Impact testing device

Abstract

The utility model relates to the technical field of testing devices, in particular to an impact testing device which comprises a workbench, a back plate and a drop testing module, the drop testing module comprises a supporting frame, a movable frame, a connecting piece, a first carrier, a second carrier and a locking mechanism, the back plate is arranged on the workbench, and the supporting frame is arranged on the back plate; the movable frame is slidably arranged on the supporting frame in the vertical direction. The connecting piece is fixed on the movable frame; the first carrier is used for positioning a to-be-tested product; the second carrier is arranged on the workbench and located below the first carrier, and the second carrier is used for positioning the impact target piece; the locking mechanism is arranged on the movable frame and used for locking or unlocking the relative positions of the first carrier and the connecting piece. The position of the movable frame relative to the supporting frame in the vertical direction is adjustable, so that the position of the movable frame relative to the supporting frame in the vertical direction can be adjusted according to the falling height required by the product to be tested, and the application range of the impact testing device can be effectively expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to an impact testing device. Background Art

[0002] During the use of electronic products, accidental drops and collisions can easily cause damage to the electronic products. Therefore, in order to ensure product quality, during the production and development of electronic products, it is necessary to use impact testing equipment to test the electronic products for drops, collisions, and impacts. Based on the test results, the product quality is evaluated and guidance is provided for product quality improvement.

[0003] The impact testing device provided in the related art usually fixes the product (or heavy object) at a set height, and then allows the product (or heavy object) to fall freely onto other impacted objects (or products) to detect the relevant quality parameters of the product. However, in this testing device, the drop height of the product (or heavy object) is usually fixed, which means that when it is necessary to detect the relevant quality parameters of the product under different impact forces, multiple testing devices need to be configured to correspond to different drop heights. Therefore, the scope of application of the impact testing device in the related art is limited. Utility Model Content

[0004] The purpose of the utility model is to provide an impact testing device so as to improve the application scope of the impact testing device.

[0005] The utility model provides an impact test device, which includes a workbench, a back plate arranged on the workbench, and a drop test module, wherein the drop test module includes:

[0006] A support frame, arranged on the back plate;

[0007] A movable frame, the position of which is adjustable relative to the supporting frame in the vertical direction;

[0008] A first carrier, used to position the product to be tested;

[0009] A second carrier is disposed on the workbench and below the first carrier, and the second carrier is used to position the impact target part; and

[0010] A connecting member, arranged on the movable frame;

[0011] The locking mechanism is arranged on the movable frame and is used to lock or unlock the relative position of the first carrier and the connecting member.

[0012] As a preferred technical solution of the impact testing device, the connecting member is provided with a guide hole extending in a vertical direction, the first carrier comprises a guide column and a receiving box, the guide column is slidably inserted into the guide hole, the receiving box is fixed to the bottom end of the guide column, and the receiving box is used to receive the product to be tested;

[0013] The first carrier also includes a limit pin arranged on the guide column, and the connecting member is also provided with a limit hole extending in a vertical direction and connected to the guide hole, and the limit pin is inserted in the limit hole and can slide along the limit hole.

[0014] As a preferred technical solution for the impact testing device, the containing box includes a box body and a box cover arranged on the box body, the box cover is located below the box body, the box body and the box cover are arranged to form a containing cavity for containing the product to be tested, the box cover is provided with an opening connected to the containing cavity, and the opening is used to expose the collision contact part of the product to be tested.

[0015] As a preferred technical solution for the impact testing device, the locking mechanism includes a locking drive fixed to the movable frame, and a locking pin transmission-connected to the locking drive, the locking pin is passed through the limiting hole, the guide column is located below the locking pin, the locking drive can drive the locking pin to extend into the guide hole and plug into the guide column, and the locking drive can also drive the locking pin to withdraw from the guide hole.

[0016] As a preferred technical solution of the impact testing device, the impact testing device also includes:

[0017] A lifting drive mechanism is arranged on the support frame, the lifting drive mechanism is in driving connection with the movable frame, and the lifting drive mechanism can drive the movable frame to reciprocate in the vertical direction;

[0018] An upper limiter is arranged on the support frame in an adjustable manner along the vertical direction. The upper limiter is located above the movable frame and can abut against the movable frame to limit the upward movement of the movable frame.

[0019] As a preferred technical solution of the impact testing device, the upper limit member includes a micrometer.

[0020] As an optimal technical solution for the impact testing device, the drop test module also includes a lower limiting mechanism, which is adjustable in the vertical direction on the back plate, is located below the movable frame, and can abut against the movable frame to limit the downward movement of the movable frame.

