Stepped cutaway view demonstration teaching aid

Abstract

The utility model relates to a step section view demonstration teaching aid. Comprising a first part unit having a first side surface and a second side surface which are vertically connected with each other; the second part unit and the third part unit are oppositely connected, the side face, opposite to the first side face, of the second part unit and the side face, opposite to the first side face, of the third part unit are both connected with the first side face, and the side face, opposite to the second side face, of the third part unit is connected with the second side face; and the connecting piece is arranged on the first side surface and is movably connected with the second part unit, so that after the teaching aid is sectioned along the center of the first through hole, the joint of the third part unit and the first side surface and the central route of the second through hole, the sectioning plane of the second part unit can be moved to be coplanar with the sectioning plane of the first part unit. According to the application, the effect of presenting the characteristics on the mutually parallel sectioning planes on the same plane can be intuitively demonstrated.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of education and teaching technology, and in particular to a step-sectional view demonstration teaching aid. Background Art

[0002] Engineering drawing is a crucial process in engineering technology. It is the discipline that studies the creation and interpretation of engineering drawings. It studies the use of projection techniques (see descriptive geometry) to solve spatial geometry problems and represent spatial objects on a plane.

[0003] In the process of teaching engineering drawing in class, the stepped section view teaching aids commonly used by teachers can only demonstrate where to cut and the model after cutting, but cannot intuitively demonstrate the effect of presenting the features of parallel section surfaces on one surface after cutting.

[0004] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0006] The purpose of the embodiments of the present application is to provide a step cross-sectional view demonstration teaching aid, thereby overcoming one or more problems caused by the limitations and defects of the relevant technology at least to a certain extent.

[0007] A step cross-sectional view demonstration teaching aid provided in an embodiment of the present application includes:

[0008] A first part unit having a first side surface and a second side surface vertically connected to each other;

[0009] The second part unit and the third part unit, the second part unit is connected to the third part unit opposite to the first side surface, the side surface of the second part unit opposite to the first side surface, and the side surface of the third part unit opposite to the first side surface are both connected to the first side surface, and the side surface of the third part unit opposite to the second side surface is connected to the second side surface; wherein,

[0010] A first through hole is provided at the connection between the first part unit and the third part unit;

[0011] A second through hole is provided at the connection between the second part unit and the third part unit;

[0012] A connecting piece is arranged on the first side surface and is movably connected to the second part unit so that after the teaching aid is cut along the center of the first through hole, the connection between the third part unit and the first side surface, and the center line of the second through hole, the cutting plane of the second part unit can be moved to be coplanar with the cutting plane of the first part unit.

[0013] In one embodiment of the present application, the connecting member is a guide rail.

[0014] In one embodiment of the present application, further comprising:

[0015] a first sliding groove, provided on a side surface of the second part unit close to the first side surface;

[0016] The second slide groove is arranged on the side surface of the third part unit close to the first side surface; wherein, the second slide groove is connected with the second slide groove, and the guide rail can move in the first slide groove and the second slide groove.

[0017] In one embodiment of the present application, the sum of the length of the first sliding groove and the length of the second sliding groove is equal to the length of the guide rail.

[0018] In one embodiment of the present application, further comprising:

[0019] The annular body is arranged at the connection between the second part unit and the third part unit, and the inner diameter of the annular body is equal to the aperture of the second through hole.

[0020] In one embodiment of the present application, further comprising:

[0021] The boss is arranged on the side surface of the second part unit and the third part unit away from the first side surface.

[0022] In one embodiment of the present application, the boss includes a first boss segment and a second boss segment that are relatively connected; wherein, the first boss segment is arranged on the side of the second part unit away from the first side, and the second boss segment is arranged on the side of the third part unit away from the first side.

[0023] In one embodiment of the present application, a third through hole is provided on the boss; wherein a center line passing through the center of the third through hole is perpendicular to a center line passing through the center of the second through hole.

[0024] In one embodiment of the present application, the first through hole is a stepped hole.

