Pinch-resistant motorized flip-top table structure

Abstract

The application discloses a kind of anti-pinch electric turnover desktop structures, with table frame and turnover desktop, turnover desktop is hinged on table frame, also with diagonal strut, column pin and control box, the upper end of diagonal strut is connected with the back of turnover desktop, electric push rod is installed on table frame, electric push rod includes shell, screw rod, screw nut and drive assembly, shell is installed on table frame, screw rod is installed in the inside of shell, screw nut is sleeved on screw rod, first sliding slot in length direction is provided on shell, second sliding slot is provided on diagonal strut, the lower end of diagonal strut is connected with screw nut by column pin sequentially passing through second sliding slot, first sliding slot, switch electrically connected with control box is provided on diagonal strut, when drive assembly drives turnover desktop to drop and meet obstacle, column pin moves along second sliding slot and triggers switch.The structure effectively prevents the risk of injury to user's fingers or clothing and other foreign matter during the rotation of the turnover desktop back to zero.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric tables, and particularly relates to a structure of an electric flip table top capable of preventing pinching. BACKGROUND

[0002] An electric table generally takes a motor as a power source, and controls a mechanical device through a control unit to adjust the height of a table leg, or to adjust the rotation angle of a table top on a plane, or to adjust the flip angle of the table top relative to a table frame, etc. In Chinese patent CN204635441U, an electric flip device for a liquid crystal display is disclosed, which has the technical features of comprising a rotating mechanism, a table body, a limiting device, a controller, a flip panel being arranged in the middle of a table top of the table body, two rotating shafts being arranged in the middle of two sides of the flip panel, rotating shaft fixing supports being arranged on the table top in correspondence with the rotating shafts, the flip panel being connected to the rotating shaft fixing supports through the rotating shafts, one of the rotating shafts of the flip panel being connected to a servo motor in correspondence, the lower surface of the flip panel being provided with a flip opening limiting switch and a flip closing limiting switch in the table body, the controller being arranged on the table body, the servo motor, the flip opening limiting switch and the flip closing limiting switch being connected to the controller, and the flip opening limiting switch and the flip closing limiting switch being arranged to correspond to the positions of the lower surface of the flip table when the flip table is completely opened and completely closed, respectively.

[0003] Although the prior art can realize the electric flip function of the flip table top, there is a risk of pinching fingers or clothes or other foreign matters of a user during the flip return process of the flip table top. SUMMARY

[0004] The present application aims to solve the technical problem of the prior art, and provides a structure of an electric flip table top capable of preventing pinching, which has high safety and can effectively prevent the risk of pinching fingers or clothes or other foreign matters of a user during the rotation return process of the flip table top to zero degrees.

[0005] The technical solution adopted by the present application to solve the technical problem is as follows: a structure of an electric flip table top capable of preventing pinching, which has a table frame and a flip table top, the flip table top being hinged to the table frame, further comprising a diagonal support rod, a column pin and a control box, the upper end of the diagonal support rod being connected to the back of the flip table top, an electric push rod being installed on the table frame, the electric push rod comprising a shell, a lead screw, a lead screw nut and a driving assembly, the shell being installed on the table frame, the lead screw being installed inside the shell, the lead screw nut being sleeved on the lead screw, a first sliding groove being arranged on the shell in the length direction, a second sliding groove being arranged on the diagonal support rod, the lower end of the diagonal support rod being connected to the lead screw nut through the column pin which is sequentially threaded through the second sliding groove and the first sliding groove, a switch being arranged on the diagonal support rod and being electrically connected to the control box, and the column pin moving along the second sliding groove and triggering the switch when the driving assembly drives the flip table top to descend and encounters an obstacle.

[0006] Further specifically, in the above technical solution, the switch is a micro switch, an infrared switch or a photoelectric switch.

[0007] Further specifically limited, the above technical solution, the anti-pinch structure is also provided with the fixed table surface on the table frame.

[0008] Further specifically limited, the above technical solution, the back of the turnover table top is also provided with a locking assembly, when the turnover table top is lowered to the target position, the lead screw nut continues to push the latch of the locking assembly to the back of the fixed table surface.

[0009] Further specifically limited, the above technical solution, the locking assembly further comprises a reset spring for resetting the latch.

[0010] Further specifically limited, the above technical solution, the number of inclined struts is two, and the two inclined struts are symmetrically distributed on the two sides of the housing.

[0011] Further specifically limited, the above technical solution, the number of first sliding grooves is two, and each of the two first sliding grooves is arranged at a position corresponding to the position of the inclined strut on the two sides of the housing along the length direction of the housing.

[0012] Further specifically limited, the above technical solution, the second sliding groove is arranged at a position close to the lower end of the inclined strut along the length direction of the inclined strut.

