A closed display case door opening and closing test device

Abstract

The utility model provides a kind of closed display cabinet switch door test device, including mounting bracket, telescopic cylinder, big arm, connecting rod and sucking disc assembly, cylinder hinge shaft and big arm hinge shaft are provided on the mounting bracket;The cylinder end tail and telescopic end head of the telescopic cylinder are connected in the cylinder hinge shaft and telescopic hinge shaft respectively;Big arm is sequentially connected in the telescopic hinge shaft, the big arm hinge shaft and connecting rod hinge shaft along its length direction, at least two adjusting holes for installing the telescopic hinge shaft are equipped on the big arm, to be used for adjusting the interval of the telescopic hinge shaft and the big arm hinge shaft;Two ends of the connecting rod are connected in the connecting rod hinge shaft and the sucking disc hinge shaft on the sucking disc assembly respectively.The telescopic rod is hinged in the adjusting hole of different position on big arm in the application, can make the stroke of telescopic cylinder, big arm length, connecting rod length adapt multiple different specifications cabinet door to carry out switch door test, and good adaptability.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, specifically to a test device for opening and closing doors of a closed display case. Background Technology

[0002] According to the requirements of GB / T 21001.2-2015, the test cycle for display cabinets should be no less than 24 hours under stable operating conditions. During the test, the cabinets should be opened cyclically for 12 hours. Furthermore, there are requirements regarding the number of times the doors are opened, the opening time, and the opening angle; for example, the door opening angle should exceed 60 degrees. Manual operation methods cannot guarantee the opening time, opening angle, or opening area, nor can they guarantee the duration of each opening.

[0003] In the prior art, such as the portable enclosed display cabinet door opening and closing test device disclosed in Chinese Utility Model Patent CN202221516089.3, the freezer door opening and closing structure disclosed in Chinese Utility Model Patent CN202422870467.3, and the enclosed display cabinet door opening and closing test device disclosed in Chinese Utility Model Patent CN202121332868.3, all the aforementioned disclosed test mechanisms have specific requirements for the connection position of the suction cup-type connecting device installed on the cabinet door. When the cabinet door is too wide or too narrow, Limited by fixed parameters such as the stroke of the telescopic cylinder, the length of the upper arm, and the length of the lower arm, if the suction cup connecting device cannot be installed on the cabinet door at a specific distance from the door hinge, the cabinet door cannot be opened and closed to the required angle, or even the door opening and closing function cannot be realized normally. It is necessary to replace it with a different specification of door opening and closing test device, which has poor adaptability; or it is necessary to replace the upper arm / lower arm of the required length according to the width of the cabinet door to change the distance between its installation position on the cabinet door and the door hinge, and then adjust the stroke of the telescopic cylinder to achieve a suitable door opening angle, which is cumbersome to operate.

[0004] Therefore, people have been seeking an ideal technical solution for designing a cabinet door opening and closing test device that can adapt to cabinet doors of different widths, can be connected to the cabinet door at any distance from the door hinge, and can adapt to various cabinet doors of different widths without changing to other specifications of the opening and closing test device, or without adjusting the stroke of the telescopic cylinder or changing to different lengths of the boom / arm. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a closed display cabinet door opening and closing test device. By hinged the telescopic rod to the adjustment holes at different positions on the main arm, the stroke of the telescopic cylinder, the length of the main arm, and the length of the connecting rod can be adapted to various cabinet doors of different specifications for door opening and closing tests, thus exhibiting good adaptability.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: It includes a mounting frame and an actuator. The actuator includes a telescopic cylinder, a boom, a connecting rod, and a suction cup assembly. The mounting frame is provided with a cylinder hinge shaft and a boom hinge shaft. The cylinder end and telescopic end of the telescopic cylinder are respectively connected to the cylinder hinge shaft and the telescopic hinge shaft. The boom is sequentially connected along its length to the telescopic hinge shaft, the boom hinge shaft, and the connecting rod hinge shaft. The boom is provided with at least two adjustment holes for mounting the telescopic hinge shaft to adjust the distance between the telescopic hinge shaft and the boom hinge shaft. The two ends of the connecting rod are respectively connected to the connecting rod hinge shaft and the suction cup hinge shaft on the suction cup assembly. The cylinder hinge shaft, the telescopic hinge shaft, the boom hinge shaft, the connecting rod hinge shaft, and the suction cup hinge shaft are parallel to each other.

