Ball Chain
By integrating elastic threads and a positional restriction fulcrum into the ball chain design, the instability issues of conventional ball chains are addressed, resulting in a more stable and robust product with enhanced elasticity and synchronized ball movement.
Patent Information
- Application Number
- JP2025000178U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Conventional ball chains lack elasticity and plasticity, leading to instability during use.
The ball chain design incorporates elastic threads through hollow connection axes with a positional restriction fulcrum to achieve elasticity and synchronized movement of the balls.
This design enhances the stability and robustness of the ball chain by allowing elastic stretching and synchronized ball movement, providing high plasticity and elasticity while preventing overload.
Smart Images
Figure 0003250615000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to the technical field of ball chain design, and more particularly to ball chains. [Background technology]
[0002] Currently, ball chains are often used as tethers in the fields of accessories, product tags, curtains, etc. Ordinary metal balls are connected to each other by connecting shafts and are connected at intervals to form a movable ball chain. Although the ball chain has a large degree of freedom of movement, it lacks elasticity and plasticity, so it is not very stable during use. In addition, although some rosaries are connected using elastic threads, they have the defect of being insufficiently fast. Summary of the Invention [Problem to be solved by the invention]
[0003] The present invention provides a ball chain to solve the problem that the conventional ball chain provided in the background art has a large degree of freedom of movement, but lacks elasticity and plasticity, and therefore is not very stable during use and has insufficient robustness. [Means for solving the problem]
[0004] The technical means of the present invention are realized as follows:
[0005] The ball chain includes a number of balls and a number of hollow connecting shafts that connect the balls, with two adjacent connecting shafts having opposing ends that are positioned inside the ball and having connecting portions at both ends that prevent the balls from falling off the connecting shafts, with elastic threads passing through the hollow portions of the connecting shafts, and with position limiting fulcrums that serve to fix the elastic threads.
[0006] Preferably, the position limiting fulcrum is located at a middle position of the connecting shaft.
[0007] Preferably, the position limiting fulcrum is an indentation provided on the connecting shaft and extending toward the center of the connecting shaft, and the elastic yarn is fixedly connected to the connecting shaft by the inside of the indentation coming into contact with the elastic yarn.
[0008] Preferably, the position limiting fulcrum is a groove provided on the connecting shaft and recessed toward the center of the connecting shaft, and the groove comes into contact with the elastic yarn to realize a fixed connection between the elastic yarn and the connecting shaft.
[0009] Preferably, the coupling portion is a convex ring integrally connected to the end of the connecting shaft, the convex ring having an outer diameter larger than the diameter of the notch in the ball. Effect of the Invention
[0010] By using the above technical means, the beneficial effects of the present invention are as follows:
[0011] The present invention has a simple design and structure. The elastic thread is threaded through the connecting shaft to achieve elastic expansion and contraction of the ball chain. A position limiting fulcrum is provided on the connecting shaft to fix the elastic thread, thereby achieving the purpose of the balls moving synchronously when pulled. In addition, the connecting part at the end of the connecting shaft provides overload protection for the ball chain, and has the advantages of high plasticity, high elasticity and stable structure. [Brief description of the drawings]
[0012] In order to more clearly describe the embodiments of the present invention or the technical means in the prior art, the drawings necessary for the description of the embodiments or the prior art will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts.
[0013] [Figure 1] FIG. [Diagram 2]FIG. 2 is a schematic diagram of the present invention in a tightened state. [Diagram 3] FIG. 2 is a schematic diagram of the present invention in a pulled state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0014] Hereinafter, the technical means in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any creative effort are all included in the protection scope of the present invention.
[0015] As shown in Figures 1 to 3, the ball chain includes a number of balls 1 and a number of hollow connecting shafts 2 that connect the balls 1, and two adjacent connecting shafts 2 have opposing ends that are positioned inside the ball 1 and have connecting parts 5 at both ends that prevent the ball 1 from falling off the connecting shaft 2, and the connecting parts 5 abut against the internal positions of the notches in the balls 1 when the ball chain is pulled, thereby preventing the problem of the connecting shafts 2 and the balls 1 falling off from each other.
