CN210836791U - Fuel injector teaching aid - Google Patents
Fuel injector teaching aid Download PDFInfo
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- CN210836791U CN210836791U CN201920898185.0U CN201920898185U CN210836791U CN 210836791 U CN210836791 U CN 210836791U CN 201920898185 U CN201920898185 U CN 201920898185U CN 210836791 U CN210836791 U CN 210836791U
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Abstract
The utility model provides a fuel injector teaching aid, which comprises a base, a panel, a detection terminal, a connecting component and a fuel injection component, wherein the base is of a thin-wall uncovered box structure and comprises a bottom plate, a front plate, a rear plate and a side plate; the panel is located the base upside, the upper surface from the top down of panel divides into the title district in proper order, the perforation district, the district is placed to the components and parts, the circuit principle district, first schematic diagram has been impressed from left to right on the circuit principle district in proper order, the second schematic diagram, the third schematic diagram, the fourth schematic diagram, the test terminal is inserted in the test hole, coupling assembling includes first connecting piece, the second connecting piece, first connecting piece and second connecting piece are all fixed in on the panel, the oil spout subassembly includes first sprayer, the second sprayer, the third sprayer, the fourth sprayer, the sprayer head end is worn to overlap in the locating hole of second connecting piece, and its tail end is pegged graft on the fixed slot of first connecting piece, the connecting wire of sprayer passes the perforation and is electric connection mutually with the test terminal.
Description
Technical Field
The utility model relates to a teaching field, in particular to sprayer teaching aid are repaiied to vapour.
Background
The oil injector is a precision device with very high processing precision, and is required to have a large dynamic flow range, strong anti-blocking and anti-pollution capacity and good atomization performance. The fuel injector receives the fuel injection pulse signal sent by the ECU and accurately controls the fuel injection quantity. Therefore, the performance of the fuel injector directly influences the working performance of the engine.
With the continuous improvement of the domestic quality of life of people, the quantity of automobile reserves is increased year by year, and the quantity of automobile reserves started in China is up to 3.27 hundred million according to statistics, wherein the quantity of the automobiles is 2.4 hundred million, and is increased by more than 2000 million every year, so that the automobile market is prosperous, and the automobile maintenance and training are very fierce.
At present, most automobile maintenance schools are used for teaching fuel injectors and are divided into classroom teaching and practical teaching according to requirements of teaching outline, teacher systematically explains fuel injectors in classrooms in classroom, practical teaching is in practical teaching rooms, and teacher takes an engine practical teaching platform as a teaching aid to practice teaching. Because no teaching aid is used in the classroom teaching, a teacher can only theoretically explain the oil injector in the classroom teaching, and cannot specifically observe the shape and the structure of the oil injector by students, so that the teacher has poor teaching quality and the students have poor learning effect, and cannot prepare for later practical teaching.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sprayer teaching aid to solve the defect that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a fuel injector teaching aid comprising:
the base is of a thin-wall uncovered box structure and comprises a bottom plate, a front plate, a rear plate and side plates, wherein the bottom plate is rectangular, the front plate is vertically positioned in front of the bottom plate, the height of the front plate is h1, the rear plate is vertically positioned behind the bottom plate, the rear plate is parallel to the front plate, the height of the rear plate is h2, and h2 is greater than h 1;
the number of the side plates is two, the side plates are symmetrically arranged on the left side and the right side of the bottom plate respectively, the side plates are in a right trapezoid shape, the front end and the rear end of each side plate are fixedly connected with the front plate and the rear plate respectively, and the included angle between the upper end surface of each side plate and the horizontal plane is 8-35 degrees;
the panel is positioned on the upper side of the base, the upper surface of the panel is sequentially divided into a title area, a threading hole area, a component placing area and a circuit principle area from top to bottom, and Chinese characters are printed on the title area;
a first threading hole, a second threading hole, a third threading hole and a fourth threading hole are sequentially arranged in the threading hole area from left to right, and the shapes and the sizes of the first threading hole, the second threading hole, the third threading hole and the fourth threading hole are the same;
the component placing area is provided with a fixing hole;
a first schematic diagram, a second schematic diagram, a third schematic diagram and a fourth schematic diagram are sequentially printed on the circuit principle area from left to right, and detection holes are formed in the first schematic diagram, the second schematic diagram, the third schematic diagram and the fourth schematic diagram;
the detection terminals are inserted into the detection holes, and the number of the detection terminals is the same as that of the detection holes;
the connecting assembly comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are fixed on the panel, and the second connecting piece is positioned on the lower side of the first connecting piece;
the first connecting piece is sequentially provided with a first fixing groove, a second fixing groove, a third fixing groove and a fourth fixing groove from left to right, and the first fixing groove, the second fixing groove, the third fixing groove and the fourth fixing groove are identical in shape and size;
the second connecting piece is sequentially provided with a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole from left to right, and the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are identical in shape and size;
