CN204304143U - A kind of can the fuse component of hot plug and connector - Google Patents

Abstract

The utility model provides a hot-swappable fuse assembly, which includes a housing, a fuse and two contact pieces, the contact piece is electrically connected to the connection end of the fuse, and the contact piece is used for contacting the two contacts of the base component respectively. The end plug contacts form an electrical connection. The utility model also provides a connector including a hot-swappable fuse assembly. The hot-swappable fuse assembly and connector provided by the utility model adopt the contact end not to directly plug and unplug the connecting end of the fuse, so that the high temperature generated by sparks during the hot-plug process will not directly damage the connecting end of the fuse At the same time, it does not affect the normal electrical connection performance of the contact piece, so as to realize the hot plugging of the fuse assembly; the two ends of the fuse holder respectively include multiple contact terminals, which further reduces the connection resistance; The clamping arm of the contact end of the seat cover and the base component is provided with a contact end ferrule to enhance the clamping force and form a more reliable electrical connection.

Description

A hot-swappable fuse assembly and connector

technical field

The utility model relates to the technical field of connectors, in particular to a hot-swappable fuse assembly and a connector.

Background technique

Fuses are often used in high-current lines to protect the circuit.

The application number is 201220503792.0 Chinese Utility Model Patent, which discloses a small connector assembly that can quickly replace the fuse, including a connector module and a fuse module. The connector module is responsible for the connection of the power supply and the load, as shown in Figure 1. Including cover 1, shell 2, terminal 3, fuse clamping terminal 4; fuse module includes fuse 5, fuse sheath 6, shaft 7, wrench 8, convex nail 9 and indicator light 10, as shown in Figure 2 .

The working principle of the above-mentioned compact connector assembly that can quickly replace the fuse is as follows: the terminal 3 and the clamping terminal 4 of the fuse are installed in the shell 2, the cover 1 is placed on the side of the shell 2, and the tube clamping terminal 4 is installed on the shell 2 , and then the fuse module, that is, the line end connector, is arranged on the top of the shell 2 . If the current is too large and the fuse 5 burns out, the indicator light 10 will light up. When replacing, you only need to move the wrench 8 with your fingers. The wrench 8 rotates around the shaft 7. Sliding against the sliding wall of the housing 2, at the same time the safety tube sheath 6 will receive an upward force, when the wrench 8 rotates to a certain angle, the safety tube sheath 6 with the safety tube 5 can be pulled loose, so that the safety tube sheath 6 can be easily removed. The insurance tube 5 is taken out from the insurance tube sheath 6 to realize the replacement of the insurance tube 5 .

However, the fuse of the above-mentioned connector assembly is in direct contact with the terminal. If the fuse is replaced by hot plugging, sparks will be generated at the connection end of the fuse. The high temperature generated by the spark will damage the connection end of the fuse, resulting in an increase in the resistance of the connection. If it is serious, it will cause an open circuit and affect the normal operation of the equipment.

In order to eliminate the need to pull out the power plug to ensure disconnection of the power supply and reduce power-off maintenance time during the maintenance of the equipment, those skilled in the art are committed to providing a hot-swappable fuse assembly and connector.

Contents of the invention

Aiming at the problems existing in the prior art, the purpose of this utility model is to provide a hot-swappable fuse assembly and connector, so that the device can replace the fuse without pulling out the power plug, thereby ensuring the safety of the device. The maintenance is convenient and fast, reducing the maintenance time of power failure.

The hot-swappable fuse assembly provided by the utility model adopts that the contact end of the base assembly of the connector does not directly plug and unplug the connection end of the contact fuse, so that the high temperature generated by the spark during the hot-plug process will not directly damage the fuse. The connecting end of the tube will only damage the first contact part of the contact piece, but will not damage other parts of the contact piece, thus not affecting the normal electrical connection of the contact piece, so as to realize the hot swap of the fuse tube assembly.

