Multi-dimensional adjustable drive mechanism for a massager

Abstract

This utility model proposes a multi-dimensional adjustable drive mechanism for a massager, including an angle adjustment module and a radial spacing adjustment module. The angle adjustment module engages with a first arc-shaped gear segment at the bottom of the base and a second arc-shaped gear segment at the U-shaped hinge of the connector. A pivot passes through the base bushing and the connecting hole. An elastic element connects the connector and the pivot. When the elastic element is under tension, the gear disengages for angle adjustment, and it automatically locks upon release. The radial spacing adjustment module has a guide rail groove at the upper end of the base. The bottom slider of the first sliding block engages with the guide rail groove, and the top surface is provided with a first top guide rail, a first rack, and a first through groove. The bottom guide groove of the second sliding block slides with the guide rail. The side wall of the second through groove forms a second rack. The secondary gear of the stepped gear shaft simultaneously engages with the double racks. When the main gear rotates, it drives the two sliding blocks to move linearly along the guide rails in opposite directions or away from each other. The use of an arc-shaped gear lock and a stepped gear and rack transmission structure enables independent dual-dimensional adjustment, making it suitable for massage devices.

Description

Technical Field

[0001] This utility model relates to the field of massager technology, specifically to the driving mechanism of a massager. Background Technology

[0002] Traditional massager drive mechanisms have significant drawbacks: First, angle adjustment is limited. Common hinge structures rely on screws for locking, requiring tools for adjustment and hindering quick operation. While common ball joint mechanisms allow for multi-directional rotation, they lack a reliable locking mechanism and are prone to displacement due to external forces. Second, radial spacing adjustment is lacking, resulting in poor practicality and inadequate massage. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this utility model provides a multi-dimensional adjustable drive mechanism for a massager. The technical solution of this utility model is achieved through the following means: This utility model discloses a multi-dimensional adjustable drive mechanism for a massager, comprising: The base has a first bushing and a second bushing spaced apart at its bottom end, and a first arc-shaped gear segment is provided between the two bushings. The center of the first arc-shaped gear segment has a shaft hole. The connector has a connecting part at one end for connecting the handle and a U-shaped hinge at the other end. The opening of the U-shaped hinge faces the first arc-shaped gear segment. The two side plates of the U-shaped hinge are respectively provided with a first rotating hole and a second rotating hole on the same axis. The bottom of the U-shaped hinge is concave to form a second arc-shaped gear segment that meshes with the first arc-shaped gear segment. The pivot passes sequentially through the first bushing, the first rotating hole, the shaft hole, the second rotating hole, and the second bushing; An elastic element, one end of which is connected to a connector and the other end of which is connected to a pivot; When the elastic element is subjected to axial tension, the second arc-shaped gear segment disengages from the first arc-shaped gear segment, allowing the connecting element to rotate relative to the base around a pivot to adjust the angle. When the axial tension of the elastic element is released, the second arc-shaped gear segment and the first arc-shaped gear segment re-engage, locking the relative rotation between the connecting piece and the base.

[0004] Preferably, the elastic element is a U-shaped elastic member, comprising: The first elastic arm and the second elastic arm extend along the axial direction of the connector and are respectively arranged on the outer and inner sides of the connector. A connecting beam is vertically connected between the first elastic arm and the second elastic arm, and is embedded in the through groove of the connecting part of the connector; The first ring is located at the free end of the first elastic arm and is sleeved on the first end of the pivot; The second ring is located at the free end of the second elastic arm and is fitted onto the second end of the pivot.

[0005] Preferably, the first and second pivot holes of the connector are both elongated oval through holes extending along the axial direction of the connector, so that the pivot can move along the axial direction of the connector within the length range of the elongated oval through hole.

[0006] Preferably, the length L of the elongated through hole of the first and second rotating holes is greater than the meshing depth D of the first and second arc-shaped gear segments in the meshing state. When the elastic element is subjected to axial tension, the distance that the pivot moves along the axis of the connector within the oblong through hole is sufficient to completely disengage the second arc-shaped gear segment from the first arc-shaped gear segment.

