BELL FOR A BICYCLE HANDLEBAR
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- MPR GMBH & CO KG
- Filing Date
- 2022-11-02
- Publication Date
- 2026-06-25
AI Technical Summary
Existing bicycle bells with sound bodies mounted at two points suffer from inadequate vibration, damping issues, and potential detachment, leading to reduced sound quality and safety concerns in road traffic.
A bicycle bell design with a sound body mounted at a single point using a single spring, preferably a leaf spring, to minimize damping and ensure free vibration, featuring a clamp made of plastic and a metal sound body connected via a single bearing, with an anti-removal device to prevent detachment.
The design enhances sound quality and safety by producing a louder, brighter tone with reduced damping and improved stability, ensuring the sound body remains securely attached during use.
Description
Field of invention
[0001] The invention relates to a bell, which is designed in particular for attachment to a bar-shaped bicycle handlebar. The bell can also be used for other bar-shaped handlebars, such as those on kick scooters. Background of the invention
[0002] Bicycles, which according to the invention also include those with an electric auxiliary drive, must include a bell or a bell for safe operation in road traffic.
[0003] A bell comprises a sound body which is set into vibration by a single strike with a mallet and can thus emit a clearly perceptible and sufficiently loud sound to warn other road users.
[0004] The patent application EP 3 199 436 A shows such a bell, which can be clamped onto a rod-shaped bicycle handlebar.
[0005] The bell described in this document is an embodiment in which the sound body extends at least partially in a ring shape around the clamp and thus also around the handlebar.
[0006] Compared to bells, where the sound body extends radially upwards from the clamp, this allows for a particularly compact design.
[0007] To allow the sound body to vibrate as freely as possible, in this embodiment it is mounted on two coil springs. Pins inside the coil springs, which extend into a recess in the sound body, as well as another pin around which no spring is arranged, are intended to prevent the sound body from detaching under mechanical stress.
[0008] However, practical experience has shown that this function is often not adequately fulfilled. As a result, the soundboard can move an undesirable distance from the clamp, potentially damaging the springs or even causing them to detach and be lost.
[0009] Furthermore, it has been found that, particularly when the hammer is pressed firmly and / or when the springs are slightly damaged, contact occurs between the pin and the surrounding spring when the bell is rung. This impairs the sound of the bell; in particular, it can then be so quiet that it is no longer suitable for use in road traffic.
[0010] Furthermore, the mounting of the sound body at two points causes a relatively high level of damping. Bicycle bells are also mentioned in documents CN 2 627 618 Y and CN 207,292,224 U known. Object of the invention
[0011] In contrast, the invention is based on the objective of at least reducing the aforementioned disadvantages of the prior art. Summary of the invention
[0012] The object of the invention is solved by a bell for a bicycle handlebar according to claim 1.
[0013] Preferred embodiments and further developments of the invention can be found in the subject matter of the dependent claims, the description and the drawings.
[0014] The invention relates to a bell for a bicycle handlebar.
[0015] This includes a clamp that can be attached to the handlebars.
[0016] The clamp is preferably made of plastic, in particular of polyoxymethylene or polyamide.
[0017] Preferably, the clamp can be attached to the rod-shaped handlebar using a screw.
[0018] According to a further embodiment of the invention, the clamp has a diameter and shape adapted to a clamping handle and can thus be used simultaneously for fastening the clamping handle.
[0019] A sound body extends around the clamp. The sound body is preferably made of a metal, for example an alloy comprising aluminium, magnesium and silicon, or brass.
[0020] Preferably, the sound body is designed in such a way that it generates a sound pressure of at least 85 dB (according to DIN ISO 7636:1986-02)
[0021] The sound body occupies a ring-shaped section around the clamp. The sound body thus extends, at least partially, around the clamp, while being spaced away from it to allow it to vibrate freely.
[0022] According to the invention, the sound body is connected to the clamp at a single point.
[0023] According to the invention, the sound body is connected to the clamp via a single spring. The spring is preferably located approximately in the middle with respect to the circumferential angle of the sound body.
[0024] It has been found that mounting the bell at only one point significantly reduces the damping introduced into the system compared to mounting it at two points. Therefore, compared to a bell mounted at two points, it can be louder and have a brighter tone. This increases safety.
[0025] In a preferred embodiment of the invention, the spring is designed as a leaf spring.
