CN110763875A - Design method of voltage test connector - Google Patents
Design method of voltage test connector Download PDFInfo
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- CN110763875A CN110763875A CN201910717209.2A CN201910717209A CN110763875A CN 110763875 A CN110763875 A CN 110763875A CN 201910717209 A CN201910717209 A CN 201910717209A CN 110763875 A CN110763875 A CN 110763875A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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Abstract
The present disclosure provides a design method of a voltage test connector, comprising the following steps: the testing device comprises a main body part and a clamping part, wherein the main body part and the clamping part are integrally manufactured, the clamping part and the main body part are connected through a movable part, and a testing part is fixed on the main body part and is used for being electrically connected with a voltage terminal; the main body part and the clamping part are designed to be flat, one end of the main body part and one end of the clamping part form a clamping opening, and the other end of the main body part and the clamping part are locked through a self-locking mechanism; carrying out stress analysis on each part, and optimizing each part by taking the minimum stress concentration as a target; through adopting flattening design, auto-lock structure, insulating material design and row structural design that ally oneself with, make voltage test joint ease for use, security, stability and commonality obtain increasing substantially, through the atress analysis and the design optimization to each part, reduced the stress that each position of each part received, improved test joint's stability.
Description
Technical Field
The invention belongs to the technical field of voltage terminal test, and particularly relates to a design method of a voltage test connector.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, the regional span of each region in China is wide, the annual span of transformer substation construction is large, and the transformer substation is constructed dozens of years ago and is also newly built. The conditions of the secondary system terminal block in the transformer substation are different from year to year, the arrangement structure, the screen assembling mode, the functional requirements, the design requirements and the like of the terminal block are improved along with the change of time, and the functions of the terminal block are more and more perfect. The occurrence of the condition brings much inconvenience to the test of the secondary equipment of the transformer substation, and the danger of the field work of the tester is increased. Patent document CN207424014U describes a voltage testing connector for voltage loop test, which improves the original testing method, mainly adopts a structure similar to a pliers, the connector includes two handles, a middle link and a pliers opening, the handle end is pressed, the pliers opening is opened, the handle end is released, the pliers opening is closed, and the voltage terminal is clamped through the opening and closing of the pliers opening, so as to achieve the purpose of voltage testing.
However, the inventor of the present disclosure found in research that the existing voltage test connector has the following problems: (1) the voltage test joint is easy to break and damage, has poor reliability and short service life; (2) the overall size of the voltage test connector is large, and the stability of the connector is insufficient due to the influence of gravity during testing, so that the test is difficult; (3) the working force of the voltage test joint depends on the elasticity of a joint spring, and the reliability needs to be improved because a locking mechanism is not arranged; (4) the voltage test connector main body is made of metal, so that potential safety hazards exist, and the service life of the voltage test connector is shortened.
Disclosure of Invention
In order to solve the defects of the prior art, the design method of the voltage test connector is provided by the disclosure, and by adopting a flattening design, a self-locking structure, an insulating material design and a row structure design, the usability, the safety, the stability and the universality of the voltage test connector are greatly improved, the stress on each position of each part is reduced through the stress analysis and the design optimization of each part, and the stability of the test connector is improved.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
a design method of a voltage test joint comprises the following steps:
the testing device comprises a main body part and a clamping part, wherein the main body part and the clamping part are integrally manufactured, the clamping part and the main body part are connected through a movable part, and a testing part is fixed on the main body part and is used for being electrically connected with a voltage terminal;
the main body part and the clamping part are designed to be flat, one end of the main body part and one end of the clamping part form a clamping opening, and the other end of the main body part and the clamping part are locked through a self-locking mechanism;
and analyzing stress of each part, and optimizing each part by taking the minimum stress concentration as a target.
As some possible implementations, the main body part and the clamping part are designed in a wide body row, and at least one test part is arranged on each row of the main body part and used for realizing the simultaneous test of a plurality of voltage terminals.
As a further limitation, the body part and the clamping part are designed in a wide four-in-one row, with one test part per row.
As a further limitation, the body member and the clamping member are made of a lightweight insulating resilient material having both strength and toughness.