[0007] Preferably, the upper end of the base is provided with a first base guide rail groove and a second base guide rail groove that are parallel to each other and spaced apart; The first sliding block has a first base slider that mates with the first base guide rail groove and a second base slider that mates with the second base guide rail groove on its bottom surface. The top surface of the first sliding block is provided with the following parallel features along its length: A first top guide rail, a first rack, and a first through groove located between the first top guide rail and the first rack; The second sliding block is stacked on top of the first sliding block, and its bottom surface is provided with: A first top guide groove that slides in cooperation with the first top guide rail, and a second through groove that is coaxial with the first through hole. A second toothed rack is formed on one side wall of the second through groove along its length. The central gear is a coaxial, integrally formed stepped gear structure, comprising a large-diameter main gear section and a small-diameter auxiliary gear section; The rotating shaft of the central gear passes through the second through slot and the first through slot in sequence and is mounted on the base; In this configuration, the secondary gear of the central gear meshes with both the first rack and the second rack. When the main gear of the central gear rotates, it drives the first sliding block to translate along the first base guide groove and the second base guide groove, and simultaneously drives the second sliding block to translate along the first top guide groove, thereby achieving linear motion of the first sliding block and the second sliding block towards or away from each other.

[0008] Preferably, the bottom surface of the second sliding block is provided with a rack clearance groove extending along its length direction; The rack clearance groove is located on the bottom surface of the second sliding block at a position corresponding to the first rack, so that during the translation process of the first sliding block, the movement trajectory of the first rack and the bottom surface of the second sliding block form a non-contact gap.

[0009] Preferably, the first rack of the first sliding block and the second rack of the second sliding block are located on opposite sides of the length direction of the second through groove, and the tooth surfaces of the first rack, the second rack and the auxiliary gear of the central gear are in the same meshing surface.

[0010] Preferably, the first sliding block has a recessed limiting notch. At the edge of the base, a limiting boss extends upward to form a limiting boss; When the first sliding block is in the initial zero position or fully reset state, the limiting notch and the limiting boss engage with each other to form a mechanical limiting structure, preventing the first sliding block from moving along its translational direction.

[0011] Preferably, a shell cover is fixedly provided at the upper end of the base, and the inner sidewall of the shell cover is recessed to form a locking tooth arc segment; On the base, a clutch gear shaft is provided on the outer side adjacent to the guide rail groove of the first base; The clutch gear shaft is a coaxially integral stepped gear structure, including: a large-diameter locking gear part and a small-diameter transmission gear part; The small-diameter transmission gear section is constantly meshed with the main gear section of the central gear; The large-diameter locking gear selectively engages with the locking tooth arc segment of the housing cover.

[0012] Preferably, a return spring is sleeved on the rotating shaft of the clutch gear shaft; One end of the reset spring abuts against the end face of the small-diameter transmission gear, and the other end abuts against the upper end face of the base; Wherein, the axis of the reset spring is parallel to the axis of rotation of the clutch gear shaft; When the clutch gear shaft is pressed axially, the reset spring is compressed, and the large-diameter locking gear part disengages from the locking tooth arc segment. At this time, rotating the clutch gear shaft can drive the center gear to rotate, thereby adjusting the movement distance of the first sliding block and the second sliding block. When the axial pressure is released, the reset spring pushes the clutch gear shaft to reset, so that the large-diameter locking gear part engages and locks with the locking tooth arc segment.

[0013] The beneficial effects of this utility model are: 1. The axial traction of the elastic element allows the arc-shaped gear segment to quickly disengage, enabling angle adjustment. After the axial traction force is released, it automatically locks, greatly improving the efficiency of angle operation.

