Telescopic device and massager

Abstract

The utility model discloses a telescopic device, including drive motor, with drive motor connection's telescopic mechanism, shell, telescopic mechanism includes reciprocating screw rod, slider, be equipped with slider hole on the slider, reciprocating screw rod passes from slider hole, reciprocating screw rod is connected with the output shaft of drive motor, to make reciprocating screw rod when rotating, slider axial linear reciprocating movement is on reciprocating screw rod, be equipped with the first guide in the threaded groove of reciprocating screw rod stem body that inserts in slider hole, be equipped with at least a group of guide assembly on the surface of slider, be equipped with the sleeve on the slider, and the sleeve is connected with slider fixed, and the end of sleeve away from slider stretches out from the shell. The utility model discloses still a kind of massager, including the telescopic device. Compared with prior art, solve the problem of big product volume when reciprocating stroke is long, make product convenient to carry, increase its use scene simultaneously, since product appearance also changes due to its structure change, have greater product design space.

Description

Technical Field

[0001] This utility model relates to a telescopic device and a massager. Background Technology

[0002] Existing massagers (such as fascia guns) and other health massage products that perform telescopic movements generally achieve linear reciprocating motion of their front head by driving an eccentric wheel linkage mechanism via a drive motor. The rotation radius of the eccentric wheel determines the reciprocating stroke. When the reciprocating stroke is long, the product size will increase accordingly. Since the direction of its linear reciprocating motion is perpendicular to the rotation axis of the drive motor, its shape can usually only be made into a cross shape or a large plate-like structure, which makes it unsuitable for users with small hands to operate, causing inconvenience. Moreover, this also results in a large storage space. Utility Model Content

[0003] The purpose of this invention is to provide a telescopic device and a massager to overcome the shortcomings of the prior art.

[0004] To solve the above problems, the present invention adopts the following technical solution: a telescopic device, including a drive motor, a telescopic mechanism connected to the drive motor, and a housing. The drive motor and the telescopic mechanism are disposed in the housing. The telescopic mechanism includes a reciprocating lead screw and a slider. The slider has a slider hole, through which the reciprocating lead screw passes. The reciprocating lead screw is connected to the output shaft of the drive motor so that when the reciprocating lead screw rotates, the slider moves axially linearly back and forth on the reciprocating lead screw. A first guide member is provided in the slider hole and inserted into the threaded groove on the reciprocating lead screw body. At least one set of guide components is provided on the surface of the slider. A sleeve is provided on the slider and is connected and fixed to the slider. The end of the sleeve away from the slider extends out of the housing.

[0005] Furthermore, the guiding assembly includes a second guide member and a guide groove, the guide groove being disposed in the housing and its length covering the stroke of the slider, and the second guide member being disposed on the slider.

[0006] Furthermore, the slider is provided with a first guide groove, one end of the first guide groove is connected to the slider hole, and the other end of the first guide groove penetrates one end surface of the slider. The first guide is provided in the first guide groove, and a clamping member is provided on the first guide. The clamping member is provided with a slider cover that closes the end of the first guide groove away from the slider hole.

[0007] Furthermore, the first guide member includes a base and a crescent-shaped guide block. The curvature of the crescent-shaped arc surface on the guide block is adapted to the curvature of the bottom of the thread groove. The guide block is disposed in the thread groove of the reciprocating screw.

[0008] Furthermore, the second guide is a ball bearing, and a hemispherical groove is provided on the surface of the slider, into which the second guide is embedded.

[0009] Furthermore, the guide assembly is provided in two sets, and the two sets of guide assemblies are arranged opposite to each other.

[0010] Furthermore, the end of the reciprocating screw away from the drive motor extends into the sleeve. The diameter of the rod at the end of the reciprocating screw away from the drive motor is smaller than the diameter of the rest of the reciprocating screw, forming a variable diameter section. A ball bearing guide sleeve is fitted on the variable diameter section, and the surface of the balls on the ball bearing guide sleeve contacts the inner wall of the sleeve and the outer wall of the variable diameter section, respectively.

