Fastener for hand tool plugging head of beauty instrument

Abstract

The utility model relates to the technical field of fasteners, and particularly discloses a fastener for a hand tool plugging head of a beauty instrument, which comprises an arc-shaped hoop, the arc-shaped hoop is used for being clamped on a connecting pipe and used for limiting a threaded cover from being separated from a fixed cylinder, and the arc-shaped hoop is an elastic arc-shaped hoop. The plug has the effect of improving the problem that the threaded cap and the plug are easy to loosen and release.

Description

Technical Field

[0001] The present application relates to the technical field of fasteners, and in particular to a fastener for a beauty instrument handpiece plug-in and pull-out head. Background Art

[0002] With the improvement of people's living standards, more and more people tend to do beauty treatments, so the use of beauty instruments is increasing. Beauty instruments usually include a chassis, a hand tool and a plug-in head. The hand tool is connected to one end of the plug-in head through a connecting tube. The connecting tube is a corrugated tube with a threaded cap on it. A fixed tube is provided at one end of the plug-in head. After the connecting tube is inserted into the fixed tube, the threaded cap is rotated so that the threaded cap is threadedly connected to the outer peripheral wall of the fixed tube. After tightening the threaded cap, the threaded cap plays the role of fixing the connecting tube. The other end of the plug-in head is connected to the chassis to power the hand tool. The operator outputs water, light, etc. to the user through the hand tool to achieve the effect of beauty.

[0003] Regarding the above-mentioned related technologies, the handpiece may become loose and disengaged from the threaded cover and the plug-in head due to frequent movement and pulling during use, thereby causing the connection between the connecting tube and the plug-in head to be loose, affecting the normal use of the beauty instrument. Utility Model Content

[0004] In order to improve the problem that the threaded cover and the plug-in head are prone to loosening and disengagement, the present application provides a fastener for a beauty instrument handpiece plug-in head.

[0005] The present application provides a fastener for a beauty instrument handpiece plug-in head adopts the following technical solution:

[0006] A fastener for a plug-in and pull-out head of a beauty instrument handpiece comprises an arc-shaped clamp, which is used to be clamped on a connecting pipe and used to limit a threaded cover from being separated from a fixing tube. The arc-shaped clamp is an elastic arc-shaped clamp.

[0007] By adopting the above technical solution, when in use, the threaded cover and the arc-shaped clamp are sequentially sleeved on the outer peripheral wall of one end of the connecting pipe inserted into the fixed cylinder. During the process of threaded connection between the threaded cover and the outer peripheral wall of the fixed cylinder, the arc-shaped clamp is pressed, so that the arc-shaped clamp is clamped in the inner cavity of the threaded cover, and at the same time abuts between the outer peripheral wall of the connecting pipe and the inner thread of the threaded cover. The arc-shaped clamp can limit the separation of the threaded cover and the fixed cylinder on the plug-in head, thereby improving the problem that the threaded cover and the plug-in head are prone to loosening and disengagement.

[0008] Optionally, the arc-shaped clamp includes a top plate, a bottom plate and an arc-shaped plate, and the top plate and the bottom plate are respectively connected to two ends of the arc-shaped plate.

[0009] By adopting the above technical solution, a clamping cavity is formed between the top plate, the bottom plate and the arc plate. Under the pressure of the threaded cover, the corrugations on the outer peripheral wall of the connecting pipe are clamped in the clamping cavity, so that the arc clamp is stably fixed on the connecting pipe and cannot move along the length direction of the connecting pipe, so that the arc clamp can better restrict the threaded cover from falling out, and the structure is simple and easy to use.

[0010] Optionally, a diameter of a side of the arc-shaped plate connected to the top plate is smaller than a diameter of a side of the arc-shaped plate connected to the bottom plate.

[0011] By adopting the above technical solution, when the arc clamp is clamped on the connecting pipe, the top plate is close to the top surface of the inner cavity of the threaded cover, and the bottom plate is far away from the top surface of the inner cavity of the threaded cover. Since the diameter of the side where the arc plate is connected to the top plate is smaller than the diameter of the side where the arc plate is connected to the bottom plate, the arc clamp is overall in the shape of a truncated cone after being clamped on the connecting pipe. When the threaded cover is tightened, the arc clamp will not restrict the movement of the threaded cover toward the fixed tube, thereby reducing the difficulty of tightening the threaded cover and saving time and effort.

[0012] Optionally, the arc plate includes a first arc plate and a second arc plate, and the first arc plate and the second arc plate are rotatably connected at one end close to each other; the first arc plate is respectively connected to a top plate and a bottom plate at both ends, and the second arc plate is also respectively connected to a top plate and a bottom plate at both ends, and the two top plates are located on the same side.