[0021] As a preferred technical solution of the impact testing device, the lower limiting mechanism includes a connecting seat and a lower limiting member, wherein:

[0022] The connection seat and the back plate are adjustable in vertical position; and / or,

[0023] The lower limiting member and the connecting seat are adjustable in position along the vertical direction.

[0024] As a preferred technical solution of the impact testing device, the support frame is arranged on the back plate in an adjustable manner along the vertical direction.

[0025] As a preferred technical solution of the impact testing device, the drop test module further includes a first scale provided on the back plate, and a first pointer provided on the support frame, wherein the first pointer points to the first scale.

[0026] As an optimal technical solution for the impact testing device, the second carrier includes a positioning plate and a plurality of positioning shafts arranged at intervals, the positioning plate is supported on the workbench, and the positioning plate is provided with a positioning groove for positioning the impact target part, the positioning shaft is fixed to the positioning plate, and the positioning shaft is plugged into the workbench.

[0027] As a preferred technical solution of the impact testing device, the drop test module further includes a second scale ruler arranged on the support frame, and a second pointer arranged on the movable frame, and the second pointer points to the second scale ruler.

[0028] The impact testing device provided by the utility model has at least the following beneficial effects:

[0029] The impact test device includes a workbench, a back plate and a drop test module, and the drop test module includes a support frame, a movable frame, a connecting piece, a first carrier, a second carrier and a locking mechanism. The back plate is arranged on the workbench, and the support frame is arranged on the back plate; the movable frame is slidably arranged on the support frame along the vertical direction; the connecting piece is fixed to the movable frame; the first carrier is used to position the product to be tested; the second carrier is arranged on the workbench and is located below the first carrier, and the second carrier is used to position the impact target part; the locking mechanism is arranged on the movable frame, and the locking mechanism is used to lock or unlock the relative position of the first carrier and the connecting piece. Since the position of the movable frame relative to the support frame in the vertical direction is adjustable, the position of the movable frame relative to the support frame in the vertical direction can be adjusted according to the drop height required by the product to be tested, which can effectively improve the application range of the impact test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the impact testing device in the embodiment of the utility model;

[0031] Figure 2It is a side view of the impact testing device in the embodiment of the utility model;

[0032] Figure 3 It is a partial structural schematic diagram of the impact testing device in the embodiment of the utility model;

[0033] Figure 4 The schematic diagram of the partial structure of the drop test module in the embodiment of the utility model is as follows: Figure 1 ;

[0034] Figure 5 It is an exploded view of a part of the structure of the drop test module in the embodiment of the utility model;

[0035] Figure 6 The schematic diagram of the partial structure of the drop test module in the embodiment of the utility model is as follows: Figure 2 ;

[0036] Figure 7 This is a schematic diagram of the structure of the lower limit mechanism in the embodiment of the utility model;

[0037] Figure 8 An exploded view of a second carrier and an impact target member in an embodiment of the present utility model;

[0038] Fig. 9 Schematic diagram of the internal structure of the workbench in the embodiment of the utility model.

[0039] In the figure:

[0040] 100. Workbench; 110. Electric control box;

[0041] 200, back plate; 210, guide pin; 220, threaded hole;

[0042] 300, drop test module;

[0043] 400, product to be tested; 410, collision contact part;

[0044] 500, impact target part; 600, power supply; 700, protective cover shell;

[0045] 1. Support frame; 101. Waist-shaped hole;

[0046] 2. Movable frame; 201. T-slot;

[0047] 3. Lifting drive mechanism; 301. Lifting cylinder; 302. Connector;

[0048] 4. Upper limiter;

[0049] 5. Connecting piece; 501. Guide hole; 502. Limiting hole;

[0050] 6. first carrier; 601. guide column; 6011. slot; 602. receiving box; 6021. box body; 6022. box cover; 6023. receiving cavity; 6024. opening; 603. stop pin;

[0051] 7. Second carrier; 701. Positioning plate; 7011. Positioning groove; 702. Positioning shaft; 703. Bearing;

[0052] 8. Locking mechanism; 801. Locking drive member; 802. Locking pin; 803. Support block;

[0053] 9. Slide rail; 10. Sliding block; 11. Adjusting bolt; 12. First scale ruler; 13. First pointer;

[0054] 14. Lower limit mechanism; 1401. Connecting seat; 1402. Lower limit member; 1403. Mounting hole; 1404. Hydraulic damping;

[0055] 15. Second scale ruler; 16. Second pointer. DETAILED DESCRIPTION

[0056] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0057] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0058] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0060] This embodiment provides an impact testing device, which is specifically used to make the product to be tested fall freely onto a matching product used with it, so as to simulate the placement force when a user places the product to be tested on the matching product.

