CN218588506U

CN218588506U - Hand clamping prevention device for turnable learning table

Info

Publication number: CN218588506U
Application number: CN202222352689.7U
Authority: CN
Inventors: 李红奎; 周友飞
Original assignee: Readboy Education Technology Co Ltd
Current assignee: Readboy Education Technology Co Ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-03-10
Anticipated expiration: 2032-09-05

Abstract

The utility model provides a hand scheme is prevented to study table that can overturn, study table that can overturn include fixed desktop and upset desktop, and the upset desktop is through upset subassembly control and for the upset of fixed desktop, prevent that the tong device includes: the side panel is positioned on the side surface of the turnable desktop and is movably connected with the desk body; the lifting driving part is used for controlling the lifting of the side panel; and the turnover detection part is used for detecting the turnover angle or the movement trend of the turnover table top so as to feed back and control the action of the lifting driving part. The utility model discloses rely on the upset of upset desktop when reseing the adaptability of side board to go up and down, make the clearance between upset desktop and the side board can not cause the tong phenomenon, further promoted the factor of safety of the study table that can overturn, promoted user experience to more possess marketing prospect.

Description

Hand clamping prevention device for turnable learning table

Technical Field

The utility model relates to a study table technical field, in particular to hand device is prevented pressing from both sides by reversible study table.

Background

The study table is a device that children student study is used commonly, and traditional study table is fixed plane, because the restriction of its function, can't adjust desktop inclination according to user's demand. Along with the continuous development of the intelligent learning table, the functions of the learning table are more and more perfect. But set up the desktop board of an electric lift on the desktop that has intelligent study table at present, the desktop board slope rises during the use, and convenience of customers watches equipment such as flat board and drawing etc. and not the time spent descends and keep flat and pack up. However, the movable table top can easily cause hand pinching if an effective finger pinching prevention mechanism is not available.

Patent CN212325976U discloses a children study table with prevent pressing from both sides hand safety and turn over board, turns over and is equipped with flexible safety cover between board and the desktop to shelter from turning over board inner space, prevent that children's hand from stretching into, turn over the board and turn the in-process and prevent that children's hand from pressing from both sides and hindering, flexible safety cover turns over the board simultaneously and turns over horizontal position and desktop amalgamation, as turning over the buffer structure between board and the desktop gap, prevents that children's hand from pressing from both sides between board and the desktop gap and hindering. The protective rubber strip can further prevent hands of children from being pinched when the turnover plate is turned to the horizontal position and is spliced with the desktop. Due to the fact that the flexible protective cover needs to be arranged, the flexible protective cover may lose efficacy and need to be replaced in the process of deformation in long-term use, and although the protective rubber strips and other buffer structures are arranged, the flexible protective cover still can generate certain clamping contact on the hand of a user, and further improvement can be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: aiming at the defects existing in the background technology, an improved anti-pinch scheme of the turnable learning table is provided.

In order to achieve the above object, the utility model provides a tong device is put to study table can overturn, study table can overturn includes fixed desktop and upset desktop, the upset desktop through upset subassembly control and for fixed desktop upset prevents that the tong device includes:

the side panel is positioned on the side surface of the turnover table top and is movably connected with the table body;

a lifting driving part for controlling the lifting of the side panel;

and the turnover detection part is used for detecting the turnover angle or the movement trend of the turnover desktop so as to feed back and control the action of the lifting driving part.

Further, the overturn detection part comprises one or a combination of a plurality of Hall sensors, angle sensors, six-axis sensors and gyroscopes.

Further, the lifting driving part is an electric push rod.

Further, the support part for supporting the side panel is also included.

Further, the supporting part is a fixed cavity.

Further, still include the spacing portion of direction, the spacing portion of direction is used for leading the side panel, makes the side panel can only vertically go up and down, and restricts the maximum height that the side panel goes up and down.

Furthermore, soft materials are distributed on the upper edge of the side panel.