As a further limitation, the body member and the clamping member are integrally manufactured by a 3D printing method.
As some possible implementations, the test component vertically penetrates through the main body component and is fixedly connected with the main body component through a screw thread, a portion of the test component, which penetrates through the test component, is used for electrically connecting with the voltage terminal, and a portion of the test component, which does not penetrate through the test component, is used for leading out the voltage of the voltage terminal to other test equipment.
As some possible implementation manners, the self-locking structure adopts a buckle type self-locking mechanism, the buckle type self-locking mechanism comprises two parts which are matched with each other, one part is integrally formed with the other end of the main body part, the other part is integrally formed with the other end of the clamping part, and the main body part and the clamping part are locked through the matching of the two parts of the buckle type self-locking mechanism, so that the voltage terminal is locked.
By way of further limitation, the fastening part rotates around the rotating shaft within a certain angle, when one end of the fastening part is pressed downwards, the clamping openings of the fastening part and the main body part are clamped towards the middle, when one end of the fastening part is pressed to a certain degree, the self-locking structure of the fastening part and the self-locking mechanism on the main body part are locked, and the voltage test connector is naturally clamped on the voltage terminal.
As some possible implementations, the main body part and the clamping part are designed to be flattened in a manner of half-surrounding the voltage terminals, so that the center of gravity of the voltage test connector is lowered to be infinitely close to the center of gravity of the terminal strip for realizing the closest fit with the terminal strip.
As some possible realization modes, the main body part adopts a hook-shaped structure which is completely attached to the voltage terminal, and a clamping opening is formed between the hook-shaped end part of the main body part and one end of the fastening part.
As some possible implementation modes, stress analysis is carried out on each part, and a smooth curved surface design is adopted for each part to replace a right-angle design so as to reduce stress of each part.
As a further limitation, the fracture analysis of the parts is carried out on each part by using an extended finite element method, and the right-angle corner of each part is optimized by combining the stress analysis result.
Compared with the prior art, the beneficial effect of this disclosure is:
1. according to the design method, the flattening design, the self-locking structure, the insulating material design and the row structure design are adopted, so that the usability, the safety, the stability and the universality of the voltage test connector are greatly improved, the stress on each position of each part is reduced through the stress analysis of each part, and the stability of the test connector is improved.
2. According to the design method, the center of gravity of the voltage test connector is lowered by adopting the flattening design method, the closer the center of gravity of the terminal strip is, the better the stability of the voltage test connector is, the tighter the adhesion of the voltage test connector to the terminal strip is, the better the stability of the voltage test connector is, and therefore the flattening design structure which surrounds the voltage terminal in a half mode is adopted, the center of gravity of the voltage test connector is lowered to the minimum, the adhesion of the test connector to the terminal strip is the best and the adhesion of the test connector to the terminal strip is the tightest, and the reliability of equipment is improved.
3. According to the design method, the weight of the left part of the voltage test connector is reduced as much as possible by adopting the light material and simplifying the structure of the fastening part, the influence of the left part on the gravity center of the whole voltage test connector is reduced by optimally designing the whole structure, the influence caused by gravity center deviation is far smaller than the design requirement, and the influence is reduced to the lowest.
Drawings
Fig. 1 shows a first usage of the voltage test connector according to embodiment 1 of the present disclosure.
Fig. 2 shows a second usage of the voltage test connector according to embodiment 1 of the present disclosure.
Fig. 3 illustrates a third use of the voltage test connection according to example 1 of the present disclosure.
Fig. 4 is a flowchart of a design method of a voltage test connector according to embodiment 1 of the present disclosure.
Fig. 5 is a schematic view of a voltage test connector structure according to embodiment 1 of the disclosure.
Fig. 6 is a front view of a main body component structure of the voltage test connector according to embodiment 1 of the present disclosure.
FIG. 7 is a top view of the main body component of the voltage test connector according to embodiment 1 of the present disclosure
Fig. 8 is a front view of a clamping member structure of a voltage test connection according to embodiment 1 of the present disclosure.
Fig. 9 is a top view of a clamping member structure of a voltage test connection according to embodiment 1 of the present disclosure.
