CN215705339U - Movable blackboard - Google Patents
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- CN215705339U CN215705339U CN202121066195.1U CN202121066195U CN215705339U CN 215705339 U CN215705339 U CN 215705339U CN 202121066195 U CN202121066195 U CN 202121066195U CN 215705339 U CN215705339 U CN 215705339U
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Abstract
The utility model discloses a movable blackboard which comprises a frame, a fixed plate, a movable plate, a first sliding device and a second sliding device. Fixed plate fixed connection be in the frame, the fly leaf with frame swing joint, the up side and the downside of frame all are provided with first slide rail, second slide rail and the third slide rail that is parallel to each other, first slide rail is located the front side of second slide rail, first slide rail with be provided with the diversion breach between the second slide rail. The first sliding device and the second sliding device are arranged at intervals, the first sliding device comprises a first pulley and a first connecting piece, the first pulley is arranged on the first sliding rail and can move along the first sliding rail, one end of the first connecting piece is connected with the movable plate, and the other end of the first connecting piece is connected with the first pulley. The movable blackboard of the utility model is more labor-saving in use and more convenient in use.
Description
Technical Field
The utility model relates to the technical field of teaching aids, in particular to a movable blackboard.
Background
At present, in the teaching work of schools, teachers generally use movable blackboards for teaching. General movable blackboard is including fixed plate and fly leaf, and the teacher can write on the blackboard, and electronic display equipment such as TV wherein or projection curtain can hide at the back of fly leaf, when needs use electronic display equipment, can pull open the fly leaf to left and right sides, just can use the electronic display equipment behind the fly leaf, and it is very convenient to use.
Most of the current movable blackboards can only move left and right, so that the movable plates and the fixed plates are not on the same plane, and the writing continuity is poor. Even some movable blackboards can slide left and right after moving back and forth, the movable blackboards can be reset only by pressing down the movable blackboards with hands when the movable blackboards are reset, which means that the movable blackboards need to be forced to move back and forth in the using process, and the movable blackboards are troublesome to use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve one or more technical problems in the prior art and provides a movable blackboard which can be automatically reset without forcibly pressing down the movable plate when the movable plate is reset, is more labor-saving and more convenient to use.
The solution of the utility model for solving the technical problem is as follows:
a movable blackboard is provided, which comprises a frame, a fixed plate, a movable plate, a first sliding device and a second sliding device.
Fixed plate fixed connection be in the frame, the fly leaf with frame swing joint, the up side and the downside of frame all are provided with first slide rail, second slide rail and the third slide rail that is parallel to each other, first slide rail is located the front side of second slide rail, first slide rail with be provided with the diversion breach between the second slide rail.
The first sliding device and the second sliding device are arranged at intervals, the first sliding device comprises a first pulley and a first connecting piece, the first pulley is arranged on the first sliding rail and can move along the first sliding rail, one end of the first connecting piece is connected with the movable plate, and the other end of the first connecting piece is connected with the first pulley.
The second slider includes second connecting piece, first connecting piece that slides, second connecting piece and second elastic component that slides, the second connecting piece that slides is established first slide rail just can be followed first slide rail removes, the one end of second connecting piece with the fly leaf is connected, the other end of second connecting piece with the second connecting piece that slides is connected, first connecting piece that slides sets up third slide rail just can be followed the third slide rail removes, the one end of second elastic component with first connecting piece that slides is connected, the other end of second elastic component with the second connecting piece that slides is connected.
The direction-changing notch comprises a first notch and a second notch, the first notch is provided with an auxiliary direction-changing structure used for guiding the first pulley to the second slide rail, and when the first pulley is located on the second slide rail, the second sliding connecting piece is located on the second notch and can move back and forth.
The utility model has at least the following beneficial effects: when the electronic display equipment behind the blackboard is not needed, the movable plate and the fixed plate are positioned on the same plane, the second sliding device is positioned at the second notch, and the first sliding device is positioned at the auxiliary direction changing structure; when the electronic display device is needed to be used, one end of the movable plate close to the second sliding device is firstly pulled up, then the movable plate slides towards the outer side, the first sliding device slides to the first sliding rail from the second sliding rail under the help of the auxiliary turning structure, and the other end of the movable plate is pushed out, so that a user can completely pull out the movable plate by pulling up one end of the movable plate; after the use, slide the fly leaf to the inboard again, when first slider slided to first breach department, slide to the second slide rail from first slide rail under the help of supplementary diversion structure, and when second slider slided to the second breach, from first slide rail promoted the second slide rail under the effect of second elastic component, whole fly leaf just returns the normal position, consequently the user only needs the slip fly leaf, need not press the fly leaf, the fly leaf just can oneself return the normal position, compare with current movable blackboard, a action of pushing back has been saved, and is more laborsaving, and it is also more convenient to use.