the first oil sprayer, the second oil sprayer, the third oil sprayer and the fourth oil sprayer are identical in model size, the head end of the first oil sprayer is sleeved in the first positioning hole, the tail end of the first oil sprayer is inserted in the first fixing groove, and a connecting wire of the first oil sprayer penetrates through the first threading hole to be electrically connected with the detection terminal on the first schematic diagram;
the head end of the second oil injector is sleeved in the second positioning hole in a penetrating mode, the tail end of the second oil injector is inserted into the second fixing groove, and a connecting line of the second oil injector penetrates through the second threading hole to be electrically connected with the detection terminal on the second schematic diagram;
the head end of the third oil sprayer is sleeved in the third positioning hole in a penetrating mode, the tail end of the third oil sprayer is inserted into the third fixing groove in a plugging mode, and a connecting line of the third oil sprayer penetrates through the third threading hole to be electrically connected with the detection terminal on the third schematic diagram;
the head end of the fourth oil sprayer is sleeved in the fourth positioning hole in a penetrating mode, the tail end of the fourth oil sprayer is connected to the fourth fixing groove in an inserting mode, and the connecting line of the fourth oil sprayer penetrates through the fourth threading hole to be electrically connected with the detection terminal on the fourth schematic diagram.
Furthermore, the hole distance between the first threading hole and the second threading hole is equal to the hole distance between the second threading hole and the third threading hole;
the hole distance between the first threading hole and the second threading hole is equal to the hole distance between the third threading hole and the fourth threading hole.
Further, the graph spacing between the first schematic diagram and the second schematic diagram is equal to the graph spacing between the second schematic diagram and the third schematic diagram;
the pattern pitch between the first schematic diagram and the second schematic diagram is equal to the pattern pitch between the third schematic diagram and the fourth schematic diagram.
Furthermore, the cross sections of the first connecting piece and the second connecting piece are L-shaped and are provided with connecting holes, and bolts pass through the connecting holes and the fixing holes and are connected with nuts, so that the first connecting piece or the second connecting piece is fixed on the panel and the component placing area.
Further, a groove pitch between the first fixing groove and the second fixing groove is equal to a groove pitch between the second fixing groove and the third fixing groove;
a groove pitch between the first fixing groove and the second fixing groove is equal to a groove pitch between the third fixing groove and the fourth fixing groove.
Further, the hole pitch between the first positioning hole and the second positioning hole is equal to the hole pitch between the second positioning hole and the third positioning hole;
the hole pitch between the first positioning hole and the second positioning hole is equal to the hole pitch between the third positioning hole and the fourth positioning hole.
Furthermore, the base is made of metal, plastic or wood;
if the base is made of metal, the bottom plate, the front plate, the rear plate and the side plates are formed by stamping, bending and welding sheet metal materials with the thickness of 0.8-1.5 mm;
if the base is made of plastic, the bottom plate, the front plate, the rear plate and the side plates are integrally formed by injection molding through an injection molding machine;
if the bottom plate is made of bakelite, the bottom plate, the front plate, the rear plate and the side plates are assembled and connected through screws.
Further, when the base is made of metal, a protective layer is sprayed on the surface of the base.
Furthermore, the material of the panel is not limited to acrylic, toughened glass, PET, PC, PVC, ABS.
The teaching aid further comprises four foot pads and handles, the four foot pads are symmetrically fixed on the lower end face of the bottom plate, the foot pads are of an inverted frustum-shaped structure, and the height of each foot pad is not less than 10 mm;
the number of the handles is two, and the handles are symmetrically fixed on the outer side surface of the side plate.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a fuel injector teaching aid, which comprises a base, a panel, a detection terminal, a connecting component and a fuel injection component, wherein the base is of a thin-wall uncovered box structure and comprises a bottom plate, a front plate, a rear plate and side plates; the panel is positioned on the upper side of the base, the upper surface of the panel is sequentially divided into a title area, a threading hole area, a component placement area and a circuit principle area from top to bottom, a first principle diagram, a second principle diagram, a third principle diagram and a fourth principle diagram are sequentially printed on the circuit principle area from left to right, the detection terminal is inserted into the detection hole, the connecting assembly comprises a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are fixed on the panel; the oil injection assembly comprises a first oil injector, a second oil injector, a third oil injector and a fourth oil injector, the head end of the oil injector is sleeved in the positioning hole of the second connecting piece in a penetrating mode, the tail end of the oil injector is inserted into the fixing groove of the first connecting piece in a inserting mode, and the connecting line of the oil injector penetrates through the penetrating hole to be electrically connected with the detection terminal. Above structure, this teaching aid passes through first connecting piece and second connecting piece with the sprayer and fixes on the panel for the student also can fully observe shape, the structure of sprayer in the classroom teaching, simultaneously through the study to the circuit schematic diagram on the panel, the student can measure the sprayer through the test terminal with the test instrument, makes the student master the conventional fault detection method of sprayer, thereby has improved mr's teaching quality and student's learning effect, also prepares for the real teaching of instructing at the back.
