CN211808676U

CN211808676U - Push-pull blackboard

Info

Publication number: CN211808676U
Application number: CN201922489620.7U
Authority: CN
Inventors: 彭仕华
Original assignee: Hangzhou Maijie Education Technology Co ltd
Current assignee: Hangzhou Maijie Education Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-30
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a push-and-pull blackboard, include: the guide rail mechanism is fixedly arranged on the end face of the top end of the plate frame, each roller mechanism can be arranged on the guide rail mechanism in a sliding mode, and each roller mechanism is connected to the push-pull plate; one side of the guide rail mechanism, which is back to the plate frame, is provided with a first slide rail and a second slide rail which are arranged in parallel in opposite directions; the roller mechanism comprises at least two rollers, at least one roller can be in sliding type abutting joint with the first slide rail and is far away from the second slide rail, and at least one roller can be in sliding type abutting joint with the second slide rail and is far away from the first slide rail. The technical scheme of the utility model through all installing guide rail mechanism and gyro wheel mechanism in the terminal surface position department on sheet frame top to make at least one gyro wheel only with first slide rail looks slip butt and make at least one gyro wheel only with second slide rail looks slip butt, the card pause or pause phenomenon appears when can effectively avoiding gyro wheel mechanism to slide along guide rail mechanism, has better suitability.

Description

Push-pull blackboard

Technical Field

The utility model relates to a teaching equipment technical field especially relates to a push-and-pull blackboard.

Background

With the appearance and popularization of push-pull blackboards, most schools or tutoring mechanisms adopt push-pull blackboards to replace traditional wall-type blackboards. The existing push-pull blackboard is mainly characterized in that a double-axis guide rail and a roller set are arranged on the inner side of a plate frame, the axes of all rollers in the roller set are positioned on the same horizontal line parallel to the length direction of the guide rail, the arrangement easily causes the roller set to be blocked in the sliding process along the guide rail, and the roller set can not drive a push-pull plate to slide seriously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel push-and-pull blackboard, this push-and-pull blackboard's simple structure, easy operation also can prevent that the user from promoting the in-process of push-and-pull board card pause or pause phenomenon from appearing, has better suitability.

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

a push-pull blackboard comprising: the device comprises a plate frame, a guide rail mechanism, a push-pull plate and a plurality of roller mechanisms, wherein the guide rail mechanism is fixedly arranged on the end surface of the top end of the plate frame; a first slide rail and a second slide rail are arranged on one side, back to the plate frame, of the guide rail mechanism, the first slide rail and the second slide rail are arranged in parallel in an opposite mode, and the first slide rail and the second slide rail extend along the length direction of the plate frame; the roller mechanism comprises at least two rollers, at least one roller can be in sliding abutting joint with the first slide rail and is far away from the second slide rail, and at least one roller can be in sliding abutting joint with the second slide rail and is far away from the first slide rail.

Further, the roller mechanism includes: the first roller can be in slidable abutting joint with the first slide rail and is far away from the second slide rail, and the second roller can be in slidable abutting joint with the second slide rail and is far away from the first slide rail.

Furthermore, the roller mechanism further comprises a cover plate and a plurality of rollers, each roller penetrates through each roller in a one-to-one correspondence manner, and the rollers can rotate by taking the rollers as axes; each roller bearing is fixedly arranged on the cover plate in a penetrating mode, the cover plate and each roller wheel are arranged at intervals, and the cover plate is located on one side, back to the plate frame, of each roller wheel.

Furthermore, the symmetrical two ends of the cover plate are provided with side plate parts, and the side plate parts are perpendicular to the first slide rail and the second slide rail.

Furthermore, one side of the cover plate, which is back to the roller, is detachably provided with a fixed support leg, and two or more rollers penetrate through the fixed support leg.

Further, the roller mechanism further comprises a decorative cover, and the decorative cover is detachably arranged on the side face, back to the cover plate, of the fixed support leg.

Furthermore, two opposite ends of the guide rail mechanism are provided with limit blocks, and the limit blocks are used for limiting the sliding range of the roller mechanism.

Furthermore, the side face of the limiting block, which faces the roller mechanism, is provided with a strip-shaped convex part, and the strip-shaped convex part can abut against the end part, which faces the strip-shaped convex part, of the roller mechanism.

Further, one side of the guide rail mechanism, which faces away from the plate frame, forms a groove, and the roller mechanism can be arranged in the groove in a sliding manner.

