Automobile fuse shell

Abstract

The utility model relates to an automobile fuse housing which is formed by butt joint of two housing bodies. The two shells are rotationally and symmetrically arranged relative to the fuse link, and the middle part of the butt joint surface of each shell comprises a concave cavity; a plurality of flame-retardant strips which are arranged at intervals are arranged in the cavity; l-shaped bosses are respectively arranged at one pair of opposite angles of the butt joint surface of each shell, so that the other pair of opposite angles form a concave part; the L-shaped boss can be clamped in the concave part; a pair of opposite angles of the butt joint surface of each shell are respectively provided with a butt joint boss, and the other pair of opposite angles of the butt joint surface of each shell are respectively provided with a butt joint groove matched with the butt joint boss; the pair of butt-joint bosses and the pair of L-shaped bosses are arranged in a staggered mode, and the butt-joint bosses are located on the inner sides of the limiting flanges. According to the utility model, the plurality of flame-retardant strips arranged at intervals are arranged in the cavity, so that the breaking capacity of the fuse can be effectively improved, and compared with the prior art, fillers are saved, the assembly is convenient, and the production cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fuse, especially an automobile fuse shell. BACKGROUND

[0002] The fuse is also called as the fuse, and its main function is overload protection. When the fuse is correctly arranged in the circuit, the fuse will be fused to cut off the current when the current abnormally rises to a certain height and heat, thereby protecting the safe operation of the circuit. When the circuit fails or abnormally, the current continuously rises, and the rising current can damage some important devices in the circuit or even cause fire. If the fuse is correctly arranged in the circuit, the fuse will be fused to cut off the current when the current abnormally rises to a certain height and heat, thereby protecting the safe operation of the circuit.

[0003] The automobile low-voltage flat fuse is a common fuse on the automobile. Although the prior art 201921673591.3 discloses a new type of flat fuse for automobile micro-mixing system, the short-circuit current breaking capacity of the fuse is improved by arranging the upper rubber block between the upper shell and the integrated terminal and arranging the lower rubber block between the integrated terminal and the lower shell, but the assembly is complicated, the production efficiency is reduced, and the production cost is increased due to the need for additional filling of the upper rubber block and the lower rubber block. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects of the prior art and provides an automobile fuse shell.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of an automobile fuse shell comprising two shell bodies butted together, the two shell bodies are placed in rotational symmetry with the fuse link, the butt joint surface of each shell body comprises a concave chamber in the middle, and a plurality of spaced flame-retardant strips are arranged in the chamber.

[0006] Preferably, one pair of opposite angles of the butt joint surface of each shell body is provided with an L-shaped boss, and the other pair of opposite angles forms a recess; the L-shaped boss can be clamped in the recess.

[0007] Preferably, a protruding limiting stop edge is arranged on the inner side of the recess of the butt joint surface of the shell body, and the L-shaped boss is positioned by the limiting stop edge.

[0008] Preferably, one pair of opposite angles of the butt joint surface of each shell body is further provided with a butt joint boss, and the other pair of opposite angles is provided with a butt joint groove matched with the butt joint boss; one pair of butt joint bosses and one pair of L-shaped bosses are placed alternately, and the butt joint boss is located on the inner side of the limiting stop edge; the height of the butt joint boss is higher than that of the L-shaped boss.

[0009] Preferably, one pair of diagonals of each of the abutment surfaces of the shell is respectively provided with a limiting post, and the other pair of diagonals is respectively provided with an abutment hole matched with the limiting post; the limiting post is located at the inner side of the abutment boss or the abutment groove.

[0010] Preferably, each of the shells is integrally injection molded to directly form the chamber, the fire-retardant strip, the L-shaped boss, the limiting flange, the limiting post, the abutment hole, the abutment boss and the abutment groove.

[0011] Preferably, each of the shells is integrally injection molded to directly form the chamber, the fire-retardant strip, the L-shaped boss, the limiting flange, the limiting post, the abutment hole, the abutment boss and the abutment groove.

[0012] Thanks to the above technical scheme, the present application has the following advantages over the prior art:

[0013] 1. The present application sets multiple fire-retardant strips in the chamber to effectively improve the breaking capacity of the fuse, and compared with the prior art, the present application does not need to fill the product, which is convenient for assembly and saves production cost.

[0014] 2. The present application sets the L-shaped boss, the recess and the limiting flange to position the length direction and the width direction of the two shells, which is convenient for abutment.

[0015] 3. The present application sets the abutment boss and the abutment groove to further position the two shells, which is more convenient for abutment.

[0016] 4. The present application sets the limiting post and the abutment hole, and in the process of abutment, one pair of limiting posts can respectively pass through the fixing holes on the fuse link and extend into the abutment hole, so that the position of the fuse link and the shell is relatively fixed.

[0017] 5. The present application sets the arc-shaped notch at both ends of the shell to effectively increase the installation distance, which is convenient for installation. BRIEF DESCRIPTION OF DRAWINGS

[0018] The technical scheme of the present application will be further described below with reference to the drawings:

[0019] ATTACHED Fig. 1 It is a side view of the automobile fuse shell of the present application.

[0020] ATTACHED Fig. 2 It is an exploded view of the automobile fuse shell of the present application.

[0021] ATTACHED Fig. 3 It is an internal plan view of a single shell in the present application.

[0022] Wherein: 1, shell; 2, chamber; 3, fire-retardant bar; 4, L-shaped boss; 5, recess; 6, limiting stop; 7, butt boss; 8, butt groove; 9, limiting column; 10, butt hole; 11, arc-shaped notch. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail in connection with the drawings and specific embodiments.

