Connecting elastic sheet and electrode connecting structure

Abstract

The utility model provides a connecting elastic sheet and an electrode connecting structure, which comprises a fixed frame and an elastic arm which are connected with each other, one end of the elastic arm is fixedly connected with the fixed frame, and the other end of the elastic arm is provided with an abutting part which is used for abutting against an electrode; the abutting part comprises a pressing and touching protruding block and a hook arm, and the pressing and touching protruding block is arranged on the outer side of the hook arm. And the hook arms are bent inwards and extend. The hook arm comprises a first oblique arm, a first arc-shaped bent arm and a second oblique arm which are connected in sequence, the first oblique arm is connected with the elastic arm, the first oblique arm inclines outwards, the first arc-shaped bent arm is bent inwards, the second oblique arm inclines inwards, and the first oblique arm, the first arc-shaped bent arm and the second oblique arm are connected in sequence to form a hook shape; the pressing contact protruding block extends in the extending direction of the hook arm. The contact part of the connecting elastic piece is provided with the press-touch convex block, and the transverse and longitudinal heights of the press-touch convex block are smoothly and gradually changed, so that the to-be-connected electrode is easier to assemble, the clamping firmness is enhanced, and the connection stability of the connecting elastic piece and the biological electrode is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spring connectors, in particular to a connecting spring and an electrode connecting structure. Background Art

[0002] Connector shrapnel is a component used in electronic devices to connect different electronic components or circuit boards. They are usually made of conductive materials and can vary in shape and size to suit different application requirements. In electronic devices, the role of electrode connector shrapnel is to ensure that current can pass smoothly, thereby achieving signal transmission and energy conversion between electronic components. In the fields of medical equipment, communication equipment, computer hardware, automotive electronics, etc., electrode connector shrapnel is an indispensable component.

[0003] In order to form a stable electrical connection, the contact area between the electrode and the connecting spring of the electrode is relatively large, so that it can better press against the electrode surface. However, due to the large contact area, the surface of the electrode to be connected may be damaged, and the connection structure composed of multiple connecting springs may make the electrode to be connected more difficult to insert and inconvenient to assemble if the contact area is large. Therefore, how to reduce the contact surface of the connecting spring's contact part so that the connecting spring can form a stable electrical connection with the electrode and facilitate assembly has become an urgent problem to be solved. Utility Model Content

[0004] In view of this, the purpose of the utility model is to solve the problem of how to form a stable electrical connection between a connecting spring and an electrode and facilitate assembly, and to provide a connecting spring and an electrode connection structure.

[0005] The utility model provides the following technical solutions:

[0006] In a first aspect, the present application provides a connecting spring sheet, comprising a fixing frame and an elastic arm connected to each other, one end of the elastic arm is fixedly connected to the fixing frame, and the other end of the elastic arm is provided with a resisting portion, and the resisting portion is used to resist a connecting electrode;

[0007] The abutting portion comprises a pressure contact protrusion and a hook arm, wherein the pressure contact protrusion is arranged on the outer side of the hook arm; and the hook arm is bent inwardly and extended.

[0008] Preferably, the hook arm comprises a first oblique arm, a first arc-shaped bent arm and a second oblique arm connected in sequence, the first oblique arm is connected to the elastic arm, the first oblique arm is inclined outward, the first arc-shaped bent arm is bent inward, the second oblique arm is inclined inward, and the first oblique arm, the first arc-shaped bent arm and the second oblique arm are connected in sequence to form a hook shape;

[0009] The pressing bump is arranged on the outer sides of the first inclined arm, the first arc-shaped bending arm and the second inclined arm; the pressing bump extends along the extending direction of the hook arm. The specific position of the pressing bump

[0010] Preferably, the second inclined arm is inclined towards the fixing bracket, and the two ends of the end of the second inclined arm away from the first arc-shaped bending arm are chamfered. Stop, prevent from hooking, prevent excessive bending from damaging the circuit board

[0011] Preferably, the middle part of the pressing bump in the long direction protrudes outwards to form a pressing beam;

[0012] The height on both sides of the pressing beam in the transverse direction gradually decreases; the height of the pressing bump in the longitudinal direction gradually decreases with the pressing beam as the boundary.

