Easily-torn lamplight control double-doubling line and production mold

Abstract

The utility model discloses an easy-to-tear light control double-parallel wire and a production mould, the easy-to-tear light control double-parallel wire comprises two groups of conductors arranged symmetrically and an insulating layer wrapping the conductors, the cross section of the double-parallel wire is in the shape of an oblate with a plurality of notches at the center, a connecting part is formed at the joint of the notches, the notches are arranged along the axial direction of the insulating layer, and the insulating layer is arranged in the middle of the double-parallel wire. And the conductor is arranged on one side far away from the connecting part. The tearing force of the easy-to-tear light control double-parallel wire with the same conductor specification is smaller than that of a traditional round double-parallel wire by 35%, and the easy-to-tear light control double-parallel wire is easier to tear. After the easy-to-tear light control double parallel wire is used, the condition that the copper wire is exposed due to breakage of the insulating layer does not occur any more, and the concentricity of the torn insulating layer can be kept above 90%.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric wire and cable, and relates to double parallel wire and production mould, especially easy to tear light control double parallel wire and production mould. BACKGROUND

[0002] Double parallel wire is a kind of unshielded cable that two mutually parallel conductors are combined together after being wrapped with insulation, and is usually used in general electronic, electric equipment power connection, household appliance, small electric tool, instrument and power lighting.At present, double parallel wire is widely used in outdoor light control system, and needs to be separated from the middle in the process of use.Most of the existing double parallel wire is 8-shaped structure (as shown in the figure) composed of two circular insulations, and the structure is not uniform in stress and deformation in the process of tearing due to the toughness of the insulation material, and is prone to insulation rupture, causing the phenomenon that one side of the insulation skin is too thin and the other side is too thick, and sometimes even copper wire is exposed, which produces great safety risk. Figure 2 UTILITY MODEL CONTENT

[0003] In order to solve the problem that the existing double parallel wire is not uniform in stress and deformation in the process of tearing due to the toughness of the insulation material, and is prone to insulation rupture, causing the phenomenon that one side of the insulation skin is too thin and the other side is too thick, and sometimes even copper wire is exposed, which produces great safety risk, the utility model provides a kind of easy-to-tear light control double parallel wire, which changes the cross-sectional shape of the cable without changing the overall size of the cable, changes the circular insulation shape into a relatively flat structure, and the tearing force used in the tearing of the easy-to-tear light control double parallel wire with the same conductor specification is 35% less than that of the traditional circular double parallel wire, which is easier to tear.

[0004] Another object of the utility model is to provide a mould for producing the easy-to-tear light control double parallel wire.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] The utility model provides a kind of easy-to-tear light control double parallel wire, including two groups of symmetry setting conductors and the insulation layer of wrapping conductor, the cross-sectional shape of the double parallel wire is flat circle with a plurality of notches in the center, the connecting portion is formed at the connecting place of the notch, the notch is arranged along the axial direction of the insulation layer, and the conductor is arranged on the side away from the connecting portion.

[0007] ​The utility model discloses in the utility model, the utility model improves the cross section of double parallel cable from circle to oblate circle without changing the overall size of the existing double parallel cable.

[0008] As a preferred scheme of the utility model, the notch is a V-shaped groove.

[0009] As a preferred scheme of the utility model, the angle of the notch is 25°-35°.

[0010] As a preferred scheme of the utility model, the angle of the notch is 30°.

[0011] As a preferred scheme of the utility model, the length of the connecting part is same as the double parallel cable of 8-shaped structure.

[0012] In the utility model, the tensile strength of material is mainly influenced by the nature, crystal structure, grain size and chemical composition of material, so when the horizontal tensile force is borne, the maximum tensile force that can be borne is mainly determined by the length of the connecting part, and the length of the connecting part of the utility model is same as the length of the connecting part of the existing 8-shaped double parallel cable, so that the maximum tensile force that can be borne is same.