[0061] For details, please refer to Figures 1 to 5 , the impact test device includes a workbench 100, a back plate 200 and a drop test module 300. The drop test module 300 includes a support frame 1, a movable frame 2, a connecting member 5, a first carrier 6, a second carrier 7 and a locking mechanism 8. Among them, the back plate 200 is arranged on the workbench 100, the support frame 1 is arranged on the back plate 200; the movable frame 2 is slidably arranged on the support frame 1 along the vertical direction; the connecting member 5 is fixed to the movable frame 2; the first carrier 6 is used to position the product to be tested 400; the second carrier 7 is arranged on the workbench 100 and is located below the first carrier 6, and the second carrier 7 is used to position the impact target part 500; the locking mechanism 8 is arranged on the movable frame 2, and the locking mechanism 8 is used to lock or unlock the relative position of the first carrier 6 and the connecting member 5.

[0062] In this embodiment, the vertical direction is Figure 1 The direction indicated by the arrows ab in the middle, and the left and right directions are as follows Figure 1 The direction indicated by the arrow cd in the middle, the front and rear directions are as follows Figure 1 The direction indicated by the arrow ef.

[0063] The impact testing device provided in this embodiment has an adjustable position of the movable frame 2 relative to the support frame 1 in the vertical direction. Therefore, the position of the movable frame 2 relative to the support frame 1 in the vertical direction can be adjusted according to the required drop height of the product 400 to be tested, thereby effectively improving the application scope of the impact testing device.

[0064] In this embodiment, the product to be tested 400 is an electronic product with a wireless charging function; the impact target 500 is a wireless charger for wirelessly charging the electronic product. The impact test device provided in this embodiment can be used to simulate the placement force when a user places an electronic product with a wireless charging function on a wireless charger.

[0065] In other embodiments, the impact target part 500 can also be set to an object of a set material such as a wooden board, a tile, a cement board, an asphalt board, a metal board, etc., to simulate the scene in which the product to be tested 400 falls onto an object of a set material; or, the product to be tested 400 is replaced by a heavy object, and the impact target part 500 is replaced by the product to be tested 400, to simulate the scene in which a heavy object hits the product to be tested 400, or the product to be tested 400 is squeezed.

[0066] Optionally, the impact testing device further comprises a lifting drive mechanism 3 and an upper limit member 4, wherein the lifting drive mechanism 3 is arranged on the support frame 1 and is transmission-connected with the movable frame 2, and the lifting drive mechanism 3 can drive the movable frame 2 to reciprocate in the vertical direction; the upper limit member 4 is arranged on the support frame 1 in an adjustable position in the vertical direction, and the upper limit member 4 is located above the movable frame 2 and can abut against the movable frame 2 to limit the upward movement of the movable frame 2. In such a configuration, the movable frame 2 can be driven to move in the vertical direction by the lifting drive mechanism 3 to adjust the position of the movable frame 2 relative to the support frame 1. In other embodiments, a plurality of connection holes spaced apart in the vertical direction can also be provided on the support frame 1, and the relative position of the movable frame 2 relative to the support frame 1 in the vertical direction can also be adjusted by the connection member passing through the movable frame 2 and cooperating with one of the plurality of connection holes.

[0067] Specifically, in this embodiment, the lifting drive mechanism 3 can drive the movable frame 2 to rise and fall in the vertical direction so that the movable frame 2 has an initial position and a retracted position. When the movable frame 2 is at the initial position, the movable frame 2 abuts against the upper limit member 4. At this time, the relative position of the first carrier 6 and the connecting member 5 is locked by the locking mechanism 8. The height of the product 400 to be tested from the impact target member 500 is the falling height of the product 400 to be tested (such as Figure 2 As shown in FIG. 4 , since the upper limit member 4 and the support frame 1 are adjustable in the vertical direction, the initial position of the movable frame 2 can be adjusted by adjusting the position of the upper support frame 1 relative to the support frame 1, and then the specific value of the drop height can be adjusted, which can meet the different test height requirements of the product 400 to be tested and has a wider range of applications.

[0068] In addition, when the movable frame 2 is located at the initial position, the relative positions of the first carrier 6 and the connecting member 5 are unlocked by the locking mechanism 8, and the first carrier 6 and the product to be tested 400 will fall freely to the impact target part 500, and then the movable frame 2 can be driven to move to the retracted position by the lifting mechanism. At this time, the heights of the locking mechanism 8 and the first carrier 6 are matched, and the relative positions of the first carrier 6 and the connecting member 5 can be locked. Then, the movable frame 2 can be driven back to the initial position by the lifting mechanism to facilitate the next cycle of drop test, which can replace manual retraction of the first carrier 6.