[0013] By adopting the above technical solution, the arc plate is divided into a first arc plate and a second arc plate which are rotatably connected, so that the arc clamp can be more conveniently sleeved on the connecting pipe by rotation, with a simple structure and easy use.

[0014] Optionally, a torsion spring is provided on the first arc plate, one end of the torsion spring is connected to the first arc plate, and the other end of the torsion spring is connected to the second arc plate, and the torsion spring tends to make the free ends of the first arc plate and the second arc plate move away from each other.

[0015] By adopting the above technical solution, the free ends of the first arc plate and the second arc plate are ends that are far away from each other. The setting of the torsion spring can make the first arc plate and the second arc plate tend to be in an open state, so that the clamping between the outer peripheral wall of the first arc plate and the inner thread of the threaded cover is more secure, further improving the anti-detachment effect of the arc clamp on the threaded cover.

[0016] Optionally, a spike is provided at one end of the top plate away from the arc-shaped plate.

[0017] By adopting the above technical solution, the setting of the spikes makes the connection more stable when the arc-shaped clamp is pressed and clamped on the connecting pipe by the threaded cover.

[0018] Optionally, one end of the spike away from the top plate is rounded.

[0019] By adopting the above technical solution, the rounded corner of the end of the spike away from the top plate can reduce the probability of the spike piercing the connecting pipe, avoid the connecting pipe being damaged by the pressure of the spike, and extend the service life.

[0020] Optionally, when the arc-shaped clamp is clamped on the connecting pipe, a gap is left between the free ends of the first arc-shaped plate and the second arc-shaped plate.

[0021] By adopting the above technical solution, the arc clamp is not set in a full circle when clamped on the connecting pipe, which reduces the contact area between the threaded cover and the arc clamp, thereby reducing the friction between the two and making the threaded cover easier to tighten.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The setting of the elastic arc clamp enables the arc clamp to be pressed by the threaded cover and clamped in the inner cavity of the threaded cover when the threaded cover is threadedly connected with the fixed tube, and at the same time abuts against the internal thread of the inner cavity of the threaded cover and the outer peripheral wall of the connecting tube. Therefore, the arc clamp can limit the rotation and disengagement of the threaded cover, improving the problem that the threaded cover and the plug-in head are prone to loosening and disengagement;

[0024] 2. The arrangement of the top plate, the bottom plate and the arc plate enables the arc clamp to be stably fixed on the connecting pipe, and the arc clamp cannot move along the length direction of the connecting pipe, thereby better limiting the fall-out of the threaded cover;

[0025] 3. The arc plate includes a first arc plate and a second arc plate which are rotatably connected, so that the arc clamp can be more conveniently clamped on the connecting pipe, with a simple structure and convenient installation and removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the overall structure of the arc clamp in the embodiment of the present application;

[0028] Figure 2 It is a schematic cross-sectional structure diagram of the arc clamp installed on the connecting pipe in the embodiment of the present application, which is intended to show the assembly state of the arc clamp.

[0029] Figure numerals: 1, arc clamp; 11, top plate; 111, spike; 12, bottom plate; 13, arc plate; 131, first arc plate; 132, second arc plate; 14, torsion spring; 2, threaded cover; 3, connecting pipe; 4, hand tool; 5, plug-in head; 6, fixing tube. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] The present application embodiment discloses a fastener for a beauty instrument handpiece plug-in and pull-out head. Figure 1 The fastener for the plug-in and unplugging head of the beauty instrument hand tool includes an arc-shaped clamp 1, which is made of plastic material as a whole and can undergo elastic deformation. The arc-shaped clamp 1 includes a top plate 11, a bottom plate 12 and an arc plate 13, and the top plate 11 and the bottom plate 12 are respectively integrally formed on both sides of the arc plate 13 in the width direction, and the top plate 11 and the bottom plate 12 are parallel to each other, and the length extension direction of the top plate 11 and the bottom plate 12 is the same as the length extension direction of the arc plate 13, and the width of the top plate 11 and the bottom plate 12 is the same; the top plate 11, the bottom plate 12 and the arc plate 13 enclose a clamping cavity.