[0011] Furthermore, a linear bearing is provided outside the sleeve, and the linear bearing is fixed inside the outer shell.

[0012] Furthermore, the housing contains a rechargeable battery and a control board. The control board is equipped with a power indicator light, a switch, and / or a charging connector. The control board is electrically connected to the battery and the drive motor, respectively.

[0013] This utility model also discloses a massager, including a massage head and the aforementioned telescopic device.

[0014] Compared with the prior art, this utility model replaces the existing eccentric wheel linkage mechanism with a reciprocating lead screw and slider in the telescopic mechanism, which solves the problem of large product size when the reciprocating stroke is long, making the product easier to carry and increasing its usage scenarios. Moreover, the product shape is also changed due to the change in its structure, which provides greater product design space. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the external structure of this utility model. Figure 2 .

[0017] Figure 3 This is an exploded view of the present invention.

[0018] Figure 4 This is a schematic diagram of the internal structure of this utility model. Figure 1 .

[0019] Figure 5 This is a schematic diagram of the internal structure of this utility model. Figure 2 .

[0020] Figure 6 This is a schematic diagram of the connection between the ball sleeve and the reciprocating lead screw of this utility model.

[0021] Figure 7This is a schematic diagram of the slider compartment of this utility model. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 5 As shown, this utility model discloses a telescopic device, comprising a drive motor 1, a telescopic mechanism 2 connected to the drive motor 1, and a housing 3, wherein:

[0024] The outer casing 3 consists of four circular sleeves of different lengths tightly connected by connectors to form a linear structure, which includes, in sequence, a circuit compartment 31, a battery and motor compartment 32, a slider compartment 33, and a linear bearing compartment 34. The battery and motor compartment 32 and the slider compartment 33 are tightly connected and fixed by a first flange 35, and a first sealing ring 351 is provided for waterproof sealing. The slider compartment 33 and the linear bearing compartment 34 are tightly connected and fixed by a second flange 36, and a second sealing ring 352 is provided for waterproof sealing. Both the first flange 35 and the second flange 36 have a central hole for the output shaft of the drive motor 1 and the telescopic mechanism 2 to pass through. The circuit compartment 31 and the battery and motor compartment 32, the battery and battery compartment 32, the first flange 35 and the slider compartment 33, and the slider compartment 33, the second flange 36 and the linear bearing compartment 34 are also connected and fixed by adhesive.

[0025] The drive motor 1 is fastened to the first flange 35 by screws. The end of the drive motor 1 away from the first flange 35 is provided with a motor connector 321. The motor connector 321 is annular with one end being a closed surface and the end of the motor connector 321 facing the drive motor 1 being open with a groove inside. The motor connector 321 is tightly fitted onto the drive motor 1.

[0026] The telescopic mechanism 2 is located in the slider compartment 33. The telescopic mechanism 2 includes a reciprocating lead screw 21 and a slider 22. The slider 22 is provided with a slider hole 221. The reciprocating lead screw 21 passes through the slider hole 221 and is connected to the output shaft of the drive motor 1 so that when the reciprocating lead screw 21 rotates, the slider 22 moves axially linearly back and forth on the reciprocating lead screw 21. A first guide member 23 is provided in the slider hole 221 and extends into the threaded groove on the body of the reciprocating lead screw 21. At least one set of guide components 24 is provided on the surface of the slider 22. A sleeve 4 is provided on the slider 22 and is connected and fixed to the slider 22. The end of the sleeve 4 away from the slider 22 extends out from the through hole in the center of the linear bearing compartment 34. A quick connector 8 can be provided on the sleeve 4 to realize connection with components such as massage heads and realize quick assembly and disassembly. A sealing ring is provided between the quick connector 8 and the sleeve 4 to prevent water from entering the sleeve 4.

