CN211928862U

CN211928862U - Demonstration device of direct current motor

Info

Publication number: CN211928862U
Application number: CN202020067614.2U
Authority: CN
Inventors: 章强; 冯祥雨; 丁传伟; 黄时有
Original assignee: Hefei Zhengyu Automation Technology Co ltd
Current assignee: Hefei Zhengyu Automation Technology Co ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-11-13
Anticipated expiration: 2030-01-14

Abstract

The utility model discloses a demonstration device of a direct current motor, which relates to the technical field of science popularization display devices, and comprises a display stand, wherein the display stand is fixedly connected with a stand column, the stand column is provided with a step shaft with reduced shaft diameter, the step shaft is sequentially sleeved with a movable lower support plate, an isolation sleeve and an upper support plate, the upper surface of the lower support plate is fixedly connected with a first magnet, and the lower surface of the upper support plate is fixedly connected with a second magnet; fixedly connected with supporting seat on the stand, it is connected with the pivot to rotate on the supporting seat, pivot upper end fixedly connected with carousel, through bolt fixedly connected with copper on the carousel, the limit portion of copper is located between first magnet and the second magnet. The utility model discloses a spectator's actual operation experiences the change that the carousel takes place, has increased experience and has felt for the participant knows direct current motor's theory of operation more directly perceived.

Description

Demonstration device of direct current motor

The technical field is as follows:

the utility model relates to a science popularization display device technical field especially relates to a DC motor's presentation device.

Background art:

the science popularization exhibit is a product for showing science and popularizing scientific knowledge in short. The scientific exhibit has scientificity and vividness, and can vividly and vividly show scientific knowledge. For the purpose of popularizing scientific knowledge. Science popularization exhibits are scientific knowledge displays, and thus, the science popularization exhibits are bound to become an indispensable component of science education and even quality education. Social quality education has gone up the educational regularization schedule today, and science popularization education has also highlighted its importance in such a large environment. Science and technology museums and science and education museums become a component of school education. These science and technology museums are composed of various popular science exhibits. The popular science exhibits become the main elements in the science and technology museum.

The direct current motor is used as the earliest appearing machine in the motor, has the characteristics of high rotating speed, small volume and large torque, is widely applied to various mechanical engineering fields in China, basically converts electric energy into mechanical energy, and is used as a power source to drive various mechanical parts to work, so that the direct current motor has irreplaceable effect. The existing direct current motor has a complex structure, the internal working principle cannot be seen clearly from the outside, great difficulty is brought to demonstration, and the demonstration of science popularization is not facilitated.

The utility model has the following contents:

the utility model discloses the purpose is to solve the inconvenient technical problem who demonstrates of current DC motor, provides a DC motor's presentation device, experiences the change that the carousel takes place through spectator's actual operation, has increased and has experienced the sense for participant's more audio-visual understanding DC motor's theory of operation.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a demonstration device of a direct current motor comprises a display stand, wherein an upright post is fixedly connected to the display stand, a step shaft with a reduced shaft diameter is arranged on the upright post, a movable lower support plate, an isolation sleeve and an upper support plate are sequentially sleeved on the step shaft in a penetrating manner, a first magnet is fixedly connected to the upper surface of the lower support plate, a second magnet is fixedly connected to the lower surface of the upper support plate, and the first magnet and the second magnet are oppositely arranged and have opposite magnetic poles; the exhibition stand is fixedly connected with a supporting seat, a rotating shaft is rotatably connected to the supporting seat, a rotating disc is fixedly connected to the upper end of the rotating shaft, a copper plate is fixedly connected to the rotating disc through bolts, and the edge of the copper plate is located between the first magnet and the second magnet; fixedly connected with support on the stand, support upper end fixedly connected with mount pad, be equipped with the copper pole in the mount pad, the copper pole is located the carousel top, just the lower extreme of copper pole supports at the bolt upper surface, the inside of support is hollow structure, alternate in the support has first wire, the upper end and the copper pole electricity of first wire are connected, the other end and DC power supply's one end electrode electricity of first wire are connected, the second wire has been placed on the stand, the one end of second wire is connected with DC power supply's other end electrode electricity, the other end of second wire is used for the participant to take and the limit portion electricity of copper is connected between first magnet, the second magnet.

