An electrostatic gun with an integrated gun head

Abstract

The present invention relates to the field of electromagnetic compatibility testing, and provides an electrostatic gun with an integrated gun head, including a shell, a control circuit, the control circuit is arranged in the shell, and also includes an output gun head, two discharge gun heads, and a switching mechanism. One end of the output gun head is inserted in the shell and connected to the front end of the electrostatic gun, and is electrically connected to the control circuit, and the other end is inserted in the switching mechanism, and the two discharge gun heads are inserted in the switching mechanism; by rotating the switching mechanism, the output gun head is electrically contacted with the two discharge gun heads respectively. The present invention can achieve the purpose of improving test efficiency, convenient operation, and increasing service life by arranging two discharge gun heads on the same electrostatic gun and switching the discharge gun heads through the switching mechanism; by optimizing the design of the switching structure, the purpose of convenient operation and cost saving is achieved; by arranging the shell, control circuit, display panel, battery, etc., it is convenient for users to operate.

Description

Technical Field

[0001] The invention relates to the field of electromagnetic compatibility testing, and more particularly to an electrostatic gun with an integrated gun head. Background Art

[0002] There are two types of gun heads in the electrostatic discharge test, namely the air discharge gun head and the contact discharge gun head. At present, the existing electrostatic gun discharge gun heads, air discharge heads and contact discharge heads are two independent individuals. When the operator uses the equipment, he needs to replace the gun heads alternately each time to complete the operation, which is time-consuming and laborious, and greatly reduces the test efficiency. How to switch the discharge gun heads more quickly, improve the test efficiency and convenience of operation, and extend the service life of the electrostatic gun is a problem that needs to be solved in the existing technology. Summary of the invention

[0003] The present invention aims to overcome the defects of the above-mentioned prior art such as slow switching of discharge gun tips, reduced test efficiency, inconvenient operation and short service life, and provide an electrostatic gun with an integrated gun tip for achieving the purpose of quickly switching gun tips, improving test efficiency, convenient operation and increasing service life.

[0004] The technical solution adopted by the present invention is to provide an electrostatic gun with an integrated gun head, including a shell and a control circuit, wherein the control circuit is arranged in the shell, and also includes an output gun head, two discharge gun heads, and a switching mechanism. One end of the output gun head is inserted into the shell and connected to the front end of the electrostatic gun and is electrically connected to the control circuit, and the other end is inserted into the switching mechanism, and the two discharge gun heads are both inserted into the switching mechanism; by rotating the switching mechanism, the output gun head is electrically contacted with the two discharge gun heads respectively.

[0005] In this scheme, the electrostatic gun is the discharge device of the electrostatic discharge generator, which is used to simulate whether the product will be damaged under static electricity. The gun head is the component that directly tests the product under test.

[0006] Two discharge gun heads are set up and integrated into the same electrostatic gun. When the operator uses the electrostatic gun, he can directly replace the gun head without having to disassemble the gun head and then replace another gun head. In this way, the time for replacing the gun head can be greatly shortened and the operating efficiency can be improved. Not only that, the plugging and unplugging frequency of the gun head is controlled, the wear of the gun head during plugging and unplugging is reduced, and the service life of the gun head is increased. The output gun head is electrically connected to the control circuit to ensure that the output gun head is continuously powered. The output gun head is electrically contacted with the discharge gun head, thereby continuously powering the discharge gun head. A switching mechanism is set up, and different discharge gun heads can be switched by rotating the switching mechanism. This can save the steps of plugging and unplugging the gun head, is easy to operate, and can achieve the purpose of quickly switching the gun head and improving the test efficiency.

[0007] During operation, the switching mechanism is directly rotated to make the output gun tip electrically contact with the required discharge gun tip.

[0008] Preferably, the discharge gun head includes an air discharge gun head and a contact discharge gun head. In this solution, the air discharge gun head uses a high-voltage electrostatic pulse to break through the air and transmit it to the inside of the product to cause product damage. The contact discharge gun head discharges by directly contacting the product, which can simulate the situation where human body discharge may cause product damage during production, transportation and use.

[0009] Preferably, the air discharge gun head and the contact discharge gun head are arranged perpendicularly to each other in the switching mechanism. In this solution, the frequency of alternating use of the air discharge gun head and the contact discharge gun head is relatively high, and the positions of the two are arranged perpendicularly to each other. On the one hand, it conforms to the operating habits of people, and on the other hand, during the manufacturing process, the error caused by making the two perpendicular is smaller than the error caused by making the two at an acute angle or an obtuse angle. In other words, it is relatively simple to make the two perpendicular.

