Connecting structure of contact terminal assembly and connecting piece and power supply equipment

Abstract

The embodiment of the utility model provides a connecting structure of a contact terminal assembly and a connecting piece and power supply equipment. The contact terminal assembly comprises a contact terminal, the contact terminal is provided with a clamping hole, and the clamping hole comprises a first hole wall and a second hole wall which are opposite in the transverse direction. The connecting sheet comprises a sheet-shaped body, wherein the sheet-shaped body comprises an outer side edge and an inner side edge which are opposite in the longitudinal direction; the protruding part extends in the longitudinal direction from the middle of the inner side edge; the clamping part extends out from the protruding part to the first side of the sheet-shaped body, and the clamping part is configured to be suitable for being inserted into the clamping hole and clamped between the first hole wall and the second hole wall; and the bending part extends from the middle part of the outer side edge of the sheet-shaped body to the second side of the sheet-shaped body, and the bending part is configured to be used for connecting an electric wire.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to a contact terminal assembly, a connecting structure of a connecting tab, and a power supply device. BACKGROUND

[0002] Generally, a contact terminal of a power supply device (for example, a commonly used power supply and / or an emergency power supply) is inserted into a plug-in hole of a power supply device housing, and is welded with a static contact located inside the power supply device housing through a flexible connection. In the related art, a connecting tab is inserted into the plug-in hole, and the connecting tab is tightly clamped between a hole wall of the plug-in hole and a surface of the contact terminal to provide a voltage signal to other components (for example, a control unit of a dual automatic transfer switch device) through an electric wire. In order to ensure reliable contact of the connecting tab and the contact terminal, it is necessary to reduce manufacturing errors and assembly errors of the power supply device housing, the contact terminal, and the connecting tab as much as possible, and therefore the processing technology of the power supply device housing, the contact terminal, and the connecting tab is required to be relatively high, which is not conducive to reducing the cost of the power supply device. SUMMARY

[0003] An object of the present disclosure is to provide a contact terminal assembly, a connecting structure of a connecting tab, and a power supply device to at least partially solve the above problems.

[0004] In a first aspect of the present disclosure, a contact terminal assembly and a connecting structure of a connecting tab are provided, the contact terminal assembly comprising a contact terminal, the contact terminal being provided with a clamping hole, the clamping hole comprising first and second hole walls opposite in a transverse direction; and the connecting tab comprising: a tab-shaped body, the tab-shaped body comprising an outer side and an inner side opposite in a longitudinal direction; a protruding portion extending from a middle portion of the inner side in the longitudinal direction; a clamping portion extending from the protruding portion to a first side of the tab-shaped body, and the clamping portion being configured to be inserted into the clamping hole and clamped between the first and second hole walls; and a bent portion extending from a middle portion of the outer side of the tab-shaped body to a second side of the tab-shaped body, and the bent portion being configured to connect an electric wire.

[0005] In some embodiments, the contact terminal assembly further comprises a static contact and a connecting portion, the static contact being connected to the contact terminal through the connecting portion, and the contact terminal assembly is an integrally formed piece.

[0006] In some embodiments, the protruding portion comprises first and second side edges opposite in the transverse direction; and the clamping portion comprises: a first clamping protrusion extending from the first side edge of the protruding portion to the first side of the tab-shaped body for abutting against the first hole wall; and a second clamping protrusion extending from the second side edge of the protruding portion to the first side of the tab-shaped body for abutting against the second hole wall.

[0007] In some embodiments, the first clamping protrusion is provided with a first guide portion extending obliquely from a side of the first clamping protrusion away from the sheet-shaped body, and the second clamping protrusion is provided with a second guide portion extending obliquely from a side of the second clamping protrusion away from the sheet-shaped body.

[0008] In some embodiments, the inner side of the sheet-shaped body is spaced apart from the clamping portion in the longitudinal direction.

[0009] In some embodiments, the clamping hole comprises, in sequence in the longitudinal direction, a sliding portion, a guide portion and a clamping portion, and wherein a transverse distance between the first hole wall and the second hole wall corresponding to the sliding portion is equal to a transverse length of the clamping portion, the first hole wall and the second hole wall corresponding to the guide portion are beveled, and the first hole wall and the second hole wall corresponding to the clamping portion are in interference fit with the clamping portion.

