Linear reciprocating motion structure and massage product

Abstract

A linear reciprocating motion structure, comprising a drive part (1) having a reverse double-helix groove (111); a casing (2), the drive part being arranged inside the casing; a sleeve ring (3), sleeved on the casing; and a sliding body, one end thereof being connected to a guide structure B, and the other end thereof being slidably connected into the reverse double-helix groove. The sleeve ring extends in the width direction thereof to form a compensating part (6), the inner wall face of the compensating portion and the inner wall face of the sleeve ring jointly forming a stress-bearing face. The structure enhances the stability of the sleeve ring during linear reciprocating motion, and reduces the possibility of friction between the sleeve ring and the casing, thus finally ensuring the smoothness of the linear reciprocating motion, prolonging the service life of the structure, and lowering noise generated by machinery. Further provided is a massage product having the linear reciprocating motion structure.

Description

A linear reciprocating motion structure and massage product Technical Field

[0001] The present invention belongs to the technical field of linear reciprocating motion drivers, and relates to a technology for maintaining the stability of a linear reciprocating motion structure, and in particular to a linear reciprocating motion structure and a massage product. Background Art

[0002] Linear reciprocating motion is a repetitive up-and-down or back-and-forth linear motion. It is widely found in various mechanical devices. The two opposing motions that make up a single reciprocating cycle are called a stroke.

[0003] In the prior art, linear reciprocating motion can be achieved by driving a drive component with opposing double helical grooves. Specifically, a motor drives a connecting rod to rotate, causing a guide post to slide along the opposing double helical grooves on the rotating rod, driving the telescopic ring and sleeve ring to move, thus achieving linear reciprocating motion.

[0004] Since it is necessary to ensure that the crescent at the bottom of the guide column can smoothly pass through the intersection of the reverse double helical groove, the size of the crescent must be smaller than the groove width of the reverse double helical groove, that is, there is a certain gap between the crescent and the groove edge. This gap directly causes the instability of the sliding state of the crescent, that is, it is very easy to contact and collide with the groove wall of the reverse double helical groove, thereby causing the guide column to shake, and then causing the telescopic ring and the sleeve ring to tilt. As the telescopic ring and the sleeve ring tilt, the inner wall surface of the telescopic ring will rub against the connecting rod, the outer wall surface of the telescopic ring will rub against the inner wall surface of the outer shell, and the inner wall surface of the sleeve will rub against the outer wall surface of the outer shell. Multiple friction points will not only cause the temperature of the structure to rise, thereby reducing its service life, but will also cause the linear reciprocating motion to jam, thereby reducing the stability of the motion.

[0005] Summary of the Invention

[0006] In order to solve the above-mentioned problems in the prior art, the present invention provides a linear reciprocating motion structure.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A linear reciprocating motion structure is provided, comprising a driving component having a reverse double helical groove, and further comprising:

[0009] A housing, wherein the driving component is placed in the housing, wherein a circumferential wall surface of the housing is formed with a guide structure A arranged along the axial direction thereof;

[0010] a collar, sleeved on the housing and at least partially forming a guide structure B that slides with the guide structure A;

[0011] The sliding body is connected to the guiding structure B at one end and slidably connected to the reverse double spiral groove at the other end. When the driving component rotates, the driving block slides along the path of the reverse double spiral groove, and through the guiding structure A, it causes the guiding structure B to perform a linear reciprocating motion along the axis direction of the driving component, thereby driving the collar to move synchronously;

[0012] Wherein, the collar extends in its width direction to form a compensation portion, and the inner wall surface of the compensation portion and the inner wall surface of the collar together form a force-bearing surface, which is used to bear and balance the force acting on the collar and causing the collar to tilt, so as to maintain the stability of the collar during the linear reciprocating motion.

[0013] Preferably, the guiding structure B is provided with an installation station, and one end of the sliding body is connected to the installation station;

[0014] Wherein, the distances from the center of the installation station to the two ends of the guiding structure B are A and B respectively, and the values of A and B are equal or not equal.

[0015] Preferably, the force-bearing surface is the first inner ring surface, and the outer wall surface of the outer shell is the first outer ring surface;

[0016] And the distance between the first inner ring surface and the first outer ring surface is L1;

[0017] The guiding structure B has at least two arc surface structures on the same toroidal surface as the second inner ring surface, and the outer wall surface of the driving component is the second outer ring surface;

[0018] And the distance between the second inner ring surface and the second outer ring surface is L2;

[0019] Wherein, L1 < L2.

[0020] Preferably, when L1 < L2, L1 and L2 satisfy the following formula:

[0021] L1 = L2 - K, where K is a constant, and the value range of K is 0.1 to 0.2 mm.