[0026] In particular, the spring can have a U-shaped section. This U-shaped section can be positioned perpendicular to the bell, i.e., open to the side, relative to its legs. This allows for a low-damping bearing to be provided in a compact space within a gap between the soundboard and the clamp. At the same time, the bell's construction is particularly simple.
[0027] The spring can be screwed or glued to the sound body and / or the clamp, for example.
[0028] In particular, the spring may be screwed to the soundboard.
[0029] In one embodiment, one leg of the spring is inserted into a channel in the clamp or the sound body. In particular, the clamp is made of plastic and includes a channel into which one leg of the leaf spring is inserted. The channel can, for example, be incorporated directly during the injection molding process of the clamp, which is designed as an injection-molded part.
[0030] The leg inserted into the channel may have a thickened head. The thickened head prevents the spring from slipping out of the channel.
[0031] In a further development of the invention, a removal safety device is arranged between the sound body and the bell. A removal safety device within the meaning of the invention is understood to be a component or assembly that prevents the sound body from being pulled off the clamp or that prevents the sound body from being pulled off so far that the spring is deformed.
[0032] The anti-removal device can be designed, in particular, as a pin connected to the clamp, which is guided through an opening in the sound body. The opening in the sound body has a larger diameter than the pin.
[0033] The anti-removal device is preferably designed such that the opposing components of the anti-removal device on the soundboard and the clamp do not touch. The soundboard is thus supported exclusively on the spring and can vibrate freely on the spring without the components of the anti-removal device touching.
[0034] Only when the bell is forcibly pulled on, contrary to its intended use, do the components of the anti-removal device come into contact. Specifically, the pin at the opening of the bell comes into contact, thus preventing further removal of the bell.
[0035] The anti-removal device can, for example, be located in the area of the spring. In particular, the anti-removal device can, for example, be in the form of a pin guided through a recess or a through-hole in the spring.
[0036] Positioning the anti-removal device near the spring allows for a compact design. Furthermore, the anti-removal device is located at the point where the risk of damage is greatest, namely on the spring itself.
[0037] According to an unclaimed embodiment, the sound body is mounted on the clamp by means of at least two coil springs, wherein the coil springs occupy at least sectionally between a top of the clamp and a bottom of the sound body the space they enclose.
[0038] According to a first essential aspect of the invention, there is therefore no component in the spring against which the spring could collide, in particular no pin, as in the prior art described at the outset.
[0039] The underside of the sound body is understood to be the surface of the sound body opposite the clamp. Recesses, such as holes for springs, etc., are not considered part of the underside within the meaning of the invention.
[0040] Accordingly, the top of the clamp is formed by the side of the clamp opposite the sound body, whereby recesses, such as bores for receiving the springs, do not belong to the top in the sense of the invention.
[0041] Furthermore, according to an unclaimed embodiment, an engagement element is provided on the clamp at a point between the two helical springs, in particular approximately midway between the helical springs with respect to the circumference. This engagement element engages a complementarily designed engagement element of the sound body in the space between the top and bottom surfaces of the sound body. The opposing walls of the engagement elements are spaced apart from each other by a gap.
[0042] The engagement elements can, as provided for in one embodiment, form a joint which connects the sound body and the clamp.
[0043] The joint is designed in particular as a swivel joint, which has an axis of rotation that runs between the sound body and the clamp parallel to a central axis of the clamp.
[0044] The sound body can be rotated around the axis of rotation and is secured against being pulled down by the axis of rotation.
[0045] Preferably, however, the pivot joint is formed by two engagement elements which are spaced apart from each other.
[0046] In particular, a bore in an engagement element of the sound body can be larger than a pin connected to the clamp. This creates a gap between the pin and the inside of the bore.
[0047] The struck sound object can thus vibrate freely, basically without touching the pen.
[0048] Otherwise, the joint secures the sound body in such a way that a guide pin in the springs is unnecessary.
[0049] Alternatively, the engagement elements can be a pin that engages in a sleeve.
[0050] The fact that the two engagement elements, in particular the pin and sleeve, interlock at least partially in the space between the underside of the sound body and the top of the clamp, improves the effect of the engagement elements.
[0051] The invention therefore provides to decouple the guiding of the sound body and the clamp to each other from the spring suspension.
[0052] This ensures, in particular, that the springs do not collide with a guiding component, such as a pin, when the bell is activated.