Further, the roller is U-shaped.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the push-and-pull blackboard that provides among the above-mentioned technical scheme is through all installing guide rail mechanism and gyro wheel mechanism in the terminal surface position department on plate frame top, simultaneously, makes at least one gyro wheel in the gyro wheel mechanism only with first slide rail looks slip butt to and make at least one gyro wheel in the gyro wheel mechanism only with second slide rail looks slip butt, promptly: each gyro wheel in the gyro wheel mechanism all can only slide along any one in first slide rail and the second slide rail, can effectively avoid gyro wheel mechanism to appear the card pause phenomenon along the gliding in-process of guide rail mechanism, has better suitability.

Drawings

Fig. 1 is a schematic view of a push-pull blackboard according to an embodiment of the present invention.

Fig. 2 is an enlarged view of the area a shown in fig. 1.

Fig. 3 is an enlarged view of the region B shown in fig. 1.

FIG. 4 is a schematic top view of the push-pull blackboard shown in FIG. 1.

FIG. 5 is a schematic top view of the push-pull blackboard shown in FIG. 1.

FIG. 6 is a sectional view schematically showing a part of the push-pull blackboard shown in FIG. 1.

100. Pushing and pulling the blackboard; 10. a plate frame; 20. a guide rail mechanism; 21. a first slide rail; 22. a second slide rail; 23. a limiting block; 231. a strip-shaped convex part; 24. a groove; 30. a push-pull plate; 40. a roller mechanism; 41. a roller; 411. a first roller; 412. a second roller; 42. a cover plate; 43. a roller; 44. a side panel member; 45. a fixed leg; 46. and (6) a decorative cover.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

Referring to fig. 1 to 6, an embodiment of the present invention provides a push-pull blackboard 100, which has a simple structure and is easy to operate, and can prevent the phenomena of jamming and locking during the use process after being used for a long time.

The push-pull blackboard 100 includes: the sheet frame 10, the guide rail mechanism 20, the push-pull plate 30 and a plurality of roller mechanism 40, the guide rail mechanism 20 is fixedly installed on the side of the sheet frame 10 top, namely: the guide rail mechanism 20 is positioned outside the top edge of the plate frame 10; the push-pull plate 30 is connected with each roller mechanism 40, and each roller mechanism 40 is connected to the same side surface of the push-pull plate 30; each roller mechanism 40 is mounted on the rail mechanism 20, and each roller mechanism 40 is slidable with respect to the rail mechanism 20.

First slide rail 21 and second slide rail 22 have been seted up to one side of guide rail mechanism 20 back to sheet frame 10, set up between first slide rail 21 and the second slide rail 22 in opposite directions, and first slide rail 21 parallels with second slide rail 22 to first slide rail 21 and second slide rail 22 all extend the setting along the length direction of sheet frame 10. In addition, a groove 24 is formed on a side of the rail mechanism 20 facing away from the plate frame 10, the first slide rail 21 and the second slide rail 22 are both located at two opposite end positions on an inner side wall of the groove 24, and the roller mechanism 40 is slidably mounted in the groove 24.

The roller mechanism 40 includes at least two rollers 41, at least one roller 41 can be slidably abutted against the first slide rail 21 and away from the second slide rail 22, that is: the roller 41 abutting against the first slide rail 21 can only slide along the length direction of the first slide rail 21, and is not always in contact with the second slide rail 22 in the sliding process; at least one roller 41 can slidably abut against the second slide rail 22 and be away from the first slide rail 21, that is: the roller 41 abutting against the second slide rail 22 can only slide along the length direction of the second slide rail 22, and it is not always in contact with the first slide rail 21 during the sliding process. In addition, the roller 41 is provided in a U-shape.

It can be understood that, part of the rollers 41 in the roller mechanism 40 are only in sliding contact with the first slide rail 21, and the rest of the rollers 41 are only in sliding contact with the second slide rail 22; the axes of the rollers 41 slidably abutting against the first slide rail 21 are on the same horizontal straight line, and the axes of the rollers 41 slidably abutting against the second slide rail 22 are also on the same horizontal straight line. The arrangement that the roller 41 only slidably abuts against the first slide rail 21 and the roller 41 only slidably abuts against the second slide rail 22 exists in the roller mechanism 40 can avoid the phenomenon of jamming and deadlocking during the sliding process of the roller mechanism 40 along the guide rail mechanism 20.

