EP1727445A1 - Device for holding the head of a toothbrush - Google Patents

Device for holding the head of a toothbrush

Info

Publication number
EP1727445A1
EP1727445A1 EP04801147.2A EP04801147A EP1727445A1 EP 1727445 A1 EP1727445 A1 EP 1727445A1 EP 04801147 A EP04801147 A EP 04801147A EP 1727445 A1 EP1727445 A1 EP 1727445A1
Authority
EP
European Patent Office
Prior art keywords
holding
toothbrush
retaining
characterized
bristle carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04801147.2A
Other languages
German (de)
French (fr)
Other versions
EP1727445B1 (en
Inventor
Reto Straehler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trisa Holding
Original Assignee
Trisa Holding
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CH4962004 priority Critical
Application filed by Trisa Holding filed Critical Trisa Holding
Priority to PCT/CH2004/000724 priority patent/WO2005089592A1/en
Publication of EP1727445A1 publication Critical patent/EP1727445A1/en
Application granted granted Critical
Publication of EP1727445B1 publication Critical patent/EP1727445B1/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46DMANUFACTURE OF BRUSHES
    • A46D3/00Preparing, i.e. Manufacturing brush bodies
    • A46D3/08Parts of brush-making machines
    • A46D3/087Holders or supports for brush bodies

Abstract

The device for fixedly holding the head of a toothbrush (12) in a processing machine comprises holding parts (42) with a support surface (54) that is formed on a holding flange (62). The holding flange (62) is inserted between the bristle carrier (28) and the holding plate (42) of the head of the toothbrush (12) and supports the bristle carrier (28) with the support surface (54) thereof.

Description

Vorric t ng for holding a tooth burst head

The present invention relates to a device for retaining a dental burst head in a

Processing machine.

Conventional toothbrushes are made of a

Toothbrush head, an adjoining

Toothbrush neck and an adjoining this toothbrush handle. Of the toothbrush head the structure-giving part, and in particular of the bristles receiving part is typically made of a hard plastic, for example polypropylene. Of the

The toothbrush head may further comprise an elastic soft plastic material. In a known conventional stuffing curved bristle bundles are anchored by means of metal plates in existing holes in the hard plastic part of the brush head U-shaped. During this Stopfproze ss toothbrush heads are held by means of holding devices. This can, as is known for example from WO-A-98/58563, one with the free end of the tooth burst head cooperating retaining plate and two in the

The transition region from attacking toothbrush neck to the toothbrush head, development of a recording Stel in a

have clamping position movable brackets. This may be concave shaped to comprise the toothbrush head from the side. The front side of the tooth head burst with the holes for receiving the bristle bundle is exposed, during which the back of the tooth burst head is supported, in order to counteract the forces acting during the plug. The reliable safe • Hold the toothbrush at the toothbrush head and the exact positioning are very important especially in the tamping machine, so that the filling tool may take the form shaped holes in the toothbrush head properly. the bristles are usually subsequent to the stuffing process is cut to the desired length and then ground to round the end. Since considerable forces may occur on the toothbrush head even at these nachbearbeitenden processes, particularly in the cutting process, the toothbrushes are retained by means of holding devices and conveyed in both the tamping machine and in the post-processing station to processing station also typically.

The known holding devices have proven themselves for most toothbrushes. The problem, however, the detention of toothbrushes with specially trained toothbrush heads can be. Toothbrushes or toothbrush heads of this kind are known for example from the publications DE-u-29822826, DE-U-20109123, US-A-5, 269, 038 and US-A-5,799,354. All these toothbrushes have in common that they have a disc-shaped bristle carrier and a retaining web of a structure-imparting hard plastic. The retaining web is in each case over into the toothbrush neck and between the holding web and the bristle carrier a recess is present. This gives the bristle support opposite the holding web freedom of movement. This flexibility is achieved either by means of a material weakening in hard plastic, for example in the form of a film hinge or a thin bridge of material or a hinge made of soft rubber-elastic plastic. It is an object of the present invention to provide a holding device which ensures in a simple manner, a secure holding of the tooth head burst with reliable support of the bristle carrier.

This object is achieved with a device according to Claim. 1

The inventive holding device has a holding part with a retaining flange which engages between the bristle carrier and the holding web. A support surface of the holding flange cooperates with the bristle carrier, so that now the bristle carrier is positioned in spite of its mobility with respect to the holding web in the holding device and supported so that it can absorb the forces in the processing, such as stoppers, cutting and grinding, occurring.