The above technical scheme of the utility model has following beneficial effect:

the utility model provides a hand clamping prevention scheme for a turnable learning table, which depends on the adaptive lifting of the side panels when the turnover table top is turned over and reset, so that the hand clamping phenomenon cannot be caused by the gap between the turnover table top and the side panels, the safety factor of the turnable learning table is further improved, and the user experience is improved, thereby having better market promotion prospect;

other advantageous effects of the present invention will be described in detail in the following detailed description.

Drawings

FIG. 1 is a schematic view of a reversible learning desk of the present invention;

FIG. 2 is a top view of the structure of the fixed cavity of the present invention;

fig. 3 is a sectional view of the middle fixed cavity structure of the present invention.

[ instruction of reference ]

1-fixing the desktop; 2-overturning the desktop; 3-overturning the assembly; 4-side panels; 5-an electric push rod; 6-guiding a limit groove; 7-a limiting block; 8-fixed cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. The various features and embodiments described in the detailed description may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and various combinations of features/embodiments are not separately described in order to avoid unnecessary repetition in the present disclosure.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed, installed and connected, or indirectly disposed and connected through intervening components and intervening structures. In addition, the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. in the present invention are based on the directions or positional relationships shown in the drawings or the conventional placement state or use state, and are only for convenience of description and simplification of description, but not for indicating or implying that the indicated structure, feature, device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the embodiment of the utility model provides a can overturn and learn to say that prevent tong device, the study table that can overturn includes fixed desktop 1 and upset desktop 2, and upset desktop 2 is controlled and is overturned for fixed desktop 1 through upset subassembly 3 to the tilt up or the decurrent rotation are kept flat and are packed up, can be used for drawing after rising, watch flat board etc. more humanized for the desktop of conventionality, and user experience is better.

Because the turnover table top 2 can clamp hands when being folded with the table body side plate in the process of turnover resetting, and the hands of users, especially children, are injured, the turnover table top is provided with a hand clamping prevention device for preventing the hands from being injured. It should be noted that, the tong is more likely to occur on the left side or the right side of the turnover table top 2 (outside of the turnover table top 2), so the tong-preventing device is also disposed on the outside of the turnover table top 2 in the present embodiment, and the occurrence of the tong accident is better avoided.

Specifically, this prevent tong device includes side board 4, and wherein, side board 4 is located the outside of the desktop that can overturn, and its side of constituteing table body structure, side board 4 and the drive of the table body swing joint of dependence lift drive portion and lift are simultaneously controlled. Therefore, when the turnover table top 2 is turned over and reset, the lifting driving part drives the side panel 4 to descend, so that after the turnover table top 2 is completely reset to be flat, an obvious gap is reserved between the turnover table top and the upper edge of the side panel 4, the phenomenon of clamping hands can not occur completely, and the injury of users, particularly hands of children, is avoided.

Naturally, in order to ensure the sealing performance, the subsequent lifting driving part drives the side panel 4 to ascend and reset, so that the side surface of the table body is sealed. Can set up the rising of switch active control side board 4, also can set up the automatic drive side board 4 of lift drive portion after the certain time and rise and reset, the in-process side board 4 that the homoenergetic ensured that upset desktop 2 overturns and resets descends, can not produce the tong with upset desktop 2.

In the present embodiment, the lifting drive section automatically controls the lifting of the side panel 4, and thus, the accidental pinching of the hand can be prevented without requiring a manual operation. Therefore, the turnover detection part is also arranged and is used for detecting the turnover angle or the movement trend of the turnover table top 2 so as to control the action of the lifting driving part by a feedback system. When the turnover detection part detects that the turnover angle of the turnover table top 2 is not large or the turnover movement trend is upward, the condition of clamping hands cannot occur, and therefore the lifting driving part cannot drive the side panel 4 to descend.

In this embodiment, the upset detection portion includes one or several kinds of combinations in hall sensor, angle sensor, six sensors, the gyroscope, can accurately detect the rotation angle and the upset trend of pivot in the upset subassembly of upset desktop 2, and then feedback control lift drive portion accomplishes lift drive or does not drive.

