CN110811134A - Safe turnover device for table board - Google Patents

Abstract

The invention belongs to the technical field of desktop turnover equipment, and particularly relates to a safe turnover device for a desk plate, which can realize 360-degree rotation of the desk plate by taking a transverse central shaft as a circle center, ensure the double-sided usability of the desk plate, improve the utilization degree of the desk plate, and is suitable for scenes of one-desk multi-purpose or one-side writing and one-side multimedia teaching; its simple structure, convenient to use, safe controllable, the rotatory rotary switch of pressing of A hand, B hand upset, the A hand is loose, realizes safe upset, and whole in-process both hands all are in safe region, both have satisfied the multi-functional and settlement inclination demand of table, have carried out passive protection to the operator again in operation process, are applicable to the great heavier article of upset, are particularly useful for the student and overturn two sides desk or study table.

Description

Safe turnover device for table board

The technical field is as follows:

the invention belongs to the technical field of desktop overturning equipment, and particularly relates to a safe overturning device for a desk plate, which can realize 360-degree overturning and inclination of a set angle of the desk plate, prevent two hands from being in an overturning dangerous area, and enable overturning to be safe and controllable.

Background art:

when two sides desk or study table are overturned, press the switch on one hand, overturn on the other hand, the upset in-process, if the hand is put at the within range of dangerous contained angle carelessly, as shown in fig. 1, there is the potential safety hazard of being hindered by the clamp, this problem can be solved to safe turning device, for example: the hand-operated desktop turnover device disclosed in the chinese patent 201821327876.7 comprises a desktop support, a driving device, a lead screw, a hand-operated desktop turnover adjusting handle, a desktop supporting rod, a slideway and a separable threaded slider, wherein the desktop supporting rod is connected with the separable threaded slider, the separable threaded slider is placed in the slideway, the slideway is fixedly connected with the desktop support, the separable threaded slider is sleeved with the lead screw and moves along the axial direction of the lead screw, one end of the lead screw is connected with the driving device, the other end of the lead screw is connected with the desktop support, and the driving device is installed in the desktop support; a seat table turnover mechanism disclosed in chinese patent 201821374005.0 includes a turnover mechanism body and a seat, a second air spring is provided inside the turnover mechanism body, a cup holder is provided at one side of the second air spring, a cup holder switch is provided at one side of the cup holder, a clamping groove is provided on the surface of the cup holder, a table support is provided at the bottom end of the turnover mechanism body, a rotating device is provided at one side of the turnover mechanism body, a fixing plate is provided at one side of the rotating device, a first air spring and an ejector pin are provided inside the fixing plate, a guide rail is provided outside the first air spring, a labyrinth lock is provided at one side of the fixing plate, and an unlocking assembly is provided at one side of the labyrinth lock; the turning adjusting device of the lifting table disclosed in the Chinese patent 201820449763.8 comprises a supporting beam fixedly mounted on the lifting table legs, wherein supporting frames are hinged to two ends of the supporting beam, a turning adjusting device is mounted in the supporting beam, the supporting beam is of an integral structure consisting of a front side plate, a rear side plate and two control boxes, the outer walls of the outer ends of the two control boxes are correspondingly hinged to rotate and provided with a supporting frame and are symmetrically arranged, and the turning adjusting device controls the supporting frame to be adjustable and rotatable at the outer ends of the control boxes; the overturning adjusting device comprises two adjusting seat frames in two control boxes, a plurality of adjusting holes are formed in a supporting frame corresponding to each control box, adjusting rods and one ends of springs are slidably mounted at two ends of each adjusting seat frame respectively, the outer ends of the adjusting rods penetrate through the adjusting seat frames and are inserted into the adjusting holes of the corresponding supporting frames, limiting rods are arranged on the side walls of the adjusting rods in the adjusting seat frames, and the other ends of the springs are in pressure contact with the limiting rods; the inner ends of the adjusting rods of the two adjusting seat frames are respectively connected to one end of an adjusting zipper, and the adjusting zipper is controlled by an adjuster fixedly arranged on the supporting beam; the training table top turnover structure disclosed in the chinese patent 201820397514.9 comprises at least two turnover support arms connected to a training table top, wherein each turnover support arm is provided with a telescopic clamping piece, each turnover support arm is connected with a support piece, one end of each support piece is provided with a rotating shaft, the other end of each support piece is provided with a buckle capable of being matched with the clamping piece, the support pieces are rotatably connected to the turnover support arms through the rotating shafts, when the buckles are matched with the clamping pieces, the turnover support arms are connected with the support pieces, the clamping pieces are separated from the buckles after being stretched under the action of external force, and the turnover support arms turn upwards around the rotating shafts and are separated from the support pieces; the automatic turnover device for the table plate, disclosed in the Chinese patent 201710065223.X, comprises a table body and a through groove arranged on the table body, wherein a rotating shaft is arranged in the middle of the through groove, a coil spring is arranged on the inner side of the table body at two sides of the through groove, and the end part of the coil spring is connected with the rotating shaft; a cavity is arranged on the inner side of the table body at two sides of the through groove, a baffle is arranged at one end of the cavity close to the through groove, the rotating shaft is rotatably connected to the baffle, 2 table plates are arranged on the rotating shaft, and planes of the 2 table plates are mutually vertical; the side wall of the end part of the rotating shaft is provided with a pin shaft, the side wall of the table body is provided with a through hole, the inner side of the through hole is provided with a sleeve, one side of the sleeve, which is close to the edge of the table body, is provided with a button, the outer diameter of the button is smaller than the outer diameter of the sleeve, the table body is provided with an end cover, the end cover covers the through hole, the button is inserted in the middle of the end cover, the bottom of the sleeve is provided with a return spring, the inner side of the sleeve is provided with a clamping groove, the clamping groove is in a spiral structure along the length direction of the inner wall of the sleeve, the tail end of the pin shaft is inserted in the clamping groove, one end of the clamping groove, which is close to the end cover, is provided with a positioning groove, and the return spring is in a compressed state when the, the coil spring is in a stretching state; the turning device of the computer desk disclosed in the chinese patent 201220262960.1 comprises a box body, a flip cover connected with the box body through a rotating shaft, a wire hole arranged at the side of the box body, and a keyboard tray located inside the box body, wherein a lock is arranged at the inner side of the front end of the box body and connected with the top end of the flip cover through the lock, a display fixing frame is arranged at the middle part of the inner side of the flip cover, the middle parts of the two sides of the flip cover are respectively connected with one end of a gas spring, the other end of the gas spring is fixed at the inner side of the box body, the lower parts of the two sides of the flip cover are respectively connected with one end of a connecting frame, the other end of the connecting frame is; the structures of the turnover mechanism or the device in the patent products and the prior art are complex. Therefore, the table board safety turnover device with a simple structure is researched and designed, and economic and social benefits are achieved.