Particularly preferred embodiments of the inventive device are specified in the dependent claims.

The invention will be explained in more detail in the drawing, the illustrated embodiments. In the figures, purely schematically:

Fig. 1 in top view and simplified a tamping machine and a post-processing machine, the toothbrushes to be processed are held by holding devices according to the invention; Figure 2 in view of a toothbrush head and part of the toothbrush neck of a first embodiment of a toothbrush, to its holder, the inventive device is particularly suitable.

Fig. 3 is a plan view of the toothbrush head and a toothbrush part of the neck of the toothbrush according to Fig. 2;

Figure 4 is a plan view of an inventive device with two located in the holding position holding portions in which they hold the toothbrush head of the toothbrush shown in Figures 2 and 3..;

Figure 5 is also a plan view of the apparatus shown in Figure 4, wherein the holding parts are located in the receiving position..;

Figure 6 is bottom view of the toothbrush head and toothbrush neck of a further embodiment of a toothbrush with two bristle carriers and a holding web.

Fig. 7 in view of the toothbrush head and toothbrush neck of the toothbrush according to Fig. 6; Fig. 8 is a plan view of the toothbrush head and toothbrush neck of the toothbrush shown in FIGS. 6 and 7;

Fig. 9 shows a cross section through the in Figs 6, 7 and 8, toothbrush head.

Figure 10 is a side view of a device with two located in the holding position holding parts, which is not a bristled toothbrush head according to FIGS 6 - hold. 9. and

Fig. 11 that are available as in the Fig. 6 apparatus shown with in a receiving position holding parts, as well as not yet bristled toothbrush head.

The inventive device 10 for firmly holding a dental burst head 12 of a toothbrush 14 is intended for use in brush cutting machines. In particular, in tamping machines 16 and downstream of the latter Nachverarbeitungsmaschinen 18 with a cutting station for cutting the bristles to the desired length, a grinding station for rounding the free ends of the cut bristles and ev. Additional workstations 12, considerable forces may be exerted on the toothbrush head, which is why the invention holding device 10 in particular, but not exclusively, suitable for use in such machines.

The tamping machine 16 of known type comprises a tamping unit 20, by means of which the bristle bundles inserted into the toothbrush head 12th In this process, the toothbrush head 12 is held by means of a holding device according to the invention 10th 22 with a known feeding device is also referred to, which supplies 16 do not bristled toothbrush body of the tamping machine, which are single be introduced by means of a handling device in the holding device 10th Another handling device, not shown, takes out after the stuffing of the holding device 10, the respective toothbrush 14 and also passes it to a conveyor 24 for further transport to the post-processing machine 18. In this, the bristled toothbrushes 14 by means of a handling device in a respective retaining device 10 is inserted, said retaining devices be moved gradually in the feed direction V, to move the toothbrushes held by the holding devices 10 14 from one processing station to the next.

An embodiment of the toothbrush 14, for which the inventive holding device 10 is particularly suited is disclosed in the document DE-U-29822826th The toothbrush head 12, and a part of an adjoining the toothbrush neck 26 are reproduced in Figures 2 and 3. FIG. The toothbrush head 12 has two plate-shaped circular bristle carrier 28, which are provided on their upper side with receiving holes 30 for the anchoring of bristle bundles 32nd Next 12 has a toothbrush head to a holding web 34, which viewed in the longitudinal direction of the toothbrush 14 of the bristle carriers 28 passes into the toothbrush neck 26 below. The bristle carrier 28 are parallel to the holding web 34 and disposed at a distance from this, being fixed to the holding web 34 by means of a centrally arranged bridge of material 36th Since the cross-section of the bridge of material 36 is substantially smaller than the diameter of the bristle carrier 28 and the width of the retaining web 34 is provided between the holding web 34 and the bristle carriers 28 each an annular space or an annular recess 38th The bristle carrier 28, bridges of material 36 and the holding web 34 are produced together with the toothbrush neck 26 integrally made of hard plastic, for example polypropylene PP.

Figures 4 and 5 show an inventive fixture 10 for toothbrush heads 12 according to Figures 2 and 3. FIG.