Fig. 10 is a schematic structural diagram of a testing component of the voltage testing connector according to embodiment 1 of the present disclosure.
Fig. 11 is a schematic structural diagram of a voltage testing connector with a cam mechanism according to embodiment 1 of the present disclosure.
Fig. 12 is a force analysis diagram of the voltage test connector according to embodiment 1 of the present disclosure.
Fig. 13 is a force analysis diagram of the voltage testing connector with the right-angle structure according to embodiment 1 of the present disclosure.
Fig. 14-16 are force analysis graphs of voltage test connector points E and F as described in example 1 of the present disclosure.
Fig. 17 is a force distribution diagram from point E to point F according to example 1 of the present disclosure.
1-a body part; 2-a first end of the body member; 3-a second end of the body member; 4-a clamping member; 5-a first clamping part; 6-a second clamping part; 7-a third clamping part; 8-clamping the first end of the part; 9-clamping the second end of the part; 10-a first projection; 11-a second projection; 12-a test part; 13-a first included angle; 14-a second included angle; 15-a second component; 16-a first component; 17-voltage terminal; 18-axis of rotation.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The voltage test connector can be divided into three main types according to the use environment:
(1) the voltage test connector is horizontally arranged, as shown in fig. 1, namely, the voltage terminal row is in a horizontal mode, the test surface faces upwards, the gravity center of the voltage test connector is arranged at the physical center of the voltage test connector, and the gravity of the voltage test connector vertically acts on the voltage terminal, so that the voltage test connector can easily realize stable and reliable test effect.
(2) The voltage test connection is placed vertically as shown in fig. 2, i.e. the voltage terminal block is arranged horizontally, with the front side of the voltage terminal block perpendicular to the ground, in such a way that the gravitational force of the voltage test connection is perpendicular to the ground along the centre line of the test connection. In this case, the voltage test connection is subjected to a shear stress with respect to the voltage terminal block.
(3) The voltage test connection is placed vertically sideways as shown in fig. 3, i.e. the voltage terminal block is placed vertically, with the front side of the voltage terminal block being laterally perpendicular to the ground. In this case, the gravity of the voltage test connection is perpendicular to the ground along the lateral center line. In this case, the voltage test terminal also has a shear stress with respect to the voltage terminal.
Through investigation and research, when the secondary equipment of the transformer substation is tested, the third test condition is the most, so how to reduce stress and improve the stability and reliability of a test joint is a technical problem which needs to be solved urgently at present.
Example 1:
as shown in fig. 4, embodiment 1 of the present disclosure provides a method for designing a voltage testing connector, which includes the following steps:
integrally manufacturing a main body part and a clamping part, connecting the clamping part and the main body part through a movable part, and fixing a test part on the main body part for electrically connecting with a voltage terminal;
the main body part and the clamping part are designed to be flat, one end of the main body part and one end of the clamping part form a clamping opening, and the other end of the main body part and the clamping part are locked through a self-locking mechanism;
and (4) carrying out stress analysis on each part, and optimizing each part by taking the minimum stress concentration as a target.
According to the design method described in this embodiment, the specific voltage test connector obtained is shown in fig. 5 to 11, and specifically includes:
the testing device comprises a main body part 1, a clamping part 4, a testing part 12 and a self-locking mechanism, wherein the main body part 1 is connected with the clamping part 4 through a rotating shaft 18, the main body part 1 and the clamping part 4 respectively comprise a first end and a second end, and a clamping port is formed by the first end 2 of the main body part and the first end 8 of the clamping part 4 and is used for clamping a voltage terminal 17; the test component 12 is fixed on the main body component 1 and is used for realizing electrical connection with the voltage terminal 17 so as to test the voltage terminal 17; the self-locking mechanism comprises a first part 16 and a second part 15, the first part 16 is arranged at the second end 9 of the clamping part 4, the second part 15 is arranged at the second end 3 of the main body part 1, and the first part 16 and the second part 15 are matched for use to realize the locking of the second end 3 of the main body part and the second end 9 of the clamping part.
