CN219574160U

CN219574160U - Connection auxiliary device and connection structure

Info

Publication number: CN219574160U
Application number: CN202223320893.7U
Authority: CN
Inventors: 郭步骞; 周昊鹏
Original assignee: Beijing Huafeng Equipment Technology Co ltd
Current assignee: Beijing Huafeng Equipment Technology Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-08-22
Anticipated expiration: 2032-12-09

Abstract

A connection assisting apparatus and a connection structure, comprising: the circuit board is welded with a reed; the limiting piece is detachably connected with the circuit board, a first auxiliary hole is formed in the limiting piece, the first auxiliary hole is in a through hole shape, the reed is located in the first auxiliary hole, the width of the first auxiliary hole is matched with the width of the reed, and the length of the first auxiliary hole is set to be that the reed is bent in the first auxiliary hole to a preset angle and then is abutted to the first auxiliary hole. The length of the first auxiliary hole is set to be the length of the reed and is abutted against the first auxiliary hole when the reed is bent to a preset angle in the first auxiliary hole, so that the bending angle of the reed can be limited, the bending angle of the reed is prevented from being overlarge, the connection effect when the reed is inserted into the first auxiliary hole to be connected with the reed in a plugging manner is affected, and the service life is prevented from being influenced by overlarge deformation of the reed.

Description

Connection auxiliary device and connection structure

Technical Field

The present utility model relates to the field of semiconductor devices, and more particularly, to a connection assisting apparatus and a connection structure.

Background

In electrical connections, plug connections made through the reed and pin are often encountered. Taking a relay as an example, as an electric control device for controlling large current operation by small current, a connecting structure matched with the relay is needed to realize connection of the relay and test equipment in the test process, so that the test of electric parameters is carried out. The pin arrangement of the relay is irregular and various, and the reed for the fixed test is buried in the polytetrafluoroethylene material by drilling at present and is connected with the pin of the relay in a plugging manner. When the arrangement consistency of the pin and the reed of the relay is poor, and the position accuracy of the pin and the reed of the relay is not high, poor contact between the pin and the reed can be caused in the test process, the test result is affected, and the service life is also affected due to overlarge deformation of the reed. Therefore, there is a need for a connection assisting device and a connection structure, which can assist the reed when the pin is connected with the reed in a plugging manner, so as to improve the connection effect between the reed and the pin and avoid the influence of the excessive deformation of the reed on the service life.

Disclosure of Invention

Therefore, the main object of the present utility model is to provide a connection auxiliary device and a connection structure, which can assist the reed when the pin and the reed are connected in a plugging manner, so as to improve the connection effect between the reed and the pin, and avoid the influence of excessive deformation of the reed on the service life.

A first aspect of the present utility model provides a connection assisting apparatus for assisting connection of a reed to a pin, comprising: the spring leaf is characterized by comprising a limiting piece, wherein a first auxiliary hole is formed in the limiting piece and is in a through hole shape, the width of the first auxiliary hole is matched with the width of the spring leaf, and the length of the first auxiliary hole is set to be that the spring leaf is abutted to the first auxiliary hole when being bent to a preset angle in the first auxiliary hole.

By adopting the structure, the length of the first auxiliary hole is set to be the length of the reed to be abutted against the first auxiliary hole when the reed is bent to a preset angle in the first auxiliary hole, so that the bending angle of the reed can be limited, the bending angle of the reed is prevented from being overlarge, the connection effect when the reed is inserted into the first auxiliary hole to be connected with the reed in a plugging manner is affected, and the service life is prevented from being influenced by overlarge deformation of the reed.

In addition, when the reeds are arranged in the first auxiliary holes in pairs, the pins are inserted between the paired reeds, and the elastic force of the reeds is used for clamping and fixing the pins, the width of the first auxiliary holes is matched with the width of the reeds, so that the pins can be prevented from shifting when being inserted between the paired reeds, and the pins are inserted into the side positions of the reeds, so that the connecting effect is affected. The reed can be prevented from rotating in the first auxiliary hole, and the connection effect of the pin and the reed is affected.