Wherein, the roller mechanism 40 at least comprises: a pair of first rollers 411 and a pair of second rollers 412, the first rollers 411 can slidably abut against the first slide rail 21 and keep away from the second slide rail 22, and the second rollers 412 can slidably abut against the second slide rail 22 and keep away from the first slide rail 21. The axes of the first rollers 411 are all on the same horizontal line parallel to the first slide rail 21, and the axes of the second rollers 412 are also on the same horizontal line parallel to the second slide rail 22, that is: the straight line formed by connecting the axes of the first rollers 411 and the straight line formed by connecting the axes of the second rollers 412 are parallel to each other.

Wherein, the opposite two ends of the guide rail mechanism 20 are provided with the limiting blocks 23, namely: the two end positions of the first slide rail 21 and the second slide rail 22 are respectively provided with a limiting block 23, and the two limiting blocks 23, the first slide rail 21 and the second slide rail 22 mutually enclose to form a station for limiting the sliding range of the roller mechanism 40.

Further, a strip-shaped convex portion 231 is formed on a side surface of the stopper 23 facing the roller mechanism 40, and the strip-shaped convex portion 231 can be abutted against an end surface of the roller mechanism 40 facing the strip-shaped convex portion 231, that is: when the roller mechanism 40 slides to the leftmost end or the rightmost end of the rail mechanism 20, the roller mechanism 40 will contact with the corresponding bar-shaped protrusion 231. It can be understood that when the roller mechanism 40 abuts against the strip-shaped protrusion 231, a gap is left between the roller mechanism 40 and the stopper 23.

The roller mechanism 40 includes a cover plate 42 and a plurality of rollers 43, each roller 43 is correspondingly arranged at the axis position of each roller 41, and each roller 41 can rotate around the corresponding roller 43; each roller 43 is all fixed to wear to establish on apron 42 to the apron 42 is all worn out to the tip of each roller 43, and this apron 42 can avoid materials such as dust to fall into among the gyro wheel mechanism 40, thereby avoids appearing card pause, card phenomenon such as dead when leading to gyro wheel mechanism 40 to slide because of the dust accumulation between each gyro wheel 41.

In addition, the cover plate 42 is located on the side of each roller 41, which faces away from the plate frame 10, and the cover plate 42 and each roller 41 are arranged at intervals, that is, a gap is left between the cover plate 42 and each roller 41, so that the cover plate 42 can be prevented from being rubbed during the rotation process of the rollers 41 around the rollers 43, and the service life of the cover plate 42 can be effectively prolonged.

Wherein, the symmetrical two ends of the cover plate 42 are both provided with side plate members 44, the side plate members 44 are in sliding contact with the first slide rail 21 and the second slide rail 22, and simultaneously, the side plate members 44 are perpendicular to the first slide rail 21 and the second slide rail 22. It can be understood that the two side plate members 44 respectively located at the two ends of the cover plate 42, the first slide rail 21, the second slide rail 22 and the bottom surface of the groove 24 are mutually surrounded to form a sealed sliding station, and each roller 41 in the roller mechanism 40 is located in the sealed sliding station, so that the accumulation of external dust and other substances at the roller mechanism 40 can be prevented, and the phenomena of jamming, deadlocking and the like in the process of moving the push-pull plate 30 by a user can be effectively prevented.

It can be understood that when the roller mechanism 40 slides towards the limiting block 23, the side plate 44 can push the accumulated matters such as dust falling into the groove 24 towards the direction of the limiting block 23; meanwhile, when the side plate 44 abuts against the strip-shaped protrusion 231 at the position of the stopper 23, the dust and other substances falling into the groove 24 are also pushed into the gap left between the stopper 23 and the side plate 44, so that the user can remove the dust and other substances located between the stopper 23 and the side plate 44, and the service life of the push-pull blackboard 100 can be effectively prolonged.

Wherein, the side of the cover plate 42 opposite to the roller 41 is detachably provided with a fixed support 45, and at least two ends of the roller 43 penetrate through the fixed support 45, so that the roller mechanism 40 can move along with the movement of the fixed support 45; the push-pull plate 30 is connected to the roller mechanism 40 via the fixed legs 45, so that the user can move the push-pull plate 30 to slide the fixed legs 45 and the rollers 41 of the roller mechanism 40.

In addition, a decorative cover 46 is detachably mounted on the side of the fixed leg 45 opposite to the cover plate 42, and the decorative cover 46 is used for covering the fixed leg 45 to prevent dust and the like from falling into the position where the fixed leg 45 is connected with the push-pull plate 30, thereby achieving a decorative effect.

The sliding process of the push-pull blackboard 100 provided in the above embodiments can be detailed as follows:

the user manually pushes the push-pull plate 30 to move towards the right, and the push-pull plate 30 drives each roller 41 in the roller mechanism 40 to move towards the right along the rail mechanism 20 through the fixed leg 45, that is: the first roller 411 slides toward the right side along the first slide rail 21, and at the same time, the second roller 412 moves toward the right side along the second slide rail 22.