[0069] In this embodiment, the upper limit member 4 includes a micrometer. In the scenario used to simulate the user placing the electronic product with wireless charging function on the wireless charger, the user's placement force is relatively slight, and the micrometer can simulate the different placement forces used by the user when placing the electronic product with wireless charging function on the wireless charger. Specifically, the micrometer can be used to fine-tune the initial position of the movable frame 2, and then the drop height of the electronic product with wireless charging function can be fine-tuned, so as to achieve fine adjustment of the impact force of the electronic product with wireless charging function when it falls on the wireless charger, so as to simulate the slight placement force of the user when placing the electronic product with wireless charging function on the wireless charger. In other embodiments, the upper limit member 4 can also be replaced by a screw threadedly connected to the support frame 1, which can also play the role of adjusting the value of the drop height.

[0070] Optionally, the support frame 1 is adjustable in position along the vertical direction on the back plate 200. With such a configuration, the drop height of the product 400 to be tested can be adjusted by adjusting the position of the support frame 1 relative to the back plate 200, and by cooperating with the upper limiter 4, the drop height adjustment method is more diverse and has higher operability.

[0071] Specifically, in this embodiment, a waist-shaped hole 101 is provided on the support frame 1, and the length direction of the waist-shaped hole 101 extends in the vertical direction. A guide pin 210 is fixed on the back plate 200, and the outer diameter of the guide pin 210 matches the width dimension of the waist-shaped hole 101, and the guide pin 210 can be slidably inserted in the waist-shaped hole 101. The back plate 200 is also threaded with an adjusting bolt 11, and the adjusting bolt 11 is rotatably connected to the support frame 1. When the adjusting bolt 11 is rotated, the adjusting bolt 11 can drive the support frame 1 to move in the vertical direction, and then the drop height of the product 400 to be tested can be adjusted. Specifically, when adjusting the drop height of the product, a rough adjustment can be made by adjusting the bolt 11 first, and then a fine adjustment can be made by the upper limiter 4, which can make the adjustment more efficient. In other embodiments, a waist-shaped hole 101 can also be provided on the back plate 200, and a guide pin 210 can be provided on the support frame 1. Preferably, a plurality of waist-shaped holes 101 are provided on the support frame 1, and the plurality of waist-shaped holes 101 are arranged in an array along the left-right direction and the vertical direction. A plurality of guide pins 210 are provided on the back plate 200, and the plurality of guide pins 210 and the plurality of waist-shaped holes 101 are plugged into the waist-shaped holes 101 one by one.

[0072] As one of the alternative solutions, the support frame 1 and the back plate 200 are slidingly connected in the vertical direction, and an electric push rod is arranged on the back plate 200. The electric push rod and the support frame 1 are transmission connected, and the electric push rod can drive the support frame 1 to reciprocate in the vertical direction. By controlling the rotation angle of the motor in the electric push rod, the movement amount of the support frame 1 relative to the back plate 200 can be accurately controlled, and the purpose of adjusting the falling height of the product 400 to be tested can also be achieved.

[0073] Optionally, the drop test module 300 further includes a first scale ruler 12 disposed on the back plate 200, and a first pointer 13 disposed on the support frame 1, the first pointer 13 pointing to the first scale ruler 12. In this way, when adjusting the relative position of the support frame 1 and the back plate 200 in the vertical direction, the scale change indicated by the first pointer 13 can be used as a reference.

[0074] Optionally, the impact testing device further includes a slide rail 9 and a slider 10, the slide rail 9 extends in the vertical direction, one of the movable frame 2 and the support frame 1 is provided with the slide rail 9, and the other is provided with the slider 10, and the slider 10 is slidably provided on the slide rail 9 to ensure that the sliding direction of the movable frame 2 relative to the support frame 1 is stable. In this embodiment, a scheme of providing the slider 10 on the movable frame 2 and providing the slide rail 9 on the support frame 1 is exemplarily given.

[0075] As an alternative solution, the impact testing device also includes multiple optical bars extending in the vertical direction, and multiple sleeves. The multiple sleeves are slidably mounted on the multiple optical bars one by one. The multiple optical bars are arranged at intervals on the support frame 1, and the sleeves are fixed to the movable frame 2, which can also ensure that the movable frame 2 can slide stably in the vertical direction relative to the support frame 1.