[0014] 2. Radial dimension adjustment: The double slider is stacked in layers and driven bidirectionally by a stepped gear shaft. This drives the two sliders to move linearly in opposite directions along the guide rail, thereby achieving radial dimension adjustment of the mechanism. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the multi-dimensional adjustable drive mechanism of Embodiment 1 of this utility model; Figure 2 This is a partial structural schematic diagram of the multi-dimensional adjustable drive mechanism of Embodiment 1 of this utility model; Figure 3 This is a partial structural exploded view of the multi-dimensional adjustable drive mechanism of Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the connecting component structure of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the base bottom structure of the multi-dimensional adjustable drive mechanism of Embodiment 1 of this utility model; Figure 6 This is a cross-sectional view of the multi-dimensional adjustable drive mechanism of Embodiment 1 of this utility model; Figure 7 This is a cross-sectional view of the connecting parts of the multi-dimensional adjustable drive mechanism according to Embodiment 1 of this utility model; Figure 8 This is another exploded schematic diagram of the multi-dimensional adjustable drive mechanism of Embodiment 1 of this utility model; Figure 9 This is a schematic diagram of the shell cover and base of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model in a separated state; Figure 10 This is a schematic diagram of the upper structure of the base of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model; Figure 11 This is a schematic diagram of the first sliding block structure of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model; Figure 12 This is a schematic diagram of the first sliding block of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model from another perspective. Figure 13 This is a schematic diagram of the second sliding block structure of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model; Figure 14 This is a schematic diagram of the second sliding block of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model from another perspective. Figure 15 This is a schematic diagram of the central gear structure of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model; Figure 16 This is a schematic diagram of the clutch gear shaft structure of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model; Figure 17 This is a schematic diagram of the drive motor and housing structure of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model; Figure 18 This is a schematic diagram of the initial position and maximum displacement of the first sliding block of the multi-dimensional adjustable drive mechanism in Embodiment 1 of this utility model; Figure 19 This is an exploded view of the massager according to Embodiment 2 of this utility model; Figure 20 This is an exploded view of the handle assembly, drive mechanism, and flexible inner tube of the massager according to Embodiment 2 of this utility model; Figure 21 This is one of the schematic diagrams of the flexible inner tube of the massager in Embodiment 2 of this utility model; Figure 22 This is the second schematic diagram of the flexible inner tube of the massager in Embodiment 2 of this utility model.

[0017] Figure label: The massager has a multi-dimensional adjustable drive mechanism 100. Base 1; First bushing 11a; Second bushing 11b; First arc-shaped gear segment 12; Shaft hole 121; First base guide rail groove 13a; Second base guide rail groove 13b; Limiting boss 14; Guide grooves 15a, 15b; Limiting post 16; First return spring 17a; Second return spring 17b; Threaded hole 18; Connector 2; Connecting part 21; U-shaped hinge part 22; First rotating hole 23a; Second rotating hole 23b; Second arc-shaped gear segment 24; Pivot 3; Elastic element 4; First elastic arm 41a; Second elastic arm 41b; Connecting beam 42; First ring buckle 43a; Second ring buckle 43b; First sliding block 5; First base slider 51a; Second base slider 51b; First top guide rail 52; First rack 53; First through groove 54; Limiting notch 55; First connecting post 56; First arc-shaped profile surface 57. Second sliding block 6; first top guide groove 61; second through groove 62; second rack 63; rack clearance groove 64; second connecting post 65; second arc-shaped profile surface 66; Center gear 7; main gear section 71; secondary gear section 72; rotating shaft 73; 8. Cover; 81. Locking tooth arc segment; 82. Shoulder; 83. Through hole; 84. Fastener; 85. Motor mounting slot; 86. Positioning slot; Clutch gear shaft 9; Large diameter locking gear section 91; Small diameter transmission gear section 92; Return spring 93; Drive motor 10; shaft output shaft 10a; positioning boss 10b; Handle assembly 200; Flexible inner tube 300; universal operating block 301; first contact block 302; second contact block 303; arc-shaped through groove 304; Jacket 400. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0019] Please see Figure 1 The multi-dimensional adjustable drive mechanism 100 of the massager includes: a base 1, a connector 2, a pivot 3, an elastic element 4, a first sliding block 5, a second sliding block 6, a central gear 7, a housing cover 8, a clutch gear shaft 9, and a drive motor 10.

[0020] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the angle adjustment module structure is as follows: The base 1 has a first bushing 11a and a second bushing 11b spaced apart at its bottom end. A first arc-shaped gear segment 12 is provided between the two bushings. A shaft hole 121 is opened at the center of the first arc-shaped gear segment 12. The axis of the first bushing 11a, the second bushing 11b and the shaft hole 121 are coaxially arranged.

