CN2081126U

CN2081126U - Toy drum capable of making drum skin stretched tight and un-flabby

Info

Publication number: CN2081126U
Application number: CN 90225612
Authority: CN
Inventors: 黄清义
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-12-10
Filing date: 1990-12-10
Publication date: 1991-07-17

Abstract

The utility model relates to a toy drum capable of making drum leather stretched tightly without loosing. The main structure of the toy drum is that both ends of a cylindrical drum rack are provided with an inner concave annular surface, and the annular surface is provided with a convex ring. The inner part of a ring sleeve for pressing the drum leather is provided with an inner concave annular ring which is corresponding to the convex ring, and another convex annular ring is arranged nearly beside the inner concave annular ring. With the double embedding structure, the drum leather of the toy drum is tightly fixed between the drum rack and the ring sleeve, so that the drum leather is not easy to loose, and the tympany is not in distortion state.

Description

Toy drum capable of making drum skin stretched tight and un-flabby

The utility model relates to a kind of toy drum, and is particularly a kind of lax to avoid the toy drum of tympanitic note distortion after drum head is tightened.

Shown in Figure 1 is a kind of decomposing schematic representation of known toy drum.This toy drum is combined by a drum frame A, two drum head B, two ring set C and several drawing pins D and constitutes, and wherein, drum frame A is a hollow support body cylindraceous, covers drum head B respectively on its two openend, at the soft plastic cement ring set C of the outer peripheral edges sheathed again of drum head B.During combination two drum head B are covered on two openends of bulging frame A and tighten drum head B, on periphery, cover ring set C again, get the middle position that drawing pin D is pressed into ring set C at last, and make the nail point of this drawing pin D bottom pass ring set C, drum head B and be positioned on the bulging frame A, the then complete driving fit of the head of a nail on drawing pin D top is on ring set C, to tighten drum head B.

There is the shortcoming of the following stated in said structure:

(1) processing is difficult for: tightening of drum head is difficult for finishing, and after the tension, because of the elasticity of drum head itself or knocked for a long time, drum head relaxed gradually.

(2) the ring set combination is difficult for neat: because the employed ring set material of known toy drum is softer, there is not positioning design yet, therefore ring set often is prone to the phenomenon of distortion after machining, and correspondingly the position of drawing pin also can't be located, thereby can cause the coarse sensation of quality.

(3) quality of drum head degree of tautness is not easy to grasp control, so just causes the phenomenon of tympanitic note distortion easily, and the sensation of giving a kind of low level of consumer.

(4) general toy drum all is by active child uses that be at play, therefore, and when the child of naughtiness oppresses drum head, with regard to the phenomenon that causes drum head to be drawn back easily or relax.

(5) the only mat drawing pin set of tightening structure of known toy drum is so unclamp easily when drum head is beaten by gravity, relax.

Based on the existence of above-mentioned shortcoming, and make under the consideration of toy drum stay in grade, the design people has designed toy drum of the present utility model, to overcome unstable or other the foreseeable shortcoming of above-mentioned known toy drum quality that fixed form is caused.

The purpose of this utility model promptly is to provide a kind of with simple design, toy drum drum face can be tightened and difficult relaxing really, and be made the solid more strong toy drum of the tympanitic note that knocks generation.

Principal character of the present utility model is, bulging frame two openend outer rims at hollow cylindrical are respectively established the anchor ring of an indent, establish a convex hole in the central position of anchor ring, each lid is established a drum head on two anchor rings again, the sheathed plastic cement ring set of difference outside drum head, above-mentioned ring set cooperates the anchor ring of drum frame and designs, it is thicker near drum frame side, and it is thinner away from drum frame side, and on the medial surface of ring set, offer an indent ring, match with the convex hole of drum frame in the position of this indent ring setting, and at the other protrusion ring that also is provided with of this indent ring.During combination, the convex hole of mat drum frame and the mutual fit of indent ring of ring set, can do tightening of first road to drum head, pushing against of other protrusion ring of mat indent ring and drum head anchor ring done second road and tightened again, outside ring set, nail on drawing pin at last further this drum head and ring set are fixed in bulging frame, can reach the purpose that is not easy to relax.

