CN208637619U - A kind of attachment device - Google Patents

Abstract

A kind of attachment device belongs to electric connection technology field, comprising: the first conductor (1), one side are provided with multiple lug bosses (11)；Second conductor (2) is oppositely arranged and is detachably connected with the first conductor (1), and one side is provided with multiple recessed portions (21) to match with lug boss (11) shape；It is bonded by recessed portion (21) with lug boss (11), realizes being electrically connected for the second conductor (2) and the first conductor (1).The attachment device of the application, by the way that lug boss is arranged in the side of the first conductor, the recessed portion that setting matches with boss shapes in the side of the second conductor, enables recessed portion to fit closely with lug boss, in the case where not increasing conductor size, increase the contact area of conductor, reduce the contact resistance of conductor, to reduce conductor temp.-elevating, reduces temperature rise, the reliability of product is improved, so that the attachment device is suitable for the region of limited space.

Description

A kind of attachment device

Technical field

This application involves electric connection technology field more particularly to a kind of attachment devices.

Background technique

In many fields such as new-energy automobile or pure electric automobile, in order to realize the transmission of power and the control of function, It generally requires and is connected control module and functional module by cable, due to portions such as charge port, battery, controller and motors Circuit transmission process between part cannot be completed to transmit by single line cable, it is therefore desirable to which many connection structures are by each section of cable and control Molding block is connected with functional module.The connection structure of the prior art has plenty of by being interference fitted (fast socket, connector), has plenty of and leans on Metal charge connects (soldering), has plenty of and connects (electric resistance welding, Laser Welding) by metal molten.

Fig. 1 is the structural schematic diagram of connection structure in the prior art.

Fig. 1 is please referred to, since above-mentioned several connection types are limited by equipment technique, state space and design space, because This, the connection of most of route is 3. to fasten offer pressing force by screw 1. and 2. the conductor of two planar structures is contacted to realization Electrical connection.

1. and 2. connection structure in the prior art is made of the conductor of two planar structures, 1. and is 2. due to conductor Planar structure, 1. and 2. microcosmic surface is all rough, two conductor plane contacts really three point contact to conductor.When adopting It is three point contact at the beginning when 3. fastening with screw, as 3 points of increase of clamping force start flexible deformation, causes more Point start to contact, more points start flexible deformations, and with further increasing for clamping force, the three point contact of beginning may be into Enter plastic deformation, further other points also enter plastic deformation and flexible deformation, until deformation drag and screw-down torque generate Clamping dynamic balance until.But tighten the torque of screw 3. and only have 10% to act on clamping force, others 90% act on table Face frictional force and thread friction power.

The connection structure of the prior art guarantees conductor contact surface when design space is unrestricted, by increasing conductor size Product is sufficiently large, and the clamping force that screw provides is also sufficiently large, and the rigidity of conductor, can be the contact of conductor also in guaranteed situation Resistance control is within the scope of suitable.But when design space is restricted, since screw cannot select infinity, torque is not yet Infinity can be selected, this is resulted in the region of many structure constraints, due to that cannot select large torque screw that can not pass through increasing Big conductor size increases the contact area of conductor, causes the contact area of conductor inadequate, so as to cause the increasing of conductor contact resistance Add, contact resistance, which increases, leads to conductor temp.-elevating again, causes the temperature rise that conductor is excessive, further increases contact resistance, finally leads The failure of product is caused, therefore, the connection structure of the prior art is not suitable for the region of limited space.

In order to solve the above-mentioned technical problem, increase the contact area of conductor, the technical solution of the prior art is in this knot Structure restricted area increases conducting resinl, but conducting resinl has that conductivity is relatively low, contact resistance stability is poor, the mechanical property that is bonded Poor, the disadvantages of conductive filler is easy to migrate, price, cause connection structure at high cost, and for a long time using under rear conductive capability Drop.

Utility model content

(1) purpose of utility model

The purpose of the application is to provide a kind of attachment device, by the way that lug boss is arranged in the side of the first conductor, second The recessed portion that the side setting of conductor matches with boss shapes, enables recessed portion to fit closely with lug boss, increases The contact area of first conductor and the second conductor, solves in the region of many structure constraints, due to that cannot select to turn round greatly Square screw can not increase the contact area of conductor by increasing conductor size, cause the contact area of conductor inadequate, thus Conductor contact resistance is caused to increase, contact resistance, which increases, leads to conductor temp.-elevating again, causes the temperature rise that conductor is excessive, further makes to connect The technical issues of electric shock resistance increases, eventually leads to the failure of product, while by avoiding solving attachment device using conducting resinl Long-time is declined using rear conductive capability and technical problem at high cost.

