Electric push rod transmission structure

Abstract

The utility model provides an electric push rod transmission structure which comprises a motor and a motor output shaft, the motor output shaft is sleeved with a gear, an oil storage tank is arranged above the gear, a notch is formed in the bottom of the oil storage tank, a sealing block is arranged on the notch, the bottom of the sealing block is connected with a connecting rod, and the connecting rod penetrates out of the notch. The bottom of the connecting rod is sleeved with a mounting plate, a sponge block is arranged at the bottom of the mounting plate, parallel wedge-shaped blocks are arranged on the two sides of the sponge block, the directions of the inclined faces of the wedge-shaped blocks are consistent, an output shaft of the motor is sleeved with two oval plates, the two oval plates are arranged under the wedge-shaped blocks, and when the long axes of the oval plates are horizontal, the long axes of the oval plates are parallel. And the elliptical plate is tangent to the inclined surface of the wedge-shaped block. According to the electric push rod transmission structure, the clamping block is arranged on the side face of the connecting rod, when the oval plate jacks up the wedge-shaped block, one rotation trend brought to the connecting rod is absorbed and blocked by the clamping block, rotation of the connecting rod is effectively prevented, meanwhile, the oval plate and the wedge-shaped block replace an original round head column, and the electric push rod transmission structure is more durable and not prone to abrasion.

Description

Technical Field

[0001] This utility model relates to the field of electric linear actuator technology, specifically to an electric linear actuator transmission structure. Background Art

[0002] An electric linear actuator is an electric drive device that converts the rotary motion of an electric motor into the linear reciprocating motion of a linear actuator. It can be used as an actuator in various simple or complex processes to achieve remote control, centralized control, or automatic control.

[0003] As disclosed in CN218326060U, "An Electric Actuator" includes a main body comprising a motor body, a actuator housing, a transmission seat, a motor output shaft body, a transmission rod, a lead screw body, a lead screw sleeve, a actuator body, and a control system. The motor body can drive the motor output shaft body to rotate, and the motor output shaft body drives the transmission rod to rotate through a gear transmission component. An oil storage tank is fixedly installed inside the transmission seat, and a flow groove is opened inside the oil storage tank. This utility model, by including an oil storage tank, a sealing plug, a connecting rod, a connecting disc, a sponge column, a lubricating brush, a return spring, a first column, a second column, and a circular through hole, can lubricate the motor output shaft body and the gear transmission component in actual use through the lubrication components. From its structure, it is not difficult to see that during the continuous contact between the first and second columns, when the sealing plug is lifted, there will be a force on the first main body. This force will cause the sponge to rotate. During the repeated process, it will rotate, causing the first and second columns to misalign, thus causing the device to fail.

[0004] This case arose in order to resolve the aforementioned issues. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide an electric push rod transmission structure to solve the problems mentioned in the background art.

[0007] (2) Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an electric push rod transmission structure, comprising a motor and a motor output shaft, a gear sleeved on the motor output shaft, an oil storage tank positioned above the gear, a slot at the bottom of the oil storage tank, a sealing block on the slot, a connecting rod connected to the bottom of the sealing block, the connecting rod extending through the slot, an mounting plate sleeved on the bottom of the connecting rod, a sponge block at the bottom of the mounting plate, parallel wedge-shaped blocks on both sides of the sponge block, the inclined surfaces of the wedge-shaped blocks aligning, two elliptical plates sleeved on the motor output shaft, the two elliptical plates positioned directly below the wedge-shaped blocks, and when the major axis of the elliptical plates is horizontal, the elliptical plates are tangent to the inclined surfaces of the wedge-shaped blocks.

[0009] Preferably, the connecting rod has a snap-fit ​​block on both the side near the upper end and the side near the lower end, the groove shape is the same as the cross-section of the connecting rod with the snap-fit ​​block, and the mounting plate is sleeved on the snap-fit ​​block at the lower end of the connecting rod.

[0010] Preferably, the snap-fit ​​blocks are distributed on the upper and lower ends of the connecting rod, one on the left and one on the right. The connecting rod has a guide groove on its side, which is distributed front and back on the side of the connecting rod and is offset from the snap-fit ​​blocks.

[0011] Preferably, the mounting plate is provided with a fixing plate, the area of ​​which is larger than that of the mounting plate, and the fixing plate is provided with a sleeve, which is fitted over the connecting rod.

[0012] Preferably, a spring is provided on the fixing plate, the other end of the spring is connected to the bottom surface of the oil storage tank, and the spring is sleeved on the outside of the sleeve.

