Small-size electric driver device

Abstract

The utility model relates to the technical field of drivers, in particular to a small-size electric driver device, which comprises an outer cover part, a driving part is mounted in the outer cover part, an execution part is mounted at one end of the driving part, and a stroke control part is arranged at one end of the execution part. The small-size electric driver device has the beneficial effects that the small-size electric driver device provided by the utility model is small in appearance and size and can be suitable for being installed in various occasions; the appearance is simple and attractive, and a user can customize different appearance colors according to the use environment; the electrical control mode is internal mechanical switch control, a large switch is used, large current is allowed to pass through, the service life is long, and the performance is safe and reliable; the protection grade is high, no screw fixing hole exists outside, and reliable dustproof and waterproof performance is achieved; a high-precision guide sleeve is arranged inside, a motor shaft and a lead screw shaft are accurately positioned, noise is low, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of drivers, in particular to a small-volume electric driver device. Background Art

[0002] Currently, existing drivers are too large in size. If they are used for installation in a small space, they are too large to be installed easily or cannot be installed due to space limitations.

[0003] The appearance of existing products is relatively industrial and cannot be used in occasions with special requirements for appearance; due to the limitation of size, existing products do not have on-off circuits, and the driver body is easily damaged when the motor runs to the extreme positions at both ends, or the on-off circuit adopts the current stall control method, which is easy to damage the motor after long-term use and reduce the service life of the driver; for occasions requiring a higher level of protection, the fixing screws are exposed, the protection level is relatively low, and it is easy for water or dust to enter, damaging the internal structure of the driver and reducing the service life of the driver; due to the installation method of the drive motor and other reasons, the space gap between the motor and the casing of the existing products is too large, and accurate positioning cannot be achieved. Due to the large eccentricity, it will cause too much noise during operation, affecting the user experience. Utility Model Content

[0004] The purpose of the present invention is to provide a small-volume electric drive device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a small-volume electric drive device, comprising an outer cover part, a driving part is installed inside the outer cover part, an execution part is installed at one end of the driving part, and a stroke control part is provided at one end of the execution part.

[0006] Preferably, the outer cover part includes a rear end fixing seat, an outer tube, a front end sealing cover, a sealing ring, a signal line and a guide block. A guide groove mechanism is provided inside the outer tube, and internal threads are provided at both ends. The rear end fixing seat is equipped with a signal line, and one end of the rear end fixing seat is provided with an external thread, which is directly connected and fixed to the outer tube through a threaded connection, etc. One end of the front section sealing cover is provided with an external thread connected to the outer tube.

[0007] Preferably, a sealing ring is installed inside the front sealing cover.

[0008] Preferably, the driving part includes a motor, a motor fixing seat and a motor fixing tube. The motor is installed in the mounting positioning hole of the motor fixing seat. The mounting positioning hole ensures that the motor is installed in the center position of the motor fixing seat. The motor is covered with a motor fixing tube on the outside. The motor fixing tube fixes the relative positions of the driver part and the execution part in the outer tube.

[0009] Preferably, the execution part includes a coupling, a fixed nut, a bearing, a bearing fixing seat, a screw, a sliding nut, a piston rod and a front end screw plug. The screw is equipped with a sliding nut, and the sliding nut is provided with a guide mechanism. When the screw rotates, it drives the sliding nut to perform reciprocating linear motion in the outer tube. The sliding nut is provided with a connecting thread for connecting to the piston rod. The piston rod is equipped with a front end screw plug. The other end of the screw is equipped with a stroke control part, a bearing fixing seat and a bearing, and the end is fixed with a fixed nut.

[0010] Preferably, when the motor rotates, the end of the lead screw of the driving part is connected to the motor output shaft through a coupling, a bearing fixing seat is fixed to the inner wall of the outer tube, and a bearing is provided between the bearing fixing seat and the lead screw.

[0011] Preferably, the stroke control part includes an upper limit switch, a lower limit switch, an upper contact, a lower contact, a spring, a stroke wire, a switch upper seat and a switch lower seat. The upper limit switch and the lower limit switch are respectively fixed in the switch upper seat and the switch lower seat. The switch upper seat and the switch lower seat respectively control the two end limit positions of the sliding nut in the driver. When the piston rod runs to the two end limit positions of the driver, it will drive the upper limit switch and the lower limit switch to operate, thereby achieving precise stroke control and avoiding damage to the driver; the upper contact and the lower contact are installed in the switch upper seat and the switch lower seat, and are used in conjunction with the spring. The stroke wire is installed in the upper contact. When the sliding nut runs to the uppermost end, it drives the stroke wire to trigger the switch limit.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The small-volume electric drive device proposed by the utility model has a small size and can be installed in various occasions; the appearance is simple and beautiful, and users can customize different appearance colors according to the use environment; the electrical control method is internal mechanical switch control, using a large switch and allowing large current to pass through, with a long service life and safe and reliable performance; the protection level is high, there are no screw fixing holes on the outside, and it has reliable dust and water resistance; a high-precision guide sleeve is provided inside, the motor shaft and the screw shaft are accurately positioned, the noise is low and the service life is long, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the driving part of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the execution part of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the stroke control part of the utility model;

[0018] Figure 5 for Figure 1 Front view of the middle structure;

[0019] Figure 6 for Figure 5 Structural cross-section view at AA in the middle.

