Rotation cutaway view demonstration teaching aid

Abstract

The utility model relates to a rotation cutaway view demonstration teaching aid. Comprising a disc structure formed by sequentially connecting a first part unit, a second part unit, a third part unit and a fourth part unit. The first through hole is formed in the joint of the first part unit and the fourth part unit; the second through hole is formed in the joint of the third part unit and the fourth part unit; the connecting piece is arranged on the third part unit and detachably connected with the second part unit; when sectioning is conducted along the center of the first through hole, the center of the disc structure and the center of the second through hole, after the second part unit is detached, the connecting piece is movably connected with the first part unit, and the third part unit can rotate till the sectioning plane of the third part unit is coplanar with the sectioning plane of the first part unit. According to the method and the device, the sectioned view can be better displayed.

Description

Technical Field

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

[0002] Engineering drawing is an important process in engineering technology. Engineering drawing is a discipline that studies the drawing and reading of engineering drawings. It studies the use of projection method (see descriptive geometry) to solve spatial geometry problems and express spatial objects on a plane.

[0003] In the process of teaching engineering drawing in class, the rotated section view teaching aids commonly used by teachers can only demonstrate where to cut and the model after cutting, but cannot demonstrate the process of rotating and reprojecting the section surface after cutting, and therefore cannot intuitively show the characteristics of the section surface.

[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 the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

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

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

[0008] It comprises a disc structure composed of a first part unit, a second part unit, a third part unit and a fourth part unit connected in sequence; wherein the second part unit is detachably connected to the first part unit, the first part unit is equal in size to the fourth part unit, and the second part unit is equal in size to the third part unit;

[0009] A first through hole is provided at the connection between the first part unit and the fourth part unit;

[0010] A second through hole is provided at the connection between the third component unit and the fourth component unit;

[0011] A connecting piece, arranged on the third part unit and detachably connected to the second part unit;

[0012] When cutting along the center of the first through hole, the center of the disc structure and the center of the second through hole, after the second part unit is disassembled, the connecting piece is movably connected to the first part unit, so that the third part unit can be rotated until its cutting surface is coplanar with the cutting surface 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, it also includes:

[0015] A first arc-shaped groove is provided in the first part unit;

[0016] The second arc-shaped groove is arranged in the second part unit; wherein the first arc-shaped groove is connected to the second arc-shaped groove, and the guide rail can move in the first arc-shaped groove and the second arc-shaped groove.

[0017] In one embodiment of the present application, it further includes: a center hole, which is arranged at the center of the disc structure.

[0018] In one embodiment of the present application, a first arc boss is arranged on the first part unit at the center hole, a second arc boss is arranged on the second part unit at the center hole, a third arc boss is arranged on the third part unit at the center hole, and a fourth arc boss is arranged on the fourth part unit at the center hole, and the first arc boss, the second arc boss, the third arc boss and the fourth arc boss form a circular boss; wherein the center of the circular boss is collinear with the center of the center hole.

[0019] In one embodiment of the present application, a keyway is provided through the circular boss and the disc structure, the keyway is connected to the center hole, and the center of the keyway is colinear with the center hole and the center of the first through hole.

[0020] In one embodiment of the present application, a fixing piece is provided on the first part unit, and a fixing groove matching the fixing piece is provided on the fourth part unit.

[0021] In one embodiment of the present application, the second through hole is a stepped hole.

[0022] In one embodiment of the present application, the length of the guide rail is less than or equal to the length of the second arc-shaped groove.

[0023] In one embodiment of the present application, the length of the second arc-shaped groove is smaller than the length of the first arc-shaped groove.