[0022] Preferably, the guiding structure A is a pair of guiding grooves opened along the circumferential wall surface of the outer shell, and the guiding structure B is a pair of guiding blocks connected to the collar, and the guiding blocks and the guiding grooves are in sliding fit;

[0023] Wherein, a key groove is arranged along the length direction at the root of the guiding block. When the guiding block is assembled into the guiding groove, the key groove engages with the groove edge of the guiding groove.

[0024] Preferably, when a key groove is arranged at the root of the guiding block:

[0025] The compensation portion is missing, and the stability maintaining effect of the force-bearing surface is replaced by the interaction between the inner groove surface of the key groove and the groove edge of the guiding groove; or

[0026] The compensation portion is not missing, and the stabilizing effect of the force-bearing surface is jointly borne by the plane formed by the inner wall surface of the compensation portion and the inner wall surface of the ring, and the interaction between the inner groove surface of the keyway and the groove edge of the guide groove.

[0027] Preferably, the sliding body comprises a crescent body and a connecting rod, the connecting rod is assembled to the installation station, and the crescent body is slidably connected to the reverse double helical groove to slide along the path of the reverse double helical groove;

[0028] The connecting rod is flexibly connected to the installation station and / or at least a portion of the connecting rod forms a deformable structure.

[0029] Preferably, the flexible connection is a spring connection, an elastic rod connection or a spring rod connection; and / or

[0030] The deformation structure is a cross groove or a straight groove provided at the end of the connecting rod, or a ring-shaped notch is provided on part of the rod body of the connecting rod.

[0031] Preferably, a plurality of receiving grooves are provided on the circumferential wall surface of the collar, and a plurality of balls are rollingly connected in the receiving grooves.

[0032] Preferably, the volume of the ball is V, the volume of the ball exposed in the receiving groove is V1, and V1 satisfies: V1<1 / 2V.

[0033] The present invention also provides a massage product, comprising: a linear reciprocating motion structure as described in any one of the above technical solutions.

[0034] The present invention provides a linear reciprocating motion structure and a massage product, and the beneficial effects of the present invention are embodied in:

[0035] A compensation portion is added in the width direction of the collar. The inner wall surface of the compensation portion and the inner wall surface of the collar together constitute a force-bearing surface, that is, the area bearing the force generated by the collision of the sliding body is increased, thereby making the pressure distribution more uniform, increasing the collar's resistance to the force, thereby enhancing the collar's stability in linear reciprocating motion, reducing the possibility of friction between the collar and the housing, and ultimately ensuring the smoothness of the linear reciprocating motion, extending the service life of the structure and reducing the noise generated by the machine;

[0036] The position of the sliding body installation station has been optimized and adjusted to achieve the adjustment of the guide structure B with a longer lever arm end, thereby reducing the long-term friction between the guide structure B and the rotating rod. In addition, the end with a shorter lever arm needs to receive a greater force transmitted by the sliding member before friction with the rotating rod occurs, thereby improving the stability of the collar and guide structure B during a single-directional linear motion process.

[0037] When the guide block moves linearly along the guide groove and swings under force, the guide groove's edges and the inner wall of the keyway interact to offset or balance the swinging force on the guide block, thereby correcting the guide block's posture and maintaining its tendency to maintain stable movement. Therefore, the force-bearing surface can work together with the guide groove to achieve better stability for the guide block. Alternatively, by eliminating the compensation portion, the area of ​​the force-bearing surface is reduced, and the resulting excess force is borne by the interaction between the inner groove surface of the keyway and the guide groove's edges. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG1 is an exploded view of the linear reciprocating motion structure proposed by the present invention;

[0039] FIG2 is a front view of the linear reciprocating motion structure proposed by the present invention;

[0040] FIG3 is a front half-sectional view of the linear reciprocating motion structure proposed by the present invention;

[0041] FIG4 is a schematic diagram showing the connection relationship between the collar, the compensation portion, the guide structure B and the rotating rod in the linear reciprocating motion structure proposed by the present invention;

[0042] Figure 5 is a front view of Figure 4;

[0043] FIG6 is a schematic diagram of the structure of a collar in the linear reciprocating motion structure proposed by the present invention (including a compensation portion);

[0044] FIG7 is a half-section view of the collar in the linear reciprocating motion structure proposed by the present invention;

[0045] FIG8 is a partial enlarged schematic diagram of point A in FIG7 (the flexible connection is a spring structure);

[0046] FIG9 is a partial enlarged schematic diagram of the sliding body in the linear reciprocating motion structure proposed by the present invention (the deformation structure is a ring-shaped notch);

[0047] FIG10 is a perspective view of a sliding body in a linear reciprocating motion structure according to the present invention (the deformation structure is a cross groove);

[0048] FIG11 is a second perspective view of the sliding body in the linear reciprocating motion structure proposed by the present invention (the deformation structure is a straight groove);

