Stroke adjusting structure of push rod motor

Abstract

The utility model discloses a stroke adjusting structure of a push rod motor, and belongs to the technical field of push rod motors. The device mainly comprises a fixed seat; the screw rod is rotationally connected with the upper end of the fixed seat; the driving motor is installed on the fixing base, and an output shaft of the driving motor is connected with the lower end of the lead screw in a meshed mode; the nut is connected to the lead screw in a meshed mode. The driving rod is arranged on the outer side of the lead screw in a sleeving mode and fixed to the upper portion of the nut; the fixing shell is arranged on the outer side of the driving rod in a sleeving mode, a sliding groove is formed in the outer side of the driving rod, an open groove is formed in the fixing shell, and the open groove corresponds to the sliding groove; the movable sleeve is connected between the driving rod and the fixed shell in a sliding manner, and a matching block is mounted on the inner wall of the movable sleeve; a fixing plate is fixedly installed on one side of the protruding block and is in threaded connection with a bolt. According to the stroke adjusting structure of the push rod motor, when the stroke of the push rod motor is adjusted, the shell and other components do not need to be taken out and disassembled, and the stroke adjusting process is convenient and rapid.

Description

Technical Field

[0001] This application relates to the technical field of push rod motors, specifically to a stroke adjustment structure of a push rod motor. Background Art

[0002] A push rod motor, also known as a linear actuator, is a power motion device that converts the rotational motion of an electric motor into the linear reciprocating motion of a push rod. It can be used as an actuating mechanism in various simple or complex technological processes to achieve remote control, centralized control, or automatic control.

[0003] However, the stroke of a push rod motor is generally fixed. When adjustment within different ranges is required, push rod motors of different models and strokes need to be selected. Therefore, a push rod motor with an adjustable stroke is needed.

[0004] After retrieval, for example, the patent with the publication number CN211624124U specifically discloses a push rod motor with a stroke adjustable function. This patent adjusts the stroke by adjusting the positions of a rectangular block and a threaded ring to change the maximum distance between the threaded ring and the limiting plate.

[0005] However, in the above patent, the stroke adjustment mechanism of the push rod motor is located inside the housing. When adjusting the stroke, components such as the housing need to be removed, which makes the stroke adjustment process rather troublesome. Therefore, it is necessary to provide a stroke adjustment structure for the push rod motor to solve the above problems.

[0006] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, it may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a stroke adjustment structure for a push rod motor, achieving the convenience and speed of the stroke adjustment process without removing components such as the housing when adjusting the stroke of the push rod motor.

[0008] The technical solution adopted by this application to solve its technical problems is: A stroke adjustment structure of a push rod motor, comprising:

[0009] A fixed seat;

[0010] A lead screw, which is rotatably connected to the upper end of the fixed seat;

[0011] A driving motor, which is installed on the fixed seat, and the output shaft of the driving motor is meshed with the lower end of the lead screw;

[0012] A nut, which is meshed with the lead screw;

[0013] The drive rod is sleeved outside the lead screw and fixed above the nut.

[0014] The fixed housing is sleeved outside the drive rod. A sliding groove is formed on the outside of the drive rod, and a slotted opening is formed on the fixed housing. The slotted opening corresponds to the sliding groove.

[0015] The movable sleeve is slidably connected between the drive rod and the fixed housing. A mating block is installed on the inner wall of the movable sleeve. The mating block is fitted and installed in the sliding groove. A convex block is installed on the outer wall of the movable sleeve. The convex block is slidably connected in the slotted opening.

[0016] One side of the convex block is fixedly installed with a fixing plate, and a bolt is threadedly connected to the fixing plate.

[0017] Further, a motor reverse switch is fixedly installed on one side end of the mating block facing the fixed seat.

[0018] Further, the lower end of the lead screw is located inside the fixed seat. The output shaft of the drive motor is arranged downward and penetrates through the upper end of the fixed seat. A second gear is fixedly installed at the lower end of the lead screw, and a first gear is fixedly installed on the output shaft of the drive motor. The first gear and the second gear are meshed and connected through a gear set.

[0019] Further, telescopic plates are fixedly installed on both sides of the convex block. The telescopic plates have arc plates fixedly installed at both ends of the slotted opening. A sliding plate is slidably connected in the arc plate. The other end of the sliding plate is slidably connected with an extension plate, and the other end of the extension plate is fixedly installed on the convex block.

[0020] Further, a baffle is fixedly installed at one end of the arc plate close to the sliding plate, and a stop block is fixedly installed at one end of the sliding plate close to the arc plate.

