Integrated brushless motor power push rod

Abstract

The utility model relates to the technical field of power machinery, in particular to an integrated brushless motor power push rod, which comprises a driving part, a transmission part and a moving part, the driving part and the moving part are positioned at two ends of the transmission part; the driving part comprises an end cover, a motor set and a circuit board set, one side of the end cover is open, a hollow cavity is formed in the end cover, the open end of the end cover is fixedly connected with the transmission part, the motor set and the circuit board set are fixedly arranged in the hollow cavity, and the circuit board set is located at the end, away from the opening, of the hollow cavity; the circuit board group comprises a board body, a control socket and a power supply socket, the control socket and the power supply socket are welded and fixed on the board body, the board body is fixedly connected with the motor group, and the control socket and the power supply socket are located on the side face, away from the motor group, of the board body and close to the edge of the hollow cavity; an assembly opening is formed in the side wall, opposite to the control socket and the power supply socket, of the end cover in a penetrating mode, and one end of the control socket and one end of the power supply socket are clamped in the assembly opening; working efficiency and service life of the electric push rod are guaranteed, and maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power machinery technical field especially relates to an integrated brushless motor power push rod. BACKGROUND

[0002] The motor push rod is a mechanism for driving the push rod to move linearly by using power structure, usually integrating the motor and transmission mechanism, the linear motion of the push rod can be converted by the rotary motion of the motor, as an electric actuator, the electric push rod has the advantages of high accuracy, strong reliability, low maintenance cost, strong environmental adaptability, simple installation and the like, and has wide application prospect in the fields of furniture intelligence, industrial automation, medical equipment and the like.

[0003] In the related art, a brush motor is usually used as a power source, the direction of current is changed by the carbon brush and commutator inside the motor, the carbon brush is a brush made of conductive graphite or carbon material, contacts the commutator, and introduces or leads out the current from the armature winding through the commutator, when the rotor rotates to a certain position, the carbon brush jumps from one set of commutator copper sheets to another set, thereby changing the direction of current, and switching the switching of the push rod commutation action; however, due to the friction between the carbon brush and the commutator, the brush motor can generate electric sparks, which can reduce the efficiency of the motor, shorten the service life, and affect the normal work of the push rod; in addition, the carbon brush needs to be replaced regularly, which also increases the maintenance cost.

[0004] The information disclosed in this BACKGROUND section is only for the purpose of enhancing the understanding of the background of the present utility model and should not be treated as admitting that the information constitutes prior art known to those of ordinary skill in the art. SUMMARY

[0005] The utility model solves the technical problem that: provide a kind of integrated brushless motor power push rod, guarantee the working efficiency and service life of electric push rod, reduce maintenance cost.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme of: an integrated brushless motor power push rod, comprising: driving part, transmission part and moving part;The driving part and the moving part are located at the two ends of the transmission part respectively, and are connected by the transmission part;

[0007] The driving part includes end cover, motor group and circuit board group, the end cover is provided with opening on one side, and the hollow cavity is formed in the inside, the opening end of the end cover is fixedly connected with the transmission part, the motor group and the circuit board group are fixedly arranged in the hollow cavity, and the circuit board group is located at one end of the hollow cavity away from the opening;

[0008] The circuit board set comprises a board body and a control socket and a power supply socket welded on the board body, the board body is fixedly connected with the motor set, the control socket and the power supply socket are located on the side of the board body away from the motor set and are arranged close to the edge of the hollow cavity, a fitting opening is arranged through the side wall of the end cover opposite to the control socket and the power supply socket, and one end of the control socket and the power supply socket is clamped in the fitting opening.

[0009] Further, an electrolytic capacitor is welded on the board body, and the electrolytic capacitor is arranged adjacent to the power supply socket.

[0010] Further, three welding notches in semicircular arc shape are arranged on the side edge of the board body opposite to the control socket and the power supply socket, and each welding notch is connected with an electric connection wire.

[0011] Further, the motor set comprises a base, a stator and a rotor arranged coaxially, the board body is fixedly arranged on one side of the base, one end of the rotor is rotationally connected with the middle part of the base from the other side of the base, the other end is rotationally connected with the transmission part, the stator is sleeved on the outer side surface of the rotor and is abutted with the base and the transmission part at two ends respectively.