Furthermore, a first groove is formed in the lower support plate, the first magnet is fixed in the first groove in a clamping and embedding mode, the upper end face of the first magnet is flush with the upper surface of the lower support plate, a second groove is formed in the upper support plate, the second magnet is fixed in the second groove in a clamping and embedding mode, and the lower end face of the second magnet is flush with the lower surface of the upper support plate.

Furthermore, an insulating sleeve is fixedly connected to the mounting seat, the insulating sleeve is of a hollow structure, a copper rod which moves up and down is inserted into the insulating sleeve, a gland is fixedly connected to the upper end of the mounting seat, and a first compression spring is arranged in the insulating sleeve and located between the gland and the copper rod.

Furthermore, the turntable is made of a sub-lattice force material, the copper plate is a copper-clad plate, the upper surface of the copper-clad plate is a copper-clad layer, and the upper surface of the copper-clad plate is fixedly connected with a copper sheet.

Furthermore, the interior of the supporting seat is of a hollow structure, a retainer ring protruding towards the inner side is arranged on the inner wall of the supporting seat, a first bearing is embedded in the supporting seat in a clamping manner, the first bearing is sleeved on a rotating shaft in a penetrating manner, a first shaft sleeve is sleeved on the rotating shaft in a penetrating manner, the first shaft sleeve is positioned on the upper side of the first bearing, a second bearing is arranged at the upper end of the first shaft sleeve, and the outer wall of the second bearing is embedded on the inner wall of the supporting seat in a clamping manner; and the upper end of the outer wall of the rotating shaft is sleeved with a second shaft sleeve in a penetrating manner, the second shaft sleeve is positioned on the upper side of the second bearing, and the second shaft sleeve is fixedly connected above the supporting seat and supports the rotating shaft on the supporting seat.

Furthermore, a wiring groove is covered on the second wire, and the wiring groove is made of transparent sub-grid force materials.

The utility model provides a pair of direct current motor's presentation device has following beneficial effect: when the utility model is used, a participant holds one end of the second wire and pushes against the edge of the copper plate between the first magnet and the second magnet, the copper plate is connected with current, so that the copper plate between the current magnets flows through, and the cutting magnetic field generates driving force, so that the turntable rotates, and visual demonstration is realized; the change of the turntable is sensed through the actual operation of audiences, so that the experience is increased, and participants can more visually know the working principle of the direct current motor; the copper plate is fixedly connected with a copper sheet, so that the power-on sectional area can be increased, and the current can be improved; the copper rod is abutted against the bolt through the pretightening force of the first compression spring, so that the contact electrifying effect is good, and the electrification is stable; simple structure, strong operability, clear and clear explanation of scientific principles and other characteristics.

Description of the drawings:

the following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic front view of a demonstration apparatus for a dc motor according to the present invention;

fig. 2 is a schematic side view of a demonstration apparatus for a dc motor according to the present invention;

fig. 3 is a schematic top view of a demonstration apparatus for a dc motor according to the present invention;

FIG. 4 is a partial structural view of the portion A in FIG. 1;

fig. 5 is a partial structural diagram of a portion B in fig. 1.

The reference numbers in the figures illustrate: 1-exhibition stand, 11-second lead, 12-wiring groove, 2-upright post, 21-step shaft, 3-lower support plate, 31-first magnet, 4-isolation sleeve, 5-upper support plate, 51-second magnet, 6-support seat, 61-rotating shaft, 62-rotating disk, 63-bolt, 64-copper plate, 65-copper sheet, 601-retainer ring, 602-first bearing, 603-first shaft sleeve, 604-second bearing, 605-second shaft sleeve, 7-support, 71-mounting seat, 72-copper rod, 73-first lead, 74-insulation sleeve, 75-gland and 76-first compression spring.

The specific implementation mode is as follows:

it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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.

It should be noted that all the directional indicators (such as up-down-left-right-front-back … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawings) -motion situation, etc., and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.

