A hollow cup brush motor for the photographic equipment industry

Abstract

The utility model discloses a hollow cup has a brush motor for photography equipment industry, including casing, front end cover, back end cover, magnet fixed sleeve and pivot, magnet fixed sleeve installs on the front end cover, and one end of magnet fixed sleeve is inducted in the casing inside, and one end of pivot is arranged in magnet fixed sleeve, and from the other end of magnet fixed sleeve, the other end of pivot is from back end cover and is taken out, and magnet sleeve is set up on the shaft rod of the extension and is provided with magnet in magnet sleeve, and the outside of back end cover is equipped with PCB installation cover, and PCB installation cover is equipped with PCB board, and the hall sensor is equipped on PCB board, and magnet corresponds with PCB board. The utility model sets up PCB board and sensor on PCB installation cover, and when maintaining, only needs to dismantle the protection cover of the cover on PCB installation cover to maintain PCB, need not to dismantle the front end cover and back end cover of motor to complete maintenance, and the maintenance is convenient and fast.

Description

Technical Field

[0001] This utility model relates to drive devices in the photography equipment industry, and in particular to a hollow cup brushed motor used in the photography equipment industry. Background Technology

[0002] Currently, coreless brushed motors are the most common type of prime mover in machining and daily life. Some coreless brushed motors typically have an encoder connected to one end of the motor shaft to control the motor's rotation angle. An encoder is a rotary sensor that converts rotational displacement into a series of digital pulse signals. Mounted on one end of the motor shaft, it feeds back the motor's rotation signal to the controller, which then controls the rotation of the motor shaft based on the feedback signal. If the encoder is installed outside the motor, it occupies a large space; if it is installed inside, if the encoder fails, the entire motor end cover must be removed, making maintenance very troublesome and repair difficult. Brushed motors without encoders provide no signal feedback and cannot accurately measure the motor's rotational position and speed. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a hollow cup brushed motor for the photography equipment industry.

[0004] The purpose of this utility model is achieved through the following technical solution: a hollow cup brushed motor for the photography equipment industry, including a housing, a front cover, a rear cover, a magnet fixing sleeve, and a rotating shaft. The magnet fixing sleeve is installed on the front cover, one end of the magnet fixing sleeve extends into the housing, one end of the rotating shaft passes through the magnet fixing sleeve and extends out from the other end of the magnet fixing sleeve, and the other end of the rotating shaft passes through the rear cover and a magnet sleeve is fitted on the extended shaft. A magnet is provided inside the magnet sleeve.

[0005] The outer side of the rear end cover is provided with a PCB mounting cover, and a PCB board is provided inside the PCB mounting cover. A Hall sensor is provided on the PCB board, and the magnet corresponds to the PCB board. The Hall sensor and the magnet generate a signal to sense each other, enabling precise positioning.

[0006] As an improvement of the present invention for a hollow cup brushed motor in the photography equipment industry, it also includes a protective cover, which covers the PCB mounting cover and is fixed with screws. The PCB mounting cover has a PCB board mounting step inside, and the PCB board abuts against the PCB board mounting step.

[0007] As an improvement of the hollow cup brushed motor used in the photography equipment industry, the outer side of the rear end cover is provided with a connecting seat, the PCB mounting cover is snapped onto the connecting seat, the middle of the rear end cover is provided with a rear bearing mounting groove, the rear bearing mounting groove is provided with a rear bearing, the bottom of the rear bearing mounting groove is provided with a shaft through hole, and one end of the rotating shaft that mounts the magnet passes through the rear bearing.

[0008] As an improvement of the hollow cup brushed motor used in the photography equipment industry, the present invention provides a commutator through the rotating shaft, and the commutator is in close contact with the carbon brush.

[0009] As an improvement of the hollow cup brushed motor used in the photography equipment industry, the other end of the magnet fixing sleeve is provided with a front bearing mounting groove, a front bearing is provided in the front bearing mounting groove, and one end of the rotating shaft passes through the front bearing.

