CN217574659U - Spring sheet type movable blackboard pulley and movable blackboard - Google Patents
Spring sheet type movable blackboard pulley and movable blackboard Download PDFInfo
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- CN217574659U CN217574659U CN202121181386.2U CN202121181386U CN217574659U CN 217574659 U CN217574659 U CN 217574659U CN 202121181386 U CN202121181386 U CN 202121181386U CN 217574659 U CN217574659 U CN 217574659U
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- blackboard
- slider
- slide way
- frame slide
- elastic
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Abstract
The utility model discloses a shell fragment formula activity blackboard pulley and activity blackboard, include: the blackboard comprises a connecting piece and a sliding block, wherein the connecting piece is used for connecting a movable writing board of the blackboard, and the sliding block is used for being arranged in a frame slide way of the blackboard and can slide along the frame slide way. With slider and frame slide interference fit to set up the clearance of stepping down between slider main part and elastic component, thereby prevented the problem of rocking around the activity clipboard.
Description
Technical Field
The utility model relates to a teaching equipment technical field especially relates to a shell fragment formula activity blackboard pulley and activity blackboard.
Background
The existing teaching blackboard comprises a frame, a movable writing board and a fixed writing board, wherein the movable writing board is connected with the frame through a pulley, the pulley adopts a slider guide control structure and comprises a connecting piece and a slider which are connected, the connecting piece is connected with the movable writing board, the slider is placed in a frame slide way of the frame and can move along the frame slide way, the inner wall of the frame slide way controls the movement direction of the slider, and the width of the slider is smaller than that of the frame slide way due to the limitation of production technology and precision fit, namely, the slider and the frame slide way are in clearance fit, and the slider and the frame slide way have a clearance, so that the slider can move along the frame slide way besides the movement of the frame slide way, namely, the pulley can slightly move back and forth in the frame slide way, and the movable writing board shakes back and forth when writing and accompanies with the problem of obvious abnormal sound.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a shell fragment formula activity blackboard pulley and activity blackboard with slider and frame slide interference fit to set up the clearance of stepping down between slider main part and elastic component, thereby prevented the problem of rocking around the activity clipboard.
In order to achieve the above purpose, in some embodiments, the following technical solutions are adopted:
a blade-ejection type movable blackboard pulley comprising: the connecting piece and the slider that are connected, the connecting piece is used for connecting the movable clipboard of blackboard, and the slider is used for setting up in the frame slide of blackboard and can slide along the frame slide, slider and frame slide interference fit, the slider includes slider main part and the elastic component of being connected with the slider main part, set up the clearance of stepping down between elastic component and slider main part.
As a further solution, the slider body is made of an elastic material.
As a further proposal, the elastic element is an elastic supporting cantilever which is positioned at the side surface of the slider main body.
As a further scheme, one end of the elastic support cantilever is connected with the slider main body, the other end of the elastic support cantilever is a free end, and an opening is arranged between the free end of the elastic support cantilever and the slider main body, so that a yielding gap exists between the elastic support cantilever and the slider main body.
As a further scheme, the suspension end of the elastic support cantilever is provided with an anti-collision device.
As a further scheme, one elastic supporting cantilever is arranged on any side surface of the slider main body facing the inner wall of the frame slide way;
the elastic supporting cantilever and the sliding block main body are respectively contacted with two inner walls of the frame slideway, so that the sliding block and the frame slideway are in interference fit.
As a further scheme, the number of the elastic supporting cantilevers is two, and the two elastic supporting cantilevers are respectively positioned on two side surfaces of the slider main body facing the inner wall of the frame slide way;
the two elastic supporting cantilevers are respectively contacted with the two inner walls of the frame slide way, so that the slide block is in interference fit with the frame slide way.
As a further scheme, the elastic supporting suspension arm and the sliding block main body are integrally machined;
or the like, or a combination thereof,
the elastic supporting cantilever and the sliding block main body are processed in a split mode.
As a further scheme, the elastic piece is a telescopic column, a mounting hole is formed in the slider main body along the normal surface of the slide way, the telescopic column is arranged in the mounting hole and extends out of the mounting hole for a set distance, and the telescopic column and the slider main body are respectively in contact with two inner walls of the frame slide way to enable the slider to be in interference fit with the frame slide way.