[0012] Further, the stator comprises a stator core and a plurality of windings, the stator core is clamped and fixed between the base and the transmission part, the windings are arranged in the hollow cavity and are located at two ends of the stator core and are arranged at equal intervals around the rotor.

[0013] Further, the rotor comprises a rotating shaft, a bearing and a movable core, the movable core is sleeved on the rotating shaft and is located on the same height level plane as the stator core, the bearing is arranged in two and is sleeved on two ends of the rotating shaft, and the rotating shaft is rotationally connected with the base and the transmission part through the bearing.

[0014] Further, the transmission part comprises a housing, a gear disc arranged in the housing and a transmission shaft, the axis of the transmission shaft is arranged perpendicular to the axis of the rotating shaft, the gear disc is sleeved on one end of the transmission shaft, the rotating shaft is rotationally connected with the bottom of the housing through the bearing, the end part of the bearing extends into the housing, and the outer shaft surface of the extended part of the rotating shaft is provided with a helical tooth, and the helical tooth is arranged in meshing with the outer shaft surface of the gear disc.

[0015] Further, the shell comprises a first part and a second part which are opposite to each other, the second part is fixedly connected with the motor set as an integral structure, the end cover is fixedly arranged on the side of the second part away from the first part, the first part and the second part are respectively provided with a first assembly head and a second assembly head on the side opposite to the moving part, the first assembly head and the second assembly head are arranged at intervals, and the first assembly head and the second assembly head are both provided with an assembly hole arranged coaxially.

[0016] Further, the moving part comprises a fixed section and a telescopic section arranged coaxially, the telescopic section is arranged with a smaller shaft diameter than the fixed section, the fixed section is hollow inside, one end is arranged in the shell, and the other end extends towards the side away from the shell, the transmission shaft and one end of the telescopic section are located in the fixed section, and the telescopic section is connected with the transmission shaft.

[0017] Further, the fixed section is also provided with a limiting block screwed with the transmission shaft, the limiting block is provided with a stepped surface, the stepped surface is arranged towards the side of the telescopic section, the telescopic section is sleeved on the limiting block, and the end face is arranged in abutment with the stepped surface.

[0018] The utility model discloses the beneficial effects are: the utility model discloses a brushless motor as power source, avoid the friction and wear of carbon brush and commutator in the brush motor, reduce the generation of electric spark, thereby improve the efficiency and service life of motor push rod, the control of circuit board group and motor set fixed connection, the design of control socket and power supply socket makes the control and power supply of motor more convenient and safe, also convenient maintenance and replacement, the motor push rod forms a compact integral structure, simplifies the installation process, improves the stability and reliability of whole. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments in the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0020] Figure 1 It is the structure schematic diagram of integral brushless motor power push rod in the embodiment of the utility model;

[0021] Figure 2 It is the structure schematic diagram of circuit board group in the embodiment of the utility model;

[0022] Figure 3 It is the top view of integral brushless motor power push rod in the embodiment of the utility model;

[0023] Figure 4 for Figure 3 the sectional view at A-A;

[0024] Figure 5 for Figure 3 the sectional view at B-B.

[0025] Reference signs: 10, driving part; 11, end cover; 11a, hollow cavity; 11b, assembly opening; 12, motor group; 121, base; 122, stator; 122a, stator core; 122b, winding; 123, rotor; 123a, rotating shaft; 123b, bearing; 123c, moving core; 13, circuit board group; 131, board body; 131a, welding gap; 132, control socket; 133, power supply socket; 134, electrolytic capacitor; 20, transmission part; 21, shell; 211, first subpart; 211a, first assembly head; 212, second subpart; 212a, second assembly head; 22, gear plate; 23, transmission shaft; 30, moving part; 31, fixed section; 32, telescopic section; 33, limiting block; 33a, step surface. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0027] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for illustration only and are not intended to be limiting.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] As Figures 1 to 5 shown in the drawings, the integrated brushless motor power push rod comprises a driving part 10, a transmission part 20 and a moving part 30; the driving part 10 and the moving part 30 are respectively located at two ends of the transmission part 20 and are connected through the transmission part 20;

[0030] The driving part 10 comprises an end cover 11, a motor set 12 and a circuit board set 13, the end cover 11 is provided with an opening on one side, a hollow cavity 11a is formed in the inside, the opening end of the end cover 11 is fixedly connected with the transmission part 20, the motor set 12 and the circuit board set 13 are fixedly arranged in the hollow cavity 11a, and the circuit board set 13 is located at one end of the hollow cavity 11a away from the opening;