[0010] In some embodiments, both ends of the outer side of the sheet-shaped body are provided with first protrusions extending in the longitudinal direction, and / or both ends of the inner side of the sheet-shaped body are provided with second protrusions extending in the longitudinal direction.

[0011] In some embodiments, the bending portion is provided with a connecting hole.

[0012] In a second aspect of the present disclosure, a power supply device is provided, comprising: a housing formed with an inner cavity and a plug-in hole communicating with the inner cavity; and a contact terminal assembly and a connecting structure of a connecting sheet according to the first aspect of the present disclosure, wherein the contact terminal is arranged in the plug-in hole, and the sheet-shaped body is clamped between a surface of the contact terminal and a hole wall of the plug-in hole.

[0013] In some embodiments, the housing is provided with a slot communicating with the plug-in hole, a transverse length of the slot is greater than or equal to a transverse length of the clamping portion, and the transverse length of the slot is less than a transverse length of the sheet-shaped body.

[0014] In the contact terminal assembly and the connecting structure of the connecting sheet provided by the embodiments of the present disclosure, the clamping hole is arranged on the contact terminal, the clamping portion capable of being inserted into the clamping hole is arranged on the sheet-shaped body of the connecting sheet, and reliable contact between the contact terminal and the connecting sheet is achieved through interference fit between the clamping hole and the clamping portion. By controlling the size of the connecting sheet and the contact terminal, reliable contact between the contact terminal and the connecting sheet can be ensured, the requirement for the processing technology is greatly reduced, and the cost is reduced.

[0015] It should be understood that the content described in this part is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above-described and other features, advantages, and aspects of the present disclosure will become more apparent as various embodiments of the present disclosure are described in greater detail below. In the drawings, like reference numerals refer to like elements throughout the several views of the drawings:

[0017] Figure 1 A partial cross-sectional structure of a power supply device according to an embodiment of the present disclosure is shown, which includes a partial housing and a connection structure of a contact terminal assembly and a connection tab according to an embodiment of the present disclosure installed in the housing;

[0018] Figure 2 A partial top view of the contact terminal assembly in Figure 1 is shown;

[0019] Figure 3 A top view of the connection tab in Figure 1 is shown;

[0020] Figure 4 A perspective view of the connection tab shown in Figure 3 is shown; and

[0021] Figure 5 and Figure 6 A mounting process of the connection tab shown in Figure 3 is shown. DETAILED DESCRIPTION

[0022] Preferred embodiments of the present disclosure will be described herein below with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0023] The term "comprising" and variations thereof as used herein are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Unless specifically stated, the term "or" as used herein refers to at least one, but can include all of the options. The term "based on" is intended to mean "based, at least in part, on." The terms "one example embodiment" and "an embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "a first," "a second," etc. can refer to different or the same objects.

[0024] As described above, the contact terminal of the power supply device is inserted into the insertion hole of the power supply device shell, and in the related art, a connecting piece is inserted between the hole wall of the insertion hole of the contact terminal and the surface of the contact terminal to allow the connecting piece to provide a voltage signal to other components through a wire. In order to ensure reliable contact between the connecting piece and the contact terminal, the insertion hole, the contact terminal, and the connecting piece need to be manufactured and assembled as much as possible to reduce manufacturing and assembly errors, and therefore the processing requirements of the power supply device shell, the contact terminal, and the connecting piece are relatively high, which is not conducive to reducing the cost of the power supply device. Embodiments of the present disclosure provide a contact terminal assembly, a connecting piece connection structure, and a power supply device. The scheme of the embodiments of the present disclosure helps to reduce the processing requirements of the shell, the contact terminal, and the connecting piece, and thus reduces the cost of the device (for example, the power supply device) having the connection structure. In the following, the position relationship between the contact terminal assembly 10, the connecting piece 20, and the shell 30 in the power supply device will be described in detail. Figures 1 to 6 The principles of the present disclosure are described.