[0013] Further specifically limited, the above technical solution, the first sliding groove and the second sliding groove are both waist-shaped grooves.

[0014] Further specifically limited, the above technical solution, the back of the turnover table top is fixed with an inclined strut mounting seat, and the upper end of the inclined strut is mounted on the inclined strut mounting seat.

[0015] The anti-pinch electric turnover table top structure provided by the application has the following beneficial effects: the second sliding groove is arranged at a position close to the lower end of the inclined strut along the length direction of the inclined strut, and the micro switch is arranged on the inclined strut close to the lower end of the second sliding groove, so that when the turnover table top encounters foreign matter during downward turning or is turned down to the initial position, the turnover table top is fixed, the plunger is moved along the upper end of the second sliding groove to the lower end of the second sliding groove under the driving of the lead screw nut, and finally the plunger triggers the switch to control the motor to rotate reversely, effectively avoiding the risk of pinching the fingers or foreign matter such as clothes of the user during the return of the turnover table top. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments described in the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is the structural schematic view of the flip table in the present application when the flip table is flipped up;

[0018] Figure 2 is the front view of Figure 1 ;

[0019] Figure 3 is the structural schematic view of the flip table in the present application when the flip table is flipped down to zero degree;

[0020] Figure 4 is the partial enlarged view of A in Figure 3 ;

[0021] Figure 5 is the structural schematic view of the flip table in the present application when there is a foreign matter between the flip table and the fixed table;

[0022] Figure 6 is the partial enlarged view of B in Figure 5 ;

[0023] Figure 7 is the sectional view of the flip table in the present application when the flip table is flipped down to zero degree;

[0024] Figure 8 is the partial enlarged view of C in Figure 7 ;

[0025] Figure 9 is the exploded structural schematic view of the locking assembly.

[0026] The reference signs in the drawings are as follows: 1, motor; 2, fixed table; 3, flip table; 4, shell; 5, inclined support rod; 6, lead screw; 7, speed reducer; 8, pin; 9, first sliding groove; 10, second sliding groove; 11, micro switch; 12, inclined support rod mounting seat; 13, locking assembly; 14, lead screw nut; 131, latch; 132, return spring; 133, mounting seat. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of the present application, it needs to be understood that the terms "one side", "the other side", "both sides", "between", "middle", "upper end", "lower end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0029] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "arrangement", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] See Figures 1-9 The anti-pinch electric flip table top structure of the present application has a table frame and a flip table top 3, the flip table top 3 is hinged to the table frame, and also has a diagonal brace 5, a pin 8 and a control box, the upper end of the diagonal brace 5 is connected to the back of the flip table top 3, and an electric push rod is installed on the table frame, the electric push rod includes a housing 4, a lead screw 6, a lead screw nut 14 and a driving assembly, the housing 4 is installed on the table frame, the lead screw 6 is installed inside the housing 4, and the lead screw nut 14 is sleeved on the lead screw 6.

[0031] A first sliding groove 9 in the length direction is arranged on the housing 4, and a second sliding groove 10 is arranged on the diagonal brace 5, specifically, the second sliding groove 10 is arranged in the length direction of the diagonal brace 5 and at a position close to the lower end of the diagonal brace 5.

[0032] Among them, the switch is a micro switch 11. The micro switch 11 is only one way of signal detection, and the switch can also be a photoelectric switch, an infrared switch, etc.

[0033] The anti-pinch structure also has a fixed table top 2 fixed on the table frame, the flip table top 3 can also be hinged to the fixed table top 2, the electric push rod can also be installed on the fixed table top 2, and the housing 4 can also be installed on the fixed table top 2.

[0034] In order to facilitate understanding, the flip of the flip table top 3 is now defined, the flip table top 3 is hinged to the table frame or the fixed table top 2, forming a swinging relationship, when the flip table top 3 swings upward and forms a certain angle with the table frame or the fixed table top 2, it is called upward flip, and when the flip table top 3 swings downward and is flush with the table frame or the fixed table top 2, it is called downward flip.

[0035] The number of the inclined support rods 5 is two, and the two inclined support rods 5 are symmetrically distributed on the two sides of the shell 4. The number of the column pins 8 is two, and the two column pins 8 are symmetrically distributed on the two sides of the screw nut 14. The number of the first sliding grooves 9 is two, and each of the first sliding grooves 9 is arranged at the position corresponding to the inclined support rod 5 on the length direction of the shell 4 and is used for the horizontal movement of the column pin 8. The first sliding groove 9 and the second sliding groove 10 are both waist-shaped grooves. The back of the turnover table top 3 is fixed with the inclined support rod mounting seat 12, and the upper end of the inclined support rod 5 is mounted on the inclined support rod mounting seat 12.