The utility model provides a sprayer teaching aid, this teaching aid is with the real standard bench separation of sprayer from the engine and make alone to filled the defect that does not have the teaching aid to use in the classroom teaching, this teaching aid has with low costs, small, convenient to carry, easy mass production's advantage simultaneously.
Drawings
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
FIG. 1 is a schematic view of a teaching aid without an imprinted pattern according to a first embodiment;
FIG. 2 is a front view of a panel according to a first embodiment;
FIG. 3 is a schematic view of a base structure according to a first embodiment;
FIG. 4 is a sectional view of a sheet metal material according to the first embodiment;
fig. 5 is a schematic structural diagram of a connecting member according to a first embodiment;
illustration of the drawings: 1-a base; 11-a base plate; 12-a front plate; 13-a back plate; 14-side plates; 15-sheet metal material; 16-a protective layer;
2-a panel; 21-title area; 22-threading hole area; 221-a first threading hole; 222-a second threading aperture; 223-a third threading hole; 224-fourth threading hole;
23-a component placement area; 231-fixing holes;
24-a circuit principle area; 241-first schematic diagram; 242 — second schematic; 243-third principle drawing; 244-fourth schematic; 245-a detection well;
3-a detection terminal;
4-a connecting assembly; 41-a first connector; 411-first fixation slot; 412-a second fixation slot; 413-a third fixation slot; 414-fourth fixation slot;
42-a second connector; 421-a first positioning hole; 422-a second positioning hole; 423-third positioning hole; 424-fourth positioning hole; 43-connecting hole;
5-oil injection assembly; 51-first injector; 52-second fuel injector; 53-third injector; 54-fourth fuel injector;
6-foot pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. In addition, for the convenience of description, the terms "upper", "lower", "left" and "right" are used to refer to the same direction as the upper, lower, left, right, etc. of the drawings, and the terms "first", "second", etc. are used for descriptive distinction and have no special meaning.
To the problem that exists among the prior art, the utility model provides a sprayer teaching aid, this teaching aid includes base, panel, detection terminal, coupling assembling and oil spout subassembly, and the concrete description is as follows:
1-base
The base is of a thin-wall uncovered box structure and comprises a bottom plate, a front plate, a rear plate and side plates, wherein the bottom plate is rectangular, the front plate is vertically positioned in front of the bottom plate, the height of the front plate is h1, the rear plate is vertically positioned behind the bottom plate, the rear plate is parallel to the front plate, the height of the rear plate is h2, and h2 is greater than h 1;
the number of the side plates is two, the side plates are symmetrically arranged on the left side and the right side of the bottom plate respectively, the side plates are in a right trapezoid shape, the front end and the rear end of each side plate are fixedly connected with the front plate and the rear plate respectively, and the included angle between the upper end surface of each side plate and the horizontal plane is 8-35 degrees.
In a specific application scene, the included angle between the upper end face of the side plate and the horizontal plane is 8-35 degrees, so that the panel is inclined, and the oil injection assembly and the circuit schematic diagram can be observed and learned conveniently by a student, therefore, the included angle α can be a value range value of α not more than 8 degrees and not more than 35 degrees, and can also be a value range value of α not more than 8 degrees and not more than 35 degrees, as long as the convenient observation and learning of the student can be ensured, which value can be set according to actual needs for the concrete α, and the change of the angle does not influence the protection range of the application.
Furthermore, the base is made of metal, plastic or wood;
if the base is made of metal, the bottom plate, the front plate, the rear plate and the side plates are formed by stamping, bending and welding sheet metal materials with the thickness of 0.8-1.5 mm;
if the base is made of plastic, the bottom plate, the front plate, the rear plate and the side plates are integrally formed by injection molding through an injection molding machine;
if the bottom plate is made of bakelite, the bottom plate, the front plate, the rear plate and the side plates are assembled and connected through screws.
In a specific application scenario, when the base is made of metal, the cross section of the side plate is in an inverted L shape, more than two base holes are formed in the upper end face of the side plate, and riveting nuts are riveted on the base holes.
When the base is made of plastic, more than two base holes are formed in the inner side face of each side plate, and nuts are embedded in the base holes.
Further, when the base is made of metal, a protective layer is sprayed on the surface of the base.