[0013] (3) Beneficial effects

[0014] After adopting the above technical solution, this utility model has the following advantages compared with the prior art: The electric push rod transmission structure of this utility model has a locking block on the side of the connecting rod, so that the rotational tendency of the connecting rod brought by the elliptical plate lifting the wedge block is absorbed and blocked by the locking block, effectively preventing the rotation of the connecting rod. At the same time, the elliptical plate and the wedge block replace the original round head column, which is more durable and less prone to wear. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram after removing the sleeve;

[0017] Figure 3 for Figure 2 A diagram showing the result after removing the fixing plate;

[0018] Figure 4 for Figure 1 A side view;

[0019] In the diagram: 1. Motor, 2. Motor output shaft, 3. Gear, 4. Oil tank, 5. Groove, 6. Sealing block, 7. Connecting rod, 8. Mounting plate, 9. Sponge block, 10. Wedge block, 11. Elliptical plate, 12. Guide groove, 13. Fixing plate, 14. Sleeve, 15. Spring, 16. Snap-fit ​​block. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] This utility model embodiment provides an electric push rod transmission structure, such as Figure 1-4 As shown, the device includes a motor 1, a motor output shaft 2, a gear 3 mounted on the motor output shaft 2, an oil reservoir 4 above the gear 3, a slot 5 at the bottom of the oil reservoir 4, a sealing block 6 on the slot 5, a connecting rod 7 connected to the bottom of the sealing block 6, the connecting rod 7 passing through the slot 5, a mounting plate 8 mounted on the bottom of the connecting rod 7, a sponge block 9 at the bottom of the mounting plate, parallel wedge blocks 10 on both sides of the sponge block 9, the inclined surfaces of the wedge blocks 10 are aligned, two elliptical plates 11 mounted on the motor output shaft 2, positioned directly below the wedge blocks 10, with the major axis of the elliptical plates 11 being horizontal, tangent to the inclined surfaces of the wedge blocks 10. The elliptical plates 11 and wedge blocks 10 replace the original round-headed column, making it more durable and less prone to wear. It should be noted that a transmission gear, lead screw, and push rod are connected and meshed below the gear 3, which is existing technology and therefore not shown or described further.

[0022] Reference Appendix Figure 1-3 The connecting rod 7 has locking blocks 16 on both the upper and lower sides. The groove 5 has the same shape as the cross-section of the connecting rod 7 with locking blocks 16. The mounting plate 8 is fitted onto the locking block 16 at the lower end of the connecting rod 7. The locking blocks 16 on the side of the connecting rod 7 absorb and block the rotational tendency of the connecting rod 7 when the elliptical plate 11 lifts the wedge block 10, effectively preventing the rotation of the connecting rod 7. The locking blocks 16 are distributed on the left and right sides of the upper and lower ends of the connecting rod 7. The connecting rod 7 has a guide groove 12 on the side. The guide groove 12 is distributed front and back on the side of the connecting rod 7 and is offset from the locking blocks 16. When the elliptical plate 11 rotates to the vertical position of its major axis, the elliptical plate 11 lifts the wedge block 10, thereby lifting the connecting rod 7. The lubricating oil in the oil tank 4 flows down along the guide groove 12.

[0023] Reference Appendix Figure 1-3The mounting plate 8 is provided with a fixing plate 13, the area of ​​which is larger than that of the mounting plate 8. The fixing plate 13 is provided with a sleeve 14, which is fitted over the connecting rod 7. The sleeve 14 effectively prevents lubricating oil from flowing out of the guide groove 12 to the motor output shaft 2 due to external factors such as vibration. The fixing plate 13 is provided with a spring 15, the other end of which is connected to the bottom surface of the oil storage tank 4. The spring 15 is fitted over the sleeve 14.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric push rod transmission structure, comprising a motor (1) and a motor output shaft (2), wherein a gear (3) is sleeved on the motor output shaft (2), an oil storage tank (4) is disposed above the gear (3), a slot (5) is provided at the bottom of the oil storage tank (4), a sealing block (6) is provided on the slot (5), a connecting rod (7) is connected to the bottom of the sealing block (6), the connecting rod (7) extends out from the slot (5), an mounting plate (8) is sleeved at the bottom of the connecting rod (7), and a sponge block (9) is provided at the bottom of the mounting plate, characterized in that: The sponge block (9) has parallel wedge blocks (10) on both sides, and the inclined surfaces of the wedge blocks (10) are in the same direction. Two elliptical plates (11) are sleeved on the motor output shaft (2). The two elliptical plates (11) are located directly below the wedge blocks (10). When the major axis of the elliptical plate (11) is horizontal, the elliptical plate (11) is tangent to the inclined surface of the wedge block (10).

2. The electric linear actuator transmission structure according to claim 1, characterized in that: The connecting rod (7) has a snap-fit ​​block (16) on both the upper and lower sides. The groove (5) has the same shape as the cross section of the connecting rod (7) with the snap-fit ​​block (16). The mounting plate (8) is fitted onto the snap-fit ​​block (16) at the lower end of the connecting rod (7).

3. The electric linear actuator transmission structure according to claim 2, characterized in that: The snap-fit ​​blocks (16) are distributed on the upper and lower ends of the connecting rod (7) in a left-right manner. The connecting rod (7) has a guide groove (12) on its side, which is distributed in a front-back manner on the side of the connecting rod (7) and is offset from the snap-fit ​​blocks (16).

4. The electric linear actuator transmission structure according to claim 1, characterized in that: The mounting plate (8) is provided with a fixing plate (13), the area of ​​the fixing plate (13) is larger than the area of ​​the mounting plate (8), and the fixing plate (13) is provided with a sleeve (14), which is sleeved on the connecting rod (7).

5. The electric push rod transmission structure according to claim 4, characterized in that: A spring (15) is provided on the fixing plate (13), and the other end of the spring (15) is connected to the bottom surface of the oil storage tank (4). The spring (15) is sleeved on the sleeve (14).

Images