Magnetic attraction connecting device for toy

Abstract

A magnetic attraction connecting device used on a toy comprises an outer cylindrical part, an inner cylindrical part arranged in the outer cylindrical part in a sleeved mode and a magnet, a hollow cavity of the inner cylindrical part is a magnet containing cavity, the size of the magnet containing cavity is larger than the size of the magnet in any direction, and the magnet can be overturned freely in the magnet containing cavity. A shaft shoulder is arranged at the position, close to the front end, of a middle hole of the outer cylindrical part, inner face teeth are machined on the rear end face of the shaft shoulder, outer face teeth meshed with the inner face teeth are machined on the front end face of the inner cylindrical part, the tooth faces of the inner face teeth and the outer face teeth are inclined faces, and a plurality of limiting adjusting teeth are integrally arranged on the end face, in the outer face teeth, of the inner cylindrical part. A radial section with the minimum diameter smaller than the diameter of the end of the magnet is arranged behind the front end face of the limiting adjusting tooth, the radial section refers to the section in the radial direction of the inner barrel-shaped piece, and when the two magnets in the two inner barrel-shaped pieces are attracted, a gap is formed between the two magnets. According to the magnetic attraction device, the two elements are separated or the angle is easy to adjust.

Description

TECHNICAL FIELD

[0001] The utility model relates to a toy, especially relates to a magnetic attraction connecting device for toy, belongs to the technical field of toys. BACKGROUND

[0002] In the spliced toy, the model formed by the splicing mode of the connecting structure is more stable, and the connecting element shape and structure are more abundant, the common connecting structure generally adopts hole stick insertion and mortise and tenon connection form, the above form needs to process the connecting structure on the connecting piece, and the different elements need to be connected by a third element such as a stick in many cases, and the structure formed by simple insertion is easy to be damaged, and often needs to increase the locking structure, which leads to the complication of the connecting structure, and the connecting angle is inconvenient to adjust, CN103813839B provides a sawtooth structural piece and a toy block with the structural piece, the sawtooth structural piece is adopted, the principle that the same sex of magnet on two elements is attracted and the opposite sex is repelled is used to realize the attraction and connection between the two elements, and the angle can be adjusted, but the sawtooth structural piece has the following problems: first, the structure of the sawtooth structural piece is relatively complex and is not easy to process; second, when the two magnets of the two elements are attracted together, because such toys are mainly used for the intelligence development of children, the pulling force and the torsion of the hands of children are limited, and it is more laborious to adjust the angle or separate the two magnet-attracted elements. SUMMARY

[0003] The utility model aims at overcoming the above problems existing in the current toy spliced by magnet attraction connection, and provides a magnetic attraction connecting device for toy.

[0004] In order to realize the purpose of the utility model, the following technical scheme is adopted: a magnetic attraction connecting device for toy, which comprises an external cylindrical piece, an internal cylindrical piece sleeved in the external cylindrical piece and a magnet, the hollow cavity of the internal cylindrical piece is a magnet receiving cavity, the size of the magnet receiving cavity is greater than the size of the magnet in any direction, the magnet can be flipped arbitrarily in the magnet receiving cavity, characterized in that: the middle hole of the external cylindrical piece has a shaft shoulder near the front end, the rear end face of the shaft shoulder is processed with internal teeth, the front end face of the internal cylindrical piece is processed with external teeth meshing with the internal teeth, the tooth surfaces of the internal teeth and the external teeth are both inclined surfaces, when the external teeth can jump along the teeth of the internal teeth under the condition that the external cylindrical piece is fixed and the internal cylindrical piece is subjected to tangential torsion, a plurality of limiting adjustment teeth are integrally arranged on the end face of the internal cylindrical piece where the external teeth are located, and the limiting adjustment teeth on one internal cylindrical piece can be inserted between the adjacent limiting adjustment teeth on another internal cylindrical piece when the limiting adjustment teeth of the two internal cylindrical pieces are relatively staggered; the radial section with the smallest diameter being less than the end diameter of the magnet is arranged behind the front end face of the limiting adjustment teeth, and the radial section refers to the section along the radial direction of the internal cylindrical piece.