[0036] The driving assembly comprises the motor 1 and the speed reducer 7. The first output shaft in the motor 1 is provided with a worm through a shaft coupling. The second output shaft in the speed reducer 7 is provided with a worm wheel engaged with the worm for transmission at one end, and is provided with a driving bevel gear at the other end. The screw rod 6 is provided with a driven bevel gear engaged with the driving bevel gear for rotation at one end. After the motor 1 is started, the first output shaft drives the worm to rotate through the shaft coupling. The worm drives the worm wheel to rotate through the transmission. The rotating worm wheel drives the second output shaft to rotate. The rotating second output shaft drives the driving bevel gear to rotate. The driving bevel gear drives the driven bevel gear to rotate through the transmission. Finally, the driven bevel gear drives the screw rod 6 to rotate. The micro switch 11 is connected to the control box and controls the motor 1 to rotate in the reverse direction through the signal.

[0037] The lower end of the inclined support rod 5 is connected to the screw nut 14 through the column pin 8 sequentially penetrating the second sliding groove 10 and the first sliding groove 9. A switch is arranged on the inclined support rod 5 near the lower end of the second sliding groove 10. The switch is electrically connected to the driving assembly. When the turnover table top 3 is lowered and clamped to an obstacle, the turnover table top 3 is supported by the obstacle and cannot continue to be turned down. At this time, the screw nut 14 is driven by the driving assembly to continue to move, drives the column pin 8 to move along the second sliding groove 10 and triggers the switch. The switch transmits a control signal to the control box, and then the driving assembly is turned off. That is, the switch electrically connected to the control box is arranged on the inclined support rod 5. When the driving assembly drives the turnover table top 3 to be lowered and encounters an obstacle, the column pin 8 moves along the second sliding groove 10 and triggers the switch. The switch transmits a signal to the control box, and the control box controls the motor 1 to rotate in the reverse direction.

[0038] Of course, in addition to this, the anti-pinch structure of the present application can also adopt the following structure: for example, the sliding groove can be arranged on the screw nut 14, and the column pin 8 is fixedly connected with the inclined support rod 5. After encountering resistance, the column pin 8 slides in the sliding groove of the screw nut 14.

[0039] The back of the turnover table top 3 is also provided with a locking assembly 13. The locking assembly 13 comprises a latch 131, a return spring 132 and a mounting seat 133. The mounting seat 133 is fixed on the back of the turnover table top 3 through a bolt fastener. The return spring 132 is arranged between the latch 131 and the mounting seat 133. The return spring 132 is used for resetting the latch 131.

[0040] When the flip-top table 3 is lowered to the target position, the screw nut 13 continues to move to push the latch 131 of the locking assembly 13 out to the back of the fixed table 2, that is, when the flip-top table 3 is lowered to zero, the screw nut 13 continues to move until the top pin outside the screw nut 13 touches the latch 131 of the locking assembly 13 and pushes it out to the back of the fixed table 2.

[0041] It should be noted that the lead screw 6, screw nut 14, micro switch 11, locking assembly 13, motor 1, speed reducer 7, shaft coupling, worm, worm gear, driving bevel gear and driven bevel gear are all common parts on the market, which are standard parts and can be directly purchased on the market.

[0042] See Figures 2-6 The working principle of the anti-pinch electric flip-top table structure is:

[0043] The principle of the flip-top table 3 is: the motor 1 is started to drive the lead screw 6 to rotate, the lead screw 6 rotates to drive the screw nut 14 to move to the left, the screw nut 14 moves to the left to synchronously drive the two end pins 8 to move to the left along the corresponding first sliding groove 9, at this time, the end pin 8 provides an upward thrust to the inclined support rod 5, the flip-top table 3 is raised from zero to a flipped state.

[0044] The principle of the flip-top table 3 is: the motor 1 is started to drive the lead screw 6 to rotate, the lead screw 6 rotates to drive the screw nut 14 to move to the right, the screw nut 14 moves to the right to synchronously drive the two end pins 8 to move to the right along the corresponding first sliding groove 9, since the second sliding groove 10 is arranged on the inclined support rod 5, the flip-top table 3 is always pressed at the upper edge of the second sliding groove 10 under the action of its own weight, the end pin 8 continues to move to the right along the corresponding first sliding groove 9, when the flip-top table 3 is about to become a zero-degree state, the end pin 8 twists the inclined support rod 5 upward, the end pin 8 moves from the upper end of the second sliding groove 10 to the lower end of the second sliding groove 10, and finally the end pin 8 is pressed on the moving spring leaf of the micro switch 11. When the moving spring leaf is moved to the critical point, it produces instantaneous action, so that the moving contact at the end of the moving spring leaf is quickly connected with the fixed contact. When the top pin outside the screw nut 14 touches the latch 131 of the locking assembly 13, the latch 131 is pushed out to the back of the fixed table 2, at which time the locking function of the locking assembly 13 is realized, the flip-top table 3 is locked by the locking assembly 13 when it is at zero degrees, thereby avoiding the risk of lifting the flip-top table 3, when the flip-top table 3 needs to be raised, the screw nut 14 is first moved to the left to open the locking assembly 13, and then the screw nut 14 continues to move to the left to drive the flip-top table 3 to flip.