[0076] In this embodiment, the lifting drive mechanism 3 includes a lifting cylinder 301, which includes a first cylinder body and a first cylinder rod slidably matched with the first cylinder body. The first cylinder body of the lifting cylinder 301 is fixed to the support frame 1, and the first cylinder rod of the lifting cylinder 301 is transmission-connected with the movable frame 2. The movable frame 2 can be driven to move relative to the support frame 1 in the vertical direction by the lifting cylinder 301. In other embodiments, the lifting cylinder 301 can also be replaced by a linear actuator such as an electric cylinder or a hydraulic cylinder.

[0077] Preferably, the lifting drive mechanism 3 further includes a T-shaped connector 302, the movable frame 2 is provided with a T-shaped slot 201 extending in the left-right direction or the front-back direction, the connector 302 is slidably disposed in the T-shaped slot 201, and the connector 302 is fixedly connected to the first cylinder rod of the lifting cylinder 301. In this way, the matching accuracy requirement between the first cylinder and the movable frame 2 can be reduced in the extending direction of the T-shaped slot 201.

[0078] Optionally, the drop test module 300 further includes a second scale ruler 15 disposed on the support frame 1, and a second pointer 16 disposed on the movable frame 2, the second pointer 16 pointing to the second scale ruler 15. In this way, when the relative position of the movable frame 2 and the support frame 1 along the vertical direction is adjusted, the scale change indicated by the second pointer 16 can be used as a reference.

[0079] Optionally, the first carrier 6 includes a guide column 601 and a receiving box 602, the connector 5 is provided with a guide hole 501 extending in the vertical direction, the guide column 601 can be slidably inserted into the guide hole 501, the receiving box 602 is fixed to the bottom end of the guide column 601, and the receiving box 602 is used to receive the product 400 to be tested. Specifically, the locking mechanism 8 is used to lock or unlock the relative position of the connector 5 and the guide column 601. In this way, after the locking mechanism 8 unlocks the relative position of the first carrier 6 and the connector 5, the guide column 601 will fall downward along the guide hole 501 of the connector 5, which can ensure that the falling direction of the first carrier 6 is the vertical direction, so as to avoid the locking mechanism 8 at the moment of unlocking the relative position of the first carrier 6 and the connector 5, due to the contact stress between the first carrier 6 and the connector 5, causing the direction of the first carrier 6 to deviate.

[0080] Optionally, the limiting hole 502 is a long hole, and the length direction of the limiting hole 502 extends in the vertical direction. A limiting pin 603 is also fixed on the guide column 601. The outer diameter of the limiting pin 603 matches the width dimension of the limiting hole 502, and the limiting pin 603 can slide in the limiting hole 502. Such a setting can prevent the guide column 601 from rotating relative to the connecting member 5 during the falling of the first carrier 6 and the product to be tested 400, and when the product to be tested 400 collides with the impact target part 500, thereby ensuring that the relative angle between the connecting member 5 and the first carrier 6 does not change.

[0081] In addition, by limiting the sliding range of the limit pin 603 at both ends of the length direction of the limit hole 502, the sliding range of the guide column 601 relative to the connector 5 can be limited, thereby limiting the drop height applicable to the impact test device. At the same time, due to the cooperation between the limit hole 502 and the limit pin 603, the limit pin 603 cannot be separated from the limit hole 502, and then after the first carrier 6 and the product to be tested 400 fall and collide with the impact target part 500, the guide column 601 and the connector 5 remain plugged in and are not separated, which can ensure that the position of the first carrier 6 can remain stable after the first carrier 6 falls in the vertical direction, and then when the movable frame 2 is in the retracted position, the relative positions of the first carrier 6 and the connector 5 can remain consistent, so that the locking mechanism 8 can successfully lock the first carrier 6 and the connector 5.

[0082] Optionally, see Figure 6 The locking mechanism 8 includes a locking drive 801 and a locking pin 802. The locking drive 801 is in transmission connection with the locking pin 802. The locking pin 802 is inserted into the limiting hole 502 and is located above the limiting pin 603. The locking drive 801 can drive the locking pin 802 to extend into the guide hole 501 and plug into the guide column 601, and the locking drive 801 can also drive the locking pin 802 to exit the guide hole 501. Specifically, the guide column 601 is provided with a slot 6011. The locking drive 801 can drive the locking pin 802 to move in the front-rear direction so that the locking pin 802 has a locking position and an unlocking position. When the locking pin 802 is in the locking position, the locking pin 802 extends into the guide hole 501 and plugs into the slot 6011 on the guide column 601. When the locking pin 802 is in the unlocking position, the locking pin 802 exits the guide hole 501 and separates from the guide column 601. In this way, the locking drive 801 drives the locking pin 802 to reciprocate, thereby locking and unlocking the relative position of the guide column 601 and the connecting member 5, and further locking or unlocking the relative position of the first carrier 6 and the connecting member 5. Preferably, the end of the locking pin 802 for plugging with the slot 6011 is configured to be tapered, so as to ensure that the locking pin 802 can be smoothly inserted into the slot 6011.