[0025] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0026] In the embodiment of the present application, the second part unit is movably connected to the connector on the first part unit through the above-mentioned teaching aid, so that when the teaching aid is cut along the center of the first through hole, the connection between the third part unit and the first side surface, and the center of the second through hole, the cross-section of the second part unit can be moved to be coplanar with the cross-section of the first part unit. This application can intuitively demonstrate the effect of presenting features on mutually parallel cross-sections on a single surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a step-sectional view demonstration teaching aid under one viewing angle in an exemplary embodiment of the present application is shown;

[0029] Figure 2 A top view of a step-sectional view demonstration teaching aid in an exemplary embodiment of the present application is shown;

[0030] Figure 3 A schematic diagram of the three-dimensional structure of a step-sectional view demonstration teaching aid in another perspective in an exemplary embodiment of the present application is shown;

[0031] Figure 4 A schematic cross-sectional view of a step cross-sectional view demonstration teaching aid in an exemplary embodiment of the present application is shown;

[0032] Figure 5 A schematic diagram showing the cutaway first part unit, the second part unit, the annular body, and the boss in an exemplary embodiment of the present application;

[0033] Figure 6 A schematic structural diagram of a first part unit in an exemplary embodiment of the present application is shown;

[0034] Figure 7 A schematic diagram showing the second part unit, the annular body and the boss after sectioning in an exemplary embodiment of the present application;

[0035] Figure 8 A schematic diagram showing a cutaway third part unit, an annular body, and a boss in an exemplary embodiment of the present application;

[0036] Figure 9 A schematic diagram showing a connection member provided on a first part unit in an exemplary embodiment of the present application;

[0037] Figure 10 A schematic diagram showing that the cross-section plane of the second part unit and the cross-section plane of the first part unit are coplanar after cross-section in an exemplary embodiment of the present application.

[0038] In the figure: 100, first part unit; 110, first side; 120, second side; 200, second part unit; 210, first slide; 300, third part unit; 310, second slide; 400, first through hole; 500, connecting piece; 600, annular body; 700, boss; 710, first boss; 720, second boss; 730, third through hole. DETAILED DESCRIPTION

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0040] In addition, the accompanying drawings are merely schematic illustrations of embodiments of the present application and are not necessarily drawn to scale. Identical reference numerals in the drawings represent identical or similar parts, and thus repeated descriptions thereof will be omitted. Some of the blocks shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0041] In the related art, when using sectional view demonstration teaching aids for teaching, the existing sectional view demonstration teaching aids can only demonstrate the sectioning and the module after sectioning, but cannot intuitively demonstrate the features on two parallel sectional surfaces presented on one plane.

[0042] In response to the above technical problems, this exemplary embodiment provides a step-section view demonstration teaching aid. Figure 1As shown in , it includes: a first part unit 100, a second part unit 200, a third part unit 300, a first through hole 400, a second through hole and a connector 500. Among them, the first part unit 100 has a first side surface 110 and a second side surface 120 that are perpendicular to each other; the second part unit 200 and the third part unit 300, the second part unit 200 is connected to the third part unit 300 opposite to each other, the side surface of the second part unit 200 opposite to the first side surface 110, and the side surface of the third part unit 300 opposite to the first side surface 110 are both connected to the first side surface 110, and the side surface of the third part unit 300 opposite to the second side surface 120 is connected to the second side surface 120; the first through hole 400, It is arranged at the connection between the first part unit 100 and the third part unit 300; the second through hole is arranged at the connection between the second part unit 200 and the third part unit 300; the connecting piece 500 is arranged on the first side surface 110 and is movably connected to the second part unit 200, so that when the teaching aid is cut along the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center line of the second through hole, the cutting plane of the second part unit 200 can be moved to be coplanar with the cutting plane of the first part unit 100.

[0043] It is understood that the step-section view demonstration teaching aid in the present application includes a first part unit 100, a second part unit 200, a third part unit 300, a first through hole 400, a second through hole, and a connector 500. The first part unit 100 has a first side surface 110 and a second side surface 120 that are perpendicularly connected to each other. The connector 500 is disposed on the first side surface 110 of the first part unit 100 and is movably connected to the second part unit 200. When the teaching aid is cut along the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center of the second through hole, the cross-section of the second part unit 200 can be moved to be coplanar with the cross-section of the first part unit 100. This achieves the goal of presenting the features on the cross-section of the second part unit 200 and the features on the cross-section of the first part unit 100 on the same plane.

