A refrigerator door durability testing device
By designing a compact refrigerator door durability test device, servo motors and vacuum suction cups are used to simulate the refrigerator door movement, the existing equipment has solved the problems of large land and low efficiency, and efficient and accurate testing has been achieved, improving safety and application prospects.
Patent Information
- Application Number
- CN201811459415.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-11-30
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2038-11-30
AI Technical Summary
The existing refrigerator door durability test equipment has large equipment, covering a large area and requiring full-process intervention by testers. It is inefficient and cannot meet the market's demand for continuous testing and reducing personnel intervention.
A compact refrigerator door durability test device is designed, including fixtures, rotary devices and lifting trolleys. The servo motor and vacuum suction cup are used to simulate the opening and closing action of the refrigerator door. The fixture forms a parallelogram mechanism through the hinge and adapter, and the servo motor drives the rotary arm. Simulates the rotation of the refrigerator door, the clamp can be adjusted in height, and the lifting car has free-moving casters.
It has achieved a small area and high efficiency refrigerator door durability test, improved data accuracy and significantly improved safety, reduced the dependence of manual operation, and has good application prospects.
Smart Images
Figure CN111256962B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of refrigerator door durability testing. Background Art
[0002] As people's living standards improve, more families need to store a certain amount of food, so refrigerators have undoubtedly become a necessity for every family. More and more families are increasing their demand for refrigerators, and their requirements for refrigerator performance are also increasing. Refrigerators must undergo safety certification and must meet relevant standard requirements.
[0003] Existing refrigerator door durability testing devices are all large-scale equipment, occupy a large area, require test personnel to intervene throughout the process, and have low efficiency.
[0004] Therefore, a refrigerator door durability testing device that can perform continuous testing, reduces personnel intervention, and occupies a relatively small area is more in line with the testing market needs. Summary of the invention
[0005] The purpose of the present invention is to solve the existing market and technical needs for refrigerator door durability testing and to provide a compact refrigerator door durability testing device.
[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:
[0007] A refrigerator door durability test device comprises a fixture 1, a rotating device 2, a lifting trolley 3 and a servo motor 4, wherein the fixture 1 is arranged on the lifting trolley 3 to fix the refrigerator body to be tested, the rotating device 2 is arranged on the lifting trolley 3 to simulate the opening and closing action of the refrigerator door, and the servo motor 4 is connected to the rotating device 2;
[0008] The rotating device 2 includes a vacuum suction cup 201, a first adapter 202, a connecting rod 203, a second adapter 204 and a rotating arm 205, one end of the connecting rod 203 is movably connected to the vacuum suction cup 201 through the first adapter 202, the other end of the connecting rod 203 is movably connected to the rotating arm 205 through the second adapter 204, and the other end of the rotating arm 205 is connected to the rotating shaft of the servo motor 4; a rotating point A is formed at the first adapter 202, a rotating point B is formed at the second adapter 204, a rotating point C is formed at the connection between the rotating arm 205 and the rotating shaft of the servo motor 4, and the hinge point of the refrigerator door to be tested is set as point D;
[0009] During the test, L AB =L CD , L BC =L AD , forming a parallelogram four-bar linkage, the rotation angle of the servo motor 4 is the rotation angle of the refrigerator hinge point D.
[0010] Furthermore, the clamp 1 includes a square bracket 101, a left guide rod 102, a right guide rod 103, a screw rod 104, a connecting plate 105, a screw nut assembly 106, a left clamping plate 107, a right clamping plate 108, a left fixing piece 109 and a right fixing piece 110. The left guide rod 102, the screw rod 104 and the right guide rod 103 are fixed on the square bracket 101 in parallel in sequence. The connecting plate 105 is movably connected with the left guide rod 102, the screw rod 104 and the right guide rod 103 in a transverse direction. The left clamping plate 107 and the right clamping plate 108 are arranged on the connecting plate 105; the left fixing piece 109 and the right fixing piece 110 are respectively arranged on the rear cross beam of the square bracket 101; the screw nut assembly 106 is fixed on the connecting plate 105, and the screw rod 104 is movably connected with the connecting plate 105 through the screw nut assembly 106.
[0011] Furthermore, a left linear bearing assembly 111 and a right linear bearing assembly 112 are also provided on the connecting plate 105 . The left guide rod 102 is provided in the left linear bearing assembly 111 , and the right guide rod 103 is provided in the right linear bearing assembly 112 .