[0021] The connector 2 has a connecting part 21 at one end and a U-shaped hinge part 22 at the other end. The opening of the U-shaped hinge part 22 faces the first arc-shaped gear segment 12 of the base 1. The two side plates of the U-shaped hinge part 22 are respectively provided with a coaxial first rotating hole 23a and a second rotating hole 23b. The bottom of the U-shaped hinge part 22 is concave to form a second arc-shaped gear segment 24 that meshes with the first arc-shaped gear segment 12.

[0022] Pivot 3 passes sequentially through first bushing 11a, first rotating hole 23a, shaft hole 121, second rotating hole 23b and second bushing 11b, and is locked by a pin.

[0023] The elastic element 4 is connected at one end to the connector 2 and at the other end to the pivot 3. When the elastic element 4 is subjected to axial tension, the second arc-shaped gear segment 24 disengages from the first arc-shaped gear segment 12, allowing the connector 2 to rotate relative to the base 1 around the pivot 3 to adjust the angle. When the axial tension of the elastic element 4 is released, the second arc-shaped gear segment 24 re-engages with the first arc-shaped gear segment 12, locking the relative rotation between the connector 2 and the base 1, thereby realizing the angle adjustment of the drive mechanism.

[0024] like Figure 2 and Figure 3 As shown, the elastic member 4 is a U-shaped elastic member, including: a first elastic arm 41a, a second elastic arm 41b, a connecting beam 42, a first ring buckle 43a, and a second ring buckle 43b. The first elastic arm 41a and the second elastic arm 41b extend along the axial direction of the connector 2 and are respectively arranged on the outer and inner sides of the connector 2. The connecting beam 42 is vertically connected between the first elastic arm 41a and the second elastic arm 41b and is embedded in the through groove of the connecting portion 21 of the connector 2. The first ring buckle 43a is disposed at the free end of the first elastic arm 41a and sleeved on the first end of the pivot 3; the second ring buckle 43b is disposed at the free end of the second elastic arm 41b and sleeved on the second end of the pivot 3.

[0025] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the first arc-shaped gear segment 12 and the second arc-shaped gear segment 24 have the same center of curvature, which allows the connecting member 2 to make smooth stepless angle adjustment relative to the base 1 around the pivot 3 when the elastic member 4 is subjected to axial tension XX.

[0026] The first rotating hole 23a and the second rotating hole 23b of the connector 2 are both elongated oval through holes extending along the axial direction of the connector 2, so that the pivot 3 can move along the axial direction of the connector 2 within the length range of the elongated oval through hole.

[0027] like Figure 6 and Figure 7 As shown, the length L of the elongated through holes of the first rotating hole 23a and the second rotating hole 23b is greater than the meshing depth D of the first arc-shaped gear segment 12 and the second arc-shaped gear segment 24 in the meshing state. When the elastic member 4 is subjected to axial tension, the distance by which the pivot 3 moves along the axis of the connector 2 within the elongated through hole is sufficient to completely disengage the second arc-shaped gear segment 24 from the first arc-shaped gear segment 12.

[0028] like Figures 8-16 As shown, the radial spacing adjustment module structure is as follows: like Figure 13As shown, a first base guide groove 13a and a second base guide groove 13b are provided on the upper end of the base 1, which are parallel to each other and spaced apart.

[0029] like Figure 11 and Figure 12 As shown, the first sliding block 5 has a first base slider 51a that cooperates with the first base guide groove 13a and a second base slider 51b that cooperates with the second base guide groove 13b on its bottom surface; the top surface of the first sliding block 5 is provided with the following parallel along the length direction: a first top guide bar 52, a first rack 53, and a first through groove 54 located between the first top guide bar 52 and the first rack 53.

[0030] The first rack 53 of the first sliding block 5 and the second rack 63 of the second sliding block 6 are located on both sides of the length direction of the second through groove 62, and the tooth surfaces of the first rack 53, the second rack 63 and the secondary gear part 72 of the central gear 7 are in the same meshing surface.

[0031] On the first sliding block 5, a limiting notch 55 is recessed at one end away from the first arc-shaped contour surface 57; at the edge of the base 1, a limiting boss 14 extends upward to form a limiting boss. When the first sliding block 5 is in the initial zero position or fully reset state, the limiting notch 55 and the limiting boss 14 engage with each other to form a mechanical limiting structure, preventing the first sliding block 5 from moving along its translational direction.

