Impact device

Abstract

The utility model discloses an impact device which comprises a fixing frame used for bearing a piezoresistor disc, two discharging mechanisms which are used in cooperation and used for conducting electric shock on the piezoresistor disc are arranged on the fixing frame, and the two discharging mechanisms are symmetrically arranged up and down relative to a piezoresistor. One side of the fixing frame is provided with a driving mechanism used for driving the two discharging mechanisms to move towards each other or away from each other; the driving mechanism comprises an electric telescopic rod installed on the side, away from the discharging mechanism, of the fixing frame, a movable rod is arranged at the output end of the electric telescopic rod, and the two ends of the movable rod are each movably connected with a movable block. By starting the electric telescopic rod, the output end of the electric telescopic rod can finally drive the two electrode tips to move face to face or back to back, then only one electric telescopic rod is needed to serve as power for synchronous movement of the two electrode tips, the use number of the electric telescopic rods is effectively reduced, and therefore the purposes of saving cost and saving resources are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of varistor sheet detection equipment, in particular to an impact device. Background Art

[0002] Varistor is a type of varistor, which is an electric shock protection device made of zinc oxide nonlinear resistor element as the core. When the voltage applied across the varistor is lower than the rated voltage, the resistance of the varistor is infinite, and almost no current flows inside; when the voltage across the varistor is slightly higher than the rated voltage, it will be quickly broken down and turned on, and change from a high resistance state to a low resistance state, and the working current will also increase sharply, but it can be restored to a high resistance state later. When the voltage applied across the varistor exceeds the maximum limit voltage, the varistor is broken down by electric shock and cannot recover by itself.

[0003] The existing patent document with announcement number CN216262111U discloses an impact device for a chip varistor, including a frame, on which a discharge mechanism is provided, and the discharge mechanism is used to perform electric shock on the varistor sheet, thereby breaking down the varistor sheet with cracks or impurities, which is convenient for subsequent screening of resistance measuring instruments, easy to operate, and improves product quality.

[0004] Although the impact device of the above-mentioned chip varistor can solve the corresponding technical problems, in order to realize the movement of the positive and negative heads in the discharge mechanism toward or away from each other, two third telescopic cylinders are used to drive the positive and negative heads respectively, which not only increases the cost of use, but also increases the power consumption. For this reason, we propose an impact device. Utility Model Content

[0005] The purpose of the utility model is to provide an impact device for solving the problems raised by the above background technology.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0007] An impact device, comprising:

[0008] A fixing frame for carrying a varistor sheet, on which two discharge mechanisms for use in conjunction with each other and for shocking the varistor sheet are provided, the two discharge mechanisms being symmetrically arranged up and down with respect to the varistor, and a driving mechanism for driving the two discharge mechanisms to move toward or away from each other is provided on one side of the fixing frame;

[0009] Among them, the driving mechanism includes an electric telescopic rod installed on the side of the fixed frame away from the discharge mechanism, and a movable rod is provided at the output end of the electric telescopic rod. Both ends of the movable rod are movably connected to a movable block, and linkage components for connecting and limiting are provided between the two movable blocks and the corresponding discharge mechanisms.

[0010] As a preferred technical solution, the movable rod includes a support block fixedly connected to the output end of the electric telescopic rod, both ends of the support block are integrally formed with an inclined rod, and the two inclined rods are symmetrically arranged about the support block, and the movable block is provided with an inclined hole for the corresponding inclined rod to pass through, and the inner wall surface of the inclined hole is slidably connected to the surface of the inclined rod.

[0011] As a preferred technical solution, the linkage assembly includes a slider fixedly connected to one side of the movable block, the fixed frame is provided with a sliding hole for the slider to pass through, and the inner wall surface of the sliding hole is slidably connected to the surface of the slider.

[0012] As a preferred technical solution, grooves are provided on both sides of the surface of the slider, balls are movably embedded in the inner cavity of the grooves, and rolling grooves for the corresponding balls to roll are provided on both sides of the inner wall of the sliding hole.

[0013] As a preferred technical solution, the slider is in an I-shaped structure.

[0014] As a preferred technical solution, the discharge mechanism includes an electrode head, a support plate is fixedly connected to the side of the slider away from the movable block, a pillar is penetrated through the support plate, the electrode head is installed on one end of the pillar, and a nut is threadedly connected to the end of the pillar away from the surface of the electrode head, and the nut abuts against one side of the support plate.

[0015] As a preferred technical solution, a compression spring is sleeved on the surface of the pillar, two ends of the compression spring are respectively fixedly connected to the electrode head and the support plate, and the support plate is located between the nut and the compression spring.