[0005] Further, inward protrusions are integrally arranged on the inner surfaces of the at least two limiting and adjusting teeth, the protrusions are smoothly connected with the inner surfaces of the limiting and adjusting teeth behind the protrusions, the minimum diameter of the cross section of the protrusions is smaller than the minimum diameter of the magnets, and the two magnets have a gap therebetween when the two magnets are attracted to each other.

[0006] Further, inward protrusions are integrally arranged on the inner surfaces of all the limiting and adjusting teeth.

[0007] Further, a plurality of conical bodies are fixedly arranged on the outer surface of the outer cylinder near the rear end, the rear end of the conical body is small and the front end is large, and the rear end is pointed.

[0008] The positive and beneficial technical effects of the present application are that the sampling and magnetically attracting connecting device is arranged on the toy element, the two magnets have a gap therebetween after being attracted, and it is easier to separate the two elements or adjust the angle, which is specifically and in detail described in combination with the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a schematic view of the present application.

[0010] Figure 2 is a schematic view of the present application.

[0011] Figure 3 is Figure 2 is a schematic view of the present application. DETAILED DESCRIPTION

[0012] In order to more fully explain the embodiments of the present application, the embodiments of the present application are provided. These embodiments are only used to illustrate the present application and do not limit the scope of the present application.

[0013] The present application is further explained in detail in combination with the drawings, and the marks in the drawings are as follows: 1: outer cylindrical member; 2: inner cylindrical member; 3: cylindrical magnet; 4: limiting and adjusting tooth; 5: protrusion; 6: conical body; 7: shaft shoulder; 8: inner tooth; 9: outer tooth.

[0014] As shown in the drawings, a magnetic attraction connecting device for toys comprises an outer cylinder 1, an inner cylinder 2 sleeved in the outer cylinder, and a magnet 3. In this embodiment, the magnet is a cylindrical magnet with N and S poles. The hollow cavity of the inner cylinder is a magnet receiving cavity, which is larger than the magnet in any direction. The cylindrical magnet can be flipped in the magnet receiving cavity. The outer cylinder has a shaft shoulder 7 near the front end of the middle hole. The rear end surface of the shaft shoulder is machined with an inner tooth 8. The front end surface of the inner cylinder is machined with an outer tooth 9 that engages with the inner tooth. The tooth surfaces of the inner tooth and the outer tooth are both inclined surfaces. When the inner tooth engages with the outer tooth, the outer tooth can jump along the teeth of the inner tooth when the inner cylinder is subjected to tangential torque under the condition that the outer cylinder is fixed. The inner cylinder end surface in the outer tooth is integrally provided with a plurality of limiting adjustment teeth 4. The limiting adjustment teeth have a certain length in the axial direction of the inner cylinder. When the limiting adjustment teeth of the two inner cylinders are relatively staggered, the limiting adjustment teeth on one cylinder can be inserted between the adjacent limiting teeth of the other cylinder. The limiting teeth have a radial section with a minimum diameter smaller than the end surface diameter of the magnet behind the front end surface.

[0015] The diameters of the two ends of a general magnet are equal. If the diameters of the two ends of the magnet are not equal, the radial section behind the front end surface of the limiting teeth has a minimum diameter smaller than the minimum end surface diameter of the magnet. The radial section refers to the radial section of the inner cylinder. When the two magnets in the two inner cylinders are attracted, there is a gap between the two magnets. Six limiting adjustment teeth are used in the drawings. In the utility model, the magnet is not limited to a cylindrical magnet. A round drum magnet or a multi-prism magnet can also achieve the technical solution of the utility model.

[0016] As an embodiment, the radial section behind the front end surface of the limiting teeth has a minimum diameter smaller than the minimum diameter of the cylindrical magnet. The diameter of the circle formed by the six limiting teeth is smaller than the minimum diameter of the cylindrical magnet (because some cylindrical magnets have a chamfer at the end, so the minimum diameter is used). In this way, when the two cylindrical magnets are attracted, they will be pushed to the rear of the front end of the limiting teeth, and there will be a gap between the two magnets. This situation is easy to understand. In the Figure 1 embodiment, the protrusion is removed, which is the schematic diagram of this embodiment.