For example, the hall sensor is arranged corresponding to the end of the rotating shaft, the magnetic material is arranged at the end of the rotating shaft and comprises at least one N pole and at least one S pole, the magnetic field generated by the magnetic material changes when the rotating shaft rotates, and the hall sensor can detect the change of the magnetic field and output an electric signal, so that the rotating angle and the rotating trend of the rotating shaft are obtained.

It should be noted that, in this embodiment, the turnover table top 2 is turned over by being driven by the motor, and therefore, after the turnover table top 2 is turned over to the preset angle, the motor is also stopped under the control of the system, so that the turnover table top 2 is kept at the adjusted angle, and can be stably kept by means of a self-locking structure such as a worm gear and the like.

As shown in fig. 2 and 3, in the present embodiment, as a preferred embodiment, the lifting driving portion is an electric push rod 5, and the movable end of the electric push rod 5 is connected to the side panel 4 for driving the side panel 4 to lift. The electric push rod 5 is also internally provided with a motor which can stably drive the side panel 5 to lift. Of course, in other embodiments, a hydraulic rod or the like may be used for driving, and is not limited in particular here.

Because side board 4 has certain width and weight, for making side board 4 more stable lift, and keep the displacement of vertical direction, avoid blocking etc. still include the spacing portion of direction in this embodiment, the spacing portion of direction is used for leading to side board 4, makes side board 4 only can vertically go up and down, and the maximum height of restriction side board 4 lift.

Specifically, the spacing portion of direction is direction spacing groove 6 among the embodiment, and direction spacing groove 6 lays in the both sides of side board 4, with the side block of side board 4, makes side board 4 only can move along the wire spacing groove 6 of vertical layout to along vertical lift, can not take place the skew. Wherein, the top of direction spacing groove 6 is formed with stopper 7, and side panel 4 rises to the extreme position after by stopper 7 spacing, and prevents further rising of side panel 4, can not be with upset desktop 2 jack-up etc..

Certainly, structures such as guide rods can be additionally arranged, the guide rods and the electric push rods 5 are symmetrically distributed relative to the side panel 4, or two groups of electric push rods 5 are arranged for synchronous driving, so that the lifting of the side panel 4 is more stable.

In this embodiment, the side panels 4 are supported by support means, which may be fixing cavities 8 or connecting plates, preferably in the form of fixing cavities 8 (which are also a channel structure made up of a plurality of plates). Wherein, fixed appearance chamber 8 is integrative fixed with the table body, and the bottom of side panel 4 is located fixed appearance chamber 8, can hold 8 lifts for fixed appearance chamber, and the bottom of direction spacing groove 6, electric push rod 5 etc. also lay in fixed appearance chamber 8, avoid exposing outside the table body.

As a further improvement, in the present embodiment, a soft material is still disposed on the upper edge of the side panel 4, and the soft material includes, but is not limited to, silicone, plastic, fiber, and woven material. Through the setting of soft material for the side panel also can not be to the hard extrusion of hand totally when rising to reset, avoids the injury of user's hand as far as possible.

Adopt the study table that can overturn that this embodiment provided to prevent tong device, the tong phenomenon when can avoiding overturn desktop 2 to reset better has further promoted user experience. Certainly, the anti-pinch device that provides in this embodiment is also not limited to the side board 4 of upset desktop 2 outside, and the probability of the tong of this department is the highest only, and the side board of other positions also can adopt the device, is also in the protection scope of the utility model.

Example 2:

embodiment 2 provides a hand mode is prevented to study table that can overturn, on the basis of the device that embodiment 1 provided, triggers the upset incident, acquires the upset state of study table, and the upset state of upset desktop 2 promptly triggers side board 4 and descends, after the study table upset is ended, triggers side board 4 and rises to the tong when avoiding upset desktop 2 to descend.

Wherein, the overturning state of the learning table comprises the overturning direction and the overturning starting angle of (the overturning desktop 2 of) the learning table. Specifically, the turning direction of the learning table includes upward turning, downward turning and the like, the turning starting angle of the learning table may be 0 to 80 degrees and the like, and different angles correspond to different use states of the learning table, for example, 30 degrees for drawing pictures, 50 degrees for watching flat plates and the like.

