Laser dotting timing vehicle
By integrating laser dosing structure on the car, the problem of cumbersome installation and large errors in the existing technology is solved, and a more efficient and convenient timekeeping function is achieved, which is suitable for comparative experiments in middle school physics experiments.
Patent Information
- Application Number
- CN202320107929.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-02-03
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-02-03
AI Technical Summary
The installation of the electric spark dosing timer and electromagnetic dosing timer used in middle school physics experiments is complicated, and the error is large, and the dosing frequency cannot be changed, and the utilization rate is low, so the comparison experiment cannot be conducted.
A small car with integrated laser dot structure is designed, including a sliding laser, pulse signal generator and adjustment button, which can adjust the frequency and width of laser dot, reduce the friction between the paper tape and dot timing car, improve dot accuracy and Convenience.
By reducing friction and error, the accuracy and utilization of the tap are improved, which facilitates comparative experiments and achieves a more stable and efficient timing function.
Smart Images
Figure CN222281424U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of teaching experimental instruments, in particular to a laser dot timing vehicle. Background Art
[0002] At present, when studying the movement of objects on mechanical tracks in middle school physics experiments, the electric spark dotting timer and electromagnetic dotting timer are used. Not only is the installation of the grinding disc or paper tape cumbersome, but there is also an error between the calculated results and the actual results. During the experiment, the dotting time of the electric spark dotting timer and the unstable fixation of the ink disc and paper tape must be considered. A piece of paper tape can only be used for dotting once, so the utilization rate is low, and the dotting frequency cannot be changed, making it impossible to conduct comparative experiments. Utility Model Content
[0003] The utility model provides a laser dot timing vehicle, aiming to solve at least one of the technical problems existing in the prior art.
[0004] The technical solution of the utility model is a laser dot timing vehicle, comprising: a trolley with rollers; a laser slidably arranged on the trolley, the sliding direction of the laser intersecting with the movement direction of the trolley, and the laser having a laser head facing the bottom of the trolley; a laser driving component and a pulse signal generator respectively arranged on the trolley, and the pulse signal generator is respectively electrically connected to a display screen and an adjustment button; wherein the laser driving component is respectively electrically connected to the laser and the pulse signal generator.
[0005] Furthermore, the vehicle includes: a bottom plate, a vehicle body arranged on the bottom plate, a receiving cavity inside the vehicle body, an opening matching the bottom plate at the bottom of the receiving cavity; a first partition and a second partition respectively arranged in parallel in the receiving cavity; wherein the laser driving component and the pulse signal generator are respectively arranged in the receiving cavity between the second partition and the rear end of the vehicle body, and the display screen and the adjustment buttons are respectively operated through the vehicle body; the laser is slidably arranged on the bottom plate, a laser hole is opened on the bottom plate, the laser head passes through the laser hole to the bottom of the bottom plate, and the laser is located between the first partition and the second partition.
[0006] Furthermore, a guide rail is provided on the vehicle body between the first partition and the second partition, and the guide rail is substantially perpendicular to the moving direction of the trolley; a sliding member slidably matched with the guide rail is provided on the top of the laser, and the sliding member is operated through the vehicle body.
[0007] Furthermore, a sliding hole cooperating with the sliding member is opened on the top of the vehicle body, and the top of the sliding member passes through the sliding hole and is connected to a toggle member outside the top of the vehicle body.
[0008] Furthermore, a slide groove is provided on the top of the vehicle body, a slide hole is opened at the bottom of the slide groove, and the toggle member is arranged in the slide groove.
[0009] Furthermore, a display hole and a button hole are provided on the top of the vehicle body, and the display screen and the adjustment buttons are exposed through the display hole and the button hole respectively.
[0010] Furthermore, the adjustment buttons include a pulse width button, a pulse frequency button, a power button and a start button.
[0011] Furthermore, it includes: a power supply, which is arranged in a receiving cavity between the first partition and the front end of the vehicle body.
[0012] Furthermore, an anti-collision hole is also provided at the front end of the vehicle body.
[0013] Furthermore, a cargo compartment is provided on the top of the vehicle body, and the top of the cargo compartment is open.
[0014] The beneficial effects of the utility model are as follows.
[0015] In the present application, the laser dotting structure is integrated into the trolley, so that the paper tape and the dotting timing trolley are separated, the friction between the paper tape and the dotting timing trolley and the influence of the friction on the dotting accuracy are reduced, the dotting error is reduced, and the convenience and accuracy of dotting are improved. The pulse signal generator can adjust the frequency of laser dotting and the duty cycle of the dotting width respectively. Adjusting the sliding position of the laser can change the dotting position of the laser head in the horizontal direction of the paper tape, thereby improving the utilization rate of the paper tape and facilitating comparative experiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.
