Telescopic device and massager

Abstract

The telescopic device comprises a driving motor, a telescopic mechanism connected with the driving motor and a shell, the telescopic mechanism comprises a reciprocating screw rod and a sliding block, a sliding block hole is formed in the sliding block, the reciprocating screw rod penetrates through the sliding block hole, and the reciprocating screw rod is connected with an output shaft of the driving motor so that when the reciprocating screw rod rotates, the reciprocating screw rod can rotate in the sliding block hole. The sliding block axially and linearly reciprocates on the reciprocating lead screw, a first guide piece extending into a threaded groove in a rod body of the reciprocating lead screw is arranged in a sliding block hole, at least one guide assembly is arranged on the surface of the sliding block, a sleeve is arranged on the sliding block and fixedly connected with the sliding block, and the end, away from the sliding block, of the sleeve extends out of the shell. The invention further discloses a massager which comprises the telescopic device. Compared with the prior art, the problem that the product size is large when the reciprocating stroke is long is solved, the product is convenient to carry, meanwhile, the use scene of the product is increased, and the product design space is larger due to the fact that the appearance of the product is changed along with the change of the structure of the product.

Description

Technical Field

[0001] The invention relates to a telescopic device and a massager. Background Art

[0002] Existing massagers (such as fascia guns) and other health massage products that perform telescopic movement generally achieve linear reciprocating motion of the front end head by driving an eccentric wheel connecting rod mechanism driven by a driving motor. The rotation radius of the eccentric wheel determines its reciprocating stroke. When the reciprocating stroke is longer, the volume of the product will increase accordingly. Since the direction of its linear reciprocating motion is perpendicular to the rotating shaft of the driving motor, its appearance can usually only be made into a cross shape or a large plate structure, which makes it not suitable for users with small hands to operate when grasping, causing inconvenience in use. In addition, it also causes it to occupy a large area when stored. Summary of the invention

[0003] The object of the present invention is to provide a telescopic device and a massager to solve the deficiencies of the prior art.

[0004] To solve the above problems, the present invention adopts the following technical solutions: a telescopic device, including a driving motor, a telescopic mechanism connected to the driving motor and a shell, the driving motor and the telescopic mechanism are arranged in the shell, the telescopic mechanism includes a reciprocating screw and a slider, the slider is provided with a slider hole, the reciprocating screw passes through the slider hole, the reciprocating screw is connected to the output shaft of the driving motor, so that when the reciprocating screw rotates, the slider moves axially and linearly on the reciprocating screw, a first guide member is provided in the slider hole and extends into a threaded groove on the reciprocating screw body, at least one group of guide components is provided on the surface of the slider, a sleeve is provided on the slider, the sleeve is connected and fixed to the slider, and the end of the sleeve away from the slider extends out of the shell.

[0005] Furthermore, the guide assembly includes a second guide member and a guide groove. The guide groove is arranged in the housing and has a length covering the stroke of the slider. The second guide member is arranged on the slider.

[0006] Furthermore, a first guide groove is provided on the slider, one end of the first guide groove is connected to the slider hole, the other end of the first guide groove passes through one end surface of the slider, the first guide is arranged in the first guide groove, a clamping member is provided on the first guide member, and a slider cover is provided on the clamping member to close the notch at one 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 arc surface on the guide block is matched with the curvature of the bottom of the thread groove, and the guide block is arranged in the thread groove of the reciprocating screw.

[0008] Furthermore, the second guide member is a ball bearing, a hemispherical groove is provided on the surface of the sliding block, and the second guide member is embedded in the hemispherical groove.

[0009] Furthermore, the guide components are provided with two groups, and the two groups of guide components are arranged opposite to each other.

[0010] Furthermore, one end of the reciprocating screw away from the driving motor extends into the sleeve, and the diameter of the rod body at the end of the reciprocating screw away from the driving motor is smaller than the diameter of the rest of the reciprocating screw, forming a reducing portion, and a ball guide sleeve is sleeved on the reducing portion, and the ball surface on the ball guide sleeve contacts the inner wall of the sleeve and the outer wall of the reducing portion respectively.

