A constant temperature and humidity test chamber sample rack fixing device

Abstract

This utility model discloses a sample rack fixing device for a constant temperature and humidity test chamber, relating to the field of test chamber technology. The device includes a main body of the constant temperature and humidity test chamber, with two fixing brackets fixedly connected to both sides of the main body. A double fixing structure is formed by the insertion of insert plates into slots and the engagement of locking blocks into slots, effectively preventing the sample rack from shaking. After the locking block engages with the slot, rotating the handle drives the limiting plate to rotate within the fixing cylinder, causing the rubber limiting slider to slide into the horizontal groove of the "L"-shaped limiting slide groove. The limiting slider and the horizontal groove are interference-fitted, further limiting the locking block. This effectively avoids the locking block loosening due to vibrations caused by internal airflow circulation during test chamber operation and thermal expansion and contraction of materials caused by temperature and humidity changes, ensuring the stability of the sample rack installation and providing reliable protection for the test.

Description

Technical Field

[0001] This utility model relates to the field of test chamber technology, and in particular to a sample rack fixing device for a constant temperature and humidity test chamber. Background Technology

[0002] As a key environmental simulation device, constant temperature and humidity test chambers play an indispensable role in many fields. They can accurately simulate different temperature and humidity conditions, providing a stable testing environment for products. They are widely used in many industries such as electronics, electrical appliances, communications, instrumentation, vehicles, plastic products, metals, food, chemicals, building materials, medical, and aerospace to test the performance of products under various environments, such as the product's temperature resistance, humidity resistance, cold resistance, dryness resistance, and performance stability. This helps companies evaluate product quality, improve product design, enhance product reliability, and ensure that products can operate stably in complex real-world environments.

[0003] Existing sample rack fixing devices for constant temperature and humidity test chambers often employ complex bolt tightening methods. During installation, operators need to use various tools to precisely align the threaded holes and tighten the bolts one by one. This process is not only time-consuming and labor-intensive, but also extremely difficult to operate in the limited space inside the test chamber. Some fixing devices use snap-fit ​​connections, but these snap-fit ​​structures are often poorly designed. During the operation of the test chamber, vibrations caused by internal airflow circulation and thermal expansion and contraction of materials due to temperature and humidity changes can easily cause the snap-fit ​​to loosen, thus affecting the stability of the sample rack installation. Therefore, we propose a sample rack fixing device for constant temperature and humidity test chambers. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a sample rack fixing device for a constant temperature and humidity test chamber. This device can solve the problem that some existing sample rack fixing devices for constant temperature and humidity test chambers use complex bolt fastening methods. During installation, operators need to use a variety of tools to accurately align the threaded holes and tighten the bolts one by one. This process is not only time-consuming and labor-intensive, but also extremely difficult to operate in the limited operating space of the test chamber. Some fixing devices use snap-fit ​​connections, but these snap-fit ​​structures are often not reasonably designed. During the operation of the test chamber, due to the vibration generated by the internal airflow circulation and the thermal expansion and contraction of materials caused by temperature and humidity changes, the snap-fit ​​is prone to loosening, which in turn affects the stability of the sample rack installation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sample rack fixing device for a constant temperature and humidity test chamber, comprising: The main body of the constant temperature and humidity test chamber has two fixed brackets on both sides inside the main body of the constant temperature and humidity test chamber. The mounting structure is located on the main body of the constant temperature and humidity test chamber. The mounting structure includes a sample placement rack, four fixing plates, two support plates, and two insert plates. The four fixing plates are all fixedly connected to their corresponding support plates and threaded onto their respective fixing frames. The sample placement rack contacts the tops of the two support plates. Each of the two support plates has a slot on one side. The two insert plates are all fixedly connected to the bottom of the sample placement rack and insert into their corresponding slots. Each of the two insert plates has a locking groove on its top. The bottoms of the two support plates are all fixedly connected to fixing cylinders. Each of the two fixing cylinders has two limiting grooves inside. Each of the two fixing cylinders has a limiting plate slidably connected inside. Each of the two limiting plates has two limiting sliders fixedly connected to its outer surface. All four limiting sliders slidably connect to the interior of their corresponding limiting grooves.