[0017] As another embodiment, an inward protrusion 5 is integrally provided on the inner surface of all limiting adjustment teeth. The protrusion smoothly transitions with the inner surface of the limiting adjustment teeth behind it. The minimum diameter of the cross section at the protrusion is smaller than the minimum diameter of the magnet. In this way, when the two magnets are attracted, the front end of the magnet is pushed onto the protrusion, and there is a gap between the two magnets.

[0018] As an optimized way, a plurality of conical bodies 6 are fixedly arranged on the surface of the outer cylinder near the rear end, the rear end of the conical body is small, the front end is large, and the rear end is pointed. The design of the conical body is to insert the device into the hole of the wooden element, the front end of the conical body can be radially extended into the hole wall to form a barb structure, and the reliability of installation is ensured.

[0019] After the magnetic attraction device is installed on two toy elements, when the magnets on different connecting elements (elements) are close, the limiting adjustment teeth on one element are inserted between the limiting adjustment teeth on the other element, due to the repulsion of the same sex and the attraction of the different sex, the magnets are automatically rotated to two different poles and can be attracted. After attraction, the outer teeth are forced to fit on the inner teeth, due to the attraction of the magnet, the angle between the two elements can be relatively positioned, when the angle needs to be adjusted, the two elements are relatively rotated, the limiting teeth on the element are driven by the circumferential (tangential) torsion to make the outer teeth jump between the inner teeth, realize the angle adjustment, after the adjustment is completed, the magnetic attraction in the adjustment process is similar to the elastic force of the spring, the outer teeth and the inner teeth are relatively engaged together to relatively position the angle of the two elements (connecting elements), and the stability is good.

[0020] After the embodiments of the utility model are described in detail, persons skilled in the art can clearly understand that various changes and modifications can be made without departing from the above patent application range and spirit, any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiments all belong to the range of the technical scheme of the utility model, and the utility model is also not limited to the implementation modes of the examples in the specification.

Claims

1. A magnetic connection device for toys, comprising an outer cylindrical component, an inner cylindrical component fitted inside the outer cylindrical component, and a magnet, wherein the hollow cavity of the inner cylindrical component serves as a magnet receiving cavity, the size of the magnet receiving cavity being larger than the size of the magnet in any direction, and the magnet can be arbitrarily rotated within the magnet receiving cavity, characterized in that: The outer cylindrical component has a shoulder near the front end of its central hole. The rear end face of the shoulder is machined with internal teeth. The front end face of the inner cylindrical component is machined with external teeth that mesh with the internal teeth. Both the internal and external teeth have beveled surfaces. When the internal and external teeth mesh, and the outer cylindrical component is fixed, the external teeth can jump sequentially along the teeth of the internal teeth when the inner cylindrical component is subjected to tangential torque. Multiple limiting adjustment teeth are integrally provided on the end face of the inner cylindrical component where the external teeth are located. After the limiting adjustment teeth of two inner cylindrical components are staggered, the limiting adjustment teeth on one inner cylindrical component can be inserted between adjacent limiting adjustment teeth on the other inner cylindrical component. Behind the front end face of the limiting adjustment teeth, there is a radial section with a minimum diameter smaller than the diameter of the magnet end. The radial section refers to the section along the radial direction of the inner cylindrical component.

2. The magnetic connection device for toys according to claim 1, characterized in that: An inward protrusion is integrally provided on the inner surface of at least two limiting adjustment teeth. The protrusions and the inner surfaces of the limiting adjustment teeth behind them are smoothly transitioned. The minimum diameter of the cross section at the protrusion is smaller than the minimum diameter of the magnet. When the two magnets in the two inner cylindrical parts are attracted together, there is a gap between the two magnets.

3. A magnetic connection device for toys according to claim 2, characterized in that: An inward protrusion is integrally formed on the inner surface of all the limit adjustment teeth.

4. A magnetic connection device for toys according to claim 1, characterized in that: Multiple cones are fixedly installed on the surface of the outer cylinder near the rear end. The cones are small at the rear end and large at the front end, with the rear end being pointed.

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