Integrated reciprocating driving module

Abstract

The utility model discloses an integrated reciprocating driving module, which comprises a motor consisting of a front end cover, an outer shell, a permanent magnet and a rotor, and further comprises a cam, a mounting seat and a rocker arm, the cam is mounted at the output shaft end of the rotor, and is provided with a groove in the circumferential direction; the mounting seat is arranged on the front end cover; the first end of the rocker arm is hinged to the mounting base, the middle is linked with the cam, and the second end forms an output end. According to the utility model, the motor and the transmission mechanism are integrated in the unified frame to form an independent integral module, and the module is assembled into a small electric appliance in an independent module manner, so that the cost is reduced; high-frequency linear swing is achieved through precise matching of a cam groove and a rocker arm shaft, transmission parts are few, transmission efficiency and transmission reliability are high, noise is low, and the rocker arm is suitable for high-frequency reciprocating motion scenes. The transmission mechanism is compactly arranged in the size range of the outer shell, the overall size is reduced, the device is suitable for space-limited scenes, and miniaturization of electric appliances is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely relates to a integrated reciprocating drive module. BACKGROUND

[0002] The working part of some household small electric appliances needs linear reciprocating motion to realize its function, and the commonly used mode is to convert the circular motion of the motor output shaft into reciprocating swing through cam, eccentric connecting rod and other transmission mechanisms. The advantages of this structure are that the product is mature, the performance is stable, and the cost is low, but the transmission mechanism has many parts, obvious vibration and loud noise, and the frequency is obviously limited by the transmission mechanism.

[0003] Another implementation mode is to use a linear motor, and the principle is that when the coil is electrified, the magnetic force drives the oscillating frame with permanent magnets to reciprocate. The linear motor can realize high-frequency vibration and has small noise, but its cost is relatively high, and the reliability of the product is relatively low.

[0004] Therefore, there is an urgent need for a reciprocating drive module that can balance economy and performance. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the existing reciprocating drive module, the utility model provides a integrated reciprocating drive module.

[0006] The technical scheme adopted by the utility model is as follows: a integrated reciprocating drive module, comprising a motor composed of a front end cover, an outer shell, a permanent magnet and a rotor, further comprising: a cam installed at the output shaft end of the rotor, the surface of the cam is provided with grooves parallel in cross section and equal in width along the circumferential direction; a mounting seat provided on the front end cover and close to the circumferential edge of the outer shell; a rocker arm, the first end of which is provided with a rotating shaft hinged in the mounting seat, the middle part of which is provided with a swing shaft assembled in the groove, and the second end forms an output end.

[0007] Preferably, the front end cover and the mounting seat are integrated injection molded parts, and the front end cover is inserted into the outer shell.

[0008] Preferably, the rocker arm is provided with a boss at the shaft hole corresponding to the rotating shaft and the swing shaft.

[0009] Preferably, the output end is a columnar structure with the axis parallel to the rotating shaft.

[0010] Preferably, the rocker arm forms an arc shape with the two ends bending towards the cam.

[0011] Preferably, the rocker arm is divided into two groups and symmetrically arranged on both sides of the cam.

[0012] Preferably, the profile line of the groove is a hyperbola, a sinusoidal curve or a quadratic polynomial curve.

[0013] The utility model has the advantages of the following beneficial effects:

[0014] 1. Modular design: the motor and the transmission mechanism are integrated in a unified frame to form an independent overall module, which can be assembled into a household small electric appliance in the form of an independent module to reduce cost;

[0015] 2. Efficient power conversion and noise reduction: through the precise cooperation of the cam groove and the rocker shaft, the motor rotary motion is converted into high-frequency linear oscillation, the transmission components are few, the transmission efficiency and transmission reliability are improved, the working noise is reduced, and the application scene of high-frequency reciprocating motion is suitable;

[0016] 3. Compact structure: the transmission mechanism composed of the cam and the rocker is compactly arranged in the size range of the outer shell, the large-size components of the traditional transmission mechanism such as the eccentric connecting rod are reduced, the overall volume is reduced, it is suitable for the scene with limited space, and it is beneficial to realize the miniaturization of the electric appliance;

[0017] 4. Dynamic balance vibration reduction: the double rockers are symmetrically arranged, the vibration vector is offset, the whole machine amplitude of the electric appliance product is reduced, and the comfort is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is an appearance schematic view of the utility model embodiment.

[0019] Fig. 2 It is an assembly schematic view of the utility model embodiment.

[0020] Fig. 3 It is a cam and rocker transmission process schematic view in the utility model embodiment.

[0021] Front end cover 1, outer shell 2, permanent magnet 3, rotor 4, cam 5, groove 6, mounting seat 7, rocker 8, rotating shaft 9, swing shaft 10, output end 11, boss 12, rear end cover 13. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the embodiments and the drawings.

