Electric push rod driving structure

Abstract

The utility model relates to the technical field of electric push rods, in particular to an electric push rod driving structure. The sleeve is fixedly connected with the mounting seat; the driving part is fixed on the mounting seat, at least the driving end of the driving part is arranged in the sleeve, and the driving part is a brushless motor; the speed reduction structure is rotationally connected in the mounting seat and is connected with the driving part of the driving part; the telescopic structure comprises a lead screw connected with the speed reduction structure and a push rod meshed with the lead screw and capable of relatively moving in the sleeve, and one end of the push rod extends to the end, away from the mounting base, of the sleeve; a first waterproof structure is arranged at the tail end of the mounting base, and a second waterproof structure is arranged at the end, away from the mounting base, of the sleeve. The waterproof performance of the electric push rod driving structure is improved through the second waterproof structure arranged at the end part of the sleeve and the first waterproof structure arranged on the mounting seat, and meanwhile, due to the utilization of the brushless motor, the effects of longer service life, higher efficiency and lower noise can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to an electric push rod driving structure. Background Art

[0002] Electric linear actuators are also called linear actuators. They are mainly composed of motor actuators and control devices. After the motor is decelerated by gears, it drives a bunch of screw nuts and uses the forward and reverse rotation of the motor to complete the actuator action. They are mainly used in home, industrial and medical industries, such as electric sofas, nursing beds, industrial brackets, medical brackets, medical beds, etc.

[0003] In the related technology, the motors in electric linear actuators basically use brushed DC motors to drive reducers, lead screws, etc. However, due to the structural characteristics and technical limitations of brushed motors, the service life of electric linear actuator products is limited, the noise is relatively loud, and the waterproof performance is not good, which affects the user experience. Utility Model Content

[0004] In view of at least one of the above technical problems, the utility model provides an electric push rod driving structure, which uses structural improvements to increase the service life of the electric push rod driving structure, reduce product noise and improve product waterproof performance.

[0005] According to a first aspect of the utility model, there is provided an electric push rod driving structure, comprising:

[0006] Mounting seat;

[0007] A sleeve, fixedly connected to the mounting seat;

[0008] A driving member, the driving member is fixed on the mounting seat, and at least a driving end is arranged in the sleeve, and the driving member is a brushless motor;

[0009] a speed reduction structure, rotatably connected in the mounting seat and connected to a driving member of the driving member;

[0010] The telescopic structure comprises a screw connected to the deceleration structure, and a push rod meshed with the screw and relatively movably arranged in the sleeve, wherein one end of the push rod extends to an end of the sleeve away from the mounting seat;

[0011] The end of the mounting seat has a first waterproof structure, and the end of the sleeve away from the mounting seat has a second waterproof structure.

[0012] In some embodiments of the present invention, the driving member and the push rod are vertically arranged to form a T-shaped structure.

[0013] In some embodiments of the present invention, the reduction structure is a first worm wheel coaxially connected to the screw and a first worm meshing with the first worm wheel, and the first worm is arranged on the driving member.

[0014] In some embodiments of the present invention, the driving member is arranged in parallel with the push rod, and the driving member and the deceleration structure form a U-shaped structure.

[0015] In some embodiments of the utility model, the reduction structure is a second worm connected to the driving member, a second worm wheel rotatably disposed in the mounting seat and meshing with the second worm, a third worm coaxially connected to the second worm wheel, and a third worm wheel coaxially connected to the lead screw and meshing with the third worm.

[0016] In some embodiments of the present invention, the driving member is coaxially arranged with the push rod, and the driving member is arranged inside the mounting seat to form a linear structure.

[0017] In some embodiments of the present invention, the reduction structure is a planetary gear reduction mechanism.

[0018] In some embodiments of the present invention, the first waterproof structure and the second waterproof structure both include an end cover connected to the mounting seat or the sleeve, and the end cover has a sealing member on a side facing the inner wall of the mounting seat or the outer wall of the push rod.