[0032] Reference Figure 2 When in use, the threaded cover 2 and the arc clamp 1 are sequentially sleeved on the connecting tube 3, the top plate 11 of the arc clamp 1 is close to the top surface of the inner cavity of the threaded cover 2, and the clamping cavity of the arc clamp 1 is engaged with the corrugation of the outer peripheral wall of the connecting tube 3, and the end of the connecting tube 3 away from the hand tool 4 is inserted into the fixing tube 6 of the plug-in head 5, and the threaded cover 2 is rotated so that the threaded cover 2 is threadedly connected with the outer peripheral wall of the fixing tube 6. During the tightening process, the threaded cover 2 presses against the outer peripheral wall of the arc plate 13, and the top plate 11 of the arc clamp 1 is pressed against the top surface of the inner cavity of the threaded cover 2, and the bottom plate 12 of the arc clamp 1 is pressed against the internal thread of the threaded cover 2. The arc clamp 1 limits the disengagement of the threaded cover 2 and the fixing tube 6, thereby improving the problem that the threaded cover 2 and the plug-in head 5 are prone to loosening and disengagement.

[0033] Reference Figure 1Furthermore, in order to facilitate the arc clamp 1 to be engaged with the connecting pipe 3, the arc clamp 1 is divided into two parts at the midpoint along the length direction, that is, the bottom plate 12 and the top plate 11 are both divided into two parts by the middle part, and the arc plate 13 is divided into a first arc plate 131 and a second arc plate 132 by the middle part, and the first arc plate 131 and the second arc plate 132 are connected by rotation around the midline of the two. When in use, the first arc plate 131 and the second arc plate 132 are first rotated and separated, and then the first arc plate 131 and the second arc plate 132 are rotated until the engaging cavity is engaged with the corrugation of the connecting pipe 3, so that the arc clamp 1 is fixedly connected to the connecting pipe 3, with a simple structure and convenient use. In other embodiments, the arc plate 13 can also be an integral body, that is, the arc plate 13 is not divided into the first arc plate 131 and the second arc plate 132 that are connected by rotation, and the arc plate 13 can be any setting as long as it can be set on the connecting pipe 3.

[0034] In order to further ensure that the arc clamp 1 has a good anti-slip effect on the threaded cover 2, a torsion spring 14 is arranged on the inner wall of the arc plate 13. The length direction of the torsion spring 14 is the same as the width direction of the arc plate 13. One end of the torsion spring 14 is fixedly connected to the first arc plate 131, and the other end of the torsion spring 14 is fixedly connected to the second arc plate 132. The torsion spring 14 tends to make the free ends of the first arc plate 131 and the second arc plate 132 move away from each other. The free end represents one end of the first arc plate 131 and the second arc plate 132 moving away from each other. After the threaded cover 2 is threadedly connected to the outer peripheral wall of the fixed cylinder 6, the arc clamp 1 is engaged with the external thread of the connecting pipe 3 and the arc clamp 1 is located in the inner cavity of the threaded cover 2. The first arc plate 131 and the second arc plate 132 tend to open under the action of the torsion spring 14, so that the bottom plate 12 of the arc clamp 1 expands outward, and then presses against the internal thread of the threaded cover 2, thereby limiting the threaded cover 2 from rotating out of the fixed cylinder 6.

[0035] In order to save costs, when the arc clamp 1 is clamped on the connecting pipe 3, a gap is left between the free ends of the first arc plate 131 and the second arc plate 132. For example, the length of the arc plate 13 is 0.6 to 0.8 times the length of the whole circle. In this application, the length of the arc plate 13 is 0.75 times the length of the whole circle of the arc plate 13. The arc plate 13 is not set as a whole circle, which can reduce the material usage of the arc clamp 1 and reduce the processing and manufacturing cost of the fasteners for the plug-in head 5 of the beauty instrument handpiece 4 without affecting the limiting effect of the arc clamp 1 on the disengagement of the threaded cover 2; and because the arc plate 13 is not set as a whole circle, the contact area between the threaded cover 2 and the arc plate 13 is reduced, so that the threaded cover 2 can be tightened more easily, reducing the difficulty of tightening the threaded cover 2.

[0036] In order to further reduce the difficulty of tightening the threaded cover 2 so that the threaded cover 2 is threadedly connected to the fixed cylinder 6, the diameter of the side where the arc plate 13 is connected to the top plate 11 is smaller than the diameter of the side where the arc plate 13 is connected to the bottom plate 12, that is, the arc plate 13 is not perpendicular to the bottom plate 12 or the top plate 11, and when the arc clamp 1 is engaged with the connecting pipe 3, the arc clamp 1 is truncated as a whole. The end with a smaller outer diameter of the arc plate 13 is close to the top surface of the inner cavity of the threaded cover 2, and the end with a larger outer diameter of the arc plate 13 is close to the fixed cylinder 6 of the plug head 5, thereby reducing the obstruction of the arc plate 13 to the threaded cover 2 in the process of approaching the fixed cylinder 6, and the threaded cover 2 can be screwed in more conveniently.