[0020] In the figure: 11. Rear end fixing seat, 12. Outer tube, 13. Front end sealing cover, 14. Sealing ring, 15. Signal line, 16. Guide block, 21. Motor, 22. Motor fixing seat, 23. Motor fixing tube, 31. Coupling, 32. Fixing nut, 33. Bearing, 34. Bearing fixing seat, 35. Screw, 36. Sliding nut, 37. Piston rod, 38. Front end plug, 41. Upper limit switch, 42. Lower limit switch, 43. Upper contact, 44. Lower contact, 46. Spring, 47. Travel wire, 48. Upper switch seat, 49. Lower switch seat. DETAILED DESCRIPTION

[0021] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 6 The utility model provides a technical solution: a small-volume electric drive device, comprising an outer cover part, a driving part is installed inside the outer cover part, an execution part is installed at one end of the driving part, and a stroke control part is provided at one end of the execution part.

[0023] like Figure 1 As shown, this component is the outer cover of the electric drive, the outer tube 12 of the electric drive, the inner part of the outer tube 12 is provided with a guide groove mechanism, and both ends are provided with internal threads. The rear end fixing seat 11 is equipped with a signal line 15, and one end of the rear end fixing seat 11 is provided with an external thread, which is directly connected and fixed to the outer tube 12 through a threaded connection, etc., and one end of the front section sealing cover 13 is provided with an external thread connected to the outer tube 12, and a sealing ring 14 is installed inside the front end sealing cover 13.

[0024] like Figure 2As shown, this component is the driving part, and the motor 21 is installed in the mounting positioning hole of the motor fixing seat 22. The mounting positioning hole can ensure that the motor 21 is installed in the center position of the motor fixing seat 22. The motor 21 is covered with a motor fixing tube 23 on the outside, and the motor fixing tube 23 can fix the relative positions of the driver part and the execution part in the outer tube 12.

[0025] like Figure 3 As shown, this component is the execution part. A sliding nut 36 is installed on the screw 35. The sliding nut 36 has a guide mechanism. When the screw 35 rotates, it drives the sliding nut 36 to perform reciprocating linear motion in the outer tube 12. The sliding nut 36 is provided with a connecting thread for connecting the piston rod 37. The piston rod 37 is equipped with a front end wire plug 38. The other end of the screw 35 is equipped with a stroke control part, a bearing fixing seat 34 and a bearing 33, and the end is fixed with a fixing nut 32.

[0026] like Figure 4 As shown, this component is the stroke control part. The upper limit switch 41 and the lower limit switch 42 at both ends of the driver are fixed in the switch upper seat 48 and the switch lower seat 49 respectively. This switch fixing method can install a large current switch and allow large current to pass through. The two limit switches respectively control the two end limit positions of the sliding nut 36 in the driver. When the piston rod 37 runs to the two end limit positions of the driver, it will drive the upper limit switch 41 and the lower limit switch 42 to operate, thereby achieving precise stroke control and avoiding damage to the driver; the upper contact 43 and the lower contact 44 are installed in the switch upper seat 41 and the switch lower seat 42, and are used in conjunction with the spring 46. The stroke wire 47 is installed in the upper contact 43. When the sliding nut 36 runs to the uppermost end, it will drive the stroke wire to trigger the switch limit.

[0027] During use, the signal line 15 is connected to the power supply, and the power supply supplies power to the motor 21 through the signal line 15. When the motor 21 rotates, the end of the screw 35 of the driving part is connected to the output shaft of the motor 21 through the coupling 31, and the rotation of the motor shaft drives the screw 35 to rotate. A sliding nut 36 is provided on the screw 35. When the screw 35 rotates, it drives the sliding nut 36 to rotate or move linearly. Because a guide mechanism is provided inside the outer tube 12, which is used in conjunction with the guide mechanism of the sliding nut 36, the sliding nut 36 moves linearly inside the outer tube 12. The sliding nut 36 is connected to the piston rod 37 and the front end screw plug 38. Therefore, when the sliding nut 38 moves linearly, it will drive the piston rod 37 and the front end screw plug 38 to do reciprocating linear motion. The guide block 16 is installed at the front end of the outer tube 12, and the front end sealing cover 13 is fixed to the front end of the outer tube 12 and fixes the internal guide block 16. The piston rod 37 passes through the guide block 16 and the front end sealing cover 13 and contacts the sealing ring 14 inside the front end sealing cover 13. The guide block 16 limits the running path of the piston rod 37 so that it can only move linearly in the guide block 16 but not swing. The sealing ring 14 plays a protective role and isolates external dust and water from entering the interior of the main body; when the sliding nut 36 runs to the maximum stroke, the sliding nut 36 will touch the stroke wire 47 placed in the groove of the outer tube 12 , the other end of the travel wire 47 is connected to the upper contact 43, thereby triggering the upper limit switch 41 to prevent the sliding nut 36 from continuing to move upward and damaging the main body. At this time, the sliding nut 36 can only move downward and release the triggered upper limit switch 41. At this time, the motor 21 can drive the sliding nut 36 to move to both ends; when the sliding nut 36 moves downward to the minimum stroke, it touches the lower contact 44, thereby driving the triggering of the lower limit switch 42, so that the sliding nut 36 stops moving downward. At this time, the sliding nut 36 can only move upward and the triggered lower limit switch 42 is reset by the spring 46;