As a possible implementation manner of the first aspect, the method further includes: and the insulating pieces are positioned at the positions of the reeds close to the root parts, the reeds are arranged in pairs, and the insulating pieces keep the reeds arranged in pairs at a preset distance.

By adopting the structure, the reeds are fixedly arranged on the insulating piece, so that the paired reeds can keep a preset distance, the distance between the paired reeds can be kept through the insulating piece, and the short circuit between the paired reeds is avoided, and the detection result is prevented from being influenced. In addition, by fixedly disposing the paired reed on the insulating member, the paired reed can also be soldered to the circuit board with ease.

As a possible implementation manner of the first aspect, the method further includes: the fixing piece is located at one side of the limiting piece, a second auxiliary hole is formed in the fixing piece and communicated with the first auxiliary hole, and the second auxiliary hole is matched with the insulating piece.

By adopting the structure, the insulating piece is arranged in the second auxiliary hole, so that the insulating piece can be fixed through the second auxiliary hole, the stability of the reed can be improved, and the connecting effect of the reed and the pin during plug connection is improved.

As a possible implementation manner of the first aspect, the method further includes: the guide piece is positioned at the other side of the limiting piece, a third auxiliary hole is formed in the guide piece, and the third auxiliary holes are arranged towards the centers of the paired reeds.

By adopting the structure, the third auxiliary holes are arranged towards the centers of the paired reeds, so that when pins are inserted between the paired reeds, the pins can be guided by the third auxiliary Kong Duiguan pins, and the connection effect is prevented from being influenced by pin insertion distortion.

As a possible implementation manner of the first aspect, the limiting member and/or the fixing member is made of a stack of multiple layers of printed boards.

By adopting the structure, the limiting piece and the fixing piece are manufactured by stacking the multilayer printed boards, the depth of the first auxiliary hole and the depth of the second auxiliary hole can be adjusted by adjusting the number of layers of the multilayer printed boards and the thickness of each layer of the printed boards. From this, can adjust the degree of depth of first auxiliary hole and second auxiliary hole according to the length of reed and the thickness of insulating part, make the degree of depth of second auxiliary hole and the thickness looks adaptation of insulating part to improve the fixed effect of second auxiliary hole to the insulating part. The depth of the first auxiliary hole is adapted to the length of the reed exposed by the insulator so that the reed is entirely within the first auxiliary hole.

In addition, since the pins are generally provided in plural, each pin needs to be provided with a pair of reeds correspondingly. When the distance between the pins is relatively close, the distance between the first auxiliary hole and the second auxiliary hole needs to be set small. Therefore, the processing difficulty can be reduced and the processing precision can be improved by arranging the first auxiliary holes and the second auxiliary holes on the printed board.

A second aspect of the present utility model provides a connection structure, comprising: the circuit board is welded with a reed; the limiting piece is detachably connected with the circuit board, a first auxiliary hole is formed in the limiting piece, the first auxiliary hole is in a through hole shape, the reed is located in the first auxiliary hole, the width of the first auxiliary hole is matched with the width of the reed, and the length of the first auxiliary hole is set to be that the reed is bent in the first auxiliary hole to a preset angle and then is abutted to the first auxiliary hole.

As a possible implementation manner of the second aspect, the method further includes: and the insulating pieces are positioned at the positions of the reeds close to the root parts, the reeds are arranged in pairs, and the insulating pieces keep the reeds arranged in pairs at a preset distance.

As a possible implementation manner of the second aspect, the method further includes: the fixing piece is located the locating part with circuit board intermediate position, be provided with the second auxiliary hole on the fixing piece, the second auxiliary hole with first auxiliary hole is linked together, the second auxiliary hole with insulating part looks adaptation, the insulating part is located in the second auxiliary hole.

As a possible implementation manner of the second aspect, the method further includes: the guide piece is located at a position, far away from one side of the circuit board, of the limiting piece, a third auxiliary hole is formed in the guide piece, and the third auxiliary holes are arranged towards the centers of the paired reeds.