[0010] Preferably, a cavity is provided inside the switching mechanism, and the output gun head and the two discharge gun heads are inserted into the cavity of the switching mechanism; when the switching mechanism is rotated, the output gun head makes electrical contact with the two discharge gun heads in the cavity. In this solution, the cavity is the place where the output gun head makes electrical contact with the two discharge gun heads, and the cavity reserves enough space for electrical contact to prevent the discharge gun heads from being set too close to each other, thereby preventing the output gun heads from being connected by mistake.

[0011] Preferably, the switching mechanism is spherical, and the cavity is eccentrically arranged in the sphere, and the two discharge guns are inserted into the cavity at different lengths. In this solution, the switching mechanism is arranged in a spherical shape, which can be suitable for rotation in any direction. The cavity is eccentrically arranged and the two discharge gun heads are inserted into the first cavity at different lengths. When the length and position of the output gun head at the front end of the electrostatic gun are fixed, when the switching mechanism rotates, it can be ensured that the output gun head can be in electrical contact with the two discharge gun heads respectively.

[0012] Preferably, the switching mechanism is further provided with a groove, which is connected to the cavity; the switching mechanism is rotated, and the output gun head rotates in the groove and makes electrical contact with the two discharge gun heads respectively. In this scheme, the groove is the activity space of the output gun head, and the output gun head can be relatively rotated in the groove by simply rotating the switching mechanism until it rotates to a position corresponding to the discharge gun head and makes electrical contact with the discharge gun head, which is simple and convenient. The groove is obtained by subtracting the switching mechanism, and there is no filler in the groove, which can save materials and reduce the weight of the switching mechanism.

[0013] Preferably, the inner wall of the groove is provided with two positioning grooves, the positioning grooves correspond to the discharge gun heads one by one and are on the same straight line, and the positioning grooves match the output gun head; the switching mechanism is rotated, and the output gun head is clamped in the positioning grooves and electrically contacts the corresponding discharge gun head. In this solution, the output gun head is directly positioned by using the combination of the positioning groove and the output gun head, and only the switching mechanism and the output gun head itself are improved, which is simple and convenient, and there is no need to spend more manpower and material resources to set and make the corresponding limit structure.

[0014] Preferably, a spring top block is provided at the front end of the output gun head, and the output gun head is connected to the spring top block through a spring, and the output gun head contacts the discharge gun head through the spring top block. In this solution, the output gun head and the two discharge gun heads are electrically contacted respectively, and the spring top block is pressed onto the discharge gun head by the elastic force of the spring, so that it can be ensured that the output gun head and the discharge gun head are not easy to fall off, and electrical contact is achieved.

[0015] Preferably, the housing includes a left cover, a right cover, and a gun head base. The left cover and the right cover have the same shape and are generally in the shape of a "T". The left cover and the right cover are symmetrically distributed on the outside of the electrostatic gun. The gun head base is connected to the left cover and the right cover and is located at the front end of the electrostatic gun. The output gun head is inserted into the gun head base; a metal pin is provided at the rear end of the gun head base, and the left cover and the right cover are provided with guide holes, and the metal pin is connected to the control circuit through the guide holes. In this scheme, the left cover and the right cover have the same shape and can be processed using the same mold or the same set of fixtures and tools, which can not only improve production efficiency, but also reduce design costs and production costs. The split structure in which the gun head base is separated from the left cover and the right cover, and the metal pin is separated from the control circuit, is used. The control circuit is connected through the metal pin provided on the gun head base, which can avoid the circuit damage during the disassembly and assembly of the gun head base, the left cover, and the right cover due to the integrated design of the control circuit and the metal pin.

[0016] Preferably, an electrostatic gun with an integrated gun head further includes a battery, a display panel, and a discharge button all connected to a control circuit, wherein the battery is provided with a battery cover, and the battery cover and the display panel are both arranged at the rear end of the electrostatic gun, and the battery cover is located below the display panel, and the discharge button is located at the front end of the electrostatic gun. In this solution, the battery supplies power to the electrostatic gun, so that the electrostatic gun can be used movably without being restricted by position and distance. The display panel can display the discharge level of the electrostatic gun, and the user can adjust the discharge level according to needs.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention arranges two discharge gun heads on the same electrostatic gun, and switches the discharge gun heads through a switching mechanism, so as to achieve the purpose of improving test efficiency, convenient operation, and increasing service life; by optimizing the design of the switching structure, the purpose of convenient operation and cost saving is achieved; by setting the outer shell, control circuit, display panel, battery, etc., it is convenient for users to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is the back view of the present invention.