[0028] The bearing fixing seat 34 and the motor fixing seat 22 cooperate with each other to be installed into the inside of the guide tube 12 through the guide mechanism inside the outer tube 12 and limited by the steps set inside. This method can improve the coaxiality of the output shaft of the motor 21 and the input shaft of the screw rod 35; the outside of the motor 21 is covered with a motor fixing tube 23, and the rear end fixing seat 11 can limit the position of the motor fixing tube 23 after being installed in the outer tube 12, and fix the position of the driver part, the execution part, and the stroke control part in the outer cover.

[0029] Although the 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 may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small-volume electric drive device, comprising an outer cover, characterized in that: The driving part is installed inside the outer cover part, and the execution part is installed at one end of the driving part, and the stroke control part is provided at one end of the execution part; the outer cover part includes a rear end fixing seat (11), an outer tube (12), a front end sealing cover (13), a sealing ring (14), a signal line (15) and a guide block (16), the outer tube (12) is provided with a guide groove mechanism inside, and has internal threads at both ends, the rear end fixing seat (11) is equipped with a signal line (15), and one end of the rear end fixing seat (11) is provided with an external thread, which is directly connected to the outer tube (16) through a thread. 12) is connected and fixed, and one end of the front sealing cover (13) is provided with an external thread connected to the outer tube (12); the driving part includes a motor (21), a motor fixing seat (22) and a motor fixing tube (23), the motor (21) is installed in the installation positioning hole of the motor fixing seat (22), the installation positioning hole ensures that the motor (21) is installed in the center position of the motor fixing seat (22), the motor (21) is covered with a motor fixing tube (23), and the motor fixing tube (23) fixes the relative positions of the driver part and the execution part in the outer tube (12).

2. A small-volume electric drive device according to claim 1, characterized in that: A sealing ring (14) is installed inside the front sealing cover (13).

3. The small-volume electric drive device according to claim 1, characterized in that: The execution part includes a coupling (31), a fixed nut (32), a bearing (33), a bearing fixing seat (34), a lead screw (35), a sliding nut (36), a piston rod (37) and a front end plug (38). The lead screw (35) is provided with a sliding nut (36). The sliding nut (36) is provided with a guide mechanism. When the lead screw (35) rotates, the sliding nut (36) is driven to perform reciprocating linear motion in the outer tube (12). The sliding nut (36) is provided with a connecting thread for connecting to the piston rod (37). The piston rod (37) is provided with a front end plug (38). The other end of the lead screw (35) is provided with a stroke control part, a bearing fixing seat (34) and a bearing (33). The end is fixed with a fixed nut (32).

4. The small-volume electric drive device according to claim 3, characterized in that: When the motor (21) rotates, the end of the lead screw (35) of the driving part is connected to the output shaft of the motor (21) through the coupling (31), and a bearing fixing seat (34) is fixed to the inner wall of the outer tube (12), and a bearing (33) is provided between the bearing fixing seat (34) and the lead screw (35).

5. The small-volume electric drive device according to claim 4, characterized in that: The stroke control part includes an upper limit switch (41), a lower limit switch (42), an upper contact (43), a lower contact (44), a spring (46), a stroke wire (47), a switch upper seat (48) and a switch lower seat (49). The upper limit switch (41) and the lower limit switch (42) are respectively fixed in the switch upper seat (48) and the switch lower seat (49). The switch upper seat (48) and the switch lower seat (49) respectively control the two end limit positions of the sliding nut (36) in the driver. When the plug rod (37) moves to the extreme positions at both ends of the driver, it drives the upper limit switch (41) and the lower limit switch (42) to operate, thereby achieving precise stroke control and avoiding damage to the driver; the upper contact (43) and the lower contact (44) are installed in the switch upper seat (48) and the switch lower seat (49), and are used in conjunction with the spring (46). The stroke wire (47) is installed in the upper contact (43). When the sliding nut (36) moves to the upper end, it drives the stroke wire to trigger the switch limit.

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