Foldable electric push rod

Abstract

The utility model provides a foldable electric push rod, and relates to the technical field of electric push rods. A hinge connecting hole is formed in the right side of the base, a mounting seat is mounted on the hinge connecting hole through a pin shaft, a driving motor is mounted on the base through a bolt, and a shell is mounted on the base through a bolt; according to the utility model, by drawing the locking shaft, the conical tooth structure on the locking shaft is separated from the conical tooth hole, the extension rod is foldable, the hinge design of the extension rod and the push rod and the reasonable folding structure, the overall occupied space can be obviously reduced, and space resources can be effectively saved in the transportation process or the storage process; the transportation cost and the storage requirement are reduced; through the design of a sliding groove in the inner wall of the shell and a matching block at the lower end of the push rod fixing base, linear guidance of the push rod in the moving process is guaranteed, meanwhile, the lubricating ring is matched, friction resistance is further reduced, moving smoothness and efficiency are improved, part abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electric linear actuator technology, and in particular to a foldable electric linear actuator. Background Technology

[0002] Electric linear actuators, as driving devices that convert electrical energy into linear reciprocating mechanical energy, have wide applications in numerous industrial and civilian fields. For example, in smart homes, they are used to adjust the height, angle, or position of furniture, such as electric height-adjustable desks and electric sofa backrest adjustments; in medical equipment, they assist in the lifting of hospital beds and the motion control of rehabilitation equipment; and in industrial automated production lines, they participate in operations such as material pushing and positioning of mechanical parts. With the continuous expansion of these application scenarios and the emergence of diversified needs, higher requirements are placed on the functionality, adaptability, and portability of electric linear actuators. This utility model is a foldable electric linear actuator.

[0003] Traditional electric linear actuators are typically designed with a fixed length. Their application is greatly limited in scenarios where space is limited or where the position and form of use need to be frequently changed. For example, in outdoor events or temporary exhibition venues, if electric linear actuators are needed to drive certain equipment, their non-foldable nature makes transportation and storage extremely inconvenient, occupies a large volume of space, and increases transportation costs and storage difficulties. Utility Model Content

[0004] This disclosure relates to a foldable electric linear actuator, which solves the problem that traditional electric linear actuators, due to their fixed-length structural design, are limited in application in scenarios with limited space and frequent changes in usage position and form, and suffer from inconvenient transportation and storage.

[0005] In a first aspect, this disclosure provides a foldable electric actuator, specifically comprising: a base;

[0006] The base has a hinged connection hole on its right side. A mounting seat is installed on the hinged connection hole via a pin. A drive motor is installed on the base via bolts, and a housing is also installed on the base via bolts. The base has a mounting groove containing two sets of bearings. A lower pressure seat is installed on the base via bolts, with its lower end pressing down on a bearing near the upper end of the base. Lead screws are fitted on both sets of bearings. Synchronous pulleys are installed on the lower ends of the lead screws and the output shaft of the drive motor via key engagement. A synchronous belt connects the two sets of synchronous pulleys. A movable push rod is installed inside the housing. The upper end of the push rod has a beveled tooth hole. An extension rod is hinged to the upper end of the push rod. The extension rod has a through hole. A locking shaft is installed between the through hole on the extension rod and the beveled tooth hole at the upper end of the push rod. The locking shaft has a beveled tooth structure that meshes with the beveled tooth groove on the beveled tooth hole. A nut is threaded onto the locking shaft, and a spring is movably sleeved on the locking shaft.

[0007] In at least some embodiments,

[0008] The drive motor is located on the left side of the housing, and a cover is fixed to the lower end of the base, which covers the timing belt.

[0009] In at least some embodiments,

[0010] The inner wall of the outer casing is provided with a sliding groove, the push rod is a hollow structure, the lower end of the push rod is fixed with a fixed seat, and the lower end of the fixed seat is installed with a threaded seat by bolts, and the screw and the threaded seat are threadedly engaged.

[0011] In at least some embodiments,

[0012] The lower end of the fixed base is provided with a groove, and a mating block is installed in the groove of the lower end of the fixed base by bolts. The mating block moves in the sliding groove on the inner wall of the outer shell, and a lubrication ring is fitted on the fixed base.