[0032] like Figure 13 and Figure 14 As shown, the second sliding block 6 is stacked above the first sliding block 5, and its bottom surface is provided with: a first top guide groove 61 that slides with the first top guide rail 52, and a second through groove 62 that is coaxial with the first through groove 54. A second rack 63 is formed on one side wall of the second through groove 62 in the length direction.

[0033] On the bottom surface of the second sliding block 6, there is a rack clearance groove 64 extending along its length direction. The rack clearance groove 64 is located at the position corresponding to the first rack 53 on the bottom surface of the second sliding block 6, so that during the translation process of the first sliding block 5, the movement trajectory of its first rack 53 forms a non-contact gap with the bottom surface of the second sliding block 6.

[0034] like Figure 8 , Figure 9 and Figure 15 As shown, the central gear 7 is a coaxially integral stepped gear structure, including a large-diameter main gear part 71 and a small-diameter secondary gear part 72. The rotating shaft 73 of the central gear 7 passes through the second through groove 62 and the first through groove 54 in sequence and is mounted on the base 1.

[0035] The secondary gear 72 of the central gear 7 meshes with both the first rack 53 and the second rack 63. When the main gear 71 of the central gear 7 rotates, it drives the first sliding block 5 to translate along the first base guide groove 13a and the second base guide groove 13b, and simultaneously drives the second sliding block 6 to translate along the first top guide groove 61, thereby realizing the linear motion of the first sliding block 5 and the second sliding block 6 towards or away from each other.

[0036] like Figure 8 , Figure 9 and Figure 16 As shown, a cover 8 is fixedly mounted on the upper end of the base 1, and the inner sidewall of the cover 8 is recessed to form a locking tooth arc segment 81. A clutch gear shaft 9 is provided on the base 1, adjacent to the outer side of the first base guide groove 13a. The clutch gear shaft 9 is a coaxially integral stepped gear structure, including a large-diameter locking gear portion 91 and a small-diameter transmission gear portion 92. The small-diameter transmission gear portion 92 is constantly meshed with the main gear portion 71 of the center gear 7; the large-diameter locking gear portion 91 selectively meshes with the locking tooth arc segment 81 of the cover 8.

[0037] A return spring 93 is fitted onto the rotating shaft of the clutch gear shaft 9. One end of the return spring 93 abuts against the end face of the small-diameter transmission gear part 92, and the other end abuts against the upper end face of the base 1. The axis of the return spring 93 is parallel to the rotation axis of the clutch gear shaft 9. When the clutch gear shaft 9 is pressed axially, the return spring 93 is compressed, and the large-diameter locking gear part 91 disengages from the locking tooth arc segment 81. At this time, rotating the clutch gear shaft 9 drives the central gear 7 to rotate, thereby adjusting the moving distance of the first sliding block 5 and the second sliding block 6. When the axial pressure is released, the return spring 93 pushes the clutch gear shaft 9 to reset, so that the large-diameter locking gear part 91 engages and locks with the locking tooth arc segment 81.

[0038] like Figure 9 and Figure 16 As shown, the cover 8 is provided with a shoulder 82, and a shaft hole is provided at the center of the lower end of the shoulder 82. The rotating shaft of the clutch gear shaft 9 is inserted into the shaft hole and is clearance-fitted with the shaft hole.

[0039] The lower end face of the shoulder 82 is coplanar with the tooth tip face of the locking tooth arc segment 81; wherein, when the clutch gear shaft 9 is in an unpressed state, the lower end face of the shoulder 82 abuts against the upper end face of the large diameter locking gear part 91, restricting the axial movement stroke of the clutch gear shaft 9, and ensuring that the teeth of the large diameter locking gear part 91 are radially aligned with the tooth grooves of the locking tooth arc segment 81.

[0040] like Figure 1 and Figure 9As shown, at the junction of the base 1 and the cover 8, corresponding to the position of the large-diameter locking gear 91 of the clutch gear shaft 9, a radially open operating window is formed; the tooth tip area of ​​the large-diameter locking gear 91 is exposed outward through the operating window, which facilitates the axial pressing or rotation operation of the large-diameter locking gear 91.