As a possible implementation manner of the second aspect, the limiting member and/or the fixing member is made of a stack of multilayer printed boards.

Drawings

FIG. 1 is a schematic structural diagram of a connection structure according to an embodiment of the present utility model;

FIG. 2 is a schematic front view of the fixing member of FIG. 1;

FIG. 3 is a schematic perspective view showing the connection state of the fixing member, the insulating member and the reed in FIG. 1;

FIG. 4 is a schematic perspective view of the limiting member of FIG. 1;

fig. 5 is a schematic front projection of the guide of fig. 1.

Description of the reference numerals

10 a connection structure; 100 auxiliary devices; 110 limiting pieces; 111 a first auxiliary hole; 120 insulating members; 130 fixing members; 131 a second auxiliary hole; 140 guides; 141 a third auxiliary hole; 150 bolts; 160 fixing holes; 200 reed; 300 circuit board.

Detailed Description

Next, a detailed description will be given of a specific structure of the connection assisting apparatus 100 in the embodiment of the present utility model with reference to the drawings.

Fig. 1 is a schematic structural diagram of a connection structure 10 according to an embodiment of the present utility model. As shown in fig. 1, the connection auxiliary device 100 in the embodiment of the utility model is used for assisting the connection between the reed 200 and the pin, and comprises a limiting piece 110, wherein a first auxiliary hole 111 is arranged on the limiting piece 110, the first auxiliary hole 111 is in a through hole shape, the width of the first auxiliary hole 111 is matched with the width of the reed 200, and the length of the first auxiliary hole 111 is set to be in butt joint with the first auxiliary hole 111 when the reed 200 is bent to a preset angle in the first auxiliary hole 111. By setting the length of the first auxiliary hole 111 to be in contact with the first auxiliary hole 111 when the reed 200 is bent to a predetermined angle in the first auxiliary hole 111, the bending angle of the reed 200 can be limited, so that the influence of overlarge bending angle of the reed 200 on the connection effect with the insertion of a pin into the first auxiliary hole 111 and the plug connection of the reed 200 is avoided, and the influence of overlarge deformation of the reed 200 on the service life is avoided.

In addition, when the springs 200 are disposed in pairs in the first auxiliary holes 111, pins are inserted between the pairs of springs 200, and the pins are clamped and fixed by the elastic force of the springs 200, the width of the first auxiliary holes 111 is adapted to the width of the springs 200, so that the pins are prevented from being offset when inserted between the pairs of springs 200, and inserted into the side positions of the springs 200, thereby affecting the connection effect. It is also possible to prevent the reed 200 from rotating in the first auxiliary hole 111, affecting the connection effect of the pin with the reed 200.

In some embodiments, as shown in fig. 1, the connection assisting apparatus 100 further includes an insulating member 120, the insulating member 120 being located near the root of the reed 200, the reeds 200 being arranged in pairs, the insulating member 120 maintaining the reeds 200 arranged in pairs at a predetermined distance. By fixedly disposing the reed 200 on the insulating member 120, the paired reeds 200 are kept at a predetermined distance, so that the distance between the paired reeds 200 can be maintained by the insulating member 120, and the occurrence of a short circuit between the paired reeds 200 is avoided, affecting the detection result. In addition, by fixedly disposing the paired reed 200 on the insulating member 120, the paired reed 200 can also be soldered to the circuit board 300 with ease.

In some embodiments, as shown in fig. 1, the connection auxiliary device 100 further includes a fixing member 130, where the fixing member 130 is located at a side of the limiting member 110, and a second auxiliary hole 131 is disposed on the fixing member 130, where the second auxiliary hole 131 is communicated with the first auxiliary hole 111, and the second auxiliary hole 131 is matched with the insulating member 120. Through setting up insulating part 120 in second auxiliary hole 131 to can fix insulating part 120 through second auxiliary hole 131, and then can improve the stability of reed 200, improve the connection effect when reed 200 and pin carry out plug connection.