[0049] FIG12 is a second structural diagram of the collar in the linear reciprocating motion structure proposed by the present invention (missing compensation portion);

[0050] FIG13 is a perspective view of the linear reciprocating motion structure proposed by the present invention (assembly housing A);

[0051] FIG14 is a top view of FIG13 (assembly housing A);

[0052] FIG15 is a side half-sectional view of FIG13 (assembly housing A);

[0053] FIG16 is a perspective view of a massage product with a linear reciprocating motion structure according to the present invention;

[0054] FIG17 is a schematic diagram showing the positional relationship between the first inner annular surface (force-bearing surface) and the first outer annular surface, and between the second inner annular surface and the second outer annular surface in the linear reciprocating motion structure proposed by the present invention;

[0055] FIG18 is a schematic diagram of the lever arm (LA=LB) of the linear reciprocating motion structure proposed by the present invention, in which the installation station is located at the center of the guide structure B;

[0056] FIG19 is a schematic diagram of the lever arm (LA>LB) of the linear reciprocating motion structure proposed by the present invention, in which the installation station is located on one side of the center position of the guide structure B;

[0057] FIG20 is a schematic diagram of the lever arm of the linear reciprocating motion structure proposed by the present invention, in which the installation station is located on one side of the center of the guide structure B and is in an inclined state (LA>LB);

[0058] FIG21 is a schematic diagram of the force arm (LA) of the installation station on the other side of the center position of the guide structure B in the linear reciprocating motion structure proposed by the present invention. <LB);

[0059] FIG22 is a schematic diagram of the force arm (LA) of the linear reciprocating motion structure proposed by the present invention, wherein the installation station is located on the other side of the center of the guide structure B and is in an inclined state. <LB);

[0060] FIG23 is a schematic diagram of the structure of the ball in the linear reciprocating motion structure proposed by the present invention (the exposed volume of the ball V1<1 / 2V).

[0061] Description of Reference Numerals

[0062] Driving component; 11. Rotating rod; 111. Having reverse double helical groove; 1111. Connecting section; 112. Second outer annular surface; 2. Outer shell; 21. Shell A; 211. First installation space; 22. Shell B; 221. Second installation space; 23. First outer annular surface; 3. Ring; 41. Guide structure A; 42. Guide structure B; 421. Installation station; 422. Second inner annular surface; 423. Keyway; 5. Sliding body; 51. Crescent body; 52. Connecting rod; 6. Compensating part; 61. Force-bearing surface; 7. Flexible connection; 8. Deformation structure; 9. Receiving groove; 901. Ball; 10. Massage product. DETAILED DESCRIPTION

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0064] Please refer to Figures 1 to 23 , the specific embodiments provided by the present invention are as follows:

[0065] As shown in FIG1 to FIG5 , the first embodiment of the present invention provides a linear reciprocating motion structure, including a driving component 1 having a reverse double helical groove 111, and further comprising:

[0066] A housing 2, wherein the driving component 1 is placed in the housing 2, wherein a guide structure A41 arranged along the axial direction of the housing 2 is formed on the circumferential wall surface of the housing 2;

[0067] a collar 3, sleeved on the housing 2, and at least partially forming a guide structure B42 that slides with the guide structure A41;

[0068] The sliding body 5 has one end connected to the guide structure B42 and the other end slidably connected in the reverse double helical groove. When the driving component 1 rotates, the driving block slides along the path of the reverse double helical groove and, through the guide structure A41, causes the guide structure B42 to perform linear reciprocating motion along the axis of the driving component 1, driving the collar 3 to move synchronously.

[0069] Among them, the ring 3 extends along its width direction to form a compensation portion 6, and the inner wall surface of the compensation portion 6 and the inner wall surface of the ring 3 together constitute a force-bearing surface 61. The force-bearing surface 61 is used to bear and balance the force acting on the ring 3 and causing the ring 3 to tilt, so as to maintain the stability of the ring 3 during the linear reciprocating motion.

[0070] As shown in Figures 3 and 4, in this embodiment, the drive component 1 comprises a driver and a rotating rod 11. The rotating rod 11 has a double helical groove defined along its circumferential surface and along its axis. When the driver's driving end rotates, it drives the rotating rod 11, forcing the slider 5 to slide along the path of one of the double helical grooves. This in turn drives the guide structure B42 to perform positive linear motion within the guide structure A41 along the axis of the rotating rod 11 (positive linear motion, in this embodiment, is defined as the linear motion of the component moving away from the driver), thereby simultaneously driving the collar 3 to perform consistent positive linear motion. When the slider 5 slides to the end of this spiral groove, it enters the connecting section 1111 between the two spiral grooves and transitions to the path of the other spiral groove. Because the two spiral grooves have opposite helical directions, this drives the guide structure B42 to perform negative linear motion within the guide structure A41 along the axis of the rotating rod 11 (negative linear motion, in this embodiment, is defined as the linear motion of the component moving toward the driver). The above process illustrates how the structure achieves linear reciprocating motion.