[0041] like Figure 8 , Figure 9 and Figure 10 As shown, guide grooves 15a and 15b are provided on the base 1, adjacent to the first base guide rail groove 13a and the clutch gear shaft 9. A bidirectional limiting post 16 is fixedly provided in the middle of the guide grooves 15a and 15b, with both ends of the limiting post 16 pointing towards the ends of the guide grooves 15a and 15b respectively. A first return spring 17a and a second return spring 17b are symmetrically arranged on both sides of the limiting post 16. One end of the first return spring 17a is connected to the first end of the limiting post 16, and the other end is connected to the inner wall of the first sliding block 5. One end of the second return spring 17b is connected to the second end of the limiting post 16, and the other end is connected to the inner wall of the second sliding block 6. The first return spring 17a and the second return spring 17b generate an anti-elastic force in the compressed state to counteract the displacement tendency of the first sliding block 5 and the second sliding block 6 in the non-driving state.

[0042] Specifically, such as Figure 8 , Figure 11 and Figure 13 As shown, the inner wall of the first sliding block 5 is provided with a first connecting post 56, one end of the first return spring 17a is sleeved on the first connecting post 56, and the other end is sleeved on the first end of the limiting post 16; the inner wall of the second sliding block 6 is provided with a second connecting post 65, one end of the second return spring 17b is sleeved on the second connecting post 65, and the other end is sleeved on the second end of the limiting post 16; wherein, the axis lines of the first return spring 17a, the second return spring 17b and the limiting post 16 are basically coincident.

[0043] like Figures 9-14 As shown, the outer wall of the first sliding block 5 has a first arc-shaped profile surface 57, and the outer wall of the second sliding block 6 has a second arc-shaped profile surface 66. When the first sliding block 5 and the second sliding block 6 are in the initial zero position or fully reset state, the first arc-shaped profile surface 57 and the second arc-shaped profile surface 66, together with the corresponding outer walls of the base 1 and the shell cover 8, form a continuous and smooth arc-shaped outer surface.

[0044] like Figure 9 As shown, the upper edge of the base 1 is provided with three threaded holes 18, the axis of each threaded hole 18 being parallel to the thickness direction of the base 1; the cover 8 is provided with a through hole 83 coaxially aligned with the threaded holes 18; the fastener 84 is a screw, which passes through the through hole 83 and engages with the threaded hole 18. When the screw is tightened, the outer surface of the cover 8 is coplanar with the outer surface of the base 1.

[0045] like Figure 1 and Figure 17 As shown, the drive motor 10 includes an output shaft 10a and positioning bosses 10b located on both sides of the output shaft 10a. The housing cover 8 is provided with a motor mounting groove 85 and positioning slots 86 located on both sides of the motor mounting groove 85. When the positioning bosses 10b of the drive motor 10 are engaged with the positioning slots 86, the output shaft 10a of the drive motor 10 is synchronously connected and fixed to the motor mounting groove 85 of the housing cover 8.

[0046] It should be noted that, as Figure 18 As shown, the maximum displacement S1 of the rotating shaft 73 of the central gear 7 that can move within the first through groove 54 is defined by the length dimension of the first through groove 54; the maximum stroke S2 ​​of the first sliding block 5 that can move relative to the base 1 along its translational direction (i.e., the displacement of part A on the first sliding block 5 between the virtual lines bb and cc) is equal to the maximum displacement S1. Example 2

[0047] Please see Figure 19 and Figure 20 This utility model proposes a massager, comprising: Multi-dimensional adjustable drive mechanism 100; The handle assembly 200 is detachably connected to the connector 2 of the drive mechanism 100 via a quick-connect mechanism; The flexible inner tube 300 covers the base 1 and the connector 2 of the drive mechanism 100; The outer casing 400 completely covers the handle assembly 200, the flexible inner tube 300, and the drive motor 10 of the drive mechanism 100, forming a fully sealed outer surface.