[0045] The anti-pinch electric turnover desktop structure is provided with a second sliding groove 10 arranged at a position close to the lower end of the inclined support rod 5 along the length direction of the inclined support rod 5, and a micro switch 11 arranged on the inclined support rod 5 close to the lower end of the second sliding groove 10. When the turnover desktop 3 is returned to the critical point about to become zero degrees and encounters a foreign object, the column pin 8 moves along the upper end of the second sliding groove 10 to the lower end of the second sliding groove 10, and finally the column pin 8 triggers the micro switch 11, so that the control motor 1 reverses the rotation, effectively avoiding the risk of pinching the fingers or clothes of the user or other foreign objects during the return process of the turnover desktop 3. In addition, the locking assembly 13 cooperating with the screw nut 14 is installed on the other side of the back of the turnover desktop 3 relative to the hinged side. After the turnover desktop 3 is lowered to zero degrees, the screw nut 14 continues to move. When the external thimble of the screw nut 14 touches the latch 131 of the locking assembly 13, the latch 131 is pushed out and inserted into the back of the fixed desktop 2. At this time, the locking function of the locking assembly 13 is realized, that is, the turnover desktop 3 is locked by the locking assembly 13 when it is zero degrees, so that the turnover desktop 3 is more stable in the horizontal state, effectively avoiding the risk of lifting the plate of the turnover desktop 3.

[0046] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A pinch-proof electrically rotating desktop structure, comprising a table frame and a rotating desktop (3), wherein the rotating desktop (3) is hinged to the table frame, characterized in that: It also includes a diagonal brace (5), a pin (8), and a control box, the upper end of which is connected to the back of the flip-top table (3). An electric actuator is installed on the table frame. The electric actuator includes a housing (4), a lead screw (6), a lead screw nut (14), and a drive assembly. The housing (4) is installed on the table frame, the lead screw (6) is installed inside the housing (4), and the lead screw nut (14) is sleeved on the lead screw (6). The housing (4) is provided with a first sliding groove (9) along the length direction. The diagonal brace (5) is provided with a second sliding groove (10), and the lower end of the diagonal brace (5) is connected to the lead screw nut (14) through a pin (8) that passes through the second sliding groove (10) and the first sliding groove (9) in sequence. The diagonal brace (5) is equipped with a switch electrically connected to the control box. The switch is electrically connected to the drive assembly. When the drive assembly drives the flip tabletop (3) to descend and encounters an obstacle, the pin (8) moves along the second slide groove (10) and triggers the switch. The anti-pinch structure also has a fixed tabletop (2) fixed on the table frame. The back of the flip tabletop (3) is also equipped with a locking assembly (13). When the flip tabletop (3) descends to the target position, the screw nut (13) continues to push the pin (131) of the locking assembly (13) to the back of the fixed tabletop (2).

2. The anti-pinch electrically flipping desktop structure according to claim 1, characterized in that: The switch is a micro switch (11), an infrared switch, or a photoelectric switch.

3. The anti-pinch electrically flipping desktop structure according to claim 1, characterized in that: The locking assembly (13) also includes a return spring (132) for resetting the pin (131).

4. The anti-pinch electrically flipping desktop structure according to claim 1, characterized in that: There are two diagonal braces (5), which are symmetrically distributed on both sides of the housing (4).

5. The anti-pinch electrically flipping desktop structure according to claim 4, characterized in that: There are two first grooves (9). Each groove (9) is provided along the length of the housing (4) and at the position of the diagonal brace (5) on both sides for the horizontal movement of the pin (8).

6. The anti-pinch electrically flipping desktop structure according to claim 5, characterized in that: The second groove (10) is located along the length of the diagonal brace (5) and near the lower end of the diagonal brace (5).

7. The anti-pinch electrically flipping desktop structure according to claim 1, characterized in that: Both the first groove (9) and the second groove (10) are waist-shaped grooves.

8. The anti-pinch electrically flipping desktop structure according to claim 1, characterized in that: The back of the flip-top table (3) is fixed with a diagonal brace mounting base (12), and the upper end of the diagonal brace (5) is mounted on the diagonal brace mounting base (12).

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