[0071] As shown in Figures 13 to 15, the housing 2 is composed of a shell A21 and a shell B22. One end of the shell A21 and the shell B22 form a detachable connection structure. A first installation space 211 is formed in the shell A21 for installing the driving member in the driving component 1. A second installation space 221 is formed in the shell B22 for installing the rotating rod 11 in the driving component 1. The shell A21 can be composed of two half shells that are fastened together, and the same is true for the shell B22. This ensures the shell's easy disassembly and facilitates replacement or maintenance of the internal structure of the shell.

[0072] As shown in Figures 4 to 6, the ring 3 is sleeved on the axial direction of the shell B22 in a clearance fit manner. The ring 3 is composed of two half rings with the same structure. The two half rings can be buckled together to form a complete ring 3. When the ring 3 needs to be disassembled or installed, the two half rings are separated to complete the quick and convenient disassembly and assembly of the ring 3.

[0073] As shown in Figures 6 and 7, the guide structure A41 and the guide structure B42 constitute a guide structure for linear reciprocating motion. The guide structure A41 is arranged on the circumferential wall of the shell B22 and is arranged along the axial direction of the shell B22. Preferably, the guide structure A41 is a groove body that passes through the wall of the shell B22. The number of the groove body can be multiple, preferably an even number, and is opened on the wall of the shell B22 in a symmetrical manner. Correspondingly, the guide structure B42 is preferably a guide block, and the top surface of the guide block is a curved surface formed by extending the collar 3 in the width direction. The side wall surface of the guide block forms a sliding fit with the groove edge of the groove body. When the guide block moves, the groove edge of the groove body can provide a restraining force on the side wall surface of the guide block so that the guide block moves according to a preset path. The preset path is usually understood to be a path consistent with the length direction of the groove body. The bottom surface of the guide block is an arc-shaped surface, and the curvature of the arc-shaped surface is close to or consistent with the circumferential curvature of the rotating rod 11. When the guide block tilts, the arc-shaped surface and the circumferential wall surface of the rotating rod 11 are in close or complete contact, ensuring that the friction force is evenly distributed on the arc-shaped surface, avoiding the problem of uneven force on the arc-shaped surface caused by partial gaps between the arc-shaped surface and the circumferential wall surface of the rotating rod 11. In addition, the number of guide blocks is consistent with the number of grooves, ensuring that the guide blocks exert a uniform guiding force on the collar 3, thereby improving the smoothness of the collar 3's linear reciprocating motion.

[0074] As shown in Figures 7 to 11, one end of the sliding body 5 is connected to the guide structure B42, and the other end is slidably connected in the reverse double helical groove. Its movement process and driving principle are as described above and will not be repeated here. It should be noted that, preferably, the end of the sliding body 5 is in a form of movable connection with the guide structure B, but the degree of mobility must simultaneously meet the following conditions: 1. A certain restraining force can be applied to the end of the sliding body 5 to ensure that the sliding body 5 does not slide in a direction deviating from the reverse double helical groove path, thereby reducing the possibility of collision between the sliding body 5 and the reverse double helical groove wall; 2. The end of the sliding body 5 can be allowed to rotate slightly (the rotation angle can be adjusted according to actual conditions), so that after the sliding body 5 collides with the reverse double helical groove wall, the force generated by the collision is consumed by the slight rotation, thereby reducing the swing of the sliding body 5 and adjusting it to the correct path.

[0075] As shown in Figures 1 to 7 , based on the above, this embodiment further adds a compensating portion 6. The compensating portion 6 is an annular structure formed by the collar 3 extending along its width direction. The inner wall surface of the compensating portion 6 and the inner wall surface of the collar 3 are in the same plane and together constitute a force-bearing surface 61. It is foreseeable that in the prior art, when the sliding body 5 is shaken or rocked by a collision, the force generated by the collision is transmitted to the collar 3, and this part of the force is borne and shared by the inner wall surface of the collar 3. When the inner wall surface of the collar 3 bears this part of the force alone, due to the limitation of the area size, the collar 3 will be tilted significantly, and friction with the circumferential wall surface of the housing 2 will occur. In this technical solution, the force is shared by the inner wall surface of the collar 3 and the inner wall surface of the compensating portion 6, that is, it is carried and balanced by the force-bearing surface 61. Because the collar 3 is no longer limited to solely bearing the applied force, the area of ​​the force-bearing surface 61 receiving the applied force is increased, thereby enabling a more even distribution of the applied force. This weakens the impact of the applied force on the collar 3, thereby improving the operational stability of the collar 3 and reducing friction with the circumferential wall of the housing 2. Furthermore, due to the improved stability of the collar 3, this technical solution eliminates the transmission structure (telescopic ring and guide post) used in the prior art, thereby avoiding friction between the transmission structure and the rotating rod 11.

