Controllable miniature linear push rod

Abstract

The utility model provides a controllable miniature linear push rod which comprises a shell, a driving assembly, a pushing assembly and a position meter, the driving assembly is installed on the left side in the shell, the pushing assembly is installed on the right side in the shell, the position meter is installed in the middle in the shell, and the position meter is located between the pushing assembly and the driving assembly. Compared with the prior art, the device has the advantages that the driving assembly provides driving force for the pushing assembly, the driving assembly transmits power to the pushing assembly in the transmission mode of the output gear and the transmission gear, the operation precision of the whole device is greatly improved, meanwhile, the operation direction of the pushing assembly is easy to control, and the service life of the device is prolonged. And the position meter is installed between the driving assembly and the pushing assembly, an elastic piece located on the ejector rod sleeve is in sliding connection with PCBA boards located on the main motor and the reduction gearbox, the current operation position of the ejector rod sleeve can be monitored, and the control precision of the whole device can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of linear push rods, and particularly relates to a controllable miniature linear push rod. Background Art

[0002] A linear actuator is a device that can push or pull objects in a straight line. It usually consists of a fixed housing or bracket and an internal actuator. The actuator moves through a mechanical or electric drive system. When the driving force acts on the actuator, it can move in a straight line, thereby achieving the push and pull operation of the object.

[0003] The position control accuracy of some linear actuators during movement is not high enough, which may cause the object to fail to reach the expected position during the pushing and pulling process, affecting the accuracy and stability of the operation. Some linear actuators are difficult to monitor and adjust the position of the actuator in real time, which may lead to the inability to accurately grasp the position information of the actuator, further affecting the accuracy and stability of the operation. Therefore, we hope to design a linear actuator with a new structure to solve this problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a controllable miniature linear actuator to solve the problems raised in the above background technology.

[0005] The utility model is realized by the following technical scheme: a controllable micro linear push rod, comprising: a housing, a driving component, a pushing component and a position counter, wherein the driving component is installed on the left side of the housing, the pushing component is installed on the right side of the housing, and the position counter is installed in the middle of the housing, and the position counter is located between the pushing component and the driving component;

[0006] The housing comprises an upper cover and a lower cover, the lower side of the upper cover is mounted with a lower cover by screws, the driving assembly comprises a main motor and a reduction gearbox, and the upper end of the main motor is fixed with a reduction gearbox;

[0007] The pushing component includes a push rod sleeve and a screw rod, the screw rod is threadedly connected inside the push rod sleeve, the position counter includes a bracket, a spring sheet and a PCBA board, the spring sheet is installed on the surface of the bracket close to the driving component, and the spring sheet is slidably connected to the PCBA board close to the pushing component.

[0008] As a preferred embodiment, a main shaft is installed at the upper end of the main motor, an output gear is installed at the upper end of the main shaft, and a PCBA board is installed on the surface of the main motor and the reduction gear box close to the ejector sleeve. In actual use, a spring sheet is used to slide in connection with the PCBA board, which is convenient for monitoring the current running position of the ejector sleeve and helps to improve the control accuracy of the entire device.

[0009] As a preferred embodiment, the output gear is meshed with a transmission gear, the transmission gear is installed on the upper end of the screw, and bearing 1 and bearing 2 are installed on the upper end of the screw, bearing 1 is located on the lower side of the transmission gear, and bearing 2 is located on the upper side of the transmission gear, and the screw is rotatably installed inside the upper cover and the lower cover through bearing 1 and bearing 2.

[0010] As a preferred embodiment, a sleeve head is provided at the lower end of the push rod sleeve, and a bracket is installed at the upper end of the push rod sleeve close to the driving component. The push rod sleeve is telescopically and slidably installed between the upper cover and the lower cover, and the end of the push rod sleeve with the sleeve head is movably extended to the outside and below the upper cover and the lower cover. In actual use, the driving component provides driving force for the pushing component, and also controls the running direction of the pushing component to achieve normal operation of the equipment. The driving component adopts a transmission method of output gear and transmission gear, which greatly improves the operation accuracy of the entire device.

[0011] As a preferred embodiment, a motor terminal is provided at the lower end of the main motor, and the lower end of the main motor is fixedly connected to the inner end of the control board through the motor terminal, and the outer end of the control board extends to the outside of the housing.

[0012] As a preferred embodiment, the control board is an FPC control soft board, and the part of the control board located inside the shell is electrically connected to the PCBA board.

[0013] After adopting the above technical solution, the beneficial effects of the utility model are as follows: the driving component provides driving force for the pushing component, and the driving component transmits power to the pushing component by a transmission method of an output gear and a transmission gear, which greatly improves the operation accuracy of the entire device, and at the same time, it is easy to control the operation direction of the pushing component, thereby realizing high-precision operation of the equipment;

[0014] By installing a position meter between the driving assembly and the pushing assembly, the spring piece on the ejector sleeve is slidably connected to the PCBA board on the main motor and the reduction gearbox, which can monitor the current running position of the ejector sleeve and help improve the control accuracy of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 The utility model is a schematic diagram of the overall structure of a controllable micro linear push rod.