As a further improvement of the above technical solution, the first sliding device further includes a first elastic member, a first connection block, a first connection rod, a first bearing wheel, and a first limiting wheel, the first pulley is connected to the first connection block, the first connection block is connected to the first connection member, the first connection rod penetrates through the first connection block, the first limiting wheel is disposed on the third slide rail and can move along the third slide rail, one end of the first connection rod is connected to the first limiting wheel, the other end of the first connection rod is connected to the first bearing wheel, one end of the first elastic member is connected to the first connection block, and the other end of the first elastic member is connected to the first bearing wheel.
When the movable blackboard is in a normal closed state, the first pulley is located at the second slide rail, the first limiting wheel is located at the third slide rail, the first elastic part is in a compressed state at the moment, the first pulley tightly supports the auxiliary turning structure, the movable plate is tightly attached to the frame, when the movable blackboard is required to be used, the movable plate is pulled leftwards or rightwards, when the first pulley moves to the first notch along the auxiliary turning structure, the elastic force generated by compression of the first elastic part pushes the first pulley to the first slide rail from the second slide rail, so that one end of the movable plate is pushed forwards, and a user only needs to pull the other end to complete forward pushing work of the whole movable plate.
As a further improvement of the above technical solution, a contact surface between the auxiliary direction changing structure and the first pulley is disposed in an inclined manner with the first slide rail, so that the first pulley can be easily changed between the first slide rail and the second slide rail.
As a further improvement of the technical scheme, the first elastic piece and the second elastic piece are both springs and have good elasticity.
As a further improvement of the above technical solution, the cross sections of the first connecting member and the second connecting member are both L-shaped, so that the first connecting member and the second connecting member are more stably connected to the movable plate.
As a further improvement of the above technical solution, a first connection hole is formed in one end of the first connection member connected to the movable plate, a screw penetrates through the first connection hole to fix the first connection member to the movable plate, a second connection hole is formed in one end of the second connection member connected to the movable plate, and the screw penetrates through the second connection hole to fix the second connection member to the movable plate, so that the connection is more stable.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a second slide apparatus according to an embodiment of the present invention, showing a compressed spring;
fig. 3 is a schematic structural view of a spring of the second sliding apparatus according to the embodiment of the present invention in a normal state;
FIG. 4 is a schematic structural view of a first sliding apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic view showing an installation position of the sliding apparatus according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of the first slide rail, the second slide rail and the third slide rail according to the embodiment of the utility model.
In the figure, 1, a frame; 2. a fixing plate; 3. a movable plate; 41. a first sliding device; 411. a first connecting member; 412. a first connection block; 413. a first pulley; 42. a second sliding device; 421. a second connecting member; 422. a second connecting block; 423. a second pulley; 51. a first slide rail; 52. a second slide rail; 53. a third slide rail; 61. a first connecting rod; 62. a first limit wheel; 63. a first elastic member; 64. a first supporting wheel; 71. a second connecting rod; 72. a second limiting wheel; 73. a second elastic member; 74. a second supporting wheel; 8. a first notch; 9. a second notch; 10. an auxiliary direction changing structure.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.
Referring to fig. 1 to 6, a movable blackboard includes a frame 1, a fixed plate 2, a movable plate 3, a first sliding device 41, and a second sliding device 42.
Because the number of the movable plates 3 and the number of the fixed plates 2 of the conventional movable blackboard are both two, the movable blackboard is designed on the basis of the conventional movable blackboard, the number of the movable plates 3 and the number of the fixed plates 2 of the movable blackboard are both two, the central axis of the whole movable blackboard is taken as a symmetry axis, and the components on the fixed plates 2 and the movable plates 3 are symmetrically arranged.
In some other embodiments, the number of the fixed plates 2 may be two, the number of the movable plates 3 is one, the fixed plates 2 are fixedly connected to two ends of the frame 1, the movable plates 3 are movably connected to the frame 1, the movable plates 3 are located between the fixed plates 2, the movable plates 3 can move left or right, and the arrangement of the other components can be adaptively adjusted based on the arrangement of the embodiment.