[0025] Figure 1 A partial cross-sectional structure of a power supply device according to an embodiment of the present disclosure is shown, which includes a partial shell 30 and a contact terminal assembly and a connecting piece connection structure according to an embodiment of the present disclosure mounted on the shell 30. In order to clearly show the position relationship between the contact terminal assembly 10, the connecting piece 20, and the shell 30 in the power supply device, Figure 1 Only a partial shell of the power supply device is shown in Figure 2 A partial top view of the contact terminal assembly 10 in Figure 1 is shown. Figure 3 A top view of the connecting piece 20 in Figure 1 is shown. Figure 4 A perspective view of the connecting piece 20 shown in Figure 3 is shown. Figure 5 and Figure 6 A process of mounting the connecting piece 20 into the insertion hole 301 of the shell 30 of the power supply device shown in Figure 3 is shown. In order to clearly show the mounting process of the connecting piece 20, Figure 5 and Figure 6 Only a partial shell 30 is shown in

[0026] Referring to Figure 1 , the shell 30 of the power supply device is formed with an inner cavity 302 and an insertion hole 301 communicating with the inner cavity 302. The contact terminal assembly 10 includes a contact terminal (also referred to as a copper bar) 11, a static contact 12, and a connecting portion 13, the static contact 12 is mounted in the inner cavity 302, and the static contact 12 is connected to the contact terminal 11 through the connecting portion 13. The contact terminal 11 has a portion exposed outside the shell 30 from the insertion hole 301 and out of the inner cavity 302. The connecting piece 20 is inserted into the insertion hole 301 to be connected to the contact terminal 11, and the connecting piece 20 can provide a voltage signal to other components through a wire.

[0027] Referring to Figure 2 , the contact terminal 11 is provided with a clamping hole 110 extending in the longitudinal direction L. The clamping hole 110 includes a first hole wall 1101 and a second hole wall 1102 opposite in the transverse direction W. In the present embodiment, the transverse direction W is substantially perpendicular to the longitudinal direction L, and the longitudinal direction L is parallel to the extension direction of the plug-in hole 301. The extension direction of the plug-in hole 301 can also be considered as the direction in which the connecting tab 20 is inserted into and pulled out of the plug-in hole 301.

[0028] Referring to Figure 3 and Figure 4 , the connecting tab 20 is an integrally formed piece, for example, but not limited to, an integrally stamped and formed piece. The connecting tab 20 includes a tab-shaped body 21, a clamping portion 22, and a bent portion 23, a protruding portion 25.

[0029] The tab-shaped body 21 includes an outer side 211 and an inner side 212 opposite in the longitudinal direction L. When the connecting tab 20 is plugged into the plug-in hole 301, the outer side 211 of the tab-shaped body 21 is further away from the inner cavity 302 of the housing 30 than the inner side 212. The tab-shaped body 21 is used to be plugged into the plug-in hole 301 and clamped between the surface of the contact terminal 11 and the hole wall of the plug-in hole 301 (see Figure 1 ).

[0030] The protruding portion 25 extends from the middle of the inner side 212 in the longitudinal direction L.

[0031] The clamping portion 22 extends from the protruding portion 25 to the first side of the tab-shaped body 21, and the clamping portion 22 is configured to be adapted to be inserted into the clamping hole 110 and clamped between the first hole wall 1101 and the second hole wall 1102. In some embodiments, the clamping portion 22 is located at the end of the protruding portion 25, spaced apart from the inner side 212 of the tab-shaped body 21 in the longitudinal direction L, to facilitate processing of the connecting tab 20.

[0032] The bent portion 23 extends from the middle of the outer side 211 of the tab-shaped body 21 to the second side of the tab-shaped body 21, and the bent portion 23 is configured for connecting an electric wire. More specifically, the bent portion 23 is provided with a connecting hole 230, which can be connected with the electric wire for collecting voltage, for example, by welding. In some embodiments, the bent portion 23 forms an acute angle with the tab-shaped body 21.

[0033] The process of installing the connecting tab 20 into the plug-in hole 301 of the housing 30 of the power supply device will be described below in conjunction with Figure 1 , Figure 5 and Figure 6 .

[0034] Referring to Figure 1 and Figure 5The shell 30 is provided with a slot 303 communicating with the insertion hole 301, which is adapted to accommodate the bent portion 23. The transverse length W4 of the slot 303 is greater than or equal to the transverse length W3 of the clamping portion 22 (the transverse length W3 is shown in Figure 3 ). In addition, the transverse length W4 of the slot 303 is less than the transverse length W5 of the sheet body 21. It can be understood that the transverse length W4 of the slot 303 is less than the transverse length of the insertion hole 301.

