CN207440536U - A kind of physics teaching dotted timer - Google Patents
A kind of physics teaching dotted timer Download PDFInfo
- Publication number
- CN207440536U CN207440536U CN201721568632.3U CN201721568632U CN207440536U CN 207440536 U CN207440536 U CN 207440536U CN 201721568632 U CN201721568632 U CN 201721568632U CN 207440536 U CN207440536 U CN 207440536U
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- CN
- China
- Prior art keywords
- protective shell
- pedestal
- telescopic rod
- fixed
- permanent magnet
- 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.)
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Abstract
The utility model discloses a kind of physics teaching dotted timers, including pedestal, there is protective shell in the upper surface of the pedestal by being fixed, the center of the inner wall of the protective shell is provided with fixture block, the locking member includes telescopic rod locating rod, the locating rod is fixed on the outer surface of telescopic rod, the part that the outer surface of the telescopic rod is located inside protective shell is further fixed on spring, the side surface of the pedestal is provided with card slot along its length corresponding to the fixture block, by engaging protective shell is made to be fixed with pedestal, it is fixed conveniently, punching timer is avoided to be damaged for a long time exposed to the external world；What the end set of the upper surface of the protective shell had " Z " type structure renovates fixing groove; the inside for renovating fixing groove is rotatably provided with by hinge renovates; the inside renovated is binding post; it is convenient to renovate either on or off; and can good protection binding post, extend the service life of dotted timer.
Description
Technical field
The utility model belongs to physics educational apparatus technical field, and in particular to a kind of physics teaching dotted timer.
Background technology
Electromagnetic shooting point timer：After coil energization to electromagnetic shooting point timer, coil generates magnetic field, shaking in coil
Piece is magnetized, and the piece that shakes is moved upwardly or downwardly under the action of permanent magnet field, since the direction of alternating current each cycle will
Variation twice, therefore the piece that shakes be magnetized after magnetic pole to change, the direction of its active force will also occur for permanent magnet
Variation.When electric current is shown in figure first, get ready do not get ready once or at this time at this time, so being got ready in a cycle of alternating current
Once, i.e., the time interval between each two point is equal to the cycle of alternating current.Most of electromagnetic shooting point timers in the market, work department
Divide and be all directly exposed to outside, lack protection structure, since student's quantity is big, can inevitably damage dotted timer, outer housing
The problem of being inconvenient to dismantle, being not easy to repair internal components, therefore it is proposed that a kind of physics teaching dotted timer.
Utility model content
The purpose of this utility model is to provide a kind of physics teaching dotted timer, to solve in above-mentioned background technology
The electromagnetic shooting point timers most of in the market proposed, working portion are all directly exposed to outside, lack protection structure, due to
Student's quantity is big, inevitably can damage dotted timer, outer housing is inconvenient to dismantle, the problem of being not easy to repair internal components.
To achieve the above object, the utility model provides following technical solution：A kind of physics teaching dotted timer, bag
Pedestal is included, there is protective shell in the upper surface of the pedestal by being fixed, and the end set of the upper surface of the protective shell has " Z "
Type structure renovates fixing groove, and the upper surface opposition that the bottom for renovating fixing groove is located at the protective shell is provided with the second limit
Position hole, the inside for renovating fixing groove is rotatably provided with by hinge renovates, the end pair of the side surface of the protective shell
Erect and be equipped with the first limit hole, and first limit hole through the protective shell side surface and with the inside of the protective shell
Connection, the center of the inner wall of the protective shell is provided with fixture block, and the fixture block is distributed in three sides of protective shell inner wall
Face, the center of the 4th side are provided with locking member, and the locking member includes telescopic rod and locating rod, and described stretch
Contracting bar is fixed on the outer of the telescopic rod through the end face of the protective shell and the inside of the embedded protective shell, the locating rod
Surface is located at the part inside the protective shell, and the part that the outer surface of the telescopic rod is located inside the protective shell is also fixed
There is a spring, and one end of the spring is fixedly connected with the inner wall of the other end and the protective shell with the side surface of the locating rod and consolidates
Fixed connection, the end of the upper surface of the pedestal opposes in the width direction is fixed with binding post, and institute is located between the binding post
The upper surface for stating pedestal is fixedly installed support base, and the upper surface of the support base passes through screw along the commercial city direction of the pedestal
Vibrating reed is fixed with, the outer surface of the vibrating reed is provided with coil, and the coil is screwed in the pedestal
Upper surface, the upper surface that the one side of the coil is located at the pedestal is screwed and is provided with permanent magnet, described permanent
Magnet has two panels, is set along the width of the upper surface of the pedestal, and is provided with fixed column between two panels permanent magnet, institute
It states vibrating reed to pass through between the permanent magnet, the end of the lower surface of the vibrating reed has been screwed the pin that shakes, institute
The one side for stating the pin that shakes is located at the upper surface of the pedestal and is provided with carbon paper fixed link, and the end face of the pedestal is provided with fixation
Hole, and the mounting hole is embedded in the inside of the pedestal, the binding post is electrically connected with the power supply.
