Terminal assembly of automobile fuse box

Abstract

The utility model relates to a terminal assembly of an automobile fuse box, which comprises a circuit board, a plurality of terminal sheets and a plurality of fuses, one end of each terminal sheet is provided with a plug pin plugged on the circuit board, and the other end of each terminal sheet is respectively provided with a first contact arm and a second contact arm which are contacted with the plug pins of the fuses. The first contact arm is provided with a first contact protruding part and a second contact protruding part, and the second contact arm is provided with a third contact protruding part corresponding to the position between the first contact protruding part and the second contact protruding part. A clamping space used for clamping an inserting piece of the fuse is formed among the first contact protruding part, the second contact protruding part and the third contact protruding part, an inserting hole for the inserting piece of the fuse to penetrate through is formed in the position, corresponding to the clamping space, of the box body, and the inserting piece penetrates through the inserting hole and is inserted into the clamping space. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and reliable contact.

Description

Technical Field

[0001] The utility model relates to an automobile fuse box, in particular to a terminal assembly of the automobile fuse box. Background Art

[0002] The automobile power fuse box assembly is a fuse box used to protect the various electrical circuits of the automobile. It can effectively protect the rated current carried by each power circuit of the automobile within a safe range, ensure that the circuits of the automobile will not cause damage to the electrical components or cause fire due to heavy load or short circuit, and ensure that the electrical components of the entire vehicle can operate safely and reliably. At present, the automobile power fuse box assembly generally includes a box body, a circuit board arranged in the box body, a terminal piece arranged on the circuit board, a fuse and a relay arranged on the box body and connected to the terminal piece. The terminal piece structure design of the existing automobile fuse box is unreasonable, resulting in unreliable contact between the fuse and the terminal piece, resulting in a high temperature rise of the product and unreliable performance. Summary of the invention

[0003] The utility model aims to overcome the defects of the prior art and provide a terminal assembly for an automobile fuse box with simple structure, stable and reliable performance, convenient assembly and reliable contact.

[0004] To achieve the above-mentioned purpose, the utility model adopts a terminal assembly of an automobile fuse box, comprising a circuit board arranged in a box body, a plurality of terminal pieces respectively arranged on the circuit board, and a plurality of fuses arranged on the box body and plugged with the plurality of terminal pieces, one end of the terminal piece has a plug pin plugged into the circuit board, and the other end of the terminal piece has a first contact arm and a second contact arm respectively contacting with the plug piece of the fuse, the first contact arm is respectively provided with a first contact protrusion and a second contact protrusion, and the second contact arm is provided with a third contact protrusion corresponding to the first contact protrusion and the second contact protrusion, a clamping space for clamping the plug piece of the fuse is formed between the first contact protrusion, the second contact protrusion and the third contact protrusion, and a plug hole for the plug piece of the fuse to pass through is provided on the box body corresponding to the clamping space, and the plug piece passes through the plug hole and is plugged into the clamping space.

[0005] The beneficial effects of the above structure are: the terminal piece has a first contact arm and a second contact arm that match the plug of the fuse, the first contact arm and the second contact arm are clamped on the plug of the fuse, and the first contact protrusion, the second contact protrusion, and the third contact protrusion are in three-point contact on both sides of the plug of the fuse, so that the contact between the plug of the fuse and the terminal piece is more reliable, the contact resistance is smaller, and the temperature rise is lower. Therefore, the terminal assembly of the automobile fuse box has the advantages of simple structure, stable and reliable performance, convenient assembly, and reliable contact.

[0006] In particular, the tails of the first contact arm and the second contact arm are respectively provided with guiding inclined surfaces that match the plug of the fuse. The guiding inclined surfaces can guide the plug of the fuse, thereby ensuring that the fuse can be reliably inserted between the first contact arm and the second contact arm, thereby facilitating the improvement of the working reliability of the terminal assembly of the automobile fuse.

[0007] In particular, a guide convex strip is provided on both sides of the fuse housing, and a stop block is provided on both sides of the corresponding guide convex strip on the box body, and a guide groove matching with the guide convex strip is formed between the two stop blocks. When the fuse is inserted into the socket, the guide convex strip is engaged in the guide groove. The guide groove of the box body guides the fuse, thereby facilitating the insertion of the fuse and the terminal piece, which is beneficial to improving the connection reliability between the fuse and the terminal piece.

[0008] In particular, the limiting block is provided with a limiting protrusion, and the fuse housing is provided with a limiting groove matched with the limiting protrusion. When the fuse is inserted into the jack, the limiting protrusion is engaged in the limiting groove, and the limiting block and the fuse housing are engaged. The limiting protrusion can lock the fuse housing, thereby ensuring that the fuse and the terminal piece are more compactly plugged in, preventing the fuse and the terminal piece from loosening or falling off, and making the connection more compact.

[0009] In particular, the housing of the fuse is provided with a plurality of anti-skid teeth, which can prevent slipping, thereby facilitating the user to plug the fuse into the terminal piece, and making assembly more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a stereogram of an embodiment of the utility model.

[0011] Figure 2 This is an exploded view of an embodiment of the utility model.

[0012] Figure 3 It is a cross-sectional view of an embodiment of the utility model.

