Electric connection structure

Abstract

The utility model discloses an electric connection structure which is used for being electrically connected with an element and comprises a base body and a connection terminal. The base body is provided with a connecting groove; the connecting terminal is fixedly connected with the base body and is provided with a connecting part, the connecting part is provided with a slot and side walls positioned on two sides of the slot, the slot is provided with an opening for a lead of an element to be inserted into the slot, and when the connecting part is inserted into the connecting slot, at least one side wall is forced to deform, so that the lead of the element is clamped in the slot. By adopting the technical scheme, the electric connection relation between the element and the connecting terminal is more reliable compared with the prior art.

Description

Technical Field

[0001] The present application relates to the field of electrical connection, and in particular to an electrical connection structure. Background Art

[0002] In the prior art, inductive devices such as coils will generate reverse electromotive force when disconnected, so it is generally required to connect suppression elements in parallel at both ends of the inductive device, such as resistors, diodes or voltage suppressors. Of course, in other application scenarios, it is also necessary to electrically connect to the components through connecting terminals. In the prior art, in order to electrically connect to the components, an open slot is often provided on the connecting terminal, and the lead of the component is inserted into the slot to achieve electrical connection with the connecting terminal. However, after the lead of the component is inserted into the slot, it is often due to vibration or other factors that the lead gradually withdraws from the slot during long-term use, thereby causing the electrical connection to fail. Utility Model Content

[0003] The purpose of the present application is to overcome the above-mentioned defects or problems existing in the background technology and to provide an electrical connection structure so that the electrical connection relationship between the component and the connection terminal is more reliable compared with the prior art.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] The first technical solution relates to an electrical connection structure, which is used to electrically connect to a component, and comprises: a substrate, which is provided with a connecting groove; and a connecting terminal, which is fixed to the substrate and provided with a connecting portion, wherein the connecting portion is provided with a slot and side walls located on both sides of the slot, wherein the slot is provided with an opening for inserting the lead of the component into the slot, and when the connecting portion is plugged into the connecting slot, at least one side wall is forced to deform so that the lead of the component is clamped in the slot.

[0006] The second technical solution is based on the first technical solution, wherein at least one side wall of the connecting part is provided with a protrusion facing the connecting groove, and the connecting groove is provided with a recessed part. When the connecting part is inserted into the connecting groove, the groove wall of the recessed part forces the protrusion to deform so that the lead of the component is clamped in the slot.

[0007] The third technical solution is based on the second technical solution, wherein both side walls of the connecting portion are provided with protrusions. After the two protrusions are inserted into the recessed portion, the groove walls on both sides of the recessed portion force the two protrusions to approach each other so that the leads of the component are clamped in the slot.

[0008] The fourth technical solution is based on the third technical solution, wherein the recessed portion is provided with an insertion opening, and starting from the insertion opening, the groove walls on both sides of the recessed portion approach each other along the insertion direction to force the two protrusions entering the insertion opening to approach each other.

[0009] The fifth technical solution is based on the first technical solution, wherein the opening gradually opens along the direction in which the connecting portion is inserted into the connecting groove.

[0010] The sixth technical solution is based on the first technical solution, wherein the slot is provided with a holding section for holding the lead wire therein, the holding section is provided with an entrance opening for the lead wire to enter the holding section, and an opening distance of the entrance opening is smaller than an inner diameter of the holding section.

[0011] The seventh technical solution is based on any one of the first to sixth technical solutions, wherein the base is also provided with a main body groove and a lead groove, the main body groove is used to accommodate the main body of the component, the lead groove is used to accommodate the lead and is connected with the main body groove, the connecting groove intersects with the lead groove, and the lead is supported by the bottom of the lead groove and inserted into the slot from the opening.

[0012] The eighth technical solution is based on the seventh technical solution, wherein the main body groove is connected with more than two lead grooves to form a component groove to accommodate the component, at least two lead grooves of the same component groove intersect with the corresponding connecting grooves, and each connecting groove intersecting with each lead groove of the same component groove is respectively plugged into and matched with the connecting parts of different connecting terminals.

[0013] The ninth technical solution is based on the first to sixth technical solutions, wherein the connecting portion is interference fit with the connecting groove so that the connecting terminal is fixed to the base; the connecting terminal is also provided with a first connecting end portion, which is at least partially located outside the connecting groove so as to be electrically connected to other devices.