[0012] Furthermore, a hinge 113 is provided on the rear crossbeam of the square bracket 101 for fixing the clamp 1 on the lifting trolley 3 .
[0013] Furthermore, a handle 114 is provided at the front end of the screw rod 104 , and rotating the handle 114 can push the screw rod nut assembly 106 to drive the connecting plate 105 to move forward and backward.
[0014] Furthermore, the lifting trolley 3 includes a base 301, a front vertical guide rod 302, a rear vertical guide rod 303, a front linear bearing 304, a fixed seat 305, a rear linear bearing 306 and a servo motor platform 307. The front vertical guide rod 302 is fixed on the base 301, the front linear bearing 304 is arranged on the front vertical guide rod 302, the fixed seat 305 is fixedly connected to the front linear bearing 304, the rear vertical guide rod 303 is fixed on the fixed seat 305, the rear linear bearing 306 is arranged on the rear vertical guide rod 303, and the servo motor platform 307 is fixedly connected to the rear linear bearing 306.
[0015] Furthermore, there are two rear vertical guide rods 303 , and adjustment linear bearings 311 are respectively provided on the two rear vertical guide rods 303 above the rear linear bearing 306 , and the two adjustment linear bearings 311 are connected by a consolidation plate 312 .
[0016] The front crossbeam of the clamp 1 is connected to the lifting trolley 3, and the position of the clamp 1 on the lifting trolley is adjusted according to the height of the refrigerator. Furthermore, the front crossbeam of the clamp 1 is fixed to the consolidation plate 312 through a hinge 113, and the height of the clamp 1 is adjusted by moving and adjusting the position of the linear bearing 311.
[0017] Furthermore, the base 301 of the lifting trolley 3 is also provided with four casters 308, so that the trolley 3 can move freely.
[0018] Furthermore, the lifting trolley 3 further includes a front connecting member 309 , which is laterally fixedly connected to the upper ends of the two front vertical guide rods 302 .
[0019] Furthermore, the lifting trolley 3 further includes a rear connecting member 310 , which is laterally fixedly connected to the upper ends of the two rear vertical guide rods 303 .
[0020] Beneficial effects of the present invention:
[0021] The refrigerator door durability test device provided by the present invention has an ingenious structural design, is simple and easy to manufacture, and occupies a small area. At the same time, the accuracy of the data required for the test is more accurate, and the safety is greatly improved. Compared with the existing large-scale simple equipment and manual operation, it is a great improvement and has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a front view of the overall structural schematic diagram of the refrigerator door durability testing device of the present invention.
[0023] Figure 2 It is a left side view of the overall structural schematic diagram of the refrigerator door durability testing device of the present invention.
[0024] Figure 3 It is a top view of the overall structural schematic diagram of the refrigerator door durability testing device of the present invention.
[0025] Figure 4 It is a top view of a schematic diagram of a fixture structure of a refrigerator door durability testing device of the present invention.
[0026] Figure 5 It is a front view of a schematic diagram of a fixture structure of a refrigerator door durability testing device of the present invention.
[0027] Figure 6 It is a left side view of the schematic diagram of the fixture structure of the refrigerator door durability testing device of the present invention.
[0028] Figure 7 It is a three-dimensional reference diagram of the structural schematic diagram of the lifting trolley of the refrigerator door durability testing device of the present invention.
[0029] Figure 8 It is a front view of the structural schematic diagram of the lifting trolley of the refrigerator door durability testing device of the present invention.
[0030] Fig. 9 It is a right side view of the structural schematic diagram of the lifting trolley of the refrigerator door durability testing device of the present invention.
[0031] Fig.10 It is a schematic diagram of a rotating device of a refrigerator door durability testing device of the present invention.
