JP3030039U - Bicycle bell - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a bicycle bell that is not easily destroyed or stolen after a dome body is attached to a base portion. SOLUTION: A base portion 1 and a dome body 2 are provided, and a dish-shaped portion for forming a striking mechanism 4 and a support shaft 3 projecting from the center of the dish-shaped portion are provided on an upper portion of the base portion 1. Has been. On the support shaft 3, a hammer body 42 of the striking mechanism 4 which is rotated by operating a lever body 47 is rotatably supported. A tubular boss 5 is provided at the center of the inside of the dome body 2. A male screw 31 is formed on the upper portion of the support shaft 3, a nut 32 screwed to the male screw 31 is fixed to a position on the upper portion of the hammer body 42 that does not come into contact, and the boss 5 of the dome body 2 is screwed. Have been combined. The dome body 2 is formed so as to be firmly fixed between the nut and the swaged portion of the support shaft 3 by swaging the end portion 33 of the support shaft 3 which is projected from the hole of the boss 5. There is.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a bicycle bell attached to a bicycle handle.

[0002]

[Prior art]

 As shown in FIG. 4, a conventional bicycle bell is composed of a substantially dish-shaped base 111 having a support shaft 112 located at the center of the inside and a dome body 114 provided above the base 111. A striking mechanism 115 is provided.

A mounting member 113 made of synthetic resin is provided in a hole in the center of the inside of the dome body 114, and a convex portion 116 is formed on the mounting member 113. Further, a fixing member 118 is formed by molding a synthetic resin, which has a concave portion 117 corresponding to the convex portion 116. The mounting member 113 is fixed to the dome body 114 by fitting the convex portion 116 of the mounting member 113 and the concave portion 117 of the fixing member 118 with the dome body 114 interposed therebetween. Then, the dome body 114 is attached to the base portion 1 by driving the attachment member 113 into the support shaft 112 and press-fitting it.

[0004]

[Problems to be solved by the device]

 According to the conventional bicycle bell described above, the dome body 114 is only fixed by press-fitting the mounting member 113, which is a molded product of synthetic resin, onto the support shaft 112. Therefore, there is a possibility that the dome body 114 may come off the support shaft 112 relatively easily by falling or being twisted by a driver.

The present invention is intended to solve the above-mentioned conventional drawbacks and provides a structure in which the dome body does not easily come off the support shaft, so that the bicycle bell can be easily broken or the dome body can be easily broken. The purpose is to solve the problems such as the stolen.

[0006]

[Means for Solving the Problems]

 The bicycle bell of the present invention has the following configuration in order to achieve the above object. That is, (a) it is composed of a base and a dome body, and (b) a dish-shaped part for forming a striking mechanism and a support shaft projecting from the center of the dish-shaped part are formed on the upper part of the base. (C) A mounting part for mounting on a handlebar of a bicycle is provided on the lower part of the base part, and (d) a striking mechanism that is rotated by operating a lever body on the support shaft. A hammer body is rotatably supported, and (e) a boss having a female thread formed inside a tubular shape is projectingly and firmly fixed at the center of the inside of the dome body. ) A male screw portion is formed on the upper portion of the support shaft. A nut is screwed onto the male screw to fix the male screw member at a position where it does not come into contact with the upper portion of the hammer body. On the upper part of the fitted nut, by screwing a boss on the same support shaft, A dome body is attached, and (h) the dome body is fixed to the support shaft by caulking the end portion of the support shaft protruding to the upper part of the dome body through the female screw portion of the boss. It is that you are.

[0007]

[Embodiment of device]

 The base 1 is formed by synthetic molding of synthetic resin into a shape as shown in FIG. 1, and a substantially dish-shaped portion for forming a belling mechanism 4 is provided on an upper portion of the base 1. Further, a mounting portion 11 for mounting on a handlebar of a bicycle is formed on a lower portion of the base portion 1. A mounting plate 62 having a hole 61 for screwing corresponding to the mounting portion 11 is formed. The base portion 1 is attached to the handle of the bicycle by the attachment portion 11 and the attachment plate 62. A dome body 2 attached to a metallic support shaft 3 protruding from the center of the base 1 is provided above the base 1. The dome body 2 is made of metal and has a diameter slightly larger than that of the base 1.

On the substantially dish-shaped portion provided on the base portion 1, there is formed a striking mechanism 4 composed of a hammer body 42 having a striking ring 43 made of metal at both ends for striking the dome body 2. It is being touched. The hammer body 42 is rotatably supported on the support shaft 3. A nut 32 is screwed onto the upper portion of the hammer body 42 of the supporting shaft 3 so as to prevent the hammer body 42 from rotating and prevent the hammer 32 from coming off the supporting shaft 3. . A pinion 41 is integrally formed in the lower portion of the hammer body 42, and a gear 44 meshing with the pinion 41 is rotatably provided on the support shaft 13. A pinion 45 is integrally formed at the lower part of the gear 44, and a fan-shaped rack 46 that meshes with the pinion 45 is supported by the support shaft 12. At the other end of the rack 46, a lever 47 integrally formed with the rack 46 is formed so as to project to the outside from a notch 14 provided on one side of the base 1. A return spring 49 is attached to the hook 48 provided on the rack 46 and the locking claw 15 of the base 1.