[0013] As a preferred scheme of the utility model, the distance from the edge of the conductor close to the notch side to the notch is greater than the distance from the edge of the conductor away from the notch side to the insulating layer.

[0014] In the utility model, the distance between the same conductor and the notch is greater than the distance between the same conductor and the insulating layer, so that the rupture is less likely to occur when the double parallel cable is torn, and the insulating layer can have sufficient insulating thickness after being torn.

[0015] As a preferred scheme of the utility model, the maximum length of the cross section of the double parallel cable is same as the maximum length of the cross section of the double parallel cable of 8-shaped structure.

[0016] The utility model discloses still provide a kind of for easy tearing light control double parallel cable production mould, the mould includes base, the cavity for double parallel cable passing is equipped in the base, the mould sleeve mouth for cutting double parallel cable is equipped in the top of the base, the shape of the mould sleeve mouth is oblate, the mould sleeve mouth middle part is equipped with symmetrical convex part, the shape of the convex part is matched with the notch.

[0017] Compared with prior art, the utility model has the following beneficial effects:

[0018] 1) the easy tearing light control double parallel cable of same conductor specification provided in the utility model uses tearing force when tearing, and the tearing force of traditional circular double parallel cable is 35%, and it is easier to tear.

[0019] 2) The easy-to-tear light control double parallel line provided by the utility model will not have the situation of copper wire exposed due to insulation layer rupture after being torn, and the concentricity of the insulation layer after being torn can be kept above 90%.

[0020] 3) The utility model provides light control double parallel line in V-shaped groove shape, which is used to replace traditional light control double parallel line.

[0021] 4) The utility model also provides a mold for producing the easy-to-tear light control double parallel line. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0023] Figure 1 is a schematic view of the utility model.

[0024] Figure 2 is a schematic view of the existing 8-shaped double parallel line.

[0025] Figure 3 is a schematic view of the production mold.

[0026] In the drawings, 1. conductor; 2. insulation layer; 3. notch; 4. connecting part; 5. base; 6. protruding part. DETAILED DESCRIPTION

[0027] In order to further understand the content of the utility model, the utility model will be described in detail in combination with the drawings and embodiments.

[0028] The application will be further described below in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description. The first, second and the like in the utility model are set for the convenience of describing the technical scheme of the utility model, and have no specific limiting effect, and all refer to the general, which does not limit the technical scheme of the utility model. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form new technical solutions without contradiction or conflict, which are within the scope of protection of the utility model.

[0029] Referring to Figure 1 The utility model provides easy tear light control double parallel line, including two groups of symmetry setting conductor 1 and the insulating layer 2 of wrapping conductor 1, the cross section shape of double parallel line is the flat round type with a plurality of notches 3 in the center, the connecting portion 4 is formed at the connecting place of notch 3, the notch 3 is axially arranged along the insulating layer 2, the conductor 1 is arranged on the side away from the connecting portion 4.

[0030] The utility model improves the cross section of double parallel line from round to flat round without changing the overall size of the existing double parallel line cable. The insulating layer of the double parallel line is provided with a V-shaped groove notch. When a shear force perpendicular to the cross section is applied to both sides of the insulating layer, the notch with a 30° angle will have a component perpendicular to the angle when stressed, thereby increasing the shear stress on the material and making it easier to separate the insulating layers on both sides.

[0031] Embodiment 1

[0032] With reference to Figure 1 The utility model discloses an easy-to-tear light control double parallel line, including the symmetry of two groups of conductor 1 with the insulating layer 2 of wrapping conductor 1, the cross section shape of double parallel line is the flat round type with a plurality of notches 3 in the center, the connection of notches 3 forms the connecting portion 4, the notches 3 are axially arranged along the insulating layer 2, the conductor 1 is arranged on the side away from the connecting portion 4.

[0033] The notch 3 is V-shaped slot, and the angle of the notch 3 is 30°.

