Drop test device
The combined design of the guide column and the blocking module solves the problems of component falling trajectory deviation and unstable posture in the existing technology, achieves stable falling of components and accurate test results, and reduces safety hazards.
Patent Information
- Application Number
- CN202422782588.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-14
AI Technical Summary
Existing drop test devices have difficulty achieving completely synchronized release of the left and right sides when the lifting mechanism withdraws the lifting force, causing the falling trajectory of the components to deviate from the vertical route and the posture to become unstable, affecting the accuracy and safety of the test results.
The combined design of guide columns, drive parts, slides, blocking modules and limiters is adopted. The synchronous release and stable falling of parts are achieved by switching the blocking modules, ensuring that the parts fall according to the standard gravitational acceleration and vertical displacement route.
It achieves a stable trajectory and posture of components during the drop test, improves the accuracy and safety of test results, and avoids the risk of unexpected impact and equipment collision.
Smart Images
Figure CN223320005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a testing device, in particular to a drop testing device, and belongs to the technical field of automobile parts detection. Background Art
[0002] In automotive component reliability testing, drop testing is a crucial tool for evaluating the impact resistance of components like speaker modules. Currently, common drop test setups typically consist of a test platform and a lifting mechanism. During the test, the component under test is typically lifted to a specified height, then released by removing the lifting force to allow it to freely fall.
[0003] However, actual testing revealed that the lifting mechanism often struggles to achieve fully synchronized release of both left and right sides when releasing the lifting force. This asynchrony results in uneven force on the component during its initial drop. This uneven force can cause two major issues: first, the component's drop trajectory can deviate from the pre-set vertical path, resulting in a shifted drop position; second, the component can tilt or rotate during the drop, causing the impact point and posture to differ from the test design expectations.
[0004] This test deviation not only affects the accuracy and repeatability of test results, but can also cause components to impact in unexpected locations or postures, distorting test data. This deviation can severely impact test effectiveness, particularly for tests requiring precise control of the impact point. Furthermore, uncontrolled drop trajectories can cause unexpected collisions between components and test equipment, increasing testing safety risks.
[0005] Therefore, how to ensure that components maintain a stable falling trajectory and posture during the drop test has become a technical problem that needs to be solved urgently. Utility Model Content
[0006] Based on the above background, the purpose of the present invention is to provide a drop test device to solve the problems described in the background technology.
[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:
[0008] A drop test device comprises a base, a guide column, a driving member, a slide, a carrier, a blocking module and a limit member; the bottom of the guide column is fixedly connected to the base, the driving member is fixedly connected to the guide column, the slide is arranged below the driving member, the slide is fixedly connected to the power output end of the driving member, and the slide is slidably connected to the guide column, and the side of the carrier is hinged to the side of the slide; the blocking module is arranged below the slide, and the blocking module has a first position and a second position relative to the guide column. When in the first position, the blocking end of the blocking module abuts the bottom of the slide, and when in the second position, there is a distance between the blocking end of the blocking module and the side of the slide; the limit member is arranged below the blocking module, and the limit member is fixedly connected to the guide column.
[0009] In the initial state, the component to be measured is placed on the carrier. The carrier is flush with the slide due to the hinge resistance between the carrier and the slide. At this time, the blocking module is in the first position, against the bottom of the slide, and the driving part applies downward pressure to the slide. Since the slide is blocked, the driving part is in a force storage state; after accumulating enough downward pressure, the blocking module switches to the second position, and the blocking force on the slide suddenly disappears. The slide drives the carrier to move down along the guide column with a gravitational acceleration exceeding 1g. The component to be measured on the carrier loses the support of the carrier and falls with normal gravitational acceleration. After the slide moves down a certain distance, it is blocked by the limiter and stops moving down. At this time, the carrier continues to move down due to inertia, and overcomes the hinge resistance between the carrier and the slide and rotates along the hinge part. The rotational movement is carried out in the direction close to the guide column, thereby avoiding the falling path of the component to be measured, so that the component falls with a standard falling posture, normal gravitational acceleration and vertical displacement path.
[0010] Preferably, the number of the guide pillars is at least two, and the guide pillars are parallel to each other.
[0011] Preferably, the driving member is a first cylinder.
[0012] Preferably, the side of the slide is provided with one of a hinge hole and a connecting column, the side of the platform is provided with the other of a hinge hole and a connecting column, and the hinge hole and the connecting column are interference fit.
[0013] Preferably, a guide sleeve is provided at the connection portion between the slide and the guide post and is sleeved on the outside of the guide post, and the guide sleeve is fixedly connected to the slide.
[0014] Preferably, the blocking module includes a second cylinder and a blocking member, the second cylinder is fixedly connected to the guide column, the blocking member is provided at the power output end of the second cylinder, and the blocking member is configured as the blocking end of the blocking module.