[0076] The second embodiment of the present invention provides a linear reciprocating motion structure. Based on the first embodiment, the guide structure B42 is provided with an installation station 421, and one end of the sliding body 5 is connected to the installation station 421;

[0077] The distances between the center of the installation station 421 and the two ends of the guide structure B42 are A and B respectively, and the values ​​of A and B are equal or unequal.

[0078] As shown in Figures 6 and 7, in this embodiment, the end of the slider 5 is connected to the installation station 421. When the connection point between the slider 5 and the installation station 421 serves as the fulcrum O, the aforementioned parameter A is the lever arm LA at one end of the guide structure B42, and the aforementioned parameter B is the lever arm LB at the other end of the guide structure B42. Therefore, as shown in Figures 18, 19, and 21, the installation station 421 has the following two opening positions:

[0079] 1. The installation station 421 is located at the center of the guide structure B42. At this time, the distance A between one end of the guide structure B42 and the center of the installation station 421 is equal to the distance B between the other end of the guide structure B42 and the center of the installation station 421, that is, the lever arm LA = the lever arm LB.

[0080] 2. The installation station 421 is opened at an eccentric position of the guide structure B42, that is, the distance A between one end of the guide structure B42 and the center position of the installation station 421 is greater than or less than the distance B between the other end of the guide structure B42 and the center position of the installation station 421, that is, the lever arm LA> the lever arm LB or the lever arm LA< the lever arm LB.

[0081] When the length of one lever arm is greater than the other, it means that the longer lever arm experiences greater volatility after encountering less resistance. Specifically, as shown in Figure 20 , when LA is large, the end of guide structure B42 located on the LA lever arm side tilts and rubs against the rotating rod 11. The frictional force represents both resistance and the force acting on the longer lever arm LA. This force helps adjust this end away from the rotating rod 11, thereby regulating guide structure B42 to return to its normal state (a state without friction with the rotating rod 11). This process helps ensure that the longer end of guide structure B42 is more sensitive to resistance when friction occurs, resulting in greater volatility (volatility should be understood as the ease with which the longer lever arm end transitions from a tilted state to its initial state after being affected by friction) relative to the other end, facilitating adjustment of guide structure B42. Conversely, as shown in Figure 22 , when LB is large, the same principles and processes apply. Of course, the distance that the installation station deviates from the guide structure B should be within a reasonable range. When the installation station deviates from the guide structure B by a large distance, it is very easy to cause the two ends of the guide structure B to tilt, thereby causing friction between the guide structure B and the rotating rod. This process deviates from the technical problem to be solved by this technical solution. Therefore, the deviation distance of the installation station should be selected within a small range to avoid the occurrence of the above problems.

[0082] As can be seen, when installation station 421 is configured according to the first scenario, the structure is relatively conventional. Furthermore, since both ends of guide structure B42 are equidistant from the center of installation station 421, a more balanced force can be ensured. When installation station 421 is configured according to the second scenario, adjustment of the guide structure B42 with a longer lever arm can be achieved, thereby reducing prolonged friction between guide structure B42 and rotating rod 11. Furthermore, the shorter lever arm requires a greater force from the sliding member to cause friction with rotating rod 11, thereby improving the stability of collar 3 and guide structure B42 during a single unidirectional linear motion.

[0083] The third embodiment of the present invention proposes a linear reciprocating motion structure. Based on the previous embodiment, the force-bearing surface 61 is the first inner annular surface, and the outer wall surface of the housing 2 is the first outer annular surface 23.

[0084] The distance between the first inner annular surface (force-bearing surface 61) and the first outer annular surface 23 is L1;

[0085] The guiding structure B42 has at least two arc surface structures of the second inner ring surface 422 on the same torus, and the outer wall surface of the driving component 1 is the second outer ring surface 112;

[0086] And the distance between the second inner ring surface 422 and the second outer ring surface 112 is L2;

[0087] Where, L1 < L2.

[0088] As shown in FIG. 17, in this embodiment, since there may be two risks of friction in this structure, that is, the friction between the first inner ring surface (force-bearing surface 61) and the first outer ring surface 23, and the friction between the second inner ring surface 422 and the second outer ring surface 112.

[0089] Therefore, the distance between the first inner ring surface (force-bearing surface 61) and the first outer ring surface 23 is set as L1, and the distance between the second inner ring surface 422 and the second outer ring surface 112 is set as L2.

[0090] When the sliding member transmits the force generated by the collision to the guiding structure B42 and the collar 3, the guiding structure B42 and the collar 3 will perform a swinging action. At this time, L2 is the swing length of the second inner ring surface 422 during the swinging action, and L1 + L2 is the swing length of the first inner ring surface (force-bearing surface 61) during the swinging action.