[0013] Preferably, the midpoint in the transverse direction of the pressing bump is within the range of 0-20% of the width of the contact part on both sides of the midpoint in the transverse direction of the contact part.

[0014] Preferably, the elastic arm includes a second arc-shaped arm, a third inclined arm, a third arc-shaped arm and a fourth inclined arm connected in sequence; the second arc-shaped arm is connected to the fixing bracket, and the fourth inclined arm is connected to the contact part; the second arc-shaped arm is bent outwards, the third inclined arm extends obliquely upwards, the third arc-shaped arm is bent inwards, and the fourth inclined arm extends obliquely downwards.

[0015] Preferably, the width from the end where the fourth inclined arm is connected to the third arc-shaped arm to the end where the fourth inclined arm is connected to the contact part gradually decreases progressively.

[0016] Preferably, the fixing bracket includes a connecting part, two supporting side walls and a mounting part; the two sides of the connecting part are respectively connected to the supporting side walls, and the mounting part is arranged at the bottom of the supporting side walls; one end of the connecting part is connected to the supporting section.

[0017] In a second aspect, the present application provides an electrode connection structure, including two or more connecting elastic pieces as described in the first aspect; at least one of the connecting elastic pieces and the other connecting elastic pieces are located on different sides of the electrode to be connected.

[0018] In a third aspect, the present application provides an electrode connection structure, including three or more connecting elastic pieces as described in the first aspect above; three of the connecting elastic pieces form a set of clamping elastic piece groups, and the three elastic arms of the clamping elastic piece groups are respectively arranged on the transverse opposite sides of the electrode to be clamped; the transverse projection parts of the three elastic arms partially overlap each other; there are gaps between the three elastic arms pairwise;

[0019] Among them, three connecting elastic pieces form a set of clamping elastic piece groups. The first elastic arm is arranged on one side of the electrode to be clamped, and the second elastic arm and the third elastic arm are arranged on the other side of the electrode to be clamped. The second elastic arm, the first elastic arm, and the third elastic arm are arranged staggered along the width direction of the connecting elastic piece, and two adjacent elastic arms are engaged with each other; there is a gap between two adjacent elastic arms.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] The contact part of the connecting elastic piece is provided with a pressing convex block, and the transverse and longitudinal heights of the pressing convex block are smoothly tapered, so that when the electrode to be connected is inserted from top to bottom, it is easier to insert and is convenient for assembly; the pressing convex block is located at the transverse center of the contact part, and the force against the electrode is more concentrated, enhancing the firmness of clamping and improving the connection stability between the connecting elastic piece and the biological electrode; the elastic arm of the connecting elastic piece provides a certain degree of assembly flexibility for the contact part. At the same time, one end of the elastic arm connected to the fixing frame is provided with a bent part, and the bent part enables the elastic arm to provide a supporting force for the end connected to the contact part, so that the contact part will not be deformed excessively, improving the connection stability between the connecting elastic piece and the electrode; the transverse width of the elastic arm gradually decreases, saving materials and reducing costs.

[0022] In the electrode connection structure, the connecting elastic pieces are located on different sides of the electrode to be connected, improving the connection stability between the connecting elastic piece and the electrode; the elastic arms in the clamping elastic piece group are arranged staggered along the width direction of the connecting elastic piece, and two adjacent elastic arms are engaged with each other, reducing the overall volume of the clamping elastic piece group, making the volume of the electrode connection structure smaller, and at the same time improving the connection stability between the connecting elastic piece and the electrode. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a connecting elastic piece of the present utility model;

[0024] Figure 2 is a schematic structural diagram of the XZ plane of a connecting elastic piece of the present utility model;

[0025] Figure 3 is a schematic structural diagram of the XY plane of a connecting elastic piece of the present utility model;