The utility model provides a hot-swappable fuse assembly, comprising:

shell;

the fuse is arranged in the casing; and

The two contact pieces are electrically connected to the connecting ends of the fuse, and the contact pieces are used for respectively plugging and contacting with the two contact ends of the base assembly to form an electrical connection.

The hot-swappable fuse assembly provided by the utility model adopts that the contact end of the base assembly of the connector does not directly plug and unplug the connection end of the contact fuse, so that the high temperature generated by the spark during the hot-plug process will not directly damage the fuse. At the same time, it does not affect the normal electrical connection performance of the contact piece, so as to realize the hot swap of the fuse tube assembly.

Further, a protrusion is provided on the side of the contact sheet that first contacts the contact end of the base component during the hot plugging process.

In the hot-swappable fuse assembly provided by the utility model, a protrusion is provided on the side of the contact sheet that first contacts the contact end of the base assembly during the hot-swapping process, so that the first contact is the protrusion, and the spark generated The parts damaged by high temperature are also concentrated in the protruding part, without damaging other parts of the contact piece, further ensuring the normal electrical connection performance of the contact piece.

Further, the protrusion is wedge-shaped, which facilitates the connection between the contact piece and the contact end of the base component.

Further, one end of the contact piece is provided with a fuse holder for clamping the fuse.

Further, the two ends of the fuse holder respectively include one or more contact ends, and when the two ends of the fuse holder include multiple contact ends, the fuse holder and the connecting end of the fuse form a multi-point contact, further reducing Small connection resistance.

Further, the fuse holder is covered with a holder cover to enhance the clamping force of the fuse holder and ensure reliable clamping of the fuse.

The utility model also provides a connector, which includes the hot-swappable fuse assembly and the base assembly of the utility model.

The connector provided by the utility model can replace the insurance tube in a hot-swappable manner, so that the device can replace the insurance tube without pulling out the power plug, thereby reducing the power-off maintenance time.

Further, the contact piece of the base component includes a pair of clamping arms, and a reliable electrical connection can be formed with the contact end of the fuse component by using the pair of clamping arms, thereby ensuring the electrical performance and reliability of the connector.

Further, the clamping arm is covered with a ferrule at the contact end to enhance the clamping force of the clamping arm and form a more reliable electrical connection with the contact piece of the fuse assembly.

Compared with the prior art, the hot-swappable fuse assembly and connector provided by the utility model have the following beneficial effects:

(1) The contact end of the connector is used, that is, the contact end of the base component is not directly plugged into the connection end of the contact fuse, so that the high temperature generated by the spark during the hot plugging process will not directly damage the connection end of the fuse, and at the same time It also does not affect the normal electrical connection performance of the contact piece, so as to realize the hot plugging of the fuse assembly;

(2) The fuse holder and the contact piece are integrally formed, so that the connection is reliable, the connection resistance is small, and the structure is simple, thereby ensuring the electrical performance and reliability of the fuse assembly;

(3) The two ends of the fuse holder include one or more contact ends respectively. When the two ends of the fuse holder include a plurality of contact ends, the fuse holder and the connecting end of the fuse form a multi-point contact, further reducing Small connection resistance;

(4) A card seat sleeve is provided on the outside of the fuse holder, and a contact end ferrule is provided on the outside of the clamping arm of the contact end of the base assembly to enhance the clamping force and form a more reliable electrical connection.

Description of drawings

Fig. 1 is a schematic structural diagram of a connector module of a connector assembly that can quickly replace a safety tube in the prior art;

Fig. 2 is a schematic structural diagram of the fuse module of the connector assembly that can quickly replace the fuse in the prior art;

Fig. 3 is an exploded view of a connector including a hot-swappable fuse assembly according to an embodiment of the present invention;

Fig. 4 is a perspective view of the hot-swappable fuse assembly shown in Fig. 3;

Fig. 5 is a perspective view of the fuse holder and the first contact piece of the hot-swappable fuse assembly shown in Fig. 3;