[0091] It can be known that since L2 is relatively short, that is, the swing length is short, the swing period of the second inner ring surface 422 when it is stressed and swings is short, and the swing response is rapid, that is, it is very easy to rub against the rotating rod 11. And L1 + L2 is relatively long, that is, the swing length is long, so the swing period of the first inner ring surface (force-bearing surface 61) when it is stressed and swings is long, and the swing response is slow, that is, it is not easy to rub against the outer shell 2. When the overall size of the structure, especially the radial height, is fixed, that is, L1 + L2 + n (the thickness of each component) is fixed, the larger L2 is compared with L1, the more the swing length of the second inner ring surface 422 can be increased, so as to more effectively reduce the sensitivity of the second inner ring surface 422 when it is stressed and swings, and then ensure the movement stability of the guiding structure B42 and prevent it from rubbing against the rotating rod 11 relatively easily.

[0092] The fourth embodiment of the present invention proposes a linear reciprocating motion structure, and on the basis of the previous embodiment, when L1 < L2, L1 and L2 satisfy the following formula:

[0093] L1 = L2 - K, where K is a constant, and the value range of K is 0.1 to 0.2 mm.

[0094] In this embodiment, the value range of L1 is: 0.1 - 0.7 mm; L1 can take 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, etc.;

[0095] The value range of L2 is: 0.3-0.8mm; L2 can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, etc.

[0096] Correspondingly, the constant K can fluctuate between 0.1 and 0.2 mm.

[0097] The fifth embodiment of the present invention provides a linear reciprocating motion structure. Based on the previous embodiment, the guide structure A41 is a pair of guide grooves provided along the circumferential wall of the housing 2, and the guide structure B42 is a pair of guide blocks connected to the collar 3. The guide blocks and the guide grooves are in sliding engagement.

[0098] The root of the guide block is provided with a key slot 423 arranged along its length direction. When the guide block is assembled into the guide slot, the key slot 423 engages with the slot edge of the guide slot.

[0099] In this embodiment, as mentioned above, the guide structure A41 is a guide groove, and the guide structure B42 is a guide block.

[0100] As shown in Figure 12, the key slot 423 is located at the base of the guide block. When the guide block is inserted into the guide slot, the key slot 423 gradually approaches the edge of the guide slot and eventually engages with the edge of the guide slot. It should be noted that the key slot 423 is a through slot and is only used to limit the displacement of the guide block in the longitudinal direction to prevent the guide block from making large movements in this direction when subjected to force.

[0101] The sixth embodiment of the present invention proposes a linear reciprocating motion structure. Based on the previous embodiment, when a key groove 423 is provided at the root of the guide block:

[0102] As shown in FIG12 , the compensation portion 6 is missing, and the stabilizing function of the force-bearing surface 61 is replaced by the interaction between the inner groove surface of the key groove 423 and the edge of the guide groove; or

[0103] As shown in Figure 6, the compensation part 6 is not missing, and the stabilizing effect of the force-bearing surface 61 is jointly borne by the plane formed by the inner wall surface of the compensation part 6 and the inner wall surface of the ring 3, as well as the interaction between the inner groove surface of the keyway 423 and the groove edge of the guide groove.

[0104] In this embodiment, when the groove edge of the guide groove is assembled in the key groove 423, the two form a sliding connection.

[0105] When the guide block moves linearly along the guide groove and swings under force, the groove edge of the guide groove and the inner wall surface of the keyway 423 interact to offset or balance the swinging force on the guide block, thereby correcting the guide block's posture and maintaining its tendency to maintain stable movement. Therefore, the force-bearing surface 61 can work together with the guide groove to achieve better stability performance for the guide block. Alternatively, the compensation portion 6 can be eliminated, and the area of ​​the force-bearing surface 61 is reduced. The overflow force caused by the reduction in the force-bearing area is borne by the interaction between the inner groove surface of the keyway 423 and the groove edge of the guide groove.

[0106] The seventh embodiment of the present invention provides a linear reciprocating motion structure. Based on the previous embodiment, the sliding body 5 includes a crescent body 51 and a connecting rod 52. The connecting rod 52 is assembled to the installation station 421. The crescent body 51 is slidably connected to the reverse double helical groove to slide along the path of the reverse double helical groove.

[0107] The connecting rod 52 is flexibly connected 7 to the installation station 421 and / or at least a portion of the connecting rod 52 forms a deformable structure 8.

[0108] As shown in Figures 8 to 11 , in this embodiment, the slider 5 comprises a crescent 51 and a connecting rod 52. The motion path of the crescent 51 is as previously described and will not be further elaborated here. The connecting rod 52 serves to transmit the applied force. The crescent 51 and connecting rod 52 can be integrally formed to enhance the overall strength of the slider 5 and prevent them from fracturing under stress.