[0021] The beneficial effect of this application is that for the stroke adjustment structure of the push rod motor provided in this application, by setting telescopic plates and a movable sleeve, loosen the bolt, manually push the convex block to drive the movable sleeve to slide and adjust in the slotted opening and the sliding groove. After sliding to the appropriate position, then tighten the bolt. Thus, when adjusting the stroke of the push rod motor, it is not necessary to take out and remove components such as the housing, making the stroke adjustment process convenient and fast.

[0022] Moreover, when the convex block moves, the telescopic plates on both sides will expand and contract accordingly, thus protecting the slotted opening and preventing impurities or dust from entering the push rod motor and affecting the cooperation between the lead screw and the nut.

[0023] In addition to the purposes, features, and advantages described above, the present application has other purposes, features, and advantages. The following will refer to the drawings to further elaborate on the present application in detail. Description of the Drawings

[0024] The accompanying drawings forming a part of this application are used to provide a further understanding of the application. The schematic embodiments of the application and their descriptions are used to explain the application and do not constitute an improper limitation of the application.

[0025] In the drawings:

[0026] Figure 1 is the overall schematic diagram of the stroke adjustment structure of the push rod motor in the present application;

[0027] Figure 2 is Figure 1 the exploded schematic diagram of the overall structure in;

[0028] Figure 3 is Figure 2 the exploded schematic diagram of a partial structure in;

[0029] Among them, the reference numerals in the drawings are as follows:

[0030] 1, fixed seat; 11, fixed shell; 12, lead screw; 13, nut; 14, drive rod; 15, sliding groove; 16, slotted opening;

[0031] 2, telescopic plate; 21, arc plate; 22, sliding plate; 23, extension plate; 24, baffle; 25, stop block;

[0032] 3, drive motor; 31, first gear; 32, second gear;

[0033] 4, movable sleeve; 41, mating block; 42, convex block; 43, fixing plate; 44, bolt. Detailed Embodiments

[0034] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with the embodiments to elaborate on the present application in detail.

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0036] Such as Figure 1 - Figure 2As shown in the figure, the present application provides a stroke adjustment structure for a push rod motor, including a fixed seat 1. The upper end of the fixed seat 1 is rotatably connected to a lead screw 12. The lower end of the lead screw 12 is located inside the fixed seat 1. And on one side of the lead screw 12, there is a driving motor 3, which is fixed on the fixed seat 1. The output shaft of the driving motor 3 is arranged downward and penetrates through the upper end of the fixed seat 1;

[0037] At the same time, a second gear 32 is fixedly installed at the lower end of the lead screw 12, and a first gear 31 is fixedly installed on the output shaft of the driving motor 3. The first gear 31 and the second gear 32 are meshed and connected through a gear set. Therefore, starting the driving motor 3 can drive the lead screw 12 to rotate.

[0038] Moreover, a nut 13 is meshed with the lead screw 12. And a driving rod 14 is sleeved outside the lead screw 12. The driving rod 14 is fixed above the nut 13. A fixed shell 11 is also sleeved outside the driving rod 14. The fixed shell 11 is fixedly installed at the upper end of the fixed seat 1 to protect the driving rod 14 and the lead screw 12 through the fixed shell 11.

[0039] As Figure 2 - Figure 3 shown, in order to prevent the driving rod 14 from rotating, a sliding groove 15 is opened on the outside of the driving rod 14. One end of the sliding groove 15 penetrates through the bottom of the driving rod 14. And an opening groove 16 is opened on the fixed shell 11. The opening groove 16 corresponds to the sliding groove 15;

[0040] At the same time, a movable sleeve 4 is slidably connected between the driving rod 14 and the fixed shell 11. The movable sleeve 4 is sleeved on the driving rod 14. And a matching block 41 is fixedly installed on the inner wall of the movable sleeve 4. The matching block 41 is fitted and installed in the sliding groove 15. A convex block 42 is fixedly installed on the outer wall of the movable sleeve 4. The convex block 42 is slidably connected in the opening groove 16. Therefore, when the lead screw 12 rotates, the nut 13 will drive the driving rod 14 to perform a linear motion on the lead screw 12.

[0041] In the present application, a fixed plate 43 is fixedly installed on one side of the convex block 42. A bolt 44 is threadedly connected to the fixed plate 43. Therefore, by tightening the bolt 44 until it abuts against the outer wall of the fixed shell 11, the movable sleeve 4 can be fixed.

[0042] And a motor reverse switch (not shown in the figure) is fixedly installed on the side of the matching block 41 facing the fixed seat 1. Therefore, when the nut 13 drives the driving rod 14 to rise to the position of the movable sleeve 4, at this time, the motor reverse switch will be triggered, causing the driving motor 3 to reverse. So at this time, the lead screw 12 reverses to make the nut 13 drive the driving rod 14 to descend. Therefore, the stroke of the push rod motor is controlled by the movable sleeve 4 and the motor reverse switch.