When the lever 47 of the striking mechanism 4 is moved against the spring 49, the rack 46 connected to this swings, and the pinion 45 meshing with the rack 46 rotates. A hammer body 42 having a striking ring 43 is rotated via a pinion 41 that meshes with a gear 44 that rotates integrally with the pinion 45. That is, when the lever 47 is moved, the hammer body 42 is configured to rotate in association with the operation of the lever 47.

A male screw 31 is formed on the support shaft 3. At the center of the inside of the dome body 2, a cylindrical boss 5 having a female screw 51 formed therein is projected and firmly fixed. Therefore, by screwing the female screw 51 onto the support shaft 3, the dome body 2 is fixed. It can be attached to the support shaft 3. When the boss 5 is screwed to a position where it comes into contact with the nut 32 fixed to the upper portion of the hammer body 42, it cannot rotate any more. That is, the dome body 2 cannot rotate. In this state, as shown by the dotted line in FIG. 3, the upper end 33 of the support shaft 3 is formed so as to project above the dome body 2. Then, the upper end 33 of the support shaft 3 is crimped so that the boss 5 does not rotate in the direction in which the boss 5 comes out of the support shaft 3.

With the above structure, the boss 5 is prevented from rotating in the direction of the base 1 on the support shaft 3 by the nut 32, and is rotated in the direction of removal by the deformed portion of the upper end of the support shaft 3 due to caulking. Can be stopped. That is, since the boss 5 cannot rotate in any direction, the dome body 2 cannot be pulled out or rotated with respect to the base 1.

[0012]

【Example】

 According to one embodiment of the above invention, the dome body 2 is formed into a substantially bowl shape by pressing an aluminum plate. Its diameter is approximately 55 mm and its height is approximately 15 mm. Two protrusions 21 are formed on the periphery of the dome body 2 so as to protrude inward by about 3 mm. A sound can be generated by hitting the protrusion 21 with the hammer body 42.

A stepped recess 22 for attaching the seal 6 is formed on the upper surface of the dome body 2. Since the dome body 2 is attached so as not to rotate with respect to the base portion 1, for example, in the case where a portrait caricature sticker of a character is attached to the stepped recess 22, the face is upside down when viewed from the child's side. There is no chance of becoming. Since the caulked portion is formed at a portion slightly lower than the surface of the stepped recessed portion 2, there is no caulking unevenness on the seal surface.

There are various methods for caulking the tip of the support shaft 3, but any method can be used as long as the dome body can be fixed by deforming the tip.

[0015]

[Effect of device]

 As described above, the bicycle bell of the present invention has a structure in which the dome body is fixed to the support shaft by caulking, so that the bicycle bell does not easily come off or rotate. Therefore, unlike the case where it is fixed to the support shaft of the dome body through the resin part as shown in the conventional example, the structure of the invention of the present application can be applied even if a slight shock is caused by a fall or the driver is forced to pry. , The dome body does not easily come off the support shaft. Therefore, it is possible to provide a bicycle bell that is more durable than conventional products and that does not allow the dome body to be stolen easily.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts of a bicycle bell showing an embodiment of the present invention.

FIG. 2 is a cutaway side view of essential parts of the bicycle bell of the present invention.

FIG. 3 is a sectional view of an essential part of the bicycle bell of the present invention.

FIG. 4 is a cutaway side view of a main part of a conventional bicycle bell.

[Explanation of symbols]

 1 Base 2 Dome 3 Support Shaft 4 Striking Device 5 Boss 6 Seal

Claims (1)

[Scope of utility model registration request] 1. A bicycle bell provided with the following requirements. (A) Be composed of a base and a dome. (B) A dish-shaped portion for forming a striking mechanism and a support shaft projecting from the center of the dish-shaped portion are provided on the upper portion of the base portion. (C) An attachment portion for attaching to the handlebar of the bicycle is provided at the bottom of the base portion. (D) A hammer body of a striking mechanism that is rotated by operating a lever body is rotatably supported on the support shaft. (E) A boss having an internal thread formed in a cylindrical shape is projected from the inner center of the dome body and is firmly fixed. (F) A male screw portion is formed on the upper portion of the support shaft, and a nut is screwed onto the male screw so as to be fixed at a position where the upper portion of the hammer body does not abut. (G) The dome body is attached to the upper part of the nut screwed to the support shaft by screwing a boss to the support shaft. (H) The dome body is fixed to the support shaft by caulking the end portion of the support shaft protruding to the upper part of the dome body through the female screw portion of the boss.