[0014] The tenth technical scheme is based on the first to sixth technical schemes, wherein the connecting part is provided with a first arm and a second arm, the first arm extends along a first direction, the second arm extends along a second direction, the connecting part is inserted into the connecting groove along a third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the slot is located at the first arm or the second arm; the connecting groove is provided with a first groove section suitable for plugging and mating with the first arm and a second groove section suitable for plugging and mating with the second arm.

[0015] Compared with the prior art, the above solution has the following beneficial effects:

[0016] In the first technical solution, the connection terminal fixed to the base body is provided with a slot, and the slot is provided with an opening for inserting the lead wire of the component into the slot. When the connection part is plugged into the connection slot, at least one side wall of the connection part is forced to deform so that the lead wire of the component is clamped in the slot. Therefore, as long as the connection part is plugged into the connection slot, the side wall that is forced to deform will not recover its deformation, and the lead wire will always be reliably clamped in the slot. Therefore, the electrical connection relationship between the component and the connection terminal is more reliable than that of the prior art.

[0017] The second technical solution is a specific implementation of the first technical solution. At least one side wall of the connecting part is provided with a protrusion, and the connecting groove is provided with a recessed part. When the connecting part is inserted into the connecting groove, the groove wall of the recessed part forces the protrusion to deform, thereby realizing the first technical solution.

[0018] In the third technical solution, after the two protrusions are inserted into the recessed portion, the groove wall of the recessed portion forces the two protrusions to approach each other so that the two side walls clamp the lead wire, thereby enabling the lead wire to be clamped by the slot more reliably.

[0019] In the fourth technical solution, the groove walls on both sides of the recessed portion gradually approach each other along the insertion direction of the protrusion, which can guide the protrusion when it is inserted and force the two protrusions entering the insertion port to deform so that the two side walls clamp the lead wire and prevent the slot from opening.

[0020] In the fifth technical solution, the opening gradually opens along the direction in which the connecting portion is inserted into the connecting groove, which can guide the lead wire to be inserted into the slot, and can also reduce the shear force of the side wall on the lead wire when the bottom of the lead wire groove has not yet entered the slot, thereby more effectively avoiding the breakage of the lead wire of the component.

[0021] In the sixth technical solution, a retaining section is provided in the slot, and an entrance port is provided in the retaining section, and the opening distance of the entrance port is smaller than the inner diameter of the retaining section, so that the lead of the component is deformed when passing through the entrance port. Part of this deformation is plastic deformation, and part of it is elastic deformation. After the lead of the component enters the retaining section, the elastically deformed part will recover, so that the lead cannot exit the retaining section from the entrance port. Therefore, after the lead enters the retaining section, the reliable connection between the lead and the connecting terminal can be further improved.

[0022] In the seventh technical solution, the body groove is connected to the lead groove and is used to accommodate the body of the component, so that the component can be accommodated by the base, and the integration of the component and the electrical connection structure is higher. The lead is supported by the bottom of the lead groove and inserted into the slot from the opening, so the lead is clamped between the bottom of the lead groove and the wall of the slot. Since the connecting terminal is fixed to the base, the positional relationship between the bottom of the lead groove and the connecting part will not change, so the lead can maintain a more reliable connection with the connecting terminal.

[0023] In the eighth technical solution, each connection groove intersecting with each lead groove of the same element groove is respectively plugged into and matched with the connection parts of different connection terminals, and the connection terminals are fixed to the base, so that at least two ends of the element can be electrically connected to the outside through different connection terminals.

[0024] In the ninth technical solution, the connection portion and the connection groove are interference fit, so that after the connection terminal is inserted into the base, the connection terminal and the base can be fixedly connected, making the installation process more convenient. The first connection end is at least partially located outside the connection groove, which is conducive to electrical connection with other devices.

[0025] In the tenth technical solution, the extension direction of the first arm is perpendicular to the extension direction of the second arm to form an L-shaped structure, so that the plug-in fit between the connecting part and the connecting groove is more stable and less prone to shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0027] Figure 1 is a three-dimensional diagram of the electrical connection structure in the first embodiment;

[0028] Figure 2 is a three-dimensional exploded view of the electrical connection structure in Example 1;

[0029] Figure 3 is a three-dimensional diagram of the base body in Example 1;

[0030] Figure 4 Schematic diagram of interference fit between the slot hole and the protrusion in Example 1;

[0031] Figure 5 It is a schematic diagram of the cooperation between the recessed part and the protruding part in the first embodiment;

[0032] Figure 6 is a three-dimensional diagram of the third connecting terminal in the first embodiment;

[0033] Figure 7 is a side view of the first connecting terminal in the first embodiment;

[0034] Figure 8 is a three-dimensional diagram of the third connecting terminal in the second embodiment;

[0035] Fig. 9 It is a schematic diagram of the cooperation between the recessed portion and the protruding portion in the second embodiment.

