Shell structure of electric push rod

Abstract

The utility model relates to the technical field of electric push rods, in particular to a shell structure of an electric push rod, which comprises a base, an end shell arranged above the base, an outer shell arranged above the end shell, two groups of reinforcing ribs arranged inside the outer shell, and a clamping assembly arranged inside one end, close to the outer shell, of each reinforcing rib. The outer shell and the reinforcing rib are clamped through a clamping assembly, the other end of the reinforcing rib is slidably mounted on the inner shell, and a push rod mounting space is formed in the inner shell; according to the electric push rod, through the arrangement of the reinforcing ribs, the structural strength of the outer shell is enhanced, the overall stability and durability of the electric push rod are improved, the reinforcing ribs and the outer shell can be stably connected through the uniquely designed clamping assemblies, meanwhile, the outer shell can be independently detached, and when the outer shell is damaged, the outer shell can be conveniently detached. The electric push rod does not need to be integrally replaced, and only the outer shell needs to be independently disassembled and replaced, so that the replacement cost is reduced, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric linear actuator technology, specifically to a housing structure for an electric linear actuator. Background Technology

[0002] An electric linear actuator is an electrically driven device that converts the rotary motion of an electric motor into the linear reciprocating motion of a linear actuator. Its housing structure, as a key supporting part of the entire device, bears the important responsibility of protecting internal components and ensuring the stable operation of the linear actuator. The housing structure of the electric linear actuator is an indispensable and important component. It not only protects the internal components but also affects the overall performance and service life of the electric linear actuator. When designing and manufacturing electric linear actuators, it is necessary to fully consider factors such as the selection of materials, structural design, and manufacturing process of the housing structure to ensure the stability and reliability of the electric linear actuator.

[0003] A search revealed that Chinese utility model patent CN219164337U discloses an outer tube housing structure for an electric push rod, including an outer shell with a circular cross-section and an inner tube with a hexagonal cross-section. The six sides of the inner tube are fixedly connected to the inner wall of the outer shell through connecting ribs. The connecting ribs are thickened on the side where they connect to the outer shell to form a thickened part, and a fixing connection hole is provided on the thickened part. The fixing connection hole is arranged along the length direction of the outer shell. It adopts a double tube structure, which makes the structure more stable and robust, with higher structural strength and better impact resistance.

[0004] However, in actual use, the reinforcing ribs are fixedly installed on the inner and outer shells. When the outer shell is damaged, the entire device needs to be replaced, which increases the cost of replacement. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a housing structure for an electric push rod, which can effectively solve the problem that the housing cannot be disassembled separately in the existing technology, resulting in increased replacement costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a housing structure for an electric push rod, including a base, an end shell above the base, an outer shell above the end shell, a reinforcing rib inside the outer shell, two sets of reinforcing ribs, a snap-fit ​​component inside one end of the reinforcing rib near the outer shell, the outer shell and the reinforcing rib being snapped together by the snap-fit ​​component, the other end of the reinforcing rib being slidably mounted on an inner housing, and the inner housing having a push rod mounting space.

[0008] Furthermore, a first fixing hole is provided on the surface of the outer shell, and a second fixing hole is provided in connection with the first fixing hole.

[0009] Furthermore, a second fixing hole is provided on the surface of the reinforcing rib near the outer shell, and two sets of slots are provided inside the reinforcing rib, with a locking block engaged in the slot.

[0010] Furthermore, the snap-fit ​​assembly includes a bearing fixedly installed inside the reinforcing rib, a V-shaped elastic plate is sleeved on the middle section surface of the bearing, and a snap-fit ​​block is provided at both ends of the V-shaped elastic plate, the snap-fit ​​block being slidably connected to the inner wall of the reinforcing rib.

[0011] Furthermore, a cavity is provided between the legs of the reinforcing rib.

[0012] Furthermore, the surface of the reinforcing rib has multiple sets of connecting holes, and adjacent sets of reinforcing ribs are connected by a connecting shaft thread.

[0013] Furthermore, a support plate is fixedly connected to the lower end surface of the reinforcing rib, and the support plate is slidably connected to the inner shell.

[0014] Furthermore, multiple sets of screw holes are provided on both the upper and lower surfaces of the end shell, and a top cover is provided on the upper end of the end shell. Bolts are threaded into the screw holes, and the bolts pass through the top cover and the base.

[0015] Beneficial effects

[0016] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0017] I. By adding reinforcing ribs, this utility model not only enhances the structural strength of the outer shell and improves the overall stability and durability of the electric push rod, but also achieves independent detachability of the outer shell by designing a unique snap-fit ​​component, which allows for a secure connection between the reinforcing ribs and the outer shell. When the outer shell is damaged, it is not necessary to replace the entire electric push rod; only the outer shell needs to be disassembled and replaced, thereby reducing replacement costs and improving maintenance efficiency.

