Electric push rod module with stable control

Abstract

The utility model relates to the technical field of electric push rods, in particular to an electric push rod module with stable control. Comprising a frame body, a first transmission assembly arranged on the frame body, a second transmission assembly parallel to the first transmission assembly, a double-shaft motor in driving connection with the first transmission assembly and the second transmission assembly, a first transmission end movably arranged on the first transmission assembly and a second transmission end movably arranged on the second transmission assembly. A first worm is arranged at the end, close to the first transmission assembly, of the double-shaft motor, a second worm is arranged at the end, close to the second transmission assembly, of the double-shaft motor, the first transmission assembly is provided with a first worm gear meshed with the first worm, and the second transmission assembly is provided with a second worm gear meshed with the second worm. A worm and gear structure with a position self-locking characteristic is adopted, high transmission precision is achieved, good transmission controllability and intelligent controllability are achieved, the use safety performance is improved, and the user experience feeling is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric push rod technical field especially relates to a control stable electric push rod module. BACKGROUND

[0002] Electric push rod module is a kind of mechanical device that the rotary motion of motor is converted into linear reciprocating motion, its main function is that motor drives push rod to do linear motion through transmission mechanism, to complete push and pull action, most electric push rod modules adopt modular design, it is convenient for user to select suitable module combination use according to actual demand, such as linear type, return type, platform type etc., therefore be widely used in industrial automation, medical equipment, household appliance etc. When electric push rod module is applied to the backrest of electric seat up and down lifting, different degrees of wear failure are caused due to long time work, to cause the connection between sliding part and lifting component to be disconnected in the process of up and down lifting, it will cause the emergence of adverse conditions such as sharp drop of lifting component, reduce use safety performance, affect user experience. SUMMARY

[0003] The utility model discloses to the deficiency of prior art, provide a control stable electric push rod module, adopt the worm and gear structure with the position self-locking characteristic, realize high transmission accuracy, have good transmission controllability and intelligent control property, improve use safety performance, optimize user experience.

[0004] To realize the above-mentioned purpose, a control stable electric push rod module of the utility model, including frame body, the first transmission assembly of setting in frame body, the second transmission assembly of being provided with parallel with first transmission assembly, the double-shaft motor of being drivenly connected with first transmission assembly, second transmission assembly, the first transmission end of being movably arranged in first transmission assembly and the second transmission end of being movably arranged in second transmission assembly, the first worm is provided with to the one end of double-shaft motor close to first transmission assembly, the second worm is provided with to the one end of double-shaft motor close to second transmission assembly, first transmission assembly is provided with the first worm wheel of being engaged with first worm, second transmission assembly is provided with the second worm wheel of being engaged with second worm.

[0005] Preferably, the first transmission assembly includes a first end cover and a first left half shell and a first right half shell disposed on the first end cover. The frame body is provided with a first accommodating groove. The first accommodating groove is provided with a first partition column. The first left half shell and the first right half shell are inserted and accommodated in the first accommodating groove, so that the first partition column separates the first left half shell and the first right half shell to form a first sliding channel. The first transmission end is provided with a first sliding seat in sliding connection with the first sliding channel.

[0006] Preferably, the first end cover is provided with a first bearing, the first bearing is connected with a first screw rod, the first screw rod is connected with a first worm wheel, the first sliding seat is provided with a first internal thread, and the first sliding seat is threadedly connected with the first screw rod through the first internal thread.

[0007] Preferably, the first right half shell is provided with a support rod, and two ends of the support rod are respectively provided with a first limit switch and a second limit switch.

[0008] Preferably, the second transmission assembly comprises a second end cover and a second left half shell and a second right half shell arranged on the second end cover, the frame body is provided with a second accommodating groove, the second accommodating groove is provided with a second partition column, the second left half shell and the second right half shell are inserted and accommodated in the second accommodating groove, so that the second partition column separates the second left half shell and the second right half shell to form a second sliding channel, and the second transmission end is provided with a second sliding seat in sliding connection with the second sliding channel.

[0009] Preferably, the second end cover is provided with a second bearing, the second bearing is connected with a second screw rod, the second screw rod is connected with a second worm wheel, the second sliding seat is provided with a second internal thread, and the second sliding seat is threadedly connected with the second screw rod through the second internal thread.

[0010] Preferably, the double-shaft motor is provided with a power line.

[0011] The utility model discloses the beneficial effect has: adopt the worm and gear structure with the position self -locking characteristic, realize high transmission precision, have good transmission controllability and intelligent control nature, improve use safety performance, optimize user experience feeling. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the structural diagram of the utility model.

[0013] Fig. 2 It is the exploded view of the utility model.

[0014] Fig. 3 It is the frame body structure diagram of the utility model.