In other embodiments, the following technical solutions are adopted:
a movable blackboard, comprising: frame, activity clipboard and a shell fragment formula activity blackboard pulley, set up the frame slide on the frame, the connecting piece is connected with the activity clipboard, the slider is located the frame slide and can slide along the frame slide, slider and frame slide interference fit.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The utility model discloses with slider and frame slide interference fit to set up the clearance of stepping down between slider main part and elastic component, on the basis of guaranteeing that the activity clipboard normally removes along the frame slide, prevented the problem of rocking around the activity clipboard.
(2) The utility model discloses set up at the free end of elastic support cantilever and prevent bumping the device, effectively prevented that the slider from when sliding in the frame slide, damaging the problem of elastic support cantilever, guaranteed the smooth use of slider.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a front view of a pulley structure of a spring plate type movable blackboard disclosed in embodiment 1 of the present invention;
fig. 2 is a top view of a pulley structure of a spring plate type movable blackboard disclosed in embodiment 1 of the present invention;
fig. 3 is a top view of the pulley structure of the elastic sheet type movable blackboard disclosed in embodiment 2 of the present invention;
fig. 4 is a top view of the pulley structure of the elastic sheet type movable blackboard disclosed in embodiment 3 of the present invention;
fig. 5 is a schematic view of the top installation of the pulley structure of the elastic sheet type movable blackboard disclosed in embodiment 4 of the present invention;
fig. 6 is a schematic front view of the pulley structure of the elastic sheet type movable blackboard disclosed in embodiments 1-3 of the present invention;
fig. 7 is a schematic view of the top-down installation of the pulley structure of the elastic sheet type movable blackboard disclosed in embodiments 1-3 of the present invention.
Wherein, 1, a slide block, 2, a connecting piece, 3, a yielding gap, 4, a slide block main body, 5, an elastic supporting cantilever, 6, a slide block main body, 7, a yielding gap, 8, an elastic supporting cantilever, 9, a slide block main body, 10, a yielding gap, 11, an elastic supporting cantilever, 12, a frame, 13 and a frame slideway, 14, a sliding block main body, 15, a mounting hole, 16, a compression spring, 17, a guide column, 18, a abdicating gap, A, a spring plate type movable blackboard pulley, B, a spring plate type movable blackboard pulley, C, a spring plate type movable blackboard pulley, D and a spring plate type movable blackboard pulley.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
According to the embodiment of the utility model provides a shell fragment formula activity blackboard pulley A's embodiment is disclosed, as shown in figure 1, 2, 6, 7, a shell fragment formula activity blackboard pulley A includes: connecting piece 2 and slider 1 that are connected, connecting piece 2 are used for connecting the movable writing board of blackboard, and slider 1 is used for setting up in the frame slide 13 of the frame 12 of blackboard and can slide along frame slide 13, and when removing the movable writing board, remove the writing board and drive slider 1 through connecting piece 2 and move in frame slide 13, and two inner walls of frame slide 13 provide the direction for slider 1's removal.
The normal width of slider 1 is greater than the normal width of frame slide 13, makes slider 1 and frame slide 13 interference fit, and slider 1 includes slider main part 4 and the elastic component that is connected with slider main part 4, sets up the clearance of stepping down 3 between elastic component and the slider main part 4.
Wherein the elastic member is an elastic support cantilever 5.
The elastic support cantilever 5 is located on one side surface of the inner wall of the sliding block main body 4 facing the frame slide way 13, one end of the elastic support cantilever 5 is connected with the sliding block main body 4, the other end of the elastic support cantilever is a free end, an opening is formed between the free end of the elastic support cantilever 5 and the sliding block main body 4, and a yielding gap 3 exists between the elastic support cantilever 5 and the sliding block main body 4.
When installing a shell fragment formula activity blackboard pulley A in the frame slide 13 of blackboard frame 12, elastic support cantilever 5 and slider main part 4 respectively with the inner wall contact of frame slide 13, realize the interference fit of slider 1 and frame slide 13, when slider 1 moves along frame slide 13, owing to set up the clearance 3 of stepping down, make elastic support cantilever 5 receive the restriction of frame slide 13 inner wall, the atress is retrieved, because elastic support cantilever 5 is elastic material with slider main part 4 and makes, so receive the influence of elastic material performance itself, slider 1 and frame slide 13 combine closely, thereby eliminated the clearance that causes because of production technology and precision fit between slider 1 and the frame slide 13, the problem of rocking around the activity clipboard has been prevented.