[0020] Figure 3 It is a partial schematic diagram of the present invention.

[0021] Figure 4 It is a cross-sectional view of the switching mechanism 6 and the output gun head 12.

[0022] Figure 5 It is a cross-sectional view of the switching mechanism 6 and the output gun head 12. DETAILED DESCRIPTION

[0023] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0024] Example 1

[0025] This embodiment provides an electrostatic gun with an integrated gun head, including a housing, a control circuit, an output gun head 12, two discharge gun heads, and a switching mechanism 6, wherein the control circuit is disposed in the housing.

[0026] like Figure 1 and Figure 2 As shown, the housing includes a left cover 1, a right cover 2, and a gun head base 5. The left cover 1 and the right cover 2 have the same appearance and are generally in a "T" shape. The left cover 1 and the right cover 2 are symmetrically distributed on the outside of the electrostatic gun and interlock with each other, and the left cover 1 and the right cover 2 can be locked to the electrostatic gun by fasteners 17 respectively. The left cover 1 and the right cover 2 can be locked by five fasteners 17 respectively, and the left cover 1 and the right cover 2 are respectively provided with holes corresponding to the fasteners 17. The gun head base 5 is hemispherical and detachably connected to the left cover 1 and the right cover 2, and is located at the front end of the electrostatic gun.

[0027] The electrostatic gun also includes a battery, a display panel 3, and a discharge button 4, all of which are connected to the control circuit. The battery is provided with a battery cover 8, and the battery cover 8 is provided on the outer shell. The display panel 3 is oval and is located between the left cover 1 and the right cover 2; the left cover 1 and the right cover 2 are both provided with openings, and the through hole formed by the opening of the left cover 1 and the opening of the right cover 2 matches the outline of the display panel 3. The display panel 3 displays the level of electrostatic discharge, such as +2KV, +4KV, +6KV, etc. The display panel 3 is also located at the rear end of the electrostatic gun, and the battery cover 8 is located below the display panel 3. The discharge button 4 is located at the front end of the electrostatic gun, and the discharge switch of the electrostatic gun can be controlled by the discharge button 4.

[0028] The lower end of the electrostatic gun is also provided with a cable 7, and the lower end of the shell is provided with a lead hole. The cable 7 is connected to the control circuit through the lead hole. The cable 7 is connected to the external power supply and is complementary to the battery. The battery can be a rechargeable battery or a storage battery. When the external power supply is suddenly disconnected, the battery can continue to supply power to the electrostatic gun to avoid a sudden interruption of the electrostatic gun during the test.

[0029] like Figure 3 As shown, a metal pin 14 is provided at the rear end of the gun head base 5, and both the left cover 1 and the right cover 2 are provided with guide holes, and the metal pin 14 is connected to the control circuit through the guide holes.

[0030] like Figure 4 and Figure 5 As shown, the discharge gun head may include an air discharge gun head 9 and a contact discharge gun head 10, but is not limited to the air discharge gun head 9 and the contact discharge gun head 10. The air discharge gun head 9 and the contact discharge gun head 10 are arranged in the switching mechanism 6 perpendicularly to each other.

[0031] A cavity 15 is provided inside the switching mechanism 6, and the cross-section of the cavity 15 can be rectangular or circular, preferably rectangular. In this way, the air discharge gun head 9 and the contact discharge gun head 10 are respectively arranged on the short side and the long side of the rectangle, so that the air discharge gun head 9 and the contact discharge gun head 10 can be determined to be perpendicular to each other.

[0032] The switching mechanism 6 is spherical, and the cavity 15 is eccentrically arranged in the sphere. The output gun head 12, the air discharge gun head 9, and the contact discharge gun head 10 are all inserted into the cavity 15 of the switching mechanism 6. The lengths of the output gun head 12, the air discharge gun head 9, and the contact discharge gun head 10 inserted into the cavity 15 are different, and the length of the air discharge gun head 9 is greater than the length of the contact discharge gun head 10. The switching mechanism 6 is also provided with a groove 16, and the groove 16 is connected to the cavity 15. The inner wall of the groove 16 is provided with a plurality of positioning grooves 11, and the positioning grooves 11 correspond to the air discharge gun head 9 and the contact discharge gun head 10 one by one and are on the same straight line. The positioning groove 11 matches the output gun head 12, and a protrusion that can match the positioning groove 11 can be provided on the output gun head 12.