As shown in fig. 1, 2, 3, 4 and 5, a demonstration apparatus for a direct current motor includes a display stand 1, wherein an upright post 2 is fixedly connected to the display stand 1, a step shaft 21 with a reduced shaft diameter is arranged on the upright post 2, a movable lower support plate 3, an isolation sleeve 4 and an upper support plate 5 are sequentially sleeved on the step shaft 21 in a penetrating manner, a first magnet 31 is fixedly connected to the upper surface of the lower support plate 3, a second magnet 51 is fixedly connected to the lower surface of the upper support plate 5, and the first magnet 31 and the second magnet 51 are oppositely arranged and have opposite magnetic poles; a support seat 6 is fixedly connected to the exhibition stand 1, a rotating shaft 61 is rotatably connected to the support seat 6, a rotating disc 62 is fixedly connected to the upper end of the rotating shaft 61, a copper plate 64 is fixedly connected to the rotating disc 62 through a bolt 63, and the edge of the copper plate 64 is positioned between the first magnet 31 and the second magnet 51; fixedly connected with support 7 on stand 1, fixedly connected with mount pad 71 is gone up to support 7, be equipped with copper pole 72 in the mount pad 71, copper pole 72 is located carousel 62 top, just the lower extreme of copper pole 72 supports at bolt 63 upper surface, the inside of support 7 is hollow structure, it has first wire 73 to alternate in the support 7, the upper end and the copper pole 72 electricity of first wire 73 are connected, the other end of first wire 73 is connected with DC power supply's one end electrode electricity, second wire 11 has been placed on stand 1, the one end of second wire 11 is connected with DC power supply's other end electrode electricity, the other end of second wire 11 is used for the participant to take and is connected with the limit portion electricity of copper 64 between first magnet 31, the second magnet 51.

Specifically, a first groove is formed in the lower support plate 3, the first magnet 31 is fixed in the first groove in a clamping and embedding manner, the upper end face of the first magnet is flush with the upper surface of the lower support plate 3, a second groove is formed in the upper support plate 5, the second magnet 51 is fixed in the second groove in a clamping and embedding manner, and the lower end face of the second magnet is flush with the lower surface of the upper support plate 5.

Specifically, an insulating sleeve 74 is fixedly connected to the mounting seat 71, the insulating sleeve 74 is hollow, a copper rod 72 which moves up and down is inserted into the insulating sleeve 74, a gland 75 is fixedly connected to the upper end of the mounting seat 71, a first compression spring 76 is arranged in the insulating sleeve 74, and the first compression spring 76 is located between the gland 75 and the copper rod 72.

Specifically, the turntable 62 is made of a ya ge li material, the copper plate 64 is a copper-clad plate, the upper surface of the copper-clad plate is a copper-clad layer, and the upper surface of the copper-clad plate is fixedly connected with a copper sheet 65.

Specifically, the inside of the supporting seat 6 is a hollow structure, a retaining ring 601 protruding inwards is arranged on the inner wall of the supporting seat 6, a first bearing 602 is embedded in the supporting seat 6 in a clamping manner, the first bearing 602 is sleeved on the rotating shaft 61 in a penetrating manner, a first shaft sleeve 603 is sleeved on the rotating shaft 61 in a penetrating manner, the first shaft sleeve 603 is located on the upper side of the first bearing 602, a second bearing 604 is arranged at the upper end of the first shaft sleeve 603, and the outer wall of the second bearing 604 is embedded on the inner wall of the supporting seat 6 in a clamping manner; the upper end of the outer wall of the rotating shaft 61 is sleeved with a second shaft sleeve 605, the second shaft sleeve 605 is located on the upper side of the second bearing 604, and the second shaft sleeve 605 is fixedly connected above the supporting seat 6 and supports the rotating shaft 61 on the supporting seat 6.

Specifically, the second wire 11 is covered with a wiring groove 12, and the wiring groove 12 is made of a transparent sub-grid material.

By adopting the technical scheme, when the utility model is used, a participant holds one end of the second wire 11 and abuts against the edge part of the copper plate 64 between the first magnet 31 and the second magnet 51, the copper plate 64 is connected with current, so that the current flows through the copper plate 64 between the two magnets, the cutting magnetic field generates driving force, the turntable 62 rotates, and visual demonstration is realized; the copper plate 64 is fixedly connected with a copper sheet 65, so that the power-on sectional area can be increased, and the current can be improved; the copper rod 72 is abutted to the bolt 63 through the pretightening force of the first compression spring 76, so that the contact electrifying effect is good, and the electrification is stable; simple structure, strong operability, clear and clear explanation of scientific principles and other characteristics.

The foregoing shows and describes the general principles, essential features, and features of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description of the above embodiments and the description is only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are all within the scope of the present invention as claimed. The scope of the invention is to be protected by the following claims and their equivalents.