(2) technical solution

To solve the above problems, this application provides a kind of attachment devices, comprising: the first conductor, one side are provided with more A lug boss；Second conductor is oppositely arranged and is detachably connected with first conductor, one side be provided with it is multiple with it is described convex Play the recessed portion that portion's shape matches；It is bonded by the recessed portion with the lug boss, realizes second conductor and institute State the electrical connection of the first conductor.The attachment device of the application is led by the structure of improvement the first conductor and the second conductor first Multiple lug bosses are arranged in the side of body, and multiple recess to match with boss shapes are arranged in the side of the second conductor Portion is shown so that the conductor contact area of the contact area of the first conductor and the second conductor than in the prior art increases by 30% or more Work reduces contact resistance, reduces temperature rise, improves the reliability of attachment device connection.

Further, first conductor is flat structure；Second conductor is flat structure.

Further, first conductor is polygon, and the lug boss is linearly distributed；Second conductor is polygon Shape, the recessed portion are linearly distributed.

Further, first conductor is that round or arc, the lug boss are along the circumferential direction distributed；Second conductor It is along the circumferential direction distributed for round or arc, the recessed portion.

Further, the lug boss is cone structure；The recessed portion is bowl configurations.

Further, the cone is pyramid or cone.

Further, the angular range between the inclined-plane of the cone and the bottom surface of the cone is 30~60 °.

Further, the lug boss is strip structure, and cross section is trapezoidal, arc or n shape；The recessed portion is length Strip groove structure.

Further, it is 30~60 ° that cross section, which is the angular range between the inclined-plane and its bottom surface of the trapezoidal lug boss,.

Further, first conductor is connect with second conductor by fastener, make the lug boss with it is described recessed Concave portion forms interference fit.

Further, the lug boss and the magnitude of interference of recessed portion interference fit are 0-0.3mm.

Further, the first mounting hole is provided on first conductor；It is provided on second conductor and described first The second mounting hole that installation hole shape matches.

(3) beneficial effect

The above-mentioned technical proposal of the application has following beneficial technical effect:

1, the attachment device of the application is arranged by the way that lug boss is arranged in the side of the first conductor in the side of the second conductor The recessed portion to match with boss shapes, enables recessed portion to fit closely with lug boss, increases the first conductor and The contact area of two conductors solves in the region of many structure constraints, due to that cannot select large torque screw that can not lead to The contact area for increasing conductor size to increase conductor is crossed, causes the contact area of conductor inadequate, contacts electricity so as to cause conductor Resistance increases, and contact resistance, which increases, leads to conductor temp.-elevating again, causes the temperature rise that conductor is excessive, further increases contact resistance, most The technical issues of leading to the failure of product eventually.The attachment device of the application is increased and is led in the case where not increasing conductor size The contact area of body, reduces the contact resistance of conductor, to reduce conductor temp.-elevating, reduces temperature rise, improves electrical effect Rate improves the reliability of the product using the attachment device, so that the attachment device is suitable for the region of limited space.

2, due to the attachment device of the application, the contact area of the first conductor and the second conductor is increased, avoids use Conducting resinl is solved since conducting resinl conductivity is relatively low, contact resistance stability is poor, the mechanical property of bonding is poor, conductive fills out Expect the technical issues of causing connection structure to decline for a long time using rear conductive capability easy to migrate, and since conducting resinl price is led Cause technical problem at high cost.The attachment device of the application passes through the conductive energy for avoiding ensure that attachment device using conducting resinl Power reduces costs.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the connection structure of the prior art；

Fig. 2 is the structural schematic diagram for the attachment device that the embodiment of the present application one provides；

Fig. 3 is the bottom view for the first conductor that the embodiment of the present application one provides；

Fig. 4 is sectional view of the Fig. 3 along the direction A-A；

Fig. 5 is the top view for the second conductor that the embodiment of the present application one provides；

Fig. 6 is sectional view of the Fig. 5 along the direction B-B；

Fig. 7 is the bottom view for the first conductor that the embodiment of the present application two provides；

Fig. 8 be Fig. 7 along C to view；

Fig. 9 is the top view for the second conductor that the embodiment of the present application two provides；

Figure 10 be Fig. 9 along D to view.