[0017] Figure 2 It is a schematic diagram of the longitudinal structure of an embodiment of the utility model.
[0018] Figure 3 It is a right side schematic diagram of an embodiment of the utility model.
[0019] Figure 4 It is a dotting working state diagram of an embodiment of the utility model.
[0020] Figure 5 This is a comparison diagram of dotting effects after multiple comparisons of dotting timings on the same paper tape according to an embodiment of the utility model.
[0021] In the above figure, 100, trolley; 110, body; 111, boss; 112, first partition; 113, guide rail; 114, cargo compartment; 115, anti-collision hole; 116, button hole; 117, display hole; 118, slide groove; 119, slide hole; 120, bottom plate; 130, second partition; 140, roller; 200, laser; 210, laser head; 220, sliding part; 230, toggle part; 240, screw; 300, pulse signal generator; 310, display screen; 320, pulse width button; 330, pulse frequency button; 340, power button; 350, start button; 400, laser drive component; 500, power supply. DETAILED DESCRIPTION
[0022] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other without conflict.
[0023] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, top, bottom, etc. used in the present invention are only relative to the relative positional relationship of the various components of the present invention in the accompanying drawings.
[0024] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments, not for limiting the present invention. The term "and / or" used herein includes any combination of one or more related listed items.
[0025] It should be understood that, although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.
[0026] Reference Figures 1 to 3In some embodiments, the laser dot timing vehicle according to the utility model includes: a trolley 100 having a roller 140; a laser 200 slidably arranged on the trolley 100, the sliding direction of the laser 200 intersects with the movement direction of the trolley 100, and the laser 200 has a laser head 210 facing the bottom of the trolley 100; a laser driving component 400 and a pulse signal generator 300 respectively arranged on the trolley 100, and the pulse signal generator 300 is electrically connected to a display screen 310 and an adjustment button respectively; wherein the laser driving component 400 is electrically connected to the laser 200 and the pulse signal generator 300 respectively. In the present application, the laser dotting structure is integrated into the trolley 100, so that the paper tape and the dotting timing trolley are separated, the friction between the paper tape and the dotting timing trolley and the influence of the friction on the dotting accuracy are reduced, the dotting error is reduced, and the dotting accuracy is improved. The pulse signal generator 300 can adjust the frequency and the dotting width duty cycle of the laser 200 respectively. Adjusting the sliding position of the laser 200 can change the dotting position of the laser head 210 in the transverse direction of the paper tape, thereby improving the utilization rate of the paper tape and facilitating comparative experiments. The laser dotting driven by generating pulses through crystal oscillation is more stable and more accurate in frequency than the electromagnetic dotting timer and the electric spark dotting timer.
[0027] Specifically, in the working state, when the laser dotting trolley 100 slides on a track with a paper tape, the pulse signal generator 300 transmits the pulse signal generated by the crystal oscillation circuit to the laser driving component 400, and the laser driving component 400 outputs a high voltage current to the laser 200 according to the pulse signal, driving the laser 200 to dot the paper tape at the bottom of the trolley 100 at a preset frequency and time.
[0028] It should be mentioned that the pulse signal generator 300 can control the dotting frequency cycle of the laser 200 to be in the range of 1 to 1000 Hz and the pulse width duty cycle to be in the range of 1% to 100%, so as to realize the comparative experiment of dotting with different frequencies and pulse width duty cycles through a wide range of frequencies and pulse width duty cycles. In addition, the smaller the pulse width duty cycle, the smaller and clearer the dotting area is, making it easier for the experimenter to measure and read.
[0029] In addition, in all embodiments of the present invention, Figure 5 As shown, the paper tape preferably uses a photosensitive paper tape with better laser dotting effect.
[0030] Continue to refer to Figure 2In order to facilitate the installation of the laser 200, the laser driving assembly 400 and the pulse signal generator 300 and avoid collision with the outside world during experiment or placement, the trolley 100 includes: a bottom plate 120, a body 110 arranged on the bottom plate 120, the body 110 has a receiving cavity inside, and the bottom of the receiving cavity is provided with an opening matching the bottom plate 120; a first partition 112 and a second partition 130 respectively arranged in parallel in the receiving cavity; wherein the laser driving assembly 400 and the pulse signal generator 300 are respectively arranged in the receiving cavity between the second partition 130 and the rear end of the body 110, and the display screen 310 and the adjustment button are respectively operated through the body 110; the laser 200 is slidably arranged on the bottom plate 120 A laser hole is provided on the bottom plate 120, and the laser head 210 passes through the laser hole to the bottom of the bottom plate 120, so as to dot the paper tape on the bottom slide rail of the bottom plate 120 of the trolley 100 when the trolley 100 slides, and the laser 200 is located between the first partition 112 and the second partition 130, and the accommodating cavity is separated into a plurality of installation spaces by the first partition 112 and the second partition 130, and the laser 200 is separately arranged between the first partition 112 and the second partition 130, so as to avoid interference between the laser 200 and the laser driving assembly 400 and the pulse signal generator 300 when adjusting the sliding position of the laser 200, thereby further improving the stability and dot accuracy of the laser dot timing vehicle.