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

[0012] Furthermore, a rechargeable battery and a control panel are arranged in the housing, a power indicator light, a switch and / or a charging connector are arranged on the control panel, and the control panel is electrically connected to the battery and the driving motor respectively.

[0013] The invention also discloses a massager, comprising a massage head and the telescopic device.

[0014] Compared with the prior art, the present invention adopts a reciprocating screw and a slider to replace the existing eccentric wheel connecting rod mechanism in the telescopic mechanism, which solves the problem of large product volume when the reciprocating stroke is long, makes the product easy to carry, and increases its usage scenarios. Moreover, since the product appearance also changes due to the change of its structure, it has a larger product design space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The external structure of the present invention is shown in FIG. Figure 1 .

[0016] Figure 2 The external structure of the present invention is shown in FIG. Figure 2 .

[0017] Figure 3 It is an exploded schematic diagram of the present invention.

[0018] Figure 4 The internal structure of the present invention is shown in FIG. Figure 1 .

[0019] Figure 5 The internal structure of the present invention is shown in FIG. Figure 2 .

[0020] Figure 6 It is a schematic diagram of the connection between the ball sleeve and the reciprocating screw rod of the present invention.

[0021] Figure 7 It is a structural schematic diagram of the slider bin of the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 5 As shown, the present invention discloses a telescopic device, a driving motor 1, a telescopic mechanism 2 connected to the driving motor 1, and a housing 3, wherein:

[0024] The outer shell 3 is composed of four circular sleeves of different lengths that are tightly plugged into each other through connectors to form a linear structure, which includes a circuit compartment 31, a battery and motor compartment 32, a slider compartment 33, and a linear bearing compartment 34 in sequence. The battery and motor compartment 32 and the slider compartment 33 are tightly plugged 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 plugged and fixed by a second flange 36, and a second sealing ring 352 is provided for waterproof sealing. The first flange 35 and the second flange 36 both have a center 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 gluing.

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

[0026] The telescopic mechanism 2 is arranged in the slider bin 33. The telescopic mechanism 2 includes a reciprocating screw 21 and a slider 22. The slider 22 is provided with a slider hole 221. The reciprocating screw 21 passes through the slider hole 221. The reciprocating screw 21 is connected to the output shaft of the driving motor 1, so that when the reciprocating screw 21 rotates, the slider 22 moves axially and linearly back and forth on the reciprocating screw 21. The slider hole 221 is provided with a first guide member 23 extending into the threaded groove on the rod body of the reciprocating screw 21. At least one group 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 fixedly connected to the slider 22. One end of the sleeve 4 away from the slider 22 extends from the through hole in the center of the linear bearing bin 34. A quick connector 8 can be provided on the sleeve 4 to achieve connection with components such as a massage head and achieve quick disassembly and assembly. 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 5As shown, the slider 22 is a rectangular block, and one end thereof facing the sleeve 4 is provided with a sleeve connector 224 fixed to the slider 22 by screws, and the sleeve connector 224 is provided with a sleeve 225 having an outer diameter equal to the outer diameter of the sleeve 4, and the sleeve 4 is provided with a sleeve plug-in section 41 having an outer diameter matched with the inner diameter of the sleeve 225 at the end opposite to the slider 22, and the sleeve 4 is inserted into the sleeve 225 through the sleeve plug-in section 41. Specifically, the sleeve plug-in section 41 is provided with an external thread, and the inner wall of the sleeve 225 is provided with an internal thread, and the sleeve plug-in section 41 is threadedly connected and fastened with the sleeve 225. The inner diameter of the sleeve 4 is slightly larger than the diameter of the reciprocating screw 21, and when the slider 22 is moving, the reciprocating screw 21 is partially located in the sleeve 4.