[0016] An elastic thread 3 is provided through the hollow portion of the multiple connecting shafts 2, and the connecting shafts 2 are provided with position limiting fulcrums 4 that serve to fix the elastic thread 3. By providing the elastic thread 3, the elastic stretch effect of the ball chain can be achieved, and the purpose of providing the position limiting fulcrums 4 is to fixedly connect the connecting shafts 2 and the elastic thread 3 at a certain point, so that when the elastic thread 3 is pulled, each ball 1 is separated at the same interval to realize the synchronous movement of the balls 1, and the convenience and beauty of use can be improved.
[0017] In actual use, the elastic thread 3 can be replaced with an object having elasticity and stretchability, such as a spring or a rubber band.
[0018] Specifically, the position limiting fulcrum 4 is located at the middle position of the connecting shaft 2, which has the advantage that the position limiting fulcrum 4 is spaced equally apart from the connecting parts 5 at both ends, making it easy to process.
[0019] Specifically, the position limiting fulcrum 4 is an indentation provided on the connecting shaft 2 and extending toward the center of the connecting shaft 2, and the indentation has a concave structure formed by punching, so that the elastic yarn 3 is fixedly connected to the connecting shaft 2; or the position limiting fulcrum 4 is a groove provided on the connecting shaft 2 and recessed toward the center of the connecting shaft 2, and the groove comes into contact with the elastic yarn 3 to realize a fixed connection between the elastic yarn 3 and the connecting shaft 2; or the position limiting fulcrum 4 is a protrusion provided inside the connecting shaft 2, and the elastic yarn 3 and the connecting shaft 2 are fixedly connected by the protrusion; or other methods that can connect the elastic yarn 3 and the connecting shaft 2 at a certain point can be used, and are not limited thereto herein.
[0020] The purpose of providing the above-mentioned position limiting fulcrum 4 is mainly to fixedly connect the connecting shaft 2 and the elastic thread 3 at a certain point, so that when the elastic thread 3 is in a tensioned state, the connecting shaft 2 at each position moves together with the elastic thread 3, and each ball 1 moves synchronously. As a result, whether it is a circular ball chain or a linear ball chain, when it is tensioned, the distance between two adjacent balls 1 is equal, and the distribution of the balls 1 in the ball chain is uniform, making it easy to use the ball chain as a connecting string and achieving an aesthetic effect.
[0021] The connecting part 5 is a convex ring integrally connected to the end of the connecting shaft 2. The convex ring has an outer diameter larger than the diameter of the notch in the ball 1, and serves the purpose of preventing the ball 1 from falling off the connecting shaft 2, as well as providing overload protection.
[0022] The above are only preferred embodiments of the present invention, and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention. [Explanation of symbols]
[0023] 1 Ball 2 Connecting shaft 3 Elastic thread 4 Position limiting support point 5 Connecting part
Claims
1. The ball-connecting device includes a plurality of balls (1) and a plurality of hollow connecting shafts (2) connecting the balls (1), each of two adjacent connecting shafts (2) has opposing ends disposed inside the ball (1) and has connecting portions (5) at both ends for preventing the ball (1) from falling off the connecting shaft (2), an elastic thread (3) is provided to pass through the hollow portions of the connecting shafts (2), and a position limiting fulcrum (4) is provided on the connecting shaft (2) for fixing the elastic thread (3). A ball chain characterized in that the position limiting fulcrum (4) is located at the middle position of the connecting shaft (2).
2. The ball chain of claim 1, characterized in that the position limiting fulcrum (4) is an indentation provided on the connecting shaft (2) and extending toward the center of the connecting shaft (2), and the elastic thread (3) is fixedly connected to the connecting shaft (2) by the inside of the indentation coming into contact with the elastic thread (3).
3. The ball chain described in claim 1, characterized in that the position limiting fulcrum (4) is a groove provided on the connecting shaft (2) and recessed toward the center of the connecting shaft (2), and the groove comes into contact with the elastic thread (3) to realize a fixed connection between the elastic thread (3) and the connecting shaft (2).
4. The ball chain of claim 1, characterized in that the connecting portion (5) is a convex ring integrally connected to the end of the connecting shaft (2), and the convex ring has an outer diameter larger than the diameter of the notch of the ball (1).