CN1684606A - Toothbrush with leaf spring for ensuring correct pressure - Google Patents

Abstract

A toothbrush (1) is described which is designed to suddenly cause a reduction of the brush contact pressure of the brush head (2) on a tooth and/or gum surface when the toothbrush user applies excessive force to the toothbrush, and wherein the pressure reduction is effected b a spring device (5) having a curved cross-section, and wherein the toothbrush is made of a first, rigid plastic material and optionally a second, elastically yielding plastic material.

Description

The toothbrush that has the spring leaf of guaranteeing correct pressure

Technical field

The present invention relates to a kind of toothbrush, this toothbrush design is used for when the user of toothbrush has applied excessive brush power, can cause suddenly that toothbrush head reduces at the brush body contact pressure of tooth and/or gum surfaces.

Background technology

When brushing teeth, thereby importantly toothbrush too firmly is not pressed onto on tooth and the gums and damages them.

Toothbrush with flexible neck is known, and wherein the bristle head of this toothbrush and neck are pressed crooked backward with respect to handle according to brush.The shortcoming of this toothbrush is, user and be not easy to know when brushing teeth too firmly when he or she.Referring to example EP371293 and FR2053885.

In addition, EP371293 and EP281017 have described the toothbrush that has spring mechanism in neck.

For the toothbrush of practicality, it should be comfortable for user's use for it, and can not have than can be in the oral cavity comfortable move around bigger head and neck.

Summary of the invention

Provide a kind of brushing teeth order of the present invention and can allow the user recognize when exerting oneself very much, and prevent undue toothbrush of firmly brushing teeth simultaneously when he or she.In addition, this toothbrush should be not obvious basically greater than present ordinary toothbrush.

This purpose applies excessive brush power on toothbrush by the proper toothbrush user of a kind of design, when brush body contact pressure contacts pressure above the specific brush body on tooth and/or gum surfaces, the toothbrush that can cause the bending of toothbrush head is realized, and wherein should distortion implement by spring mechanism, wherein this toothbrush is made by first rigid plastic material, and wherein this toothbrush is characterised in that:

-this spring mechanism is arranged in the handle of toothbrush; And

-this spring mechanism comprises that at least one has the metal spring sheet of crooked cross section.

This spring mechanism causes the brush body contact pressure of this toothbrush head on tooth and/or gums to reduce suddenly.

In second embodiment, this spring mechanism comprises two or more leaf lamellas.

Further feature of the present invention and embodiment other other, disclose in the appended claims.

The shape of spring mechanism bending helps to give the toothbrush desired function.The bending of this spring leaf or these spring leafs represent it/they are subjected to the control of tension force and compression stress when toothbrush loads.When maximum moment that the bending that surpasses this spring leaf or these spring leafs can be born, it or they will yield to this power and buckling, thereby this bending is straightened.When the pressure relieve of toothbrush, the rigidity of spring will make this spring leaf or these spring leafs get back to its crooked shape, and toothbrush is got back to its original shape.

Description of drawings

To explain the present invention in more detail with reference to the accompanying drawings, wherein

Fig. 1 is the view according to the embodiment of toothbrush of the present invention;

Fig. 2 illustrates the toothbrush of Fig. 1 of the excessive brush power of just feeling better;

Fig. 3 is that brush body among Fig. 1 is along the cross-sectional view of A-A line;

Fig. 4 a illustrates " opening " part according to second embodiment of toothbrush of the present invention;

Fig. 4 b illustrates the amplifier section of Fig. 4 a;

Fig. 5 illustrates the embodiment of the outermost sheet with elongation; And

Fig. 6 a illustrates the dimeric embodiment of toothbrush according to the present invention;

Fig. 6 b illustrates another embodiment of the dimeric toothbrush according to the present invention;

Fig. 7 is the curve map that illustrates according to relation between the deformation force of toothbrush of the present invention and the distortion;

Fig. 8 a illustrates the spring leaf of non-loaded bending;

Fig. 8 b illustrates the flexural spring sheet that is subjected to excessive loads.

Should be appreciated that these figure only illustrate typical representative embodiments, and should not be regarded as and limit the scope of the invention.

The specific embodiment

Fig. 1 illustrates according to one oftoothbrush 1 of the present invention possible embodiment, and it hashead 2,neck 3 and handle 4.Bristle 7 is arranged on the head 2.Spring mechanism 5 is arranged in thehandle 4 of proximate neck 3.Thishandle 4 andhead 3 are made by first plastic material of rigidity, and thisspring mechanism 5 is surrounded by resilient flexible second plastic material 6 simultaneously.In embodiment shown in Figure 3, this spring mechanism is by twoparallel leaf lamellas 5 ', 5 " form.In this case, this spring mechanism is surrounded by elasticity second plastic material 6.This spring mechanism can be by according to brush body contact pressure, promptly causetoothbrush head 2 andneck 3 being made up of a plurality of parallel spring leafs with respect to the size of the pressure of thesehandle 4 abrupt bends.