[0013] Figure 4 It is a three-dimensional diagram of the terminal piece according to an embodiment of the utility model. DETAILED DESCRIPTION

[0014] like Figures 1 to 4As shown, the embodiment of the utility model is a terminal assembly of a car fuse box, comprising a circuit board 11 arranged in a box body 10, a plurality of terminal pieces 12 respectively arranged on the circuit board 11, and fuses 13 respectively arranged on the box body 10 and plugged with the plurality of terminal pieces 12, wherein one end of the terminal piece 12 has a plug pin 121 plugged into the circuit board 11, and the other end of the terminal piece 12 has a first contact arm 122 and a second contact arm 123 respectively contacting with the plug 131 of the fuse 13, and the first contact arm 122 is respectively provided with a first contact protrusion 1221 and a second contact The second contact arm 123 has a third contact protrusion 1231 disposed between the first contact protrusion 1221 and the second contact protrusion 1222. A clamping space 120 for clamping the plug 131 of the fuse 13 is formed between the first contact protrusion 1221, the second contact protrusion 1222 and the third contact protrusion 1231. The box body 10 has a plug hole 101 disposed at the position corresponding to the clamping space 120 for the plug 131 of the fuse 13 to pass through. The plug 131 passes through the plug hole 101 and is plugged into the clamping space 120. The tails of the first contact arm 122 and the second contact arm 123 are respectively provided with guide slopes 1200 that match the plug 131 of the fuse 13. The guiding slope can guide the insert of the fuse, thereby ensuring that the fuse can be reliably inserted between the first contact arm and the second contact arm, thereby facilitating improving the working reliability of the terminal assembly of the automobile fuse.

[0015] like Figure 2 and 3As shown, a guide ridge 1321 is provided on both sides of the housing 132 of the fuse 13, and a stopper 102 is provided on both sides of the corresponding guide ridge 1321 on the box body 10, and a guide groove 103 matching the guide ridge 1321 is formed between the two stopper blocks 102. When the fuse 13 is plugged into the socket 101, the guide ridge 1321 is engaged in the guide groove 103. The guide groove of the box body guides the fuse, thereby facilitating the plugging of the fuse and the terminal piece, which is beneficial to improving the connection reliability between the fuse and the terminal piece. The limiting block 102 is provided with a limiting protrusion 104, and the housing 132 of the fuse 13 is provided with a limiting groove 1322 that cooperates with the limiting protrusion 104. When the fuse 13 is plugged into the jack 101, the limiting protrusion 104 is engaged in the limiting groove 1322, and the limiting block 102 and the housing 132 of the fuse 13 are engaged. The limiting protrusion can lock the housing of the fuse, thereby ensuring that the fuse and the terminal piece are plugged more compactly, and the fuse and the terminal piece can be prevented from loosening and falling off, and the connection is more compact. The housing 132 of the fuse 13 is respectively provided with a plurality of anti-skid teeth 1323. The anti-skid teeth can play an anti-skid role, so that it is convenient for users to plug the fuse into the terminal piece, and the assembly is more convenient.

[0016] The terminal piece has a first contact arm and a second contact arm that match the plug-in piece of the fuse. The first contact arm and the second contact arm are clamped on the plug-in piece of the fuse. The first contact protrusion, the second contact protrusion, and the third contact protrusion are in three-point contact on both sides of the plug-in piece of the fuse, thereby ensuring that the plug-in piece of the fuse and the terminal piece are in more reliable contact, with smaller contact resistance and lower temperature rise. Therefore, the terminal assembly of the automobile fuse box has the advantages of simple structure, stable and reliable performance, convenient assembly, and reliable contact.

Claims

1. A terminal assembly for a car fuse box, characterized in that: The invention comprises a circuit board arranged in a box body, a plurality of terminal pieces respectively arranged on the circuit board, and a plurality of fuses arranged on the box body and plugged with the plurality of terminal pieces, wherein one end of the terminal piece has a plug pin plugged into the circuit board, and the other end of the terminal piece has a first contact arm and a second contact arm respectively contacting with the plug piece of the fuse, the first contact arm is respectively provided with a first contact protrusion and a second contact protrusion, the second contact arm is provided with a third contact protrusion corresponding to the first contact protrusion and the second contact protrusion, a clamping space for clamping the plug piece of the fuse is formed between the first contact protrusion, the second contact protrusion and the third contact protrusion, a plug hole for the plug piece of the fuse to pass through is provided on the box body corresponding to the clamping space, and the plug piece passes through the plug hole and is plugged into the clamping space.

2. The terminal assembly of the automobile fuse box according to claim 1, characterized in that: The tails of the first contact arm and the second contact arm are respectively provided with guiding inclined surfaces matched with the inserting pieces of the fuse.

3. The terminal assembly of the automobile fuse box according to claim 1 or 2, characterized in that: A guide ridge is provided on both sides of the fuse housing, and a limit block is provided on both sides of the box body corresponding to the guide ridge. A guide groove matched with the guide ridge is formed between the two limit blocks. When the fuse is plugged into the socket, the guide ridge is engaged in the guide groove.

4. The terminal assembly of the automobile fuse box according to claim 3, characterized in that: The limit block is provided with a limit protrusion, and the fuse housing is provided with a limit groove matched with the limit protrusion. When the fuse is inserted into the socket, the limit protrusion is engaged in the limit groove, and the limit block and the fuse housing are engaged with each other.

5. The terminal assembly of the automobile fuse box according to claim 4, characterized in that: A plurality of anti-slip teeth are respectively arranged on the housing of the fuse.

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