In some embodiments, as shown in fig. 1, the connection assisting apparatus 100 further includes a guide 140, the guide 140 being located at the other side of the stopper, and a third assisting hole 141 being provided on the guide 140, the third assisting hole 141 being provided toward the center of the paired reeds 200. By arranging the third auxiliary holes 141 toward the centers of the paired reed 200, the pins can be guided by the third auxiliary holes 141 when the pins are inserted between the paired reed 200, and the connection effect is prevented from being affected by the pin insertion skew.

In some embodiments, as shown in fig. 1, the limiter 110 and/or the retainer 130 are made from a stack of multiple layers of printed boards. The limiting member 110 and the fixing member 130 are manufactured by stacking the multi-layer printed boards, and the depth of the first auxiliary hole 111 and the second auxiliary hole 131 can be further adjusted by adjusting the number of layers of the multi-layer printed boards and the thickness of each layer of the printed boards. Therefore, the depth of the first auxiliary hole 111 and the second auxiliary hole 131 can be adjusted according to the length of the reed 200 and the thickness of the insulating member 120, so that the depth of the second auxiliary hole 131 is matched with the thickness of the insulating member 120, and the fixing effect of the second auxiliary hole 131 on the insulating member 120 is improved. The depth of the first auxiliary hole 111 is adapted to the length of the reed 200 exposed from the insulating member 120 so that the reed 200 is entirely within the first auxiliary hole 111.

In addition, since the pins are generally provided in plural, each pin needs to be provided with a pair of reeds 200 correspondingly. When the distance between the pins is relatively short, the distance between the first auxiliary hole 111 and the second auxiliary hole 131 needs to be set small. Thus, the first auxiliary hole 111 and the second auxiliary hole 131 are formed in the printed board, so that the processing difficulty can be reduced, and the processing precision can be improved.

The present utility model further provides a connection structure 10, and a detailed description will be given below of a specific structure of the connection structure 10 in the embodiment of the present utility model with reference to the drawings.

As shown in fig. 1, a connection structure 10 in an embodiment of the present utility model includes: the circuit board 300, the reed 200 is welded on the circuit board 300; the limiting piece 110, the limiting piece 110 and the circuit board 300 can be detachably connected through modes such as a bolt 150 and a clamping mode, a first auxiliary hole 111 is formed in the limiting piece 110, the first auxiliary hole 111 is in a through hole shape, the reed 200 is located in the first auxiliary hole 111, the width of the first auxiliary hole 111 is matched with the width of the reed 200, and the length of the first auxiliary hole 111 is set to be in contact with the first auxiliary hole 111 when the reed 200 is bent to a preset angle in the first auxiliary hole 111.

In some embodiments, as shown in fig. 1, the connection structure 10 further includes an insulating member 120, the insulating member 120 being located near the root of the reed 200, the reed 200 being disposed in pairs, and the insulating member 120 maintaining the reed 200 disposed in pairs at a predetermined distance.

In some embodiments, as shown in fig. 1, the connection structure 10 further includes a fixing member 130, the fixing member 130 is located at a middle position between the limiting member 110 and the circuit board 300, a second auxiliary hole 131 is disposed on the fixing member 130, the second auxiliary hole 131 is communicated with the first auxiliary hole 111, the second auxiliary hole 131 is matched with the insulating member 120, and the insulating member 120 is located in the second auxiliary hole 131.

In some embodiments, as shown in fig. 1, the connection structure 10 further includes a guide member 140, where the guide member 140 is located at a side of the limiting member away from the circuit board 300, and a third auxiliary hole 141 is provided on the guide member 140, and the third auxiliary hole 141 is disposed toward the center of the paired reeds 200.

In some embodiments, as shown in fig. 1, the limiter 110 and/or the retainer 130 are made from a stack of multiple layers of printed boards.

The following describes the specific structure of the auxiliary device 100 and the connection structure 10 according to the present utility model in detail in one embodiment with reference to the accompanying drawings.