In a specific application scene, the protective layer protects the surface of the base from atmospheric corrosion, and the color of the protective layer is not limited to gray, black and orange.
The teaching aid further comprises four foot pads and handles, the four foot pads are symmetrically fixed on the lower end face of the bottom plate, the foot pads are of an inverted frustum-shaped structure, and the height of each foot pad is not less than 10 mm;
the number of the handles is two, and the handles are symmetrically fixed on the outer side surface of the side plate.
In a specific application scene, the foot pad has the functions of height increasing, wear resistance, skid resistance, shock absorption and pressure resistance. The foot pad is made of synthetic rubber, and has the characteristics of no toxicity, no smell, no fading, comfortable hand feeling, exquisite appearance and the like, and also has the characteristics of high elasticity, aging resistance, corrosion resistance, high temperature resistance, oil resistance and shock absorption. Be equipped with the stainless steel gasket in the callus on the sole to the structural strength of callus on the sole has been increased.
Wherein, the teacher is convenient to carry by adding the handle.
2-panel
The panel is positioned on the upper side of the base, the upper surface of the panel is sequentially divided into a title area, a threading hole area, a component placing area and a circuit principle area from top to bottom, and Chinese characters are printed on the title area;
a first threading hole, a second threading hole, a third threading hole and a fourth threading hole are sequentially arranged in the threading hole area from left to right, and the shapes and the sizes of the first threading hole, the second threading hole, the third threading hole and the fourth threading hole are the same;
the component placing area is provided with a fixing hole;
the circuit principle area is sequentially printed with a first principle diagram, a second principle diagram, a third principle diagram and a fourth principle diagram from left to right, and detection holes are formed in the first principle diagram, the second principle diagram, the third principle diagram and the fourth principle diagram.
In a specific application scene, the title area and the circuit principle area are printed with patterns or characters on the upper surface of the panel through carving or silk-screen printing and other printing processes, the patterns and the Chinese characters are set in colors according to actual needs, and the color change does not affect the protection range of the application.
The panel is provided with panel holes, the number and the positions of the panel holes are consistent with those of the base holes, and the bolts are in threaded connection with the rivet nuts or the nuts through the panel holes, so that the panel is fixed on the base.
The Chinese characters printed in the title area are consistent with the type and the model of the fuel injector fixed in the component placing area, and the Chinese characters printed in the title area are direct injection type fuel injectors. Meanwhile, the Chinese characters printed and engraved in the title area can be not only the direct injection type fuel injector in the cylinder, but also other Chinese characters capable of representing the type or the model of the fuel injector, as long as students and teachers can be guaranteed to distinguish the fuel injector, no ambiguity and no mistake are generated, the Chinese characters printed and engraved in the specific title area can be set according to actual needs, and the protection range of the application cannot be influenced by the change of the Chinese characters printed and engraved in the title area.
Furthermore, the hole distance between the first threading hole and the second threading hole is equal to the hole distance between the second threading hole and the third threading hole;
the hole distance between the first threading hole and the second threading hole is equal to the hole distance between the third threading hole and the fourth threading hole.
Further, the graph spacing between the first schematic diagram and the second schematic diagram is equal to the graph spacing between the second schematic diagram and the third schematic diagram;
the pattern pitch between the first schematic diagram and the second schematic diagram is equal to the pattern pitch between the third schematic diagram and the fourth schematic diagram.
In a specific application scene, the hole spacing of the threading holes is equal to the pattern spacing of the circuit schematic diagram.
Furthermore, the material of the panel is not limited to acrylic, toughened glass, PET, PC, PVC, ABS.
3-detection terminal
And the detection terminals are inserted into the detection holes, and the number of the detection terminals is the same as that of the detection holes.
In a specific application scene, the detection terminal is set to be the terminal model suitable for the oil sprayer according to the requirement of the oil sprayer, so that specific limitations on the specific model and color of the detection terminal are not made in the application.
4-connecting assembly
The connecting assembly comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are fixed on the panel, and the second connecting piece is positioned on the lower side of the first connecting piece;
the first connecting piece is sequentially provided with a first fixing groove, a second fixing groove, a third fixing groove and a fourth fixing groove from left to right, and the first fixing groove, the second fixing groove, the third fixing groove and the fourth fixing groove are identical in shape and size;
the second connecting piece is sequentially provided with a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole from left to right, and the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole are identical in shape and size.
Furthermore, the cross sections of the first connecting piece and the second connecting piece are L-shaped and are provided with connecting holes, and bolts pass through the connecting holes and the fixing holes and are connected with nuts, so that the first connecting piece or the second connecting piece is fixed on the panel and the component placing area.