Besides, in some other embodiments, the number of the fixed plates 2 may be one, the number of the movable plates 3 is more than one, the fixed plates 2 are fixedly connected to one end of the frame 1, the movable plates 3 are movably connected to the frame 1, the movable plates 3 can move in the same direction as the fixed plates 2, and the arrangement of the other components can be adaptively adjusted based on the arrangement of the embodiment.
In the present embodiment, the movable blackboard of the present invention has two main forms. The first is a closed state, namely when the electronic display equipment behind the back of the blackboard is not needed, the movable plate 3 and the fixed plate 2 are positioned on the same plane, and a user can write on the blackboard conventionally; the second is an open state, namely when the electronic display device behind the back of the blackboard is needed, the user pulls the movable plate 3 to the left and right sides, at this time, the movable plate 3 and the fixed plate 2 are not in the same plane, the movable plate 3 is on the fixed plate 2, the electronic display device is located between the two fixed plates 2, and the user uses the electronic display device for teaching.
In this embodiment, the fixed plates 2 are fixedly connected to two ends of the frame 1, the movable plate 3 is movably connected to the frame 1, the movable plate 3 is located between the fixed plates 2, the upper side and the lower side of the frame 1 are respectively provided with a first slide rail 51, a second slide rail 52 and a third slide rail 53 which are parallel to each other, the first slide rail 51 is located at the front side of the second slide rail 52, and a turning notch is provided between the first slide rail 51 and the second slide rail 52.
More specifically, the upper side and the lower side of the frame 1 are both provided with convex edges which are arranged in parallel from left to right along the frame 1, and the first slide rail 51, the second slide rail 52 and the third slide rail 53 are formed by grooves formed among the convex edges.
In the present embodiment, the first sliding device 41 and the second sliding device 42 are disposed at an interval, and more specifically, taking the left fixed plate 2 and the left movable plate 3 as an example, the first sliding device 41 is disposed on the movable plate 3 and located at the edge position near the right side on the left movable plate 3, the second sliding device 42 is disposed on the movable plate 3 and located at the edge position near the left side on the left movable plate 3, that is, the second sliding device 42 is closer to the side of the frame 1 as a whole, and the first sliding device 41 is closer to the central axis of the whole blackboard.
In the present embodiment, the first sliding device 41 includes a first pulley 413 and a first connecting member 411, the first pulley 413 is disposed on the first sliding rail 51 and can move along the first sliding rail 51, one end of the first connecting member 411 is connected to the movable plate 3, and the other end of the first connecting member 411 is connected to the first pulley 413.
More specifically, the first sliding device 41 further includes a first elastic member 63, a first connecting block 412, a first connecting rod 61, a first supporting wheel 64 and a first limiting wheel 62, the first pulley 413 is connected to the first connecting block 412, the first connecting block 412 is connected to the first connecting member 411, a through hole is formed in the first connecting block 412 along the front-back direction, the first connecting rod 61 passes through the through hole and is movably connected to the first connecting block 412 and can move back and forth, the first limiting wheel 62 is disposed on the third slide rail 53 and can move along the third slide rail 53, one end of the first connecting rod 61 is connected to the first limiting wheel 62, the other end of the first connecting rod 61 is connected to the first supporting wheel 64, one end of the first elastic member 63 is connected to the first connecting block 412, and the other end of the first elastic member 63 is connected to the first supporting wheel 64.
More specifically, the first elastic member 63 is a spring, which is sleeved on the first connecting rod 61, one end of the spring is connected with the first connecting block 412, and the other end of the spring is connected with the first supporting wheel 64.
In this embodiment, the second sliding device 42 includes a second connecting member 421, a first sliding connecting member, a second sliding connecting member and a second elastic member 73, the second sliding connecting member is disposed on the first slide rail 51 and can move along the first slide rail 51, one end of the second connecting member 421 is connected to the movable plate 3, the other end of the second connecting member 421 is connected to the second sliding connecting member, the first sliding connecting member is disposed on the third slide rail 53 and can move along the third slide rail 53, one end of the second elastic member 73 is connected to the first sliding connecting member, and the other end of the second elastic member 73 is connected to the second sliding connecting member.
In this embodiment, the first sliding connection member is a second limiting wheel 72, and the second limiting wheel 72 is disposed on the third slide rail 53 and can move along the third slide rail 53.