[0031] In order to prevent the laser 200 from shaking in the accommodating cavity during the sliding of the trolley 100 and affecting the dot-marking accuracy, a guide rail 113 is provided between the first partition 112 and the second partition 130 on the body 110, and the guide rail 113 is basically perpendicular to the movement direction of the trolley 100; a sliding member 220 is provided on the top of the laser 200 and slidably cooperates with the guide rail 113, and the sliding member 220 is operated through the body 110. Specifically, the guide rail 113 which is basically perpendicular to the movement direction of the trolley 100 can cooperate with the sliding member 220 on the top of the laser 200 to change the position of the laser 200 and the laser head 210 on the trolley 100 through the smallest amplitude position adjustment, so that the laser head 210 can perform multiple dot-marking timing experiments on the same paper tape multiple times. The sliding cooperation between the sliding member 220 and the guide rail 113, and the sliding cooperation between the bottom of the mechanism and the top of the base plate 120 further limit the laser 200 to move only along its adjustment direction, thereby preventing the laser 200 from shaking when the laser dot-marking timing vehicle is dotting and affecting the dot-marking accuracy.
[0032] Back to Figure 1 In order to facilitate the operation of adjusting the sliding member 220, a sliding hole 119 cooperating with the sliding member 220 is opened on the top of the body 110. The top of the sliding member 220 passes through the sliding hole 119 and is connected to a toggle member 230 outside the top of the body 110. The experimenter can change the sliding position of the laser 200 by adjusting the toggle member 230 along the direction of the sliding hole 119, which is convenient and quick.
[0033] In order to further improve the dot-marking accuracy of the laser 200, a slide groove 118 is provided on the top of the car body 110, a slide hole 119 is opened at the bottom of the slide groove 118, and a toggle member 230 is arranged in the slide groove 118. The bottom of the toggle member 230 cooperates with the top of the sliding member 220, respectively supporting the bottom of the slide groove 118 and the inner top of the side of the slide hole 119 of the fuselage, thereby reducing the shaking of the laser 200 along its adjustment direction during the sliding process of the trolley 100 and improving the dot-marking stability.
[0034] Specifically, the top of the toggle member 230 is flush with the top of the vehicle body 110 to prevent the position of the toggle member 230 in the slide groove 118 from changing due to accidental touch.
[0035] In addition, in order to improve the assembly efficiency of the laser dot timing vehicle, the toggle member 230 and the sliding member 220 are screwed together by means of a screw 240 .
[0036] In order to facilitate the experimenter to adjust the parameters of the pulse signal generator 300 during operation, a display hole 117 and a button hole 116 are provided on the top of the vehicle body 110, and the display screen 310 and the adjustment buttons are exposed through the display hole 117 and the button hole 116 respectively. The adjustment buttons include a pulse width button 320 for adjusting the pulse width duty cycle, a pulse frequency button 330 for adjusting the pulse frequency, a power button 340 for turning on and off the pulse signal generator 300, and a start button 350 for starting the laser driving component 400.
[0037] In order to improve the integration of the laser marking vehicle 100 of the present application so as to be used outdoors, it further includes: a power supply 500, which is disposed in the accommodation cavity between the first partition 112 and the front end of the vehicle body 110. Specifically, the power supply 500 includes an integrated power supply 500 or a battery compartment with a battery.
[0038] In order to prevent the laser dotting timing vehicle from colliding with and rebounding against the baffle on the slide rail after the sliding dotting is completed, the front end of the body 110 is also provided with an anti-collision hole 115, which can cooperate with the anti-collision column of the baffle to achieve the braking of the laser dotting timing vehicle. In addition, a sensor switch can preferably be provided in the accommodation cavity between the power supply 500 and the front end of the body 110 to control the laser 200 to be turned off when the laser dotting timing vehicle stops sliding, so as to prevent the laser 200 that is not turned off from causing damage to the eyes of the experimenter when the experimenter picks up the trolley 100.