[0013] In at least some embodiments,

[0014] The upper end of the outer shell is bolted to a top seat, and a wear-resistant cylinder is fixed inside the top seat. The wear-resistant cylinder is sleeved on the push rod.

[0015] In at least some embodiments,

[0016] The upper end of the top seat is provided with a groove, and a dustproof sealing ring is installed in the groove.

[0017] In at least some embodiments,

[0018] The right end of the outer casing is provided with a heat-conducting plate, on which two sets of locking plates are installed. Both sets of locking plates are U-shaped and are installed on the outer casing with screws.

[0019] This utility model provides a foldable electric actuator, which has the following advantages:

[0020] In this invention, when not in operation, the locking shaft is pulled to separate the bevel tooth structure from the bevel tooth hole, allowing the extension rod to be folded. The hinged design of the extension rod and the push rod, along with the reasonable folding structure, significantly reduces the overall space occupied. Whether during transportation or storage, it effectively saves space resources, reduces transportation costs and warehousing requirements. In narrow and complex indoor environments, such as small apartments or specially shaped spaces, its foldable structure allows for flexible adjustment of its shape according to the actual space conditions before installation, avoiding problems such as difficulty in installation due to fixed length or interference with the surrounding environment during extension. This greatly improves the adaptability of installation in various special space scenarios.

[0021] Furthermore, in this invention, the design of the sliding groove on the inner wall of the outer shell and the mating block at the lower end of the push rod fixing seat ensures the linear guidance of the push rod during movement. At the same time, the lubrication ring further reduces frictional resistance, improves the smoothness and efficiency of movement, reduces component wear, and extends service life. The wear-resistant cylinder inside the top seat provides good protection and support for the extended part of the push rod, preventing the push rod from wearing or deforming due to long-term use. In addition, the dustproof sealing ring can effectively block dust and other impurities from entering the inner shell, protecting the internal transmission components from contamination and maintaining the normal operation performance of the equipment.

[0022] Furthermore, in this invention, the heat-conducting plate helps to dissipate the heat generated during the operation of the electric linear actuator in a timely manner. Especially during long-term or high-load operation, it can effectively prevent performance degradation and component aging caused by heat accumulation, improve the heat dissipation efficiency and overall operational stability of the equipment, ensure that the electric linear actuator can work continuously and reliably under different working conditions, improve the durability and reliability of the product, and reduce maintenance costs and frequency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0024] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0025] In the attached diagram:

[0026] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0027] Figure 2 A cross-sectional structural schematic diagram of the outer casing portion of this application is shown;

[0028] Figure 3 This application shows Figure 2 A magnified structural diagram of part A in the middle;

[0029] Figure 4 This application shows Figure 2 A magnified structural diagram of part B in the middle section;

[0030] Figure 5 A schematic diagram of the push rod portion of this application is shown;

[0031] Figure 6 A schematic diagram of the locking shaft portion of this application is shown.

[0032] List of reference numerals

[0033] 1. Base; 11. Hinge connection hole; 111. Mounting seat; 12. Drive motor; 13. Bearing; 131. Lead screw; 132. Synchronous belt; 133. Lower pressure seat; 14. Cover;

[0034] 2. Outer shell; 21. Slide groove; 22. Push rod; 221. Tapered tooth hole; 222. Fixed seat; 223. Lubricating ring; 224. Threaded seat; 225. Mating block; 23. Top seat; 231. Wear-resistant cylinder; 232. Dustproof sealing ring;

[0035] 3. Extension rod; 31. Locking shaft; 311. Spring;

[0036] 4. Heat-conducting plate; 41. Locking plate. Detailed Implementation

[0037] 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. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] Example 1: Please refer to Figures 1 to 6 :

[0039] This utility model proposes a foldable electric push rod, including: a base 1;