[0048] The outer surface of the flexible inner tube 300, corresponding to the clutch gear shaft 9 of the drive mechanism 100, is provided with a universal operating block 301 for rotating and axially pressing the clutch gear shaft 9.

[0049] like Figure 20 , Figure 21 and Figure 22 As shown, the sidewall of the flexible inner tube 300 is provided with: Corresponding to the movement trajectory of the first sliding block 5 of the drive mechanism 100, a first contact block 302 is integrally formed, and the direction of its free end extension is consistent with the movement direction of the first sliding block 5.

[0050] Corresponding to the movement trajectory of the second sliding block 6 of the drive mechanism 100, a second contact block 303 is integrally formed, and the free end of the contact block extends in the same direction as the movement direction of the second sliding block 6.

[0051] The sidewall of the flexible inner tube 300, corresponding to the rotating hinge area of ​​the connecting piece 2 of the drive mechanism 100 and the base 1, is provided with multiple arc-shaped through grooves 304 to facilitate rotational avoidance in the rotating hinge area.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-dimensional adjustable drive mechanism for a massager, characterized in that, include: The base (1) has a first bushing (11a) and a second bushing (11b) spaced apart at its bottom end. A first arc-shaped gear segment (12) is provided between the two bushings, and a shaft hole (121) is provided at the center of the first arc-shaped gear segment (12). The connector (2) has a connecting part (21) for connecting the handle at one end and a U-shaped hinge part (22) at the other end. The opening of the U-shaped hinge part (22) faces the first arc gear segment (12). The two side plates of the U-shaped hinge part (22) are respectively provided with a coaxial first rotating hole (23a) and a second rotating hole (23b). The bottom of the U-shaped hinge part (22) is recessed to form a second arc gear segment (24) that meshes with the first arc gear segment (12). The pivot (3) passes through the first bushing (11a), the first rotating hole (23a), the shaft hole (121), the second rotating hole (23b), and the second bushing (11b) in sequence; The elastic element (4) is connected at one end to the connector (2) and at the other end to the pivot (3); When the elastic element (4) is subjected to axial tension, the second arc gear segment (24) disengages from the first arc gear segment (12), allowing the connecting element (2) to rotate relative to the base (1) around the pivot (3) to adjust the angle. When the axial tension of the elastic element (4) is released, the second arc-shaped gear segment (24) and the first arc-shaped gear segment (12) re-engage, locking the relative rotation between the connecting element (2) and the base (1).

2. The multi-dimensional adjustable drive mechanism as described in claim 1, characterized in that: The elastic element (4) is a U-shaped elastic element, comprising: The first elastic arm (41a) and the second elastic arm (41b) extend along the axial direction of the connector (2) and are respectively arranged on the outer and inner sides of the connector (2); The connecting beam (42) is vertically connected between the first elastic arm (41a) and the second elastic arm (41b), and is embedded in the through groove of the connecting part (21) of the connector (2); The first ring (43a) is located at the free end of the first elastic arm (41a) and is sleeved on the first end of the pivot (3); The second ring (43b) is located at the free end of the second elastic arm (41b) and is fitted onto the second end of the pivot (3).

3. The multi-dimensional adjustable drive mechanism as described in claim 2, characterized in that: The first rotating hole (23a) and the second rotating hole (23b) of the connector (2) are both elongated oval through holes extending along the axial direction of the connector (2), so that the pivot (3) can move along the axial direction of the connector (2) within the length range of the elongated oval through hole.

4. The multi-dimensional adjustable drive mechanism as described in claim 3, characterized in that: The length (L) of the elongated through hole of the first rotating hole (23a) and the second rotating hole (23b) is greater than the meshing depth (D) of the first arc-shaped gear segment (12) and the second arc-shaped gear segment (24) in the meshing state. When the elastic element (4) is subjected to axial tension, the distance that the pivot (3) moves along the axis of the connector (2) in the oblong through hole is sufficient to drive the second arc gear segment (24) to completely disengage from the first arc gear segment (12).