[0039] A cargo compartment 114 is also provided on the top of the vehicle body 110. The cargo compartment 114 is open at the top. The open cargo compartment 114 can be used to place weights (such as Figure 4 As shown), so that the laser dot timing car can carry out more exploratory experiments and improve its applicability.
[0040] Specifically, a boss 111 is provided at the top of the rear end of the vehicle body 110, and the height of the boss 111 from the top surface of the bottom plate 120 is greater than the height of the open portion of the cargo compartment 114 from the top surface of the bottom plate 120, so as to lower the center of gravity of the laser dot timing vehicle when the cargo compartment 114 is fully loaded, and avoid the phenomenon of rollover, etc. The display hole 117, the button hole 116 and the slide slot 118 are all provided at the top of the boss 111, so that the experimenter can operate and adjust.
[0041] It should be mentioned that in all embodiments of the present invention, the front end only represents Figure 2 The right end of the perspective, the back end only represents Figure 2 The view is towards the left.
[0042] In addition, the drawings in the specification of the present utility model are only for illustrating the above embodiments, and the actual proportions are not equal to the product application proportions.
[0043] The above is only a preferred embodiment of the utility model. The utility model is not limited to the above implementation. As long as the technical effect of the utility model is achieved by the same means, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the scope of protection of the present disclosure. All should belong to the protection scope of the utility model. Within the protection scope of the utility model, its technical solution and / or implementation method can have various modifications and changes.
Claims
1. Laser dot timing car, characterized by: include: A trolley (100) having rollers (140); a laser (200) slidably disposed on the trolley (100), wherein the sliding direction of the laser (200) intersects with the moving direction of the trolley (100), and the laser (200) has a laser head (210) facing the bottom of the trolley (100); A laser driving component (400) and a pulse signal generator (300) are respectively arranged on the trolley (100), and the pulse signal generator (300) is respectively electrically connected to a display screen (310) and an adjustment button; Wherein, the laser driving component (400) is electrically connected to the laser (200) and the pulse signal generator (300) respectively.
2. The laser dot timing vehicle according to claim 1, characterized in that: The trolley (100) comprises: Bottom plate (120), A vehicle body (110) disposed on the bottom plate (120), the vehicle body (110) having an interior containing a cavity, the bottom of the cavity being provided with an opening that matches the bottom plate (120); A first partition plate (112) and a second partition plate (130) respectively arranged in parallel in the accommodating cavity; The laser driving component (400) and the pulse signal generator (300) are respectively arranged in a receiving cavity between the second partition plate (130) and the rear end of the vehicle body (110), and the display screen (310) and the adjustment button are respectively operated through the vehicle body (110); The laser (200) is slidably arranged on the bottom plate (120), a laser hole is opened on the bottom plate (120), the laser head (210) passes through the laser hole to the bottom of the bottom plate (120), and the laser (200) is located between the first partition plate (112) and the second partition plate (130).
3. The laser dot timing vehicle according to claim 2, characterized in that: The vehicle body (110) is provided with a guide rail (113) between the first partition (112) and the second partition (130), and the guide rail (113) is substantially perpendicular to the movement direction of the trolley (100); A sliding member (220) that slidably cooperates with the guide rail (113) is provided on the top of the laser (200), and the sliding member (220) is operated through the vehicle body (110).
4. The laser dot timing vehicle according to claim 3, characterized in that: The top of the vehicle body (110) is provided with a sliding hole (119) that cooperates with the sliding member (220); the top of the sliding member (220) passes through the sliding hole (119) and is connected to a toggle member (230) outside the top of the vehicle body (110).
5. The laser dot timing vehicle according to claim 4, characterized in that: A slide groove (118) is provided on the top of the vehicle body (110), the slide hole (119) is opened at the bottom of the slide groove (118), and the shifting member (230) is arranged in the slide groove (118).
6. The laser dot timing vehicle according to claim 2, characterized in that: A display hole (117) and a button hole (116) are provided on the top of the vehicle body (110), and the display screen (310) and the adjustment button are exposed through the display hole (117) and the button hole (116) respectively.
7. The laser dot timing vehicle according to claim 6, characterized in that: The adjustment buttons include a pulse width button (320), a pulse frequency button (330), a power button (340) and a start button (350).
8. The laser dot timing vehicle according to claim 2, characterized in that: include: A power source (500) is disposed in a receiving cavity between the first partition plate (112) and the front end of the vehicle body (110).
9. The laser dot timing vehicle according to claim 2, characterized in that: The front end of the vehicle body (110) is also provided with an anti-collision hole (115).
10. The laser dot timing vehicle according to claim 2, characterized in that: A cargo compartment (114) is also provided on the top of the vehicle body (110), and the top of the cargo compartment (114) is open.