[0027] like Figure 3 , Figure 4 and Figure 5 As shown, the slider 22 is a rectangular block. At the end facing the sleeve 4, a sleeve connector 224 is fixed to the slider 22 by screws. The sleeve connector 224 has a sleeve 225 with an outer diameter equal to that of the sleeve 4. At the end of the sleeve 4 opposite to the slider 22, a sleeve insertion section 41 with an outer diameter matching the inner diameter of the sleeve 225 is provided. The sleeve 4 is inserted into the sleeve 225 through the sleeve insertion section 41. Specifically, the sleeve insertion section 41 has external threads, and the inner wall of the sleeve 225 has internal threads. The sleeve insertion section 41 and the sleeve 225 are threadedly connected and secured. The inner diameter of the sleeve 4 is slightly larger than the diameter of the reciprocating screw 21. When the slider 22 moves, part of the reciprocating screw 21 is located within the sleeve 4.

[0028] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in order to ensure smoother movement of the sleeve 4, the diameter of the end of the reciprocating screw 21 away from the drive motor 1 is smaller than the diameter of the rest of the reciprocating screw 21, forming a variable diameter section 211. A ball guide sleeve 5 is fitted on the variable diameter section 211. The ball surfaces on the ball guide sleeve 5 contact the inner wall of the sleeve 4 and the outer wall of the variable diameter section 211 respectively, so as to avoid the inner wall of the sleeve 4 from contacting the reciprocating screw 21 during the linear reciprocating movement. The ball guide sleeve 5 is limited and fixed on the variable diameter section 211 by the guide sleeve retaining spring 212, so as to reduce friction when the reciprocating screw rotates inside the sleeve and ensure the straightness of the slider and the sleeve when they move in a straight line.

[0029] In this utility model, such as Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the guide assembly 24 includes a second guide member 241 and a guide groove 242. The guide groove 242 is disposed on the inner wall of the slider compartment 33, and its length covers the stroke of the slider 22. The second guide member 241 is disposed on the slider 22. Specifically, the guide groove 242 is formed by the space enclosed by two protrusions. The cross-section of the guide groove 242 is a concave arc shape, and the protrusions extend along the length direction of the slider compartment 33. Preferably, the guide assembly 24 is provided in two sets, and the two sets of guide assemblies 24 are disposed opposite to each other in the slider compartment 33.

[0030] like Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the second guide 241 is preferably a ball bearing. The curvature of the guide groove 242 is adapted to the spherical surface of the second guide 241. A hemispherical groove 223 is provided on the surface of the slider 22. The hemispherical groove 223 is opposite to the guide groove 242. The second guide 241 is embedded in the hemispherical groove 223 and cannot be removed. This is to prevent the slider from rotating radially due to friction when the reciprocating screw rotates in the working state, thereby reducing friction and noise during operation, and making the slider only perform linear reciprocating motion along the axial direction.

[0031] like Figure 3 , Figure 4 and Figure 5 As shown, a first guide groove 222 is provided on the slider 22. The lower end of the first guide groove 222 communicates with the slider hole 221, and the upper end of the first guide groove 222 penetrates the upper surface of the slider 22. A first guide 23 is disposed in the first guide groove 222. An elastic clamping member 26 is provided on the first guide 23. A slider cover 25 is provided on the clamping member 26 to close the end of the first guide groove 222 away from the slider hole 221. The slider cover 25 is fastened to the slider 22 by screws. Specifically, the first guide 23 includes a base. The base 231 and the crescent-shaped guide block 232 are adapted to the shape of the first guide groove 222. The curvature of the crescent arc surface on the guide block 232 is adapted to the curvature of the bottom of the thread groove. The guide block 232 is set in the thread groove of the reciprocating screw. The lower end of the second guide 241 is placed in the groove at the upper end of the slider cover 25. The clamping member 26 provides appropriate pressure to prevent the guide block 232 from contacting the thread groove surface too tightly, which would generate too much friction and hinder movement. This can avoid the problem that may cause the two parts to jam.