[0019] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model improves the waterproof performance of the electric push rod drive structure by setting the driving part of the electric push rod drive structure as a brushless motor, and setting a second waterproof structure at the end of the sleeve and a first waterproof structure on the mounting seat. At the same time, due to the use of the brushless motor, it can achieve the effects of longer life, higher efficiency and lower noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of the T-shaped electric push rod driving structure in the embodiment of the utility model;

[0022] Figure 2 In the embodiment of the utility model Figure 1 A cross-sectional view of

[0023] Figure 3 This is a structural schematic diagram of a U-shaped electric push rod driving structure in an embodiment of the utility model;

[0024] Figure 4 It is a cross-sectional view of the U-shaped electric push rod driving structure in the embodiment of the utility model;

[0025] Figure 5 In the embodiment of the utility model Figure 3 A local enlarged view of point A in FIG.

[0026] Figure 6 It is a cross-sectional structural schematic diagram of a linear electric push rod driving structure in an embodiment of the utility model;

[0027] Figure 7 In the embodiment of the utility model Figure 6 A partial enlarged view of point B in FIG. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] like Figures 1 to 7 The electric push rod driving structure shown in the figure comprises: a mounting seat 1, a sleeve 2, a driving member 3, a deceleration structure 4 and a telescopic structure 5, wherein: Figure 1 and Figure 2As shown in, in the embodiment of the utility model, the mounting seat 1 is used to fix the driving member 3 and connect it with the sleeve 2 to form the shell structure of the electric push rod driving structure; the sleeve 2 is fixedly connected to the mounting seat 1. In some embodiments of the utility model, the structure of the sleeve 2 is to provide a sliding path for the telescopic structure 5 to be telescopic; the driving member 3 is fixed on the mounting seat 1, and at least the driving end is arranged in the sleeve 2, and the driving member 3 is a brushless motor; the reduction structure 4 is rotatably connected in the mounting seat 1 and connected to the driving member 3 of the driving member 3; of course, it should be pointed out here that in some embodiments of the utility model, the connection form of the driving member 3 and the reduction structure 4 is various, and various forms can be formed, which are described in detail in the following embodiments of the utility model; the telescopic structure 5 is ... The reduction structure 5 includes a screw rod 51 connected to the reduction structure 4, a push rod 52 meshed with the screw rod 51 and relatively movably arranged in the sleeve 2, and one end of the push rod 52 extends to the end of the sleeve 2 away from the mounting seat 1; through such an arrangement, when the screw rod 51 rotates, since the push rod 52 is connected to the screw rod 51 by threaded meshing, the rotation of the screw rod 51 can drive the push rod 52 to move forward and backward. Of course, it should be pointed out here that in the embodiment of the utility model, when the push rod 52 is circular, the push rod 52 also has a rotation-stopping structure connected to the sleeve 2 to ensure that the push rod 52 only moves forward and backward in the axial direction; in the embodiment of the utility model, the end of the mounting seat 1 has a first waterproof structure 61, and the end of the sleeve 2 away from the mounting seat 1 has a second waterproof structure 62. Of course, it should be pointed out here that the first waterproof structure 61 and the second waterproof structure 62 have a variety of structural forms, for example, a sealing member 61b structure can be used to achieve sealing of the end of the mounting seat 1 and the end of the sleeve 2 to reduce the entry of liquid into the mounting seat 1 and the sleeve 2.

[0032] When the electric push rod driving structure of the utility model is implemented, the rotation of the driving member 3 drives the rotation of the reduction structure 4, the rotation of the reduction structure 4 drives the rotation of the screw rod 51, and the rotation of the screw rod 51 drives the push rod 52 to move forward or backward. Through such an arrangement, the forward or reverse rotation of the driving member 3 realizes the forward extension or backward retraction of the push rod 52 relative to the sleeve 2.

[0033] In the above embodiment, by setting the driving member 3 of the electric push rod driving structure as a brushless motor, and setting a second waterproof structure 62 at the end of the sleeve 2 and a first waterproof structure 61 on the mounting seat 1, compared with the prior art, the waterproof performance of the electric push rod driving structure is improved, and at the same time, due to the use of a brushless motor, a longer life, higher efficiency and lower noise can be achieved.

[0034] Based on the above embodiments, in some embodiments of the present utility model, such as Figure 1 and Figure 2As shown in , the driving member 3 is vertically arranged with the push rod 52 to form a T-shaped structure. Specifically, the speed reduction structure 4 is a first worm wheel 41a coaxially connected with the screw rod 51 and a first worm 41b meshing with the first worm wheel 41a, and the first worm 41b is arranged on the driving member 3.