The holding device 10 has a base plate 40, on which two holding parts 42 in the manner of a tenter clip in and opposite to the direction of the double arrow P are movably mounted. In Figure 4 are the retention portions 42 in the holding position 44. From this they are symmetrical to a median longitudinal plane of 46 in the direction of the double arrow P and thus perpendicular displaceable to the longitudinal central plane 46 into the position shown in Figure 5 receiving position 48th In the receiving position 48 the two retaining portions 42 are spaced from each other as far as that of the toothbrush head 12 therebetween takes place with clearance.

The retaining members 42 are mirror-symmetrical with respect to the longitudinal center plane of the 46th They have a rectangular basic shape, are connected to which is matched to the toothbrush head 12 receiving recesses 50 formed. This receiving recesses 50 are viewed from above, two circular segment-shaped recesses 52, the base area of ​​the depressions 52 form a support surface 54 for the bristle carrier 28th The radially inner end of these recesses 52 is defined by a Durchlassausnehmung 56 for the material bridges 36th Following this Durchlassausnehmung 56, the accommodating recesses are formed against the same 50 to the holding web 34 of the toothed burst head 12, as is indicated in Figure 4 with reference to the contours of the web 34 shown in phantom.

The recess 52 is radially on the outside by a clamping surface 58 in the form of a circular cylindrical segment limited. These clamping surfaces 58 cooperate in holding position 44 with the peripheral lateral surface 60 of the bristle carrier 28th The receiving recesses 50 thus delimit a retaining flange 62. with which the holding parts 42 in the holding position 44 engage in the recesses 38 between the bristle carriers 28 and the retaining web 34th Simultaneously, the bristle carrier 28 are supported on its bottom, the receiving holes 30 side facing away from the surface by means of support flanges 64 integrally formed on the supporting surfaces 54th

As is apparent in particular from Figure 4, the holding parts are arranged 42 in holding position 44 at a distance to each other. Thereby, it is ensured that the clamping faces 58 reach the outer surfaces 60 to the plant and the bristle carrier can clamp 28th

The support flanges 62 have, on their faces away from the support surface 54, lower side further supporting surfaces 54 'which apply when closing of the holding device 10 at the holding web. By means of the holding device 10 shown the toothbrush is thus held securely 14 with their toothbrush head 12, and accurately positioned. Characterized in that the bristle carriers are directly supported 28, can, in spite of its flexible connection to the retaining web, be easily subjected to considerable forces during the plug and in post-processing.

Only the sake of completeness it should be mentioned that, as seen from the figure 5, a toothbrush body is moved by means of a handling device into the position shown at 48 in receiving position that are available holding parts 42nd Subsequently, the holding members are brought into the holding position 44 42, after which the handling device releases the toothbrush body. The same steps are performed in the reverse order for releasing the toothbrush fourteenth

If desired, the recesses 38 may be filled after the Beborsten by means of a soft elastic plastic material, for example TPE, as is disclosed in the document DE-U-29822826th

Figures 6 - 9 show the toothbrush head 12 and the toothbrush neck 26 of a toothbrush 14 similar construction form as it is known from the document DE-U- 20109123rd It comprises two plate-like, approximately rectangular bristle carrier 28, which are seen in the longitudinal direction of the toothbrush 14 are arranged one behind the other. At the free end of the tooth head burst 12 there is a brush head segment 64, which is provided as the bristle carrier 28 having receiving holes 30 for fixing bristle bundles 32nd Between the brush head segment 64 and the toothbrush neck 26 a holding web extends at a distance from the bristle carriers 28 34. Another toothbrush head segment 66 having receiving holes 30 for the bristle bundles 32 of the bristle carrier 28 is located toothbrush neck side This further toothbrush head segment 66, of the toothbrush neck 26, the retaining bar 34 and the brush head segment 64 are made integrally from a hard plastic by injection molding. The two bristle holders 28 are also made of a hard plastic; they are connected with each other and with the brush head segment 64 and the other brush head segment 66 by means of a soft elastic plastic material. This perpendicular to the longitudinal direction of soft-elastic plastic material bridges are designated in the figures with 68 68th

