Reciprocating motion mechanism and flapping device

Abstract

The utility model discloses a reciprocating motion mechanism which comprises a driving motor, an eccentric wheel and a connecting rod, the eccentric wheel is provided with an eccentric first connecting hole, an output shaft of the driving motor is connected with the first connecting hole, the connecting rod is made of hard materials, one end of the connecting rod is provided with a sleeve hole, the sleeve hole is sleeved on the eccentric wheel, and the eccentric wheel is movably connected with the sleeve hole. When the eccentric wheel rotates, the connecting rod is pulled to horizontally move back and forth in a reciprocating mode through eccentric rotation of the eccentric wheel. The utility model further discloses a flapping device which adopts the reciprocating motion mechanism. Compared with the prior art, the space needed by the reciprocating motion mechanism in the axial direction of the power shaft is saved, miniaturization of the reciprocating motion mechanism is achieved, and due to the fact that structural parts are reduced, production cost is greatly saved.

Description

Technical Field

[0001] The utility model relates to a massager, in particular to a reciprocating motion mechanism and a beating device. Background Art

[0002] At present, the reciprocating massagers currently sold on the market have a reciprocating mechanism including an eccentric wheel, a connecting shaft, and a connecting rod. The connecting shaft and the eccentric wheel are eccentrically arranged, and the connecting rod is linked to the eccentric wheel through the connecting shaft to drive the flapping member connected to the connecting rod to perform reciprocating motion. This type of reciprocating mechanism requires a large space in the axial direction of the power shaft (drive motor output shaft) to prevent the connecting rod from colliding with the inner wall or components of the product when performing reciprocating motion. This will take up a large amount of internal space of the product, resulting in the inability to miniaturize and carry the product, or lead to other restrictive constraints, such as the battery capacity is forced to be reduced, which inevitably leads to a short battery life of the product, and another example is that it is impossible to achieve multi-functions. It is desired to increase the motor to achieve multi-function techniques, but due to the limited appearance and traditional motion mechanism, it is unable to meet the product requirements. Utility Model Content

[0003] The utility model aims to provide a reciprocating motion mechanism and a beating device, and the technical problem to be solved is to reduce the motion space of the reciprocating motion mechanism.

[0004] To solve the above problems, the utility model adopts the following technical solutions: a reciprocating motion mechanism, including a driving motor, an eccentric wheel, and a connecting rod. The eccentric wheel is provided with an eccentric first connecting hole, the output shaft of the driving motor is connected to the first connecting hole, the connecting rod is made of hard material, one end of the connecting rod is provided with a sleeve hole, the sleeve hole is sleeved on the eccentric wheel, and the eccentric wheel is movably connected to the sleeve hole to realize that when the eccentric wheel rotates, the eccentric rotation of the eccentric wheel pulls the connecting rod to reciprocate horizontally back and forth.

[0005] Furthermore, the eccentric wheel is provided with an eccentric second connecting hole, the opening of the second connecting hole and the opening of the first connecting hole are respectively arranged on the opposite end wheel surfaces of the eccentric wheel, and the eccentric wheel is provided with a meson screw threadedly connected to the second connecting hole to limit the connecting rod on the eccentric wheel.

[0006] Furthermore, a bearing is provided between the eccentric wheel and the sleeve hole, the outer ring of the bearing is interference fit with the sleeve hole, and the inner ring of the bearing is interference fit with the eccentric wheel.

[0007] Furthermore, the lower end of the eccentric wheel is provided with a convex edge so that after the inner ring of the bearing and the eccentric wheel are interference fit, the lower end of the bearing abuts against the convex edge.

[0008] The utility model also discloses a beating device, including an inner shell and a flexible outer shell. The reciprocating motion mechanism is arranged in the flexible outer shell. The inner shell is provided with an arc-shaped protrusion. The arc-shaped protrusion is provided with a through hole for a connecting rod to extend. One end of the connecting rod away from the driving motor is connected to the position of the flexible outer shell at the through hole. The eccentric rotation of the eccentric wheel pulls the connecting rod to move horizontally back and forth, causing deformation of the part of the flexible outer shell to achieve a beating effect.

[0009] Furthermore, the flexible outer shell is provided with a connecting protrusion protruding toward the inside of the inner shell at the position of the through hole, and an inner cavity is provided in the connecting protrusion. The end of the connecting protrusion opposite to the connecting rod is provided with a through hole connected to the inner cavity and smaller than the size of the inner cavity. A disc-shaped connecting portion is provided at the end of the connecting rod away from the driving motor, and the connecting portion is provided in the inner cavity of the convex connecting protrusion to connect the connecting rod to the connecting protrusion.