[0040] The right side of the base 1 is provided with a hinge connection hole 11. A mounting seat 111 is installed on the hinge connection hole 11 via a pin. A drive motor 12 is installed on the base 1 via bolts, and a housing 2 is also installed on the base 1 via bolts. The base 1 is provided with a mounting groove, in which two sets of bearings 13 are installed. A lower pressure seat 133 is installed on the base 1 via bolts. The lower end of the lower pressure seat 133 presses down on the bearings 13 near the upper end of the base 1. A lead screw 131 is installed on both sets of bearings 13. The lower ends of the lead screw 131 and the output shaft of the drive motor 12 are both connected by a flat key. A synchronous pulley is installed, and a synchronous belt 132 connects the two sets of synchronous pulleys. A movable push rod 22 is installed inside the outer casing 2. The upper end of the push rod 22 is provided with a conical tooth hole 221. An extension rod 3 is hinged to the upper end of the push rod 22. The extension rod 3 is provided with a through hole. A locking shaft 31 is installed between the through hole on the extension rod 3 and the conical tooth hole 221 at the upper end of the push rod 22. The locking shaft 31 is provided with a conical tooth structure. The conical tooth structure meshes with the conical tooth groove on the conical tooth hole 221. A nut is threaded onto the locking shaft 31. A spring 311 is movably sleeved on the locking shaft 31.

[0041] The drive motor 12 is located on the left side of the housing 2, and the lower end of the base 1 is fixed with a cover 14, which covers the timing belt 132.

[0042] In this embodiment of the disclosure,

[0043] The inner wall of the outer casing 2 is provided with a sliding groove 21. The push rod 22 is a hollow structure. The lower end of the push rod 22 is fixed with a fixed seat 222. The lower end of the fixed seat 222 is bolted with a threaded seat 224. The lead screw 131 is threadedly engaged with the threaded seat 224. The lower end of the fixed seat 222 is provided with a groove. A mating block 225 is bolted into the groove at the lower end of the fixed seat 222. The mating block 225 moves within the sliding groove 21 on the inner wall of the outer casing 2. A lubricating ring 223 is fitted on the fixed seat 222. The upper end of the outer casing 2 is bolted with a top seat 23. A wear-resistant ring is fixed inside the top seat 23. The wear-resistant cylinder 231 is fitted onto the push rod 22. Its function is as follows: the design of the sliding groove 21 on the inner wall of the outer shell 2 and the mating block 225 at the lower end of the fixed seat 222 of the push rod 22 ensures the linear guidance of the push rod 22 during the movement, reducing the risk of deflection. At the same time, the lubrication ring 223 further reduces the frictional resistance, improves the smoothness and efficiency of the movement, reduces the wear of parts, and extends the service life. The wear-resistant cylinder 231 inside the top seat 23 provides good protection and support for the protruding part of the push rod 22, preventing the push rod 22 from wearing or deforming due to long-term use.

[0044] Example 2, based on Example 1,

[0045] The upper end of the top seat 23 is provided with a groove, and a dustproof sealing ring 232 is installed in the groove. Its function is to effectively prevent dust and other impurities from entering the interior of the outer casing 2 and protect the internal transmission components from contamination.

[0046] Example 3, based on Examples 1 and 2,

[0047] A heat-conducting plate 4 is provided on the right end of the outer casing 2. Two sets of locking plates 41 are installed on the heat-conducting plate 4. Both sets of locking plates 41 are U-shaped and are installed on the outer casing 2 by screws. The function of the heat-conducting plate 4 is to help dissipate the heat generated during the operation of the electric push rod in a timely manner. Especially during long-term or high-load operation, it can effectively prevent performance degradation and component aging caused by heat accumulation.

[0048] The working principle of this embodiment is as follows: When the drive motor 12 is powered on, it starts to run, and its output shaft rotates. Since the lower end of the output shaft of the drive motor 12 and the lead screw 131 are both equipped with synchronous pulleys through a key, and a synchronous belt 132 connects the two sets of synchronous pulleys, the power of the drive motor 12 is transmitted to the lead screw 131 through the synchronous belt 132, causing the lead screw 131 to rotate accordingly. The lead screw 131 is threadedly engaged with the threaded seat 224 installed on the fixed seat 222 at the lower end of the push rod 22. When the lead screw 131 rotates, according to the principle of threaded transmission, the push rod 22 will move along the linear direction defined by the sliding groove 21 on the inner wall of the outer shell 2. This is because the mating block 225 at the lower end of the fixed seat 222 moves within the sliding groove 21 on the inner wall of the outer shell 2, playing a linear guiding role. At the same time, the lubricating ring 223 reduces the frictional resistance during the engagement process, ensuring the smoothness and efficiency of the push rod 22's movement. The upper end of the push rod 22 is provided with The conical tooth hole 221 is connected to the extension rod 3 via the locking shaft 31. When it is necessary to adjust the overall length or angle of the electric push rod to adapt to different working conditions, the extension rod 3 can be rotated around the hinge point with the push rod 22. After adjusting to the appropriate position, the conical tooth structure on the locking shaft 31 engages with the conical tooth groove of the conical tooth hole 221. The elastic force of the spring 311 makes the connection more stable, realizing the relative fixation of the extension rod 3 and the push rod 22. During the movement of the push rod 22, the wear-resistant cylinder 231 inside the top seat 23 at the upper end of the housing 2 provides protection and support for the extended part of the push rod 22, preventing it from wearing or deforming due to long-term use. The dustproof sealing ring 232 in the groove at the upper end of the top seat 23 can effectively block dust and other impurities from entering the interior of the housing 2, avoiding contamination and damage to internal transmission components such as the lead screw 131 and the threaded seat 224, thereby ensuring that the electric push rod can perform stable and reliable linear reciprocating motion.

