A clamping terminal

Abstract

The utility model relates to a clip-on terminal, comprising a terminal body configured as a conductor, the terminal body comprising a support sheet; a first spring sheet and a second spring sheet, the first spring sheet and the second spring sheet are both vertically arranged on the same side of the support sheet and are both fixedly connected to the support sheet, the first spring sheet and the second spring sheet are opposite and spaced apart, and a clamping space is formed between the first spring sheet and the second spring sheet, wherein the middle part of the first spring sheet or the second spring sheet is bent toward one side of the clamping space to form a first bent portion, and the first bent portion abuts against the middle part of the second spring sheet or the first spring sheet corresponding thereto; the utility model can not only quickly and stably clamp the motor terminal, but also reduce the breakage or deformation failure of the clip-on terminal, thereby facilitating the installation of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor connection terminals, in particular to a clamping terminal. Background Art

[0002] A motor, also known as an electric machine, refers to an electromagnetic device that converts electrical energy into mechanical energy based on the law of electromagnetic induction. Normally, the lead wires of the motor windings inside the motor can be connected to the external power line before the electrical energy can be converted into mechanical energy. An existing motor has two motor terminals (two metal sheets) as lead wires in the two through holes of the shaft extension end plate and on both sides of the motor shaft. In order to stably connect the lead wires to the external power line, an injection molded part is also provided. A metal lead frame is provided inside the injection molded part. The metal lead frame is a connecting component connecting the external power line and the motor windings inside the motor. The injection molded part needs to be fixedly covered on the shaft extension end plate of the motor, and the lead frame contacts the two motor terminals to complete conduction before electrical energy can be transmitted to the motor windings. However, the connection between the connection terminals of the existing lead frame and the motor terminals is unstable, the connection operation is relatively time-consuming, and the connection terminals are prone to breakage or deformation and failure after the motor is installed, which is not conducive to the installation of the motor. Summary of the invention

[0003] To this end, the technical problem to be solved by the utility model is to overcome the problems in the prior art that the connection terminals of the lead frame and the motor terminals are unstable, the connection operation is relatively time-consuming, and it is not conducive to the installation of the motor, and thus provide a clip-on terminal that can not only quickly and stably clamp the motor terminal, but also reduce the breakage or deformation failure of the clip-on terminal, thereby facilitating the installation of the motor.

[0004] In order to solve the above technical problems, the utility model provides a clamping terminal, including a terminal body configured as a conductor, wherein the terminal body includes:

[0005] Support sheet;

[0006] A first spring sheet and a second spring sheet, the first spring sheet and the second spring sheet are both vertically arranged on the same side of the support sheet and are both fixedly connected to the support sheet, the first spring sheet and the second spring sheet are opposite to each other and arranged at an interval, and a clamping space is formed between the first spring sheet and the second spring sheet, wherein the middle part of the first spring sheet or the second spring sheet is bent toward one side of the clamping space to form a first bending portion, and the first bending portion abuts against the middle part of the second spring sheet or the first spring sheet corresponding thereto.

[0007] In an embodiment of the present invention, the first bending portion is disposed on the first elastic sheet, and the first elastic sheet includes a first connecting portion connected to the first bending portion, and the first connecting portion is fixedly connected to the supporting sheet.

[0008] In an embodiment of the present invention, the first elastic sheet, the second elastic sheet and the supporting sheet are integrally formed and are all made of metal.

[0009] In an embodiment of the present invention, the second elastic sheet is bent toward one side of the clamping space to form a second bent portion, the second bent portion abuts against the first bent portion, and the second bent portion is fixedly connected to the second connecting portion.

[0010] In an embodiment of the present invention, the support sheet is provided with a contraction portion on a side opposite to the side connecting the first elastic sheet and the second elastic sheet.

[0011] In an embodiment of the present invention, the support sheet is provided with an extension portion on a side opposite to the contraction portion, and the first connection portion and the second connection portion are both fixedly connected to the extension portion.

[0012] In an embodiment of the present invention, the support sheet is provided with shoulders on both sides of the extension portion.

[0013] In an embodiment of the present invention, arc chamfers are provided at the joints of the first bending portion and the second bending portion.

[0014] In an embodiment of the present invention, arc chamfers are provided at the ends of the first bending portion and the second bending portion.

[0015] In an embodiment of the present invention, both the first bending portion and the second bending portion are configured as a "V"-shaped structure.

[0016] The above technical solution of the utility model has the following advantages compared with the prior art:

[0017] The clamping terminal described in the utility model is fixedly connected to the injection molded part by setting a support sheet, keeping the first spring sheet and the second spring sheet independent of the injection molded part, avoiding the first spring sheet and the second spring sheet from breaking or deforming and failing after the motor is installed, and one side of the motor terminal can also abut against the support sheet, further improving the stability of the conduction of the motor terminal; the motor terminal is inserted into and the first spring sheet and the second spring sheet are stretched open, and the motor terminal is clamped by the elastic force of the first spring sheet and the second spring sheet, that is, the motor terminal and the clamping terminal can be quickly clamped, and the motor terminal can be automatically clamped, avoiding the deformation and failure of the clamping terminal, and improving the conduction stability; the first spring sheet and the second spring sheet are arranged on the same side of the support sheet, so that the support sheet forms an avoidance space in the direction of the motor terminal, which is conducive to adjusting the insertion depth of the motor terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0019] Figure 1 It is a structural schematic diagram of the clamping terminal in the preferred embodiment of the utility model.