[0109] As shown in FIG8 , the connecting rod 52 and the installation station 421 can be connected by a flexible connection 7. When a force that can cause the ring 3 and the guide structure B42 to swing is transmitted, the structure of the flexible connection 7 can absorb some of the energy, thereby weakening the effect of the force on the ring 3 and the guide structure B42, thereby improving the movement stability of the ring 3 and the guide structure B42.

[0110] As shown in Figures 9 to 11, a portion of the connecting rod 52 can be formed into a deformable structure. When a force that could cause the ring 3 and the guide structure B42 to swing is transmitted, the deformable structure 8 partially dissipates the force by deforming, thereby weakening the effect of the force on the ring 3 and the guide structure B42, thereby improving the movement stability of the ring 3 and the guide structure B42.

[0111] The eighth embodiment of the present invention proposes a linear reciprocating motion structure, and based on the previous embodiment, the flexible connection 7 is a spring connection, an elastic rod connection or a spring rod connection; and / or

[0112] The deformation structure 8 is a cross groove or a straight groove provided at the end of the connecting rod 52, or a ring-shaped notch is provided on a part of the rod body of the connecting rod 52.

[0113] In this embodiment, the specific structures of the flexible connection 7 and the deformation structure 8 are respectively given.

[0114] As shown in FIG8 , the end of the connecting rod 52 can be connected to the installation station 421 via a spring, elastic rod, or spring rod. When the force that causes the ring 3 and the guide structure B42 to swing is transmitted to this location, the flexible connection 7 absorbs some of the energy through its elastic properties, thereby weakening the force and mitigating the adverse effects of the force on the ring 3 and the guide structure B42.

[0115] As shown in Figures 10 and 11 , the end of the connecting rod 52 can be provided with a cross slot or a slotted slot. When the force causing the ring 3 and guide structure B42 to swing is transmitted to this portion, the end of the connecting rod 52 can undergo irregular extrusion deformation, thereby dissipating some of the force and weakening the force transmission effect. Alternatively, as shown in Figure 9 , a portion of the connecting rod 52 can be formed with an annular notch. When the force is transmitted to this portion, the portion of the rod with the annular notch undergoes deformation such as twisting to dissipate the force, thereby achieving the purpose of weakening the force.

[0116] In addition, both the flexible connection 7 structure and the deformation structure 8 can allow the connecting rod 52 to rotate axially at a certain angle, so that when the crescent body 51 collides with the groove wall of the reverse double spiral groove, the crescent body 51 can adjust its sliding direction through axial rotation, thereby improving the smoothness of the sliding movement of the crescent body 51, thereby improving the smoothness of the linear reciprocating motion of the ring 3 and the guide structure B42.

[0117] As shown in FIG23 , the ninth embodiment of the present invention proposes a linear reciprocating motion structure, and based on the previous embodiment, a plurality of receiving grooves 9 are provided on the circumferential wall surface of the collar 3 , and a plurality of balls 901 are rollingly connected in the receiving grooves 9 .

[0118] In this embodiment, when the linear reciprocating motion structure is configured for use on a product, as shown in FIG16 , particularly when applied to a massage product 10, the linear reciprocating motion is required to provide a certain amount of somatosensory feedback to the human body. Therefore, a plurality of receiving grooves 9 are provided on the circumferential wall surface of the collar 3, and a plurality of balls 901 are connected in a rolling manner within the receiving grooves 9. When the linear reciprocating motion structure is assembled in the rubber or silicone of the massage product 10, as the collar 3 reciprocates linearly, the balls 901 rub against the silicone or rubber of the massage product 10. On the one hand, rolling friction replaces sliding friction, thereby reducing the friction between the collar 3 and the rubber or silicone, thereby reducing the loss of the rubber or silicone and increasing its service life. On the other hand, when the balls 901 come into contact with the rubber or silicone, they can cause the surface of the rubber or silicone to deform and bulge, thereby cooperating with the linear reciprocating motion to increase the somatosensory sensation of the human body, thereby improving the comfort of the massage product 10.

[0119] The tenth embodiment of the present invention proposes a linear reciprocating motion structure, and based on the previous embodiment, the volume of the ball 901 is V, the volume exposed from the receiving groove 9 is V1, and V1 satisfies: V1<1 / 2V.

[0120] In this embodiment, to prevent ball 901 from falling out of groove 9, the volume V1 of ball 901 exposed from groove 9 must satisfy V1 < 1 / 2V. This means that the volume of ball 901 enclosed by groove 9 is greater than the volume of ball 901 exposed from groove 9. As shown in Figure 23, when ball 901 is in motion, it causes the rubber or silicone to deform, forming a protrusion, thereby massaging the human body.