[0032] Description of reference numerals: DETAILED DESCRIPTION
[0033] like Figure 1-10 As shown, the refrigerator door durability test device provided by the present invention comprises a fixture 1, a rotating device 2, a lifting trolley 3 and a servo motor 4, wherein the fixture 1 is arranged on the lifting trolley 3 to fix the refrigerator body to be tested, the rotating device 2 is arranged on the lifting trolley 3 to simulate the opening and closing action of the refrigerator door, and the servo motor 4 is connected to the rotating device 2;
[0034] The rotating device 2 includes a vacuum suction cup 201, a first adapter 202, a connecting rod 203, a second adapter 204 and a rotating arm 205, one end of the connecting rod 203 is movably connected to the vacuum suction cup 201 through the first adapter 202, the other end of the connecting rod 203 is movably connected to the rotating arm 205 through the second adapter 204, and the other end of the rotating arm 205 is connected to the rotating shaft of the servo motor 4; a rotating point A is formed at the first adapter 202, a rotating point B is formed at the second adapter 204, a rotating point C is formed at the connection between the rotating arm 205 and the rotating shaft of the servo motor 4, and the hinge point of the refrigerator door to be tested is set as point D;
[0035] During the test, the distance between AB is equal to the distance between CD, and the distance between BC is equal to the distance between AD, that is, L AB =L CD , L BC =L AD , forming a parallelogram four-bar linkage, the angle of rotation of the servo motor 4 is the angle of rotation of the refrigerator hinge point D;
[0036] The fixture 1 comprises a square bracket 101, a left guide rod 102, a right guide rod 103, a screw rod 104, a connecting plate 105, a screw rod nut assembly 106, a left clamping plate 107, a right clamping plate 108, a left fixing member 109 and a right fixing member 110. The left guide rod 102, the screw rod 104 and the right guide rod 103 are fixed to the square bracket 101 in parallel in sequence. The connecting plate 105 is movably connected with the left guide rod 102, the screw rod 104 and the right guide rod 103 in a transverse direction. The left clamping plate 107 and the right clamping plate 108 are arranged on the connecting plate 105; the left fixing member 109 and the right fixing member 110 are respectively arranged on the rear cross beam of the square bracket 101 for stabilizing one side of the refrigerator sample; the screw rod nut assembly 106 is fixed to the connecting plate 105, and the screw rod 104 is movably connected with the connecting plate 105 through the screw rod nut assembly 106;
[0037] The lifting trolley 3 includes a base 301, a front vertical guide rod 302, a rear vertical guide rod 303, a front linear bearing 304, a fixed seat 305, a rear linear bearing 306 and a servo motor platform 307. The front vertical guide rod 302 is fixed on the base 301, the front linear bearing 304 is arranged on the front vertical guide rod 302, the fixed seat 305 is fixedly connected to the front linear bearing 304, the rear vertical guide rod 303 is fixed on the fixed seat 305, the rear linear bearing 306 is arranged on the rear vertical guide rod 303, and the servo motor platform 307 is fixedly connected to the rear linear bearing 306.
[0038] In one of the further preferred embodiments, a left linear bearing assembly 111 and a right linear bearing assembly 112 are provided on the connecting plate 105 , the left guide rod 102 is provided in the left linear bearing assembly 111 , and the right guide rod 103 is provided in the right linear bearing assembly 112 .
[0039] In a further preferred embodiment 2, a hinge 113 is further provided on the rear cross beam of the square bracket 101 for fixing the clamp 1 on the lifting trolley 3 .
[0040] In a further preferred embodiment 3, a handle 114 is provided at the front end of the screw rod 104. Rotating the handle 114 can push the screw rod nut assembly 106 to drive the connecting plate 105 to move forward and backward.
[0041] In a further preferred embodiment 4, there are two rear vertical guide rods 303, and adjustment linear bearings 311 are respectively provided on the two rear vertical guide rods 303 and above the rear linear bearings 306, and the two adjustment linear bearings 311 are connected by a consolidation plate 312. The front crossbeam of the clamp 1 is fixed to the consolidation plate 312 by a hinge 113, and the height of the clamp 1 is adjusted by moving the position of the adjustment linear bearings 311.
[0042] In a fifth further preferred embodiment, the base 301 of the lifting trolley 3 is further provided with four casters 308, so that the trolley 3 can move freely.
[0043] In a further preferred embodiment six, the lifting trolley 3 further comprises a front connecting member 309, which is laterally fixedly connected to the upper ends of the two front vertical guide rods 302. The lifting trolley 3 further comprises a rear connecting member 310, which is laterally fixedly connected to the upper ends of the two rear vertical guide rods 303.
[0044] When the refrigerator door durability testing device provided by the present invention is used for testing, the operation is as follows:
[0045] 1. Adjust the position of the linear bearing 311 on the mobile lifting trolley to lift the fixture 1 to the top height of the refrigerator 5 to be tested.
[0046] 2. Rotate the handle 114 of the screw rod on the clamp 1 to clamp the two sides of the refrigerator.
[0047] 3. Adjust the position of the rotating device so that L AB =L CD , L BC =L AD .
[0048] 4. Set the speed, frequency and angle of the servo motor and start running.