[0024] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0025] In the embodiment of the present application, through the above teaching aids, the second part unit is detachably connected to the first part unit and the third part unit, so that when the second part unit is cut along the center of the first through hole, the center of the disc structure and the center of the second through hole, the second part unit can be removed, and after the second part unit is removed, the connector can be movably connected to the first part unit so that the section plane of the first part unit is coplanar with the section plane of the third part unit. The present application can better display the characteristics of the section plane after cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings herein are incorporated into the specification 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 for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a rotating cross-sectional view demonstration teaching aid in an exemplary embodiment of the present application is shown;

[0028] Figure 2 A top view of a rotating cross-sectional view demonstration teaching aid in an exemplary embodiment of the present application is shown;

[0029] Figure 3 A schematic cross-sectional view of a rotating cross-sectional view demonstration teaching aid in an exemplary embodiment of the present application is shown;

[0030] Figure 4 A schematic diagram showing a first part unit, a second part unit and a third part unit in an exemplary embodiment of the present application;

[0031] Figure 5 A schematic diagram showing a first part unit and a first arc boss according to an exemplary embodiment of the present application;

[0032] Figure 6 A schematic diagram showing a second part unit and a second arc boss of an exemplary embodiment of the present application;

[0033] Figure 7 Schematic diagram showing the third part unit and the third arc boss of the exemplary embodiment of the present application

[0034] Figure 8 A schematic diagram showing a fourth part unit and a fourth arc boss of an exemplary embodiment of the present application.

[0035] In the figure, 100, disc structure; 110, first part unit; 111, first arc groove; 120, second part unit; 121, second arc groove; 130, third part unit, 140, fourth part unit; 200, first through hole; 300, third through hole; 400, connecting piece; 500, circular boss; 510, first circular arc boss; 520, second circular arc boss; 530, third circular arc boss; 540, third circular arc boss; 600, keyway; 700, fixing piece; 800, fixing groove; 900, center hole. DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and 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.

[0037] In addition, the accompanying drawings are only schematic illustrations of the embodiments of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and their repeated descriptions will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0038] In the related art, when using rotated sectional view demonstration teaching aids for teaching, the existing rotated sectional view demonstration teaching aids can only demonstrate sectioning, but cannot display the corresponding features on two non-coplanar section surfaces after sectioning on the same plane, that is, the section surface after sectioning cannot be rotated to be coplanar with the projection surface, and therefore the features of the section surface cannot be intuitively displayed.

[0039] In view of the above technical problems, this example implementation provides a rotating cross-sectional view demonstration teaching aid. Figure 1 and Figure 2As shown in , the rotating cross-sectional view demonstration teaching aid may include: a disc structure, a first through hole, a second through hole and a connector. The disc structure is composed of a first part unit, a second part unit, a third part unit and a fourth part unit connected in sequence; the second part unit is detachably connected to the first part unit, the first part unit is equal to the fourth part unit in size, and the second part unit is equal to the third part unit in size; the first through hole is arranged at the connection between the first part unit and the fourth part unit; the second through hole is arranged at the connection between the third part unit and the fourth part unit; the connector is arranged on the third part unit and is detachably connected to the second part unit; when sectioning along the center of the first through hole, the center of the disc structure and the center of the second through hole, after the second part unit is disassembled, the connector is movably connected to the first part unit, so that the third part unit can be rotated until its section plane is coplanar with the section plane of the first part unit.

[0040] It can be understood that the disc structure in the present application is composed of four parts connected in sequence, and the four parts are respectively the first part unit, the second part unit, the third part unit and the fourth part unit. And the second part unit is detachably connected to the first part unit and the third part unit respectively, and when the second through hole is cut along the center of the first through hole, the center of the disc structure and the center of the second through hole, it is convenient to remove the second part unit. And the size of the first part unit is equal to that of the fourth part unit, the size of the second part unit is equal to that of the third part unit, and the size of the first part unit and the second part unit is half the size of the disc structure. In this way, when the second part unit is disassembled and the third part unit is moved to the original position of the second part unit, the end face of the first part unit with the first through hole is coplanar with the end face of the third part unit with the second through hole, that is, the section plane of the third part unit can be coplanar with the section plane of the first part unit. After the section plane of the third part unit is coplanar with the section plane of the first part unit, the present application realizes that the features on the section plane of the third part unit and the features on the section plane of the first part unit are displayed on the same plane. After the features on the section surface of the third part unit and the features on the section surface of the first part unit are displayed on the same plane, projection is performed to facilitate the intuitive demonstration of the requirement that the rotated section view needs to be rotated before projection, thereby making it easier for students to master the drawing process of the rotated section.