[0020] Figure 2 for Figure 1 The structural schematic diagram of the front view of the clamping terminal is shown.

[0021] Figure 3 for Figure 1 The schematic structural diagram of the side view of the clip-on terminal is shown.

[0022] Explanation of the markings in the drawings in the specification: 1. Contraction portion; 2. Shoulder portion; 3. Support plate; 4. Clamping space; 5. Extension portion; 6. First spring piece; 61. First bending portion; 62. First connecting portion; 7. End portion of the first spring piece; 8. Arc chamfer of the first bending portion; 9. Second spring piece; 91. Second bending portion; 92. Second connecting portion. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0024] Example

[0025] In one embodiment of the present invention, referring to Figure 1 and 2 As shown, a clamping terminal of the utility model includes a terminal body configured as a conductor, wherein the terminal body includes:

[0026] Support sheets 3, two support sheets 3 are vertically fixed in the grooves of the injection molded part and fixedly connected to the lead frame inside the injection molded part;

[0027] The first spring piece 6 and the second spring piece 9 are both vertically arranged on the same side of the support sheet 3 and are both fixedly connected to the support sheet 3. When the support sheet 3 is fixed on the injection molded part, the first spring piece 6 and the second spring piece 9 do not directly contact the injection molded part, thereby maintaining relative independence, thereby preventing the first spring piece 6 and the second spring piece 9 from deforming, failing or breaking after the motor is installed; the first spring piece 6 and the second spring piece 9 are both made of metal; the first spring piece 6 and the second spring piece 9 are arranged oppositely and at intervals, and a clamping space 4 is formed between the first spring piece 6 and the second spring piece 9, wherein the first spring piece 6 or the second spring piece 9 The middle part is bent toward one side of the clamping space 4 to form a first bending portion 61, and the first bending portion 61 abuts or is close to the middle part of the corresponding second spring piece 9 or the first spring piece 6. That is to say, in this embodiment, only one of the first spring piece 6 or the second spring piece 9 is provided with a first bending portion, and in another embodiment, the first spring piece 6 and the second spring piece 9 are both provided with bending portions. When the motor terminal is inserted between the first spring piece 6 or the second spring piece 9, the motor terminal pushes the first spring piece 6 and the second spring piece 9 to the side, and the first bending portion 61 of the first spring piece 6 and the second spring piece 9 are tightly abutted against the motor terminal by elastic force.

[0028] In one embodiment of the present invention, referring to Figure 1 As shown, the first bending portion 61 is arranged on the first spring piece 6, and the first spring piece 6 includes a first connecting portion 62 connected to the first bending portion 61, the first bending portion 61 is formed by the first spring piece 6 after multiple bendings, the first connecting portion 62 is the unbent portion of the first spring piece 6, the first connecting portion 62 is fixedly connected to the support sheet 3, and the first connecting portion 62 plays a role in supporting the first spring piece 6.

[0029] In one embodiment of the present invention, referring to Figure 1 As shown, the first elastic sheet 6, the second elastic sheet 9 and the supporting sheet 3 are integrally formed and are all made of metal materials such as copper or aluminum.

[0030] In one embodiment of the present invention, referring to Figure 1 As shown, the second spring piece 9 is bent toward one side of the clamping space 4 to form a second bending portion 91, the second bending portion 91 abuts against or is close to the first bending portion 61, and the second bending portion 91 is fixedly connected to a second connecting portion 92. Furthermore, the second spring piece 9 has the same structure as the first spring piece 6.

[0031] In one embodiment of the present invention, referring to Figure 1As shown, the support sheet 3 is provided with a contraction portion 1 on the side relative to the connection between the first elastic sheet 6 and the second elastic sheet 9. The width of the contraction portion 1 is smaller than the width of the support sheet 3. The function of the contraction portion 1 is to facilitate the stable insertion and fixation of the support sheet 3 on the injection molded part.

[0032] In one embodiment of the present invention, referring to Figure 1 and 3 As shown, the support sheet 3 is provided with an extension portion 5 on a side relative to the contraction portion 1, and the first connection portion 62 and the second connection portion 92 are fixedly connected to both sides of the extension portion 5. The extension portion 5 can ensure that after the support sheet 3 is fixed on the injection molded part, the first spring piece 6 and the second spring piece 9 do not contact the injection molded part, thereby preventing the first spring piece 6 and the second spring piece 9 from being broken or deformed and failing due to the pressure of the injection molded part.