Fig. 6 is a perspective view of the fuse holder and the second contact piece of the hot-swappable fuse assembly shown in Fig. 3;

Fig. 7 is a perspective view of the fuse holder and the first contact piece of the hot-swappable fuse assembly shown in Fig. 3 ;

Fig. 8 is a perspective view of the fuse holder and the second contact piece of the hot-swappable fuse assembly shown in Fig. 3, which is sleeved with a holder cover;

Fig. 9 is a perspective view of the housing of the hot-swappable fuse assembly shown in Fig. 3;

Fig. 10 is a perspective view of the hot-swappable fuse assembly shown in Fig. 3;

11 is a perspective view of a first contact end of the base assembly of the connector shown in FIG. 3;

12 is a perspective view of a second contact end of the base assembly of the connector shown in FIG. 3;

Fig. 13 is a perspective view of the second contact end of the base assembly of the connector shown in Fig. 3, which is sleeved with a contact end ferrule;

FIG. 14 is a perspective view of a contact ferrule of the base assembly of the connector shown in FIG. 3 .

Detailed ways

The following are specific embodiments of the utility model, and further describe the technical solution of the utility model in conjunction with the drawings, but the utility model is not limited to the following examples.

As shown in FIG. 3 , a connector including a hot-swappable fuse assembly according to an embodiment of the present invention includes a hot-swappable fuse assembly 20 and a base assembly 30 ;

The fuse assembly 20 includes a housing 21, a fuse 22, a first contact piece 23 and a second contact piece 24;

The base assembly 30 includes a first contact end 31 and a second contact end 32;

During the insertion process of the fuse assembly 20 and the base assembly 30 , the first contact piece 23 is electrically connected to the first contact end 31 , and the second contact piece 24 is electrically connected to the second contact end 32 .

The first contact piece 23 and the second contact piece 24 are electrically connected to the connection end of the fuse tube 22, the first contact end 31 and the second contact end 32 are not directly plugged in contact with the connection end of the fuse tube 22, and the hot-swapping process The high temperature generated by the middle spark will not directly damage the connecting end of the fuse 22 , and will not affect the normal electrical connection between the first contact piece 23 and the second contact piece 24 , so that the hot plug of the fuse assembly 20 can be realized.

As shown in FIG. 4 , a protrusion 231 is provided on the side where the first contact piece 23 first contacts with the first contact end 31 of the base component 30 during the plug-in process, and the second contact piece 24 is in contact with the base assembly during the hot-plug process. The first contact side of the second contact end 32 of the seat assembly 30 is provided with a protrusion 241; with this structure, the protrusions 231 and 241 are the first to contact during the hot plugging process, and the parts of the high temperature damage caused by the spark are also concentrated on the The protrusions 231 and 241 do not damage other parts of the first contact piece 23 and the second contact piece 24 , further ensuring the normal electrical connection performance of the first contact piece 23 and the second contact piece 24 .

The protrusion 231 is wedge-shaped, which facilitates the plug-in connection between the first contact piece 23 and the first contact end 31 of the base assembly 30; Plug connection.

The fuse assembly 20 also includes two fuse holders 25 for clamping the fuse 22 , and the two fuse holders 25 are electrically connected to the first contact piece 23 and the second contact piece 24 respectively.

As shown in Figure 5 and Figure 6, in this embodiment, one end of the first contact piece 23 is provided with a fuse holder 25, and one end of the second contact piece 24 is provided with a fuse holder 25, which is made by integral molding, and the fuse holder is The connection between the seat 25 and the first contact piece 23 and the second contact piece 24 is reliable, the connection resistance is small, and the structure is simple, thereby ensuring the electrical performance and reliability of the fuse assembly.

The two ends of the fuse holder 25 respectively include one or more contact ends. In this embodiment, the two ends of the fuse holder 25 respectively include two contact ends. At the end, the fuse holder 25 forms a multi-point contact with the connection end of the fuse 22, further reducing the connection resistance.