Appended drawing reference:

1: the first conductor；11: lug boss；12: the first mounting holes；2: the second conductors；21: recessed portion；22: the second installations Hole；1., 2.: conductor；3.: screw.

Specific embodiment

To keep the purposes, technical schemes and advantages of the application more clear, With reference to embodiment and join According to attached drawing, the application is further described.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this Shen Range please.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid this is unnecessarily obscured The concept of application.

Embodiment one

Fig. 2 is the structural schematic diagram for the attachment device that the embodiment of the present application one provides.

Fig. 3 is the bottom view for the first conductor that the embodiment of the present application one provides.

Fig. 4 is sectional view of the Fig. 3 along the direction A-A.

Fig. 5 is the top view for the second conductor that the embodiment of the present application one provides.

Fig. 6 is sectional view of the Fig. 5 along the direction B-B.

- Fig. 6 referring to figure 2., the embodiment of the present application one provide a kind of attachment device, comprising: the first conductor 1 and the second conductor 2。

First conductor 1 is flat structure, and one side is provided with multiple lug bosses 11.

Second conductor 2 is flat structure, is oppositely arranged and is detachably connected with the first conductor 1, one side is provided with more A recessed portion 21 to match with 11 shape of lug boss.

It is bonded by recessed portion 21 with lug boss 11, realizes being electrically connected for the second conductor 2 and the first conductor 1.

The attachment device of the application, by improving the structure of the first conductor 1 and the second conductor 2, in the side of the first conductor 1 Multiple lug bosses 11 are set, and multiple recessed portions 21 to match with 11 shape of lug boss are set in the side of the second conductor 2, So that the conductor contact area of the contact area of the first conductor 1 and the second conductor 2 than in the prior art increases by 30% or more, significantly Contact resistance is reduced, temperature rise is reduced, improves the reliability of attachment device connection.

Optionally, the first conductor 1 is flat structure or the second conductor 2 is flat structure.

Optionally, the first conductor 1 and the second conductor 2 are all flat structure.

Optionally, the first conductor 1 is connect with the second conductor 2 by fastener, forms lug boss 11 and recessed portion 21 It is full of cooperation.

Optionally, the magnitude of interference that lug boss 11 and recessed portion 21 are interference fitted is 0-0.3mm.

Specifically, it is provided with the first mounting hole 12 on the first conductor 1, is provided on the second conductor 2 and the first mounting hole 12 The second mounting hole 22 that shape matches, fastener pass through the first mounting hole 12 and the second mounting hole 22 make the first conductor 1 with Second conductor 2 is fastenedly connected, so that lug boss 11 and recessed portion 21 are formed and be interference fitted.

Optionally, fastener includes but is not limited to screw.

Optionally, lug boss 11 is distributed in the side of the first conductor 1 in certain rule, the distributing position of recessed portion 21 with it is convex The distributing position for playing portion 11 is corresponding, by the way that lug boss 11 and recessed portion 21 to be set as being distributed in certain rule, realizes convex Play the fully mated of portion 11 and recessed portion 21.

Optionally, lug boss 11 is evenly distributed on the side of the first conductor 1, correspondingly, recessed portion 21 is evenly distributed on The side of two conductors 2.By the way that lug boss 11 and recessed portion 21 to be set as being uniformly distributed, lug boss 11 and recessed portion 21 are realized The clamping force that is subject to of fully mated while evenly dispersed first conductor 1 and the second conductor 2.

Optionally, the first conductor 1 is polygon, and lug boss 11 is linearly distributed；Second conductor 2 is polygon, recessed portion 21 linear distributions, the distributing position of recessed portion 21 is corresponding with the distributing position of lug boss 11, by by lug boss 11 and recessed Concave portion 21 is set as linearly being distributed, and the fully mated of lug boss 11 and recessed portion 21 is realized, referring to figure 3. and shown in Fig. 5.

Optionally, the first conductor 1 is circle, and lug boss 11 is along the circumferential direction distributed；Second conductor 2 is circle, recessed portion 21 are along the circumferential direction distributed, and the distributing position of recessed portion 21 is corresponding with the distributing position of lug boss 11, by by lug boss 11 It is set as along the circumferential direction being distributed with recessed portion 21, realizes the fully mated of lug boss 11 and recessed portion 21.