[0053] Thus, in the area of the springs, larger positional tolerances of the sound body relative to the clamp are also possible.
[0054] Furthermore, according to the invention, the space between the sound body and the clamp is also used to arrange a guide component provided for this purpose, which in turn makes the bell more stable and in particular leads to the sound body being less likely to detach under mechanical stress than is the case according to the prior art.
[0055] Preferably, the engagement elements interlock over a height of 0.5 to 3 mm, particularly preferably 1 to 2 mm, in the space between the sound body and the clamp.
[0056] The engagement element of the clamp can be designed, in particular, as a pin extending radially outwards.
[0057] The engagement element of the sound body can be designed in particular as a bore, for example as a bore that extends into an inwardly projecting extension of the sound body.
[0058] For the purposes of this invention, a bore is understood to be a cylindrical hole. The term "bore" therefore does not refer to the manufacturing process used to create it.
[0059] Thus, an engagement element, in particular the engagement element of the sound body, can also be designed as a sleeve which extends inwards from the underside of the sound body.
[0060] According to one embodiment of the invention, the central axes of the coil springs enclose an angle of 80 to 300°, preferably 110 to 150°.
[0061] The sound body can have a circumference of 180 to 360°, preferably 200 to 240°.
[0062] According to a further aspect of the invention, the invention relates to a bell for a handlebar, in particular with one or more of the features described above. The bell comprises a clamp that can be attached to the handlebar, wherein a sound body extends around the clamp and occupies an annular section around the clamp.
[0063] The sound body is spring-loaded, in particular mounted on the clamp by means of one or two springs.
[0064] Furthermore, the sound body can be set into vibration by means of a spring-mounted mallet.
[0065] According to this aspect of the invention, the mallet passes into the clamp via a leaf spring.
[0066] The leaf spring is designed in particular as a curved leaf spring and connects the clamp from its outside to the inside of the beater.
[0067] It is specifically intended that the clamp, leaf spring and mallet are formed from a single part, at least in the area of the leaf spring.
[0068] In particular, the hammer, clamp and leaf spring can be formed from a single injection-molded part.
[0069] This allows for the production of a particularly elegant, lightweight, and simply constructed bell. It suffices that the leaf spring is made of the same material as the clamp and the mallet, in particular polyoxymethylene or polyamide.
[0070] In another embodiment, it is conceivable that a spring-like metal element is injected into the component in the area of the spring.
[0071] Preferably, however, the leaf spring is made entirely of plastic.
[0072] The leaf spring may be located particularly adjacent to an upper counter-holder for the screw used to tighten the clamp.
[0073] According to another aspect of the invention, the invention relates to a bell for a bicycle handlebar, which may include in particular the features described above, both individually and in combination.
[0074] The bell comprises a clamp that can be attached to the handlebars, with a sound body extending around the clamp, forming an annular section around the clamp. In an unclaimed embodiment, the sound body is mounted on the clamp by means of at least two coil springs. According to the unclaimed embodiment, the coil springs are each hooked into an eyelet of the clamp.
[0075] An eyelet is understood to be a component with an opening, which is part of the clamp and into which the spring can be hooked.
[0076] By attaching the spring, a particularly stable connection between the spring and the clamp could be easily provided.
[0077] In particular, it is provided that the eyelet is arranged in a recess on the outside of the clamp.
[0078] For example, one end of the coil spring may be bent in such a way that it extends radially through the central axis of the coil spring.
[0079] This can then be inserted into an eyelet (bore) running tangentially to the clamp until the end of the spring snaps completely into the recess.
[0080] This allows for easy assembly and a particularly secure attachment of the spring. The soundboard may have internal recesses into which the coil springs engage.
[0081] With sufficient spacing between the coil springs, the mounted soundboard is adequately secured to the clamp due to the coil springs engaging in the recesses and the engagement elements. The springs each press in a different direction, and their relative positions cause them to snap into the recesses, thus fixing the soundboard in place.
[0082] Additionally, the spring can also be secured within the soundboard using an adhesive. Preferably, however, the spring is simply inserted into the recess without being bonded to the material. This reduces the damping effect of the spring compared to gluing.
[0083] The eyelets and the engagement element of the clamp are preferably an integral part of the plastic clamp.
[0084] This is specifically designed as a one-piece injection-molded plastic part.