[0007] In this application, the connection position between the suction cup assembly and the cabinet door is not limited. The suction cup assembly can be installed at any suitable opening and closing position on the cabinet door to adapt to cabinet doors of different widths. After installing the suction cup assembly, the relative position between the mounting bracket and the cabinet door is adjusted according to the distance between the installation position of the suction cup assembly and the cabinet door hinge. The telescopic hinge shaft is installed in the adjustment hole on the appropriate boom, so that the stroke of the telescopic cylinder can be adjusted to match the opening and closing angle of the door, thus realizing the normal opening and closing function. It can adapt to a variety of cabinet doors of different heights without the need to prepare different boom specifications, connecting rod specifications, and telescopic cylinder stroke specifications for different cabinet doors, thus having good adaptability.

[0008] Based on the above, the mounting frame includes a base frame and a mounting platform. The cylinder hinge shaft and the boom hinge shaft are mounted on the mounting platform in the form of columns. The top of the base frame is provided with a slide rail, and the bottom of the mounting platform is provided with a slider to allow the mounting platform to slide laterally relative to the closed cabinet door to adjust its fixed position.

[0009] The installation platform is mounted on the base frame via a sliding rail. When adjusting the door opening and closing test device, the actuator can be quickly slid laterally for adjustment. It is especially suitable for multiple cabinets arranged in rows or cabinets with multiple doors, reducing the difficulty of adjustment for staff and improving adaptability.

[0010] Based on the above, the base frame is provided with connecting holes, and multiple sets of the base frames are bolted together in a row through the connecting holes. Each set of base frames is provided with a corresponding actuator, so as to match the multiple sets of actuators with the multiple sets of cabinet doors arranged in a row.

[0011] Multiple base frames are assembled and arranged through connection holes, enabling the actuator to adapt to multiple cabinets arranged in rows and cabinets with multiple doors, thus improving adaptability.

[0012] Based on the above, the mounting platform is a rectangular plate, and the cylinder hinge shaft and the boom hinge shaft are respectively located near the two opposite sides of the mounting platform plate.

[0013] The rectangular mounting platform facilitates stable sliding. The relatively arranged cylinder hinge and boom hinge allow for efficient use of the limited mounting platform space. On the other hand, it also makes efficient use of the space between the mounting platform and the cabinet door, avoiding interference between the mounting platform and the base frame and the cabinet door during door opening and closing tests.

[0014] Based on the above, the base frame is provided with pin holes arranged at equal intervals along the direction of the slide rail, and a pin shaft is provided on the mounting platform. The pin shaft can be inserted into different pin holes to fix the mounting platform.

[0015] The mounting platform can be fixed in different positions on the base frame using pins and pin holes.

[0016] Based on the above, the base frame is formed by splicing aluminum alloy square tubes.

[0017] By splicing aluminum alloy square tubes, the overall weight of the base frame is reduced, making it easier for staff to move and adjust the position.

[0018] Based on the above, a Z-shaped linkage structure is formed between the telescopic cylinder, the boom, and the connecting rod.

[0019] The Z-shaped linkage structure positions the telescopic cylinder on the side of the main arm away from the cabinet door, preventing the mounting frame and actuator from interfering with the door opening and closing test. This allows it to adapt to various cabinet door sizes, improving its versatility. Based on this, the mounting frame has two cylinder hinge shafts. The main arm hinge shaft forms the vertex, and the two cylinder hinge shafts form the base, creating an isosceles triangle. This allows the actuator to have two mirror-image mounting positions for testing left-opening and right-opening cabinet doors, respectively.

