CN204348230U - A kind of portable four-bar mechanism demonstration teaching aid - Google Patents
A kind of portable four-bar mechanism demonstration teaching aid Download PDFInfo
- Publication number
- CN204348230U CN204348230U CN201420793292.4U CN201420793292U CN204348230U CN 204348230 U CN204348230 U CN 204348230U CN 201420793292 U CN201420793292 U CN 201420793292U CN 204348230 U CN204348230 U CN 204348230U
- Authority
- CN
- China
- Prior art keywords
- bar mechanism
- teaching aid
- portable
- connecting rod
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model belongs to teaching aid field, be specifically related to a kind of portable four-bar mechanism demonstration teaching aid, comprise four connecting rods and linkwork, four described connecting rods hinged formation four-bar mechanism successively, described connecting rod is established by component head and the tail card and is formed by connecting.The conversion of the utility model conveniently between four-bar mechanism, change the changeless straight-bar that connecting rod adopts, but with component splicing mode regulating connecting rod length, change simple and quick, not only deepen the understanding of classmates, also can mobilizing learning initiative, and disassemble, assemble fast, be convenient for carrying, bring great convenience to teaching.
Description
Technical field
The utility model belongs to teaching aid field, is specifically related to a kind of portable four-bar mechanism demonstration teaching aid.
Background technology
Planar linkage mechanism is by plane mechanism hinged for each component; four-bar mechanism is made up of four components; it is the most basic form of plane mechanism; widespread use is obtained in various machinery and instrument; be institution of higher learning's mechanical principle course will content, double-crank mechanism, double rocker mechanism and crank and rocker mechanism can be divided into.In teaching process, understand will be demonstrated by demonstrator for the ease of student, at present, the length of connecting rod of teaching four-bar mechanism is fixed, and is unfavorable for the conversion between four-bar mechanism, and teaching is beyonded one's depth.And teacher, when giving lessons in classroom, need carry many cover four-bar mechanism teaching aids, extremely inconvenience simultaneously.
Utility model content
The utility model, in order to solve the problems of the technologies described above, provides a kind of portable four-bar mechanism demonstration teaching aid, can conveniently change in the middle of teaching, be convenient to the displaying of teacher to double leval jib, be convenient for carrying, and structure simple, be easy to processing and batch production, reduce production cost.For achieving the above object, the utility model have employed following technical scheme: a kind of portable four-bar mechanism demonstration teaching aid, comprise four connecting rods and linkwork, four described connecting rods hinged formation four-bar mechanism successively, described connecting rod is established by component head and the tail card and is formed by connecting.
One end of described component is provided with dovetail type groove, the other end be provided with dovetail type recess and convex body, shape, the size of described component are identical.
Described component is provided with through hole, and the through hole that web member runs through adjacent members successively carries out hinged.
Compared with prior art, the utility model has following beneficial effect:
(1) conversion of the utility model conveniently between four-bar mechanism, change the changeless straight-bar that connecting rod adopts, but by the mode regulating connecting rod length that component splices, change simple and quick, not only deepen the understanding of classmates, also can mobilizing learning initiative;
(2) the utility model structure is simple, adopting ABS material, can produce in batches when putting into production with injection moulding, reduces production cost;
(3) the utility model reasonably designs four-bar mechanism, not only can conveniently change in the middle of teaching, and disassembles, assembles quick, is convenient for carrying, brings great convenience to teaching.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of component;
Fig. 3 is A-A face cut-open view in Fig. 2;
Fig. 4 is the structural representation of interlinking lever end component;
Fig. 5 is the structural representation of interlinking lever end component;
Fig. 6 is the structural representation of web member;
Fig. 7 is a kind of demonstration graph of four bar structures;
In figure: 1-connecting rod, 2-linkwork, 3-component, 4-convex body, 5-dovetail type groove, 6-through hole.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
As shown in Figure 1, 2, a kind of portable four-bar mechanism demonstration teaching aid, comprises four connecting rods 1 and linkwork 2, four described connecting rods hinged formation four-bar mechanism successively, and described connecting rod 1 is established by component 3 head and the tail card and is formed by connecting.One end of described component 3 is provided with dovetail type groove 5, the other end be provided with to match with dovetail type groove 5 and convex body 4, shape, the size of described component 3 are identical.Described component 3 is provided with through hole 6, and the through hole 6 that web member runs through adjacent members successively carries out hinged.
Because connecting rod is made up of size one by one, component 3 that volume profiles is identical, makes connecting rod optionally to increase or to shorten, during use, only the convex body 4 of component 3 need be sticked into from the side the dovetail type groove 5 of another component.Carrying out hinged between the connecting rod 1 of mechanism, is not in same plane between every two connecting rods, makes connecting rod can 360 degree of circular motion and the interference that can not occur between rod member.By the growth of connecting rod 1, shorten and rotate, thus realizing the mutual conversion between four-bar mechanism.
In order to attractive in appearance, the component of interlinking lever end adopts shape as shown in Figure 4,5.
Figure 7 shows that the conversion between the mechanism that employing four-bar mechanism described in the utility model completes.
Above embodiment is not limited only to protection domain of the present utility model, and all amendments of carrying out based on basic thought of the present utility model or variation all belong to protection domain of the present utility model.
Claims (3)
1. a portable four-bar mechanism demonstration teaching aid, comprises four connecting rods and linkwork, and four described connecting rods hinged formation four-bar mechanism successively, is characterized in that: described connecting rod is established by component head and the tail card and is formed by connecting.
2. portable four-bar mechanism demonstration teaching aid according to claim 1, is characterized in that: one end of described component is provided with dovetail type groove, the other end be provided with dovetail type recess and convex body, shape, the size of described component are identical.
3. portable four-bar mechanism demonstration teaching aid according to claim 1 and 2, is characterized in that: described component is provided with through hole, and the through hole that web member runs through adjacent members successively carries out hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420793292.4U CN204348230U (en) | 2014-12-16 | 2014-12-16 | A kind of portable four-bar mechanism demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420793292.4U CN204348230U (en) | 2014-12-16 | 2014-12-16 | A kind of portable four-bar mechanism demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204348230U true CN204348230U (en) | 2015-05-20 |
Family
ID=53231485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420793292.4U Expired - Fee Related CN204348230U (en) | 2014-12-16 | 2014-12-16 | A kind of portable four-bar mechanism demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204348230U (en) |
-
2014
- 2014-12-16 CN CN201420793292.4U patent/CN204348230U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20151216 |
|
| EXPY | Termination of patent right or utility model |