[0085] According to a further aspect of the invention, this relates to a bell for a handlebar, in particular with one or more of the features described above. This includes a clamp that can be attached to the handlebar, wherein a sound body extends around the clamp and occupies an annular section around the clamp, the sound body being mounted on the clamp by means of at least two coil springs.
[0086] The sound body is set into vibration by means of a spring-mounted mallet. The mallet is specifically mounted on a pivot bearing and is pushed away from the sound body by a torsion spring.
[0087] According to the invention, when actuated, the mallet strikes a further spring at the end of its travel. This can in particular be a coil spring that is inserted into a mallet receptacle of the clamp.
[0088] This additional spring accelerates the rebound of the mallet after it strikes the soundboard. The faster rebound produces a greater volume, as the mallet is moved away from the vibrating soundboard more quickly.
[0089] The invention further relates to a handlebar grip which is designed as a clamping grip and which is attached to the bell described above.
[0090] The invention further relates to a bicycle which includes a bell as previously described. Brief description of the drawings
[0091] The subject matter of the invention will below be described with reference to exemplary embodiments shown in the drawings. Figs. 1' to 13 will be explained in more detail.
[0092] Fig. 1' to Fig. 5' show an embodiment of the invention according to the first aspect of the invention described above, in which the sound body is mounted at a single point. Fig. 1' is a perspective view. Fig. 2' is an exploded view. Fig. 3' This is a detailed view of the clamp. Fig. 3a' shows an alternative embodiment. Fig. 4' This is a perspective view of the leaf spring. Fig. 4a' is a slightly modified version. Fig. 5' is a central longitudinal section.
[0093] Figs. 1 to 10 show a bell according to another unclaimed aspect Fig. 1 and Fig. 2 These are perspective views of this embodiment of the invention. Fig. 3 This is a perspective view of an alternative embodiment. Fig. 4 is an exploded view of the in Fig. 1 and Fig. 2 depicted bell. Fig. 5 and Fig. 6 These are perspective views of the clamp. Fig. 7 is a detailed view of area A of the Fig. 6 . Fig. 8This is a detailed view of a cross-section of the clamp in the area where a coil spring is attached. Fig. 9 is a perspective view of the sound body. Fig. 10 is a central longitudinal section of the sound body. Figs. 11 to 13 show alternative embodiments of an exemplary embodiment in which the bell has a joint and the mallet is mounted by means of a leaf spring. Detailed description of the drawings
[0094] Referring to Fig. 1' to Fig. 5' An embodiment according to the first aspect of the invention is explained in which the sound body 20 of the bell 1 is mounted at a single point on the clamp 10.
[0095] Fig. 1' is a perspective view.
[0096] The bell 1 includes a clamp 10, which can be attached to a handlebar or to a handlebar grip.
[0097] The clamp 10 includes a clamping surface 12 which extends around the handlebar.
[0098] A screw 4 is screwed into the counter bracket 36. By tightening the screw 4, the bell 1 can be clamped onto the handlebar.
[0099] A sound body 20, designed as a ring segment, extends section by section around the terminal 10. In this embodiment, it assumes a circumferential angle of 160 to 220°.
[0100] The sound body 20 can essentially have the shape of a segment of a circular cylinder. In this embodiment, the sound body 20 has at least one transverse groove 23. The sound characteristics can be adjusted via the groove 23. For example, the natural frequency and thus the pitch of the system can be adjusted by removing material from the groove 23.
[0101] The sound body is connected to the terminal 10 via a single bearing 9.
[0102] The bearing 9 is located between the outside of the clamp 10 and the inside of the sound body 20.
[0103] Preferably, the bearing 9 is located essentially in the center with respect to the circumference of the sound body 20.
[0104] The sound body 20 can be set into vibration by means of the mallet 30.
[0105] The mallet 30 is in this embodiment (as in the embodiment according to Figs. 11 to 13 ) connected to the terminal 10 via a leaf spring 35.
[0106] The leaf spring 35 is U-shaped and extends from the underside of the hammer 30 in a U-shape to the outside of the clamp 10.
[0107] The hammer 30, leaf spring 35 and clamp 10 can be formed monolithically as a single injection-molded plastic component.
[0108] This design is also particularly compact and aesthetically pleasing.
[0109] The open side of the U of the leaf spring 35 is oriented distally with respect to the intended mounting position.