Figure 7 shows that the insurance tube holder 25 provided at one end of the first contact piece 23 is covered with a holder cover 26, and Figure 8 shows that the safety tube holder 25 provided at one end of the second contact piece 24 is covered with a holder cover 26, In order to enhance the clamping force of the fuse holder 25, it is ensured that the fuse is reliably clamped.

Usually, in order to ensure better electrical connection performance, the fuse holder 25 is made of copper, and the material of copper is relatively soft, so it is difficult to provide sufficient clamping force. The card seat cover 26 is made of stainless steel, and due to the elasticity of the stainless steel material, it can provide sufficient clamping force to ensure reliable clamping of the safety tube.

Card seat cover 26 also can adopt other metal material, alloy material to make.

The socket cover 26 is also provided with a notch 261 .

As shown in Figure 9, the housing 21 is provided with a first through hole 211, and the bottom is provided with a first groove 212, the first through hole 211 is in communication with the first groove 212, and the first through hole 211 is used for installing the card seat cover 26 The fuse holder 25 and the first groove 212 are used to install the first contact piece 23, as shown in FIG. 10 after installation.

The first protrusion 213 is set on the side wall of the first through hole 211. When the fuse holder 25 and the holder cover 26 are installed in the housing 21, the notch 261 on the holder cover 26 cooperates with the first protrusion 213, and the The fuse holder 25 and the holder cover 26 are locked in the housing 21 to ensure that the structure of the fuse assembly 20 is firm.

As shown in Figure 9, the shell 21 is provided with a second through hole 214, the bottom is provided with a second groove 215, and the side is provided with a third groove 216, the second through hole 214 communicates with the second groove 215, and the second groove 215 communicates with the second groove 215. The third groove 216 communicates, and the second through hole 214 , the second groove 215 and the third groove 216 are used for installing the second contact piece 24 , as shown in FIG. 10 after installation.

The side wall of the second through hole 214 is provided with a second protrusion 217. When the fuse holder 25 and the holder cover 26 are installed in the housing 21, the notch 261 on the holder cover 26 cooperates with the second protrusion 217, and the The fuse holder 25 and the holder cover 26 are locked in the housing 21 to ensure that the structure of the fuse assembly 20 is firm.

A third protrusion 218 is also set in the third groove 216, and a notch 242 is set on the second contact piece 24. When the second contact piece 24 is installed in the third groove 216, the third protrusion 218 cooperates with the notch 242, and The second contact piece 24 is locked in the third groove 216 to ensure that the structure of the safety tube assembly 20 is firm.

The base assembly 30 includes a first contact end 31 and a second contact end 32 .

As shown in FIG. 11 , the first contact end 31 includes a first clamping arm 311 and a second clamping arm 312 . During the hot plugging process of the fuse assembly 20 , the protrusion 231 of the first contact piece 23 first contacts the charged The first clamping arm 311 and/or the second clamping arm 312 of the first contact end 31 will generate sparks at the protrusion 231, and the high temperature damage caused by the spark will also be concentrated at the protrusion 231 without damaging the first other parts of the contact sheet 23.

Subsequently, the first contact piece 23 continues to be pushed between the first clamping arm 311 and the second clamping arm 312, and the first clamping arm 311, the first clamping arm 311, The second clamping arm 312 forms an electrical connection, thereby ensuring the electrical performance of the connection.

The first clamping arm 311 and the second clamping arm 312 include two connection ends, forming a multi-point contact and further reducing connection resistance.

Similar to this, as shown in FIG. 12 , the second contact end 32 includes a first clamping arm 321 and a second clamping arm 322 , and the protrusion 241 of the second contact piece 24 The first clamping arm 321 and/or the second clamping arm 322 that first contacts the charged second contact end 32 will generate sparks at the protrusion 241, and the high temperature damage caused by the sparks will also concentrate on the protrusion 241 instead of Damage to other parts of the second contact piece 24.