In order to prevent slider 1 from assembling to frame slide 13 in, or cause the damage to elastic support cantilever 5 when frame slide 13 internal motion, set up at elastic support cantilever 5's free end and prevented bumping the device, prevent bumping the device and for the convex half circular arc transition formula that shelters from of outer formula, protect elastic support cantilever 5 through preventing bumping the device, effectively guaranteed elastic support cantilever 5's normal practicality, and then guarantee the normal practicality of a shell fragment formula activity blackboard pulley.
The elastic support cantilever 5 can be an elastic steel sheet, and the elastic steel sheet is embedded in a side face of the inner wall of the sliding block main body 4 facing the frame sliding way 13, namely the elastic support cantilever 5 and the sliding block main body 4 are processed in a split mode, and the sliding block 1 is formed after the split type processing.
In addition, when the material of the elastic supporting arm 5 is the same as that of the slider main body 4, it can be integrally formed.
This embodiment sets up the slider and is interference fit with the frame slide to set up the slider into the mode that the slider main part is connected with the elastic component, sets up the clearance of stepping down between slider main part and elastic component, guaranteed the slider on the basis of normal removal in the frame slide, prevented the normal direction of slider in the frame slide and removed, thereby solved the problem of rocking around the removal clipboard, and then prevented the production of abnormal sound.
Example 2
According to the embodiment of the utility model, an embodiment of shell fragment formula activity blackboard pulley B is disclosed, and the structure is shown in fig. 3, 7, does with the difference of the shell fragment formula activity blackboard pulley A that embodiment 1 disclosed: the slider comprises a slider body 6 and an elastic supporting cantilever 8 connected with the slider body 6, a yielding gap 7 is arranged between the slider body 6 and the elastic supporting cantilever 8, and the elastic supporting cantilever 8 is positioned on the other side surface of the slider body 6 facing the inner wall of the frame slide way 13.
Example 3
According to the embodiment of the utility model, an embodiment of shell fragment formula activity blackboard pulley C is disclosed, and the structure is shown in FIG. 4, does with the difference of the shell fragment formula activity blackboard pulley A that embodiment 1 disclosed: the slider comprises a slider body 9 and a resiliently supported suspension 11 connected to the slider body 9.
The number of the elastic support cantilevers 11 is two, the two elastic support cantilevers 11 are respectively located on two side faces, facing the inner wall of the frame slide way, of the slider main body 9, and yielding gaps 10 are respectively arranged between the two elastic support cantilevers 11 and the slider main body 9.
When the elastic sheet type movable blackboard pulley C is arranged in the frame slide way 13 of the blackboard frame 12, as shown in figure 6, two elastic supporting cantilevers 11 are respectively contacted with two inner walls of the frame slide way 13, so that the slide block is in interference fit with the frame slide way.
The suspension ends of the two elastic support cantilevers 11 are provided with anti-collision devices, so that the elastic support cantilevers 11 are protected.
Example 4
According to the embodiment of the utility model, an embodiment of shell fragment formula activity blackboard pulley is disclosed, as shown in fig. 5, be as follows with the difference of the shell fragment formula activity blackboard pulley A that embodiment 1 disclosed: the slider includes slider main part 14 and elastic component, and the elastic component is flexible post, sets up the mounting hole along the slide normal plane in the slider main part, and flexible post sets up in the mounting hole and stretches out the mounting hole and set for the distance, flexible post and slider main part respectively with two inner wall contact of frame slide, make slider and frame slide interference fit.
The method comprises the following specific steps: the slider main body 14 is provided with a mounting hole 15 along the normal surface of the slide way, the mounting hole 15 is a counter bore, the telescopic column comprises a compression spring 16 and a guide column 17 connected with one end of the compression spring, the compression spring 16 is mounted in the mounting hole 15 along the normal direction of the slider main body, the compression direction of the compression spring 16 is the same as the axial direction of the mounting hole 15, the guide column 17 extends out of the mounting hole 15 for a set distance, and the diameter of the guide column 17 is smaller than that of the mounting hole 15. After assembly, the guide post 17 can move axially in the mounting hole 15 by compressing the compression spring 16, forming a clearance 18 between the slider body and the guide post.
The guide column can be a steel ball or a steel column.