[0034] Figure 1 In the formula, L2 is the maximum distance of the double parallel line, L3 is the length of the connecting portion 4, L6 is the distance from the edge of the conductor 1 to the notch 3, and Φ2 is the diameter of the conductor.

[0035] With reference to Figure 1 In the formula, L1 is the maximum distance of the double parallel line, L4 is the length of the connecting portion 4, L5 is the distance from the edge of the conductor to the notch, and Φ1 is the diameter of the conductor.

[0036] The size of the utility model is consistent with the size of the existing 8-shaped double parallel line, that is, L1=L2, Φ1=Φ2, and L3=L4, so that the maximum tensile force that can be borne by the double parallel line of the utility model is the same as the tensile force that can be borne by the existing 8-shaped double parallel line.

[0037] The insulating layer of the double parallel line is provided with symmetrical V-shaped groove notches, when a shear force perpendicular to the cross section is applied to both sides of the insulating layer, the shear strength of the material is related to factors such as the hardness of the material, the size and shape of the sample, and the test conditions, the notch with a 30° included angle will have a component perpendicular to the included angle when stressed, thereby increasing the shear stress on the material, and making the insulating layers on both sides more easily separated.

[0038] In the utility model, L6>L5, so that the cable is more difficult to break when being torn, and the insulating layer after being torn can also have sufficient insulating thickness.

[0039] In production, the utility model improves the production mold, and designs the mold sleeve opening of the insulating extrusion outer mold into a flat shape, and the middle part is provided with two wedge-shaped protruding portions 6, the mold includes a base 5, the inside of the base 5 is provided with a cavity for the double parallel line to pass through, the top of the base 5 is provided with a mold sleeve opening for cutting the double parallel line, the shape of the mold sleeve opening is flat round, the middle part of the mold sleeve opening is provided with symmetrical protruding portions 6, and the shape of the protruding portions 6 is matched with the shape of the notches 3.

[0040] The mold provided by the utility model can determine the shape of the cable during insulation extrusion, the die sleeve opening is made of hard alloy, the protruding part of the wedge shape has sufficient strength, does not deform during the production process, and has a longer service life.

[0041] The above description of the utility model and its embodiments is illustrative and non-restrictive, and the embodiments shown in the drawings are only one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are designed without creativity, which should all belong to the protection scope of the utility model.

Claims

1. A tearable light control bicomponent yarn comprising two sets of conductors symmetrically arranged and an insulating layer surrounding the conductors, characterized in that, The cross-sectional shape of the double parallel wire is flat round type with several notches in the center, the connection part is formed at the connection of the notches, the notches are arranged axially along the insulation layer, and the conductor is arranged on the side away from the connection part.

2. A tearable light control bicomponent yarn according to claim 1, wherein, The notch is V-shaped slot.

3. A tearable light control bicomponent yarn according to claim 2, wherein, The angle of the notch is 25°-35°.

4. A tearable light control bicomponent yarn according to claim 3, wherein, The angle of the notch is 30°.

5. A tearable light control bicomponent yarn according to claim 1, wherein, The length of the connection part is the same as that of the double parallel wire of 8-shaped structure.

6. A tearable light control bicomponent yarn according to claim 1, wherein, The distance from the edge of the conductor near the notch side to the notch is greater than the distance from the edge of the conductor away from the notch side to the insulation layer.

7. A tearable light control bicomponent yarn according to any one of claims 1 to 6, wherein The maximum length of the cross-section of the double parallel wire is the same as that of the double parallel wire of 8-shaped structure.

8. A die for producing the easy tear light control double plying according to any one of claims 1 to 7, characterized in that, The mold comprises a base, a cavity for the double parallel wire to pass through is arranged inside the base, a mold sleeve opening for cutting the double parallel wire is arranged on the top of the base, the shape of the mold sleeve opening is flat round, symmetric protrusions are arranged in the middle of the mold sleeve opening, and the shape of the protrusions is matched with the notch.

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