[0083] In this embodiment, the locking drive member 801 adopts a locking cylinder, which includes a second cylinder body and a second cylinder rod slidably matched with the second cylinder body, the second cylinder body is fixed to the movable frame 2, and the second cylinder rod is fixedly connected to the locking pin 802. In other embodiments, the locking drive member 801 also adopts an electric cylinder or a hydraulic cylinder.

[0084] Preferably, the locking mechanism 8 also includes a support block 803 fixed to the movable frame 2, the support block 803 is located between the connecting piece 5 and the second cylinder body, and the locking pin 802 is slidably inserted into the support block 803. Such a configuration can support the locking pin 802 through the support block 803, so that the locking pin 802 can withstand a larger bending moment and the movement direction of the locking pin 802 can remain stable.

[0085] As an alternative solution, the locking drive 801 can drive the locking pin 802 to extend into the guide hole 501 and press the guide column 601 against the hole wall of the guide hole 501; and the locking drive 801 can also drive the locking pin 802 to withdraw from the guide hole 501 and separate from the guide column 601. In this way, the locking drive 801 drives the locking pin 802 to press the guide column 601 against the connecting member 5, which can also achieve locking the relative positions of the first carrier 6 and the connecting member 5.

[0086] Optionally, the containing box 602 includes a box body 6021, and a box cover 6022 disposed on the box body 6021, the box cover 6022 is located below the box body 6021, the box body 6021 and the box cover 6022 are arranged to form a containing cavity 6023 for containing the product to be tested 400, the box cover 6022 is provided with an opening 6024 communicating with the containing cavity 6023, and the opening 6024 is used to expose the collision contact portion 410 of the product to be tested 400. Specifically, the box body 6021 is connected to the bottom end of the guide column 601, the box cover 6022 of the containing box 602 is arranged downward, and the opening 6024 is arranged downward, so that when the first carrier 6 and the product to be tested 400 fall downward as a whole, the collision contact portion 410 of the product to be tested 400 will contact the impact target part 500. Preferably, an elastic pad (not shown in the drawings) can be provided in the accommodating cavity 6023. In the vertical direction, the elastic pad (not shown in the drawings) is located between the product to be tested 400 and the cavity wall of the accommodating cavity 6023, so that when the product to be tested 400 collides with the impact target part 500, the elastic pad can buffer the inertia force of the box body 6021 and the guide column 601, thereby avoiding affecting the test results.

[0087] Optionally, see Figures 2 to 5 ,as well as Figure 7The drop test module 300 also includes a lower limit mechanism 14, which is adjustable in position along the vertical direction and is arranged on the back plate 200. The lower limit mechanism 14 is located below the movable frame 2, and the lower limit mechanism 14 can abut against the movable frame 2 to limit the downward movement of the movable frame 2. Specifically, when the movable frame 2 is located at the retracted position, the lower limit mechanism 14 abuts against the movable frame 2, so that the movable frame 2 can be stably stopped at the retracted position, thereby ensuring that the locking mechanism 8 has a high accuracy when locking the relative position of the guide column 601 and the connecting member 5. Among them, the position of the lower limit mechanism 14 can be adjusted with reference to the position of the slot 6011 on the guide column 601 when the product to be tested 400 collides with the impact target 500, so that when the movable frame 2 is located at the retracted position, the locking pin 802 of the locking mechanism 8 can be opposite to the slot 6011 and located at the same height.

[0088] In this embodiment, the lower limiting mechanism 14 includes a connecting seat 1401 and a lower limiting member 1402. The connecting seat 1401 is used to connect with the back plate 200. The lower limiting member 1402 is arranged on the connecting member 5 and is used to abut against the movable frame 2 in the vertical direction to limit the retracted position of the movable frame 2. The relative position of the lower limiting mechanism 14 and the back plate 200 can be adjusted in three ways: the connecting seat 1401 and the back plate 200 are adjustable in the vertical direction; the lower limiting member 1402 and the connecting seat 1401 are adjustable in the vertical direction; or the connecting seat 1401 and the back plate 200 are adjustable in the vertical direction and the lower limiting member 1402 and the connecting seat 1401 are adjustable in the vertical direction.