Further, a groove pitch between the first fixing groove and the second fixing groove is equal to a groove pitch between the second fixing groove and the third fixing groove;
a groove pitch between the first fixing groove and the second fixing groove is equal to a groove pitch between the third fixing groove and the fourth fixing groove.
Further, the hole pitch between the first positioning hole and the second positioning hole is equal to the hole pitch between the second positioning hole and the third positioning hole;
the hole pitch between the first positioning hole and the second positioning hole is equal to the hole pitch between the third positioning hole and the fourth positioning hole.
In a specific application scenario, the slot pitch of the first connecting piece is equal to the hole pitch of the second connecting piece.
5-oil injection assembly
The first oil sprayer, the second oil sprayer, the third oil sprayer and the fourth oil sprayer are identical in model size, the head end of the first oil sprayer is sleeved in the first positioning hole, the tail end of the first oil sprayer is inserted in the first fixing groove, and a connecting wire of the first oil sprayer penetrates through the first threading hole to be electrically connected with the detection terminal on the first schematic diagram;
the head end of the second oil injector is sleeved in the second positioning hole in a penetrating mode, the tail end of the second oil injector is inserted into the second fixing groove, and a connecting line of the second oil injector penetrates through the second threading hole to be electrically connected with the detection terminal on the second schematic diagram;
the head end of the third oil sprayer is sleeved in the third positioning hole in a penetrating mode, the tail end of the third oil sprayer is inserted into the third fixing groove in a plugging mode, and a connecting line of the third oil sprayer penetrates through the third threading hole to be electrically connected with the detection terminal on the third schematic diagram;
the head end of the fourth oil sprayer is sleeved in the fourth positioning hole in a penetrating mode, the tail end of the fourth oil sprayer is connected to the fourth fixing groove in an inserting mode, and the connecting line of the fourth oil sprayer penetrates through the fourth threading hole to be electrically connected with the detection terminal on the fourth schematic diagram.
In a specific application scenario, due to the fact that the types and the models of the oil injectors are many, students can conveniently observe and learn, the specific types and the models of the first oil injector, the second oil injector, the third oil injector and the fourth oil injector can be selected according to actual needs, and the change of the types and the models of the oil injectors does not affect the protection range of the application.
The utility model provides a sprayer teaching aid, the on-line screen storage device comprises a base, a panel, the test terminal, coupling assembling and oil spout subassembly, this teaching aid is fixed the sprayer on the panel through first connecting piece and second connecting piece, make the student also can be to the shape of sprayer in the classroom teaching, the structure fully observes, simultaneously through the study to circuit schematic diagram on the panel, the student can pass through the test instrument and measure the sprayer through the test terminal, make the student master the conventional fault detection method of sprayer, thereby teacher's teaching quality and student's learning effect have been improved, also make preparation for the real teaching of the following reality.
The utility model provides a sprayer teaching aid, this teaching aid is with the real standard bench separation of sprayer from the engine and make alone to filled the defect that does not have the teaching aid to use in the classroom teaching, this teaching aid has with low costs, small, convenient to carry, easy mass production's advantage simultaneously.
The first embodiment is as follows:
based on above-mentioned design, as shown in fig. 1-5, for the utility model provides a teaching aid structure schematic diagram in the scene specifically uses, this teaching aid includes:
the base 1 is a thin-wall box structure without a cover as shown in fig. 3, and comprises a bottom plate 11, a front plate 12, a rear plate 13 and side plates 14, wherein the bottom plate 11 is rectangular, the front plate 12 is vertically positioned in front of the bottom plate 11, the height of the front plate 12 is h1, the rear plate 13 is vertically positioned behind the bottom plate 11, the rear plate 13 is parallel to the front plate 12, the height of the rear plate 13 is h2, wherein h2 is greater than h 1;
the number of the side plates 14 is two, the side plates are symmetrically positioned at the left side and the right side of the bottom plate 11 respectively, the side plates 14 are in a right trapezoid shape, the front end and the rear end of each side plate 14 are fixedly connected with the front plate 12 and the rear plate 13 respectively, and an included angle between the upper end surface of each side plate 14 and a horizontal plane is 15 degrees;
the panel 2 is positioned on the upper side of the base 1 as shown in fig. 2, the upper surface of the panel 2 is divided into a title area 21, a threading hole area 22, a component placing area 23 and a circuit principle area 24 from top to bottom in sequence, and Chinese characters are printed on the title area 21;