[0044] It should be noted that since the second part unit 200 is relatively connected to the third part unit 300, the first through hole 400 is arranged at the connection between the first part unit 100 and the third part unit 300, the second through hole is arranged at the connection between the second part unit 200 and the third part unit 300, and the connecting member 500 is arranged on the first side surface 110 of the first part unit 100. Therefore, when cut along the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center line of the second through hole, the cross-sectional plane of the first part unit 100 is parallel to the cross-sectional plane of the second part unit 200.

[0045] In the embodiment of the present application, the second part unit 200 is movably connected to the connector 500 on the first part unit 100 through the above-mentioned demonstration teaching aid, so that when the teaching aid is cut along the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center of the second through hole, the cross-section of the second part unit 200 can be moved to be coplanar with the cross-section of the first part unit 100. This application can intuitively demonstrate the effect of presenting features on parallel cross-sections on a single surface.

[0046] Below, we will refer to Figures 1 to 10 The various parts of the above-mentioned stepped cross-sectional view demonstration teaching aid in this exemplary embodiment are described in more detail.

[0047] In one embodiment, the connecting member 500 is a guide rail.

[0048] In one embodiment, it further includes:

[0049] A first sliding groove 210 is provided on a side surface of the second part unit 200 close to the first side surface 110;

[0050] The second slide groove 310 is arranged on the side of the third part unit 300 close to the first side surface 110; wherein, the second slide groove 310 is connected with the second slide groove 310, and the guide rail can move in the first slide groove 210 and the second slide groove 310.

[0051] In one embodiment, the sum of the length of the first sliding groove 210 and the length of the second sliding groove 310 is equal to the length of the guide rail.

[0052] It is understandable that in the process of teaching using the step sectional view demonstration teaching aid, it is necessary to use the step sectional view demonstration teaching aid to show students the features on the sectional surface after sectioning. In order to better show the features on the sectional surface after sectioning, the teaching aid is cut along the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center line of the second through hole. Figure 4 A1A2 in the section is cut, such as Figure 5As shown, a cross-sectional surface is formed on the second part unit 200, and a cross-sectional surface is formed on the first part unit 100. The guide rail can move in the second slide groove 220. After cutting, the third part unit is slid away along the guide rail direction. Since the guide rail can move in the first slide groove 210, the cross-sectional surface of the second part unit 200 can be moved to a position coplanar with the cross-sectional surface of the first part unit 100, so as to achieve the effect of presenting the features on the cross-sectional surface of the second part unit 200 and the features on the cross-sectional surface of the first part unit 100 on the same plane, so that students can intuitively observe the projection process of the stepped cross-sectional view, and then let students master the method of drawing the stepped cross-sectional view.

[0053] In order to move the section plane of the second part unit 200 to be coplanar with the section plane of the first part unit 100, as shown in FIG. Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown, in this application, the connecting member 500 is a guide rail, and a first slide groove 210 is provided on the second part unit 200. Before the demonstration teaching aid is cut, in order to make the third part unit 300 and the second part unit 200 better connected to the first part unit 100, a second slide groove 310 is provided on the third part unit 300. The second slide groove 310 is connected to the first slide groove 210, and the guide rail can move within the first slide groove 210 and the second slide groove 310. Therefore, after the teaching aid is cut along the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center line of the second through hole, the guide rail can move within the first slide groove 210, and the first slide groove 210 can move relative to the guide rail, so that the cross-section of the second part unit 200 can be moved to be coplanar with the cross-section of the first part unit 100.

[0054] In one embodiment, it further includes:

[0055] The annular body 600 is provided at the connection between the second component unit 200 and the third component unit 300 . The inner diameter of the annular body 600 is equal to the aperture of the second through hole.

[0056] It is understandable that if Figure 1 and Figure 2As shown, when the present application is cut along the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center line of the second through hole, since the annular body 600 is located at the connection between the second part unit 200 and the third part unit 300, the inner diameter of the annular body 600 is equal to the aperture of the second through hole. Therefore, the annular body 600 is cut at the same time. After cutting, a cross-section of the annular body 600 is formed. When the second part unit 200 after cutting moves relative to the guide rail based on the first chute 210, the cross-section of the annular body 600 moves together with the cross-section of the second part unit 200 to be coplanar with the cross-section of the first part unit 100.

[0057] In one embodiment, it further includes:

[0058] The boss 700 is disposed on the side surfaces of the second component unit 200 and the third component unit 300 away from the first side surface 110 .