[0010] Furthermore, the surface area of ​​the through hole is larger than the area of ​​the cross section of the connecting rod.

[0011] Compared with the prior art, the utility model adopts a method in which the connecting rod is movably sleeved on the eccentric wheel, and the connecting rod is directly pulled to perform horizontal forward and backward reciprocating motion through the rotation of the eccentric wheel, thereby saving the space required for the reciprocating motion mechanism in the axial direction of the power shaft, realizing the miniaturization of the reciprocating motion mechanism, and greatly saving the production cost due to the reduction of structural parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the reciprocating motion mechanism of the utility model.

[0013] Figure 2 It is a schematic diagram of the exploded structure of the reciprocating motion mechanism of the utility model.

[0014] Figure 3 It is a schematic diagram of the internal structure of the beating device of the utility model. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 and Figure 2As shown, the utility model discloses a reciprocating motion mechanism, including a driving motor 1, an eccentric wheel 2, and a connecting rod 3. The eccentric wheel 2 is provided with an eccentric first connecting hole 4. The output shaft of the driving motor 1 is connected with the first connecting hole 4 to drive the eccentric wheel 2 to rotate eccentrically. The connecting rod 3 is made of hard material. One end of the connecting rod 3 is provided with a sleeve hole 5. The sleeve hole 5 penetrates the upper and lower end surfaces of the connecting rod 3. The sleeve hole 5 is sleeved on the eccentric wheel 2 to reduce the axial space of the output shaft of the driving motor 1. The eccentric wheel 2 is movably connected with the sleeve hole 5 to realize that when the eccentric wheel 2 rotates, the eccentric rotation of the eccentric wheel 2 pulls the connecting rod 3 to reciprocate horizontally back and forth.

[0017] like Figure 2 As shown, a ring body is provided at one end of the connecting rod 3 connected to the eccentric wheel 2, and the sleeve hole 5 is formed by the inner hole of the ring body. By changing the diameter of the eccentric wheel 2, the horizontal forward and backward moving distance of the connecting rod 3 can be changed, thereby changing the amplitude of the beating.

[0018] like Figure 3 As shown, an eccentric second connecting hole 6 is provided on the eccentric wheel 2, and the opening of the second connecting hole 6 and the opening of the first connecting hole 4 are respectively arranged on the opposite end wheel surfaces of the eccentric wheel 2, and a meson screw 7 threadedly connected to the second connecting hole 6 is provided on the eccentric wheel 2 to limit the connecting rod 3 on the eccentric wheel 2, so that when the eccentric wheel 2 rotates, the connecting rod 3 will not separate from the eccentric wheel 2.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, a bearing 8 is provided between the eccentric wheel 2 and the sleeve hole 5 to achieve smoother rotation of the eccentric wheel 2. The specific connection is that the outer ring of the bearing 8 is interference fit with the sleeve hole 5, and the inner ring of the bearing 8 is interference fit with the eccentric wheel 2.

[0020] In the utility model, the lower end of the eccentric wheel 2 is provided with a convex edge 21, and the sleeve hole 5 is a stepped hole, so that after the inner ring of the bearing 8 and the eccentric wheel 2, and the outer ring of the bearing 8 and the sleeve hole 5 are interference fit, the lower end of the bearing 8 abuts against the convex edge 21 and the lower end edge of the sleeve hole 5, thereby limiting the bearing 8.

[0021] like Figure 3As shown, the utility model discloses a flapping device, including an inner shell 10 and a flexible outer shell 11 coated on the outer side of the inner shell 10, the flexible outer shell 11 can be made of elastic silicone material or TPU material, the above-mentioned reciprocating motion mechanism is arranged in the flexible outer shell 11, and conventional components such as batteries, switches and control panels are arranged in the inner shell 10, an arc-shaped protrusion 12 is arranged on the inner shell 10 to form an arc-shaped protrusion on the flexible outer shell 11, and a through hole 13 for a connecting rod 3 to extend is arranged on the arc-shaped protrusion 12, and one end of the connecting rod 3 away from the driving motor 1 is connected to the position of the flexible outer shell 11 at the through hole 13, and the eccentric rotation of the eccentric wheel 2 pulls the connecting rod 3 to move back and forth horizontally, and at the same time, the part of the flexible outer shell 11 is deformed to achieve a flapping effect.