Claims
1. A refrigerator door durability testing device, characterized in that: The device comprises a fixture (1), a rotating device (2), a lifting trolley (3) and a servo motor (4); the fixture (1) is arranged on the lifting trolley (3) and is used to fix the main body of the refrigerator to be tested; the rotating device (2) is arranged on the lifting trolley (3) and is used to simulate the opening and closing action of the refrigerator door; and the servo motor (4) is connected to the rotating device (2); The rotating device (2) comprises a vacuum suction cup (201), a first adapter (202), a connecting rod (203), a second adapter (204) and a rotating arm (205); one end of the connecting rod (203) is movably connected to the vacuum suction cup (201) via the first adapter (202); the other end of the connecting rod (203) is movably connected to the rotating arm (205) via the second adapter (204); the other end of the rotating arm (205) is connected to the rotating shaft of the servo motor (4); a rotating point A is formed at the first adapter (202); a rotating point B is formed at the second adapter (204); a rotating point C is formed at the connection between the rotating arm (205) and the rotating shaft of the servo motor (4); and the hinge point of the refrigerator door to be tested is set as point D; During the test, L AB =L CD , L BC =L AD , forming a parallelogram four-bar linkage, the angle of rotation of the servo motor (4) is the angle of rotation of the hinge point D of the refrigerator; The clamp (1) comprises a square bracket (101), a left guide rod (102), a right guide rod (103), a screw rod (104), a connecting plate (105), a screw rod nut assembly (106), a left clamping plate (107), a right clamping plate (108), a left fixing member (109) and a right fixing member (110); the left guide rod (102), the screw rod (104) and the right guide rod (103) are fixed to the square bracket (101) in parallel in sequence; the connecting plate (105) is laterally movably connected to the left guide rod (102), the screw rod (104) and the right guide rod (103); the left clamping plate (107) and the right clamping plate (108) are arranged on the connecting plate (105); The left fixing member (109) and the right fixing member (110) are respectively arranged on the rear cross beam of the square bracket (101); the screw rod and nut assembly (106) are fixed on the connecting plate (105), and the screw rod (104) is movably connected to the connecting plate (105) through the screw rod and nut assembly (106); the connecting plate (105) is provided with a left linear bearing assembly (111) and a right linear bearing assembly (112); the left guide rod (102) is arranged in the left linear bearing assembly (111), and the right guide rod (103) is arranged in the right linear bearing assembly (112); the rear cross beam of the square bracket (101) is provided with a hinge (113) for fixing the clamp (1) on the lifting trolley (3).
2. The refrigerator door durability testing device according to claim 1, characterized in that: The front end of the screw rod (104) is provided with a handle (114) for pushing the screw rod nut assembly (106) to drive the connecting plate (105) to move forward and backward when the handle (114) is turned.
3. The refrigerator door durability testing device according to claim 1, characterized in that: The lifting trolley (3) comprises a base (301), a front vertical guide rod (302), a rear vertical guide rod (303), a front linear bearing (304), a fixed seat (305), a rear linear bearing (306) and a servo motor platform (307), wherein the front vertical guide rod (302) is fixed on the base (301), the front linear bearing (304) is arranged on the front vertical guide rod (302), the fixed seat (305) is fixedly connected to the front linear bearing (304), the rear vertical guide rod (303) is fixed on the fixed seat (305), the rear linear bearing (306) is arranged on the rear vertical guide rod (303), and the servo motor platform (307) is fixedly connected to the rear linear bearing (306).
4. The refrigerator door durability testing device according to claim 3, characterized in that: There are two rear vertical guide rods (303), and adjustment linear bearings (311) are respectively provided on the two rear vertical guide rods (303) above the rear linear bearing (306), and the two adjustment linear bearings (311) are connected via a consolidation plate (312).
5. The refrigerator door durability testing device according to claim 4, characterized in that: The front crossbeam of the clamp (1) is fixed to the consolidation plate (312) via a hinge (113), and the height of the clamp (1) is adjusted by moving and adjusting the position of the linear bearing (311).
6. The refrigerator door durability testing device according to claim 3, characterized in that: The base (301) of the lifting trolley (3) is also provided with four casters (308).
7. The refrigerator door durability testing device according to claim 3, characterized in that: The lifting trolley (3) further comprises a front connecting member (309) and a rear connecting member (310), wherein the front connecting member (309) is transversely fixedly connected to the upper ends of the two front vertical guide rods (302); and the rear connecting member (310) is transversely fixedly connected to the upper ends of the two rear vertical guide rods (303).