a first threading hole 221, a second threading hole 222, a third threading hole 223 and a fourth threading hole 224 are sequentially arranged in the threading hole area 22 from left to right, and the shapes and the sizes of the first threading hole 221, the second threading hole 222, the third threading hole 223 and the fourth threading hole 224 are the same;
a fixing hole 231 is formed in the component placing area 23;
a first schematic diagram 241, a second schematic diagram 242, a third schematic diagram 243 and a fourth schematic diagram 244 are sequentially printed on the circuit principle area 24 from left to right, and detection holes 245 are formed in the first schematic diagram 241, the second schematic diagram 242, the third schematic diagram 243 and the fourth schematic diagram 244;
the detection terminals 3 are inserted into the detection holes 245 as shown in fig. 1, and the number of the detection terminals 3 is the same as that of the detection holes 245;
the connecting assembly 4, as shown in fig. 5, includes a first connecting member 41 and a second connecting member 42, the first connecting member 41 and the second connecting member 42 are both fixed on the panel 2, and the second connecting member 42 is located at the lower side of the first connecting member 41;
a first fixing groove 411, a second fixing groove 412, a third fixing groove 413 and a fourth fixing groove 414 are sequentially formed in the first connecting piece 41 from left to right, and the shapes and the sizes of the first fixing groove 411, the second fixing groove 412, the third fixing groove 413 and the fourth fixing groove 414 are the same;
the second connecting member 42 is sequentially provided with a first positioning hole 421, a second positioning hole 422, a third positioning hole 423 and a fourth positioning hole 424 from left to right, and the shapes and the sizes of the first positioning hole 421, the second positioning hole 422, the third positioning hole 423 and the fourth positioning hole 424 are the same;
the fuel injection assembly 5, as shown in fig. 1, includes a first fuel injector 51, a second fuel injector 52, a third fuel injector 53, and a fourth fuel injector 54, where the first fuel injector 51, the second fuel injector 52, the third fuel injector 53, and the fourth fuel injector 54 are all the same in model size, a head end of the first fuel injector 51 is inserted into the first positioning hole 421, and a tail end of the first fuel injector is inserted into the first fixing groove 411, and a connection line of the first fuel injector 51 passes through the first threading hole 221 and is electrically connected to the detection terminal 3 on the first schematic diagram 241;
the head end of the second fuel injector 52 is inserted into the second positioning hole 422, and the tail end of the second fuel injector is inserted into the second fixing groove 412, and the connection line of the second fuel injector 52 passes through the second threading hole 222 to be electrically connected with the detection terminal 3 on the second schematic diagram 242;
the head end of the third oil injector 53 is inserted into the third positioning hole 423, and the tail end of the third oil injector is inserted into the third fixing groove 413, and the connection line of the third oil injector 53 passes through the third threading hole 223 and is electrically connected to the detection terminal 3 on the third schematic diagram 243;
the head end of the fourth fuel injector 54 is inserted into the fourth positioning hole 424, and the tail end of the fourth fuel injector is inserted into the fourth fixing groove 414, and the connection line of the fourth fuel injector 54 passes through the fourth threading hole 224 to be electrically connected to the detection terminal 3 on the fourth schematic diagram 244.
Further, as shown in fig. 2, a hole pitch between the first threading hole 221 and the second threading hole 222 is equal to a hole pitch between the second threading hole 222 and the third threading hole 223;
the hole interval between the first threading hole 221 and the second threading hole 222 is equal to the hole interval between the third threading hole 223 and the fourth threading hole 224.
Further, as shown in fig. 2, the graph distance between the first schematic diagram 241 and the second schematic diagram 242 is equal to the graph distance between the second schematic diagram 242 and the third schematic diagram 243;
the pattern pitch between the first schematic diagram 241 and the second schematic diagram 242 is equal to the pattern pitch between the third schematic diagram 243 and the fourth schematic diagram 244.
Further, the cross sections of the first connecting piece 41 and the second connecting piece 42 are both L-shaped and have connecting holes 43, and bolts are connected with nuts through the connecting holes 43 and the fixing holes 231, so that the first connecting piece 41 or the second connecting piece 42 is fixed to the component placement area 23 of the panel 2.
Further, a groove pitch between the first fixing groove 411 and the second fixing groove 412 is equal to a groove pitch between the second fixing groove 412 and the third fixing groove 413;
a groove pitch between the first fixing groove 411 and the second fixing groove 412 is equal to a groove pitch between the third fixing groove 413 and the fourth fixing groove 414.
Further, the hole pitch between the first positioning hole 421 and the second positioning hole 422 is equal to the hole pitch between the second positioning hole 422 and the third positioning hole 423;
the hole pitch between the first positioning hole 421 and the second positioning hole 422 is equal to the hole pitch between the third positioning hole 423 and the fourth positioning hole 424.