Fig. 2 shows the toothbrush of the Fig. 1 after it uses with excessive brush power.The power that acts on the brush body has discharged thisspring mechanism 5, thereby thishead 2 andneck 3 move backward, because the angle between this handle and this neck becomes bigger suddenly, thereby the brush pressure reduces.When the user stops to apply excessive pressure, thisspring mechanism 5 will guarantee that this head and neck move back to home position as shown in Figure 1.This user's of toothbrush palmistry notices easily to the user that for the form of this surperficial work angle flip-flop he or she understands that this brushing teeth is wrong.

From Fig. 1 and 2 as can be seen, thisspring mechanism 5 betweennear neck 3 and handle 4zone handle 4 in.In the process of using this toothbrush, the user often is placed on this zone to thumb.The position ofspring mechanism 5 in handle means when the user brushes teeth too firmly the toothbrush outside, user oral cavity that will buckle.In addition, ifspring mechanism 5 is surrounded by resilient second plastic material, this material not necessarily will be sent into the oral cavity, and this is more suitable for the user.

Fig. 4 a and 4b show one or morespring leaf plate 5 is fixed to one another and be fixed to handle 4 and lead to the possible method of the zone line ofneck 3 on the toothbrush 1.In this case, thisneck 3 is connected with thisspring mechanism 5 via the recess 11 in this spring mechanism 5.Becausehole 10 thesehandles 4 that first plastic material of this rigidity passes in thisspring mechanism 5 are fixed to this spring mechanism.Should be appreciated that, this spring mechanism certainly in a like fashion, via hole in plate or recess, be fixed to handle 4 and thisneck 3 both.This spring mechanism also can be fastening in the mode beyond illustrating here.

In an embodiment of the invention, this second plastic material be transparent and thin plate in farthest one have mark and/or decoration, do not illustrate in the drawings.In addition, thesethin plate 5 farthest can stretch out towards the free end of this handle above other thin plate or other those thin plates, as shown in Figure 5.

In dimeric toothbrush shown in Fig. 6 a, this handle is divided into short separating end part 4 ' and remaininghandle 4 ",neck 3 is fixed on the separatingend part 4 '.Thisspring mechanism 5 has the part of stretching out from short end parts, and this weak point end parts is suitable for and handleremainder 4 " on match releasable joint of part of arrangement.In a possible embodiment, as shown in the figure, may have the connectingring 14 of second plastic material here.This ring can be positioned at separating end 4 ' and go up and/or thishandle remainder 4 " on.Fig. 6 b illustrates second embodiment of dimeric toothbrush.In this embodiment, thisspring mechanism 5 is arranged on theremainder 4 of this handle " in, and this handle portion is suitable for and this weak point end parts 4 ' and theseneck 3 releasable joints.

Fig. 7 illustrates the curve that concerns between inclination (deflection) according to toothbrush of the present invention and the inclination strength.This curve knows how excessive power triggers unexpected reducing if being shown in deformation force continues.In context, term " inclination " represents that thistoothbrush head 2 andneck 3 are with respect to the bending of thishandle 4 when compression stress is applied to this bristle 7.

Fig. 8 a and 8b illustrate non-loaded state, and (how the spring leaf of Fig. 8 curve a) (Fig. 8 b) when being overloaded produces " interrupting (break) ", thereby curved change is straight.When this load reduces, this spring leaf will be got back to its initial configuration, and (Fig. 8 a).

Can make the form of the toothbrush of manual toothbrush or motor operation according to toothbrush of the present invention.

Claims

(according to the modification of the 19th of treaty)

1. toothbrush, it is designed to apply excessive brush power on toothbrush before the user of this toothbrush, when the brush body contact pressure on tooth or the gum surfaces surpasses particular value, cause the bending of toothbrush head (2) with respect to toothbrush handle (4), inclination may be produced by spring mechanism (5), and wherein the firm part of the head of this toothbrush (2), neck (3) and handle (4) is made by first rigid plastic material, it is characterized in that

-this spring mechanism (5) is made up of at least one metal spring sheet, and the cross section that this spring leaf has curve contacts pressure to reduce this brush body suddenly when surpassing described value, and

-this spring mechanism (5) is arranged in this toothbrush handle (4), and has the spring bending point that is positioned at contiguous this toothbrush stem of toothbrush handle (4) (3).

2. toothbrush as claimed inclaim 1 is characterized in that, this spring mechanism (5) is positioned at the zone line between contiguous this toothbrush handle (4) and the neck (3).

