TWM594442U - Vibration structure of electric toothbrush - Google Patents

Abstract

This creation provides a vibration structure of an electric toothbrush, which includes an eccentric rod, and a transmission part and a counterweight part are formed at both ends of the eccentric rod, the transmission part is rotated by a driving force to drive the counterweight part to generate eccentric vibration, The weight part has an opening concavely provided with an accommodating space, a cover member correspondingly covers the opening, and a weight block is provided in the accommodating space to increase a part or all of the weight of the weight part, so that the The counterweight part causes the counterweight imbalance to deviate from a central axis of the eccentric rod by the added counterweight.

Description

Vibration structure of electric toothbrush

This creation is about the vibration structure, especially the vibration structure of an electric toothbrush.

The advantage of the electric toothbrush is that it can vibrate the toothpaste without manual operation. The conventional electric toothbrush is provided with an eccentric shaft. The eccentric shaft is provided with a counterweight unit, which causes the counterweight unit to rotate when the eccentric shaft rotates. The weight of the product causes vibration. The weight unit usually has a zigzag angle. However, in the conventional counterweight unit, the zigzag corners cause wind resistance and noise when the eccentric shaft rotates. Therefore, how to solve the above-mentioned problems is the direction that researchers in this field should strive.

One of the purposes of this creation is to reduce wind resistance and noise when the eccentric shaft of the electric toothbrush rotates. To achieve the above purpose, the present invention provides a vibration structure of an electric toothbrush, which includes: an eccentric rod has a transmission portion and a weight portion, the transmission portion is driven by a driving force to rotate the weight portion to produce eccentric vibration, the The counterweight unit has an opening recessed inwardly and an accommodating space is provided in the accommodating space, a counterweight is provided to increase the partial or total weight of the counterweight part, so that the counterweight part produces an imbalance in weight and deviates from the eccentric A central axis of the rod and a cover member cover the opening correspondingly. By creating this design, the outer surface of the weight part can reduce the missing corners, and the effect of reducing wind resistance and noise can be achieved when the weight part rotates.