[0036] Description of main reference numerals:

[0037] 1. Electrical connection structure; 2. Component; 3. Main body; 4. Lead; 5. Base; 6. Connecting terminal; 6a. First connecting terminal; 6b. Second connecting terminal; 6c. Third connecting terminal; 7. Component slot; 8. Connecting slot; 9. Main body slot; 10. Lead slot; 11. First slot section; 12. Second slot section; 13. Third slot section; 14. Slot hole; 15. Recess; 16. Connecting part; 17. First connecting end; 18. Second connecting end; 19. First arm; 20. Second arm; 21. Protrusion; 22. Third arm; 23. Protrusion; 24. Slot; 24a. Side wall; 25. Opening; 26. Holding section; 27. Entrance; X. First direction; Y. Third direction; Z. Second direction. DETAILED DESCRIPTION

[0038] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0039] In the claims and the specification, unless otherwise defined, the term "first direction" is a bidirectional direction, the term "second direction" is a unidirectional direction, and the term "third direction" is a unidirectional direction, and the three are orthogonal to each other.

[0040] In the claims and the specification, unless otherwise defined, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings and are only for the convenience of simplifying the description and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0041] In the claims and the specification, unless otherwise defined, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0042] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0043] In the claims and the specification, unless otherwise defined, the term "provided with" means that the technical feature located thereafter is a part of the technical feature located therefor.

[0044] In the claims and description, unless otherwise specified, the term "inner diameter of the retaining segment" refers to the maximum distance between two opposite surfaces forming the retaining segment in a direction perpendicular to the extension direction of the element slot and perpendicular to the insertion direction of the auxiliary element. In the embodiment, this distance refers to the maximum distance along the second direction.

[0045] In the claims and the specification, unless otherwise defined, the term "opening distance of the inlet port" refers to the minimum distance between two opposite surfaces forming the inlet port, and in an embodiment, the distance refers to the minimum distance along the second direction.

[0046] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0047] Embodiment 1

[0048] In this embodiment, the first direction X is a bidirectional direction, the second direction Z is a unidirectional direction, and the third direction Y is a unidirectional direction, and the three directions are orthogonal to each other.

[0049] See also Figure 1 and Figure 2 , Figure 1 and Figure 2 The electrical connection structure 1 in the embodiment is shown. Figure 1 As shown, the electrical connection structure 1 is used to electrically connect with the component 2. Figure 2 As shown, the component 2 includes a body 3 and two leads 4 located on both sides of the body.

[0050] like Figure 2 As shown, in this embodiment, the electrical connection structure 1 includes a substrate 5 and three connection terminals 6. The three connection terminals 6 are respectively a first connection terminal 6a, a second connection terminal 6b and a third connection terminal 6c.

[0051] See also Figure 3 , Figure 4 and Figure 5 , Figure 3 The base body 5 in the embodiment is shown. Figure 4 and Figure 5 The figure shows the partial matching relationship between the connecting terminal 6 and the base 5. Figure 3 As shown, in this embodiment, the base body 5 is provided with a component slot 7 and a connection slot 8. There are two component slots 7 arranged along the first direction X, and each component slot 7 includes a main body slot 9 and two lead slots 10. The main body slot 9 is used to accommodate the main body 3 of the component 2, and the two lead slots 10 are located on both sides of the main body slot 9 along the first direction X and are respectively used to accommodate the leads 4 of the component 2. There are three connection slots 8 arranged along the first direction X, and each connection slot 8 is provided with a first slot section 11, a second slot section 12 and a third slot section 13 that are connected to each other, wherein the first slot section 11 extends along the first direction X, the second slot section 12 extends from the first slot section 11 along the second direction Z, and the third slot section 13 extends away from the first slot section in the second direction Z. In this embodiment, in the connection slots 8 located on both sides along the first direction X, each connection slot 8 has only one second slot section 12; in the connection slot 8 located in the middle along the first direction X, the number of second slot sections 12 is two and they are parallel to each other. As shown in FIG. Figure 4 As shown, in this embodiment, each first slot section 11 is provided with a slot hole 14 extending along the third direction Y, and the slot hole 14 penetrates the base body 5 along the third direction Y. Figure 3As shown, in this embodiment, each second slot section 12 intersects with a lead slot 10 vertically. The second slot section 12 of the left connecting slot 8 and the second slot section 12 of the middle connecting slot 8 on the left side intersect with two lead slots 10 of a component slot 7 respectively; the second slot section 12 of the right connecting slot 8 and the second slot section 12 of the middle connecting slot 8 on the right side intersect with two lead slots 10 of a component slot 7 respectively. Figure 5 As shown, in this embodiment, each second groove section 12 is provided with a recessed portion 15 at the position intersecting with the lead groove 10, and the recessed portion 15 is provided with an insertion opening. Starting from the insertion opening, the groove walls on both sides of the recessed portion 15 gradually approach each other along the third direction Y.