[0028] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in order to ensure that the movement of the sleeve 4 is smoother, the diameter of the rod body at one end of the reciprocating screw 21 away from the driving motor 1 is smaller than the diameter of the rest of the reciprocating screw 21, forming a reducing portion 211, and a ball guide sleeve 5 is sleeved on the reducing portion 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 reducing portion 211 respectively, so as to avoid the inner wall of the sleeve 4 from touching the reciprocating screw 21 during the linear reciprocating movement. The ball guide sleeve 5 is fixed on the reducing portion 211 by a 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 linear manner.

[0029] In the present invention, if 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 arranged on the inner cavity wall of the slider bin 33, and its length covers the stroke of the slider 22. The second guide member 241 is arranged on the slider 22. Specifically, the guide groove 242 is composed of a space enclosed by two convex strips. The cross-section of the guide groove 242 is a concave arc, and the convex strips extend along the length direction of the slider bin 33. Preferably, the guide assembly 24 is provided with two groups, and the two groups of guide assemblies 24 are relatively arranged in the slider bin 33.

[0030] like Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, as a preferred embodiment, the second guide member 241 is a ball, the curvature of the guide groove 242 is adapted to the spherical surface of the second guide member 241, and a hemispherical groove 223 is provided on the surface of the slider 22, the hemispherical groove 223 is opposite to the guide groove 242, and the second guide member 241 is embedded in the hemispherical groove 223 and cannot be dislodged, so that when the reciprocating screw rotates in the working state, the friction force will not drive the slider to rotate radially, 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 is communicated with the slider hole 221, the upper end of the first guide groove 222 passes through the upper end surface of the slider 22, the first guide 23 is provided in the first guide groove 222, an elastic pressing member 26 is provided on the first guide 23, and a slider cover 25 is provided on the pressing member 26 to close the notch of one end of the first guide groove 222 away from the slider hole 221, and the slider cover 25 is fastened to the slider 22 by screws; specifically, the first guide 23 includes a base 231 and a crescent-shaped guide block 232, the base 231 is adapted to the shape of the first guide member 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 arranged in the thread groove of the reciprocating screw, the lower end of the second guide member 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 too tightly with the thread groove surface, thereby generating too much friction, which is not conducive to movement, and can avoid the problem that the two components may be stuck.

[0032] As an embodiment of the present invention, the second guide member 241 is disposed on opposite ends of the first guide member 23, wherein a hemispherical groove 223 is formed on the slider cover 25, the pressing member 26 is a spring, the ball bearing is a steel ball, and the pressing member 26 is a spring that can provide appropriate pressure to enable the guide block and the slider to move freely. Since the contact between the guide block and the thread groove will cause friction and wear, there will be a gap after wear, and the spring can push the guide block to fill the gap, thereby ensuring that the movement of the guide block in the thread groove remains smooth.

[0033] like Figure 3 , Figure 4 and Figure 5As shown, the linear bearing bin 34 is a circular cover-like structure, one end of which has an opening tightly connected to the second flange 36, and the other end is a closed surface, the closed surface is provided with a center hole for the sleeve 4 to extend out, and the end of the second flange 36 opposite to the linear bearing bin 34 is provided with a circular ring-shaped bearing seat 61, the bearing seat 61 has a linear bearing hole, the linear bearing hole is connected to the center hole of the second flange 36, and a retaining spring groove 62 partially penetrates the body of the bearing seat 61. A linear bearing 6 is provided in the bearing seat 61, and a bearing retaining spring 63 is provided on the linear bearing 6. When the linear bearing 6 is inserted into the linear bearing hole, the bearing retaining spring 63 is partially inserted into the retaining spring groove 62 to fix the linear bearing 6 in the bearing seat 61. Here, the bearing retaining spring 63 is a polygonal structure, which is inserted into the retaining spring groove 62, and the sleeve 4 passes through the linear bearing 6.