[0023] In the embodiment, for example, Figs. 1-3The application discloses an integrated reciprocating drive module, which comprises a motor composed of a front end cover 1, an outer shell 2, a permanent magnet 3 and a rotor 4, and further comprises: a cam 5 installed at the output shaft end of the rotor 4, the surface of the cam 5 is provided with grooves 6 parallel in cross section and equal in width along the circumferential direction; a mounting seat 7 arranged on the front end cover 1 and close to the circumferential edge of the outer shell 2; a rocker arm 8 provided with a rotating shaft 9 hinged in the mounting seat 7 at the first end, a swing shaft 10 assembled in the groove 6 at the middle part and an output end 11 formed at the second end. The motor can adopt a direct current brush motor, the motor driving, the cam 5 driving and the rocker arm 8 output are integrated into a single module, the external driving components are reduced, the module volume is reduced, and the cost is reduced. The rotation movement of the motor is converted into high-frequency linear swing through the precise cooperation between the groove 6 of the cam 5 and the rocker arm shaft 8, the transmission components are few, the transmission efficiency and the transmission reliability are improved, the working noise is reduced, and the application scene of high-frequency reciprocating motion is suitable.

[0024] In the embodiment, the front end cover 1 and the mounting seat 7 are integrated injection molded parts, and the front end cover 1 is inserted into the outer shell 2. Figs. 1-3 The rear end cover 13 can be a plastic part inserted into the outer shell 2 or form an integrated metal shell with the outer shell 2. The front end cover 1 serves as a mounting part of the rotor 4, the mounting seat 7 serves as a mounting part of the rocker arm 8, and the two are integrated, which can improve the assembly accuracy of the cam 5 and the rocker arm 8 and further improve the driving performance.

[0025] In the embodiment, the rocker arm 8 is provided with a boss 12 corresponding to the shaft holes of the rotating shaft 9 and the swing shaft 10. Figs. 1-3 The boss 12 has a large thickness, so it can improve the rigidity and strength of the rocker arm 8 at the connection part and reduce deformation. Moreover, the boss 12 makes the shaft hole have a larger hole depth, and the interference fit of the rotating shaft 9 and the swing shaft 10 ensures that the shaft axis and the rotation center are strictly coaxial, thereby reducing the radial runout error. In addition, the boss 12 can uniformly distribute the load of the rotating shaft 9 and the swing shaft 10 to the rocker arm 8, reduce local stress concentration, and improve fatigue resistance.

[0026] In the embodiment, the output end 11 is a columnar structure with an axis parallel to the rotating shaft 9. Figs. 1-3 The parallel axis design is beneficial to eliminating the lateral force component and making the transmission more stable. The columnar output end 11 increases the contact area and is suitable for high-load scenes.

[0027] In the embodiment, the rocker arm 8 is formed in an arc shape with both ends bending towards the cam 5. Figs. 1-3 The arc-shaped rocker arm 8 makes the whole transmission structure compactly arranged within the size range of the outer shell 2, thereby reducing the overall volume of the module. Moreover, it is also helpful to improve the transmission stability.

[0028] In the embodiment, the output end 11 is a columnar structure with an axis parallel to the rotating shaft 9. Figs. 1-3, the rocker arms 8 are divided into two groups and symmetrically arranged on both sides of the cam 5. The symmetric arrangement of the double rocker arms 8 optimizes the arrangement of components in a compact space, while realizing vibration vector cancellation, reducing the amplitude of the whole electric appliance product, and improving comfort.

[0029] In the embodiment, as Figs. 1-3 The profile line of the groove 6 is a hyperbolic curve, a sinusoidal curve or a quadratic polynomial curve. The groove 6 with different profile lines makes the output end 11 have different motion characteristics, for example, the hyperbolic curve groove realizes uniform acceleration reciprocating motion, the sinusoidal curve provides smooth start and stop, and the quadratic polynomial curve is suitable for intermittent load. By adjusting the profile parameters of the groove 6, the motion characteristics of the output end 11 are selected and optimized to meet the performance requirements of different electric appliance products and different use scenarios.

[0030] Obviously, the above embodiments of the utility model are only examples for illustrating the utility model, and are not a limitation on the embodiments of the utility model. Other obvious changes or changes derived from the essential spirit of the utility model still belong to the protection scope of the utility model.

Claims

1. An integrated reciprocating drive module comprising a motor consisting of a front end cover (1), an outer housing (2), a permanent magnet (3) and a rotor (4), characterized in that, Also include: Cam (5) is installed in the output shaft end of the rotor (4), the surface of the cam (5) is provided with a groove (6) which is parallel and equal width in the circumferential direction; Mounting seat (7) is arranged on the front end cover (1), close to the circumferential edge of the shell (2) is arranged; The rocker arm (8) is provided with a hinge shaft (9) in the mounting seat (7) at the first end, a swing shaft (10) is arranged in the groove (6) at the middle, and the second end forms an output end (11).

2. The integrated reciprocating drive module of claim 1, wherein, The front end cover (1) and the mounting seat (7) are integrated injection molding, and the front end cover (1) is inserted into the shell (2).

3. The integrated reciprocating drive module of claim 1, wherein, The rocker arm (8) is provided with a boss (12) corresponding to the shaft hole of the swing shaft (10) and the swing shaft (10).

4. The integrated reciprocating drive module of claim 1, wherein, The output end (11) is a cylindrical structure with axis parallel to the swing shaft (9).

5. The integrated reciprocating drive module of claim 1, wherein, The rocker arm (8) forms an arc shape with both ends bending towards the cam (5).

6. The integrated reciprocating drive module of claim 1, wherein, The rocker arm (8) is divided into two groups and arranged symmetrically on both sides of the cam (5).

7. The integrated reciprocating drive module of claim 1, wherein, The profile of the groove (6) is a hyperbola, a sinusoidal curve or a quadratic polynomial curve.

Images