[0016] As a preferred technical solution, the two electrode heads are respectively a positive electrode head and a negative electrode head.

[0017] The utility model has at least the following beneficial effects:

[0018] The beneficial effect of the utility model of the present application is that by starting the electric telescopic rod, the output end of the electric telescopic rod can eventually drive the two electrode heads to move toward or away from each other, so that only one electric telescopic rod is needed as the power for the synchronous movement of the two electrode heads, effectively reducing the number of electric telescopic rods used, thereby achieving the purpose of saving costs and resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional schematic diagram of the structure of an impact device of the utility model Figure 1;

[0020] Figure 2 A three-dimensional schematic diagram of the structure of an impact device of the utility model Figure 2 ;

[0021] Figure 3 The utility model is a three-dimensional cross-sectional schematic diagram of the connection structure of a fixing frame and a linkage assembly of an impact device.

[0022] In the figure: 1. fixing frame; 2. discharge mechanism; 21. electrode head; 22. support plate; 23. support pillar; 24. nut; 25. compression spring; 3. driving mechanism; 31. electric telescopic rod; 32. movable rod; 321. support block; 322. inclined rod; 33. movable block; 34. linkage assembly; 341. slider; 342. sliding hole; 343. groove; 344. ball; 345. rolling groove; 35. inclined hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 3 The embodiment of the utility model provides an impact device, comprising: a fixing frame 1 for carrying a varistor sheet, two discharge mechanisms 2 used in combination and used to perform electric shock on the varistor sheet, and a driving mechanism 3 for driving the two discharge mechanisms 2 to move toward or away from each other, the discharge mechanism 2 and the driving mechanism 3 are both arranged on the fixing frame 1, and the two discharge mechanisms 2 are symmetrically arranged about the varistor; the driving mechanism 3 comprises an electric telescopic rod 31 installed on the side of the fixing frame 1 away from the discharge mechanism 2, the output end of the electric telescopic rod 31 is provided with a movable rod 32, both ends of the movable rod 32 are movably connected with a movable block 33, and the two movable blocks 33 are respectively provided with a linkage component 34 for connecting and limiting with the corresponding discharge mechanism 2.

[0025] Among them, the movable rod 32 includes a support block 321 fixedly connected to the output end of the electric telescopic rod 31, and both ends of the support block 321 are integrally formed with an inclined rod 322, and the two inclined rods 322 are symmetrically arranged about the support block 321. An inclined hole 35 for the corresponding inclined rod 322 to pass through is opened on the movable block 33, and the inner wall surface of the inclined hole 35 is slidably connected to the surface of the inclined rod 322. By utilizing the inclined surface structure of the inclined rod 322 and the surface of the movable block 33, when the inclined rod 322 moves along the axial direction of the output end of the electric telescopic rod 31, the inclined rod 322 squeezes the inner wall surface of the inclined hole 35 through the inclined surface structure, and utilizes the inclined surface structure to change the force direction, thereby realizing the mutual transformation of the force direction of the movable block 33 from the horizontal direction to the vertical direction.

[0026] Among them, the linkage component 34 includes a slider 341 fixedly connected to one side of the movable block 33, and a sliding hole 342 for the slider 341 to pass through is opened on the fixed frame 1. The inner wall surface of the sliding hole 342 is slidably connected to the surface of the slider 341. The linkage component 34 can play a linkage role with the discharge mechanism 2 and the movable block 33, and at the same time, it can play a limiting role when the discharge mechanism 2 and the movable block 33 move, thereby preventing the discharge mechanism 2 and the movable block 33 from shaking.

[0027] Among them, grooves 343 are opened on both sides of the surface of the slider 341, and the inner cavity of the groove 343 is movably embedded with a ball 344. Rolling grooves 345 for the corresponding ball 344 to roll are opened on both sides of the inner wall of the sliding hole 342. When the slider 341 slides in the inner cavity of the sliding hole 342, it can drive the ball 344 to roll in the inner cavity of the rolling groove 345, which helps to reduce the friction between the slider 341 and the sliding hole 342 and improve the flexibility of the slider 341 when sliding.

[0028] The slider 341 is in an I-shaped structure, which can further improve the stability of the slider 341 when sliding in the inner cavity of the sliding hole 342 .

[0029] Among them, the discharge mechanism 2 includes an electrode head 21, and a slider 341 is fixedly connected to a support plate 22 on the side away from the movable block 33. A pillar 23 is penetrated through the support plate 22. The electrode head 21 is installed on one end of the pillar 23. The end of the pillar 23 away from the surface of the electrode head 21 is threadedly connected with a nut 24. The nut 24 abuts against one side of the support plate 22. The detachable connection between the electrode head 21 and the support plate 22 is realized through the cooperation of the pillar 23 and the nut 24.