[0034] like Figure 3 , Figure 4 and Figure 5 As shown, a step hole 341 is provided in the center hole of the linear bearing magazine 34, and a waterproof and dustproof ring 342 is provided in the step hole 341. The sleeve 4 passes through the waterproof and dustproof ring 342 to achieve waterproof and dustproof properties, so as to prevent water or foreign matter from entering the interior of the product when the sleeve performs 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 connecting groove 322 is provided at the end of the motor connector 321 away from the drive motor 1, the battery 324 is plugged and fixed in the battery connecting groove 322, and 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, and a power indicator light 71, a switch 72 and a charging connector 73 electrically connected thereto are provided on the control board 7. A hole for exposing the power indicator light 71, the switch 72 and the charging connector 73 is provided at the end of the circuit compartment 31 away from the battery and motor compartment 32, and the control board 7 is electrically connected to the battery 324 and the drive motor 1 respectively to control the drive motor 1.

[0036] like Figure 3 , Figure 4 and Figure 5 As shown, the circuit compartment 31 is provided with a plug post 311 extending toward the battery and motor compartment 32. Correspondingly, a slot 323 is provided in the battery and motor compartment 32. The circuit compartment 31 is inserted into the slot 323 through the plug post 311 to fix the circuit compartment 31 and 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 the present invention, the control board 7 can be set to a circular shape and fixed in the circuit compartment 31 by the plug post 311.

[0037] like Figure 3 , Figure 4 and Figure 5 As shown, a shock-absorbing pad 38 is provided between the driving motor 1 and the first flange 35 to reduce the vibration of the driving motor on the whole product when the driving motor is working. It can be seen from the figure that a circular protrusion is provided in the first flange 35, and a through hole is provided on the protrusion. The driving motor 1 is connected to the screw hole on the housing of the driving motor 1 by screws passing through the through hole, and the driving motor 1 is fixed on the circular protrusion. The shock-absorbing pad 38 is abutted between the circular protrusion and the driving motor 1.

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

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

[0040] The present invention has the following beneficial effects: 1. Through the application of the reciprocating screw and the slider, the product is small in size even with a large telescopic stroke, and is convenient to use and carry. 2. The integrated design of the product makes the product waterproof and dustproof, increasing the product's 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 arranged in the housing (3), characterized in that: The telescopic mechanism (2) comprises a reciprocating screw (21) and a slider (22); a slider hole (221) is provided on the slider (22); the reciprocating screw (21) passes through the slider hole (221); the reciprocating screw (21) is connected to the output shaft of the driving motor (1), so that when the reciprocating screw (21) rotates, the slider (22) moves axially and linearly back and forth on the reciprocating screw (21); a first guide member (23) is provided in the slider hole (221) and extends into a thread groove on the rod body of the reciprocating screw (21); at least one group 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); and one end of the sleeve (4) away from the slider (22) extends out of the housing (3).

2. The telescopic device according to claim 1, characterized in that: The guide assembly (24) comprises a second guide member (241) and a guide groove (242); the guide groove (242) is arranged in the housing (3) and has a length covering the stroke of the slider (22); the second guide member (241) is arranged 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) passes through one end surface of the slider (22); the first guide (23) is arranged in the first guide groove (222), and a clamping member (26) is arranged on the first guide (23); the clamping member (26) is provided with a slider cover (25) for closing a notch at one 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) comprises a base (231) and a crescent-shaped guide block (232); the curvature of the crescent-shaped arc surface on the guide block (232) matches the curvature of the bottom of the thread groove; the guide block (232) is arranged in the thread groove of the reciprocating screw (21).

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

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

7. The telescopic device according to any one of claims 1 to 6, characterized in that: The end of the reciprocating screw rod (21) away from the driving motor (1) extends into the sleeve (4); the diameter of the rod body at the end of the reciprocating screw rod (21) away from the driving motor (1) is smaller than the diameter of the remaining part of the reciprocating screw rod (21), forming a diameter reducing portion (211); a ball guide sleeve (5) is sleeved on the diameter reducing portion (211); and the surface of the balls on the ball guide sleeve (5) are in contact with the inner wall of the sleeve (4) and the outer wall of the diameter reducing portion (211) respectively.

8. The telescopic device according to claim 7, characterized in that: A linear bearing (6) is provided outside the sleeve (4), and the linear bearing (6) is fixed inside the housing (3).

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

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

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