The above-mentioned objects, structural and functional characteristics of this creation will be explained based on the preferred embodiments of the attached drawings. Please refer to Figures 1 to 4, which are a perspective exploded view, a perspective combined view, a cross-sectional view taken along line AA in Figure 2 and a cross-sectional view taken along line BB in Figure 2 as shown in the figure, The vibration structure of the electric toothbrush described in this work includes an eccentric rod 1, which is an axially extending rod-like (pillar, stick, rod)-shaped shaft (center), and both ends of the eccentric rod 1 A transmission part 11 and a weight part 12 are formed respectively. The transmission part 11 and the weight part 12 may be integrally formed, or the transmission part 11 and the weight part 12 may be two independent components, which can be any of the following: through shot, bonding, snapping, tight fitting, welding and screw locking One way fixed combination. The transmission part 11 is rotated by a driving force, and the driving force is output by a driving source. The specific structure of the driving source will be described in detail in other embodiments. The weight portion 12 has an opening 121 recessed inwardly and a receiving space 122 is provided therein. A weight block 124 is provided in the receiving space 122 to increase the partial weight of the weight portion 12 so that the weight portion 12 generates The unbalanced weight is offset from a central axis 14 of the eccentric rod 1. The weight imbalance is the partial or total weight added by the weight 124, which causes the center of gravity of the weight portion 12 to deviate from the central axis 14 of the eccentric rod 1, whereby the weight portion 12 is driven to rotate by the transmission portion 11 Eccentric vibration occurs. The weight block 124 is axially extended, equidistantly spaced, and unequally spaced in the receiving space 122, wherein the weight extension 124 is The entire weight is increased in the accommodating space 122, and the equidistant interval setting and the non-equidistant interval setting are such that the weight block 124 increases the local weight in the accommodating space 122, so that the counterweight portion 12 produces a counterweight imbalance. A cover 15 covers the opening 121 correspondingly, and the accommodating space 122 corresponds to the cover 15 having a circular cross section (as shown in FIG. 4), a polygonal cross section (as shown in FIG. 5) and any geometric shape Any of the cross sections (as shown in Figure 6). In this embodiment, it is shown that the weight 124 corresponds to the accommodating space 122 in a semi-circular cross section (as shown in FIG. 4 ), and the diameter of the weight 124 corresponds to the diameter of the accommodating space 122 However, it is not limited to this. In other embodiments, the weight 124 may also be represented as one of a polygonal cross section (as shown in FIG. 5) and an arbitrary geometric cross section (as shown in FIG. 6). In addition, the weight 124 can be made of metal or non-metal material. In this embodiment, it is shown that the weight block 124 and the accommodating space 122 are two independent components, which are fixed by any of the methods of shot shooting, bonding, snapping, tight fitting, welding, and screw lock, but they are not Limited to this, in other embodiments, it can also be expressed as that the weight block 124 is integrally formed with the receiving space 122. Furthermore, the eccentric rod 1 and the cover 14 can be made of thermoplastic materials, such as but not limited to polyoxymethylene (Polyoxymethylene, POM), which has abrasion resistance. With this design, since the weight 124 is eccentrically arranged with respect to the central axis 14 of the eccentric rod 1, the weight portion 12 generates a counterweight imbalance due to increased partial or total weight, causing the center of gravity to deviate from the central axis 14, When the eccentric rod 1 is rotated by the driving force, the position of the weight portion 12 in the circumferential direction continuously changes to produce the effect of eccentric vibration. Moreover, the weight portion 12 of the eccentric rod 1 and the cover member 15 are correspondingly closed, so that the outer surface of the weight portion 12 reduces the missing angle, thereby reducing wind resistance and noise when the weight portion 12 rotates eccentrically. Please refer to Figures 7 to 10, which are a perspective exploded view of the second embodiment of the vibration structure of the electric toothbrush, another perspective of the perspective exploded view, a combined perspective view, and a cross-sectional view taken along line CC of Figure 9, supplemented by reference Figures 1 to 6, as shown in the figure, part of the structure and function of this embodiment are the same as the above-mentioned first embodiment, so they will not be repeated here, but the difference between this embodiment and the above-mentioned first embodiment is, The weight portion 12 is corresponding to the opening 121 and is provided with two perforations 127 radially penetrating the outer surface of the weight portion 12. The outer surface of the weight portion 12 is concavely provided with two hook holes 128 corresponding to the perforations 127, the cover The member 15 is provided with two hooking feet 151 corresponding to the opening 121. The hooking feet 151 have a hooking portion 152 at the ends thereof. The hooking feet 151 and the hooking portions 152 are slightly L-shaped. When the counterweight 124 needs to be fixed and pressed against the accommodating space 122 through the cover 15, the hook feet 151 can be inserted through the perforations 127, and the hook portions 152 can be locked respectively Hooking into the hooked holes 128 causes the cover 15 to press against the weight 124 to fix the weight 124. When it is necessary to open the cover 15, the hook portions 152 can be forced in opposite directions, so that the hook feet 151 can be detached from the perforations 127, and the cover 15 can be detached from the weight portion 12 . Please refer to Figures 11 to 15, which are the exploded perspective view, the combined perspective view, the DD line sectional view of Figure 12, the static schematic diagram and the vibration schematic diagram of the third embodiment of the vibration structure of the electric toothbrush, supplemented by reference to the first As shown in FIG. 10, as shown in the figure, part of the structure and functions of this embodiment are the same as those of the first and second embodiments, so they will not be repeated here, but this embodiment is different from the first and second embodiments. For this reason, the vibration structure of the electric toothbrush of the present invention further includes a driving source 3, a vibration rod 4, a cleaning sleeve 5 and a main body 6. The driving source 3 is described by a motor. The driving source 3 is correspondingly engaged with the end of the transmission part 11 away from the weight part 12 to output the driving force to the eccentric rod 1. The vibrating rod 4 has a first closed end 41 and a first open end 42. The first closed end 41 and the first open end 42 together define a first space 43, and the first closed end 41 faces the first A first combining portion 44 protrudes in the space 43 direction. An end portion of the weight portion 12 away from the transmission portion 11 has a second combination portion 18, the eccentric rod 1 is inserted into the first space 43 from the first open end 42, and the first combination portion 44 and the first The two combined parts 18 are joined correspondingly. The cleaning sleeve 5 has a second closed end 51 and a second open end 52. The second closed end 51 and the second open end 52 together define a second space 53. A brush is provided outside the second closed end 51 The cleaning head 5 is sleeved outside the vibrating rod 4 through the second space 53. The main body portion 6 is held by a user and used for corresponding engagement with the cleaning hood 5. The driving source 3 is accommodated in the main body portion 6. Thereby, when the driving source 3 rotates, the driving force is generated to drive the transmission portion 11 to rotate the eccentric rod 1, and the weight portion 12 generates an eccentric vibration effect. The vibration generated by the weight part 12 is transmitted to the first combined part 44 of the vibrating rod 4 via the second combined part 18 and further transmitted to the cleaning head 5, so that the cleaning head 5 generates vibration correspondingly. The above has made a detailed description of this creation, but the above is only one of the preferred embodiments of this creation, and it should not limit the scope of this creation. That is, any changes and modifications made in accordance with the scope of this creative application should still fall within the scope of this patent.