[0015] Preferably, the blocking member is a roller, and the roller is hinged to the power output end of the second cylinder.
[0016] Preferably, the drop test device further comprises a magnet, which is disposed below the slide, and is fixedly connected to a limiting member, and the carrier is made of ferromagnetic material.
[0017] Preferably, the drop test device further comprises a fixing member, which is fixedly connected to the guide column, the fixing member is located above the driving member, and the driving member is fixed to the bottom of the fixing member.
[0018] Compared with the prior art, the utility model has the following advantages:
[0019] The utility model provides a drop test device, which enables the lifting force of the carrier on the tested component to be released completely and synchronously at different positions of the tested component, thereby ensuring that the component maintains a stable drop trajectory and posture during the drop test. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a drop test device of the utility model;
[0022] Figure 2 This is a partial three-dimensional structural diagram of a drop test device of the utility model;
[0023] Figure 3 This is a side structural diagram of the drop test device of the present invention when the blocking module is in the first position;
[0024] Figure 4 This is a side structural diagram of the drop test device of the present invention when the blocking module is in the second position;
[0025] In the figure: 1. Base; 2. Guide column; 3. First cylinder; 4. Slide; 5. Carrier; 6. Blocking module; 7. Limiting member; 8. Magnet; 9. Fixing member; 401. Hinge hole; 402. Guide sleeve; 501. Connecting column; 601. Second cylinder; 602. Roller. DETAILED DESCRIPTION
[0026] The following is a further detailed description of the technical solution of the present invention through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the scope of protection of the present invention.
[0027] In this utility model, unless otherwise specified, all parts and percentages are by weight. The equipment and raw materials used are commercially available or commonly used in the art. The methods in the following embodiments, unless otherwise specified, are conventional methods in the art. The components or equipment in the following embodiments, unless otherwise specified, are all common standard parts or components known to those skilled in the art. Their structures and principles are known to those skilled in the art through technical manuals or routine experimental methods.
[0028] The following detailed description of the embodiments of the present invention is made in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.
[0029] like Figure 1 and Figure 2 As shown, an embodiment of the present utility model discloses a drop test device, which includes a base 1, a guide column 2, a driving member, a slide 4, a carrier 5, a blocking module 6 and a limit member 7.
[0030] The bottom of the guide column 2 is fixedly connected to the base 1, the driving member is fixedly connected to the guide column 2, the slide 4 is arranged below the driving member, the slide 4 is fixedly connected to the power output end of the driving member, and the slide 4 is slidably connected to the guide column 2, and the side of the carrier 5 is hinged to the side of the slide 4.
[0031] The blocking module 6 is arranged below the slide 4. The blocking module 6 has a first position and a second position relative to the guide column 2. When in the first position, the blocking end of the blocking module 6 abuts the bottom of the slide 4. When in the second position, there is a distance between the blocking end of the blocking module 6 and the side of the slide 4.
[0032] The limiting member 7 is provided below the blocking module 6 , and the limiting member 7 is fixedly connected to the guide post 2 .
[0033] The working principle of the drop test device is:
[0034] In the initial state, if Figure 3 As shown, the component to be tested is placed on the carrier 5. The carrier 5 is flush with the slide 4 due to the hinge resistance between the carrier 5 and the slide 4. At this time, the blocking module 6 is in the first position, against the bottom of the slide 4, and the driving member applies downward pressure to the slide 4. Since the slide 4 is blocked, the driving member is in a power storage state.
[0035] After sufficient downforce is accumulated, Figure 4 As shown, the blocking module 6 switches to the second position, and the blocking force on the slide 4 suddenly disappears. The slide 4 drives the carrier 5 to move down along the guide column 2 at a gravitational acceleration exceeding 1g. The measured parts on the carrier 5 lose the support of the carrier 5 and fall down at a normal gravitational acceleration. After the slide 4 moves down for a distance, it is blocked by the limit member 7 and stops moving down. At this time, the carrier 5 continues to move down due to the inertia force, and overcomes the hinge resistance between the carrier 5 and the slide 4 and rotates along the hinge part. The rotational movement is carried out in the direction close to the guide column 2, thereby avoiding the falling path of the measured parts, and making the parts fall in a standard falling posture, normal gravitational acceleration and vertical displacement path.
[0036] Specifically, in order to ensure the support stability for other components and the sliding stability of the slide 4, the number of guide posts 2 is set to two, and the guide posts 2 are parallel to each other. Of course, in other embodiments, the number of guide posts 2 can be increased according to actual needs.
[0037] Specifically, the driving member is the first cylinder 3 , and air is supplied to the first cylinder 3 so that the first cylinder 3 applies downward pressure to the slide 4 .