[0022] like Figure 3 As shown, the flexible housing 11 is provided with a connecting protrusion 14 protruding toward the inside of the inner housing 10 at the position of the through hole 13, and an inner cavity is provided in the connecting protrusion 14. The end of the connecting protrusion 14 opposite to the connecting rod 3 is provided with a through hole 15 that is connected to the inner cavity and is smaller than the size of the inner cavity. A disc-shaped connecting portion 16 is provided at the end of the connecting rod 3 away from the driving motor 1. The connecting portion 16 is arranged in the inner cavity of the connecting protrusion 14 to connect the connecting rod 3 to the connecting protrusion 14. Figure 2 It can be seen that the connecting part 16 is a disc, the connecting rod 3 is connected to the center of the connecting part 16, and the inner cavity size of the connecting protrusion 14 can accommodate the connecting part 16. Of course, the size of the inner cavity is preferably adapted to the outer size of the connecting part 16, so that when the connecting rod 3 drives the flexible shell 11 to reciprocate, its flapping feedback is more obvious.

[0023] like Figure 3 As shown, the surface area of ​​the through hole 15 is larger than the cross-sectional area of ​​the connecting rod 3 , thereby leaving an escape space for the connecting rod 3 so that the connecting rod 3 will not touch the hole wall of the through hole 15 during the horizontal back-and-forth reciprocating motion.

[0024] The utility model has the advantages that the connecting rod 3 and the eccentric wheel 2 are sleeved in the axial direction (Z-axis direction) of the driving shaft of the driving motor so that the two overlap, thereby reducing the movement space of the reciprocating motion mechanism, greatly saving space in the Z-axis direction, and reserving sufficient space for product miniaturization or improving battery life.

Claims

1. A reciprocating mechanism, comprising a driving motor (1), an eccentric wheel (2), and a connecting rod (3), characterized in that: The eccentric wheel (2) is provided with an eccentric first connecting hole (4), and the output shaft of the driving motor (1) is connected to the first connecting hole (4). The connecting rod (3) is made of a hard material, and one end of the connecting rod (3) is provided with a sleeve hole (5), which is sleeved on the eccentric wheel (2). The eccentric wheel (2) and the sleeve hole (5) are movably connected to realize that when the eccentric wheel (2) rotates, the eccentric rotation of the eccentric wheel (2) pulls the connecting rod (3) to move back and forth horizontally.

2. The reciprocating mechanism according to claim 1, characterized in that: The eccentric wheel (2) is provided with an eccentric second connecting hole (6), the opening of the second connecting hole (6) and the opening of the first connecting hole (4) are respectively arranged on the opposite end wheel surfaces of the eccentric wheel (2), and a meson screw (7) threadedly connected to the second connecting hole (6) is provided on the eccentric wheel (2) to limit the connecting rod (3) on the eccentric wheel (2).

3. The reciprocating mechanism according to claim 2, characterized in that: A bearing (8) is provided between the eccentric wheel (2) and the sleeve hole (5); the outer ring of the bearing (8) is in interference fit with the sleeve hole (5); and the inner ring of the bearing (8) is in interference fit with the eccentric wheel (2).

4. The reciprocating mechanism according to claim 3, characterized in that: The lower end of the eccentric wheel (2) is provided with a convex edge (21) so that after the inner ring of the bearing (8) and the eccentric wheel (2) are interference-fitted, the lower end of the bearing (8) abuts against the convex edge (21).

5. A beating device, comprising an inner shell (10), characterized in that: It also includes a flexible outer shell (11), in which a reciprocating motion mechanism as described in any one of claims 1 to 4 is provided, the inner shell (10) is provided with an arc-shaped protrusion (12), and the arc-shaped protrusion (12) is provided with a through hole (13) for the connecting rod (3) to extend out, and the end of the connecting rod (3) away from the driving motor (1) is connected to the position of the flexible outer shell (11) at the through hole (13), and the eccentric rotation of the eccentric wheel (2) pulls the connecting rod (3) to move horizontally forward and backward, causing the part of the flexible outer shell (11) to deform, thereby achieving a slapping effect.

6. The beating device according to claim 5, characterized in that: The flexible outer shell (11) is provided with a connecting protrusion (14) protruding toward the inside of the inner shell (10) at the position of the through hole (13); an inner cavity is provided in the connecting protrusion (14); a through hole (15) communicating with the inner cavity and smaller than the size of the inner cavity is provided at the end of the connecting protrusion (14) opposite to the connecting rod (3); a disc-shaped connecting portion (16) is provided at the end of the connecting rod (3) away from the driving motor (1); the connecting portion (16) is provided in the inner cavity of the convex connecting protrusion (14) to achieve connection between the connecting rod (3) and the connecting protrusion (14).

7. The beating device according to claim 6, characterized in that: The surface area of ​​the through hole (15) is greater than the cross-sectional area of ​​the connecting rod (3).

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