[0030] Among them, a compression spring 25 is sleeved on the surface of the pillar 23, and the two ends of the compression spring 25 are fixedly connected to the electrode head 21 and the support plate 22 respectively, and the support plate 22 is located between the nut 24 and the compression spring 25. The compression spring 25 is used to buffer the varistor sheet, thereby reducing the possibility that the electrode head 21 will damage the varistor sheet.

[0031] The two electrode heads 21 are respectively a positive electrode head and a negative electrode head.

[0032] The working principle of the utility model is as follows: the electric telescopic rod 31 is started, and the output end of the electric telescopic rod 31 drives the support block 321 and the inclined rod 322 to move toward the fixed frame 1 along the axial direction of the output end of the electric telescopic rod 31, and the inclined rod 322 slides in the inner cavity of the inclined hole 35, and the inclined rod 322 squeezes the inner wall surface of the inclined hole 35, so that the movable block 33 moves toward the direction of the electric telescopic rod 31, and the movable block 33 drives the slider 341 to slide in the inner cavity of the sliding hole 342, and the slider 341 drives the ball 344 to roll in the inner cavity of the rolling groove 345, and the slider 341 also drives the discharge mechanism 2 to move synchronously, thereby making the two discharge mechanisms 2 move toward each other, and finally making the two electrode heads 21 both contact and discharge the varistor sheet that is difficult to be sprinkled with the fixed frame 1, and the electric shock breaks down the varistor sheet with impurities, forming a defective product that is convenient for the resistance measuring instrument to screen; at the same time, when the electrode head 21 moves toward and contacts the varistor sheet, the compression spring 25 can be forced to shrink, which helps to play a buffering role for the varistor sheet.

[0033] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An impact device, characterized in that: include: A fixing frame (1) for carrying a varistor sheet, on which are provided two discharge mechanisms (2) for use in conjunction with each other and for performing an electric shock on the varistor sheet, the two discharge mechanisms (2) being arranged symmetrically with respect to the varistor sheet, and a driving mechanism (3) for driving the two discharge mechanisms (2) to move toward or away from each other is provided on one side of the fixing frame (1); The driving mechanism (3) comprises an electric telescopic rod (31) mounted on a side of the fixing frame (1) away from the discharge mechanism (2); a movable rod (32) is provided at the output end of the electric telescopic rod (31); both ends of the movable rod (32) are movably connected to a movable block (33); and linkage components (34) for connection and limiting are provided between the two movable blocks (33) and the corresponding discharge mechanisms (2).

2. An impact device according to claim 1, characterized in that: The movable rod (32) comprises a support block (321) fixedly connected to the output end of the electric telescopic rod (31); both ends of the support block (321) are integrally formed with an inclined rod (322), and the two inclined rods (322) are symmetrically arranged with respect to the support block (321); an inclined hole (35) for the corresponding inclined rod (322) to pass through is opened on the movable block (33); and the inner wall surface of the inclined hole (35) is slidably connected to the surface of the inclined rod (322).

3. An impact device according to claim 1, characterized in that: The linkage assembly (34) comprises a sliding block (341) fixedly connected to one side of the movable block (33); a sliding hole (342) for the sliding block (341) to pass through is provided on the fixed frame (1); and an inner wall surface of the sliding hole (342) is slidably connected to a surface of the sliding block (341).

4. An impact device according to claim 3, characterized in that: Grooves (343) are provided on both sides of the surface of the sliding block (341), and a ball (344) is movably embedded in the inner cavity of the groove (343). Rolling grooves (345) for the corresponding ball (344) to roll are provided on both sides of the inner wall surface of the sliding hole (342).

5. The impact device according to claim 3, characterized in that: The sliding block (341) has an I-shaped structure.

6. An impact device according to claim 5, characterized in that: The discharge mechanism (2) comprises an electrode head (21); a side of the slider (341) away from the movable block (33) is fixedly connected to a support plate (22); a support column (23) is provided through the support plate (22); the electrode head (21) is mounted on one end of the support column (23); an end of the support column (23) away from the surface of the electrode head (21) is threadedly connected to a nut (24); and the nut (24) abuts against one side of the support plate (22).

7. An impact device according to claim 6, characterized in that: A compression spring (25) is sleeved on the surface of the support (23), and two ends of the compression spring (25) are respectively fixedly connected to the electrode head (21) and the support plate (22), and the support plate (22) is located between the nut (24) and the compression spring (25).

8. An impact device according to claim 7, characterized in that: The two electrode heads (21) are respectively a positive electrode head and a negative electrode head.

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