[0110] The counterholder 36 has a curved surface 38 adjacent to the leaf spring 35. This also ensures a compact design and is aesthetically pleasing.
[0111] Fig. 2' is an exploded view of the components of the in Fig. 1' Bell 1 as shown (except for the screw of the clamp).
[0112] The clamp 10 includes the two bearing blocks 53a and 53b.
[0113] A gap is arranged between the bearing blocks 53a, 53b. In the assembled state, a projection 25 of the sound body 20 engages in this gap.
[0114] The extension 25 extends approximately centrally from the inner surface of the sound body 20 inwards. The extension 25 is plate-shaped.
[0115] The extension 25 includes two threads 28. The leaf spring 60 can be connected to the sound body 20 by means of the screws 24.
[0116] Furthermore, the extension 25 includes a through-hole 29. The through-hole 29 is part of the pull-out protection. In this embodiment, the through-hole 29 is located approximately in the middle of the extension 25.
[0117] Fig. 3' This is a detailed representation of the clamp, specifically the area of the bearing blocks 53a, 53b.
[0118] A pin 55 extends through the bearing blocks 53a, 53b. In the assembled state, the pin 55 engages through the through-hole of the sound body (29 in Fig. 2' This provides a pull-off protection mechanism.
[0119] The extension of the sound body projects between the bearing blocks 53a, 53b.
[0120] A channel 56, which receives one leg of the leaf spring, is routed under the bearing blocks 53a, 53b.
[0121] In this embodiment, channel 56 has an approximately rectangular cross-section.
[0122] Between the bearing blocks 53a and 53b is a window 57, in which the clamp is open. The window 57 facilitates demolding of the injection-molded part.
[0123] Fig. 3a' Figure 1 shows a modified embodiment in which the channel 56 includes a pin 58 that projects into the channel 56.
[0124] In its assembled state, the pin 58 presses against the inserted leg of the leaf spring, thus improving the fixation of the leaf spring.
[0125] Fig. 4' This is a perspective view of the leaf spring 60.
[0126] The leaf spring 60 has a U-shaped section 64, from which the two legs 65a, 65b extend. The legs 65a, 65b run approximately parallel.
[0127] Leg 65a terminates at a plate 62 that runs transversely to leg 65a. Plate 62 is approximately perpendicular to leg 65a and projects inwards. Plate 62 encompasses the two through holes 61 for the fastening screws.
[0128] Furthermore, in this embodiment, the plate 62 has a central recess 63. The pin of the anti-theft device can pass through the recess 63.
[0129] Leg 65b is longer than leg 65a.
[0130] Leg 65b serves the purpose of Fig. 3' illustrated insertion into the channel (56 in Fig. 3' The leg 65b has a thickened head 66. This is so wide that it can still be forced through the channel, but in the assembled state it secures the spring 60 against slipping out.
[0131] Fig. 4a' is a modified embodiment of a leaf spring 60.
[0132] This has an additional stop 76 in the form of an edge step on the side opposite the thickened area 66. This improves the positioning of the leaf spring 60 during assembly.
[0133] Furthermore, a transition area 68 is provided in which the width of the spring behind the plate 62 gradually tapers until the width of the U-shaped section 64 is reached. Otherwise, the design of the leaf spring 60 corresponds to Fig. 4' .
[0134] Fig. 5' is an approximately central cross-section of bell 1. The pin 55 is shown. The pin 55 serves as a pull-out protection device and can have any cross-section, in particular a polygonal one.
[0135] The through-hole 29 of the sound body 20 has a larger diameter. This prevents the pin 55 from touching the sound body 20 when the bell rings.
[0136] The soundboard 20 is connected to the leaf spring 60 via the screws 54.
[0137] The opposite leg of the leaf spring is inserted into the channel 56, which runs along the bottom of the bearing blocks 53b.
[0138] The in Fig. 1' to Fig. 5' The bell shown is of simple construction and has an improved sound due to the mounting of the sound body 20 at only one single point.
[0139] Fig. 1 Figure 1 shows a perspective view of an embodiment of a bell 1 according to another embodiment. The bell 1 shown here is dimensioned such that it is designed as a clamp for a handlebar grip (not shown).
[0140] The bell 1 includes a clamp 10, which is designed for clamping attachment to the handlebar.
[0141] The clamp 10 includes a clamping surface 12 which rests against the handlebar.