[0018] II. By setting reinforcing ribs inside the outer shell and using a connecting shaft to thread two adjacent sets of reinforcing ribs, the overall structural stability of the electric push rod is enhanced. This not only improves the load-bearing capacity of the electric push rod, but also enables it to maintain better stability and durability when facing external impacts or vibrations.

[0019] Third, the electric actuator housing structure of this utility model is reasonably designed, and the maintenance and replacement process is simple and quick. Through the threaded connection of bolts and screw holes, the end shell, top cover and other parts can be easily disassembled and replaced. When the outer shell needs to be replaced, the snap-fit ​​relationship of the snap-fit ​​component can be released by simple tool operation, so as to realize the quick disassembly of the outer shell. This not only saves maintenance time, but also reduces maintenance difficulty, making the maintenance of electric actuators more convenient and efficient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the housing structure of an electric push rod proposed in this utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the outer shell of this utility model;

[0023] Figure 3 This is a schematic diagram of the reinforcing rib structure of this utility model;

[0024] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0025] Figure 5 This is an exploded view of the structure of this utility model.

[0026] Reference numerals: 1. Base; 2. End shell; 3. Outer shell; 4. Inner shell; 5. Push rod mounting space; 6. Reinforcing rib; 7. Cavity; 8. Connecting hole; 9. Top cover; 10. First fixing hole; 11. Connecting shaft; 12. Support plate; 13. Second fixing hole; 14. Bearing; 15. V-shaped elastic plate; 16. Locking block; 17. Locking groove; 18. Bolt; 19. Screw hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] The present invention will be further described below with reference to the embodiments.

[0029] A housing structure for an electric linear actuator, see attached figure. Figures 1-5 The device includes a base 1, an end shell 2 above the base 1, and an outer shell 3 above the end shell 2. The inner surface of the outer shell 3 contains two sets of reinforcing ribs 6. A first fixing hole 10 is provided on the surface of the outer shell 3, and a second fixing hole 13 is connected to the first fixing hole 10. When installing the reinforcing rib 6, adjusting the first fixing hole 10 and the second fixing hole 13 to be coaxial allows for continued positioning of the reinforcing rib 6. A snap-fit ​​component is provided inside the end of the reinforcing rib 6 near the outer shell 3, and the outer shell 3 and the reinforcing rib 6 are snapped together by the snap-fit ​​component. The second fixing hole 13 is provided on the surface of the reinforcing rib 6 near the outer shell 3. The reinforcing rib 6 has two sets of slots 17 inside, and the slots 17 are engaged with the locking blocks 16. The engagement between the locking blocks 16 and the slots 17 facilitates the limiting and support of the reinforcing rib 6. The engagement assembly includes a bearing 14 fixedly installed inside the reinforcing rib 6. A V-shaped elastic plate 15 is sleeved on the middle section surface of the bearing 14. Both ends of the V-shaped elastic plate 15 are provided with locking blocks 16. The locking blocks 16 are slidably connected to the inner wall of the reinforcing rib 6. The radii of the two ends of the bearing 14 are smaller than the radius of the middle section, which facilitates the removal of the V-shaped elastic plate 15 later. The other end of the reinforcing rib 6 is slidably installed on the inner shell 4. The inner shell 4 has a push rod installation space 5.

[0030] A cavity 7 is provided between the legs of the reinforcing rib 6, and the cavity 7 between the legs of the reinforcing rib 6 is used for the installation of the upper part of the electric push rod.

[0031] Multiple sets of connecting holes 8 are provided on the surface of the reinforcing rib 6. Adjacent sets of reinforcing ribs 6 are threadedly connected by connecting shafts 11. The threaded connection of the two sets of reinforcing ribs 6 by connecting shafts 11 can increase the stability of the reinforcing rib 6 and prevent the reinforcing rib 6 from sliding with the inner shell 4 when the outer shell 3 is damaged. This will not affect the reinforcing rib's continued reinforcement of the device structure. A support plate 12 is fixedly connected to the lower end surface of the reinforcing rib 6. The support plate 12 is slidably connected with the inner shell 4. The support plate 12 at the lower end of the reinforcing rib 6 is used to increase the sliding friction between the reinforcing rib 6 and the inner shell 4, preventing the reinforcing rib 6 from directly sliding down and damaging the internal parts of the device when the outer shell 3 is replaced.

[0032] Multiple sets of screw holes 19 are provided on the upper and lower surfaces of the end shell 2. A top cover 9 is provided on the upper end of the end shell 2. Bolts 18 are threadedly connected to the screw holes 19. The bolts 18 pass through the top cover 9 and the base 1. The screw connection between the bolts 18 and the screw holes 19 is made by using a screwdriver that matches the bolts 18, which facilitates the replacement and maintenance of other parts of the electric push rod.