A first protruding part 10 and a second protruding part 11 are respectively arranged on two sides of the voltage terminal, the main body part 1 is in a hook-shaped structure attached to the voltage terminal 17, and the first end 2 of the main body part is a hook-shaped end part; during clamping, the hook-shaped end portion is attached to the outer surface of the first protruding portion 10, the position between the rotating shaft 18 and the hook-shaped end portion on the main body member 1 is attached to the surface of the terminal block on which the voltage terminal port is opened, and the first end 8 of the clamping member 4 is attached to the outer surface of the second protruding portion 11. Through the hook structure who adopts laminating voltage terminal comprehensively, in-service use, can realize fast with voltage terminal's close combination, realized voltage test joint's stability and ease for use requirement.
The clamping component 4 comprises a first clamping part 5, a second clamping part 6 and a third clamping part 7, one end of the first clamping part 5 is a hook-shaped end part of the clamping component 4, the position, close to the middle, of the first clamping part 5 is movably connected with the main component 1 through a rotating shaft 18, and the other end of the first clamping part 5 and the second clamping part 6 are integrally connected in a first included angle 13; the other end of the second clamping part 6 is integrally connected with one end of a third clamping part 7 in a second included angle 14, a first part 16 is arranged at the other end of the third clamping part 7, and the first part 16 and the third clamping part 7 are integrally formed; the main body member 1 is of an integrally formed structure, and the second member 15 is integrally formed with the second end 3 of the main body member 1. The main body part and the clamping part are manufactured and molded integrally respectively, so that the difficulty in stress concentration and assembly caused by the process problem of a split structure is avoided.
The first included angle is not less than 90 degrees, the second included angle is not more than 90 degrees, and the inner surface and the outer surface of the clamping component 4 at the positions of the first included angle 13 and the second included angle 14 are both cambered surfaces; the first clamping part 5 and the third clamping part 7 are positioned on one side of the second clamping part 6 to form a structure similar to a Chinese character 'men'.
The main body component 1 is movably connected with the clamping component 4 through the rotating shaft 18, the clamping component 4 can rotate around the rotating shaft 18 within a certain angle, when the second end 9 of the clamping component is pressed downwards, the clamping component 4 and the clamping port of the main body structure 1 are clamped towards the middle, and further the voltage terminal 17 is clamped; when the second end of the clamping part is pressed to a certain degree, the first part 15 and the second part 14 of the self-locking mechanism are matched and locked, so that the clamping and locking of the voltage terminal 17 are realized.
The first part and the second end of the main body part are integrally formed, the second part and the second end of the clamping part are integrally formed, the self-locking mechanism is a self-locking hasp, the first part 15 is a female part of the self-locking hasp, and the second part 14 is a sub-part of the self-locking hasp.
At present, the precedent of adopting the self-locking structure on the voltage test connector is not found, the main reason is that the design rationality of the self-locking structure is difficult to guarantee, the service life of the self-locking structure is not easy to guarantee for a long time, if the requirement of reasonable structure and long service life is realized, the design from the structure to multiple aspects of materials and the like is needed, the problem is more complex, the embodiment is designed for realizing better use effect, the self-locking structure is specially designed, the front and the back experience of multiple design versions is repeatedly modified, the design rationalization is gradually realized, the simplification is realized, the reliability is improved, and the usability gradually meets the project requirements.
As shown in fig. 12, the design scheme of self-locking by using a cam mechanism is that the self-locking mechanism designed by the cam structure is divided into a plurality of parts, including an eccentric wheel structure, an elastic steel wire and the like, and through design calculation, if the above self-locking structure is to be realized, the processing precision and the assembly precision of each part are required to be higher, and the parts are more, so that the actual production and use are more difficult, and therefore, the scheme shown in fig. 8 is finally abandoned.
The test component 12 is at least one plug connector, the plug connector is vertically fixed on the second clamping portion 6 through threads, the test end of the plug connector penetrates through the second clamping portion 6 to be connected with the voltage terminal 17, and the lead end of the plug connector is connected with other test equipment. Can improve voltage test joint holistic reliability through threaded connection, make whole test joint cooperation inseparabler, more firm, can also make voltage test part inseparabler be connected with voltage terminal, increase electrically conductive reliability, also make voltage test joint's stability in the experiment better simultaneously.