As can be understood, when the user manually pushes the push-pull plate 30 to move toward the left, the push-pull plate 30 drives the rollers 41 of the roller mechanism 40 to slide toward the left through the fixed legs 45, that is: the first roller 411 slides along the first slide rail 21 toward the left side, and at the same time, the second roller 412 slides along the second slide rail 22 toward the left side.

In the above-mentioned embodiment, the sliding blackboard 100 is provided, in which the rail mechanism 20 and the roller mechanism 40 are both installed at the end face position of the top end of the board frame 10, and at the same time, at least one roller 41 of the roller mechanism 40 is only slidably abutted against the first slide rail 21, and at least one roller 41 of the roller mechanism 40 is only slidably abutted against the second slide rail 22, that is: each roller 41 in the roller mechanism 40 can only slide along any one of the first slide rail 21 and the second slide rail 22, so that the phenomenon of blocking during the sliding process of the roller mechanism 40 along the guide rail mechanism 20 can be effectively avoided, and the roller mechanism has better applicability.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A push-pull blackboard, comprising: the device comprises a plate frame (10), a guide rail mechanism (20), a push-pull plate (30) and a plurality of roller mechanisms (40), wherein the guide rail mechanism (20) is fixedly arranged on the end face of the top end of the plate frame (10), each roller mechanism (40) is arranged on the guide rail mechanism (20) and can slide relative to the guide rail mechanism (20), and each roller mechanism (40) is connected to the push-pull plate (30); a first slide rail (21) and a second slide rail (22) are arranged on one side, back to the plate frame (10), of the guide rail mechanism (20), the first slide rail (21) and the second slide rail (22) are arranged in parallel in the opposite direction, and the first slide rail (21) and the second slide rail (22) extend along the length direction of the plate frame (10); the roller mechanism (40) comprises at least two rollers (41), at least one roller (41) can be in slidable contact with the first slide rail (21) and is far away from the second slide rail (22), and at least one roller (41) can be in slidable contact with the second slide rail (22) and is far away from the first slide rail (21).

2. A push-pull blackboard according to claim 1, characterised in that the roller mechanism (40) comprises: the pair of first rollers (411) and the pair of second rollers (412), the first rollers (411) can be in slidable contact with the first slide rail (21) and far away from the second slide rail (22), and the second rollers (412) can be in slidable contact with the second slide rail (22) and far away from the first slide rail (21).

3. A push-pull blackboard according to claim 1, wherein the roller mechanism (40) further includes a cover plate (42) and a plurality of rollers (43), each of the rollers (43) is disposed through each of the rollers (41) in a one-to-one correspondence, and the rollers (41) are capable of rotating about the rollers (43); each rolling shaft (43) is fixedly arranged on the cover plate (42) in a penetrating mode, the cover plate (42) and each roller (41) are arranged at intervals, and the cover plate (42) is located on one side, back to the plate frame (10), of each roller (41).

4. A push-pull blackboard according to claim 3, wherein the symmetrical two ends of the cover plate (42) are provided with side plates (44), and the side plates (44) are perpendicular to the first slide rail (21) and the second slide rail (22).

5. A push-pull blackboard according to claim 3, characterised in that the side of the cover plate (42) facing away from the roller (41) is detachably provided with a fixed foot (45), and two or more rollers (43) protrude through the fixed foot (45).

6. A push-pull blackboard according to claim 5, characterised in that the roller mechanism (40) further includes a decorative cover (46), the decorative cover (46) being detachably mounted on the side of the fixed leg (45) facing away from the cover plate (42).

7. A push-pull blackboard according to claim 1, wherein the opposite ends of the rail mechanism (20) are provided with stoppers (23), and the stoppers (23) are used to limit the sliding range of the roller mechanism (40).

8. A push-pull blackboard according to claim 7, wherein the side of the stopper (23) facing the roller mechanism (40) is formed with a bar-shaped protrusion (231), and the bar-shaped protrusion (231) can abut against the end of the roller mechanism (40) facing the bar-shaped protrusion (231).

9. A push-pull blackboard according to claim 1, characterised in that the side of the guide rail mechanism (20) facing away from the plate frame (10) forms a groove (24), the roller mechanism (40) being slidably mounted in the groove (24).

10. Push-pull blackboard according to claim 1, characterised in that the roller (41) is U-shaped.