Meanwhile, before the trigger side panel 4 descends, it is also confirmed that the learning table turning state reaches a condition for triggering the side panel 4 to descend, the condition including: the overturning direction of the learning table is downwards overturning, and the overturning starting angle is larger than a preset first dangerous angle threshold value. Therefore, when the overturning direction of the learning table is upwards overturning, the danger of clamping hands is not generated, and the descending condition of the side panel 4 is not met without triggering the descending of the side panel 4. Similarly, when the initial turning angle is smaller than the first preset dangerous angle threshold, it indicates that the turning tabletop 2 is turned by a small angle, for example, by less than 5 degrees, and at this time, the hand of the user cannot extend into the lower part of the turning tabletop 2, and the turning tabletop 2 is reset without hand clamping danger.

As further improvement, the study table upset state still includes study table upset back angle in this embodiment, correspondingly, the condition still includes obtains study table upset back angle, and study table upset back angle is greater than and predetermines the dangerous angle threshold value of second, does not trigger side board 4 and descends.

It should be noted that the learning table turning angle may be determined by a turning start angle and a turning back angle, for example, if the system turning command is decreased from 60 degrees to 50 degrees, the turning back angle is 50 degrees, and the turning back angle is 10 degrees. Because the angle of the turnover table top 2 after turnover is 50 degrees, the turnover table top still has obvious distance with the upper edge of the side panel 4, the danger of clamping hands can not be generated, and the side panel 4 does not need to be lowered.

As a further improvement, the user can customize the height of the side panel 4 to be lowered in this embodiment (generally, the palm is not thick, so the side panel 4 only needs to be lowered to a height that does not pinch the hand).

In addition, on the basis that the soft material is arranged on the upper edge of the side panel 4 in the embodiment 1, when the side panel 4 is triggered to ascend, whether the danger of clamping hands exists or not can be further detected in the ascending process, and the operation of preventing the clamping hands is triggered. Wherein, prevent pressing from both sides hand operation accessible installs a set of current-sensing ware additional on the motor of electricity push rod 5, is detecting the rotational speed of motor constantly by hall sensor, when side board 4 rises, in case the motor rotational speed slows down, hall sensor detects the rotational speed change this moment, will report information to the system, and the system is to the relay give-out order, and the circuit can let the electric current reverse, makes the motor stall or reversal, therefore side board 4 also stops rising or reverse decline immediately, avoids being pressed from both sides the hand.

Synthesize the study table that can overturn that

embodiment

1, 2 provided and prevent tong scheme, compare in prior art and have higher factor of safety, solved the problem of convertible study table tong better, possess the marketing prospect.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a hand device is prevented to study table can overturn, study table can overturn includes fixed desktop (1) and upset desktop (2), upset desktop (2) through upset subassembly control and for fixed desktop (1) upset, its characterized in that prevents that the hand device includes:

the side panel (4), the side panel (4) is located on the side face of the turnover table top (2), and the side panel (4) is movably connected with the table body;

a lifting drive part for controlling the lifting of the side panel (4);

the turnover detection part is used for detecting the turnover angle or the motion trend of the turnover table top (2) so as to feed back and control the action of the lifting driving part.

2. The anti-pinch device for the reversible learning table as claimed in claim 1, wherein the turnover detection portion comprises one or a combination of a hall sensor, an angle sensor, a six-axis sensor and a gyroscope.

3. The anti-pinch device for reversible learning desk as claimed in claim 1, wherein the lifting driving part is an electric push rod (5).

4. The anti-pinch device for reversible learning desk as claimed in claim 1, further comprising a support portion for supporting the side panel (4).

5. A device for preventing pinching of hands on a reversible desk as claimed in claim 4, wherein said supporting portion is a fixed compartment (8).

6. The anti-pinch device for a reversible learning table as claimed in claim 1, further comprising a guiding and limiting portion for guiding the side panel (4), so that the side panel (4) can be lifted vertically, and the maximum height of the side panel (4) can be limited.

7. The anti-pinch device for a convertible learning desk as claimed in claim 1, wherein the upper edge of the side panel (4) is provided with a soft material.