5. The multi-dimensional adjustable drive mechanism as described in claim 1, characterized in that: The upper end of the base (1) is provided with a first base guide rail groove (13a) and a second base guide rail groove (13b) that are parallel to each other and spaced apart; The first sliding block (5) has a first base slider (51a) that cooperates with the first base guide rail groove (13a) and a second base slider (51b) that cooperates with the second base guide rail groove (13b) on its bottom surface; The top surface of the first sliding block (5) is provided with the following parallel features along its length: A first top guide rail (52), a first rack (53), and a first through groove (54) located between the first top guide rail (52) and the first rack (53); The second sliding block (6) is stacked on top of the first sliding block (5), and its bottom surface is provided with: A first top guide groove (61) that slides with the first top guide rail (52) and a second through groove (62) that is coaxial with the first through groove (54). A second rack (63) is formed on one side wall of the second through groove (62) along its length. The central gear (7) is a coaxially integral stepped gear structure, including a large-diameter main gear part (71) and a small-diameter auxiliary gear part (72); The rotating shaft (73) of the central gear (7) passes through the second through groove (62) and the first through groove (54) in sequence and is mounted on the base (1); In this configuration, the secondary gear (72) of the central gear (7) meshes with both the first rack (53) and the second rack (63). When the main gear (71) of the central gear (7) rotates, it drives the first sliding block (5) to translate along the first base guide groove (13a) and the second base guide groove (13b), and simultaneously drives the second sliding block (6) to translate along the first top guide groove (61), thereby achieving linear motion of the first sliding block (5) and the second sliding block (6) towards or away from each other.

6. The multi-dimensional adjustable drive mechanism as described in claim 5, characterized in that: The bottom surface of the second sliding block (6) is provided with a rack clearance groove (64) extending along its length direction; The rack clearance groove (64) is located at the position corresponding to the bottom surface of the second sliding block (6) and the first rack (53), so that during the translation process of the first sliding block (5), the movement trajectory of its first rack (53) and the bottom surface of the second sliding block (6) form a non-contact gap.

7. The multi-dimensional adjustable drive mechanism as described in claim 6, characterized in that: The first rack (53) of the first sliding block (5) and the second rack (63) of the second sliding block (6) are located on both sides of the length direction of the second through groove (62), and the tooth surfaces of the first rack (53), the second rack (63) and the secondary gear part (72) of the central gear (7) are in the same meshing surface.

8. The multi-dimensional adjustable drive mechanism as described in claim 7, characterized in that: The first sliding block (5) has a recessed limiting notch (55); At the edge of the base (1), a limiting boss (14) extends upward to form; When the first sliding block (5) is in the initial zero position or fully reset state, the limiting notch (55) and the limiting boss (14) are engaged with each other to form a mechanical limiting structure, preventing the first sliding block (5) from moving along its translation direction.

9. The multi-dimensional adjustable drive mechanism as described in claim 8, characterized in that: The upper end of the base (1) is fixedly provided with a shell cover (8), and the inner sidewall of the shell cover (8) is recessed to form a locking tooth arc segment (81); On the base (1), a clutch gear shaft (9) is provided on the outer side adjacent to the first base guide groove (13a); The clutch gear shaft (9) is a stepped gear structure integrally formed on the same axis, including: a large diameter locking gear part (91) and a small diameter transmission gear part (92); The small-diameter transmission gear section (92) is constantly meshed with the main gear section (71) of the center gear (7); The large-diameter locking gear (91) selectively engages with the locking tooth arc segment (81) of the cover (8).

10. The multi-dimensional adjustable drive mechanism as described in claim 9, characterized in that: A return spring (93) is sleeved on the rotating shaft of the clutch gear shaft (9); One end of the reset spring (93) abuts against the end face of the small-diameter transmission gear (92), and the other end abuts against the upper end face of the base (1); The axis of the reset spring (93) is parallel to the axis of rotation of the clutch gear shaft (9); When the clutch gear shaft (9) is pressed axially, the reset spring (93) is compressed, and the large-diameter locking gear part (91) disengages from the locking tooth arc segment (81). At this time, rotating the clutch gear shaft (9) can drive the center gear (7) to rotate, thereby adjusting the moving distance of the first sliding block (5) and the second sliding block (6). When the axial pressure is released, the reset spring (93) pushes the clutch gear shaft (9) to reset, so that the large-diameter locking gear part (91) engages and locks with the locking tooth arc segment (81).

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