[0142] To fasten, the clamp 10 can be tightened with the screw 4.
[0143] The screw 4 engages the nut 5 and tightens the clamp 10, which in this embodiment is made of plastic.
[0144] The ring-shaped metal sound body 20 extends around the terminal 12.
[0145] The ring-shaped sound body 20 is spaced apart with its inner side 22 from the outer side 13 of the clamp 10.
[0146] In an unloaded version, the sound body 20 is resiliently mounted on the clamp 10 via the two coil springs 3a, 3b.
[0147] In this embodiment, the coil springs 3a, 3b enclose an angle of 110 to 150°.
[0148] The sound body 20 is already mounted by the coil springs 3a, 3b in such a way that it can vibrate and does not fall down.
[0149] Under mechanical stress, the sound body 20 could easily be torn off or twisted to the side.
[0150] Therefore, the bell 1, with respect to its circumference, includes a guide element located centrally between the two coil springs 3a, 3b, which is formed from an engagement element 11 of the clamp 10 and an engagement element 21 of the sound body 20.
[0151] In this embodiment, the engagement element 11 of the clamp 10 is designed as a pin which engages in the engagement element 21 of the sound body 20, which is designed as a sleeve.
[0152] The intervention elements 11, 21 are spaced apart from each other by a gap and do not touch each other.
[0153] Only under strong mechanical stress, for example if the sound body 20 is improperly turned to the side, do the engagement elements 11, 21 collide and thus prevent the coil springs 3a, 3b from bending.
[0154] As soon as the sound body 20 is released again, it is centered in the position shown here by the coil springs 3a, 3b.
[0155] In order to make the sound body 20 sound, the bell 1 encompasses the hammer 30.
[0156] The mallet 30 comprises a front part 32, which strikes the sound body 20 after it is activated.
[0157] The front part 32 can, especially if the beater 30 is made of plastic, include an insert made of another material, such as metal, which strikes against the sound body 20.
[0158] The hammer 30 is spring-mounted.
[0159] The axis of this bearing is formed by the bolt 2, on which the hammer 30 is mounted at the clamp 10.
[0160] The mallet 30 also has a grip area 31. By pressing the grip area 31 towards the clamp 10, the front part 32 of the mallet 30 springs upwards.
[0161] When released, the mallet 30 springs back and the front part strikes the sound body 20, so that a tone is emitted.
[0162] Fig. 2 is another perspective view of the in Fig. 1 Bell 1 as depicted. The sound body 20 includes at least a section of its outer surface a circumferential groove 23.
[0163] The acoustic properties, such as tone and pitch, can be adjusted via the groove 23.
[0164] Fig. 3 is a perspective view of an alternative embodiment of the invention. In contrast to the one in Fig. 1 and Fig. 2 The bell shown is designed for direct attachment to the handlebar and not to a clamping handle.
[0165] In contrast to the previously described embodiment, the clamp 10 can be bent open to attach it to the handlebar without removing the handlebar grip. For this purpose, the clamp 10 comprises at least several segments 15, which can be folded against each other.
[0166] However, in terms of its other design and function, this embodiment corresponds Fig. 1 and Fig. 2 .
[0167] Fig. 4 is an exploded view of the in Fig. 1 and Fig. 2 depicted bell.
[0168] It can be seen that the clamp 10, which includes the pin-shaped extension 21, each includes an eyelet 40 for attaching the coil springs 3a, 3b.
[0169] The eyelet 40, the design of which will be explained in more detail below, is arranged in a recess 19 adapted to the cross-section of the respective coil spring 3a, 3b. The clamp is tightened with the screw 4, which engages in the thread 5.
[0170] In this embodiment, the thread 5 consists of a metal insert which is inserted into the clamp 10, which is otherwise made of plastic.
[0171] For storing the mallet 30, the clamp includes a mallet holder 14 with two lateral through holes 18.
[0172] The hammer 30 is inserted into the recess 17 of the hammer receptacle 14 with the opposing bearings 33, each of which has a through hole.
[0173] Thus, the beater 30 comes into contact with the beater holder 14.
[0174] The hammer 30 is fixed in place with the bolt 2.
[0175] To retract the mallet 30 against a spring preload or lift it away from the sound body 20, the torsion spring 6 sits on the bolt 2.