[0121] Of course, how to select the exposed volume of the ball 901 can be selected and adjusted according to the actual needs of the user, and no specific limitation is made here.

[0122] In the description of the embodiments of the present invention, it needs to be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inside", and "outside" indicate directions or positional relationships.

[0123] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "install," "connect," "connect," and "assemble" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0124] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0125] In describing the embodiments of the present invention, it should be understood that "-" and "~" represent a range between two values, and the range includes the endpoints. For example, "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0126] In describing the embodiments of the present invention, the term "and / or" is used herein to describe a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character " / " is generally used herein to indicate that the associated objects are in an "or" relationship.

[0127] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A linear reciprocating motion structure, comprising a driving component having a reverse double helical groove, characterized in that: Further included are: A housing, within which the driving component is disposed. Wherein, a guiding structure A arranged along the axial direction is formed on the circumferential wall surface of the housing; A collar, sleeved on the housing, and at least partially forming a guiding structure B that slidably cooperates with the guiding structure A; A sliding body, one end of which is connected to the guiding structure B, and the other end is slidably connected to a reverse double helical groove. When the driving component rotates, the driving block slides along the path of the reverse double helical groove, and through the guiding structure A, it causes the guiding structure B to perform a linear reciprocating motion along the axial direction of the driving component, driving the collar to move synchronously; Wherein, a compensation portion is formed by the collar extending along its width direction. The inner wall surface of the compensation portion and the inner wall surface of the collar together form a force-bearing surface, which is used to bear and balance the acting force that acts on the collar and causes the collar to tilt, so as to maintain the stability of the collar during the linear reciprocating motion.

2. The linear reciprocating motion structure according to claim 1, characterized in that: The guiding structure B is provided with an installation station, and one end of the sliding body is connected to the installation station; Wherein, the distances from the center of the installation station to the two ends of the guiding structure B are A and B respectively, and the values of A and B are equal or not equal.

3. The linear reciprocating motion structure according to claim 1 or 2, characterized in that: The force-bearing surface is a first inner ring surface, and the outer wall surface of the housing is a first outer ring surface; And the distance between the first inner ring surface and the first outer ring surface is L1; The guiding structure B at least has a second inner ring surface with two arc surface structures on the same toroidal surface, and the outer wall surface of the driving component is a second outer ring surface; And the distance between the second inner ring surface and the second outer ring surface is L2; Wherein, L1 < L2.

4. The linear reciprocating motion structure according to claim 3, wherein When L1 < L2, L1 and L2 satisfy the following formula: L1 = L2 - K, where K is a constant, and the value range of K is 0.1 to 0.2 mm.

5. The linear reciprocating motion structure according to claim 2, characterized in that: The guiding structure A is a pair of guiding grooves opened along the circumferential wall surface of the housing, and the guiding structure B is a pair of guiding blocks connected to the collar, and the guiding blocks and the guiding grooves are slidably mated; Wherein, a keyway arranged along its length direction is opened at the root of the guiding block. When the guiding block is assembled into the guiding groove, the keyway engages with the edge of the guiding groove.

6. The linear reciprocating motion structure according to claim 5, characterized in that: When a keyway is opened at the root of the guiding block: The compensation portion is missing, and the stability maintaining effect of the force-bearing surface is replaced by the interaction between the inner side groove surface of the keyway and the edge of the guiding groove; or The compensation portion is not missing, and the stability maintaining effect of the force-bearing surface is jointly borne by the plane formed by the inner wall surface of the compensation portion and the inner wall surface of the collar, and the interaction between the inner side groove surface of the keyway and the edge of the guiding groove.

7. The linear reciprocating motion structure according to claim 2, characterized in that: The sliding body includes a crescent body and a connecting rod. The connecting rod is assembled to the installation station, and the crescent body is slidably connected to the reverse double helical groove to slide along the path of the reverse double helical groove; Wherein, the connecting rod is flexibly connected to the installation station and / or at least part of the connecting rod forms a deformation structure.

8. The linear reciprocating motion structure according to claim 7, wherein The flexible connection is a spring connection, an elastic rod connection or a spring rod connection; and / or The deformation structure is a cross groove or a straight groove provided at the end of the connecting rod, or a ring-shaped notch is provided on a part of the rod body of the connecting rod.

9. The linear reciprocating motion structure according to claim 1 or 2, characterized in that: A plurality of receiving grooves are provided on the circumferential wall surface of the sleeve ring, and a plurality of balls are rollingly connected in the receiving grooves.

10. The linear reciprocating motion structure according to claim 9, characterized in that: The volume of the ball is V, the volume of the ball exposed from the receiving groove is V1, and V1 satisfies: V1<1 / 2V.

11. A massage product, characterized in that: include: The linear reciprocating motion structure according to any one of claims 1 to 10.

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