FIG. 2 is a schematic front view of the fixing member 130 in FIG. 1; fig. 3 is a schematic perspective view showing a state in which the fixing member 130, the insulating member 140 and the reed 200 are connected in fig. 1; fig. 4 is a schematic perspective view of the limiting member 110 in fig. 1; fig. 5 is a schematic front projection structure of the guide 140 in fig. 1. As shown in fig. 1 to 5, the connection structure 10 in the present embodiment includes a circuit board 300, a reed 200, an insulating member 120, a fixing member 130, a limiting member 110, a guide member 140, and a bolt 150. Wherein, a connection hole (not shown) into which the reed 200 is inserted is provided on the circuit board 300, and the root portion (lower end shown in fig. 1) of the reed 200 is inserted into the connection hole on the circuit board 300, and then fixed on the circuit board 300 by soldering, and electrically connected to the circuit board 300. The reed 200 is provided with a plurality of pairs arranged in a square array on the circuit board 300. The heads (upper ends shown in fig. 1) of the reeds 200 are V-shaped, so that the paired reeds 200 form a clamping structure, so that when the pins are inserted between the paired reeds 200, the pins can be clamped by the heads of the reeds 200, and the plug connection between the reeds 200 and the pins is completed. The paired reeds 200 are perpendicular to the circuit board 300 and are symmetrically arranged in parallel with a certain interval to prevent a short circuit between the two reeds 200.

The circuit board 300, the fixing member 130, the limiting member 110 and the guiding member 140 are in a rectangular plate-shaped structure, four corners of the reed 200 arranged around the array on the circuit board 300, and four corners of the fixing member 130, the limiting member 110 and the guiding member 140 are provided with fixing holes 160, after the circuit board 300, the fixing member 130, the limiting member 110 and the guiding member 140 are sequentially stacked, the fixing holes 160 at the four corners of the circuit board 300, the fixing member 130, the limiting member 110 and the guiding member 140 are aligned one by one, and the bolts 150 penetrate through the fixing holes 160 to fix the circuit board 300, the fixing member 130, the limiting member 110 and the guiding member 140 together.

As shown in fig. 1 and 3, the insulating member 120 is cylindrical, and before the paired reeds 200 are welded on the circuit board 300, the paired reeds 200 may be fixed on the insulating member 120 along the axial direction of the insulating member 120, so that the insulating member 120 is located at a position near the root of the reeds 200, so that after the root of the reeds 200 is inserted into the connecting hole on the circuit board 300, the insulating member 120 is abutted against the circuit board 300, thereby improving the stability of the reeds 200. After the reed 200 is fixed to the insulator 120, the paired reeds 200 can be kept a certain distance by the insulator 120. Specifically, the distance between the paired reeds 200 may be set to be smaller than the diameter of the pin so that when the pin is inserted between the paired reeds 200, the connection between the reeds 200 and the pin can be made tighter by the elastic force of the reeds 200 to improve the connection effect.

As shown in fig. 1 to 5, the stopper 110 is provided with a first auxiliary hole 111 at a position corresponding to the reed 200, the holder 130 is provided with a second auxiliary hole 131 at a position corresponding to the reed 200, and the guide 140 is provided with a third auxiliary hole 141 at a position corresponding to the reed 200. After the fixing member 130, the limiting member 110 and the guide member 140 are stacked and fixed on the circuit board 300, the centers of the first auxiliary hole 111, the second auxiliary hole 131 and the third auxiliary hole 141 are overlapped, and the first auxiliary hole 111 and the second auxiliary hole 131 form a space for accommodating the reed 200.

As shown in fig. 1 and 3, the second auxiliary hole 131 is a circular through hole, the insulating member 120 is cylindrical, and is adapted to the size of the second auxiliary hole 131, and the thickness of the insulating member 120 is adapted to the depth of the second auxiliary hole 131. The insulator 120 may be disposed in the second auxiliary hole 131, completely fill the second auxiliary hole 131, and be fastened to the second auxiliary hole 131. Accordingly, the insulator 120 and the reed 200 can be fixed by the fixing member 130, and the stability of the reed 200 can be improved.