[0176] The mallet holder 14 further comprises a radially extending bore 16 in which another spring 7 is seated. This additional spring 7 causes the mallet 30 to rebound more quickly after striking the sound body 20, thus achieving a greater volume, preferably more than 85 dB.
[0177] In an unstressed embodiment, the coil springs 3a, 3b each comprise an end 8 bent inwards towards the axis. The coil springs 3a, 3b are inserted into the eyelet 40 by means of the end 8 and glued in place.
[0178] The sound body 20 includes the bores or recesses 24 for the coil springs 3a, 3b and the engagement element 21 arranged between them, which is designed as a sleeve-shaped extension 25.
[0179] When assembled, the coil springs 3a, 3b engage in the bores 24.
[0180] The pin 21 engages in the sleeve-shaped extension 25, but is spaced both radially and axially from the engagement element 21.
[0181] Fig. 5 Figure 10 is a perspective view of the clamp 10. The mallet receptacle 14 comprises a housing which extends radially outwards and which has the receptacle 17 for the bearings of the mallet.
[0182] Towards the sound body, the top of the mallet holder 14 is provided with the bore 16 for the additional spring.
[0183] Also visible is an eyelet 40 for one of the coil springs.
[0184] Fig. 6 This is another perspective view of terminal 10, in which eyelet 40 is shown.
[0185] Fig. 7 is a detailed view of area A of the Fig. 6 .
[0186] The eyelet 40 is shown. This includes a block 42 as a housing.
[0187] Block 42 is arranged in a recess 19 of the clamp.
[0188] The bore 41 for the end of the spring is located at the bottom of the block 42, which thus forms the eyelet 40.
[0189] With respect to the direction of travel, borehole 41 is aligned longitudinally.
[0190] For assembly, the spring is held with its end (8 in Fig. 3 ) inserted into borehole 41.
[0191] At the end of the assembly process of the spring, the cylindrical spring body snaps into the recess 19.
[0192] Fig. 8 This is a detailed representation of a cross-section of the clamp in the area of eyelet 40.
[0193] It can be seen that in this embodiment, block 42 does not protrude beyond the outer side 13 of the terminal.
[0194] Rather, block 42 sits completely within recess 19.
[0195] Block 42 has an elongated cross-section.
[0196] A groove is formed between the narrow side of block 42 and the edge of the recess 19, which is sufficiently wide to accommodate the coil spring.
[0197] The elongated shape of block 42 makes it easier to thread the end of the spring into bore 41.
[0198] Fig. 9 is a perspective view of the unused sound body 20.
[0199] In this view, the bore 24 can be seen in particular, in which a helical spring is inserted, preferably without being materially bonded.
[0200] Fig. 10 is a central longitudinal section of the sound body.
[0201] The bores 24 preferably have a depth of 1 / 3 to 2 / 3 of the thickness of the sound body at this point.
[0202] In this embodiment, the bore 26, through which the sleeve-shaped engagement element 21 is defined, is located on the inside 22 of the sound body.
[0203] The engagement elements of the clamp and the sound body therefore only overlap in the
[0204] Area of the gap between the two structural elements. It has been found that this significantly improved the stability of the bell.
[0205] Fig. 11 is a perspective view of another unclaimed embodiment of a bell 1.
[0206] Except for the differences described below, this can be designed like the other embodiments described above.
[0207] In particular, terminal 10, as shown here, can be partially formed from segments 15.
[0208] Even in this unstressed embodiment, the sound body 20 is resiliently mounted on the clamp 10 by means of two coil springs 3a, 3b.
[0209] One difference is that the engagement elements of clamp 10 and sound body 20 form a joint 50, namely a swivel joint.
[0210] For this purpose, two side parts 51 protrude from the top of the clamp between the springs 3a and 3b, through which a pin 52 is guided.
[0211] The pin 52 forms the axis of rotation of the joint 50 and secures the sound body 20 against being pulled downwards.
[0212] Another difference lies in the fact that the beater 30 transitions into the clamp 10 via a curved leaf spring 35.
[0213] As in the approximately central cross-section of the unclaimed embodiment according to Fig. 12As shown, the leaf spring 35 forms a U-shaped contour, the legs of which are connected to the clamp 10 and the beater 30. The base of the U is oriented proximally.
[0214] This contour starts from the top of the clamp 10 and runs in an arc towards the underside of the beater 30.