[0026] Figure 4 is a schematic structural diagram of a set of clamping elastic piece groups of the present utility model;

[0027] Figure 5 is a schematic structural diagram of an electrode connection structure of the present utility model, including a set of clamping elastic piece groups (formed by two connecting elastic pieces) for clamping the electrode;

[0028] Figure 6This is a schematic diagram of another angle of the electrode connection structure of the present utility model, which includes a set of clamping elastic piece groups (composed of two connecting elastic pieces) for clamping the electrode;

[0029] Figure 7 This is a schematic diagram of the structure of an electrode connection structure of the present utility model, which includes a set of clamping elastic piece groups (composed of three connecting elastic pieces).

[0030] In the figure: 01 - connecting elastic piece; 02 - clamping elastic piece group; 1 - fixing frame; 11 - connecting part; 12 - supporting side wall; 13 - mounting part; 2 - elastic arm; 21 - second arc arm; 22 - third inclined arm; 23 - third arc arm; 24 - fourth inclined arm; 3 - abutting part; 31 - pressing convex block; 311 - pressing beam; 32 - hook arm; 321 - first inclined arm; 322 - first arc bending arm; 323 - second inclined arm. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] The embodiments of the present utility model provide a technical solution:

[0033] Please refer to the attached Figures 1 - 7 , where Figure 1 is a schematic diagram of the structure of a connecting elastic piece. Specifically: The present application provides a connecting elastic piece 01, which includes a fixing frame 1 and an elastic arm 2 connected to each other. One end of the elastic arm 2 is fixedly connected to the fixing frame 1, and the other end of the elastic arm 2 is provided with an abutting part 3 for abutting and connecting the electrode;

[0034] The abutting part 3 includes a pressing convex block 31 and a hook arm 32. The pressing convex block 31 is arranged on the outer side of the hook arm 32; the hook arm 31 extends inward in a bent manner.

[0035] Specifically, the pressing convex block 31 in the abutting part 3 abuts against the surface of the electrode. The pressing convex block 31 is located at the horizontal center of the abutting part 3, and the force against the electrode is more concentrated, enhancing the firmness of clamping and improving the connection stability between the connecting elastic piece 01 and the electrode.

[0036] Please refer to the attached Figure 2 and Figure 3, in this embodiment, the hook arm 32 includes a first inclined arm 321, a first arc-shaped bending arm 322, and a second inclined arm 323 that are sequentially connected. The first inclined arm 321 is connected to the elastic arm 2. The first inclined arm 321 is inclined outward, the first arc-shaped bending arm 322 is bent inward, and the second inclined arm 323 is inclined inward. The first inclined arm 321, the first arc-shaped bending arm 322, and the second inclined arm 323 are sequentially connected to form a hook shape;

[0037] The pressing bump 31 is arranged on the outer sides of the first inclined arm 321, the first arc-shaped bending arm 322, and the second inclined arm 323 and is connected to the electrode to be connected; the pressing bump 31 extends along the extending direction of the hook arm 32 and is in a strip shape.

[0038] Please refer to the appendix Figures 1 - 3 In this embodiment, the second inclined arm 323 is inclined towards the fixing frame 1, and the two ends on both sides of the end of the second inclined arm 323 away from the first arc-shaped bending arm 322 are chamfered. Specifically, the second inclined arm 323 is inclined towards the fixing frame 1 to prevent excessive bending when the pressing part 3 is connected to the electrode, and at the same time prevent the electrode or other components from being hooked and damaging other components.

[0039] Please refer to the appendix Figure 3 , in this embodiment, the middle part of the pressing bump 31 in the long direction bulges outward to form a pressing beam 311;

[0040] The heights on both sides of the pressing beam 311 in the transverse direction gradually decrease; with the pressing beam 311 as the boundary, the height of the pressing bump 31 in the longitudinal direction gradually decreases; the heights of the pressing bump in the transverse and longitudinal directions change smoothly and gradually, making it easier to insert when the electrode to be connected is inserted from top to bottom, facilitating assembly; the pressing beam 311 protruding in the long direction of the pressing bump 31 also plays a role in guiding the assembly of the electrode to be connected, enabling the electrode to be assembled along the direction of the pressing beam 311.