[0049] The following points should be noted in this article:

[0050] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0051] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0052] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A foldable electric linear actuator, comprising: Base (1); characterized in that, The base (1) has a hinge connection hole (11) on its right side. A mounting seat (111) is installed on the hinge connection hole (11) by means of a pin. A drive motor (12) is installed on the base (1) by means of bolts. A housing (2) is also installed on the base (1) by means of bolts. A mounting groove is provided on the base (1). Two sets of bearings (13) are installed in the mounting groove. A lower pressure seat (133) is installed on the base (1) by means of bolts. The lower end of the lower pressure seat (133) presses down on the bearing (13) near the upper end of the base (1). A lead screw (131) is installed on both sets of bearings (13). The lower ends of the lead screw (131) and the output shaft of the drive motor (12) are connected by means of a flat... A timing pulley is installed in key fit with the two sets of timing pulleys and a timing belt (132) is connected between them. A movable push rod (22) is installed inside the outer shell (2). A conical tooth hole (221) is provided at the upper end of the push rod (22). An extension rod (3) is hinged to the upper end of the push rod (22). A through hole is provided on the extension rod (3). A locking shaft (31) is installed between the through hole on the extension rod (3) and the conical tooth hole (221) at the upper end of the push rod (22). A conical tooth structure is provided on the locking shaft (31). The conical tooth structure meshes with the conical tooth groove on the conical tooth hole (221). A nut is threaded onto the locking shaft (31). A spring (311) is movably sleeved on the locking shaft (31).

2. The foldable electric actuator according to claim 1, characterized in that, The drive motor (12) is located on the left side of the outer casing (2), and a cover (14) is fixed at the lower end of the base (1), which covers the synchronous belt (132).

3. A foldable electric actuator according to claim 1, characterized in that, The inner wall of the outer shell (2) is provided with a sliding groove (21), the push rod (22) is a hollow structure, the lower end of the push rod (22) is fixed with a fixed seat (222), the lower end of the fixed seat (222) is installed with a threaded seat (224) by bolts, and the screw (131) is threadedly engaged with the threaded seat (224).

4. A foldable electric actuator according to claim 3, characterized in that, The lower end of the fixed seat (222) is provided with a groove, and a mating block (225) is installed in the groove of the lower end of the fixed seat (222) by bolts. The mating block (225) moves in the sliding groove (21) on the inner wall of the outer shell (2), and a lubricating ring (223) is fitted on the fixed seat (222).

5. A foldable electric actuator according to claim 4, characterized in that, The upper end of the outer shell (2) is bolted to a top seat (23), and a wear-resistant cylinder (231) is fixed inside the top seat (23). The wear-resistant cylinder (231) is sleeved on the push rod (22).

6. A foldable electric actuator according to claim 5, characterized in that, The top seat (23) has a groove at its upper end, and a dustproof sealing ring (232) is installed in the groove.

7. A foldable electric actuator according to claim 5, characterized in that, The right end of the outer shell (2) is provided with a heat-conducting plate (4), and two sets of locking plates (41) are installed on the heat-conducting plate (4). Both sets of locking plates (41) are set with a U-shaped structure, and both sets of locking plates (41) are installed on the outer shell (2) by screws.

Images