[0215] The hammer 30, leaf spring 35 and clamp 10 are formed as a single injection-molded part. This ensures a particularly lightweight and aesthetically pleasing design.
[0216] The leaf spring 35 is thinner than the hammer 30 and / or the clamp 10. This ensures sufficient flexibility of the leaf spring 35.
[0217] In this embodiment, the leaf spring 35 is spaced apart from the counterholder 36 by means of a gap 37, by means of which the clamp 10 is tightened via the screw 4.
[0218] When actuated, the mallet with the handle area 31 can be pressed towards the clamp 10 until the handle area 31 comes to rest against the counter bearing 36.
[0219] This ensures that the leaf spring 35 is not overstretched when actuated.
[0220] The upper surface of the counterholder 36 can essentially follow the contour of the leaf spring 35, i.e., be curved.
[0221] The joint can be seen to have a sound body 20 with an engagement element 21 projecting from its inside towards the clamp 10.
[0222] The engagement element 21 includes a bore 27 which has a larger diameter than the pin 52 guided through the bore 27.
[0223] Thus, a gap exists between the pin 52 and the inside of the bore 27. This gap allows the sound body 20 to vibrate freely.
[0224] In this embodiment, the joint 50 serves only to firmly connect the sound body 20 and the clamp 10 in such a way that the sound body 20 cannot be pulled down from the clamp 10.
[0225] During assembly, the springs 3a, 3b are inserted and then the sound body 20 is placed on top and secured by means of the pin 52.
[0226] Due to the joint 52, the bores 24 and the recesses 19, in which the coil springs 3a, 3b sit, can be designed as cylindrical blind holes.
[0227] No further securing of the springs 3a, 3b, for example by hooking or gluing, is required.
[0228] The springs 3a, 3b can extend freely through space between the inside of the sound body 20 and the outside of the clamp 10, in particular without a guide pin extending through the springs 3a, 3b.
[0229] Overall, a bell that is easy to assemble, with improved sound characteristics and better stability, was provided. Reference symbol list
[0230] 1 Bell 2 Bolt 3a, 3b Coil spring 4 Screw 5 Nut 6 Torsion spring 7 Another spring 8 End of coil spring 9 Bearing 10 Clamp 11 Engagement element 12 Clamping surface 13 Outside 14 Hammer receptacle 15 Segment 16 Bore 17 Recess 18 Through hole 19 Countersink 20 Sound body 21 Engagement element 22 Inside 23 Groove 24 Bore 25 Extension 26 Bore 27 Bore 28 Thread 29 Through hole 30 Hammer 31 Handle area 32 Front part 33 Bearing 34 Through hole 35 Leaf spring 36 Counter holder 37 Gap 38 Curved surface 40 Eyelet 41 Bore 42 Block 50 Joint 51 Side piece 52 Pin 53a, 53b Bearing block 54 Screw 55 Pin 56 Channel 57 Window 58 Tenon 60 Leaf spring 61 Through hole 62 Plate 63 Recess 64 U-shaped section 65a, 65b Leg 66 Thickened head 67 Stop 68 Transition area
Claims
1. A bell (1) for a straight handlebar, in particular a bicycle handlebar, comprising a clamp (10) attachable to the handlebar, and a sound body (20) extending around the clamp (10) and covering a ring-shaped section around the clamp (10), the sound body being connected to the clamp via a spring (60); characterised in that the sound body (20) is connected to the clamp (10) at a single location.
2. The bell according to the preceding claim, characterised in that the sound body is connected to the clamp via a leaf spring.
3. The bell according to any one of the preceding claims, characterised in that the spring has a U-shaped section, in particular a U-shaped section that is open toward the side of the bell; and / or characterised in that the spring is screwed or glued to the sound body and / or to the clamp; and / or characterised in that one leg of the spring extends into a passage of the clamp or of the sound body.
4. The bell according to any one of the preceding claims, characterised in that a pull-off prevention means is arranged between the sound body and the bell.
5. The bell according to the preceding claim, characterised in that the pull-off prevention means is in the form of a pin which is connected to the clamp and extends through an opening of the sound body, wherein the opening of the sound body has a larger diameter than the pin.
6. The bell according to any one of the two preceding claims, characterised in that the pull-off prevention means is arranged within the range of the spring, in particular extends through a recess or a through-hole of the spring.
7. A handlebar grip or bicycle, comprising a bell according to any one of the preceding claims.