1: eccentric rod

11: Transmission Department

11t: axis of transmission

12t: axis of counterweight

12: Counterweight

121: opening

122: accommodating space

124: counterweight

127: Piercing

128: hook hole

14: Central axis

15: Cover

151: hook feet

152: Card hook

18: Second Combination Department

3: Drive source

4: Vibration rod

41: The first closed end

42: The first open end

43: First space

44: The first combination

5: Cleaning the head

51: second closed end

52: Second open end

53: Second space

54: Brush

6: Main body

Figure 1 is an exploded perspective view of the first embodiment of the vibration structure of the electric toothbrush; Figure 2 is a three-dimensional assembled view of the first embodiment of the vibration structure of the electric toothbrush; Figure 3 is a sectional view taken along line A-A of Figure 2 for the vibration structure of the electric toothbrush; Figure 4 is a sectional view taken along line B-B of Figure 2 for the vibration structure of the electric toothbrush; Figure 5 is a schematic diagram of an alternative implementation of the first embodiment of the creation of the vibration structure of the electric toothbrush; Figure 6 is a schematic diagram of an alternative implementation of the first embodiment of the creation of the vibration structure of the electric toothbrush; Figure 7 is an exploded perspective view of the second embodiment of the vibration structure of the electric toothbrush; Figure 8 is another perspective view of a perspective exploded view of the second embodiment of the vibration structure of the electric toothbrush; Figure 9 is a three-dimensional assembled view of the second embodiment of the vibration structure of the electric toothbrush; Figure 10 is a sectional view taken along line C-C in Figure 9 of the vibration structure of the electric toothbrush; FIG. 11 is an exploded perspective view of the third embodiment of the vibration structure of the electric toothbrush; FIG. 12 is a three-dimensional assembly diagram of a third embodiment of a vibration structure of an electric toothbrush; Figure 13 is a sectional view taken along the line D-D in Figure 12 of the vibration structure of the electric toothbrush; Figure 14 is a still schematic diagram of the vibration structure of the electric toothbrush; Figure 15 is a schematic diagram of the vibration of the vibration structure of the electric toothbrush.

1: eccentric rod

11: Transmission Department

12: Counterweight

121: opening

122: accommodating space

124: counterweight

14: Axis

15: Cover

Claims (8)

A vibration structure of an electric toothbrush includes: a transmission part and a counterweight part are formed at both ends of an eccentric rod respectively, the transmission part is rotated by a driving force to drive the counterweight part to generate eccentric vibration, and the counterweight part has a The opening is recessed inwardly to provide a receiving space, and a weight block is provided in the receiving space to increase the partial or total weight of the weight portion, so that the weight portion is unbalanced and deviates from a central axis of the eccentric rod , A cover member covers the opening correspondingly. The vibration structure of the electric toothbrush as described in item 1 of the patent application scope, wherein the weight portion and the cover member cover and close the outer surface of the weight portion correspondingly. The vibration structure of the electric toothbrush as described in item 1 of the patent application range, wherein the accommodating space corresponds to any one of a circular cross section, a polygonal cross section and an arbitrary geometric cross section corresponding to the cover member, and the weight block corresponds to The accommodating space has any one of a semi-circular cross section, a polygonal cross section and an arbitrary geometric cross section. The vibration structure of the electric toothbrush as described in item 1 of the patent application range, wherein the weight is made of metal or non-metal material. The vibration structure of the electric toothbrush as described in item 1 of the patent scope, wherein the weight is integrally formed with the accommodating space or through any of the methods of shot, bonding, snapping, tight fitting, welding and screw locking Fixed combination. The vibration structure of the electric toothbrush as described in item 1 of the patent application scope, wherein the weight portion corresponds to an opening provided with two perforations, which radially penetrate the outer surface of the weight portion, and the outer surface of the weight portion corresponds to the The perforated concave is provided with two hook holes, and the cover is provided with two hooks corresponding to the opening The buckle foot has a hook portion at the end of the hook foot, the hook feet respectively pass through the perforations, and the hook portions are hooked in the hook holes. The vibration structure of the electric toothbrush as described in item 1 of the patent application scope further includes a driving source, a vibrating rod and a cleaning sleeve, the driving source is used to output the driving force, and the driving source correspondingly engages the transmission part away from the One end of the weight part outputs the driving force to the eccentric rod, the vibrating rod has a first closed end and a first open end, the first closed end and the first open end jointly define a first space, The first closed end protrudes toward the first space toward a first combination part, and the end of the weight part away from the transmission part has a second combination part, and the eccentric rod is inserted into the first from the first open end Space, and the first combined part and the second combined part are correspondingly joined, the cleaning sleeve has a second closed end and a second open end, the second closed end and the second open end jointly define a second space A brush portion is provided outside the second closed end, and the brush head is sleeved outside the vibrating rod through the second space. The vibration structure of the electric toothbrush as described in item 1 of the patent application range, wherein the eccentric rod and the cover are made of thermoplastic materials.

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