[0037] In addition, in order to enhance the stability of the connection between the arc clamp 1 and the connecting pipe 3, a spike 111 is extended from one end of the top plate 11 away from the arc plate 13, and multiple spikes are provided at intervals along the length extension direction of the top plate 11. When the arc clamp 1 is tightly clamped on the outer peripheral wall of the connecting pipe 3, the spike 111 is pressed against the outer peripheral wall of the connecting pipe 3 under the action of pressure, thereby forming a certain restriction on the relative rotation of the arc clamp 1 and the connecting pipe 3, and increasing the stability of the connection between the arc clamp 1 and the connecting pipe 3. The end of the spike 111 away from the top plate 11 is rounded to prevent the spike 111 from being too sharp and piercing the connecting pipe 3, thereby reducing damage to the connecting pipe 3.

[0038] The implementation principle of the fastener for the plug-in head 5 of the beauty instrument handpiece 4 in the embodiment of the present application is as follows: when in use, the threaded cover 2 is sleeved on the connecting tube 3, and the end of the connecting tube 3 away from the handpiece 4 is inserted into the fixed tube 6, and then the first arc plate 131 and the second arc plate 132 are separated and closed by rotation, so that the clamping cavity of the arc clamp 1 is engaged with the corrugation of the outer peripheral wall of the connecting tube 3, and then the threaded cover 2 is driven close to the fixed tube 6 and is threadedly connected with the outer peripheral wall of the fixed tube 6. At this time, the arc clamp 1 is pressed and accommodated in the inner cavity of the threaded cover 2, and the top plate 11 of the arc clamp 1 is pressed against the top surface in the inner cavity of the threaded cover 2, and the bottom plate 12 of the arc clamp 1 is pressed against the internal thread of the inner cavity of the threaded cover 2. The arc clamp 1 can limit the rotation of the threaded cover 2 away from the fixed tube 6, thereby improving the problem that the threaded cover 2 and the plug-in head 5 are easily loosened and disengaged.

[0039] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fastener for a beauty instrument handpiece plug-in and pull-out head, characterized in that: The arc-shaped clamp (1) is used to clamp on the connecting pipe (3) and to limit the threaded cover (2) from being separated from the fixing tube (6). The arc-shaped clamp (1) is an elastic arc-shaped clamp (1).

2. A fastener for a beauty instrument handpiece plug-in and pull-out head according to claim 1, characterized in that: The arc-shaped clamp (1) comprises a top plate (11), a bottom plate (12) and an arc-shaped plate (13); the top plate (11) and the bottom plate (12) are respectively connected to two ends of the arc-shaped plate (13).

3. A fastener for a beauty instrument handpiece plug-in and pull-out head according to claim 2, characterized in that: The diameter of one side of the arc-shaped plate (13) connected to the top plate (11) is smaller than the diameter of one side of the arc-shaped plate (13) connected to the bottom plate (12).

4. A fastener for a beauty instrument handpiece plug-in and pull-out head according to claim 2 or 3, characterized in that: The arc-shaped plate (13) comprises a first arc-shaped plate (131) and a second arc-shaped plate (132), wherein the first arc-shaped plate (131) and the second arc-shaped plate (132) are rotatably connected at one end close to each other; the first arc-shaped plate (131) is connected at both ends to a top plate (11) and a bottom plate (12), respectively; the second arc-shaped plate (132) is also connected at both ends to a top plate (11) and a bottom plate (12), respectively; and the two top plates (11) are located on the same side.

5. A fastener for plugging and unplugging a beauty instrument handpiece according to claim 4, characterized in that: A torsion spring (14) is provided on the first arc-shaped plate (131), one end of the torsion spring (14) is connected to the first arc-shaped plate (131), and the other end of the torsion spring (14) is connected to the second arc-shaped plate (132), and the torsion spring (14) tends to make the free ends of the first arc-shaped plate (131) and the second arc-shaped plate (132) move away from each other.

6. A fastener for plugging and unplugging a beauty instrument handpiece according to claim 4, characterized in that: A spike (111) is provided at one end of the top plate (11) away from the arc-shaped plate (13).

7. A fastener for a beauty instrument handpiece plug-in and pull-out head according to claim 6, characterized in that: One end of the spike (111) away from the top plate (11) is configured to be rounded.

8. A fastener for a beauty instrument handpiece plug-in and pull-out head according to claim 4, characterized in that: When the arc-shaped clamp (1) is clamped on the connecting pipe (3), a gap is left between the free ends of the first arc-shaped plate (131) and the second arc-shaped plate (132).

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