Further specify architectural feature of the present utility model and purpose below in conjunction with accompanying drawing.

Fig. 1 is a kind of perspective exploded view of known toy drum;

Fig. 2 is a decomposing schematic representation of the present utility model;

Fig. 3 is a part assembled sectional view of the present utility model.

Please consult Fig. 2 earlier, the utility model is made up of a drum frame 1, left and right each plastic cement ring set 2, two drum heads 3 and several drawing pins 4.Drum frame 1 is the cylinder-like body of a hollow, its left and right sides forms an openend respectively, on the openend outer peripheral edges, respectively be provided with the indent anchor ring 11 that a width matches with ring set 2, form a vertical ring wall 111 in indent anchor ring 11 by drum frame 1 one ends, above-mentioned ring wall 111 can make plastic cement ring set 2 fitly be inserted in the location easily; In addition, be provided with a small convex hole 12 in indent anchor ring 11 centre.

Please cooperate Fig. 3, plastic cement ring set 2 of the present utility model is made of one piece by predetermined material (as nylon), these ring set 2 thickness of two sides differences, big and be pushing and drawing shape and bring together near drum frame 1 one side thickness to side, and make that appearance was smooth-going slick and sly shape when ring set 2 was combined on the bulging frame 1, to increase the aesthetic feeling of product.Week circle middle position offers an indent ring 21 that cooperates drum frame 1 convex hole 12 in ring set 2, also is provided with one and protrudes ring 22 being close to indent ring 21 sides.When drum head 3 covered 2 of bulging frame 1 and ring sets, the fit mutually of mat convex hole 12 and indent ring 21 can form the first road embedding system with location drum head 3; Protrude abutting against mutually of ring 22 and bulging frame 1 indent anchor ring 11 surfaces in addition on the mat ring set 2, compress drum head 3 once again and form the second road embedding system; Be pressed into drawing pin 4 in appropriate location, plastic cement ring set 2 outside more at last, can be with two drum heads 3 firm and be fixed on two openends of bulging frame 1 with tightening.

Can be found out significantly that by the above the utility model has overcome known toy drum in the shortcoming of making and using, and has following advantage:

(1) handling ease: tightening of drum head can be finished more simply.

(2) ring set is neat: ring set of the present utility model and drum have a location structure between frame, thus be easy to be inserted in the location man-hour adding, and do not have modification, crooked phenomenon produces, and can improve the quality of product.

(3), can overcome known toy drum and have only drawing pin to compress the phenomenon of the degree of tautness deficiency that drum head causes because the indent ring of particular design and the blocking location of protruding ring.

(4) drum head be difficult for lax, tympanitic note is more solid strong: drum head of the present utility model is formulated the position because of dual embedding is arranged, and drawing pin is fixing, therefore be difficult for producing lax phenomenon, so durable and tympanitic note is difficult for distortion.

Make a general survey of above-mentionedly, architectural feature of the present utility model can provide a kind of really and has that tympanitic note is undistorted, the toy drum of handling ease and advantage such as durable in use, and more known really toy drum tool has an enormous advantage, and can reach its intended purposes.

Claims

1, a kind of drum head that makes is tightened unflagging toy drum, includes:

One drum frame is roughly hollow support body cylindraceous, has two openends in both sides;

Two drum heads cover bulging frame respectively on two openends;

Two ring sets, casing pressure drum head and be separately fixed at two openend outer peripheral edge of bulging frame;

Several drawing pins press solidly on ring set;

It is characterized in that: two openend outer peripheral edge of described bulging frame form the anchor ring of an indent respectively, are provided with a convex hole on anchor ring, and described ring set inboard is provided with the indent ring of a cooperation drum frame convex hole, and at other another protrusion ring that is provided with of this indent ring.