[0041] In this embodiment, the midpoint of the pressing bump 31 in the transverse direction is within the range of 0 to 20% of the width of the contact part 3 on both sides of the midpoint of the contact part 3 in the transverse direction. The midpoint of the pressing bump 31 in the transverse direction can be within 0% of the width of the contact part 3, can be 10%, or can be 20%; specifically, the midpoint of the pressing bump 31 in the transverse direction is located on the midpoint of the contact part 3 in the transverse direction, and the pressing bump is located at the transverse center of the contact part, making the force on the electrode more concentrated and enhancing the firmness of clamping.

[0042] In this embodiment, the elastic arm 2 includes a second arc arm 21, a third inclined arm 22, a third arc arm 23, and a fourth inclined arm 24 that are connected in sequence; the second arc arm 21 is connected to the fixing frame 1, and the fourth inclined arm 24 is connected to the abutting portion 3; the second arc arm 21 bends outward, the third inclined arm 22 extends obliquely upward, the third arc arm 23 bends inward, and the fourth inclined arm 24 extends obliquely downward. The second arc arm 21 and the third inclined arm 22 form a supporting and fixing arm, so that the elastic arm 2 will not be overly squeezed during assembly, and the height is uncontrollable, providing a certain degree of assembly flexibility for the abutting portion 3, so that the abutting portion 3 will not be overly deformed, and improving the connection stability between the connecting elastic sheet 01 and the electrode.

[0043] In this embodiment, the width of the fourth inclined arm 24 gradually decreases from the end connected to the third arc arm 23 to the end connected to the abutting portion 3. The width of the fourth inclined arm 24 gradually decreases, reducing the hardware cost, while increasing the clamping force of the elastic arm 2, further improving the connection stability of the connecting elastic sheet 01 and the clamping elastic sheet group 02 to the electrode to be connected, and clamping the electrode to be connected more firmly.

[0044] In this embodiment, the fixing frame 1 includes a connecting portion 11, two supporting side walls 12, and a mounting portion 13; the two sides of the connecting portion 11 are respectively connected to the supporting side walls 12, and the mounting portion 13 is arranged at the bottom of the supporting side walls 12; one end of the connecting portion 11 is connected to the supporting section 12;

[0045] Specifically, the supporting side walls 12 are respectively bent and extended downward on both sides of the connecting portion 11; the mounting portions 13 are respectively bent and extended horizontally relative to the lower parts of the supporting side walls 12.

[0046] A through groove 131 is provided between the mounting portions 13 arranged oppositely in the horizontal direction, and the through groove longitudinally penetrates the opposite mounting portions 13. The fixing frame 1 only needs to be bent to form, which is convenient for production and manufacturing; if there is no through groove 131 between the mounting portions 13, when welding the mounting portions 13 to the circuit board or other components to be connected, external gas is likely to be generated at the connection, causing the local mounting portion 13 to float relative to the portion to be connected, resulting in insufficient connection between the mounting portion 13 and the circuit board or other components to be connected and easy detachment. By providing the through groove, when welding the mounting portions 13, the air is discharged through the through groove, enabling the mounting portions 13 to be in full contact with the portion to be connected, and improving the connection reliability.

[0047] Please refer to the attached Figures 1 - 6 , this application provides an electrode connection structure, including two or more connecting elastic sheets 01 disclosed in the above embodiment; at least one connecting elastic sheet 01 and another connecting elastic sheet 01 are located on different sides of the electrode to be connected.