The voltage testing connector is of a parallel-row wide structure, each row is fixedly provided with a plug connector for realizing simultaneous measurement of a plurality of voltage terminals, the voltage testing connector is of a four-parallel-row structure, and each row is fixedly provided with at least one plug connector for realizing simultaneous measurement of four voltage terminals; in the design process of the voltage testing connector, the row structure is subjected to various row design schemes through a plurality of processes of design, calculation, 3D drawing, stability analysis and the like of various row structures, and finally, the four row structure is selected as the most stable row structure. Through the wide body structural design of block of four rows, can test a plurality of voltage terminals simultaneously, voltage test connects and the increase of voltage terminal area of contact, it is more stable when making voltage test connect to use, reliable, a plurality of voltage terminals simultaneous test have simultaneously simplified the test procedure, it is better to test connect's ease for use, through the joint debugging structure of wide body design, can bear more equipment structure on main structure design, make test connect's commonality and scalability better.
The main body part 1, the clamping part 4 and the self-locking mechanism are all made of light insulating elastic materials with both strength and toughness, and are all designed by adopting smooth curved surfaces; the main body component and the clamping component are integrally manufactured in a 3D printing mode, and the effect of the light insulating elastic material is fully exerted.
The main body part and the clamping part are flattened by adopting a semi-surrounding mode of the voltage terminal, so that the gravity center of the voltage test connector is reduced to be infinitely close to the gravity center of the terminal strip, and the voltage test connector is used for realizing the closest fit with the terminal strip.
The flat design is compared with various design schemes: the main operating portion of the voltage test connection is on the left side of the test connection, so that the mass on the left side is greater than the mass on the right side, and the problem of a shift of the center of gravity of the voltage test connection to the left occurs in the flattened design.
After the problem appears, through comprehensive analysis, several solutions are provided: firstly, the mass on the right side of the voltage test connector is increased, so that the gravity center of the whole test connector shifts to the right and gradually recovers to the center of the terminal strip, according to the thought, through actual drawing and demonstration analysis, the fact that the gravity center of the whole voltage test connector is stable in modification according to the mode is found, the whole weight is increased, and the beneficial factors caused by gravity center recovery are completely offset by the increased weight; and the right side part of the voltage test connector becomes too bulky, so that the voltage test connector is not attractive and influences the practical use. And secondly, the size of the fastening part is reduced, so that the fastening part is made to be very small and thin, and the influence on the gravity center is reduced, but the reduction of the size of the fastening part is found through actual drawing and demonstration analysis to influence the stability of the voltage test connector in direct use, and the scheme for reducing the size is not available, so that the scheme is not preferable. And thirdly, finding a light material and simplifying the structure of the fastener, so that the mass of the left part of the voltage test joint is reduced as much as possible, determining a third design scheme by drawing and argumenting, optimally designing the whole structure, reducing the influence of a left part on the gravity center of the whole voltage test joint, and simultaneously adopting a light insulating elastic material to ensure that the influence caused by gravity center deviation is far less than the design requirement and the influence is reduced to the lowest.
Stress analysis is carried out on each part, the smooth curved surface design is adopted for replacing the right-angle design for each part so as to reduce stress of each part, the fracture analysis of each part is carried out by utilizing an extension finite element method, and the right-angle corner of each part is optimized by combining the stress analysis result, and the concrete process is as follows:
force analysis is performed on each component, as shown in fig. 13, a rectangular coordinate system is established with the contact point of the clamping component and the voltage terminal as the origin of coordinates O, and when a force F is applied to the clamping component, voltage terminal reaction forces to the left and the right are generated at the intersection point of the clamping component and the main structural component and the x axis, respectively, and the two forces act on the clamping component and the main structural component, respectively. The main stress concentration points are respectively A, B, C, D, E, H and the like through overall analysis. In order to deal with these stresses without affecting the use of the components, detailed analysis and modification of the various parts are made to minimize stress concentrations and ensure the safety of the equipment.