[0033] In one embodiment of the present invention, referring to Figure 1 As shown, the support sheet 3 is provided with shoulders 2 on both sides of the extension portion 5 , and the shoulders 2 are used to enhance the structural strength of the extension portion 5 .

[0034] In one embodiment of the present invention, referring to Figure 1 As shown, the first bending portion 61 and the second bending portion 91 are both provided with an arc chamfer at the abutment point. The surface of the arc chamfer 8 is smoother than its periphery, which can reduce friction. When the motor terminal passes through the arc chamfer, the motor terminal can slide along the arc edge relative to the first bending portion 61 and the second bending portion 91, so as to prevent the motor terminal from squeezing and deforming the first spring sheet 6 and the second spring sheet 9. The arc chamfer can also prevent the first bending portion 61 and the second bending portion 91 from scratching the motor terminal.

[0035] In one embodiment of the present invention, referring to Figure 1 As shown, the end 7 of the first bend portion 61 and the end of the second bend portion 91 are both provided with an arc chamfer. When the injection molded part is covered on the shaft extension end plate, the end 7 of the first bend portion 61 and the end of the second bend portion 91 may abut against the shaft extension end plate. The arc chamfer can avoid scratching the shaft extension end plate, or the end 7 of the first bend portion 61 and the end of the second bend portion 91 may be inserted into the inner side of the shaft extension end plate along the motor terminal. The arc chamfer can reduce the risk of accidental scratching.

[0036] In one embodiment of the present invention, referring to Figure 2 As shown, the first bending portion 61 and the second bending portion 91 are both arranged as a "V"-shaped structure, which is conducive to the end 7 of the first bending portion 61 and the end of the second bending portion 91 jointly forming a "V"-shaped opening to guide the motor terminal so that the motor terminal can be accurately inserted into the clamping space 4.

[0037] The working principle of the clamping terminal of the utility model is:

[0038] The support pieces 3 of the two clip-on terminals are vertically fixed in the grooves of the injection molded part and connected to the lead frame. The injection molded part is facing and buckled on the shaft extension end plate of the motor. The two motor terminals are respectively inserted into the two clip-on terminals. After the motor terminal is inserted into the first spring piece 6 and the second spring piece 9, the first spring piece 6 and the second spring piece 9 are laterally stretched open to enter the clamping space 4. Under the action of elastic force, the first bent portion 61 and the second bent portion 91 are tightly abutted against both sides of the motor terminal in a direction perpendicular to the motor terminal. The injection molded part and the shaft extension end plate are fixedly connected by screws to complete the clipping of the motor terminal and the clip-on terminal and the installation of the motor. The external current is passed into the lead frame, and the current passes through one of the clip-on terminals and the corresponding motor terminal in turn to enter the motor winding of the motor.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A clamping terminal, comprising a terminal body configured as a conductor, characterized in that: The terminal body comprises: Support sheet; A first spring sheet and a second spring sheet, the first spring sheet and the second spring sheet are both vertically arranged on the same side of the support sheet and are both fixedly connected to the support sheet, the first spring sheet and the second spring sheet are opposite to each other and arranged at an interval, and a clamping space is formed between the first spring sheet and the second spring sheet, wherein the middle part of the first spring sheet or the second spring sheet is bent toward one side of the clamping space to form a first bending portion, and the first bending portion abuts against the middle part of the second spring sheet or the first spring sheet corresponding thereto; the support sheet forms an avoidance space in the direction of advancement of the motor terminal.

2. A clamping terminal according to claim 1, characterized in that: The first bending portion is disposed on the first elastic sheet, and the first elastic sheet includes a first connecting portion connected to the first bending portion, and the first connecting portion is fixedly connected to the supporting sheet.

3. A clamping terminal according to claim 2, characterized in that: The first spring sheet, the second spring sheet and the supporting sheet are integrally formed and are all made of metal.

4. A clamping terminal according to claim 3, characterized in that: The second elastic sheet is bent toward one side of the clamping space to form a second bent portion, the second bent portion abuts against the first bent portion, and the second bent portion is fixedly connected to the second connecting portion.

5. A clamping terminal according to claim 4, characterized in that: The support sheet is provided with a contraction portion on a side opposite to the side connecting the first elastic sheet and the second elastic sheet.

6. A clamping terminal according to claim 5, characterized in that: The support sheet is provided with an extension portion on a side opposite to the contraction portion, and the first connection portion and the second connection portion are both fixedly connected to the extension portion.

7. A clamping terminal according to claim 6, characterized in that: The support sheet is provided with shoulders on both sides of the extension portion.

8. The clamping terminal according to claim 4, characterized in that: Arc chamfers are provided at the joints of the first bending portion and the second bending portion.

9. A clamping terminal according to claim 8, characterized in that: The ends of the first bending portion and the second bending portion are both provided with arc chamfers.

10. A clamping terminal according to claim 9, characterized in that: The first bending portion and the second bending portion are both configured as a "V"-shaped structure.

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