Preferably, described renovate can be embedded in the inside for renovating fixing groove, and the inside of second limit hole is set
There is the first permanent magnet, the position that the first permanent magnet is corresponded in the lower surface renovated is provided with the second permanent magnet.
Preferably, the locating rod is identical and described with the depth of the mounting hole with the distance of the telescopic rod end
The end of telescopic rod can be embedded in the inside of the mounting hole.
Preferably, the end opposition of the outer surface of the telescopic rod is provided with slide protrusion, in the inner wall of the mounting hole
Upper opposition is provided with sliding groove.
Preferably, the side surface of the pedestal is provided with card slot along its length corresponding to the fixture block.
Compared with prior art, the beneficial effects of the utility model are：The upper surface of the pedestal has by being fixed
Protective shell, the center of the inner wall of the protective shell is provided with fixture block, and fixture block is distributed in three sides of protective shell inner wall,
The center of 4th side is provided with locking member, and the locking member includes telescopic rod locating rod, and the locating rod is consolidated
Due to the outer surface of telescopic rod, the part that the outer surface of the telescopic rod is located inside protective shell is further fixed on spring, the bottom
The side surface of seat is provided with card slot along its length corresponding to the fixture block, by engaging protective shell is made to be fixed with pedestal, fixed
It is convenient, punching timer is avoided to be damaged for a long time exposed to the external world；The end set of the upper surface of the protective shell has " Z " type knot
Structure renovates fixing groove, and the inside for renovating fixing groove is rotatably provided with by hinge renovates, and the inside renovated is wiring
Column renovates either on or off conveniently, and the good protection binding post of energy, extends the service life of dotted timer.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the pedestal dimensional structure diagram of the utility model；
Fig. 3 is the protective shell dimensional structure diagram of the utility model；
Fig. 4 is the protective shell present invention looks up structural representation of the utility model；
In figure：1- is renovated, 2- pedestals, the first limit holes of 3-, 4- protective shells, 5- binding posts, 6- support bases, 7- coils, 8-
Vibrating reed, 9- permanent magnets, 10- fixed columns, 11- mounting holes, 12- shake pin, 13- carbon paper fixed link, 14- renovate fixing groove,
The second limit holes of 15-, 16- fixture blocks, 17- locking members, 18- telescopic rods, 19- springs, 20- locating rods.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
It please refers to Fig.1, Fig. 2, Fig. 3 and Fig. 4, the utility model provides a kind of technical solution：A kind of physics teaching is with getting ready
Timer, including pedestal 2, there is protective shell 4 in the upper surface of pedestal 2 by being fixed, the end set of the upper surface of protective shell 4
Have " Z " type structure renovates fixing groove 14, renovate fixing groove 14 bottom be located at protective shell 4 upper surface opposition be provided with second
Limit hole 15, the inside for renovating fixing groove 14 are rotatably provided with by hinge and renovate 1, the end pair of the side surface of protective shell 4
It erects and is equipped with the first limit hole 3, and the first limit hole 3 is connected through the side surface of protective shell 4 and with the inside of protective shell 4, is protected
The center of the inner wall of protective case 4 is provided with fixture block 16, and fixture block 16 is distributed in three sides of 4 inner wall of protective shell, the 4th
The center of side is provided with locking member 17, and locking member 17 includes telescopic rod 18 and locating rod 20, and telescopic rod 18 passes through
The end face of protective shell 4 and the inside of embedded protective shell 4 are worn, the outer surface that locating rod 20 is fixed on telescopic rod 18 is located at protective shell 4