[0035] In some embodiments of the present invention, please refer to Figure 3 and Figure 4 The driving member 3 is arranged in parallel with the push rod 52, and the driving member 3 and the deceleration structure 4 form a U-shaped structure. Figure 5 In some embodiments of the utility model, the reduction structure 4 is a second worm 42a connected to the driving member 3, a second worm wheel 42b rotatably arranged in the mounting seat 1 and meshing with the second worm 42a, a third worm 42c coaxially connected to the second worm wheel 42b, and a third worm wheel 42d coaxially connected to the screw 51 and meshing with the third worm 42c. Through such a configuration, the rotation of the second worm 42a drives the rotation of the second worm wheel 42b, the rotation of the second worm wheel 42b synchronously drives the rotation of the third worm 42c, the rotation of the third worm 42c drives the rotation of the third worm wheel 42d, and the third worm wheel 42d is connected to the screw 51, thereby realizing the driving of the screw 51.

[0036] In some embodiments of the present invention, please refer to Figure 6 The driving member 3 is coaxially arranged with the push rod 52, and the driving member 3 is arranged inside the mounting seat 1 to form a linear structure. Specifically, the reduction structure 4 is a planetary gear reduction mechanism, and the planetary gear structure is a prior art. Through this arrangement, in the embodiment of the utility model, the sleeve 2 and the mounting seat 1 can be arranged as an integrated structure, thereby further improving the waterproof performance.

[0037] In some embodiments of the present invention, please refer to Figure 7 As shown in , the first waterproof structure 61 and the second waterproof structure 62 both include an end cap 61a connected to the mounting seat 1 or the sleeve 2, and the end cap 61a has a sealing member 61b on the side facing the inner wall of the mounting seat 1 or the outer wall of the push rod 52. Specifically, the connection between the end cap 61a and the mounting seat or the sleeve 2 can be achieved by threaded connection or fastener connection, and a sealing groove is provided in the portion of the end cap 61a extending to the inside of the mounting seat 1 or the inside of the sleeve 2 to fix the sealing member 61b, so as to improve the waterproof performance of the product.

[0038] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electric push rod driving structure, characterized in that: include: Mounting seat; A sleeve, fixedly connected to the mounting seat; A driving member, the driving member is fixed on the mounting seat, and at least a driving end is arranged in the sleeve, and the driving member is a brushless motor; a speed reduction structure, rotatably connected in the mounting seat and connected to a driving member of the driving member; The telescopic structure comprises a screw connected to the deceleration structure, and a push rod meshed with the screw and relatively movably arranged in the sleeve, wherein one end of the push rod extends to an end of the sleeve away from the mounting seat; The end of the mounting seat has a first waterproof structure, and the end of the sleeve away from the mounting seat has a second waterproof structure.

2. The electric push rod driving structure according to claim 1, characterized in that: The driving member and the push rod are arranged vertically to form a T-shaped structure.

3. The electric push rod driving structure according to claim 2, characterized in that: The speed reduction structure comprises a first worm wheel coaxially connected to the lead screw and a first worm screw meshing with the first worm wheel, wherein the first worm screw is arranged on the driving member.

4. The electric push rod driving structure according to claim 1, characterized in that: The driving member is arranged in parallel with the push rod, and the driving member and the deceleration structure form a U-shaped structure.

5. The electric push rod driving structure according to claim 4, characterized in that: The reduction structure comprises a second worm connected to the driving member, a second worm wheel rotatably arranged in the mounting seat and meshing with the second worm, a third worm coaxially connected to the second worm wheel, and a third worm wheel coaxially connected to the lead screw and meshing with the third worm.

6. The electric push rod driving structure according to claim 1, characterized in that: The driving member is coaxially arranged with the push rod, and the driving member is arranged inside the mounting seat to form a linear structure.

7. The electric push rod driving structure according to claim 6, characterized in that: The speed reduction structure is a planetary gear speed reduction mechanism.

8. The electric push rod driving structure according to any one of claims 1 to 7, characterized in that: The first waterproof structure and the second waterproof structure both include an end cover connected to the mounting seat or the sleeve, and the end cover has a sealing member on one side facing the inner wall of the mounting seat or the outer wall of the push rod.

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