Optionally, the first conductor 1 is arc, and lug boss 11 is along the circumferential direction distributed；Second conductor 2 is arc, recessed portion 21 are along the circumferential direction distributed, and the distributing position of recessed portion 21 is corresponding with the distributing position of lug boss 11, by by lug boss 11 It is set as along the circumferential direction being distributed with recessed portion 21, realizes the fully mated of lug boss 11 and recessed portion 21.

But the application is not limited system, and the shape of the first conductor 1 and the second conductor 2 may be other shapes, protrusion The regularity of distribution of portion 11 and recessed portion 21 can be according to the shape appropriate adjustment of the first conductor 1 and the second conductor 2.

In the present embodiment, lug boss 11 is cone structure；Recessed portion 21 is bowl configurations.Specifically, by lug boss 11 It is set as cone structure, and one end of cone structure is connect with the first conductor 1, the other end gradually tapers up, and recessed portion 21 is arranged For the bowl configurations to match with cone structure shape, lug boss 11 is cooperated with recessed portion 21, and increases Contact area.Optionally, the end of the small end of cone structure is formed as planar structure.

Optionally, the bottom of bowl configurations is formed as planar structure.

Optionally, cone is pyramid or cone.But the application is not limited system, and cone may be other shapes Cone.

Preferably, pyramid is rectangular pyramid.

Optionally, the angular range between the inclined-plane of cone and the bottom surface of cone is 30~60 °, and angle is too small, contact surface Product increases fewer, and angle is too big, and the contact force of the first conductor 1 and the second conductor 2 is too small, causes contact resistance to increase, takes This angular range ensure that the contact force of the first conductor 1 and the second conductor 2, increase the first conductor 1 and the second conductor 2 Contact area reduces contact resistance.

Preferably, the angle between the inclined-plane of cone and the bottom surface of cone is 45 °.

Optionally, the material of the first conductor 1 and the second conductor 2 can be copper, aluminium, gold or silver.But the application not as The material of limitation, the first conductor 1 and the second conductor 2 may be other electric conductors.

When the electric current that the first conductor 1 and the second conductor 2 pass through is larger, copper is generallyd use as conductor material, due to copper Material is relatively soft, and the size of lug boss 11 and recessed portion 21 is little, and therefore, the first conductor 1 and the second conductor 2 can pass through punching press One-pass molding, to reduce processing cost.

The attachment device of the application is set by the way that lug boss 11 is arranged in the side of the first conductor 1 in the side of the second conductor 2 The recessed portion 21 to match with 11 shape of lug boss is set, recessed portion 21 is fitted closely with lug boss 11, is not being increased In the case where 2 size of first conductor 1 and the second conductor, the contact area of the first conductor 1 and the second conductor 2 is increased, is reduced The contact resistance of first conductor 1 and the second conductor 2 reduces temperature rise to reduce the first conductor 1 and the fever of the second conductor 2, The reliability of the product using the attachment device is improved, so that the attachment device is suitable for the region of limited space.

Embodiment two

Fig. 7 is the bottom view for the first conductor that the embodiment of the present application two provides.

Fig. 8 be Fig. 7 along C to view.

Fig. 9 is the top view for the second conductor that the embodiment of the present application two provides.

Figure 10 be Fig. 9 along D to view.

Please refer to Fig. 7-Figure 10, the present embodiment and embodiment one the difference is that, lug boss 11 and recessed portion 21 Shape is different, and in the present embodiment, lug boss 11 is strip structure, and cross section is trapezoidal, arc or n shape；Recessed portion 21 For strip-shaped groove structure.

Optionally, it is 30~60 ° that cross section, which is the angular range between the inclined-plane and its bottom surface of trapezoidal lug boss 11, folder Angle is too small, and contact area increases fewer, and angle is too big, and the contact force of the first conductor 1 and the second conductor 2 is too small, causes to connect Electric shock resistance increases, and takes this angular range, ensure that the contact force of the first conductor 1 and the second conductor 2, increases the first conductor 1 With the contact area of the second conductor 2, contact resistance is reduced.

Preferably, it is 45 ° that cross section, which is the angle between the inclined-plane and its bottom surface of trapezoidal lug boss 11,.

In the present embodiment, strip structure is set by lug boss 11, sets recessed portion 21 to and strip structure The strip-shaped groove structure that shape matches, enables lug boss 11 to cooperate with recessed portion 21, and increase contact surface Product.