[0032] In one embodiment of this utility model, the second guide member 241 is disposed on both ends opposite to the first guide member 23. One of the hemispherical grooves 223 is formed on the slider cover 25. The clamping member 26 is a spring, and the ball bearing is a steel ball. The clamping member 26, being a spring, can provide appropriate pressure, allowing the guide block and the slider to move freely. Since the contact between the guide block and the threaded groove will cause friction and wear, gaps will exist after wear. The spring can push the guide block to fill these gaps, thereby ensuring that the movement of the guide block in the threaded groove remains smooth.

[0033] like Figure 3 , Figure 4 and Figure 5As shown, the linear bearing housing 34 is a circular cap-like structure. One end has an opening that is tightly connected to the second flange 36, and the other end is a closed surface with a central hole for the sleeve 4 to extend out. The second flange 36 has an annular bearing seat 61 at the end opposite to the linear bearing housing 34. The bearing seat 61 has a linear bearing hole that connects to the central hole of the second flange 36. The bearing seat 61 has a retaining groove 62 that partially penetrates the body of the bearing seat 61. A linear bearing 6 is installed in the bearing seat 61, and a bearing retaining 63 is installed on the linear bearing 6. When the linear bearing 6 is inserted into the linear bearing hole, the bearing retaining 63 partially engages with the retaining groove 62, fixing the linear bearing 6 in the bearing seat 61. Here, the bearing retaining 63 has a polygonal structure and is inserted into the retaining groove 62. The sleeve 4 passes through the linear bearing 6.

[0034] like Figure 3 , Figure 4 and Figure 5 As shown, a stepped hole 341 is provided in the center hole of the linear bearing housing 34, and a waterproof and dustproof ring 342 is provided in the stepped hole 341. The sleeve 4 passes through the waterproof and dustproof ring 342 to achieve waterproof and dustproof protection, so that water or foreign objects are prevented from entering the product when the sleeve makes linear reciprocating motion.

[0035] like Figure 3 , Figure 4 and Figure 5 A rechargeable battery 324 is provided in the battery and motor compartment 32. A battery connection slot 322 is provided at the end of the motor connector 321 away from the drive motor 1. The battery 324 is inserted and fixed in the battery connection slot 322. A hole for the cable to pass through is provided on the closed surface of the battery connector 321. A control board 7 is also provided in the circuit compartment 31. The control board 7 is provided with a power indicator light 71, a switch 72 and a charging connector 73 that are electrically connected to it. A hole is provided at the end of the circuit compartment 31 away from the battery and motor compartment 32 to expose the power indicator light 71, the switch 72 and the charging connector 73. The control board 7 is electrically connected to the battery 324 and the drive motor 1 respectively to realize the control of the drive motor 1.

[0036] like Figure 3 , Figure 4 and Figure 5 As shown, the circuit compartment 31 is provided with a plug 311 extending toward the battery and motor compartment 32. Correspondingly, the battery and motor compartment 32 is provided with a slot 323. The circuit compartment 31 is inserted into the slot 323 through the plug 311 to fix the circuit compartment 31 to the battery and motor compartment 32. A third waterproof ring 37 is provided between the circuit compartment 31 and the battery and motor compartment 32 to achieve sealing and waterproofing. In this utility model, the control board 7 can be set as a circle and fixed in the circuit compartment 31 through the plug 311.

[0037] like Figure 3 , Figure 4 and Figure 5 As shown in the figure, a shock-absorbing pad 38 is provided between the drive motor 1 and the first flange 35 to reduce the vibration of the entire product when the drive motor is working. As can be seen from the figure, the first flange 35 has a ring-shaped protrusion with a through hole. The drive motor 1 is connected to the screw hole on the drive motor 1 housing by passing a screw through the through hole, and the drive motor 1 is fixed on the ring-shaped protrusion. The shock-absorbing pad 38 rests between the ring-shaped protrusion and the drive motor 1.

[0038] like Figures 1 to 5 As shown, a rod-shaped quick connector male 9 is provided on the outer wall of the linear bearing housing 34 to achieve connection with the relevant bracket.