Internal part, the part that the outer surface of telescopic rod 18 is located inside protective shell 4 is further fixed on spring 19, and one end of spring 19
The other end is fixedly connected with the side surface of locating rod 20 to be fixedly connected with the inner wall of protective shell 4, the end edge of the upper surface of pedestal 2
Width opposition is fixed with binding post 5, and the upper surface that pedestal 2 is located between binding post 5 is fixedly installed support base 6, supports
The commercial city direction of upper surface along the pedestal 2 of seat 6 has been screwed vibrating reed 8, and the outer surface of vibrating reed 8 is provided with coil 7,
And coil 7 is screwed in the upper surface of pedestal 2, the upper surface that the one side of coil 7 is located at pedestal 2 is screwed and sets
Be equipped with permanent magnet 9, permanent magnet 9 has two panels, along the upper surface of pedestal 2 width set, and two panels permanent magnet 9 it
Between be provided with fixed column 10, vibrating reed 8 is passed through between permanent magnet 9, and the end of the lower surface of vibrating reed 8 is screwed
There is the pin 12 that shakes, the upper surface that the one side of the pin 12 that shakes is located at pedestal 2 is provided with carbon paper fixed link 13, and the end face of pedestal 2 is provided with
Mounting hole 11, and mounting hole 11 is embedded in the inside of pedestal 2, binding post 5 is electrically connected with the power supply.
In order to make to renovate 1 and protective shell 4 fix and more stablize, in the present embodiment, it is preferred that renovate 1 can be embedded in renovate it is solid
Determine the inside of slot 14, and the second limit hole 15 is internally provided with the first permanent magnet, in the lower surface for renovating 1 corresponds to first forever
The position of magnet is provided with the second permanent magnet.
It is excellent in the present embodiment for the ease of telescopic rod 18 and mounting hole 11 so that protective shell 4 and 2 fixing-stable of pedestal
Choosing, locating rod 20 is identical with the depth of mounting hole 11 with the distance of 18 end of telescopic rod, and the end of telescopic rod 18 can be embedded in
The inside of mounting hole 11.
In order to facilitate telescopic rod 18 be embedded in mounting hole 11 inside, avoid it is crooked, in the present embodiment, it is preferred that telescopic rod 18
Outer surface end opposition be provided with slide protrusion, on the inner wall of mounting hole 11 opposition be provided with sliding groove.
In order to make to renovate 1 and 4 fixing-stable of protective shell, and it is easy to disassemble, in the present embodiment, it is preferred that the side table of pedestal 2
Face is provided with card slot along its length corresponding to fixture block 16.
The operation principle and process for using of the utility model：After the coil 7 to electromagnetic shooting point timer is powered, coil 7
Magnetic field is generated, the vibrating reed 8 in coil 7 is magnetized, and vibrating reed 8 is moved upwardly or downwardly under the action of 9 magnetic field of permanent magnet,
Since the direction of alternating current each cycle will change twice, the magnetic pole after vibrating reed 8 is magnetized will change, permanent magnetic
Iron 9 will also change to the direction of its active force；
The center of the inner wall of protective shell 4 is provided with fixture block 16, and fixture block 16 can be with the card slot card on 2 side surface of pedestal
It closes and fixes, during engaging, pull telescopic rod 18, the end of telescopic rod 18 is made to leave one end distance with the end face of pedestal 2, after engaging,
Telescopic rod 18 is unclamped, telescopic rod 18 to 4 internal motion of protective shell, supports under the action of the spring until with the inside of mounting hole 11
It connects, realizes and fix, in addition, there are two grooves in the lower surface of pedestal 2, convenient for pedestal 2 is made to be fixed on laboratory table.