[0052] See also Figure 6 and Figure 7 , Figure 6 and Figure 7 The connecting terminal 6 in the embodiment is shown. Figure 6 As shown, the connection terminal 6 includes a connection portion 16, a first connection end portion 17 and a second connection end portion 18 connected to each other as a whole. The connection portion 16 includes a first arm 19, a second arm 20, a protrusion 21 and a third arm 22 connected to each other as a whole. The first arm 19 extends along the first direction X and is suitable for plugging and matching with the first slot segment 11, the second arm 20 extends from the first arm 19 along the second direction Z and is suitable for plugging and matching with the second slot segment 12, the protrusion 21 extends from the first arm 19 along the third direction Y and is suitable for interference fit with the slot hole 14, and the third arm 22 extends from the first arm 19 away from the second direction Z and is suitable for plugging and matching with the third slot segment 13. Figure 7 As shown, the second arm 20 is provided with a slot 24, and the second arm 20 is also provided with side walls 24a located on both sides of the slot 24 along the second direction Z, and the front ends of the two side walls 24a along the third direction Y are provided with two protrusions 23, and the slot 24 is provided with an opening 25 along the third direction Y, and the opening 25 is for the lead 4 of the component 2 to be inserted. The opening 25 gradually opens along the third direction Y, and the bottom of the slot 24 forms a holding section 26, and the holding section 26 is used to hold the lead 4 therein, and the holding section 26 is provided with an entry 27 for the lead 4 to enter the holding section 26, and the opening distance of the entry 27 is less than the inner diameter of the holding section 26. As shown in FIG. Figure 6 As shown, the first connection end 17 extends from the protrusion 21 along the third direction Y, and the second connection end 18 extends from the third arm 22 away from the second direction Z. Both the first connection end and the second connection end are used for external connection to other devices and are located outside the connection groove 8.

[0053] like Figure 1As shown, in this embodiment, two components 2 are suitable for being installed in two component slots 7, the body 3 of each component 2 is accommodated in the body slot 9, and the lead 4 of each component 2 is accommodated in the lead slot 10. The connecting terminal 6 is plugged and assembled to the base 5 along the third direction Y, so that the connecting portion 16 is plugged and matched with the connecting slot 8, specifically, the first arm 19 is plugged and matched with the first slot section 11, the protrusion 21 is interference-fitted with the slot hole 14, and the second arm 20 is plugged and matched with the second slot section 12, as shown in FIG. Figure 5 As shown, the lead wire 4 is supported by the bottom of the lead wire groove 10 and inserted into the slot 24 from the opening 25 and abuts against the slot wall of the slot 24 until the lead wire 4 enters the retaining section 26 from the entrance 27. The lead wire 4 is clamped between the bottom of the lead wire groove 10 and the slot wall of the slot 24 and is retained in the retaining section 26. When the connecting portion 16 is plugged into the connecting groove 8, the two protrusions 23 extend into the recessed portion 15 and plug into the recessed portion 15. Since the slot walls on both sides of the recessed portion 15 gradually approach each other along the third direction Y, after the two protrusions 23 are inserted into the recessed portion 15, the walls on both sides of the recessed portion 15 force the two protrusions 23 to approach each other so that the lead wire 4 is clamped in the slot 24. Figure 1 As shown, the third arm 22 is plugged into the third slot section 13, and the second connecting end 18 extends out of the third slot section 13 away from the second direction Z. Figure 4 As shown, the first connecting end portion 17 extends out of the slot 14 along the third direction Y.