[0059] In one embodiment, the boss 700 includes a first boss 710700 segment and a second boss 720700 segment that are relatively connected; wherein the first boss 710700 segment is arranged on the side of the second part unit 200 away from the first side 110, and the second boss 720700 segment is arranged on the side of the third part unit 300 away from the first side 110.

[0060] In one embodiment, a third through hole 730 is provided on the boss 700 , wherein a center line passing through the center of the third through hole 730 is perpendicular to a center line passing through the center of the second through hole.

[0061] It is understandable that when the present application is cut along the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center line of the second through hole, as shown in FIG. Figure 2 and Figure 3 As shown, since the boss 700 is located on the side of the second part unit 200 and the third part unit 300 away from the first side 110, and the boss 700 includes a first boss 710700 section and a second boss 720700 section that are relatively connected, the first boss 710700 section is set on the side of the second part unit 200 away from the first side 110, and the second boss 720700 section is set on the side of the third part unit 300 away from the first side 110. Therefore, the boss 700 is also cut. After cutting, the cross-section of the boss 700 is formed. When the second part unit 200 moves relative to the guide rail based on the first slide groove 210 after cutting, as shown in FIG. Figure 10 As shown, the cross-sectional plane of the boss 700 moves along with the cross-sectional plane of the second component unit 200 to be coplanar with the cross-sectional plane of the first component unit 100 .

[0062] In one embodiment, Figure 3 As shown, the first through hole 400 is a stepped hole.

[0063] It should be noted that the step cross-sectional view in this application refers to the center of the first through hole 400, the connection between the third part unit 300 and the first side surface 110, and the center line of the second through hole. Figure 4 As shown, the section lines A1A2 are not on a straight line, that is, the section lines are in a stepped shape.

[0064] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like in the above description indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise clearly specified.

[0066] In the embodiments of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0067] In the embodiments of the present application, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0068] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0069] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary techniques in the art that are not disclosed in this application.

Claims

1. A step section view demonstration teaching aid, characterized in that: include: A first part unit having a first side surface and a second side surface vertically connected to each other; The second part unit and the third part unit, the second part unit is connected to the third part unit, the side of the second part unit opposite to the first side, and the side of the third part unit opposite to the first side are both connected to the first side, and the side of the third part unit opposite to the second side is connected to the second side; wherein, A first through hole is provided at the connection between the first part unit and the third part unit; A second through hole is provided at the connection between the second part unit and the third part unit; A connecting piece is arranged on the first side surface and is movably connected to the second part unit so that after the teaching aid is cut along the center of the first through hole, the connection between the third part unit and the first side surface, and the center line of the second through hole, the cutting plane of the second part unit can be moved to be coplanar with the cutting plane of the first part unit.

2. The step section view demonstration teaching aid according to claim 1, characterized in that: The connecting piece is a guide rail.

3. The step section view demonstration teaching aid according to claim 2, characterized in that: Also includes: A first slide groove is provided on a side surface of the second part unit close to the first side surface; The second slide groove is arranged on the side of the third part unit close to the first side; wherein the second slide groove is connected with the second slide groove, and the guide rail can move in the first slide groove and the second slide groove.

4. The step section view demonstration teaching aid according to claim 3, characterized in that: The sum of the length of the first sliding groove and the length of the second sliding groove is equal to the length of the guide rail.

5. The step section view demonstration teaching aid according to claim 1, characterized in that: Also includes: The annular body is arranged at the connection between the second part unit and the third part unit, and the inner diameter of the annular body is equal to the aperture of the second through hole.

6. The step section view demonstration teaching aid according to claim 1, characterized in that: Also includes: The boss is arranged on the side surfaces of the second part unit and the third part unit away from the first side surface.

7. The step section view demonstration teaching aid according to claim 6, characterized in that: The boss includes a first boss segment and a second boss segment that are relatively connected; wherein the first boss segment is arranged on a side of the second part unit away from the first side, and the second boss segment is arranged on a side of the third part unit away from the first side.

8. The step section view demonstration teaching aid according to claim 6, characterized in that: A third through hole is disposed on the boss; wherein a center line passing through the center of the third through hole is perpendicular to a center line passing through the center of the second through hole.

9. The step section view demonstration teaching aid according to claim 1, characterized in that: The first through hole is a stepped hole.

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