In this embodiment, the second sliding connection piece includes a second connection rod 71, a second connection block 422, a second pulley 423 and a second supporting wheel 74, the second pulley 423 is connected with the second connection block 422, the second connection block 422 is connected with a second connection piece 421, a through hole is formed in the second connection block 422 along the front-back direction, the second connection rod 71 passes through the through hole and is movably connected with the second connection block 422 and can move back and forth, one end of the second connection rod 71 is connected with the second limiting wheel 72, the other end of the second connection rod 71 is connected with the second supporting wheel 74, one end of the second elastic member 73 is connected with the second connection block 422, and the other end of the second elastic member 73 is connected with the second limiting wheel 72.
More specifically, the second elastic member 73 is a spring, the spring is sleeved on the second connecting rod 71, one end of the spring is connected with the second connecting block 422, and the other end of the spring is connected with the second limiting wheel 72.
In this embodiment, the direction-changing notch includes a first notch 8 and a second notch 9, an auxiliary direction-changing structure 10 for guiding the first pulley 413 to the second slide rail 52 is disposed at the first notch 8, and when the first pulley 413 is located on the second slide rail 52, the second sliding connection member is located at the second notch 9 and can move back and forth.
In the present embodiment, the contact surface between the auxiliary direction changing structure 10 and the first pulley 413 is inclined with respect to the first slide rail 51, so that the first pulley 413 can be easily changed between the first slide rail 51 and the second slide rail 52.
More specifically, the auxiliary direction changing structure 10 is an aluminum alloy plate with an appearance similar to an isosceles triangle or an isosceles trapezoid, the auxiliary direction changing structure 10 is disposed between a first slide rail 51 and a second slide rail 52, a bottom edge of the auxiliary direction changing structure 10 is connected with the first slide rail 51, specifically, a side edge of the first slide rail 51 close to the front end of the blackboard, two waist edges of the auxiliary direction changing structure 10 are disposed between the first slide rail 51 and the second slide rail 52, a top or a top edge of the auxiliary direction changing structure 10 is connected with the second slide rail 52, specifically, a side edge of the second slide rail 52 close to the rear end of the blackboard, in addition, two waist edges of the auxiliary direction changing structure 10 are provided with a clamping position, when the blackboard is in a closed state, the first pulley is just positioned on the clamping position, the position limit is simple, and the first pulley can be pulled out of the position limit without too much force when the movable plate is pulled open.
In this embodiment, the cross section of the first connecting member 411 and the second connecting member 421 is L-shaped, the right angle of the L-shaped structure is attached to the right angle of the movable plate 3, one right-angled edge of the L-shaped structure is connected to the movable plate 3, and the other right-angled edge of the L-shaped structure is connected to the first connecting block 412 or the second connecting block 422, so that the first connecting member 411 and the second connecting member 421 are more stably connected to the movable plate 3.
In this embodiment, a first connection hole is formed at an end of the first connection member 411 connected to the movable plate 3, a screw is used to pass through the first connection hole to fix the first connection member 411 to the movable plate 3, a second connection hole is formed at an end of the second connection member 421 connected to the movable plate 3, and the screw is used to pass through the second connection hole to fix the second connection member 421 to the movable plate 3, so that the connection is more stable.
In the present embodiment, a handle is provided on the movable plate 3, more specifically, the handle is provided at the lower side edge portion of the movable plate 3 and close to the second connecting member 421.
The main working principle of this embodiment is:
when the movable blackboard is in a closed state, the first sliding device 41 is positioned at the first notch 8, and the second sliding device 42 is positioned at the second notch 9; wherein, the first elastic member 63 is in a compressed state, and the elastic force generated by the first elastic member 63 pushes the first pulley 413 on the second slide rail 52, so that the first pulley 413 abuts against the waist of the auxiliary direction changing structure 10; at this time, the second elastic member 73 is in a relaxed state, and the second pulley 423 is also located on the second slide rail 52.
When the movable blackboard needs to be switched from the closed state to the open state, taking the left side plate 3 as an example, the user holds the handle to pull the left side portion of the left side plate 3 to the front of the blackboard, so as to pull the second pulley 423 from the second slide rail 52 to the first slide rail 51 at the second notch 9, and then pull the left side plate 3 to the left, at this time, the second pulley 423 slides on the first slide rail 51, and the first pulley 413 slides to the first slide rail 51 along the waist edge of the auxiliary direction changing structure 10 under the thrust of the first elastic member 63, so as to push up the right side portion of the left side plate 3, and further pull the whole movable plate 3 to the upper side of the fixed plate 2, so as to switch the movable blackboard from the closed state to the open state, so as to expose the electronic display device, at this time, the first elastic member 63 is in the relaxed state, and the second elastic member 73 is in the compressed state, the second elastic element 73 pushes the second guide wheel against the partition between the first slide rail 51 and the second slide rail 52.