[0020] By changing the overall orientation of the telescopic cylinder, boom, connecting rod, and suction cup assembly, it is possible to adapt to cabinet doors with different opening directions for opening and closing tests, thereby improving adaptability. Based on the above, the suction cup assembly includes two suction cups connected by a connecting handle, and the suction cup hinge is located on the connecting handle.

[0021] The double-claw suction cup structure not only securely connects to the cabinet door, but also allows the suction cup hinge to apply force evenly to the cabinet door.

[0022] According to the above claims, the telescopic cylinder includes a motor, a reducer, and a telescopic push rod.

[0023] Compared to pneumatic or hydraulic telescopic cylinders, telescopic cylinders using electric actuators have a simpler structure due to the reduction of air / oil circuits.

[0024] This utility model has substantial features and advancements compared to the prior art. Specifically, as summarized above, the actuator composed of the telescopic cylinder, the main arm, the connecting rod, and the suction cup assembly of this application is mounted on a mounting bracket. By allowing the telescopic cylinder and the main arm to have different hinge positions, the suction cup assembly can be installed at suitable positions rather than specific positions on cabinet doors of different specifications. This allows the entire door opening and closing test device of one specification to be adapted to cabinet doors of different widths. For cabinet doors of different specifications, there is no need to replace the door opening and closing test device of other specifications or to replace the main arm / connecting rod or adjust the telescopic cylinder, thus exhibiting good compatibility and adaptability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model in the open state; Figure 2 This is a schematic diagram of the overall structure of this utility model in the closed state; Figure 3 This is a schematic diagram of the overall structure of this utility model after multiple sets are spliced ​​together.

[0026] In the figure, the attached figures are labeled as follows: Telescopic cylinder 11, boom 12, adjustment hole 1201, connecting rod 13, connecting handle 14, suction cup 15; Cylinder hinge 21, telescopic hinge 22, boom hinge 23, connecting rod hinge 24, suction cup hinge 25, cabinet door hinge 26; Base frame 31, pin hole 3101, connecting hole 3102, mounting platform 32, slide rail 33; Cabinet door 41, cabinet body 42. Detailed Implementation

[0027] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0028] Example 1 like Figures 1-3 As shown, the closed display cabinet door opening and closing test device of this embodiment includes: a mounting frame and an actuator. The mounting frame and the actuator are connected by a hinge shaft. The actuator is used to perform the opening and closing action of the cabinet door 41. The actuator includes a telescopic cylinder 11, a large arm 12, a connecting rod 13 and a suction cup assembly. The suction cup assembly is used to connect the cabinet door 41. The cabinet door 41 and the cabinet body 42 are connected by a cabinet door shaft 26.

[0029] Specifically, the mounting bracket is equipped with a cylinder hinge 21 and a boom hinge 23. The cylinder hinge 21 is positioned further away from the cabinet door 41 than the boom hinge 23. The cylinder end of the telescopic cylinder 11 is hinged to the cylinder hinge 21. The middle part of the boom 12 is hinged to the boom hinge 23. The boom 12 is hinged to the telescopic end of the telescopic cylinder 11 and one end of the connecting rod 13 on both sides of the boom hinge 23 via telescopic hinge 22 and connecting rod hinge 24, respectively. The boom 12 is connected to the telescopic hinge 22, the boom hinge 23 and the connecting rod hinge 24 in sequence along its length. When the telescopic cylinder 11 extends or retracts, it will drive the boom 12 to rotate around the boom hinge 23.

[0030] The boom 12 is provided with at least two adjustment holes 1201 for installing the telescopic hinge shaft 22, so as to adjust the distance between the telescopic hinge shaft 22 and the boom hinge shaft 23. In this way, by installing the telescopic hinge shaft 22 in different adjustment holes 1201, the telescopic cylinder 11 can correspond to different boom rotation angles within its stroke range, and thus adjust to a suitable door opening and closing angle.