The invention content is as follows:

the invention aims to overcome the defects in the prior art, and seeks to design a table board safe overturning device for safely overturning a table board and avoiding an operator from being injured.

In order to achieve the purpose, the main structure of the table board safety turnover device comprises a locking rod, a rotating shaft, a base plate, a switch sleeve, a limiting column, a switch cantilever, a knob switch, a knob return spring, a turnover shaft, an upper limiting block, a switch limiting block, a lower limiting block, a spring frame and a locking return spring; one end of the locking rod is fixed on the substrate through a rotating shaft, a switch sleeve is arranged at the other end of the locking rod in a penetrating mode, the switch sleeve is clamped in the locking rod through a limiting column, a switch cantilever is arranged outside the switch sleeve, a knob switch is arranged at the top of the switch sleeve, a knob return spring is sleeved at the bottom of the switch sleeve and located above the locking rod, the knob return spring is located below the locking rod, a turnover shaft is arranged at the middle upper portion of the substrate, the tooth form of the turnover shaft is meshed with the tooth form of the locking rod, an upper limiting block and a switch limiting block are arranged at the right upper portion of the substrate, a lower limiting block and a spring frame are arranged at the right lower portion of the; when the table is used, the turnover shaft extends into the clamping groove of the table to establish a connection relation, the knob switch is clockwise rotated by 90 degrees by the hand A and then pressed, the locking rod rotates by taking the rotating shaft as a circle center, the tooth form of the locking rod is separated from the tooth form of the turnover shaft, the table is turned by the hand B, 360-degree rotation of the table is realized, and the use function and the use property of the table are switched; the hand A is loosened, the locking rod returns to the original position under the action of the locking reset spring, meanwhile, the knob switch rotates counterclockwise by 90 degrees under the action of the knob reset spring, and the switch cantilever is clamped on the switch limiting block; the locking rod is meshed with the turnover shaft through tooth shapes at different positions, so that the inclination angle of the table plate is adjusted.

The table plate safety overturning device can be applied to a tool or a clamp which is manually overturned, and can be overturned only by simultaneously operating two hands, so that one hand is prevented from being started, and the other hand is prevented from being pressed or clamped.

Compared with the prior art, the desk plate can rotate 360 degrees by taking the transverse central shaft as a circle center, the double-side usability of the desk plate is ensured, the utilization degree of the desk plate is improved, the desk plate is suitable for scenes of one desk for multiple purposes or one-side writing and one-side multimedia teaching, the desk plate can be adjusted and locked within a certain angle, the comfort requirements of different angles are met, and in the process of turning the angle, hands can be prevented from being injured when being placed at the included angle between the desk plate and the desk frame; its simple structure, convenient to use, safe controllable, the rotatory rotary switch of pressing of A hand, B hand upset, the A hand is loose, realizes safe upset, and whole in-process both hands all are in safe region, both have satisfied the multi-functional and settlement inclination demand of table, have carried out passive protection to the operator again in operation process, are applicable to the great heavier article of upset, are particularly useful for the student and overturn two sides desk or study table.