[0054] After the electrical connection structure 1 is connected, the two leads 4 of the component 2 fixed in the component slot 7 on the left side along the first direction X are electrically connected to the first connection terminal 6a and the second connection terminal 6b respectively, and can be connected in parallel or in series with an external device through the first connection terminal 6a and the second connection terminal 6b. The two leads 4 of the component 2 fixed in the component slot 7 on the right side along the first direction X are electrically connected to the second connection terminal 6b and the third connection terminal 6c respectively, and can be connected in parallel or in series with an external device through the second connection terminal 6b and the third connection terminal 6c.

[0055] In this embodiment, the connection terminal 6 fixed to the base 5 is provided with a slot 24, and the slot 24 is provided with an opening 25 for inserting the lead 4 of the component 2 into the slot 24. When the connection portion 16 is inserted into the connection groove 8, at least one side wall 24a of the connection portion 16 is forced to deform so that the lead 4 of the component 2 is clamped in the slot 24. Therefore, as long as the connection portion 16 is inserted into the connection groove 8, the side wall 24a that is forced to deform will not recover the deformation, and the lead 4 will always be reliably clamped in the slot 24. Therefore, the electrical connection relationship between the component 2 and the connection terminal 6 is more reliable than the prior art.

[0056] In this embodiment, after the two protrusions 23 are inserted into the recess 15 , the groove wall of the recess 15 forces the two protrusions 23 to approach each other so that the two side walls 24 a clamp the lead 4 , thereby enabling the lead 4 to be clamped by the slot 24 more reliably.

[0057] In this embodiment, the groove walls on both sides of the recessed portion 15 gradually approach each other along the insertion direction of the protrusion 23, which can guide the protrusion 23 when it is inserted and force the two protrusions 23 inserted into the insertion port to deform so that the two side walls 24a clamp the lead 4, while preventing the slot 24 from opening.

[0058] In this embodiment, the opening 25 gradually opens along the direction in which the connecting portion 16 is inserted into the connecting groove 8 (the third direction Y), which can guide the lead 4 to be inserted into the slot 24, and can also reduce the shear force of the side wall 24a on the lead 4 when the bottom of the lead groove 10 has not yet entered the slot 24, thereby more effectively avoiding the breakage of the lead 4 of the component 2.

[0059] In this embodiment, the slot 24 is provided with a retaining section 26, and the retaining section 26 is provided with an entry port 27, and the opening distance of the entry port 27 is smaller than the inner diameter of the retaining section 26, so that the lead 4 of the component 2 is deformed when passing through the entry port 27, and this deformation is partly plastic deformation and partly elastic deformation. After the lead 4 of the component 2 enters the retaining section 26, the elastically deformed part will recover, so that the lead 4 cannot exit the retaining section 26 from the entry port 27. Therefore, after the lead 4 enters the retaining section 26, the reliable connection between the lead 4 and the connecting terminal 6 can be further improved.

[0060] In this embodiment, the body groove 9 is connected to the lead groove 10 and is used to accommodate the body 3 of the component 2, so that the component 2 can be accommodated by the base 5, and the integration of the component 2 and the electrical connection structure 1 is higher. The lead 4 is supported by the bottom of the lead groove 10 and inserted into the slot 24 from the opening 25. Therefore, the lead 4 is sandwiched between the bottom of the lead groove 10 and the slot wall of the slot 24. Since the connection terminal 6 is fixed to the base 5, the lead 4 can maintain a more reliable connection with the connection terminal 6.

[0061] In this embodiment, each connection groove 8 intersecting with each lead groove 10 of the same component groove 7 is respectively plugged into and matched with the connecting portion 16 of different connection terminals 6, and the connection terminal 6 is fixed to the base 5. Therefore, at least two ends of the component 2 can be electrically connected to the outside through different connection terminals 6.

[0062] In this embodiment, the protrusion 21 is interference fit with the slot 14, that is, the connecting portion 16 is interference fit with the connecting slot 8, so that after the connecting terminal 6 is inserted into the base 5, the connecting terminal 6 and the base 5 can be fixedly connected, making the installation process more convenient. The first connecting end 17 and the second connecting end 18 are located outside the connecting slot 8, which is conducive to electrical connection with other devices.

[0063] In this embodiment, the extension direction of the first arm 19 is perpendicular to the extension direction of the second arm 20 to form an L-shaped structure, so that the plug-in fit between the connecting portion 16 and the connecting groove 8 is more stable and less prone to shaking.