[0031] The boom 12 can be a straight boom, and the adjustment holes 1201 are arranged along the length of the boom 12. The number of adjustment holes 1201 can be set according to actual needs. For example, in the figure, the adjustment holes 1201 are set to 6.

[0032] The two ends of the connecting rod 13 are respectively connected to the connecting rod hinge 24 and the suction cup hinge 25 on the suction cup assembly.

[0033] The suction cup assembly also includes a suction cup 15, which is used to mount the suction cup hinge 25 on the cabinet door 41 at an angle parallel to the cabinet door hinge 26.

[0034] The cylinder hinge 21, telescopic hinge 22, boom hinge 23, connecting rod hinge 24, suction cup hinge 25, and cabinet door hinge 26 are parallel to each other.

[0035] The telescopic cylinder 11, the boom 12, the connecting rod 13, and the suction cup assembly are connected together by various hinge shafts. The suction cup assembly and the cabinet door 41 form a whole. Both the suction cup assembly and the cabinet door 41 rotate around the cabinet door shaft 26.

[0036] In the aforementioned actuator, all hinge axes are parallel to each other, forming a planar mechanism. The degrees of freedom of the mechanism can be calculated using Grübler's formula for planar mechanisms: F = 3n - 2J1 - J2. The moving components n include: the cylinder of telescopic cylinder 11, the telescopic cylinder of telescopic cylinder 11, the main arm 12, the connecting rod 13, and the suction cup assembly and the cabinet door 41 forming a whole, totaling 5 components, n = 5. The lower pairs J1 include: 6 revolute pairs: cylinder hinge 21, telescopic hinge 22, main arm hinge 23, connecting rod hinge 24, suction cup hinge 25, and cabinet door hinge 26; and 1 prismatic pair: telescopic cylinder 11; totaling 7 components, J1 = 7. The higher pairs J2 are zero.

[0037] It can be calculated that the degree of freedom F = 3n - 2J1 - J2 = 3 * 5 - 2 * 7 - 0 = 1. Therefore, the degree of freedom of the actuator is 1.

[0038] In this application, the connection position between the suction cup assembly and the cabinet door 41 is not limited. The suction cup assembly can be installed on any suitable opening and closing position on the cabinet door 41 to adapt to cabinet doors 41 of different widths. After installing the suction cup assembly, the relative position between the mounting bracket and the cabinet door is adjusted according to the distance between the installation position of the suction cup assembly and the cabinet door hinge. The telescopic hinge shaft 22 is installed in the appropriate adjustment hole 1201, so that the stroke of the telescopic cylinder 11 can be adjusted to match the opening and closing angle, and the opening and closing function can be realized normally. It can adapt to a variety of cabinet doors of different heights without the need to prepare a variety of different boom 12 specifications, connecting rod 13 specifications and telescopic cylinder 11 stroke specifications for cabinet doors of different specifications. It has good adaptability.

[0039] Furthermore, the suction cup assembly of embodiment 9 includes two suction cups 15, which are connected by a connecting handle 14, and the suction cup hinge 25 is disposed on the connecting handle 14. Through the structure of the double-claw suction cup, on the one hand, it can stably connect the cabinet door 41, and on the other hand, it is beneficial for the suction cup hinge 25 to apply force evenly to the cabinet door 41.

[0040] Furthermore, the telescopic cylinder 11 includes a motor, a reducer, and a telescopic push rod. Compared with pneumatic or hydraulic telescopic cylinders, the telescopic cylinder 11 with an electric push rod has a simpler structure by reducing the air / oil circuit structure.