[0041] It should be noted that, when the second part unit is disassembled, the connecting piece facilitates the third part unit to be moved to the original position of the second part unit and connected with the first part unit.

[0042] In the embodiment of the present application, through the above teaching aids, the second part unit is detachably connected to the first part unit and the third part unit, so that when the second part unit is cut along the center of the first through hole, the center of the disc structure and the center of the second through hole, the second part unit can be removed, and after the second part unit is removed, the connector can be movably connected to the first part unit so that the section plane of the first part unit is coplanar with the section plane of the third part unit. The present application can better display the characteristics of the section plane after cutting.

[0043] Next, we will refer to Figures 1 to 8 The various parts of the above-mentioned rotating cross-sectional view demonstration teaching aid in this example embodiment are described in more detail.

[0044] In one embodiment, the connecting member is a guide rail.

[0045] In one embodiment, it further includes:

[0046] A first arc-shaped groove is provided in the first component unit;

[0047] The second arc-shaped groove is arranged in the second part unit; wherein the first arc-shaped groove and the second arc-shaped groove are connected, and the guide rail can move in the first arc-shaped groove and the second arc-shaped groove.

[0048] It is understandable that in the teaching process, the teaching aid needs to be cut and the cross-sectional view is shown to the students in order to better show the cut view. Figure 3 As shown, in the present application, the section is made along the center of the first through hole, the center of the disk structure, and the center of the second through hole, that is, along Figure 3 A1A2 in the figure is cut, and then the section plane of the third part unit is rotated to be coplanar with the section plane of the first part unit, so as to better display the sectioned view. After the section plane of the third part unit is rotated to be coplanar with the section plane of the first part unit, projection is performed.

[0049] In order to realize the rotation of the section plane of the third part unit to be coplanar with the section plane of the first part unit, as shown in FIG. Figure 5 , Figure 6 and Figure 7In the present application, the connecting member is a guide rail, and a second arc groove is set in the second part unit, and a first arc groove is set in the first part unit, and the second arc groove is connected to the first arc groove. Since the second part unit is detachably connected to the first part unit and the third part unit, after cutting along the center of the first through hole, the center of the disc structure and the center of the second through hole, the second part unit is removed, and the third part unit is rotated to the original position of the second part unit. Since the first part unit is equal to the fourth part unit in size, and the second part unit is equal to the third part unit in size, the size of the first part unit and the second part unit is half the size of the disc structure. Therefore, when the third part unit is rotated to the original position of the second part unit, the cross-sectional surface of the third part unit is coplanar with the cross-sectional surface of the first part unit.

[0050] In one embodiment, it further includes: a center hole, which is arranged at the center of the disc structure.

[0051] In one embodiment, a first arc boss is arranged on the first part unit at the center hole, a second arc boss is arranged on the second part unit at the center hole, a third arc boss is arranged on the third part unit at the center hole, and a fourth arc boss is arranged on the fourth part unit at the center hole, and the first arc boss, the second arc boss, the third arc boss and the fourth arc boss form a circular boss; wherein the center of the circular boss is collinear with the center of the center hole.

[0052] In one embodiment, a keyway is provided through the circular boss and the disc structure, the keyway is connected to the center hole, and the center of the keyway is colinear with the center hole and the center of the first through hole.

[0053] It is understandable that when the teaching aid is cut, one cutting method is: cutting along the center of the first through hole, the center of the center hole and the center of the second through hole, and after cutting, the first part unit and the third part unit respectively form a cutting surface. Figure 1 , Figure 2 and Figure 3 Since a circular boss is provided on the disc structure, and a keyway is provided through the circular boss and the disc structure, when sectioning along the center of the first through hole, the center of the center hole, and the center of the second through hole, the circular boss and the keyway will also be sectioned accordingly, that is, along Figure 3 A1A2 is cut to form the section plane of the first part unit and the section plane of the third part unit.