The holding apparatus shown in Figures 10 and 11, 10 for receiving and retaining the toothbrush head 12 according to Figures 6 - 9 is constructed in principle the same as the retainer 10 according to Figures 4 and 5. It also has a base plate 40, to which two mirror-symmetrical to the longitudinal center plane 46 holding parts 42 are mounted displaceably perpendicular to the longitudinal center plane of the 46th In the figure 10, the holding parts 42 are shown in the holding position 44 and in Figure 11 in the receiving position 48th In contrast to the holding device 10 according to FIGS 4 and 5, however, the receiving recesses 50 are now against the same shape the toothbrush head 12 shown in Figures 6 -9. The substantially block-shaped holding parts 42 have an approximately oval segment-like recess 52, which corresponds to the lateral outer contour of the tooth head burst 12th The recess is bounded below by a supporting surface 54 which is intended to engage under the two bristle carriers 28 during the closing of the holding device 10 and this support surface. Peripheral side, the recess 52 is bounded by a clamping face 58th This is seen in cross section is concave shaped to the bristle carrier 28 to include in the holding position 44 of the retaining parts 42 from the side. The support surfaces 54 are, in turn, partially formed on a support flange 62, to which on the surface facing away from the support 54 side of the other support surface 54 'of the retaining rib 34 is integrally formed.

The retaining flange 62 extends in the longitudinal direction viewed over a range which is somewhat shorter than the recess 38 between the retaining bar 34 and the bristle carriers 28 on the longitudinal center plane 46 side facing the retaining flanges are limited 62 by a parallel to the longitudinal center plane 46 extending end face 70 , In the holding position 44 of the holding members 42, this front face 70 are kept in a small distance from each other. This in turn ensures that the clamping surfaces 58 move to the clamping of the bristle carrier 28 at the lateral jacket surfaces 60 to the plant.

seen in the longitudinal direction on both sides of the holding flanges 62, the receiving recesses are next to the same shape 50 to the brush head segment 64 and the other brush head segment 66, so that in the holding position 44 of the entire toothbrush head is held securely 12 of the holding portions 42 and the fixed only by means of a soft plastic material bristle carrier 28 without any problems the stresses in a tamping machine, or the like may be suspended.

The material thickness of the retaining flanges 62 at the front side 70 - 10 and 11 - or, if the Durchlassausnehmung 56 - 4 and 5 - be preferably at least 1 mm. In the direction of the longitudinal center plane 46 away this material thickness increases continuously. Further extend the supporting surfaces 54 and the further supporting surfaces 54 'to a plane parallel to the base plate 40 in a per however, so that upon closing of the holding device 10, a centering effect is achieved opposite angle, pointy.

Preferably, the base plate is shaped in such a between the holding parts 40, 42 that the toothbrush head 12 and the holding web is supported in the holding device 10 34th

In a toothbrush having a recess between the bristle carrier and holding web which is open in the longitudinal direction of the toothbrush at the free end of the tooth burst head - a toothbrush of this type is disclosed for example in US-A-5,799,354 - may be provided to support the bristle carrier a holding part, which retracts in the longitudinal direction of the toothbrush in this recess. In this embodiment, it is also conceivable to arrange the holding member in the holding device is stationary and postpone the toothbrush when introduced into the holding device to the holding flange.

Further, it is possible to hold the toothbrush head in a known manner in the holding device and additional support by means of a holding part of the bristle carrier. The holding part or the holding parts can enter, for example, from the side into the recess of the toothbrush in this case.

In order to relieve the toothbrush head especially when plug further measures can also be carried out on the toothbrush 12 itself. Thus, the diameter of the receiving holes 30 for the bristle bundles 32 may be equal to 1.7 mm are selected to be smaller. Studies have shown that with such a hole diameters, the force is minimal on the bristle carrier 28th Minimum diameter of the receiving holes 30 allow a minimum depth of the receiving holes 30, whereby the thickness of the bristle carrier 28 and the tooth burst head 12 can be kept minimal. Preferably, the depth of the receiving holes 30 is less than or equal to 4 mm.