[0010] As an improvement of the hollow cup brushed motor used in the photography equipment industry, the front end cover has a mounting hole in the middle, and a limiting step is provided on the side wall of the mounting hole. One end of the magnet fixing sleeve passes through the mounting hole into the cavity of the housing. The side of the magnet fixing sleeve is provided with a pushing step, and the pushing step cooperates with the limiting step.

[0011] As an improvement of the hollow cup brushed motor used in the photography equipment industry, this utility model also includes a second magnet and a winding spool. The second magnet is sleeved on the magnet fixing sleeve and is located inside the winding spool, which is accommodated in the cavity of the housing.

[0012] As an improvement of the hollow cup brushed motor used in the photography equipment industry, the end of the housing connected to the front cover is provided with a docking step, and the front cover is embedded in the docking step.

[0013] The beneficial effects of this utility model are as follows: This utility model places the PCB board and sensor on the PCB mounting cover. When the sensor corresponds to the magnet for maintenance, only the protective cover on the PCB mounting cover needs to be removed to repair the PCB. It is not necessary to disassemble the front and rear covers of the motor to complete the repair, making maintenance convenient and quick. This utility model, when used in the photography equipment industry, allows for convenient adjustment of the angle or height of the photography equipment, improving the shooting accuracy. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the present invention;

[0015] Figure 2 This is a cross-sectional view of the magnet fixing sleeve of this utility model;

[0016] Figure 3 This is a sectional view of the front cover of this utility model;

[0017] The attached diagram is labeled as follows: 1. Housing, 2. Front cover, 3. Rear cover, 4. Magnet fixing sleeve, 5. Shaft, 6. Magnet sleeve, 7. Magnet, 8. PCB mounting cover, 9. PCB board, 10. Protective cover, 11. Second magnet, 12. Winding spool, 13. Connecting step, 21. Mounting hole, 22. Limiting step, 31. Connecting seat, 32. Rear bearing mounting slot, 33. Rear bearing, 41. Front bearing mounting slot, 42. Front bearing, 43. Abutting step, 51. Commutator, 52. Carbon brush, 81. PCB board mounting step. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0021] like Figures 1-3As shown, a hollow cup brushed motor for use in the photography equipment industry includes a housing 1, a front cover 2, a rear cover 3, a magnet fixing sleeve 4, and a rotating shaft 5. The magnet fixing sleeve 4 is mounted on the front cover 2, with one end of the magnet fixing sleeve 4 extending into the housing 1. One end of the rotating shaft 5 passes through the magnet fixing sleeve 4 and extends out from the other end of the magnet fixing sleeve 4. The other end of the rotating shaft 5 passes through the rear cover 3, and a magnet sleeve 6 is fitted on the extended shaft. A magnet 7 is provided inside the magnet sleeve 6. The magnet 7 can rotate together with the rotating shaft.

[0022] A PCB mounting cover 8 is provided on the outer side of the rear cover 3, and a PCB board 9 is provided inside the PCB mounting cover 8. A Hall sensor is provided on the PCB board 9, and a magnet 7 corresponds to the PCB board 9. The Hall sensor and the magnet generate a signal to achieve precise positioning. When the magnet 7 mounted on the rotating shaft starts to rotate, the Hall sensor can detect the change in the direction of the magnetic field, thereby determining the rotational position and speed of the motor.

[0023] Preferably, it also includes a protective cover 10, which covers the PCB mounting cover 8 and is fixed with screws. The PCB mounting cover 8 has a PCB board mounting step 81 inside, and the PCB board 9 abuts against the PCB board mounting step 81.

[0024] Preferably, the outer side of the rear end cover 3 is provided with a connecting seat 31, the PCB mounting cover 8 is snapped onto the connecting seat 31, the middle part of the rear end cover 3 is provided with a rear bearing mounting groove 32, the rear bearing mounting groove 32 is provided with a rear bearing 33, the bottom of the rear bearing mounting groove 32 is provided with a shaft through hole 34, and one end of the rotating shaft 5 that mounts the magnet 7 passes through the rear bearing 33.