[0043] When adjusting the stroke of the push rod motor, just loosen the bolt 44, manually push the convex block 42 to drive the movable sleeve 4 to slide and adjust in the slotted groove 16 and the sliding groove 15. After sliding to the appropriate position, then tighten the bolt 44. Thus, when adjusting the stroke of the push rod motor, there is no need to take out and remove components such as the housing, making the stroke adjustment process convenient and fast.

[0044] In order to protect the slotted groove 16, telescopic plates 2 are fixedly installed on both sides of the convex block 42. The telescopic plate 2 has arc plates 21 fixedly installed at both ends of the slotted groove 16. A sliding plate 22 is slidably connected in the arc plate 21. The other end of the sliding plate 22 is slidably connected with an extension plate 23. The other end of the extension plate 23 is fixedly installed on the convex block 42. Therefore, when adjusting the convex block 42, the telescopic plates 2 on both sides will expand and contract accordingly, thus protecting the slotted groove 16 and preventing impurities or dust from entering the push rod motor and affecting the cooperation between the lead screw 12 and the nut 13.

[0045] In this application, a baffle 24 is fixedly installed at one end of the arc plate 21 close to the sliding plate 22, and a stopper 25 is fixedly installed at one end of the sliding plate 22 close to the arc plate 21. Therefore, when the sliding plate 22 slides to the end of the arc plate 21, at this time, the stopper 25 will be blocked by the baffle 24 to prevent the sliding plate 22 from sliding out of the arc plate 21;

[0046] Similarly, a blocking member is also provided at the connection end of the sliding plate 22 and the extension plate 23 to prevent the extension plate 23 from sliding out of the sliding plate 22.

[0047] It should be noted that the telescopic plate 2 is also provided with multiple groups of inner plates, and the number of the inner plates can extend and contract with the movement of the movable sleeve 4.

[0048] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The stroke adjustment structure of the push rod motor is characterized by: include: Fixed seat (1); A screw rod (12), the screw rod (12) being rotatably connected to the upper end of the fixing seat (1); A drive motor (3), the drive motor (3) being mounted on the fixing seat (1), the output shaft of the drive motor (3) being meshingly connected with the lower end of the screw rod (12); A nut (13), the nut (13) being meshedly connected to the screw rod (12); A driving rod (14), the driving rod (14) being sleeved on the outside of the screw rod (12) and fixed above the nut (13); A fixed shell (11), the fixed shell (11) is sleeved on the outer side of the driving rod (14), a sliding groove (15) is provided on the outer side of the driving rod (14), and a slot (16) is provided on the fixed shell (11), and the slot (16) corresponds to the sliding groove (15); A movable sleeve (4), the movable sleeve (4) is slidably connected between the driving rod (14) and the fixed shell (11), the inner wall of the movable sleeve (4) is provided with a matching block (41), the matching block (41) is matched and installed in the sliding groove (15), and the outer wall of the movable sleeve (4) is provided with a protrusion (42), the protrusion (42) is slidably connected in the slot (16); A fixing plate (43) is fixedly mounted on one side of the protrusion (42), and a bolt (44) is threadedly connected to the fixing plate (43).

2. The stroke adjustment structure of the push rod motor according to claim 1, characterized in that: A motor reversing switch is fixedly mounted on one side end of the matching block (41) facing the fixing seat (1).

3. The stroke adjustment structure of the push rod motor according to claim 1, characterized in that: The lower end of the screw rod (12) is located inside the fixed seat (1); the output shaft of the drive motor (3) is arranged downward and passes through the upper end of the fixed seat (1); a second gear (32) is fixedly mounted on the lower end of the screw rod (12); a first gear (31) is fixedly mounted on the output shaft of the drive motor (3); and the first gear (31) and the second gear (32) are meshedly connected via a gear set.

4. The stroke adjustment structure of the push rod motor according to claim 1, characterized in that: A telescopic plate (2) is fixedly mounted on both sides of the protrusion (42), the telescopic plate (2) having an arc plate (21) fixedly mounted on both ends of the slot (16), a sliding plate (22) being slidably connected inside the arc plate (21), an extension plate (23) being slidably connected inside the other end of the sliding plate (22), and the other end of the extension plate (23) being fixedly mounted on the protrusion (42).

5. The stroke adjustment structure of the push rod motor according to claim 4, characterized in that: A baffle (24) is fixedly mounted on one end of the arc plate (21) close to the sliding plate (22), and a stopper (25) is fixedly mounted on one end of the sliding plate (22) close to the arc plate (21).

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