[0038] Specifically, a hinge hole 401 is provided on the side of the slide 4, and a connecting post 501 is provided on the side of the carrier 5. The hinge hole 401 and the connecting post 501 have an interference fit, thereby providing hinge resistance at the hinged portion. Of course, the hinge hole 401 can also be provided on the side of the carrier 5, while the connecting post 501 can be provided on the side of the slide 4.
[0039] Specifically, in order to increase the sliding stability of the slide 4 , a guide sleeve 402 sleeved on the outside of the guide post 2 is provided at the connection portion between the slide 4 and the guide post 2 , and the guide sleeve 402 is fixedly connected to the slide 4 .
[0040] Specifically, the blocking module 6 includes a second cylinder 601 and a blocking member. The second cylinder 601 is fixedly connected to the guide column 2. The blocking member is provided at the power output end of the second cylinder 601 and is configured as the blocking end of the blocking module 6. By supplying and stopping air to the second cylinder 601, the blocking member at the power output end of the second cylinder 601 switches between a first position and a second position.
[0041] Specifically, the blocking member is a roller 602 , and the roller 602 is hinged to the power output end of the second cylinder 601 .
[0042] Specifically, the drop test device also includes a magnet 8 positioned below the slide 4 and fixedly connected to a stopper 7. The carrier 5 is made of ferromagnetic material. As the carrier 5 rotates toward the guide post 2, the magnet 8 exerts a magnetic force on the carrier 5, causing it to be attracted and fixed close to the guide post 2 after rotation. This prevents the carrier 5 from bouncing off the guide post 2 and interfering with the falling path of the component being tested.
[0043] Specifically, in order to facilitate the fixing of the driving member, the drop test device further includes a fixing member 9 , which is fixedly connected to the guide column 2 . The fixing member 9 is located above the driving member, and the driving member is fixed to the bottom of the fixing member 9 .
[0044] The drop test device enables the lifting force of the carrier 5 on the tested component to be released completely and synchronously at different parts of the tested component, ensuring that the component maintains a stable falling trajectory and posture during the drop test.
[0045] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims
1. A drop test device, characterized in that: The drop test device comprises a base (1), a guide column (2), a driving member, a slide (4), a carrier (5), a blocking module (6) and a limit member (7); the bottom of the guide column (2) is fixedly connected to the base (1), the driving member is fixedly connected to the guide column (2), the slide (4) is arranged below the driving member, the slide (4) is fixedly connected to the power output end of the driving member, and the slide (4) is slidably connected to the guide column (2), and the side of the carrier (5) is fixedly connected to the slide. The side of the platform (4) is hinged; the blocking module (6) is arranged below the slide (4), and the blocking module (6) has a first position and a second position relative to the guide column (2). When in the first position, the blocking end of the blocking module (6) abuts the bottom of the slide (4), and when in the second position, there is a distance between the blocking end of the blocking module (6) and the side of the slide (4); the limiting member (7) is arranged below the blocking module (6), and the limiting member (7) is fixedly connected to the guide column (2).
2. A drop test device according to claim 1, characterized in that: The number of the guide columns (2) is at least two, and the guide columns (2) are parallel to each other.
3. The drop test device according to claim 1, characterized in that: The driving member is a first cylinder (3).
4. The drop test device according to claim 1, characterized in that: The side of the slide (4) is provided with one of a hinge hole (401) and a connecting column (501), and the side of the carrier (5) is provided with the other of a hinge hole (401) and a connecting column (501), and the hinge hole (401) and the connecting column (501) are interference fit.
5. The drop test device according to claim 1, characterized in that: A guide sleeve (402) sleeved on the outside of the guide post (2) is provided at the connection portion between the slide (4) and the guide post (2), and the guide sleeve (402) is fixedly connected to the slide (4).
6. The drop test device according to claim 1, characterized in that: The blocking module (6) comprises a second cylinder (601) and a blocking member, wherein the second cylinder (601) is fixedly connected to the guide column (2), and the blocking member is provided at the power output end of the second cylinder (601), and the blocking member is configured as the blocking end of the blocking module (6).
7. A drop test device according to claim 6, characterized in that: The blocking member is a roller (602), and the roller (602) is hinged to the power output end of the second cylinder (601).
8. The drop test device according to claim 1, characterized in that: The drop test device further comprises a magnet (8), which is arranged below the slide (4), the magnet (8) is fixedly connected to the limiter (7), and the carrier (5) is made of ferromagnetic material.
9. The drop test device according to claim 1, characterized in that: The drop test device further comprises a fixing member (9), wherein the fixing member (9) is fixedly connected to the guide column (2), the fixing member (9) is located above the driving member, and the driving member is fixed to the bottom of the fixing member (9).