Anti-disengagement binding coil

Abstract

The utility model discloses an anti-disengagement binding coil, which relates to the field of binding coils, and has the technical scheme that the anti-disengagement binding coil comprises a spiral body, the body comprises a plurality of spiral coils, two adjacent spiral coils are provided with flexible metal sections, and the two flexible metal sections can be bent towards each other. When people screw the body into a book page, the flexible metal sections can be screwed into the book page along with the body, after each spiral coil of the body is screwed into the book page, people change the shapes of the two flexible metal sections with fingers, so that the flexible metal sections at the two ends are bent towards each other, and the distance between the two spiral coils is reduced; therefore, rotation of the body can be limited, the binding coil is not prone to being separated from the book pages in the normal use process, PVC plastic has good chemical stability, and the service life and the strength of the whole body are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of binding coil, more specifically, it relates to a kind of anti-extrusion binding coil. BACKGROUND

[0002] Binding coil is spiral long coil made of plastic or metal, and the pages to be bound are punched in sequence during operation, and then inserted into the prefabricated binding coil.The biggest advantage of coil binding is that the text can be easily added or removed.

[0003] The existing technology is to rotate the binding coil to make the binding coil pass through each hole in the pages, but the two ends of the binding coil are not structurally limited, so that when the binding coil is accidentally rotated, part of the coil will be extruded out of the pages.

[0004] Therefore, a new solution is needed to solve this problem. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model aims to provide an anti-extrusion binding coil.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: an anti-extrusion binding coil, comprising a spiral body, the body comprises a plurality of spiral coils, and a flexible metal segment is arranged on each of two adjacent spiral coils, and the two flexible metal segments can be bent towards each other.

[0007] The utility model is further provided with: a notch is arranged on the spiral coil, the notch divides the spiral coil into two spiral segments, and the two ends of the flexible metal segment are connected to the two spiral segments respectively.

[0008] The utility model is further provided with: a shape-retaining sleeve is arranged outside the flexible metal segment, the two ends of the shape-retaining sleeve are sleeved on the two spiral segments respectively, and the shape-retaining sleeve can slide along the spiral coil.

[0009] The utility model is further provided with: the length of the flexible metal segment is greater than 1 / 4 of the length of the spiral coil and less than 1 / 3 of the length of the spiral coil.

[0010] The utility model is further provided with: the body comprises an inner metal wire and a rigid sheath, the rigid sheath is wrapped outside the inner metal wire, and the flexible metal segment is located on the inner metal wire.

[0011] The utility model is further provided with: the rigid sheath is made of PVC plastic.

[0012] In summary, the utility model has the following advantages:

[0013] The flexible metal segments will be screwed into the book page along with the body, after each spiral coil of the body is screwed into the book page, the user changes the shape of the two flexible metal segments by fingers, so that the two flexible metal segments are folded towards each other, so that the spacing between the two spiral coils is reduced, so as to limit the rotation of the body, so that the binding coil is not easy to be taken out of the book page in the process of usual use. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Structure diagram of the utility model Figure One ;

[0015] Figure 2 Structure diagram of the utility model Figure Two .

[0016] In the figure: 1, the body; 2, flexible metal segment; 3, shape-retaining sleeve. DETAILED DESCRIPTION

[0017] The utility model will be described in detail in combination with the drawings and examples.

[0018] The anti-taking-out binding coil, as shown in Figure 1 and Figure 2 , comprises a spiral body 1, the body 1 comprises a plurality of spiral coils, and flexible metal segments 2 are arranged on two adjacent spiral coils, the two flexible metal segments 2 can be folded towards each other, when the body 1 has not been screwed into the book page, the flexible metal segments 2 are also in spiral shape, in the process of screwing the body 1 into the book page, the flexible metal segments 2 will be screwed into the book page along with the body 1, after each spiral coil of the body 1 is screwed into the book page, the user changes the shape of the two flexible metal segments 2 by fingers, so that the two flexible metal segments 2 are folded towards each other, so that the spacing between the two spiral coils is reduced, so as to limit the rotation of the body 1, so that the binding coil is not easy to be taken out of the book page in the process of usual use.

[0019] As shown in Figure 1 and Figure 2As shown, the spiral coil is provided with a notch, the notch divides the spiral coil into two spiral sections, the two ends of the flexible metal section 2 are connected with the two spiral sections respectively, the flexible metal section 2 is completely exposed on the body 1, which is convenient for people to apply force to the flexible metal section 2, so that the flexible metal section 2 can be deformed, the flexible metal section 2 is externally provided with a shape retaining sleeve 3, the two ends of the shape retaining sleeve 3 are sleeved on the two spiral sections respectively, the shape retaining sleeve 3 can slide along the spiral coil, in the process of rotating the body 1 into the page, the shape retaining sleeve 3 is sleeved outside the flexible metal section 2, and the two ends of the shape retaining sleeve 3 are supported by the two spiral sections respectively, so that the flexible metal section 2 is not easy to deform in the process of rotating the body 1 into the page, thereby ensuring the smoothness of the body 1 into the page, after the body 1 is rotated into the page, people can expose the flexible metal section 2 by sliding the shape retaining sleeve 3, so as to bend it, the length of the flexible metal section 2 is greater than 1 / 4 of the length of the spiral coil and less than 1 / 3 of the length of the spiral coil, in the embodiment, the length of the flexible metal section 2 is 1 / 3 of the length of the spiral coil, so that there is still a relatively long length of the spiral coil for page turning, and the length of the flexible metal section 2 is not too short.

[0020] As shown in Figure 1 and Figure 2 As shown, the body 1 comprises an inner wire and a rigid sheath, the rigid sheath is covered outside the inner wire, the flexible metal section 2 is located on the inner wire, the inner wire belongs to a flexible wire, and the rigid sheath is not easy to deform, the rigid sheath can keep the shape of the wire, so that the whole body 1 is spiral, the inner wire is exposed by cutting part of the rigid sheath to form the flexible metal section 2, the rigid sheath is made of PVC plastic, the PVC plastic has good chemical stability, which ensures the service life and strength of the whole body 1.

[0021] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application are also considered as the protection scope of the present application.

Claims

1. A thread guard binding loop comprising a helical body (1) comprising a number of helical turns, characterized in that: Two adjacent spiral coils are provided with flexible metal segments (2), and the two flexible metal segments (2) can be folded towards each other.

2. The anti -slip binding coil according to claim 1, wherein: The spiral coil is provided with a notch, the notch divides the spiral coil into two spiral sub-coils, and the two ends of the flexible metal segment (2) are connected with the two spiral sub-coils respectively.

3. The anti -slippage binding coil according to claim 2, wherein: The flexible metal segment (2) is externally provided with a shape-retaining sleeve (3), the two ends of the shape-retaining sleeve (3) are sleeved on the two spiral sub-coils respectively, and the shape-retaining sleeve (3) can slide along the spiral coil.

4. The anti -slippage binding coil according to claim 2, wherein: The length of the flexible metal segment (2) is greater than 1 / 4 of the length of the spiral coil and less than 1 / 3 of the length of the spiral coil.

5. The anti -slippage binding coil of claim 2, wherein: The body (1) comprises an inner wire and a rigid sheath, the rigid sheath is wrapped outside the inner wire, and the flexible metal segment (2) is located on the inner wire.

6. The anti -slippage binding coil according to claim 5, wherein: The rigid sheath is made of PVC plastic.

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