[0015] The reference signs include:

[0016] 1 - first transmission assembly 11 - first transmission end 12 - first worm wheel

[0017] 13 - first end cover 14 - first left half shell 15 - first right half shell

[0018] 16 - first sliding channel 17 - first sliding seat 18 - first bearing

[0019] 19 - first screw 110 - first internal thread 111 - support rod

[0020] 112 - first limit switch 113 - second limit switch

[0021] 2 - second transmission assembly 21 - second transmission end 22 - second worm wheel

[0022] 23 - second end cover 24 - second left half shell 25 - second right half shell

[0023] 26 - second sliding channel 27 - second sliding seat 28 - second bearing

[0024] 29 - second screw 210 - second internal thread

[0025] 3 - frame 31 - first accommodating groove 32 - first partition column

[0026] 33 - second accommodating groove 34 - second partition column

[0027] 4 - double-shaft motor 41 - first worm 42 - second worm

[0028] 43 - power cord. DETAILED DESCRIPTION

[0029] The utility model is described in detail below in combination with the drawings.

[0030] As Figs. 1 to 3 shown, the utility model discloses a control stable electric push rod module, including frame 3, set up in the first transmission assembly 1 of frame 3, with the parallel setting of first transmission assembly 1 second transmission assembly 2, with the drive connection of first transmission assembly 1, second transmission assembly 2 double-shaft motor 4, the first transmission end 11 of first transmission assembly 1 and the second transmission end 21 of second transmission assembly 2 are set up, the first worm 41 is set up to the one end of double-shaft motor 4 near first transmission assembly 1, the second worm 42 is set up to the one end of double-shaft motor 4 near second transmission assembly 2, the first transmission assembly 1 is provided with the first worm wheel 12 of first worm 41 engagement, second transmission assembly 2 is provided with the second worm wheel 22 of second worm 42 engagement.

[0031] The application is applied to the backrest of an electric seat, and the biggest difference between the double-shaft motor 4 and a traditional motor is that the double-shaft motor 4 has two output shafts. The double-shaft motor 4 is mainly installed at the position of the electric seat, and the two motor shafts drive the first worm 41 and the second worm 42 to rotate, thereby generating driving force. Since the first worm 41 is engaged with the first worm wheel 12, and the second worm 42 is engaged with the second worm wheel 22, the carrying capacity is high. When the lead angle of the worm is less than the equivalent friction angle between the meshing teeth, the worm wheel will not rotate by itself, realizing the self-locking function. Then, the first worm wheel 12 drives the first transmission end 11 to move, and the second worm wheel 22 drives the first transmission end 11 to move. Since the first transmission end 11 and the second transmission end 21 are connected with the backrest, the electric push rod module drives the backrest to make up and down lifting action, the position adjustment precision is high, the frame 3 is blocked by the first transmission end 11 and the second transmission end 21, which helps to mechanically limit the movement stroke of the first transmission end 11 and the second transmission end 21, improves the working safety performance. Since the double-shaft motor 4 is prior art, it will not be described here. The worm and gear structure with the position self-locking characteristic is adopted, high transmission precision is realized, good transmission controllability and intelligent control performance are achieved, the use safety performance is improved, and the user experience is optimized.

[0032] The first transmission assembly 1 of the embodiment includes a first end cover 13 and a first left half shell 14 and a first right half shell 15 arranged on the first end cover 13. The frame 3 is provided with a first accommodating groove 31, and the first accommodating groove 31 is provided with a first partition column 32. The first left half shell 14 and the first right half shell 15 are inserted and accommodated in the first accommodating groove 31, so that the first partition column 32 separates the first left half shell 14 and the first right half shell 15 to form a first sliding channel 16. The first transmission end 11 is provided with a first sliding seat 17 which is in sliding connection with the first sliding channel 16. Specifically, the first left half shell 14 and the first right half shell 15 are inserted in the first accommodating groove 31, so that the first partition column 32 separates the first left half shell 14 and the first right half shell 15 to form the first sliding channel 16, thereby helping the first transmission end 11 to directionally slide along the first sliding channel 16 through the first sliding seat 17, and the guiding performance is good and the movement is smooth and smooth.

[0033] The first end cover 13 of the embodiment is provided with a first bearing 18, the first bearing 18 is connected with a first screw rod 19, the first screw rod 19 is connected with the first worm wheel 12, the first sliding seat 17 is provided with a first internal thread 110, and the first sliding seat 17 is threadedly connected with the first screw rod 19 through the first internal thread 110. Specifically, the first bearing 18 is sleeved outside the first screw rod 19, effectively supports the first screw rod 19, ensures that the first screw rod 19 can rotate stably, reduces the frictional resistance of the first screw rod 19 in the rotating process, thereby improving the operation efficiency and prolonging the service life, the first sliding seat 17 is threadedly connected with the first screw rod 19 through the first internal thread 110, converts the rotary motion into the linear motion, and is widely applied to the screw transmission structure which needs to transmit motion or power.

[0034] The first right half shell 15 of the embodiment is provided with a support rod 111, and the two ends of the support rod 111 are respectively provided with a first limit switch 112 and a second limit switch 113. Specifically, the two ends of the support rod 111 are respectively provided with the first limit switch 112 and the second limit switch 113, when the first transmission end 11 slides along the first sliding channel 16 through the first sliding seat 17, the first sliding seat 17 presses the normally closed contact of the first limit switch 112, the first limit switch 112 is immediately disconnected, so that the double-shaft motor 4 stops working, and the first sliding seat 17 presses the normally closed contact of the second limit switch 113, the second limit switch 113 is immediately disconnected, so that the double-shaft motor 4 stops working, thereby effectively avoiding damage of the first transmission end 11 caused by excessive movement.