Subsequently, the second contact piece 24 continues to be pushed between the first clamping arm 321 and the second clamping arm 322 of the second contact end 32, and the position not damaged by the high temperature generated by the spark on the second contact piece 24 and the first The first clamping arm 321 and the second clamping arm 322 form an electrical connection, thereby ensuring the electrical performance of the connection.

The first clamping arm 321 and the second clamping arm 322 include two connection ends, forming a multi-point contact and further reducing connection resistance.

Generally, in order to ensure better electrical connection performance, the first contact end 31 and the second contact end 32 are made of copper, but copper is soft and difficult to provide sufficient clamping force.

As shown in Figure 13, the first contact end 31 and the second contact end 32 are covered with a contact end ferrule 33, and the contact end ferrule 33 is made of stainless steel. Due to the elasticity of the stainless steel material, it can provide sufficient clamping force and ensure reliability. The ground is electrically connected to the first contact piece 23 and the second contact piece 24 .

The ferrule 33 at the contact end can also be made of other metal materials and alloy materials.

The ferrule 33 at the contact end is made of a plate, with a dovetail-shaped protrusion 333 processed on one side and a dovetail-shaped groove 334 processed on one side. The dovetail-shaped protrusion 333 and the dovetail-shaped groove 334 are fixed during installation.

As shown in FIG. 14 , the contact end ferrule 33 includes a first clamping arm 331 and a second clamping arm 332, which are used to clamp the clamping arms of the first contact end 31 or the second contact end 32 to increase the clamping capacity. holding power.

The ferrule 33 of the contact end also includes a notch 335 for cooperating with the protrusion at the corresponding position of the first contact end 31 or the second contact end 32 to better fix the ferrule 33 of the contact end.

The hot-swappable fuse assembly and connector provided by the utility model adopt the contact end of the base assembly of the connector without directly plugging and unplugging the connection end of the contact fuse, so that the high temperature generated by sparks during the hot-swapping process will not Directly damage the connection end of the fuse without affecting the normal electrical connection performance of the contact sheet, so as to realize the hot swap of the fuse assembly; the fuse holder and the contact sheet are integrally formed, making the connection reliable, the connection resistance small, and the structure Simple, so as to ensure the electrical performance and reliability of the fuse assembly; the two ends of the fuse holder respectively include one or more contact terminals, when the two ends of the fuse holder include multiple contact terminals, the fuse holder and the fuse The connecting end of the tube forms a multi-point contact to further reduce the connection resistance; the insurance tube card seat is covered with a card seat sleeve, and the clamping arm of the contact end of the base component is provided with a contact end ferrule to enhance the clamping force and form a more reliable electrical connection.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (9)

1. A hot-swappable fuse assembly, characterized in that it comprises: shell; a fuse disposed in the housing; and The two contact pieces are electrically connected to the connecting end of the fuse, and the contact pieces are used to respectively make plug-in contact with the two contact ends of the base assembly to form an electrical connection. 2 . The hot-swappable fuse assembly according to claim 1 , wherein a protrusion is provided on the side of the contact sheet that first contacts the contact end of the base assembly during the hot-swapping process. 3 . 3. The hot-swappable fuse assembly according to claim 2, wherein the protrusion is wedge-shaped. 4 . The hot-swappable fuse assembly according to claim 1 , wherein a fuse holder is provided at one end of the contact piece, and is used for clamping the fuse. 5 . 5 . The hot-swappable fuse assembly according to claim 4 , wherein both ends of the fuse holder respectively include one or more contact ends. 6 . 6 . The hot-swappable fuse assembly according to claim 4 , wherein a socket sleeve is provided outside the fuse holder to enhance the clamping force of the fuse holder. 7 . 7. A connector, characterized in that the connector comprises the hot-swappable fuse assembly and the base assembly according to claims 1-6. 8. The connector of claim 7, wherein the contact end of the base assembly includes a pair of clamping arms. 9 . The connector according to claim 8 , wherein a ferrule of the contact end is provided outside the clamping arm to enhance the clamping force of the clamping arm. 10 .