[0048] Please refer to the attached Figures 1 - 4 Level attachment Figure 7, this application provides an electrode connection structure, including more than three connection elastic pieces 01 disclosed in the above embodiments; among them, three connection elastic pieces 01 form a set of clamping elastic piece groups 02, and the three elastic arms 2 of the clamping elastic piece groups are respectively arranged on the opposite sides in the horizontal direction of the electrode to be clamped; the horizontal projection parts of the three elastic arms 2 overlap each other; there are gaps between the three elastic arms 2 pairwise;

[0049] Among them, three connection elastic pieces 01 form a set of clamping elastic piece groups 02. The first elastic arm 2 is arranged on one side of the electrode to be clamped, and the second elastic arm 2 and the third elastic arm 2 are arranged on the other side of the electrode to be clamped. The second elastic arm 2, the first elastic arm 2 and the third elastic arm 2 are arranged staggeredly along the width direction of the connection elastic piece 01, and adjacent two elastic arms 2 are engaged with each other; there is a gap between adjacent elastic arms 2.

[0050] The contact part 3 of the connection elastic piece 01 is provided with a pressing convex block 31, and the horizontal and vertical heights of the pressing convex block 31 change smoothly, so that when the biological electrode to be connected is inserted from top to bottom, it is easier to insert and convenient for assembly; the pressing convex block 31 is located at the horizontal center of the contact part 3, and the force against the biological electrode is more concentrated, enhancing the firmness of clamping and improving the connection stability between the connection elastic piece 01 and the biological electrode; the elastic arm 2 of the connection elastic piece 01 provides a certain degree of assembly flexibility for the contact part 3. At the same time, a bending part is provided at one end of the elastic arm 2 connected to the fixing frame 1, and the bending part enables the elastic arm 2 to provide a supporting force for the end connected to the contact part 3, so that the contact part 3 will not be deformed excessively, improving the connection stability between the connection elastic piece 01 and the electrode;

[0051] In the electrode connection structure, the connection elastic pieces 01 are located on different sides of the biological electrode to be connected, so as to improve the connection stability between the connection elastic pieces 01 and the biological electrode; the elastic arms 2 in the clamping elastic piece group 02 are arranged staggeredly along the width direction of the connection elastic piece 01, and adjacent two elastic arms 2 are engaged with each other, so that the overall volume of the clamping elastic piece group 02 is reduced, making the electrode connection structure smaller in volume, and at the same time improving the connection stability between the connection elastic piece 01 and the biological electrode.

[0052] In this embodiment, a circuit board is further included, and a strip-shaped notch is provided on the surface of the circuit board, and the strip-shaped notch is used to clamp the lower part of the biological electrode to be connected;

[0053] The clamping elastic piece group 02 is arranged on the surface of the circuit board, and the mounting part 13 is welded to the surface of the circuit board;

[0054] The lower part of the biological electrode is clamped between the three elastic arms 2 of the clamping elastic piece group 02, and the three contact parts 3 press against both sides of the biological electrode;

[0055] The strip-shaped notch is provided on the side of the circuit board where the clamping elastic piece group 02 is arranged. The strip-shaped notch is located in the middle of the three elastic arms 2 of the clamping elastic piece group 02 in the transverse direction, and the strip-shaped notch extends along the longitudinal direction of the three elastic arms 2. The shape and position of the strip-shaped notch are adapted to the lower part of the biological electrode.

[0056] Since the elastic arms 2 are located on both sides of the biological electrode, one on one side and two on the other side, the pressing forces received on both sides of the biological electrode are unbalanced, which may cause deformation of the biological electrode and make the biological electrode prone to damage. After the lower part of the biological electrode passes through between the three elastic arms 2 and is stuck in the strip-shaped notch, the inner wall of the strip-shaped notch generates a supporting force in the transverse direction on the biological electrode, making the biological electrode not easily deformed.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connecting spring, characterized in that: It comprises a fixing frame (1) and an elastic arm (2) connected to each other, one end of the elastic arm (2) is fixedly connected to the fixing frame (1), and the other end of the elastic arm (2) is provided with a contact portion (3), and the contact portion (3) is used to contact an electrode; The abutment portion (3) comprises a pressure-contact convex block (31) and a hook arm (32); the pressure-contact convex block (31) is arranged on the outside of the hook arm (32); and the hook arm (32) is bent inwardly and extended.