[0041] Example 2 like Figure 2 , Figure 3 As shown, the main difference between this embodiment and embodiment 1 is that the mounting frame includes a base frame 31 and a mounting platform 32. The cylinder hinge shaft 21 and the boom hinge shaft 23 are set on the mounting platform 32 in the form of columns. The bottom of the mounting platform 32 is provided with a slider. The mounting platform 32 is slidably mounted on the slide rail 33 on the top of the base frame 31 by the slider, so as to make lateral sliding adjustment relative to the closed cabinet door 41, thereby adjusting the fixed position of the mounting platform 32 and improving adaptability.

[0042] Furthermore, the base frame 31 is provided with connection holes 3102, and multiple sets of base frames 31 are bolted together in a row through the connection holes 3102. Each set of base frames 31 is provided with an installation platform 31 and an actuator, so that the multiple sets of actuators on the base frame 31 can match the multiple sets of cabinet doors 41 arranged in a row. In this way, multiple sets of base frames 31 can be assembled and arranged as needed through the connection holes 3102, so that the actuators can adapt to the multiple sets of cabinets 42 arranged in a row and the cabinets 42 with multiple cabinet doors 41, thereby improving adaptability.

[0043] The mounting platform 32 is mounted on the base frame 31 via the slide rail 33. When adjusting the door opening and closing test device, the actuator can be quickly slid laterally and adjusted. It is especially suitable for cabinets 42 with multiple cabinets 42 arranged in rows and cabinets 42 with multiple doors 41, reducing the difficulty of adjustment for staff and improving adaptability.

[0044] Furthermore, the base frame 31 is provided with pin holes 3101 arranged at equal intervals along the slide rail 33, and a pin is provided on the mounting platform 32. The pin can be inserted into different pin holes 3101 to fix the mounting platform 32. Through the pin and pin holes 3101, the mounting platform 32 can be fixed at different positions on the base frame 31.

[0045] Furthermore, the mounting platform 32 is a rectangular plate, with the cylinder hinge 21 and the boom hinge 23 positioned adjacent to two opposite sides of the mounting platform 32. The rectangular shape of the mounting platform 32 facilitates stable sliding; the oppositely positioned cylinder hinge 21 and boom hinge 23 allow for efficient use of the limited space on the mounting platform 32, and also efficiently utilize the space between the mounting platform 32 and the cabinet door 41, preventing interference between the mounting platform 32 and the base frame 31 during door opening and closing tests, thus improving adaptability.

[0046] Furthermore, the base frame 31 is formed by splicing aluminum alloy square tubes. By splicing aluminum alloy square tubes, the overall weight of the base frame 31 is reduced, making it easier for staff to move and adjust the position, thus improving adaptability.

[0047] Furthermore, the base frame 31 is provided with a track platform, and the slide rail 33 is installed on the track platform. The projection outline of the base frame 31, which is formed by the track platform and the aluminum alloy square tube, on the side of the mounting platform 32 where the large arm hinge 23 is located should be within the projection outline of the mounting platform 32 on that side, so as to make efficient use of the space between the mounting platform 32 and the cabinet door 41 and avoid interference. Meanwhile, the bottom support of the base frame 31 on the other side of the mounting platform 32 extends outward to improve the stability of the base frame 31.

[0048] Example 3 like Figure 1 , Figure 2 As shown, the main difference between this embodiment and Embodiment 1 or Embodiment 2 is that a Z-shaped linkage structure is formed between the telescopic cylinder, the main arm, and the connecting rod. Through this Z-shaped linkage structure, the telescopic cylinder 11 is positioned on the side of the main arm 12 away from the cabinet door 41, preventing the mounting frame and actuator from interfering with the door opening and closing test. Therefore, it can adapt to various cabinet door specifications, improving adaptability.

[0049] Furthermore, the mounting bracket is equipped with two cylinder hinge shafts. The main arm hinge shaft forms an isosceles triangle with the two cylinder hinge shafts as the base points, allowing the actuator to have two mirror-image mounting positions for testing left-opening and right-opening cabinet doors respectively. By changing the overall orientation of the telescopic cylinder 11, main arm 12, connecting rod 13, and suction cup assembly, it is possible to adapt to cabinet doors 41 with different opening directions for opening and closing tests, thereby improving adaptability.