The initial design scheme is a right-angle scheme as shown in fig. 14, the final test result of the right-angle scheme is not ideal, the device strength of each stress point is not enough, especially the transmission key points of forces such as the point E and the point D, for example, the point E, as shown in fig. 15-16, the stress condition is similar to a hinge structure, when the point P is subjected to the force of Fb, the stress of the point E is calculated, and the calculation method is as follows:
fe’*a＝L*Fb*cos40° (1)
when the voltage secondary loop test tool is gradually locked, Fb is multiplied by cos40 degrees and gradually approaches to a fixed value, the stress distribution from the point E to the point F is shown in figure 17, the stress magnitude of the point E is determined by the magnitude of a according to the formula (2), wherein a is the horizontal distance between two bending points of the hook-shaped end part, and therefore, the stress of the point E is several times or even dozens of times of the stress of the point P.
The analysis is carried out according to an extended finite element method (XFEM), when the stress of the E point reaches a certain limit value, the E point can generate cracks along the stress direction to cause the damage of the equipment, so the E point is made into an arc shape to increase the stress stressed area, the occurrence of the cracks generated along the E point can be greatly improved, all right-angle corners are optimally designed into curved surfaces, and the reliability of the equipment is greatly improved. Each part adopts a smooth curved surface design, the stress of each part of the part is also reduced, the strength of the equipment is increased, the reliability of use is ensured, the service life is prolonged, and meanwhile, the equipment is more attractive.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (10)
1. A design method of a voltage test joint is characterized by comprising the following steps:
the testing device comprises a main body part and a clamping part, wherein the main body part and the clamping part are integrally manufactured, the clamping part and the main body part are connected through a movable part, and a testing part is fixed on the main body part and is used for being electrically connected with a voltage terminal;
the main body part and the clamping part are designed to be flat, one end of the main body part and one end of the clamping part form a clamping opening, and the other end of the main body part and the clamping part are locked through a self-locking mechanism;
and (4) carrying out stress analysis on each part, and optimizing each part by taking the minimum stress concentration as a target.
2. The method of claim 1, wherein the main body and the clamping members are arranged in a wide array, and at least one test member is disposed on each array of the main body for testing multiple voltage terminals simultaneously.
3. The method of claim 2, wherein the body member and the clamping member are arranged in a wide quad array, with one test member in each array.
4. The method of claim 3, wherein the main body member and the clamping member are made of a lightweight insulating resilient material having both strength and toughness;
furthermore, the main body component and the clamping component are integrally manufactured in a 3D printing mode.
5. The method of claim 1, wherein the test member vertically penetrates the body member and is fixedly coupled to the body member by a screw, a portion of the test member penetrating the test member is used for electrical connection with the voltage terminal, and a portion of the test member not penetrating the test member is used for leading out a voltage of the voltage terminal to other test equipment.
6. The method according to claim 1, wherein the self-locking structure is a snap-on self-locking mechanism, the snap-on self-locking mechanism comprises two parts that are engaged with each other, one part is integrally formed with the other end of the main body, the other part is integrally formed with the other end of the clamping member, and the main body and the clamping member are locked by engaging the two parts of the snap-on self-locking mechanism, thereby locking the voltage terminal.
7. The method of claim 6, wherein the fastening member is rotated about the rotation axis within a certain angle, when the tail portion of the fastening member is pressed downward, the clamping openings of the fastening member and the body member are clamped toward the middle, and when the tail portion of the fastening member is pressed to a certain extent, the self-locking structure of the fastening member and the self-locking mechanism of the body member are locked, and the voltage test contact is naturally clamped to the voltage terminal.
8. The method of claim 1, wherein the body member and the clamping member are flattened to reduce the center of gravity of the voltage test contact to infinite proximity to the center of gravity of the terminal strip for closest engagement with the terminal strip by semi-surrounding the voltage terminals;
or the main body part adopts a hook-shaped structure which is completely attached to the voltage terminal, and a clamping opening is formed between the hook-shaped end part of the main body part and one end of the fastening part.
9. The method of claim 1, wherein the stress analysis is performed on each part, and a smooth curved design is used instead of a right-angled design for each part to reduce stress at each location.
10. The method of claim 9, wherein the component fracture analysis is performed on each component by using an extended finite element method, and the right angle of each component is optimized according to the stress analysis result.
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| CN110763875B (en) | 2022-04-19 |
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