[0064] Embodiment 2

[0065] See also Figure 8 and Fig. 9 , Figure 8 The third connecting terminal 6c in the second embodiment is shown. Fig. 9 The figure shows the partial matching relationship between the connecting terminal 6 and the base 5 in the second embodiment. Figure 8 and Fig. 9 As shown, the only difference between the connection terminal 6 in this embodiment and the connection terminal 6 in the first embodiment is that the side wall 24a located on the upper side along the second direction Z is no longer provided with the protrusion 23, and only the side wall 24a located on the lower side is provided with the protrusion 23.

[0066] When the connecting portion 16 is inserted into the connecting groove 8 , the protrusion 23 extends into the recess 15 , and the recess 15 forces the protrusion 23 to deform, so that the side wall 24 a at the lower side approaches the side wall 24 a at the upper side, so that the lead 4 is clamped in the slot 24 .

[0067] The other parts of the second embodiment are the same as those of the first embodiment.

[0068] Embodiment 2 provides another implementation of the present application, which shows that even if only one side wall 24a is forced to deform by the connecting groove 8, the lead 4 can be clamped in the slot 24, thereby achieving the invention purpose of the present application.

[0069] The above specification and description of the embodiments are used to explain the protection scope of the present application, but do not constitute a limitation on the protection scope of the present application.

Claims

1. An electrical connection structure, which is used for electrical connection with a component, characterized in that it includes: a base body provided with a connection groove; and The connecting terminal is fixedly connected to the base and is provided with a connecting part, wherein the connecting part is provided with a slot and side walls located on both sides of the slot, and the slot is provided with an opening for inserting the lead of the component into the slot. When the connecting part is plugged into the connecting slot, at least one side wall is forced to deform so that the lead of the component is clamped in the slot.

2. An electrical connection structure as claimed in claim 1, characterized in that: At least one side wall of the connecting part is provided with a protrusion facing the connecting groove, and the connecting groove is provided with a recessed part. When the connecting part is plugged into the connecting groove, the groove wall of the recessed part forces the protrusion to deform so that the lead of the component is clamped in the slot.

3. An electrical connection structure as claimed in claim 2, characterized in that: Both side walls of the connecting part are provided with protrusions. After the two protrusions are inserted into the recessed part, the groove walls on both sides of the recessed part force the two protrusions to approach each other so that the lead of the component is clamped in the slot.

4. An electrical connection structure as claimed in claim 3, characterized in that: The recessed portion is provided with an insertion opening, and starting from the insertion opening, the groove walls on both sides of the recessed portion approach each other along the insertion direction, so as to force the two protrusions entering the insertion opening to approach each other.

5. An electrical connection structure as claimed in claim 1, characterized in that: The opening gradually opens along the direction in which the connecting portion is inserted into the connecting groove.

6. An electrical connection structure as claimed in claim 1, characterized in that: The slot is provided with a holding section for holding the lead wire therein, and the holding section is provided with an entrance opening for the lead wire to enter the holding section, and an opening distance of the entrance opening is smaller than an inner diameter of the holding section.

7. An electrical connection structure according to any one of claims 1 to 6, characterized in that: The base is also provided with a body groove and a lead groove, the body groove is used to accommodate the body of the component, the lead groove is used to accommodate the lead and is connected with the body groove, the connecting groove intersects with the lead groove, and the lead is supported by the groove bottom of the lead groove and inserted into the slot from the opening.

8. An electrical connection structure as claimed in claim 7, characterized in that: The main body slot is connected with more than two lead slots to form a component slot to accommodate the component. At least two lead slots of the same component slot intersect with the corresponding connection slots, and each connection slot intersecting with each lead slot of the same component slot is respectively plugged into and matched with the connection parts of different connection terminals.

9. An electrical connection structure according to any one of claims 1 to 6, characterized in that: The connecting portion is interference-fitted with the connecting groove so that the connecting terminal is fixed to the base; the connecting terminal is also provided with a first connecting end portion, which is at least partially located outside the connecting groove so as to be electrically connected to other devices.

10. An electrical connection structure according to any one of claims 1 to 6, characterized in that: The connecting part is provided with a first arm and a second arm, the first arm extends along a first direction, the second arm extends along a second direction, the connecting part is inserted into the connecting slot along a third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the slot is located at the first arm or the second arm; the connecting slot is provided with a first slot section suitable for plugging and matching with the first arm and a second slot section suitable for plugging and matching with the second arm.

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