Claims

1. A presentation device of a direct current motor is characterized in that: the device comprises a display stand (1), wherein an upright post (2) is fixedly connected to the display stand (1), a step shaft (21) with a reduced shaft diameter is arranged on the upright post (2), a movable lower support plate (3), an isolation sleeve (4) and an upper support plate (5) sequentially penetrate through and are sleeved on the step shaft (21), a first magnet (31) is fixedly connected to the upper surface of the lower support plate (3), a second magnet (51) is fixedly connected to the lower surface of the upper support plate (5), and the first magnet (31) and the second magnet (51) are oppositely arranged and opposite in magnetic pole; the exhibition stand (1) is fixedly connected with a supporting seat (6), the supporting seat (6) is rotatably connected with a rotating shaft (61), the upper end of the rotating shaft (61) is fixedly connected with a rotating disc (62), the rotating disc (62) is fixedly connected with a copper plate (64) through a bolt (63), and the edge of the copper plate (64) is positioned between a first magnet (31) and a second magnet (51); a bracket (7) is fixedly connected on the exhibition stand (1), the upper end of the bracket (7) is fixedly connected with a mounting seat (71), a copper rod (72) is arranged in the mounting seat (71), the copper rod (72) is positioned above the turntable (62), the lower end of the copper rod (72) is propped against the upper surface of the bolt (63), the inside of the bracket (7) is of a hollow structure, a first lead (73) is inserted in the bracket (7), the upper end of the first lead (73) is electrically connected with the copper rod (72), the other end of the first lead (73) is electrically connected with one end electrode of a direct current power supply, a second lead (11) is placed on the exhibition stand (1), one end of the second lead (11) is electrically connected with the electrode at the other end of the direct current power supply, and the other end of the second lead (11) is used for a participant to take and is electrically connected with the edge of the copper plate (64) between the first magnet (31) and the second magnet (51).

2. The demonstration apparatus for a direct current motor according to claim 1, wherein: the improved bearing seat is characterized in that a first groove is formed in the lower support plate (3), the first magnet (31) is fixed in the first groove in a clamping and embedding mode, the upper end face of the first magnet is flush with the upper surface of the lower support plate (3), a second groove is formed in the upper support plate (5), the second magnet (51) is fixed in the second groove in a clamping and embedding mode, and the lower end face of the second magnet is flush with the lower surface of the upper support plate (5).

3. The demonstration apparatus for a direct current motor according to claim 1, wherein: fixedly connected with insulating cover (74) in mount pad (71), the inside of insulating cover (74) is hollow structure, copper pole (72) of activity about the inside interlude of insulating cover (74), the upper end fixedly connected with gland (75) of mount pad (71), be equipped with first compression spring (76) in insulating cover (74), first compression spring (76) are located between gland (75) and copper pole (72).

4. The demonstration apparatus for a direct current motor according to claim 1, wherein: the turntable (62) is made of a ya ge li material, the copper plate (64) is a copper-clad plate, the upper surface of the copper-clad plate is a copper-clad layer, and the upper surface of the copper-clad plate is fixedly connected with a copper sheet (65).

5. The demonstration apparatus for a direct current motor according to claim 1, wherein: the inner part of the supporting seat (6) is of a hollow structure, a check ring (601) protruding towards the inner side is arranged on the inner wall of the supporting seat (6), a first bearing (602) is embedded in the supporting seat (6) in a clamping mode, the first bearing (602) is sleeved on the rotating shaft (61) in a penetrating mode, a first shaft sleeve (603) is sleeved on the rotating shaft (61) in a penetrating mode, the first shaft sleeve (603) is located on the upper side of the first bearing (602), a second bearing (604) is arranged at the upper end of the first shaft sleeve (603), and the outer wall of the second bearing (604) is embedded on the inner wall of the supporting seat (6) in a; the upper end of the outer wall of the rotating shaft (61) is sleeved with a second shaft sleeve (605), the second shaft sleeve (605) is positioned on the upper side of a second bearing (604), and the second shaft sleeve (605) is fixedly connected above the supporting seat (6) and supports the rotating shaft (61) on the supporting seat (6).

6. The demonstration apparatus for a direct current motor according to claim 1, wherein: the second wire (11) is covered with a wiring groove (12), and the wiring groove (12) is made of a transparent sub-grid force material.