Further, the base 1 is made of metal, plastic or wood;
if the base 1 is made of metal, the bottom plate 11, the front plate 12, the rear plate 13 and the side plates 14 are formed by stamping, bending and welding sheet metal materials 15 with the thickness of 1 mm;
if the base 1 is made of plastic, the bottom plate 11, the front plate 12, the rear plate 13 and the side plates 14 are integrally formed by injection molding through an injection molding machine;
if the bottom plate 11 is made of bakelite, the bottom plate 11, the front plate 12, the rear plate 13 and the side plates 14 are assembled and connected through screws.
Further, as shown in fig. 4, when the base 1 is made of metal, a protective layer 16 is sprayed on the surface of the base 1.
Further, the material of the panel 2 is not limited to acryl.
Further, the teaching aid further comprises foot pads 6 and handles (not shown), wherein the number of the foot pads 6 is four, as shown in fig. 1, the foot pads 6 are symmetrically fixed on the lower end face of the bottom plate 11, the foot pads 6 are of an inverted frustum-shaped structure, and the height of the foot pads 6 is not less than 10 mm;
the number of the handles is two, and the handles are symmetrically fixed on the outer side surface of the side plate 14.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. A fuel injector teaching aid, comprising:
the base (1) is of a thin-wall box body structure without a cover and comprises a bottom plate (11), a front plate (12), a rear plate (13) and side plates (14), wherein the bottom plate (11) is rectangular, the front plate (12) is vertically positioned in front of the bottom plate (11), the height of the front plate (12) is h1, the rear plate (13) is vertically positioned behind the bottom plate (11), the rear plate (13) is parallel to the front plate (12), the height of the rear plate (13) is h2, and h2 is more than h 1;
the number of the side plates (14) is two, the side plates are symmetrically positioned on the left side and the right side of the bottom plate (11) respectively, the side plates (14) are in a right trapezoid shape, the front end and the rear end of each side plate (14) are fixedly connected with the front plate (12) and the rear plate (13) respectively, and an included angle between the upper end surface of each side plate (14) and the horizontal plane is 8-35 degrees;
the panel (2) is positioned on the upper side of the base (1), the upper surface of the panel (2) is sequentially divided into a title area (21), a threading hole area (22), a component placing area (23) and a circuit principle area (24) from top to bottom, and Chinese characters are printed on the title area (21);
a first threading hole (221), a second threading hole (222), a third threading hole (223) and a fourth threading hole (224) are sequentially arranged in the threading hole area (22) from left to right, and the shapes and the sizes of the first threading hole (221), the second threading hole (222), the third threading hole (223) and the fourth threading hole (224) are the same;
a fixing hole (231) is formed in the component placing area (23);
a first schematic diagram (241), a second schematic diagram (242), a third schematic diagram (243) and a fourth schematic diagram (244) are sequentially printed on the circuit principle area (24) from left to right, and detection holes (245) are formed in the first schematic diagram (241), the second schematic diagram (242), the third schematic diagram (243) and the fourth schematic diagram (244);
the detection terminals (3) are inserted into the detection holes (245), and the number of the detection terminals (3) is the same as that of the detection holes (245);
the connecting assembly (4) comprises a first connecting piece (41) and a second connecting piece (42), the first connecting piece (41) and the second connecting piece (42) are fixed on the panel (2), and the second connecting piece (42) is positioned on the lower side of the first connecting piece (41);
a first fixing groove (411), a second fixing groove (412), a third fixing groove (413) and a fourth fixing groove (414) are sequentially formed in the first connecting piece (41) from left to right, and the shapes and the sizes of the first fixing groove (411), the second fixing groove (412), the third fixing groove (413) and the fourth fixing groove (414) are the same;
a first positioning hole (421), a second positioning hole (422), a third positioning hole (423) and a fourth positioning hole (424) are sequentially formed in the second connecting piece (42) from left to right, and the shapes and the sizes of the first positioning hole (421), the second positioning hole (422), the third positioning hole (423) and the fourth positioning hole (424) are the same;
the fuel injection assembly (5) comprises a first fuel injector (51), a second fuel injector (52), a third fuel injector (53) and a fourth fuel injector (54), the first fuel injector (51), the second fuel injector (52), the third fuel injector (53) and the fourth fuel injector (54) are identical in model size, the head end of the first fuel injector (51) is sleeved in the first positioning hole (421), the tail end of the first fuel injector is inserted into the first fixing groove (411), and a connecting line of the first fuel injector (51) penetrates through the first threading hole (221) to be electrically connected with the detection terminal (3) on the first schematic diagram (241);
the head end of the second oil sprayer (52) penetrates through the second positioning hole (422) and the tail end of the second oil sprayer is inserted into the second fixing groove (412), and a connecting line of the second oil sprayer (52) penetrates through the second threading hole (222) to be electrically connected with the detection terminal (3) on the second schematic diagram (242);
the head end of the third oil sprayer (53) penetrates through the third positioning hole (423) and the tail end of the third oil sprayer is inserted into the third fixing groove (413), and a connecting line of the third oil sprayer (53) penetrates through the third threading hole (223) to be electrically connected with the detection terminal (3) on the third schematic diagram (243);
the head end of the fourth oil injector (54) penetrates through the fourth positioning hole (424), the tail end of the fourth oil injector is inserted into the fourth fixing groove (414), and a connecting line of the fourth oil injector (54) penetrates through the fourth threading hole (224) to be electrically connected with the detection terminal (3) on the fourth schematic diagram (244).