Description of the drawings:

fig. 1 is a schematic diagram of a dangerous angle position according to the background of the invention.

Fig. 2 is a schematic diagram of the main structure of the present invention.

Fig. 3 is a schematic view of the usage state of the present invention.

The specific implementation mode is as follows:

the invention is further described below by way of an embodiment example in conjunction with the accompanying drawings.

Example 1:

the main structure of the table board safety turnover device related to the embodiment comprises a locking rod 1, a rotating shaft 2, a substrate 3, a switch sleeve 4, a limiting column 5, a switch cantilever 6, a knob switch 7, a knob return spring 8, a turnover shaft 9, an upper limiting block 10, a switch limiting block 11, a lower limiting block 12, a spring frame 13 and a locking return spring 14; one end of a locking rod 1 is fixed on a substrate 3 through a rotating shaft 2, a switch sleeve 4 is arranged at the other end of the locking rod 1 in a penetrating mode, the switch sleeve 4 is clamped in the locking rod 1 through a limiting column 5, a switch cantilever 6 is arranged outside the switch sleeve 4, a knob switch 7 is arranged at the top of the switch sleeve 4, a knob return spring 8 is sleeved at the bottom of the switch sleeve 4, the switch cantilever 6 is located above the locking rod 1, the knob return spring 8 is located below the locking rod 1, a turnover shaft 9 is arranged at the middle upper portion of the substrate 3, the tooth form of the turnover shaft 9 is meshed with the tooth form of the locking rod 1, an upper limiting block 10 and a switch limiting block 11 are arranged at the right upper portion of the substrate 3, a lower limiting block 12 and a spring frame 13 are arranged at the right.

When the table board safety turnover device related to the embodiment is used, the turnover shaft 9 extends into the clamping groove of the table board 20 to establish a connection relationship, the knob switch 7 is clockwise rotated by 90 degrees by the hand A and then pressed, the locking rod 1 rotates by taking the rotating shaft 2 as a circle center, the tooth form of the locking rod 1 is separated from the tooth form of the turnover shaft 9, the table board 20 is turned by the hand B, 360-degree rotation of the table board 20 is realized, and the use function and the use property of the table board 20 are switched; the hand A is loosened, the locking rod 1 returns to the original position under the action of the locking reset spring 14, meanwhile, the knob switch 7 rotates 90 degrees anticlockwise under the action of the knob reset spring 8, the switch cantilever 6 is clamped on the switch limiting block 11, the table plate 20 cannot be turned over continuously, the two hands are prevented from being placed in a dangerous area, and the turning safety is guaranteed; the locking rod 1 and the overturning shaft 9 are meshed with each other through tooth shapes at different positions, and the inclination angle of the table plate 20 is adjusted to meet different use requirements; in the process of turning or inclining the table plate 20 by the hand B, the knob switch 7 cannot be rotated to turn the table plate 20 at will, so that the hand A can be prevented from being placed at the included angle between the table plate 20 and the table frame, fingers are prevented from being pinched, and a passive protection effect is achieved.

Claims (3)

1. A table plate safety turnover device is characterized in that a main body structure comprises a locking rod, a rotating shaft, a base plate, a switch sleeve, a limiting column, a switch cantilever, a knob switch, a knob reset spring, a turnover shaft, an upper limiting block, a switch limiting block, a lower limiting block, a spring frame and a locking reset spring; one end of the locking rod is fixed on the substrate through a rotating shaft, a switch sleeve is arranged at the other end of the locking rod in a penetrating mode, the switch sleeve is clamped in the locking rod through a limiting column, a switch cantilever is arranged outside the switch sleeve, a knob switch is arranged at the top of the switch sleeve, a knob return spring is sleeved at the bottom of the switch sleeve and located above the locking rod, the knob return spring is located below the locking rod, a turnover shaft is arranged at the middle upper portion of the substrate, the tooth profile of the turnover shaft is meshed with the tooth profile of the locking rod, an upper limiting block and a switch limiting block are arranged at the right upper portion of the substrate, a lower limiting block and a spring frame are arranged at the right lower portion of the.

2. The table board safety turnover device is characterized in that when the table board safety turnover device is used, the turnover shaft extends into the clamping groove of the table board to establish a connection relation, the knob switch is rotated by 90 degrees clockwise by the hand A and then pressed, the locking rod rotates by taking the rotating shaft as a circle center, the tooth form of the locking rod is separated from the tooth form of the turnover shaft, the table board is turned by the hand B, 360-degree rotation of the table board is achieved, and the use function and the use property of the table board are switched; the hand A is loosened, the locking rod returns to the original position under the action of the locking reset spring, meanwhile, the knob switch rotates counterclockwise by 90 degrees under the action of the knob reset spring, and the switch cantilever is clamped on the switch limiting block; the locking rod is meshed with the turnover shaft through tooth shapes at different positions, so that the inclination angle of the table plate is adjusted.

3. A table safety turning device as claimed in claims 1-2 which can be applied to a manually turned tool or fixture.

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