When the movable blackboard needs to be switched from the open state to the closed state, taking the left side plate 3 as an example, the left side plate 3 is pushed rightwards by holding the handle, the first pulley 413 is pushed by a human hand to move from the first slide rail 51 to the second slide rail 52 along the waist edge of the auxiliary direction changing structure 10, so as to push the right side edge of the left side plate 3 back to the original position, and when the second sliding device 42 slides to the second notch 9, the second pulley 423 is pushed from the first slide rail 51 to the second slide rail 52 by the thrust generated by the second elastic member 73, so as to push the left side edge of the left side plate 3 back to the original position, and then the whole movable plate 3 is pushed back, so that the movable plate 3 and the fixed plate 2 return to the same plane again, and the pushing back process does not need to be pressed down by a human hand, which is more labor-saving.
While the preferred embodiments of the present invention have been described in detail, it is to be understood that the utility model is not limited to the precise embodiments, and that various equivalent changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (6)
1. A movable blackboard, its characterized in that: comprises a frame, a fixed plate, a movable plate, a first sliding device and a second sliding device;
the fixed plate is fixedly connected in the frame, the movable plate is movably connected with the frame, the upper side surface and the lower side surface of the frame are respectively provided with a first sliding rail, a second sliding rail and a third sliding rail which are parallel to each other, the first sliding rail is positioned on the front side of the second sliding rail, and a turning notch is formed between the first sliding rail and the second sliding rail;
the first sliding device and the second sliding device are arranged at intervals, the first sliding device comprises a first pulley and a first connecting piece, the first pulley is arranged on the first sliding rail and can move along the first sliding rail, one end of the first connecting piece is connected with the movable plate, and the other end of the first connecting piece is connected with the first pulley;
the second sliding device comprises a second connecting piece, a first sliding connecting piece, a second sliding connecting piece and a second elastic piece, the second sliding connecting piece is arranged on the first slide rail and can move along the first slide rail, one end of the second connecting piece is connected with the movable plate, the other end of the second connecting piece is connected with the second sliding connecting piece, the first sliding connecting piece is arranged on the third slide rail and can move along the third slide rail, one end of the second elastic piece is connected with the first sliding connecting piece, and the other end of the second elastic piece is connected with the second sliding connecting piece;
the direction-changing notch comprises a first notch and a second notch, the first notch is provided with an auxiliary direction-changing structure used for guiding the first pulley to the second slide rail, and when the first pulley is located on the second slide rail, the second sliding connecting piece is located on the second notch and can move back and forth.
2. The movable blackboard according to claim 1, wherein: the first sliding device further comprises a first elastic piece, a first connecting block, a first connecting rod, a first bearing wheel and a first limiting wheel, the first pulley is connected with the first connecting block, the first connecting block is connected with the first connecting piece, the first connecting rod penetrates through the first connecting block, the first limiting wheel is arranged on a third sliding rail and can be moved along the third sliding rail, one end of the first connecting rod is connected with the first limiting wheel, the other end of the first connecting rod is connected with the first bearing wheel, one end of the first elastic piece is connected with the first connecting block, and the other end of the first elastic piece is connected with the first bearing wheel.
3. The movable blackboard according to claim 2, wherein: the contact surface between the auxiliary turning structure and the first pulley and the first sliding rail are obliquely arranged.
4. The movable blackboard according to claim 3, wherein: the first elastic piece and the second elastic piece are both springs.
5. The movable blackboard according to claim 4, wherein: the cross sections of the first connecting piece and the second connecting piece are L-shaped.
6. The movable blackboard according to claim 5, wherein: one end of the first connecting piece, which is connected with the movable plate, is provided with a first connecting hole, and one end of the second connecting piece, which is connected with the movable plate, is provided with a second connecting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121066195.1U CN215705339U (en) | 2021-05-18 | 2021-05-18 | Movable blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121066195.1U CN215705339U (en) | 2021-05-18 | 2021-05-18 | Movable blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215705339U true CN215705339U (en) | 2022-02-01 |
Family
ID=80031991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121066195.1U Active CN215705339U (en) | 2021-05-18 | 2021-05-18 | Movable blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215705339U (en) |
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2021
- 2021-05-18 CN CN202121066195.1U patent/CN215705339U/en active Active
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