[0024] ATTACH Figs. 1-3 The automobile fuse housing provided by the utility model comprises two shells 1 that are butted; the two shells 1 are placed in rotational symmetry with respect to a fuse link; a recessed chamber 2 is formed in the middle of the butt surface of each shell 1; a plurality of fire-retardant bars 3 are arranged in the chamber 2 at intervals;

[0025] When installed, the two shells 1 are butted to form the housing, which covers the fuse portion in the middle of the fuse link, thereby protecting the fuse portion from being damaged under normal circumstances; the chambers 2 of the two shells 1 are in communication with each other to form a melting cavity, and the fuse portion is located in the melting cavity; since the plurality of fire-retardant bars 3 are arranged in the chamber 2 at intervals, the breaking capacity of the fuse can be effectively improved.

[0026] In addition, in order to enable the two shells 1 to be butted to form a sealed chamber 2, the housing and the melting link are fixedly connected by ultrasonic welding, so that the housing and the melting link are fixedly connected, and a sealed melting cavity can also be formed in the housing; it should be noted that the utility model is not limited to fixing the housing and the melting link by ultrasonic welding, and in other embodiments, the housing and the melting link can also be fixedly installed by means of gluing, clamping or riveting.

[0027] Further, in order to enable the two shells 1 to be butted in the length direction and not to be limited to being right or left, one pair of opposite corners of the butt surface of each shell 1 is provided with an L-shaped boss 4, so that the other pair of opposite corners forms a recess 5, and the L-shaped boss 4 is clamped in the recess 5, so that the two shells 1 are butted in the length direction.

[0028] Further, in order to enable the two shells 1 to be butted in the width direction and not to be limited to being right or left, a limiting stop 6 is arranged on the inner side of the recess 5 of the butt surface of the shell 1, which is used for positioning the L-shaped boss 4, so that the two shells 1 are butted in the width direction.

[0029] Further, in order to enable the further butt joint of the two shells 1 to be accurate, one pair of opposite corners of the butt joint surface of each shell 1 is further provided with a butt joint boss 7, and the other pair of opposite corners is provided with a butt joint groove 8 matched with the butt joint boss 7; the height of the butt joint boss 7 is higher than the height of the L-shaped boss 4; during the butt joint process, the butt joint boss 7 is inserted into the butt joint groove 8 first due to the height of the butt joint boss 7 being higher than the height of the L-shaped boss 4, so that the two shells 1 are positioned and limited, and can be accurately positioned and installed.

[0030] Further, one pair of butt joint bosses 7 is staggered with one pair of L-shaped bosses 4, and the butt joint boss 7 is located on the inner side of the limiting baffle 6; due to the L-shaped boss 4 and the butt joint boss 7 arranged at each end of the shell, the width direction of the fuse link can be preliminarily limited.

[0031] Further, one pair of opposite corners of the butt joint surface of each shell 1 is further provided with a limiting column 9, and the other pair of opposite corners is provided with a butt joint hole 10 matched with the limiting column 9; the limiting column 9 is located on the inner side of the butt joint groove 8; during the butt joint process, one pair of limiting columns 9 can respectively pass through the fixing holes on the fuse link and extend into the butt joint hole 10, so that the position of the fuse link relative to the shell is fixed, and the fuse link cannot be distinguished as front or back.

[0032] Further, the limiting column 9 is conical, which is convenient for extending into the butt joint hole 10 through the fixing hole on the fuse link, and has a guiding effect.

[0033] Further, the two ends of each shell 1 are respectively provided with an arc-shaped notch 11; since the product is fixed by bolts, the semi-circular arc design can effectively increase the installation distance and is convenient for automatic installation.

[0034] Further, each shell 1 is integrally injection molded to directly form the chamber 2, the flame-retardant strip 3, the L-shaped boss 4, the recess 5, the limiting baffle 6, the butt joint boss 7, the butt joint groove 8, the limiting column 9, the butt joint hole 10 and the arc-shaped notch 11, which not only improves the production efficiency, but also reduces the production cost.

[0035] The above is only a specific application example of the utility model, and does not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. An automotive fuse housing, comprising two butted shells, the two shells being arranged rotationally symmetrically with the fuse link, characterized in that: The middle part of the docking surface of each shell includes a recessed cavity; a plurality of flame retardant strips placed at intervals are arranged in the cavity.

2. The automotive fuse housing according to claim 1, characterized in that: One pair of diagonal corners of each shell docking surface is respectively provided with an L-shaped boss, so that the other pair of diagonal corners forms a recessed portion; the L-shaped boss can be snapped into the recessed portion.

3. The automotive fuse housing according to claim 2, characterized in that: The shell docking surface is provided with a protruding limiting rib on the inner side of the recessed portion for positioning the L-shaped boss.

4. The automotive fuse housing according to claim 3, characterized in that: One pair of diagonal corners of each shell docking surface is also provided with a docking boss, and the other pair of diagonal corners is provided with a docking groove that cooperates with the docking boss; one pair of docking bosses is staggered with a pair of L-shaped bosses, and the docking bosses are located on the inner side of the limiting retaining edge; the height of the docking boss is higher than the height of the L-shaped boss.

5. The automotive fuse housing according to claim 4, characterized in that: One pair of diagonal corners of each shell docking surface is further provided with limiting columns, and the other pair of diagonal corners is provided with docking holes that cooperate with the limiting columns; the limiting columns are located on the inner side of the docking boss or the docking groove.

6. The automotive fuse housing according to claim 5, characterized in that: Each of the shells is integrally injection molded to directly form a cavity, a flame retardant strip, an L-shaped boss, a limiting rib, a limiting column, a docking hole, a docking boss and a docking groove.

7. The automotive fuse housing according to any one of claims 1 to 6, characterized in that: Both ends of each shell are respectively provided with an arc-shaped notch.

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