[0031] The circuit board set 13 comprises a board body 131, a control socket 132 and a power supply socket 133 welded on the board body 131, the board body 131 is fixedly connected with the motor set 12, the control socket 132 and the power supply socket 133 are located on the side of the board body 131 away from the motor set 12 and are arranged close to the edge of the hollow cavity 11a; an assembly opening 11b is formed through the side wall of the end cover 11 opposite to the control socket 132 and the power supply socket 133, and one end of the control socket 132 and the power supply socket 133 is clamped in the assembly opening 11b.

[0032] The utility model discloses a brushless motor is used as power source, avoids the friction and abrasion of carbon brush and commutator in brush motor, reduces the generation of electric spark, thereby improves the efficiency and service life of motor push rod, the circuit board set 13 is fixedly connected with the motor set 12, and the design of control socket 132 and power supply socket 133 makes the control and power supply of motor more convenient and safe, also is convenient for maintenance and replacement, and the motor push rod forms a compact integrated structure as a whole, simplifies the installation process, improves the stability and reliability of whole.

[0033] In use, the power supply socket 133 provides power to the circuit board set 13 to activate the motor push rod, and the control socket 132 sends control signals to the circuit board set 13, which may include start, stop, speed and direction instructions, so that the motor set 12 performs different work according to different control signals, and the transmission part 20 converts the rotary motion of the motor set 12 into the linear motion of the moving part 30, so as to realize the different functions of the push rod such as pushing, pulling, supporting and loading.

[0034] On the basis of the above embodiment, the board body 131 is also welded with an electrolytic capacitor 134, and the electrolytic capacitor 134 is arranged adjacent to the power supply socket 133; the electrolytic capacitor 134 can smooth the voltage fluctuation on the power line, provide stable power supply for the brushless motor, protect the sensitive elements in the circuit from damage, and ensure the stability and reliability of the motor operation.

[0035] On the basis of the above embodiment, the plate body 131 is provided with three welding notches 131a on the side edge opposite to the control socket 132 and the power supply socket 133, the welding notches 131a are semicircular arcs, each welding notch 131a is connected with an electric connection wire for connecting the three-phase line of the motor set 12; the semicircular arc-shaped welding notches 131a make it more convenient to access the electric connection wire, and the electric wire can be easily connected to the elements on the circuit board through the notches, so that the layout of the electric wire is more orderly and beautiful, and the maintenance operation is more convenient and fast.

[0036] On the basis of the above embodiment, the motor set 12 includes a base 121, a stator 122 and a rotor 123 coaxially arranged, the plate body 131 is fixedly arranged on one side of the base 121, one end of the rotor 123 is rotatably connected to the middle part of the base 121 from the other side of the base 121, the other end is rotatably connected to the transmission part 20, the stator 122 is sleeved on the outer side of the rotor 123, and the two ends are respectively abutted with the base 121 and the transmission part 20; the abutted arrangement of the stator 122 with the base 121 and the transmission part 20 provides stable support, enhances the stability and reliability of the motor set 12; after the motor receives the control signal, the magnetic field generated by the stator 122 forms electromagnetic action with the rotor 123, so that the rotor 123 generates rotary motion and is transmitted to the moving part 30 through the transmission part 20, realizing the linear motion of the moving part 30.

[0037] On the basis of the above embodiment, the stator 122 includes a stator core 122a and a plurality of windings 122b, the stator core 122a is clamped and fixed between the base 121 and the transmission part 20, the windings 122b are arranged in the hollow cavity 11a and located at both ends of the stator core 122a, and are arranged at equal intervals around the rotor 123; the windings 122b of the stator 122 are arranged at equal intervals around the rotor 123, which can generate a uniform magnetic field, thereby generating efficient torque on the rotor 123, so that the linear motion of the moving part 30 is smoother.

[0038] On the basis of the above embodiment, the rotor 123 includes a rotating shaft 123a, a bearing 123b and a moving core 123c, the moving core 123c is sleeved on the rotating shaft 123a and is located at the same height level as the stator core 122a, the bearing 123b is provided with two and is sleeved on both ends of the rotating shaft 123a, the rotating shaft 123a is rotatably connected with the base 121 and the transmission part 20 through the bearing 123b; the moving core 123c is located at the same height level as the stator core 122a, which helps to ensure the alignment of the magnetic field of the motor, thereby realizing high-precision positioning and control, the bearing 123b can bear the load of the moving core 123c during rotation, while reducing friction, thereby reducing vibration and noise of the rotating shaft 123a during rotation, providing smoother operation and prolonging the service life of the motor push rod.