[0035] When the connecting tab 20 is installed, the clamping portion 22 is inserted into the clamping hole 110 through the slot 303, and the sheet body 21 abuts against the surface of the contact terminal 11. In some embodiments, after the clamping portion 22 is inserted into the clamping hole 110, the clamping portion 22 and the clamping hole 110 can be in interference fit. Then the connecting tab 20 is pushed to the right, the clamping portion 22 slides in the clamping hole 110 until the sheet body 21 is inserted into the insertion hole 301, and the connecting tab 20 is installed in place. In some embodiments, the movement stroke of the sheet body 21 in the insertion hole 301 can be limited by limiting the length of the clamping hole 110 in the longitudinal direction L.

[0036] When the connecting tab 20 is installed in place, the sheet body 21 of the connecting tab 20 is clamped between the surface of the contact terminal 11 and the hole wall of the insertion hole 301, limiting the connecting tab 20 from being detached from the contact terminal 11. At the same time, the clamping portion 22 is in interference fit with the clamping hole 110, achieving reliable contact between the connecting tab 20 and the contact terminal 11.

[0037] In the prior art, a spring is provided on the sheet body of the connecting tab, and when the sheet body is inserted into the insertion hole, the spring on the sheet body deforms to reliably contact the surface of the contact terminal, thereby achieving reliable contact between the connecting tab and the contact terminal. In order to ensure reliable contact between the connecting tab and the contact terminal, the gap size between the hole wall of the insertion hole and the surface of the contact terminal in the height direction H of the insertion hole is very important. In order to control the size of the gap, the contact terminal and the static contact are generally manufactured separately, and then positioned on the shell respectively, and then connected together by soft bonding welding to form a contact terminal assembly. However, the cost of the contact terminal assembly composed of soft bonding welding is relatively high, and in order to control the size of the gap between the hole wall of the insertion hole and the surface of the contact terminal in the height direction H, the requirement for the processing technology is also relatively high, which is not conducive to reducing the cost.

[0038] The contact terminal assembly 10 and the connecting piece 20 provided by the embodiments of the present disclosure are connected in the following manner. The contact terminal 11 is provided with a clamping hole 110. The connecting piece 20 is provided with a clamping portion 22 which can be inserted into the clamping hole 110. The clamping hole 110 and the clamping portion 22 are in interference fit, so that the contact terminal 11 and the connecting piece 20 are in reliable contact. By controlling the size of the connecting piece 20 and the contact terminal 11, the reliable contact between the contact terminal 11 and the connecting piece 20 can be ensured, the requirement for the processing technology is greatly reduced, and the cost is reduced.

[0039] In addition, because the reliable contact between the contact terminal 11 and the connecting piece 20 is achieved by controlling the gap size between the hole wall of the insertion hole 301 and the surface of the contact terminal 11 in the height direction H of the insertion hole 301, the contact terminal 11, the connecting portion 13 and the fixed contact 12 of the contact terminal assembly 10 can be integrally formed, which is further conducive to reducing the cost.

[0040] Referring back to Figures 2 to 4 Exemplary embodiments of the clamping portion 22 and the clamping hole 110 are shown in the embodiments of the present disclosure.

[0041] Specifically, the protruding portion 25 includes a first side edge 251 and a second side edge 252 which are opposite in the transverse direction W. The clamping portion 22 can include a first clamping protrusion 221 and a second clamping protrusion 222. The first clamping protrusion 221 extends from the first side edge 251 of the protruding portion 25 to the first side of the sheet-shaped body 21, so as to abut against the first hole wall 1101. The second clamping protrusion 222 extends from the second side edge 252 of the protruding portion 25 to the first side of the sheet-shaped body 21, so as to abut against the second hole wall 1102. The first clamping protrusion 221 and the second clamping protrusion 222 are, for example, bent pieces extending from the protruding portion 25. The first clamping protrusion 221 and the second clamping protrusion 222 are, for example, opposite to each other in the transverse direction W.