[0050] In summary, the actuator composed of the telescopic cylinder 11, the boom 12, the connecting rod 13, and the suction cup assembly of this application is mounted on a mounting bracket. By allowing the telescopic cylinder 11 and the boom 12 to have different hinge positions, the suction cup assembly can be installed at a suitable position rather than a specific position on cabinet doors of different specifications. This allows the entire door opening and closing test device of one specification to be adapted to cabinet doors of different widths. For cabinet doors of different specifications, there is no need to replace the door opening and closing test device of other specifications or to replace the boom / connecting rod or adjust the telescopic cylinder. It has good compatibility and adaptability.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A closed display case door opening and closing test device, characterized in that, It includes a mounting frame and an actuator, the actuator comprising a telescopic cylinder, a boom, a connecting rod, and a suction cup assembly. The mounting bracket is equipped with a cylinder hinge shaft and a boom hinge shaft. The cylinder end and telescopic end of the telescopic cylinder are respectively connected to the cylinder hinge shaft and the telescopic hinge shaft; The main arm is connected sequentially to the telescopic hinge, the main arm hinge, and the connecting rod hinge along its length. The main arm is provided with at least two adjustment holes for mounting the telescopic hinge to adjust the distance between the telescopic hinge and the main arm hinge. The two ends of the connecting rod are respectively connected to the connecting rod hinge and the suction cup hinge on the suction cup assembly; The cylinder hinge, the telescopic hinge, the boom hinge, the connecting rod hinge, and the suction cup hinge are parallel to each other.

2. The closed display case door opening and closing test device according to claim 1, characterized in that, The mounting frame includes a base frame and a mounting platform. The cylinder hinge shaft and the boom hinge shaft are mounted on the mounting platform in the form of columns. The top of the base frame is provided with a slide rail, and the bottom of the mounting platform is provided with a slider to allow the mounting platform to slide laterally relative to the closed cabinet door to adjust its fixed position.

3. The closed display case door opening and closing test device according to claim 2, characterized in that, The base frame is provided with connecting holes, and multiple sets of the base frames are bolted together in a row through the connecting holes. Each set of base frames is provided with a corresponding actuator to match the multiple sets of cabinet doors arranged in a row.

4. The closed display case door opening and closing test device according to claim 2, characterized in that, The mounting platform is a rectangular plate, and the cylinder hinge shaft and the boom hinge shaft are respectively located near the two opposite sides of the mounting platform plate.

5. The closed display case door opening and closing test device according to claim 2, characterized in that, The base frame is provided with pin holes arranged at equal intervals along the direction of the slide rail, and a pin shaft is provided on the mounting platform. The pin shaft can be inserted into different pin holes to fix the mounting platform.

6. The closed display case door opening and closing test device according to claim 2, characterized in that, The base frame is formed by splicing aluminum alloy square tubes.

7. The closed display case door opening and closing test device according to any one of claims 1-6, characterized in that, The telescopic cylinder, the boom, and the connecting rod form a Z-shaped connecting rod structure.

8. The closed display case door opening and closing test device according to claim 7, characterized in that, The mounting bracket is provided with two cylinder hinge shafts. The upper arm hinge shaft serves as the vertex, and the two cylinder hinge shafts serve as the base, forming an isosceles triangle. This allows the actuator to have two mutually mirror-like mounting positions, which can be used to test left-opening and right-opening cabinet doors, respectively.

9. The closed display case door opening and closing test device according to claim 1, characterized in that, The suction cup assembly includes two suction cups connected by a connecting handle, and the suction cup hinge is located on the connecting handle.

10. The closed display case door opening and closing test device according to claim 1, characterized in that, The telescopic cylinder includes a motor, a reducer, and a telescopic push rod.

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