[0025] Preferably, a commutator 51 is provided on the rotating shaft 5, and the commutator 51 is in close contact with the carbon brush 52.

[0026] Preferably, the other end of the magnet fixing sleeve 4 is provided with a front bearing mounting groove 41, and a front bearing 42 is provided in the front bearing mounting groove 41, and one end of the rotating shaft 5 passes through the front bearing 42.

[0027] Preferably, the front cover 2 has a mounting hole 21 in the middle, and a limiting step 22 is provided on the side wall of the mounting hole 21. One end of the magnet fixing sleeve 4 is inserted into the cavity of the housing 1 through the mounting hole 21. The side of the magnet fixing sleeve 4 is provided with a pushing step 43, which cooperates with the limiting step 22.

[0028] Preferably, it also includes a second magnet 11 and a winding spool 12. The second magnet 11 is sleeved on the magnet fixing sleeve 4 and is located inside the winding spool 12, which is housed in the cavity of the housing 1.

[0029] Preferably, the end of the housing 1 connected to the front cover 2 is provided with a docking step 13, and the front cover 2 is embedded in the docking step 13 for fixation.

[0030] Although 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 alterations can be made to these embodiments without departing from the principles and structure of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hollow cup brushed motor for use in the photographic equipment industry, characterized in that, The device includes a housing, a front cover, a rear cover, a magnet retaining sleeve, and a rotating shaft. The magnet retaining sleeve is mounted on the front cover, with one end of the magnet retaining sleeve extending into the housing. One end of the rotating shaft passes through the magnet retaining sleeve and extends out from the other end of the magnet retaining sleeve. The other end of the rotating shaft passes through the rear cover and a magnet sleeve is fitted on the extended shaft. A magnet is provided inside the magnet sleeve. The outer side of the rear end cover is provided with a PCB mounting cover, and a PCB board is provided inside the PCB mounting cover. A Hall sensor is provided on the PCB board, and the magnet corresponds to the PCB board.

2. The hollow cup brushed motor for the photographic equipment industry according to claim 1, characterized in that, It also includes a protective cover, which covers the PCB mounting cover and is fixed with screws. The PCB mounting cover has a PCB board mounting step inside, and the PCB board abuts against the PCB board mounting step.

3. The hollow cup brushed motor for the photographic equipment industry according to claim 2, characterized in that, The outer side of the rear end cover is provided with a connecting seat, the PCB mounting cover is snapped onto the connecting seat, the middle of the rear end cover is provided with a rear bearing mounting groove, the rear bearing mounting groove is provided with a rear bearing, the bottom of the rear bearing mounting groove is provided with a shaft through hole, and one end of the rotating shaft that mounts the magnet passes through the rear bearing.

4. The hollow cup brushed motor for the photographic equipment industry according to claim 1, characterized in that, A commutator is mounted on the shaft, and the commutator is in close contact with the carbon brush.

5. The hollow cup brushed motor for the photographic equipment industry according to claim 1, characterized in that, The other end of the magnet fixing sleeve is provided with a front bearing mounting groove, and a front bearing is provided in the front bearing mounting groove. One end of the rotating shaft passes through the front bearing.

6. The hollow cup brushed motor for the photographic equipment industry according to claim 1, characterized in that, The front cover has a mounting hole in the middle and a limiting step on the side wall of the mounting hole. One end of the magnet fixing sleeve passes through the mounting hole into the cavity of the housing. The side of the magnet fixing sleeve has a push-off step, which cooperates with the limiting step.

7. The hollow cup brushed motor for the photographic equipment industry according to claim 1, characterized in that, It also includes a second magnet and a winding spool. The second magnet is sleeved on the magnet fixing sleeve and is located inside the winding spool, which is housed in the cavity of the housing.

8. The hollow cup brushed motor for the photographic equipment industry according to claim 1, characterized in that, The end of the housing that connects to the front cover is provided with a mating step, and the front cover is embedded in the mating step.

Images