In the present embodiment, the regularity of distribution of lug boss 11 and recessed portion 21 can refer to the setting of embodiment one, but the application It is not limited system, the lug boss 11 and recessed portion 21 in the present embodiment can also use other distribution modes.

Structure, position and the connection relationship of other parts in the present embodiment are the same as example 1, no longer superfluous herein It states.

The application is intended to protect a kind of attachment device, has following beneficial technical effect:

1, the attachment device of the application is arranged by the way that lug boss is arranged in the side of the first conductor in the side of the second conductor The recessed portion to match with boss shapes, enables recessed portion to fit closely with lug boss, increases the first conductor and The contact area of two conductors solves in the region of many structure constraints, due to that cannot select large torque screw that can not lead to The contact area for increasing conductor size to increase conductor is crossed, causes the contact area of conductor inadequate, contacts electricity so as to cause conductor Resistance increases, and contact resistance, which increases, leads to conductor temp.-elevating again, causes the temperature rise that conductor is excessive, further increases contact resistance, most The technical issues of leading to the failure of product eventually.The attachment device of the application is increased and is led in the case where not increasing conductor size The contact area of body, reduces the contact resistance of conductor, to reduce conductor temp.-elevating, reduces temperature rise, improves electrical effect Rate improves the reliability of the product using the attachment device, so that the attachment device is suitable for the region of limited space.

2, due to the attachment device of the application, the contact area of the first conductor and the second conductor is increased, avoids use Conducting resinl is solved since conducting resinl conductivity is relatively low, contact resistance stability is poor, the mechanical property of bonding is poor, conductive fills out Expect the technical issues of causing connection structure to decline for a long time using rear conductive capability easy to migrate, and since conducting resinl price is led Cause technical problem at high cost.The attachment device of the application passes through the conductive energy for avoiding ensure that attachment device using conducting resinl Power reduces costs.

It should be understood that the above-mentioned specific embodiment of the application is used only for exemplary illustration or explains the application's Principle, without constituting the limitation to the application.Therefore, that is done without departing from spirit and scope is any Modification, equivalent replacement, improvement etc., should be included within the scope of protection of this application.In addition, the application appended claims purport Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing Change example.

Claims (12)

1. a kind of attachment device characterized by comprising

First conductor (1), one side are provided with multiple lug bosses (11)；

Second conductor (2) is oppositely arranged and is detachably connected with first conductor (1), one side be provided with it is multiple with it is described The recessed portion (21) that lug boss (11) shape matches；

It is bonded by the recessed portion (21) with the lug boss (11), realizes second conductor (2) and led with described first The electrical connection of body (1).

2. attachment device according to claim 1, which is characterized in that

First conductor (1) is flat structure；And/or

Second conductor (2) is flat structure.

3. attachment device according to claim 2, which is characterized in that

First conductor (1) is polygon, and the lug boss (11) is linearly distributed；

Second conductor (2) is polygon, and the recessed portion (21) is linearly distributed.

4. attachment device according to claim 2, which is characterized in that

First conductor (1) is that round or arc, the lug boss (11) are along the circumferential direction distributed；

Second conductor (2) is that round or arc, the recessed portion (21) are along the circumferential direction distributed.

5. attachment device according to claim 2, which is characterized in that

The lug boss (11) is cone structure；

The recessed portion (21) is bowl configurations.

6. attachment device according to claim 5, which is characterized in that

The cone is pyramid or cone.

7. attachment device according to claim 6, which is characterized in that

Angular range between the inclined-plane of the cone and the bottom surface of the cone is 30~60 °.

8. attachment device according to claim 2, which is characterized in that

The lug boss (11) is strip structure, and cross section is trapezoidal, arc or n shape；

The recessed portion (21) is strip-shaped groove structure.

9. attachment device according to claim 8, which is characterized in that

Cross section is that the angular range between the inclined-plane and its bottom surface of the trapezoidal lug boss (11) is 30~60 °.

10. attachment device described in any one of -9 according to claim 1, which is characterized in that

First conductor (1) is connect with second conductor (2) by fastener, and the lug boss (11) and the recess are made Portion (21) forms interference fit.

11. attachment device according to claim 10, which is characterized in that

The magnitude of interference of the lug boss (11) and the recessed portion (21) interference fit is 0-0.3mm.

12. attachment device described in any one of -9 according to claim 1, which is characterized in that

The first mounting hole (12) are provided on first conductor (1)；

The second mounting hole (22) to match with the first mounting hole (12) shape is provided on second conductor (2).