[0039] like Figures 1 to 5 As shown, this utility model also discloses a massager, including the above-mentioned telescopic device, with the massage head connected to the quick connector 8. Since the telescopic device has been described in detail above, it will not be repeated here.

[0040] This utility model has the following advantages: 1. By using a reciprocating lead screw and slider, the product remains compact even with a large extension stroke, making it convenient to use and carry. 2. The integrated design of the product makes it waterproof and dustproof, increasing the number of usage scenarios.

Claims

1. A telescopic device, comprising a drive motor (1), a telescopic mechanism (2) connected to the drive motor (1), and a housing (3), wherein the drive motor (1) and the telescopic mechanism (2) are disposed within the housing (3), characterized in that: The telescopic mechanism (2) includes a reciprocating lead screw (21) and a slider (22). The slider (22) has a slider hole (221). The reciprocating lead screw (21) passes through the slider hole (221). The reciprocating lead screw (21) is connected to the output shaft of the drive motor (1) so that when the reciprocating lead screw (21) rotates, the slider (22) moves axially linearly back and forth on the reciprocating lead screw (21). The slider hole (221) is provided with a first guide (23) that extends into the threaded groove on the body of the reciprocating lead screw (21). At least one set of guide components (24) is provided on the surface of the slider (22). A sleeve (4) is provided on the slider (22). The sleeve (4) is connected and fixed to the slider (22). The end of the sleeve (4) away from the slider (22) extends out from the outer shell (3).

2. The telescopic device according to claim 1, characterized in that: The guide assembly (24) includes a second guide (241) and a guide groove (242). The guide groove (242) is located in the housing (3) and its length covers the stroke of the slider (22). The second guide (241) is located on the slider (22).

3. The telescopic device according to claim 2, characterized in that: The slider (22) is provided with a first guide groove (222), one end of the first guide groove (222) is connected to the slider hole (221), and the other end of the first guide groove (222) penetrates one end surface of the slider (22). The first guide (23) is provided in the first guide groove (222), and a clamping member (26) is provided on the first guide (23). The clamping member (26) is provided with a slider cover (25) that closes the end of the first guide groove (222) away from the slider hole (221).

4. The telescopic device according to claim 3, characterized in that: The first guide member (23) includes a base (231) and a crescent-shaped guide block (232). The curvature of the crescent-shaped arc surface on the guide block (232) is adapted to the curvature of the bottom of the thread groove. The guide block (232) is disposed in the thread groove of the reciprocating screw (21).

5. The telescopic device according to claim 2, characterized in that: The second guide (241) is a ball bearing, and a hemispherical groove (223) is provided on the surface of the slider (22), and the second guide (241) is embedded in the hemispherical groove (223).

6. The telescopic device according to claim 5, characterized in that: The guide component (24) is provided in two sets, and the two sets of guide components (24) are arranged opposite to each other.

7. The telescopic device according to any one of claims 1-6, characterized in that: The end of the reciprocating screw (21) away from the drive motor (1) extends into the sleeve (4). The diameter of the rod body at the end of the reciprocating screw (21) away from the drive motor (1) is smaller than the diameter of the rest of the reciprocating screw (21), forming a variable diameter section (211). A ball guide sleeve (5) is fitted on the variable diameter section (211). The ball surfaces on the ball guide sleeve (5) are in contact with the inner wall of the sleeve (4) and the outer wall of the variable diameter section (211), respectively.

8. The telescopic device according to claim 7, characterized in that: The sleeve (4) is provided with a linear bearing (6), which is fixed inside the outer shell (3).

9. The telescopic device according to claim 7, characterized in that: The housing (3) contains a rechargeable battery (324) and a control board (7). The control board (7) is equipped with a power indicator light (71), a switch (72) and / or a charging connector (73). The control board (7) is electrically connected to the battery (324) and the drive motor (1).

10. A massager, comprising a massage head, characterized in that: It also includes the telescopic device as described in any one of claims 1 to 9.

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