[0054] In one embodiment, a fixing piece is disposed on the first part unit, and a fixing groove matching the fixing piece is disposed on the fourth part unit.

[0055] It is understandable that if Figure 4 and Figure 8The fixing piece and the fixing groove match, so that the connection between the first part unit and the fourth part unit is more stable.

[0056] In one embodiment, the second through hole is a stepped hole.

[0057] In one embodiment, the length of the guide rail is less than or equal to the length of the second arc-shaped groove.

[0058] In one embodiment, the length of the second arcuate groove is shorter than the length of the first arcuate groove.

[0059] It can be understood that in order to achieve the coplanarity of the cross-sectional plane of the third part unit and the cross-sectional plane of the first part unit, the length of the guide rail designed in the present application is less than or equal to the length of the second arc groove, and the length of the second arc groove is less than the length of the first arc groove, so as to facilitate the movement of the guide rail in the first arc groove and the second arc groove.

[0060] 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 referred device or element 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.

[0061] 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 technical features indicated. Thus, 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 the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0062] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0065] Those skilled in the art will readily come up with other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application.

Claims

1. A rotating cross-sectional view demonstration teaching aid, characterized in that: include: A disc structure composed of a first part unit, a second part unit, a third part unit and a fourth part unit connected in sequence; wherein the second part unit is detachably connected to the first part unit, the first part unit is equal in size to the fourth part unit, and the second part unit is equal in size to the third part unit; A first through hole is provided at the connection between the first part unit and the fourth part unit; A second through hole is provided at the connection between the third component unit and the fourth component unit; A connecting piece, arranged on the third part unit and detachably connected to the second part unit; When cutting along the center of the first through hole, the center of the disc structure and the center of the second through hole, after the second part unit is disassembled, the connecting piece is movably connected to the first part unit, so that the third part unit can be rotated until its cutting surface is coplanar with the cutting surface of the first part unit.

2. The rotating cross-sectional view demonstration teaching aid according to claim 1, characterized in that: The connecting piece is a guide rail.

3. The rotating cross-sectional view demonstration teaching aid according to claim 2, characterized in that: Also includes: A first arc-shaped groove is provided in the first part unit; The second arc-shaped groove is arranged in the second part unit; wherein the first arc-shaped groove is connected to the second arc-shaped groove, and the guide rail can move in the first arc-shaped groove and the second arc-shaped groove.

4. The rotating cross-sectional view demonstration teaching aid according to claim 1, characterized in that: Also includes: The center hole is arranged at the center of the disc structure.

5. The rotating cross-sectional view demonstration teaching aid according to claim 4, characterized in that: A first arc boss is arranged on the first part unit at the center hole, a second arc boss is arranged on the second part unit at the center hole, a third arc boss is arranged on the third part unit at the center hole, and a fourth arc boss is arranged on the fourth part unit at the center hole, and the first arc boss, the second arc boss, the third arc boss and the fourth arc boss form a circular boss; wherein the center of the circular boss is collinear with the center of the center hole.

6. The rotating cross-sectional view demonstration teaching aid according to claim 5, characterized in that: A keyway is provided through the circular boss and the disc structure, the keyway is communicated with the center hole, and the center of the keyway is colinear with the center hole and the center of the first through hole.

7. The rotating cross-sectional view demonstration teaching aid according to claim 1, characterized in that: The first part unit is provided with a fixing piece, and the fourth part unit is provided with a fixing groove matching the fixing piece.

8. The rotating cross-sectional view demonstration teaching aid according to claim 1, characterized in that: The second through hole is a stepped hole.

9. The rotating cross-sectional view demonstration teaching aid according to claim 3, characterized in that: The length of the guide rail is less than or equal to the length of the second arc-shaped groove.

10. The rotating cross-sectional view demonstration teaching aid according to claim 3, characterized in that: The length of the second arc-shaped groove is smaller than the length of the first arc-shaped groove.

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