[0033] One end of the output gun head 12 is inserted into the gun head base 5 and connected to the front end of the electrostatic gun, and can be electrically connected to the control circuit through the metal pin 14, and the other end is inserted into the switching mechanism 6. A spring top block 13 is provided at the front end of the output gun head 12, and the output gun head 12 is connected to the spring top block 13 through a spring, and the output gun head 12 contacts the discharge gun head through the spring top block 13. The upper end surface of the spring top block 13 is an arc surface, and the mating surfaces of the air discharge gun head 9 and the contact discharge gun head 10 with the spring top block 13 are also set as arc surfaces, so that it is convenient to switch different gun heads.

[0034] During operation, the switching mechanism 6 is rotated, the output gun head 12 is locked in the locking groove 11 and electrically contacts the air discharge gun head 9 or the contact discharge gun head 10, the test level is adjusted through the display panel, and the discharge button 4 is pressed to test the product to be tested.

[0035] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An electrostatic gun with an integrated gun head, comprising a housing and a control circuit, wherein the control circuit is arranged in the housing, and characterized in that: It also comprises an output gun head (12), two discharge gun heads, and a switching mechanism (6); one end of the output gun head (12) is inserted into the housing and connected to the front end of the electrostatic gun and is electrically connected to the control circuit, and the other end is inserted into the switching mechanism (6); the two discharge gun heads are both inserted into the switching mechanism (6); by rotating the switching mechanism (6), the output gun head (12) is electrically contacted with the two discharge gun heads respectively.

2. The electrostatic gun with an integrated gun head according to claim 1, characterized in that: The discharge gun head comprises an air discharge gun head (9) and a contact discharge gun head (10).

3. The electrostatic gun with an integrated gun head according to claim 2, characterized in that: The air discharge gun head (9) and the contact discharge gun head (10) are arranged vertically in the switching mechanism (6).

4. The electrostatic gun with an integrated gun head according to claim 1, characterized in that: A cavity (15) is provided inside the switching mechanism (6), and the output gun head (12) and the two discharge gun heads are inserted into the cavity (15) of the switching mechanism (6); when the switching mechanism (6) is rotated, the output gun head (12) is electrically contacted with the two discharge gun heads in the cavity (15).

5. The electrostatic gun with an integrated gun head according to claim 4, characterized in that: The switching mechanism (6) is spherical, and the cavity (15) is eccentrically arranged inside the sphere, and the two discharge gun heads are inserted into the cavity (15) to different lengths.

6. An electrostatic gun with an integrated gun head according to claim 4 or 5, characterized in that: The switching mechanism (6) is further provided with a groove (16), and the groove (16) is connected to the cavity (15); when the switching mechanism (6) is rotated, the output gun head (12) rotates in the groove (16) and respectively makes electrical contact with the two discharge gun heads.

7. The electrostatic gun with an integrated gun head according to claim 6, characterized in that: The inner wall of the groove (16) is provided with two locking grooves (11), the locking grooves (11) correspond to the discharge gun heads one by one and are on the same straight line, and the locking grooves (11) fit with the output gun head (12); when the switching mechanism (6) is rotated, the output gun head (12) is locked in the locking grooves (11) and is in electrical contact with the corresponding discharge gun head.

8. The electrostatic gun with an integrated gun head according to claim 1, characterized in that: A spring top block (13) is provided at the front end of the output gun head (12); the output gun head (12) is connected to the spring top block (13) via a spring; and the output gun head (12) contacts the discharge gun head via the spring top block (13).

9. The electrostatic gun with an integrated gun head according to claim 1, characterized in that: The shell comprises a left cover (1), a right cover (2), and a gun head base (5); the left cover (1) and the right cover (2) have the same appearance and are generally in a "T" shape; the left cover (1) and the right cover (2) are symmetrically distributed on the outside of the electrostatic gun; the gun head base (5) is connected to the left cover (1) and the right cover (2) and is located at the front end of the electrostatic gun; the output gun head (12) is inserted into the gun head base (5); a metal pin (14) is provided at the rear end of the gun head base (5); the left cover (1) and the right cover (2) are both provided with guide holes; the metal pin (14) is connected to the control circuit through the guide holes.

10. The electrostatic gun with an integrated gun head according to claim 1, characterized in that: The electrostatic gun further comprises a battery, a display panel (3), and a discharge button (4) all connected to the control circuit; the battery is provided with a battery cover (8); the battery cover (8) and the display panel (3) are both arranged at the rear end of the electrostatic gun, and the battery cover (8) is located below the display panel (3); and the discharge button (4) is located at the front end of the electrostatic gun.

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