As shown in fig. 3, the insulator 120 and the reed 200 may be fixedly connected to each other and then fixed to the fixing member 130 together when the mounting is performed. After the fixing is completed, the fixing member 130 is disposed on the circuit board 300, and the root portions of the plurality of reeds 200 on the fixing member 130 are inserted into the corresponding connection holes on the circuit board 300, so that the reeds 200 are uniformly welded on the circuit board 300, thereby reducing the assembly time and improving the assembly efficiency.

As shown in fig. 1 and 4, the first auxiliary hole 111 is a rectangular through hole, the width direction of the first auxiliary hole 111 is the same as the width direction of the reed 200, and the length direction of the first auxiliary hole 111 is the same as the arrangement direction of the two reeds 200 in a pair. The width of the first auxiliary hole 111 is adapted to the width of the reed 200, so that the paired reeds 200 can be deformed in the length direction of the first auxiliary hole 111 in the first auxiliary hole 111, and at the same time, when a pin is inserted between the paired reeds 200, the side of the pin insertion reed 200 is prevented, and the connection effect of the reed 200 and the pin is affected. The length of the first auxiliary hole 111 is longer than the space occupied by the pair of two reeds 200 in the length direction of the first auxiliary hole 111. Specifically, when the two paired reed pieces 200 are separated and deformed in the longitudinal direction of the first auxiliary hole 111 to reach a predetermined deformation angle, the reed pieces 200 are abutted against the first auxiliary hole 111. Thereby preventing the spring 200 from being excessively bent to affect the connection effect when the pin is inserted into the first auxiliary hole 111 to be connected with the spring 200 in a plugging manner, and preventing the spring 200 from being excessively deformed to affect the service life. In addition, the spring 200 can be deformed to reach a predetermined angle and then be abutted against the first auxiliary hole 111, so that the force required to be output when the pin driving spring 200 continues to deform can be improved, the clamping force of the spring 200 on the pin is further improved, and the connecting effect of the spring 200 and the pin is improved.

As shown in fig. 1, the depth of the first auxiliary hole 111 is greater than the height of the reed 200 exposed from the insulating member 120, so that the exposed portion of the reed 200 can be completely located in the first auxiliary hole 111, and the first auxiliary hole 111 provides protection for the reed 200.

As shown in fig. 1 and 5, the third auxiliary hole 141 is a circular through hole, and the axis of the third auxiliary hole 141 coincides with the center of the second auxiliary hole 131, so that the third auxiliary hole 141 extends toward the center of the paired two reeds 200. The diameter of the third auxiliary hole 141 is smaller than the width of the first auxiliary hole 111 and slightly larger than the diameter of the pin. Thus, when the pins are connected to the reeds 200 in a plug-in manner, the pins can be guided through the third auxiliary holes 141 so that the pins are inserted between the reeds 200 along the center of the paired reeds 200. Therefore, the convenience of the plug connection of the pin and the reed 200 can be improved, the pin is limited by the third auxiliary hole 141, the shaking of the pin is reduced, and the connection effect between the pin and the reed 200 is improved.

As shown in fig. 1, the limiting member 110 and the fixing member 130 are stacked by a plurality of printed boards, and it is not necessary to directly customize an expensive and large-thickness printed board, so that the production cost can be reduced. The thicknesses of the limiting member 110 and the fixing member 130 can be flexibly adjusted by adjusting the number of layers of the printed boards and the thicknesses of the printed boards of each layer, so that the depths of the first auxiliary hole 111 and the second auxiliary hole 131 can be flexibly adjusted. Thus, the thicknesses of the stopper 110 and the fixing member 130 can be flexibly set according to the model and size of the reed 200.

In addition, the printed board has the advantages of high temperature resistance, easiness in processing, and the like, compared with materials such as polytetrafluoroethylene, that is, the first auxiliary holes 111 and the second auxiliary holes 131 with smaller intervals can be processed on the limiting member 110 and the fixing member 130 respectively. Thus, when the pitch between the pins is smaller, the pitch requirement of the first auxiliary hole 111 and the second auxiliary hole 131 is satisfied.