[0033] Working Principle: During use, the assembler first uses the precise threaded connection between bolt 18 and screw hole 19 to fix the base 1 and end shell 2, forming a stable bottom support. Then, the end shell 2 and top cover 9 are connected in the same way, ensuring the entire electric actuator's outer shell structure has high stability and integrity from the initial stage. Subsequently, the reinforcing rib 6 is slid into the outer shell 3 along the inner wall of the outer shell 3 and the outer wall of the actuator mounting space 5 in the opposite direction, thereby improving the durability and stability of the entire electric actuator. After the reinforcing rib 6 is fully slid into the outer shell 3, the assembly... Personnel aligned the second fixing hole 13 on the reinforcing rib 6 with the first fixing hole 10 on the outer shell 3, and fixed the reinforcing rib 6 to the outer shell 3 using a snap-fit ​​assembly, thus forming a more robust overall structure. Then, using specialized tools, they passed the two legs of the V-shaped elastic plate 15 through the holes in the bearing 14. Because the V-shaped elastic plate 15 is fitted onto the middle section surface of the bearing 14, and the radii at both ends of the bearing 14 are smaller than the radius of the middle section, the V-shaped elastic plate 15 can flexibly adapt to the shape of the bearing 14 during installation, ensuring stable fixation to the bearing after installation. 14. Then push the V-shaped elastic plate 15 so that it slides along the surface of the bearing 14 and gradually approaches the slot 17 opened inside the reinforcing rib 6. When the two legs of the V-shaped elastic plate 15 are fully inserted into the slot 17, a crisp click will be heard, which indicates that the V-shaped elastic plate 15 has successfully engaged with the slot 17, thus firmly fixing the reinforcing rib 6 to the outer shell 3. When the outer shell 3 of the electric actuator suffers partial damage during long-term use, the maintenance personnel do not need to disassemble and replace the entire electric actuator. They only need to use professional tools to clamp the two legs of the V-shaped elastic plate 15. Each leg is supported and slid horizontally on the bearing 14. As the V-shaped elastic plate 15 is pulled, the engagement between it and the slot 17 will gradually disengage. At this point, the maintenance personnel can remove the V-shaped elastic plate 15 and replace the outer shell 3 separately. The threaded connection between the reinforcing ribs 6 and the connecting shaft 11 increases stability, and the sliding connection between the support plate 12 at the lower end of the reinforcing rib 6 and the inner shell 4 increases friction. This ensures that the reinforcing ribs 6 will not slip or move during the replacement of the outer shell 3, thus ensuring the stability and integrity of the entire electric push rod structure.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A housing structure for an electric actuator, comprising a base (1), characterized in that, An end shell (2) is provided above the base (1), and an outer shell (3) is provided above the end shell (2). A reinforcing rib (6) is provided inside the outer shell (3). There are two sets of reinforcing ribs (6). A snap-fit ​​component is provided inside one end of the reinforcing rib (6) near the outer shell (3). The outer shell (3) and the reinforcing rib (6) are snapped together by the snap-fit ​​component. The other end of the reinforcing rib (6) is slidably installed on the inner shell (4). The inner shell (4) has a push rod installation space (5).

2. The housing structure of an electric actuator according to claim 1, characterized in that, The outer shell (3) has a first fixing hole (10) on its surface, and the first fixing hole (10) is connected to a second fixing hole (13).

3. The housing structure of an electric actuator according to claim 1, characterized in that, The reinforcing rib (6) has a second fixing hole (13) on the surface near the outer shell (3), and two sets of slots (17) are provided inside the reinforcing rib (6), and the slots (17) are engaged with the locking blocks (16).

4. The housing structure of an electric actuator according to claim 1, characterized in that, The snap-fit ​​assembly includes a bearing (14) fixedly installed inside the reinforcing rib (6). A V-shaped elastic plate (15) is sleeved on the middle section surface of the bearing (14). Both ends of the V-shaped elastic plate (15) are provided with snap-fit ​​blocks (16). The snap-fit ​​blocks (16) are slidably connected to the inner wall of the reinforcing rib (6).

5. The housing structure of an electric actuator according to claim 1, characterized in that, A cavity (7) is provided between the legs of the reinforcing rib (6).

6. The housing structure of an electric actuator according to claim 1, characterized in that, The reinforcing rib (6) has multiple sets of connecting holes (8) on its surface, and adjacent sets of reinforcing ribs (6) are threaded together by connecting shafts (11).

7. The housing structure of an electric actuator according to claim 1, characterized in that, The lower end surface of the reinforcing rib (6) is fixedly connected to a support plate (12), and the support plate (12) is slidably connected to the inner shell (4).

8. The housing structure of an electric actuator according to claim 1, characterized in that, The upper and lower surfaces of the end shell (2) are provided with multiple sets of screw holes (19). The upper end of the end shell (2) is provided with a top cover (9). The screw holes (19) are threaded with bolts (18). The bolts (18) pass through the top cover (9) and the base (1).

Images