2. The connecting spring sheet according to claim 1, characterized in that: The hook arm (32) comprises a first oblique arm (321), a first arc-shaped bent arm (322) and a second oblique arm (323) which are connected in sequence, the first oblique arm (321) is connected to the elastic arm (2), the first oblique arm (321) is inclined outwardly, the first arc-shaped bent arm (322) is bent inwardly, and the second oblique arm (323) is inclined inwardly, and the first oblique arm (321), the first arc-shaped bent arm (322) and the second oblique arm (323) are connected in sequence to form a hook shape; The pressure contact protrusion (31) is arranged on the outside of the first oblique arm (321), the first arc-shaped bent arm (322) and the second oblique arm (323); the pressure contact protrusion (31) extends along the extension direction of the hook arm (32).

3. The connecting spring sheet according to claim 2, characterized in that: The second oblique arm (323) is arranged to be inclined toward the fixing frame (1), and both sides of the end of the second oblique arm (323) away from the first arc-shaped bent arm (322) are chamfered.

4. The connecting spring sheet according to claim 2, characterized in that: The middle part of the pressure contact protrusion (31) in the long direction protrudes outward to form a pressure contact beam (311); The heights of the pressure contact beam (311) on both sides along the transverse direction gradually decrease; and the height of the pressure contact protrusion (31) along the longitudinal direction gradually decreases with the pressure contact beam (311) as a boundary.

5. The connecting spring sheet according to claim 4, characterized in that: The midpoint of the pressure-contact protrusion (31) in the transverse direction is located within a range of 0 to 20% of the width of the abutment portion (3) on both sides of the midpoint of the abutment portion (3) in the transverse direction.

6. The connecting spring sheet according to claim 1, characterized in that: The elastic arm (2) comprises a second arc-shaped arm (21), a third oblique arm (22), a third arc-shaped arm (23) and a fourth oblique arm (24) which are connected in sequence; the second arc-shaped arm (21) is connected to the fixing frame (1), and the fourth oblique arm (24) is connected to the abutting portion (3); the second arc-shaped arm (21) is bent outwardly, the third oblique arm (22) extends obliquely upwardly, the third arc-shaped arm (23) is bent inwardly, and the fourth oblique arm (24) extends obliquely downwardly.

7. The connecting spring sheet according to claim 6, characterized in that: The width from one end of the fourth oblique arm (24) connected to the third arc-shaped arm (23) to one end of the fourth oblique arm (24) connected to the abutment portion (3) is gradually reduced.

8. The connecting spring sheet according to claim 7, characterized in that: The fixing frame (1) comprises a connecting portion (11), two supporting side walls (12) and a mounting portion (13); the two sides of the connecting portion (11) are respectively connected to the supporting side walls (12), and the bottom of the supporting side wall (12) is provided with the mounting portion (13); one end of the connecting portion (11) is connected to the supporting side wall (12).

9. An electrode connection structure, characterized in that: It comprises two or more connecting spring pieces (01) as claimed in any one of claims 1 to 8; at least one of the connecting spring pieces (01) and another connecting spring piece (01) are located on different sides of the electrode to be connected.

10. An electrode connection structure, characterized in that: Comprising three or more connecting spring sheets (01) as claimed in any one of claims 1 to 8; wherein the three connecting spring sheets (01) constitute a clamping spring sheet group (02), the three elastic arms (2) of the clamping spring sheet group are respectively arranged on two opposite lateral sides of the electrode to be clamped; the lateral projections of the three elastic arms (2) overlap each other; and there are gaps between the three elastic arms (2); The three connecting spring sheets (01) form a group of clamping spring sheets (02), the first elastic arm (2) is arranged on one side of the electrode to be clamped, the second elastic arm (2) and the third elastic arm (2) are arranged on the other side of the electrode to be clamped, the second elastic arm (2), the first elastic arm (2) and the third elastic arm (2) are arranged alternately along the width direction of the connecting spring sheet (01), and two adjacent elastic arms (2) are engaged with each other; there is a gap between adjacent elastic arms (2).

Images