[0039] On the basis of the above embodiment, the transmission part 20 comprises a housing 21, a gear disc 22 and a transmission shaft 23 arranged in the housing 21, the axis of the transmission shaft 23 is arranged perpendicular to the axis of the rotating shaft 123a, the gear disc 22 is sleeved on one end of the transmission shaft 23, the rotating shaft 123a is rotatably connected with the bottom of the housing 21 through a bearing 123b, the end of the bearing 123b extends into the housing 21, and a helical tooth is arranged on the outer shaft surface of the extended section of the rotating shaft 123a, the helical tooth is arranged in meshing with the outer shaft surface of the gear disc 22; the axis of the transmission shaft 23 is arranged perpendicular to the axis of the rotating shaft 123a, so that the rotary motion of the motor can be transmitted vertically through the gear disc 22 and the transmission shaft 23, thereby converting into the linear motion of the moving part 30, the structure is compact and saves space; the helical tooth on the rotating shaft 123a is arranged in meshing with the outer shaft surface of the gear disc 22, which ensures the accuracy of the transmission ratio, improves the transmission accuracy of the overall motor push rod, and reduces errors.

[0040] On the basis of the above embodiment, the housing 21 comprises a first part 211 and a second part 212 which are abutted with each other, the second part 212 is fixedly connected with the motor set 12 as an integrated structure, the end cover 11 is fixedly arranged on the side of the second part 212 away from the first part 211, the first part 211 and the second part 212 are respectively arranged with a first assembly head 211a and a second assembly head 212a on the side opposite to the moving part 30, the first assembly head 211a and the second assembly head 212a are arranged at intervals, and the first assembly head 211a and the second assembly head 212a are both provided with an assembly hole arranged coaxially; the part design of the housing 21 allows modular production and assembly, simplifies the manufacturing process, and facilitates mass production; through the abutment of the first part 211 and the second part 212, the overall stability and rigidity of the housing 21 can be enhanced, the working of the gear disc 22 in the housing 21 is ensured not to be affected by the outside, and the accuracy of the work is ensured; when installing the integrated brushless motor power push rod, the assembly holes on the first assembly head 211a and the second assembly head 212a can be clamped and fixed, so as to ensure the accuracy and firmness of the installation position during the working process.

[0041] On the basis of the above-mentioned embodiments, the moving part 30 comprises a coaxially arranged fixed section 31 and a telescopic section 32, the telescopic section 32 is arranged with a smaller shaft diameter than the fixed section 31, the fixed section 31 is internally hollow, one end is arranged in the shell 21, the other end extends towards the side away from the shell 21, the transmission shaft 23 and one end of the telescopic section 32 are located in the fixed section 31, and the telescopic section 32 is connected with the transmission shaft 23; the fixed section 31 is internally hollow, can accommodate the transmission shaft 23 and the telescopic section 32, and effectively utilizes the internal space; the telescopic section 32 is arranged with a smaller shaft diameter than the fixed section 31, so that the telescopic section 32 can smoothly move in the fixed section 31 along with the rotation of the transmission shaft 23, realize compact linear motion, thereby adjusting the stroke of the push rod, so that the electric push rod can adapt to different working distances and load requirements.

[0042] On the basis of the above-mentioned embodiments, the fixed section 31 is further arranged with a limiting block 33 screwed with the transmission shaft 23, the limiting block 33 is arranged with a stepped surface 33a, the stepped surface 33a is arranged towards the side of the telescopic section 32, the telescopic section 32 is sleeved on the limiting block 33, and the end surface is arranged in abutment with the stepped surface 33a; the stroke of the telescopic section 32 is limited by arranging the limiting block 33, the movement of the telescopic section 32 in the safe and predetermined stroke is ensured, and the stability of the sliding connection of the telescopic section 32 and the fixed section 31 is also ensured when they relatively move, damage caused by excessive telescoping is prevented, and long-term stable operation is ensured.

