The length of the first slider 13 does not exceed half the length of the receiving slot 11; the length of the mth slider is not greater than the length of the m-1th slider. Limit blocks 10 are provided on both sides of the receiving slot 11 to horizontally support and limit the first slider 13. After the contraction components 9 are fully contracted, the total length is the length of the first slider 13. The two groups of contraction components 9 can be completely located in the receiving slot 11 and can be placed horizontally under the support and limitation of the limit blocks 10.
[0036] like Figure 1 As shown, a horizontal slot 6 is provided on one side of the ruler body 1, and two sets of slide bars 4 are slidably connected in the slot 6. The outer ends of the two sets of slide bars 4 are rotatably connected to straight bars 5; the other ends of the two sets of straight bars 5 are rotatably connected through a rotating shaft. Figure 4 , 5 As shown, two groups of positioning marks 7 or positioning members 8 are provided on the ruler body 1; when the two groups of slide bars 4 move to the positions of the positioning marks 7 or the positioning members 8, the two groups of straight bars 5 are 90 degrees apart. Specifically, the positioning marks 7 can be specifically set as positioning lines, and the positioning members 8 can be specifically used as positioning rods, the upper side of the positioning rods is rotatably connected to the ruler body 1 through a pin shaft, and the lower side can block the slide bars 4, and the slide bars 4 can also lift the positioning rods by moving and pass smoothly.
[0037] The retracting assembly 9 and the straight rod 5 are respectively located at the upper and lower sides of the ruler body 1 , that is, the retracting assembly 9 is located at the rear side of the upper side of the ruler body 1 , and the straight rod 5 is located at the front side of the lower side of the ruler body 1 .
[0038] like Figure 2 ,6 As shown, the receiving groove 11 is an open structure on the outside and the top, which can prevent chalk dust from accumulating in the receiving groove 11. Compared with a structure with only the top open, this technical solution can facilitate the discharge of chalk dust. At the same time, the bottom of the receiving groove 11 is a concave arc structure 12, which is convenient for cleaning the bottom. The outer side of the arc structure 12 is further tilted outward, which is more convenient for the automatic falling of chalk dust and easy cleaning.
[0039] Specifically, scale lines can be set on the sliders, and the specific settings are as follows: the 0 scale line of the first slider is located on the side away from the rotation axis, that is, the end of the free end, and the 0 scale lines of the second slider, the third slider...the nth slider are located on the side that first slides out of the end of the first slider.
[0040] Similarly, scale lines may be provided on the lower sides of the straight rod 5 and the ruler body 1 .
[0041] The specific implementation process is as follows:
[0042] The ruler body 1 can be pressed on the blackboard, and then the level detector 2 can be observed to determine whether the ruler body 1 is placed horizontally. The scale on the ruler body 1 can be used to draw a horizontal straight line.
[0043] The angle of the straight rod 5 and the position of the straight rod 5 in the notch 6 can be changed by sliding the slide rod 4 and rotating the straight rod 5. When the two sets of slide rods 4 are both located at the position of the positioning mark 7 or the positioning member 8, an isosceles right triangle is formed between the two sets of straight rods 5 and one side of the ruler body 1 (such as Figure 4 , 5 If the two sets of slide bars 4 are both located outside the two sets of positioning marks 7 or positioning pieces 8, the angle formed between the two sets of straight bars 5 is an obtuse angle, and an isosceles obtuse triangle is formed between the two sets of straight bars 5 and one side of the ruler body 1. If the two sets of slide bars 4 are both located inside the two sets of positioning marks 7 or positioning pieces, the angle formed between the two sets of straight bars 5 is an acute angle, and an isosceles acute triangle is formed between the two sets of straight bars 5 and one side of the ruler body 1.
[0044] The first slider 13 can be rotated and the sliders can be slid to the contraction assembly 9 to reach a suitable length, and the outer end parts of the contraction assembly 9 can be contacted and attracted together by the first magnetic member. By changing the length and angle of the contraction assembly 9, a triangle with various angles can be formed, such as Figure 6 shown.
[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0046] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.
Claims
1. A multifunctional horizontally retractable teaching ruler, characterized in that: The invention comprises a ruler body (1), wherein a horizontal detector (2) is horizontally arranged on the front side of the ruler body (1); a receiving groove (11) is arranged on the rear side of the ruler body (1), and two groups of contraction components (9) are arranged in the receiving groove (11), and each group of the contraction components (9) comprises n sliders, n≥2, which are respectively a first slider (13) ... an mth slider ... an nth slider, 1<m≤n; one side of the two groups of the first sliders (13) are rotatably connected to the two sides of the receiving groove (11); the mth slider is slidably connected to the m-1th slider, and the sliding direction is the length direction of the first slider (13); the drawing sides of the n sliders are flush; the outer end parts of the two groups of the contraction components (9) can contact each other; the length of the mth slider is not greater than the length of the m-1th slider.
2. The multifunctional horizontally retractable teaching ruler according to claim 1, characterized in that: The length of the first sliding block (13) does not exceed half the length of the accommodating groove (11); n≥3.
3. The multifunctional horizontally retractable teaching ruler according to claim 1, characterized in that: The outer end of the sliding block is provided with a first magnetic member, and the first magnetic members of the two groups of contraction components (9) are capable of generating an attractive force.
4. The multifunctional horizontally retractable teaching ruler according to claim 1, characterized in that: A horizontal notch (6) is provided on one side of the ruler body (1), and two groups of sliding rods (4) are slidably connected in the notch (6), and one end of the two groups of sliding rods (4) is rotatably connected to a straight rod (5); the other ends of the two groups of straight rods (5) are rotatably connected via a rotating shaft.
5. The multifunctional horizontally retractable teaching ruler according to claim 4, characterized in that: The ruler body (1) is provided with two groups of positioning marks (7) or positioning pieces (8); when the two groups of sliding rods (4) move to the positions of the positioning marks (7) or positioning pieces (8), the two groups of straight rods (5) are at 90 degrees to each other.
6. The multifunctional horizontally retractable teaching ruler according to claim 4, characterized in that: The retracting assembly (9) and the straight rod (5) are respectively located on the upper and lower sides of the ruler body (1).
7. The multifunctional horizontally retractable teaching ruler according to claim 6, characterized in that: The receiving groove (11) is a structure with an open outer side and an open upper side, and the bottom of the receiving groove (11) is a downwardly concave arc-shaped structure (12).
8. The multifunctional horizontally retractable teaching ruler according to claim 7, characterized in that: The outer side of the arc-shaped structure (12) is inclined outwards.
9. The multifunctional horizontally retractable teaching ruler according to claim 1, characterized in that: A second magnetic component is embedded inside the ruler body (1), and the second magnetic component can generate attraction between the ruler and the blackboard, so that the ruler can be attached to the blackboard for demonstration.
10. The multifunctional horizontally retractable teaching ruler according to claim 1, characterized in that: Limiting blocks (10) for horizontally supporting and limiting the first sliding block (13) are provided on both sides of the containing groove (11).