[0042] The clamping hole 110 includes a sliding portion 110a, a guiding portion 110b and a clamping portion 110c which are connected in sequence in the longitudinal direction L. The transverse distance W1 between the first hole wall 1101 and the second hole wall 1102 corresponding to the sliding portion 110a is equal to the transverse length W3 of the clamping portion 22. It should be noted that the transverse length W3 is slightly smaller than the transverse distance W1, which is also within the protection scope of the present disclosure. The first hole wall 1101 and the second hole wall 1102 corresponding to the guiding portion 110b are bevel-shaped. The transverse distance W2 between the first hole wall 1101 and the second hole wall 1102 corresponding to the clamping portion 110c is slightly smaller than the transverse length W3 of the clamping portion 22.

[0043] The clamping hole 110 has the above configuration, so that the installation of the connecting piece 20 is more easily operated. Specifically, referring back to Figure 5 and Figure 6By way of reference Figure 2 When the connecting piece 2 is installed, the clamping portion 22 can be easily inserted into the sliding portion 110a through the slot 303. During the process of inserting the sheet-shaped body 21 into the insertion hole 301, the first clamping protrusion 221 and the second clamping protrusion 222 first slide in the sliding portion 110a along the first hole wall 1101 and the second hole wall 1102, and then are easily slid into the clamping portion 110c after being guided by the guide portion 110b. At this time, the first clamping protrusion 221 is tightly fitted (i.e., interference fit) with the first hole wall 1101, and the second clamping protrusion 222 is tightly fitted (i.e., interference fit) with the second hole wall 1102, so that the clamping portion 110c is interference fit with the clamping portion 22, thereby ensuring reliable contact between the connecting piece 20 and the contact terminal 11.

[0044] In some embodiments, the first clamping protrusion 221 can further be provided with a first guide portion 223 extending obliquely from the side of the first clamping protrusion 221 away from the sheet-shaped body 21. The second clamping protrusion 222 is provided with a second guide portion 224 extending obliquely from the side of the second clamping protrusion 222 away from the sheet-shaped body 21. The first guide portion 223 can cooperate with the first hole wall 1101 at the guide portion 110b, and the second guide portion 224 can cooperate with the second hole wall 1102 at the guide portion 110b, so as to more easily guide the clamping portion 22 into the clamping portion 110c.

[0045] Referring back to Figure 3 and Figure 4 In some embodiments, both ends of the outer side edge 211 of the sheet-shaped body 21 are provided with first protruding portions 2111 extending in the longitudinal direction L. Both ends of the inner side edge 212 of the sheet-shaped body 21 are provided with second protruding portions 2121 extending in the longitudinal direction L. By providing the first protruding portions 2111 and the second protruding portions 2121, the area of the sheet-shaped body 21 clamped between the surface of the contact terminal 11 and the hole wall of the insertion hole 301 can be increased, which is conducive to increasing the resistance of the connecting piece 20 to being pulled out of the insertion hole 301.

[0046] The contact terminal assembly and the connecting structure of the connecting piece provided by the embodiments of the present disclosure have the following advantages. The clamping hole 110 is arranged on the contact terminal 11, and the clamping portion 22 capable of being inserted into the clamping hole 110 is arranged on the sheet-shaped body 21 of the connecting piece 20. Reliable contact between the contact terminal 11 and the connecting piece 20 can be achieved through interference fit between the clamping hole 110 and the clamping portion 22. Thus, reliable contact between the contact terminal 11 and the connecting piece 20 can be ensured by controlling the size of the connecting piece 20 and the contact terminal 11, which greatly reduces the requirement for the machining process and is conducive to reducing the cost. In addition, the installation operation of the connecting piece 20 is convenient and simple, and the connection between the connecting piece 20 and the contact terminal 11 is reliable. The structure of the connecting piece 20 itself is simple, and the cost is low.

[0047] In addition, because reliable contact of the contact terminal 11 and the connecting piece 20 is achieved by avoiding the gap size in the height direction H of the insertion hole 301 of the hole wall of the insertion hole 301 and the surface of the contact terminal 11, this allows the contact terminal 11, the connecting portion 13, and the stationary contact 12 of the contact terminal assembly 10 to be integrally formed, further advantageously reducing costs.