When the sliding block moves in the frame slide way, the sliding block main body 14 and the spring 16 are extruded, and due to the existence of the abdicating gap, the sliding block is tightly combined with the frame slide way, so that the gap between the sliding block and the transverse frame slide way caused by the matching of the production process and the precision is eliminated, and the problem of shaking the movable writing blackboard back and forth is prevented.
Example 5
According to the embodiment of the utility model discloses embodiment of movable blackboard, as shown in fig. 6, 7, include: the elastic sheet type movable blackboard comprises a frame, a movable writing board and the elastic sheet type movable blackboard pulley disclosed by any one of embodiments 1 to 4, wherein a frame slide way is arranged on the frame, a connecting piece of the elastic sheet type movable blackboard pulley is connected with the movable writing board, a sliding block of the elastic sheet type movable blackboard pulley is positioned in the frame slide way and can slide along the frame slide way, the sliding block and the frame slide way are in interference fit, and when the movable writing board is moved, the movable writing board drives the sliding block to move in the frame slide way through the connecting piece.
Wherein, the movable writing board is positioned at one side of the connecting piece and is riveted with the connecting piece.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A blade-ejection type movable blackboard pulley comprising: the blackboard comprises a connecting piece and a sliding block, wherein the connecting piece is used for connecting a movable writing board of the blackboard, and the sliding block is used for being arranged in a frame slide way of the blackboard and can slide along the frame slide way.
2. The blade type movable blackboard pulley according to claim 1, wherein the slider body is made of an elastic material.
3. The blade type movable blackboard roller according to claim 1, wherein the resilient member is a resilient support arm, the resilient support arm being located at the side of the slider body.
4. The roller for a flip-type blackboard according to claim 3, wherein one end of the elastic support arm is connected to the main body of the slider, and the other end of the elastic support arm is a free end, and an opening is provided between the free end of the elastic support arm and the main body of the slider, so that there is a clearance between the elastic support arm and the main body of the slider.
5. The blade spring type movable blackboard pulley according to claim 4, wherein the suspension end of the elastic support cantilever is provided with an anti-collision device.
6. The sliding block for a flip-type blackboard according to claim 3, wherein the elastic support cantilever is one, and is located on any side of the main body of the slider facing the inner wall of the slideway of the side frame; the elastic supporting cantilever and the sliding block main body are respectively contacted with two inner walls of the frame slide way, so that the sliding block is in interference fit with the frame slide way.
7. The sliding block for a flip-type blackboard according to claim 3, wherein there are two elastic supporting cantilevers, and the two elastic supporting cantilevers are respectively located on two sides of the main body of the sliding block facing the inner wall of the slideway of the side frame; the two elastic supporting cantilevers are respectively contacted with the two inner walls of the frame slide way, so that the sliding block is in interference fit with the frame slide way.
8. The blade spring type movable blackboard pulley according to claim 3, wherein the elastic support arm is integrally formed with the slider body;
or the like, or, alternatively,
the elastic support cantilever and the sliding block main body are processed in a split mode.
9. The roller of claim 1, wherein the elastic member is a telescopic post, the slider body is provided with a mounting hole along a normal surface of the slide way, the telescopic post is disposed in the mounting hole and extends out of the mounting hole for a predetermined distance, and the telescopic post and the slider body are respectively in contact with two inner walls of the frame slide way, so that the slider is in interference fit with the frame slide way.
10. A movable blackboard, comprising: the elastic sheet type movable blackboard pulley comprises a frame, a movable writing board and the elastic sheet type movable blackboard pulley according to any one of claims 1 to 9, wherein a frame slide way is arranged on the frame, a connecting piece is connected with the movable writing board, the slider is positioned in the frame slide way and can slide along the frame slide way, and the slider is in interference fit with the frame slide way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121181386.2U CN217574659U (en) | 2021-05-28 | 2021-05-28 | Spring sheet type movable blackboard pulley and movable blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121181386.2U CN217574659U (en) | 2021-05-28 | 2021-05-28 | Spring sheet type movable blackboard pulley and movable blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217574659U true CN217574659U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121181386.2U Active CN217574659U (en) | 2021-05-28 | 2021-05-28 | Spring sheet type movable blackboard pulley and movable blackboard |
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| Country | Link |
|---|---|
| CN (1) | CN217574659U (en) |
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2021
- 2021-05-28 CN CN202121181386.2U patent/CN217574659U/en active Active
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