[0017] Figure 2 The utility model is a schematic diagram of the connection between a driving component, a pushing component and a lower cover of a controllable micro linear push rod.

[0018] Figure 3 The utility model is a schematic diagram of the connection between a driving component and a pushing component of a controllable micro linear push rod.

[0019] Figure 4 The utility model is a schematic diagram of a position counter structure of a controllable micro linear push rod.

[0020] Figure 5 This is a schematic diagram of a support structure of a controllable micro linear actuator of the utility model.

[0021] Figure 6 It is a schematic diagram of a spring structure of a controllable micro linear push rod of the utility model.

[0022] Figure 7 The utility model is a schematic diagram of the working process of the electronic control part of a controllable micro linear actuator.

[0023] In the figure, 100 is a housing, 110 is an upper cover, and 120 is a lower cover;

[0024] 200-drive assembly, 210-output gear, 220-main shaft, 230-reduction gearbox, 240-main motor, 250-control board;

[0025] 300-propelling assembly, 310-rod sleeve, 311-sleeve head, 320-screw, 330-bearing 1, 340-transmission gear, 350-bearing 2;

[0026] 400-position counter, 410-bracket, 420-shrapnel, 430-PCBA board. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figures 1 to 7The utility model provides a technical solution: a controllable micro linear actuator, comprising: a housing 100, a driving assembly 200, a pushing assembly 300 and a position counter 400, wherein the driving assembly 200 is installed on the left side of the housing 100, the pushing assembly 300 is installed on the right side of the housing 100, and the position counter 400 is installed in the middle of the housing 100, and the position counter 400 is located between the pushing assembly 300 and the driving assembly 200;

[0029] The housing 100 includes an upper cover 110 and a lower cover 120. The lower cover 120 is mounted on the lower side of the upper cover 110 by screws. The driving assembly 200 includes a main motor 240 and a reduction box 230. The reduction box 230 is fixed on the upper end of the main motor 240.

[0030] The pushing assembly 300 includes a push rod sleeve 310 and a screw rod 320. The screw rod 320 is threadedly connected inside the push rod sleeve 310. The position meter 400 includes a bracket 410, a spring piece 420 and a PCBA board 430. The spring piece 420 is installed on the surface of the bracket 410 close to the driving assembly 200. The spring piece 420 is slidably connected to the PCBA board 430 close to the pushing assembly 300.

[0031] See also Figures 1 to 7 A main shaft 220 is installed on the upper end of the main motor 240, and an output gear 210 is installed on the upper end of the main shaft 220. A PCBA board 430 is installed on the surface of the main motor 240 and the reduction box 230 close to the top rod sleeve 310. In actual use, the spring piece 420 is slidably connected with the PCBA board 430 to facilitate monitoring of the current operating position of the top rod sleeve 310, which helps to improve the control accuracy of the entire device.

[0032] As the first embodiment of the utility model, according to the attached specification Figure 7, the upper control board 250 is reset and the PWM signal is added at the same time (when PWM is 0, this signal will be automatically calibrated first), the main motor 240 rotates to drive the screw 320 to make the sleeve head 311 of the top rod sleeve 310 move from the lowest point to the highest point, and then return to the lowest point, that is, the lowest point position of the sleeve head 311 of the top rod sleeve 310 (that is, the initial position). Assuming that the PWM signal is between 0-25, the stroke of the sleeve head 311 of the top rod sleeve 310 is 0-25MM, which can be indirectly understood as the stroke of the position counter 400 is also 0-25MM. When the PWM signal is adjusted upward to 1, the main motor 240 will rotate forward and synchronously drive the position counter 400 to move forward (the top rod sleeve 310 and the sleeve head 311 move forward at the same time). When the position counter 400 moves to the position of 1MM (the position counter 4 here 00 refers to the bracket 410 and the spring 420, and the PCBA board 430 is fixed on one side of the driving component 200 and does not move). The position counter 400 will feedback the signal to the main MCU at its current position. The feedback position is stopped at the 1MM position. Continue to adjust the PWM signal to 2, and repeat the action until it reaches the highest point of 25. When it is adjusted to the highest point, the PWM value can only be adjusted downward. When it is adjusted to 24 in the opposite direction, the main motor 240 will rotate in the opposite direction and also drive the position counter 400 to move in the opposite direction (the top rod sleeve 310 and the sleeve head 311 move in the opposite direction at the same time). When the position counter 400 moves to the 24MM position, the position counter 400 will feedback the signal to the main MCU at its current position, and stop at the 24MM position. Continue to adjust the PWM signal to 23, and repeat the above action until it reaches the lowest point of 0.

[0033] By installing a position meter 400 between the driving component 200 and the pushing component 300, the spring piece 420 on the top rod sleeve 310 is slidably connected to the PCBA board 430 on the main motor 240 and the reduction box 230, so that the current operating position of the top rod sleeve 310 can be monitored, which helps to improve the control accuracy of the entire device.