[0048] Embodiments of the disclosure have been described above, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical application, or technical improvement in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A connecting structure of a contact terminal assembly and a connecting tab, characterized in that, the contact terminal assembly (10) comprises a contact terminal (11) provided with a clamping hole (110) comprising first and second hole walls (1101, 1102) opposite in a transverse direction (W); and the connecting tab (20) comprises: a tab body (21) comprising opposite outer and inner side edges (211, 212) in a longitudinal direction (L); a protruding portion (25) extending from a middle portion of the inner side edge (212) in the longitudinal direction (L); a clamping portion (22) extending from the protruding portion (25) to a first side of the tab body (21) and configured to be inserted into the clamping hole (110) and clamped between the first and second hole walls (1101, 1102); and a bent portion (23) extending from a middle portion of the outer side edge (211) of the tab body (21) to a second side of the tab body (21) and configured for connecting an electric wire.

2. The connection structure according to claim 1, characterized in that The contact terminal assembly (10) further comprises a stationary contact (12) and a connecting portion (13) connecting the contact terminal (11) and the stationary contact (12), and the contact terminal assembly (10) is an integral piece. 3.The connecting structure according to claim 1, characterized in that, the protruding portion (25) comprises first and second side edges (251, 252) opposite in the transverse direction (W); and the clamping portion (22) comprises: a first clamping protrusion (221) extending from the first side edge (251) of the protruding portion (25) to the first side of the tab body (21) for abutting against the first hole wall (1101); and a second clamping protrusion (222) extending from the second side edge (252) of the protruding portion (25) to the first side of the tab body (21) for abutting against the second hole wall (1102). 4.The connecting structure according to claim 3, characterized in that, the first clamping protrusion (221) is provided with a first guide portion (223) extending obliquely from a side edge of the first clamping protrusion (221) away from the tab body (21); and the second clamping protrusion (222) is provided with a second guide portion (224) extending obliquely from a side edge of the second clamping protrusion (222) away from the tab body (21).

5. The connection structure according to claim 1, wherein The inner side edge (212) of the tab body (21) is spaced apart from the clamping portion (22) in the longitudinal direction (L). 6.The connecting structure according to any one of claims 1 to 5, characterized in that, the clamping hole (110) comprises, in the longitudinal direction (L), a sliding portion (110a), a guide portion (110b) and a clamping portion (110c) connected in sequence, and the sliding portion (110a) comprises a first sliding surface (110a1) and a second sliding surface (110a2) opposite in the transverse direction (W); and the guide portion (110b) comprises a first guide surface (110b1) and a second guide surface (110b2) opposite in the transverse direction (W); and the clamping portion (110c) comprises a first clamping surface (110c1) and a second clamping surface (110c2) opposite in the transverse direction (W). Wherein, a transverse distance (W1) between the first hole wall (1101) and the second hole wall (1102) corresponding to the sliding part (110a) is equal to a transverse length (W3) of the clamping part (22), the first hole wall (1101) and the second hole wall (1102) corresponding to the guiding part (110b) are bevel-shaped, and the first hole wall (1101) and the second hole wall (1102) corresponding to the clamping part (110c) are in interference fit with the clamping part (22).

7. The connecting structure according to claim 1, wherein, Two ends of the outer side edge (211) of the sheet-shaped body (21) are provided with first protruding parts (2111) extending in the longitudinal direction (L), and / or, Two ends of the inner side edge (212) of the sheet-shaped body (21) are provided with second protruding parts (2121) extending in the longitudinal direction (L).

8. The connection structure according to claim 1, wherein The bent part (23) is provided with a connecting hole (230).

9. A power supply device, characterized by comprising: Comprise: A housing (30) formed with an inner cavity (302) and a plug-in hole (301) communicating with the inner cavity (302); and The contact terminal assembly and the connecting structure of the connecting sheet according to any one of claims 1 to 8, wherein the contact terminal (11) is arranged in the plug-in hole (301), and the sheet-shaped body (21) is clamped between the surface of the contact terminal (11) and the hole wall of the plug-in hole (301).

10. The powered device of claim 9, wherein, The housing (30) is provided with a slot (303) communicating with the plug-in hole (301), a transverse length (W4) of the slot (303) is greater than or equal to a transverse length (W3) of the clamping part (22), and the transverse length (W4) of the slot (303) is less than a transverse length (W5) of the sheet-shaped body (21).

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