While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art,
It is appreciated that in the case where not departing from the principle of the utility model and spirit can these embodiments be carried out with a variety of variations, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of physics teaching dotted timer, including pedestal (2), it is characterised in that：The upper surface of the pedestal (2) passes through
Being fixed has protective shell (4), and what the end set of the upper surface of the protective shell (4) had " Z " type structure renovates fixing groove
(14), the bottom for renovating fixing groove (14) be located at the protective shell (4) upper surface opposition be provided with the second limit hole
(15), the inside for renovating fixing groove (14) is rotatably provided with by hinge renovates (1), the side table of the protective shell (4)
The end opposition in face is provided with the first limit hole (3), and first limit hole (3) runs through the side surface of the protective shell (4)
And connected with the inside of the protective shell (4), the center of the inner wall of the protective shell (4) is provided with fixture block (16), and institute
Three sides that fixture block (16) is distributed in protective shell (4) inner wall are stated, the center of the 4th side is provided with locking member
(17), the locking member (17) includes telescopic rod (18) and locating rod (20), and the telescopic rod (18) runs through the protection
The end face of shell (4) and the inside for being embedded in the protective shell (4), the locating rod (20) are fixed on the appearance of the telescopic rod (18)
Face is located at the internal part of the protective shell (4), and the outer surface of the telescopic rod (18) is located at the internal portion of the protective shell (4)
Divide and be further fixed on spring (19), and one end of the spring (19) is fixedly connected with the other end with the side surface of the locating rod (20)
It is fixedly connected with the inner wall of the protective shell (4), the end of the upper surface of the pedestal (2), which opposes to being fixed in the width direction, to be connect
Terminal (5), the upper surface that the pedestal (2) is located between the binding post (5) are fixedly installed support base (6), the support
The commercial city direction of upper surface along the pedestal (2) of seat (6) has been screwed vibrating reed (8), the vibrating reed (8) it is outer
Surface is provided with coil (7), and the coil (7) is screwed in the upper surface of the pedestal (2), the coil (7)
One side be located at the upper surface of the pedestal (2) and be screwed and be provided with permanent magnet (9), the permanent magnet (9) has
Two panels sets along the width of the upper surface of the pedestal (2), and is provided with fixed column between two panels permanent magnet (9)
(10), the vibrating reed (8) passes through between the permanent magnet (9), and the end of the lower surface of the vibrating reed (8) passes through spiral shell
Silk is fixed with the pin that shakes (12), and the upper surface that the one side of the pin that shakes (12) is located at the pedestal (2) is provided with carbon paper fixed link
(13), the end face of the pedestal (2) is provided with mounting hole (11), and the inside of the embedded pedestal (2) of the mounting hole (11),
The binding post (5) is electrically connected with the power supply.
2. a kind of physics teaching dotted timer according to claim 1, it is characterised in that：Renovate (1) can be embedding
Enter the inside for renovating fixing groove (14), and second limit hole (15) is internally provided with the first permanent magnet, described
The lower surface for renovating (1) is provided with the second permanent magnet corresponding to the position of the first permanent magnet.
3. a kind of physics teaching dotted timer according to claim 1, it is characterised in that：The locating rod (20) with
The distance of telescopic rod (18) end is identical with the depth of the mounting hole (11), and the end of the telescopic rod (18) can be embedding
Enter the inside of the mounting hole (11).
4. a kind of physics teaching dotted timer according to claim 1, it is characterised in that：The telescopic rod (18)
The end opposition of outer surface is provided with slide protrusion, and opposition is provided with sliding groove on the inner wall of the mounting hole (11).
5. a kind of physics teaching dotted timer according to claim 1, it is characterised in that：The side of the pedestal (2)
Surface is provided with card slot along its length corresponding to the fixture block (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721568632.3U CN207440536U (en) | 2017-11-22 | 2017-11-22 | A kind of physics teaching dotted timer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721568632.3U CN207440536U (en) | 2017-11-22 | 2017-11-22 | A kind of physics teaching dotted timer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207440536U true CN207440536U (en) | 2018-06-01 |
Family
ID=62286773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721568632.3U Expired - Fee Related CN207440536U (en) | 2017-11-22 | 2017-11-22 | A kind of physics teaching dotted timer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207440536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108835969A (en) * | 2018-07-19 | 2018-11-20 | 郑州科技学院 | A kind of art teaching display type easel |
-
2017
- 2017-11-22 CN CN201721568632.3U patent/CN207440536U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108835969A (en) * | 2018-07-19 | 2018-11-20 | 郑州科技学院 | A kind of art teaching display type easel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20181122 |