[0043] Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present utility model, various changes and improvements can be made to the present utility model without departing from the spirit and scope of the present utility model, and these changes and improvements all fall within the scope of the claimed present utility model. The scope of protection of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated brushless motor powered push rod, characterized in that: include: A driving part, a transmission part and a moving part; the driving part and the moving part are respectively located at two ends of the transmission part and are connected through the transmission part; The driving part includes an end cover, a motor group and a circuit board group. The end cover is open on one side and forms a hollow cavity inside. The open end of the end cover is fixedly connected to the transmission part. The motor group and the circuit board group are fixedly arranged in the hollow cavity, and the circuit board group is located at the end of the hollow cavity away from the opening. The circuit board group includes a plate body and a control socket and a power supply socket welded to the plate body. The plate body is fixedly connected to the motor group. The control socket and the power supply socket are both located on a side of the plate body away from the motor group and are arranged close to the edge of the hollow cavity. An assembly port is provided on the side wall of the end cover opposite to the control socket and the power supply socket, and one end of the control socket and the power supply socket is clamped in the assembly port.

2. The integrated brushless motor powered push rod according to claim 1, characterized in that: An electrolytic capacitor is also welded on the board, and the electrolytic capacitor is arranged adjacent to the power supply socket.

3. The integrated brushless motor powered push rod according to claim 1, characterized in that: Three welding notches are provided on one edge of the plate body opposite to the control socket and the power socket. The welding notches are semicircular in shape, and each of the welding notches is connected to an electrical connection line.

4. The integrated brushless motor powered push rod according to claim 1, characterized in that: The motor group includes a coaxially arranged base, a stator and a rotor, the plate body is fixedly arranged on one side of the base, one end of the rotor is rotatably connected to the middle part of the base from the other side of the base, and the other end is rotatably connected to the transmission part, the stator is sleeved on the outer side surface of the rotor, and the two ends are respectively abutted against the base and the transmission part.

5. The integrated brushless motor powered push rod according to claim 4, characterized in that: The stator includes a fixed iron core and a plurality of windings. The fixed iron core is clamped and fixed between the base and the transmission part. The windings are arranged in the hollow cavity, located at both ends of the fixed iron core, and arranged at equal intervals around the rotor.

6. The integrated brushless motor powered push rod according to claim 5, characterized in that: The rotor includes a rotating shaft, a bearing and a moving iron core. The moving iron core is sleeved on the rotating shaft and is located at the same height level as the fixed iron core. Two bearings are provided, which are respectively sleeved at both ends of the rotating shaft. The rotating shaft is rotatably connected to the base and the transmission part through the bearings.

7. The integrated brushless motor powered push rod according to claim 6, characterized in that: The transmission part includes a shell and a gear plate and a transmission shaft arranged in the shell. The axis of the transmission shaft and the axis of the rotating shaft are arranged perpendicular to each other. The gear plate is sleeved on one end of the transmission shaft. The rotating shaft is rotatably connected to the bottom of the shell through the bearing, and the end of the bearing extends and is located inside the shell. The outer shaft surface of the rotating shaft extension section is provided with helical teeth, and the helical teeth are meshed with the outer shaft surface of the gear plate.

8. The integrated brushless motor powered push rod according to claim 7, characterized in that: The shell includes a first section and a second section that are docked with each other, the second section is fixedly connected to the motor group as an integrated structure, the end cover is fixedly arranged on the side of the second section facing away from the first section, and the first section and the second section are respectively provided with a first assembly head and a second assembly head on the side opposite to the moving section, the first assembly head and the second assembly head are spaced apart, and both the first assembly head and the second assembly head have coaxial assembly holes.

9. The integrated brushless motor powered push rod according to claim 7, characterized in that: The moving part includes a coaxially arranged fixed section and a telescopic section, the shaft diameter of the telescopic section is smaller than the shaft diameter of the fixed section, the fixed section is hollow inside, one end is arranged in the shell, and the other end extends toward a side away from the shell, the transmission shaft and one end of the telescopic section are located in the fixed section, and the telescopic section is connected to the transmission shaft.

10. The integrated brushless motor powered push rod according to claim 9, characterized in that: The fixed section is also provided with a limit block threadedly connected to the transmission shaft. The limit block is provided with a step surface, which is arranged toward one side of the telescopic section. The telescopic section is sleeved on the limit block, and the end face is arranged in contact with the step surface.

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