[0035] The second transmission assembly 2 of the embodiment includes a second end cover 23 and a second left half shell 24 and a second right half shell 25 provided on the second end cover 23, the frame body 3 is provided with a second containing groove 33, the second containing groove 33 is provided with a second partition column 34, the second left half shell 24 and the second right half shell 25 are inserted and contained in the second containing groove 33, so that the second partition column 34 separates the second left half shell 24 and the second right half shell 25 to form a second sliding channel 26, and the second transmission end 21 is provided with a second sliding seat 27 which is slidingly connected with the second sliding channel 26. Specifically, the second left half shell 24 and the second right half shell 25 are inserted in the second containing groove 33, so that the second partition column 34 separates the second left half shell 24 and the second right half shell 25 to form the second sliding channel 26, thereby helping the second transmission end 21 to slide along the second sliding channel 26 through the second sliding seat 27, the guiding performance is good, and the movement is smooth and smooth.

[0036] The second end cover 23 of the embodiment is provided with a second bearing 28, the second bearing 28 is connected with a second screw rod 29, the second screw rod 29 is connected with the second worm wheel 22, the second sliding seat 27 is provided with a second internal thread 210, and the second sliding seat 27 is screwed with the second screw rod 29 through the second internal thread 210. Specifically, the second bearing 28 is sleeved on the outer side of the second screw rod 29, effectively supports the second screw rod 29, ensures that the second screw rod 29 can rotate stably, reduces the frictional resistance of the second screw rod 29 in the rotating process, thereby improving the operation efficiency and prolonging the service life, the second sliding seat 27 is screwed with the second screw rod 29 through the second internal thread 210, converts the rotary motion into the linear motion, and is widely applied to the screw transmission structure which needs to transmit the motion or power.

[0037] The double-shaft motor 4 of the embodiment is provided with a power line 43. Specifically, the double-shaft motor 4 is connected with the power supply outside through the power line 43, and the normal operation of the double-shaft motor 4 is ensured.

[0038] The above is only the preferred embodiment of the utility model, for the ordinary skilled in the art, according to the thought of the utility model, the specific implementation and the application range will have the change, and the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A control-stable electric push rod module, characterized in that: The rack body, the first transmission assembly arranged on the rack body, the second transmission assembly arranged in parallel with the first transmission assembly, the double-shaft motor drivingly connected with the first transmission assembly and the second transmission assembly, the first transmission end movably arranged on the first transmission assembly, and the second transmission end movably arranged on the second transmission assembly, one end of the double-shaft motor close to the first transmission assembly is provided with a first worm, one end of the double-shaft motor close to the second transmission assembly is provided with a second worm, the first transmission assembly is provided with a first worm wheel engaged with the first worm, and the second transmission assembly is provided with a second worm wheel engaged with the second worm.

2. A control-stable electric trolley module according to claim 1, characterized in that: The first transmission assembly comprises a first end cover, a first left half shell and a first right half shell arranged on the first end cover, the rack body is provided with a first accommodating groove, the first accommodating groove is provided with a first partition column, the first left half shell and the first right half shell are inserted and accommodated in the first accommodating groove, so that the first partition column separates the first left half shell and the first right half shell to form a first sliding channel, and the first transmission end is provided with a first sliding seat in sliding connection with the first sliding channel.

3. A control-stable electric trolley module according to claim 2, characterized in that: The first end cover is provided with a first bearing, the first bearing is connected with a first screw rod, the first screw rod is connected with the first worm wheel, the first sliding seat is provided with a first internal thread, and the first sliding seat is threadedly connected with the first screw rod through the first internal thread.

4. The control-stable electric trolley module according to claim 2, wherein: The first right half shell is provided with a support rod, and the support rod is provided with a first limit switch and a second limit switch at both ends respectively.

5. The control-stable electric trolley module of claim 1, wherein: The second transmission assembly comprises a second end cover, a second left half shell and a second right half shell arranged on the second end cover, the rack body is provided with a second accommodating groove, the second accommodating groove is provided with a second partition column, the second left half shell and the second right half shell are inserted and accommodated in the second accommodating groove, so that the second partition column separates the second left half shell and the second right half shell to form a second sliding channel, and the second transmission end is provided with a second sliding seat in sliding connection with the second sliding channel.

6. A control-stable electric trolley module according to claim 5, characterized in that: The second end cover is provided with a second bearing, the second bearing is connected with a second screw rod, the second screw rod is connected with the second worm wheel, the second sliding seat is provided with a second internal thread, and the second sliding seat is threadedly connected with the second screw rod through the second internal thread.

7. The control-stable electric trolley module of claim 1, wherein: The double-shaft motor is provided with a power line.

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