[0089] Among them, this embodiment exemplarily provides a solution in which the connection seat 1401 and the back plate 200 are adjustable in position in the vertical direction, and the lower limiter 1402 and the connection seat 1401 are adjustable in position in the vertical direction. Specifically, the back plate 200 is provided with a plurality of threaded holes 220, and the plurality of threaded holes 220 are arranged at equal intervals in the vertical direction. The connection seat 1401 is provided with a mounting hole 1403, and a bolt passes through the mounting hole 1403 and is threadedly connected to one of the plurality of threaded holes 220 to achieve adjustment of the position of the connection seat 1401 relative to the back plate 200 in the vertical direction. The lower limiter 1402 adopts a micrometer, and the function of the micrometer to achieve position adjustment is a prior art and will not be repeated here.

[0090] Optionally, the lower limiting mechanism 14 also includes a hydraulic damper 1404 arranged on the connecting seat 1401. Before the movable frame 2 moves to the retracted position, the movable frame 2 first contacts the hydraulic damper 1404 and is decelerated and buffered, thereby avoiding direct rigid collision between the movable frame and the lower limiting member 1402.

[0091] Optionally, see Figure 8The second carrier 7 includes a positioning plate 701 and a plurality of positioning shafts 702 arranged at intervals. The positioning plate 701 is supported on the workbench 100, and the positioning plate 701 is provided with a positioning groove 7011 for positioning the impact target part 500. The positioning shaft 702 is fixed to the positioning plate 701, and the positioning shaft 702 is plugged into the workbench 100. For impact target parts 500 of various specifications, as long as the outer diameter of the impact target part 500 and the inner diameter of the positioning groove 7011 are compatible, the second carrier 7 can be shared. In this embodiment, the second carrier 7 also includes a plurality of bearings 703 fixed to the workbench 100, and the plurality of positioning shafts 702 are plugged into the plurality of bearings 703 in a one-to-one correspondence.

[0092] Optionally, see Fig. 9 The workbench 100 is provided with an electric control box 110, and a power supply 600 is provided in the electric control box 110. The wires of the wireless charger extend into the electric control box 110 and are connected to the power supply 600, so as to avoid that the power supply cables of the wireless charger are completely exposed and appear messy.

[0093] Optionally, see Figure 1 In this embodiment, the number of drop test modules 300 included in the impact test device is not limited, and may be one or more. In this embodiment, a scheme of setting a plurality of drop test modules 300 is exemplarily provided, and the plurality of drop test modules 300 are arranged at intervals along the left-right direction.

[0094] Optionally, the impact testing device further includes a protective cover shell 700 fixed to the workbench 100 , and the protective cover shell 700 partially covers the back plate 200 and each drop test module 300 to ensure safe operation.

[0095] Taking the product to be tested 400 as an electronic product with a wireless charging function and the impact target 500 as a wireless charger as an example, the working principle of the impact testing device provided in this embodiment is as follows:

[0096] Adjustment method: Based on the drop height requirement of the electronic product, the relative positions of the support frame 1 and the movable frame 2 and the back plate 200 are coarsely adjusted synchronously by rotating the adjusting bolt 11, and then the relative position of the movable frame 2 relative to the support frame 1 is precisely adjusted by the upper limit member 4; based on the height of the slot 6011 on the guide column 601 when the electronic product on the first carrier 6 contacts the wireless charger, the position of the lower limit mechanism 14 relative to the back plate 200 is adjusted, and the coarse adjustment can be performed by adjusting the position of the connecting seat 1401 relative to the back plate 200, and then the precise adjustment can be performed by adjusting the position of the lower limit member 1402 relative to the connecting seat 1401.

[0097] Test process: the electronic product is installed in the containing box 602, the wireless charger is installed on the positioning plate 701 of the second carrier 7, and the movable frame 2 is located in the initial position, and the locking pin 802 of the locking mechanism 8 is in the locked position; then the locking cylinder drives the locking pin 802 to move to the unlocking position, the containing box 602 and the electronic product fall downward, and the guide column 601 slides downward along the guide hole 501 of the connector 5, and finally the electronic product collides with the wireless charger; then the lifting cylinder 301 drives the movable frame 2 to move to the retracted position, and the locking cylinder drives the locking pin 802 to move to the locked position to re-lock the relative position of the guide column 601 and the connector 5, and then the lifting cylinder 301 drives the movable frame 2 to move to the initial position to enter the next cycle of the drop test.