2. A fuel injector teaching aid as claimed in claim 1, wherein the hole pitch between the first threading hole (221) and the second threading hole (222) is equal to the hole pitch between the second threading hole (222) and the third threading hole (223);
the hole spacing between the first threading hole (221) and the second threading hole (222) is equal to the hole spacing between the third threading hole (223) and the fourth threading hole (224).
3. A fuel injector teaching aid as claimed in claim 1, characterized in that the diagram spacing between the first schematic diagram (241) and the second schematic diagram (242) is equal to the diagram spacing between the second schematic diagram (242) and the third schematic diagram (243);
the graph pitch between the first schematic diagram (241) and the second schematic diagram (242) is equal to the graph pitch between the third schematic diagram (243) and the fourth schematic diagram (244).
4. A fuel injector teaching aid as claimed in claim 1, characterized in that the cross-sections of the first connecting piece (41) and the second connecting piece (42) are both L-shaped and have connecting holes (43), and a bolt is connected with a nut through the connecting holes (43) and the fixing hole (231), so that the first connecting piece (41) or the second connecting piece (42) is fixed to the component placement area (23) of the panel (2).
5. A fuel injector teaching aid as claimed in claim 4, characterized in that the groove spacing between the first fixing groove (411) and the second fixing groove (412) is equal to the groove spacing between the second fixing groove (412) and the third fixing groove (413);
a groove pitch between the first fixing groove (411) and the second fixing groove (412) is equal to a groove pitch between the third fixing groove (413) and the fourth fixing groove (414).
6. A fuel injector teaching aid as claimed in claim 4, characterized in that the hole pitch between the first positioning hole (421) and the second positioning hole (422) is equal to the hole pitch between the second positioning hole (422) and the third positioning hole (423);
the hole pitch between the first positioning hole (421) and the second positioning hole (422) is equal to the hole pitch between the third positioning hole (423) and the fourth positioning hole (424).
7. A fuel injector teaching aid as claimed in claim 1, characterized in that the base (1) is made of metal, or plastic, or wood;
if the base (1) is made of metal, the bottom plate (11), the front plate (12), the rear plate (13) and the side plates (14) are formed by stamping, bending and welding sheet metal materials (15) with the thickness of 0.8-1.5 mm;
if the base (1) is made of plastic, the bottom plate (11), the front plate (12), the rear plate (13) and the side plates (14) are integrally formed by injection molding through an injection molding machine;
if the bottom plate (11) is made of bakelite, the bottom plate (11), the front plate (12), the rear plate (13) and the side plates (14) are formed by assembling and connecting screws.
8. A fuel injector teaching aid as claimed in claim 7, characterized in that when the base (1) is made of metal, a protective layer (16) is sprayed on the surface of the base (1).
9. A fuel injector teaching aid as claimed in claim 1, characterized in that the material of the panel (2) is not limited to acrylic, toughened glass, PET, PC, PVC, ABS.
10. A fuel injector teaching aid as claimed in claim 1, further comprising four foot pads (6) and a handle, wherein the foot pads (6) are symmetrically fixed on the lower end face of the base plate (11), the foot pads (6) are of an inverted truncated cone structure, and the height of the foot pads (6) is not less than 10 mm;
the number of the handles is two, and the handles are symmetrically fixed on the outer side surface of the side plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920898185.0U CN210836791U (en) | 2019-06-15 | 2019-06-15 | Fuel injector teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920898185.0U CN210836791U (en) | 2019-06-15 | 2019-06-15 | Fuel injector teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210836791U true CN210836791U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920898185.0U Active CN210836791U (en) | 2019-06-15 | 2019-06-15 | Fuel injector teaching aid |
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| Country | Link |
|---|---|
| CN (1) | CN210836791U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115382699A (en) * | 2022-09-20 | 2022-11-25 | 北京航空航天大学 | Fuel injector clamping and liquid conveying device |
-
2019
- 2019-06-15 CN CN201920898185.0U patent/CN210836791U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115382699A (en) * | 2022-09-20 | 2022-11-25 | 北京航空航天大学 | Fuel injector clamping and liquid conveying device |
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