3. asclaim 1 or 2 described toothbrushes, it is characterized in that this spring mechanism (5) becomes the leaf lamellas of stratum to form by at least two.

4. as the described toothbrush ofclaim 1,2 or 3, it is characterized in that this spring mechanism (5) is surrounded by the second resilient flexible plastic material (6) to small part.

5. toothbrush as claimed inclaim 3 is characterized in that

These thin plates of-this spring mechanism are mechanically connected to together at least on one point.

6. toothbrush as claimed inclaim 5 is characterized in that

-this mechanical connection is realized by hole (10) or recess (11) that first material extends through in these thin plates.

7. as one or more described toothbrush among the claim 4-6, it is characterized in that

-this second material (6) is transparent; And

Farthest one has mark and/or decoration in one these thin plates.

8. toothbrush as claimed in claim 7 is characterized in that

The thin plate of-described distal-most end extends in the free-ended direction of handle through other those thin plates in the longitudinal direction.

9. as one or more described toothbrush among the claim 1-8, it is characterized in that

The handle of-this toothbrush is long by forming respectively, two separable parts of the front portion (4 ') of the weak point of rear handle (4 ") and handle are formed,, this toothbrush stem (3) and this toothbrush head (2) are fixed on this handle; And

-this spring mechanism (5) has the part that stretch out at rear portion from handle front portion (4 ') or handle (4 "); and this spring mechanism (5) has and be designed for the projection that is inserted into the end regions that matches on second end regions that matches on the handle rear portion (4 ") or the handle front portion (4 '), and with this handle rear portion (4 ") on the end regions that matches on second end regions that matches or the handle front portion (4 ') form releasable the joint.

10. toothbrush as claimed in claim 9 is characterized in that

The end regions of-described handle front portion and/or the end regions at this handle rear portion have the connecting ring (14) of the second flexible flexible plastic material.

Claims (12)

1. toothbrush, it is designed to apply excessive brush power to toothbrush as the user of this toothbrush, when the contact pressure of tooth and/or gum surfaces contacts pressure above specific brush body, cause the bending of toothbrush head (2), and its medium dip is caused by spring mechanism (5), wherein this toothbrush is made by first rigid plastic material

It is characterized in that

-this spring mechanism (5) is arranged in the handle (4) of toothbrush; And

-this spring mechanism (5) comprises at least one metal spring sheet, and this spring leaf has the cross section of curve.

2. toothbrush as claimed in claim 1 is characterized in that, this spring mechanism (5) causes that suddenly toothbrush head (2) reduces at the brush body contact pressure of tooth and/or gum surfaces.

3. as claim 1 or 2 described toothbrushes, it is characterized in that this spring mechanism (5) is positioned at the zone line between contiguous toothbrush handle (4) and the neck (3).

4. as one or more described toothbrush among the claim 1-3, it is characterized in that this spring mechanism (5) has the bending point that is arranged near the toothbrush handle (4) of toothbrush stem (3).

5. as one or more described toothbrush among the claim 1-4, it is characterized in that this spring mechanism (5) is made up of two or more leaf lamellas.

6. as one or more described toothbrush among the claim 1-5, it is characterized in that it comprises second, flexible flexible plastic material (6), and this spring mechanism (5) is surrounded by this second material (6) at least in part.

7. toothbrush as claimed in claim 5 is characterized in that

The thin plate of-spring mechanism is mechanically connected to together at least on one point.

8. the toothbrush shown in claim 3 is characterized in that

-the hole (10) or the recess (11) that are extended through on these plates by this first material realized this mechanical connection.

9. as one or more described toothbrush among the claim 5-8, it is characterized in that

-this second material (6) is transparent; And

Farthest one has mark and/or decoration in-these thin plates.

10. toothbrush as claimed in claim 9 is characterized in that

The decorative parts of-described thin plate is extended in the free-ended direction of handle through other thin plate or other those thin plates in the longitudinal direction.

11., it is characterized in that as one or more described toothbrush among the claim 1-9

-this toothbrush is made up of the handle that forms toothbrush respectively (4 ") and two separable parts of the separable short portion of handle (4 '), and neck of this toothbrush (3) and head part (2) are fixed in this separable short portion; And

-described spring mechanism (5) has the part of stretching out from this weak point end parts (4 ') of this handle or this remaining handle (4 "); and be designed for and be inserted into the end regions that matches on second end regions that matches on the remaining handle (4 ") or the short end parts of handle (4 '), and be used for forming with it releasable joint.

12. toothbrush as claimed in claim 11 is characterized in that

The end of the described end regions of-this handle and/or residue handle has the connecting ring (14) of described second material.

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