It is also. conceivable to fill the recesses 38 in front of the stuffing partially or completely with a soft elastic material, for example TPE. In this case, soft elastic material is displaced by means of the holding part or the holding parts in order to support the bristle carrier 28th

Claims

claims
1. A device for holding a toothed burst head in a working machine, in particular tufting machine, having a a retaining flange (62) retaining part (42) and one at the holding flange (62) integrally formed supporting surface, wherein the retaining flange (62) is intended between one of a hard plastic material produced, to engage the plate-shaped bristle carrier (28) and a retaining web, also made of a hard plastic (34) of the tooth burst head (12) and with the support surface (54) supporting the bristle carrier (28).
2. Device according to claim 1, characterized in that the holding part (42) subsequent one, preferably to the support surface (54) and perpendicular to this extending clamping surface (58) which is intended to cooperate with a peripheral surface (60) of the to cooperate with the bristle carrier (28).
3. Device according to claim 2, characterized in that the clamping surface (58) - seen in cross section - has a concave configuration to cover the outer surface (60).
4. Device according to one of claims 1 to 3, characterized in that the retaining flange (62) - seen in cross section - at its free end (70) tapers and has a wall thickness of at least 1 mm.
5. Device according to one of claims 1 to 4, characterized in that the retaining flange (62) on its the supporting surface (54) side facing away from a further support surface (54 ') which is intended to cooperate with the retaining web (34) together to act.
6. Device according to one of claims 1 to 5, characterized in that the support surface (54) and optionally the clamping surface (58) and the further supporting surface (54 ') diametrically opposed to the bristle carrier (28) and the holding web (34) are formed.
7. Device according to one of claims 1 to 6, characterized by two holding members (42) which are movable between a holding position (44) and a receiving position (48) movable relative to each other.
8. Apparatus according to claim 7, characterized in that the retaining flanges (62) of the two holding parts (42) are designed mirror-symmetrically.
9. Apparatus according to claim 7 or 8, characterized in that the retaining flanges (62) are spaced from one another in the holding position (44).
EP04801147.2A 2004-03-24 2004-12-08 Device for holding the head of a toothbrush Active EP1727445B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH4962004 2004-03-24
PCT/CH2004/000724 WO2005089592A1 (en) 2004-03-24 2004-12-08 Device for holding the head of a toothbrush

Publications (2)

Publication Number Publication Date
EP1727445A1 true EP1727445A1 (en) 2006-12-06
EP1727445B1 EP1727445B1 (en) 2018-03-07

Family

ID=34959369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04801147.2A Active EP1727445B1 (en) 2004-03-24 2004-12-08 Device for holding the head of a toothbrush

Country Status (5)

Country Link
US (2) US8141958B2 (en)
EP (1) EP1727445B1 (en)
CN (1) CN100571573C (en)
BR (1) BRPI0418668B1 (en)
WO (1) WO2005089592A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101703345B (en) 2009-07-03 2011-04-20 扬州工业职业技术学院 Toothbrush mechanical automatic fixture
BE1022828A1 (en) * 2015-02-23 2016-09-15 Bart Gerard Boucherie Brush manufacturing device, brush body holder and method of making a brush

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269038A (en) 1991-03-29 1993-12-14 Bradley Terry G Rocker toothbrush
DE69210213T2 (en) 1992-03-31 1996-09-05 Boucherie Nv G B Brush manufacturing process
GB2289236B (en) 1994-05-09 1997-08-06 Boucherie Nv G B A brush making machine
US5799354A (en) * 1997-02-27 1998-09-01 Amir; Ehud Toothbrush
DE19720024A1 (en) 1997-05-13 1998-11-19 Zahoransky Anton Gmbh & Co Brush manufacturing machine
US5863102A (en) 1997-06-24 1999-01-26 Colgate-Palmolive Company Method and apparatus to permit attachment of bristles to toothbrushes with resiliently flexible heads and to thereafter permit the trimming and end rounding of such bristles
DE29822826U1 (en) 1998-01-05 1999-04-01 Trisa Holding Ag Brush head for a toothbrush
DE20109123U1 (en) 2001-05-31 2002-10-02 Schiffer Fa M & C Brush, in particular toothbrush

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005089592A1 *

Also Published As

Publication number Publication date
US8365339B2 (en) 2013-02-05
US20070241606A1 (en) 2007-10-18
CN100571573C (en) 2009-12-23
US8141958B2 (en) 2012-03-27
CN1942119A (en) 2007-04-04
WO2005089592A1 (en) 2005-09-29
BRPI0418668B1 (en) 2013-09-10
BRPI0418668A (en) 2007-06-05
US20120144613A1 (en) 2012-06-14
EP1727445B1 (en) 2018-03-07

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