[0098] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. 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 implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An impact testing device, characterized in that: The invention comprises a workbench (100), a back plate (200) arranged on the workbench (100), and a drop test module (300), wherein the drop test module (300) comprises: A support frame (1) arranged on the back plate (200); A movable frame (2) whose position relative to the supporting frame (1) is adjustable in the vertical direction; A first carrier (6) for positioning a product to be tested (400); a second carrier (7), disposed on the workbench (100) and located below the first carrier (6), the second carrier (7) being used to position the impact target part (500); and, A connecting member (5) is arranged on the movable frame (2); A locking mechanism (8) is arranged on the movable frame (2) and is used to lock or unlock the relative position of the first carrier (6) and the connecting member (5).

2. The impact testing device according to claim 1, characterized in that: The connecting member (5) is provided with a guide hole (501) extending in a vertical direction, the first carrier (6) comprises a guide column (601) and a receiving box (602), the guide column (601) is slidably inserted into the guide hole (501), the receiving box (602) is fixed to the bottom end of the guide column (601), and the receiving box (602) is used to receive the product to be tested (400); The first carrier (6) also includes a limit pin (603) arranged on the guide column (601), and the connecting member (5) is also provided with a limit hole (502) extending in a vertical direction and connected to the guide hole (501), and the limit pin (603) is inserted into the limit hole (502) and can slide along the limit hole (502).

3. The impact testing device according to claim 2, characterized in that: The containing box (602) comprises a box body (6021) and a box cover (6022) disposed on the box body (6021); the box cover (6022) is located below the box body (6021); the box body (6021) and the box cover (6022) are arranged to form a containing cavity (6023) for containing a product to be tested (400); the box cover (6022) is provided with an opening (6024) communicating with the containing cavity (6023); the opening (6024) is used to expose a collision contact portion (410) of the product to be tested (400).

4. The impact testing device according to claim 2, characterized in that: The locking mechanism (8) comprises a locking drive member (801) fixed to the movable frame (2), and a locking pin (802) drivingly connected to the locking drive member (801); the locking pin (802) is inserted into the limiting hole (502); the guide column (601) is located below the locking pin (802); the locking drive member (801) can drive the locking pin (802) to extend into the guide hole (501) and be plugged into the guide column (601); and the locking drive member (801) can also drive the locking pin (802) to withdraw from the guide hole (501).

5. The impact testing device according to claim 2, characterized in that: The impact testing device also includes: A lifting drive mechanism (3) is arranged on the support frame (1), the lifting drive mechanism (3) is in driving connection with the movable frame (2), and the lifting drive mechanism (3) can drive the movable frame (2) to reciprocate in a vertical direction; An upper limit member (4) is arranged on the support frame (1) in an adjustable manner in the vertical direction. The upper limit member (4) is located above the movable frame (2) and can abut against the movable frame (2) to limit the upward movement of the movable frame (2).

6. The impact testing device according to claim 5, characterized in that: The upper stopper (4) comprises a micrometer.

7. The impact testing device according to claim 5, characterized in that: The drop test module (300) further comprises a lower limiting mechanism (14), wherein the lower limiting mechanism (14) is arranged on the back plate (200) in an adjustable manner in the vertical direction, the lower limiting mechanism (14) is located below the movable frame (2), and the lower limiting mechanism (14) can abut against the movable frame (2) to limit the downward movement of the movable frame (2).

8. The impact testing device according to claim 7, characterized in that: The lower limiting mechanism (14) comprises a connecting seat (1401) and a lower limiting member (1402), wherein: The connection seat (1401) and the back plate (200) are adjustable in position along the vertical direction; and / or, The positions of the lower limiting member (1402) and the connecting seat (1401) are adjustable in the vertical direction.

9. The impact testing device according to claim 1, characterized in that: The support frame (1) is arranged on the back plate (200) in an adjustable manner along the vertical direction.

10. The impact testing device according to claim 9, characterized in that: The drop test module (300) further comprises a first scale ruler (12) arranged on the back plate (200), and a first pointer (13) arranged on the support frame (1), wherein the first pointer (13) points to the first scale ruler (12).

11. The impact testing device according to claim 1, characterized in that: The second carrier (7) includes a positioning plate (701) and a plurality of positioning shafts (702) arranged at intervals, wherein the positioning plate (701) is supported on the workbench (100), and the positioning plate (701) is provided with a positioning groove (7011) for positioning the impact target part (500), and the positioning shaft (702) is fixed to the positioning plate (701), and the positioning shaft (702) is plugged into the workbench (100).

12. The impact testing device according to any one of claims 1 to 11, characterized in that: The drop test module (300) further comprises a second scale ruler (15) arranged on the support frame (1), and a second pointer (16) arranged on the movable frame (2), wherein the second pointer (16) points to the second scale ruler (15).

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