[0034] See also Figures 1 to 4 The output gear 210 is meshed with the transmission gear 340, and the transmission gear 340 is installed on the upper end of the screw 320. The upper end of the screw 320 is installed with a bearing 1 330 and a bearing 2 350. The bearing 1 330 is located on the lower side of the transmission gear 340, and the bearing 2 350 is located on the upper side of the transmission gear 340. The screw 320 is rotatably installed inside the upper cover 110 and the lower cover 120 through the bearing 1 330 and the bearing 2 350.

[0035] A sleeve head 311 is provided at the lower end of the top rod sleeve 310, and a bracket 410 is installed at the upper end of the top rod sleeve 310 close to the side of the driving component 200. The top rod sleeve 310 is telescopically and slidably installed between the upper cover 110 and the lower cover 120, and the end of the top rod sleeve 310 with the sleeve head 311 is movably extended to the lower part of the outside of the upper cover 110 and the lower cover 120. In actual use, the driving component 200 provides driving force for the pushing component 300, and also controls the running direction of the pushing component 300 to achieve normal operation of the equipment. The driving component 200 adopts the transmission method of the output gear 210 and the transmission gear 340, which greatly improves the operation accuracy of the entire device.

[0036] A motor terminal is disposed at the lower end of the main motor 240 , and the lower end of the main motor 240 is fixedly connected to the inner end of the control board 250 through the motor terminal, and the outer end of the control board 250 extends to the outside of the housing 100 .

[0037] The control board 250 is an FPC control soft board, and the part of the control board 250 located inside the housing 100 is electrically connected to the PCBA board 430 .

[0038] As the second embodiment of the present utility model, the driving component 200 provides driving force for the pushing component 300, and the driving component 200 adopts the transmission method of the output gear 210 and the transmission gear 340 to transmit power to the pushing component 300, which greatly improves the operation accuracy of the entire device. At the same time, it is easy to control the operation direction of the pushing component 300 and realize high-precision operation of the equipment.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A controllable micro linear actuator, comprising: A housing (100), a driving assembly (200), a pushing assembly (300) and a position counter (400), characterized in that the driving assembly (200) is installed on the left side of the housing (100), the pushing assembly (300) is installed on the right side of the housing (100), and the position counter (400) is installed in the middle of the housing (100), and the position counter (400) is located between the pushing assembly (300) and the driving assembly (200); The housing (100) comprises an upper cover (110) and a lower cover (120), the lower side of the upper cover (110) being mounted with the lower cover (120) by means of screws, the driving assembly (200) comprising a main motor (240) and a reduction gearbox (230), the upper end of the main motor (240) being fixed with the reduction gearbox (230); The pushing assembly (300) comprises a push rod sleeve (310) and a screw rod (320), wherein the screw rod (320) is threadedly connected inside the push rod sleeve (310), and the position counter (400) comprises a bracket (410), a spring sheet (420) and a PCBA board (430), wherein the spring sheet (420) is mounted on a surface of a side of the bracket (410) close to the driving assembly (200), and the spring sheet (420) is slidably connected to a side of the PCBA board (430) close to the pushing assembly (300).

2. A controllable micro linear actuator as claimed in claim 1, characterized in that: A main shaft (220) is mounted on the upper end of the main motor (240), an output gear (210) is mounted on the upper end of the main shaft (220), and a PCBA board (430) is mounted on the surface of the main motor (240) and the reduction box (230) on one side close to the top rod sleeve (310).

3. A controllable micro linear actuator as claimed in claim 2, characterized in that: The output gear (210) is meshed with a transmission gear (340), and the transmission gear (340) is mounted on the upper end of the screw rod (320). A bearing 1 (330) and a bearing 2 (350) are mounted on the upper end of the screw rod (320), and the bearing 1 (330) is located at the lower side of the transmission gear (340), and the bearing 2 (350) is located at the upper side of the transmission gear (340). The screw rod (320) is rotatably mounted inside the upper cover (110) and the lower cover (120) via the bearing 1 (330) and the bearing 2 (350).

4. A controllable micro linear actuator as claimed in claim 3, characterized in that: The lower end of the push rod sleeve (310) is provided with a sleeve head (311), and the upper end of the push rod sleeve (310) is provided with a bracket (410) on a side close to the driving assembly (200). The push rod sleeve (310) is telescopically and slidably installed between the upper cover (110) and the lower cover (120), and one end of the push rod sleeve (310) with the sleeve head (311) is movably extended to the lower part of the outer part of the upper cover (110) and the lower cover (120).

5. A controllable micro linear actuator as claimed in claim 1, characterized in that: The lower end of the main motor (240) is provided with a motor terminal, and the lower end of the main motor (240) is fixedly connected to the inner end of the control board (250) through the motor terminal, and the outer end of the control board (250) extends to the outside of the housing (100).

6. A controllable micro linear actuator as claimed in claim 5, characterized in that: The control board (250) is an FPC control soft board, and the portion of the control board (250) located inside the housing (100) is electrically connected to the PCBA board (430).

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