Meanwhile, the stopper 110 and the fixing member 130 are formed by a plurality of layers of printed boards, so that the processing of the first auxiliary hole 111 or the second auxiliary hole 131 can be performed on each layer of printed board, respectively, at the time of the processing. Thus, the depth of the first auxiliary holes 111 and the second auxiliary holes 131 can be reduced, so that the difficulty in machining can be reduced, and the intervals between the plurality of first auxiliary holes 111 and the plurality of second auxiliary holes 131 can be made smaller. Thereby, the fitting range of the stopper 110 and the fixing member 130 can be increased.

As shown in fig. 3, when the paired reeds 200 are arranged in a square array, the arrangement direction between the paired reeds 200 is arranged at an intersection of 45 ° with the arrangement direction of the square array. Thereby, the distance between adjacent two rows of reeds 200 can be reduced. Correspondingly, as shown in fig. 4, the first auxiliary holes 111 are arranged in a square array on the limiting member 110, and the length direction of the first auxiliary holes 111 is arranged in a 45-degree intersection with the arrangement direction of the square array. Thereby, the pitch of the pins adapted to the connection structure 10 can be made smaller, thereby increasing the adaptation range of the connection structure 10.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A connection assisting apparatus for assisting connection of a reed to a pin, comprising:

the spring leaf is characterized by comprising a limiting piece, wherein a first auxiliary hole is formed in the limiting piece and is in a through hole shape, the width of the first auxiliary hole is matched with the width of the spring leaf, and the length of the first auxiliary hole is set to be that the spring leaf is abutted to the first auxiliary hole when being bent to a preset angle in the first auxiliary hole.

2. The connection assistance device according to claim 1, further comprising:

and the insulating pieces are positioned at the positions of the reeds close to the root parts, the reeds are arranged in pairs, and the insulating pieces keep the reeds arranged in pairs at a preset distance.

3. The connection assistance apparatus according to claim 2, further comprising:

the fixing piece is located at one side of the limiting piece, a second auxiliary hole is formed in the fixing piece and communicated with the first auxiliary hole, and the second auxiliary hole is matched with the insulating piece.

4. A connection assistance apparatus according to claim 3, further comprising:

the guide piece is positioned at the other side of the limiting piece, a third auxiliary hole is formed in the guide piece, and the third auxiliary holes are arranged towards the centers of the paired reeds.

5. The connection aid according to any of claims 3 or 4, wherein the limit piece and/or the fixing piece is made of a stack of multilayer printed boards.

6. The connection aid according to claim 1 or 2, wherein the limit piece is made of a stack of multilayer printed boards.

7. A connection structure, characterized by comprising:

the circuit board is welded with a reed;

the limiting piece is detachably connected with the circuit board, a first auxiliary hole is formed in the limiting piece, the first auxiliary hole is in a through hole shape, the reed is located in the first auxiliary hole, the width of the first auxiliary hole is matched with the width of the reed, and the length of the first auxiliary hole is set to be that the reed is bent in the first auxiliary hole to a preset angle and then is abutted to the first auxiliary hole.

8. The connection structure according to claim 7, further comprising:

9. The connection structure according to claim 8, further comprising:

the fixing piece is located the locating part with circuit board intermediate position, be provided with the second auxiliary hole on the fixing piece, the second auxiliary hole with first auxiliary hole is linked together, the second auxiliary hole with insulating part looks adaptation, the insulating part is located in the second auxiliary hole.

10. The connection structure according to claim 9, further comprising:

the guide piece is located at a position, far away from one side of the circuit board, of the limiting piece, a third auxiliary hole is formed in the guide piece, and the third auxiliary holes are arranged towards the centers of the paired reeds.

11. The connection structure according to any one of claims 9 or 10, wherein the retainer and/or the fixture is made of a stack of multilayer printed boards.

12. The connection structure according to claim 7 or 8, wherein the stopper is made of a stack of multilayer printed boards.