[0006] Preferably, the mounting structure further includes two locking blocks, two connecting rods, two springs, and two pull handles. The two locking blocks are rotatably connected to the top of the corresponding limiting plate, and the two locking blocks slide into the interior of the corresponding slot and engage with the corresponding slot. The two connecting rods are fixedly connected to the bottom of the corresponding limiting plate, and the bottom ends of the two connecting rods slide to the outside of the corresponding fixing cylinder. The two pull handles are fixedly connected to the bottom end of the corresponding connecting rod, and the two springs are sleeved on the outside of the corresponding connecting rod.

[0007] Preferably, there are two mounting structures, both of which are installed inside the main body of the constant temperature and humidity test chamber.

[0008] Preferably, the top end of the spring is fixedly connected to the limiting plate, and the bottom end of the spring is fixedly connected to the inside of the fixed cylinder.

[0009] Preferably, the two fixing cylinders are symmetrically arranged on the sample placement rack.

[0010] Preferably, the card block has a trapezoidal structure.

[0011] Preferably, the limiting groove has an "L" shaped structure.

[0012] Preferably, the limiting slider is made of rubber, and the limiting slider and the limiting groove are internally interference-fitted.

[0013] Preferably, the insert plate has a "T" shaped structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The sample rack fixing device of this constant temperature and humidity test chamber forms a double fixing structure through the insertion of the insert plate and the slot, and the locking of the block and the slot. This effectively prevents the sample rack from shaking. After the block is locked into the slot, rotating the handle drives the limiting plate to rotate in the fixing cylinder, so that the rubber limiting slider slides into the horizontal groove of the "L"-shaped limiting slide groove. The limiting slider and the horizontal groove are interference fit, which further limits the block. This effectively avoids the block from loosening due to vibration caused by the internal airflow circulation during the operation of the test chamber and the thermal expansion and contraction of the material caused by temperature and humidity changes. This ensures the stability of the sample rack installation and provides a reliable guarantee for the test. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the support plate structure of this utility model; Figure 3 This is a schematic diagram of the insert plate structure of this utility model; Figure 4 This is a schematic diagram of the fixed cylinder structure of this utility model; Figure 5 This is a schematic diagram of the card block structure of this utility model.

[0016] Reference numerals in the attached diagram: 1. Main body of the constant temperature and humidity test chamber; 2. Sample placement rack; 3. Fixing frame; 4. Support plate; 5. Slot; 6. Fixing cylinder; 7. Insert plate; 8. Card slot; 9. Card block; 10. Limiting plate; 11. Connecting rod; 12. Spring; 13. Limiting slide groove; 14. Limiting slider; 15. Pull handle; 16. Fixing plate. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a sample rack fixing device for a constant temperature and humidity test chamber, comprising: The main body 1 of the constant temperature and humidity test chamber has two fixed brackets 3 fixedly connected to both sides inside the main body 1 of the constant temperature and humidity test chamber; The mounting structure is located on the main body 1 of the constant temperature and humidity test chamber; The mounting structure includes a sample placement rack 2, four fixing plates 16, two support plates 4, and two insert plates 7. The four fixing plates 16 are all fixedly connected to the corresponding support plates 4, and the four fixing plates 16 are all threadedly installed on the corresponding fixing frames 3. The sample placement rack 2 is in contact with the top of the two support plates 4. Each of the two support plates 4 has a slot 5 on one side. The two insert plates 7 are all fixedly connected to the bottom of the sample placement rack 2. The insert plates 7 have a "T" shaped structure. Both insert plates 7 are inserted into the interior of the corresponding slot 5. Each of the two insert plates 7 has a slot 8 on its top.

[0022] The bottom of each of the two support plates 4 is fixedly connected to a fixing cylinder 6. The two fixing cylinders 6 are symmetrically arranged on the sample placement rack 2. Each of the two fixing cylinders 6 has two limiting grooves 13 inside. Each of the two fixing cylinders 6 has a limiting plate 10 slidably connected inside. Each of the two limiting plates 10 has two limiting sliders 14 fixedly connected to the outer surface of the two limiting plates 10. The four limiting sliders 14 are slidably connected to the inside of the corresponding limiting groove 13. The limiting groove 13 has an "L" shaped structure. The limiting sliders 14 are made of rubber. The limiting sliders 14 and the limiting groove 13 are interference-fitted.

[0023] The mounting structure also includes two locking blocks 9, two connecting rods 11, two springs 12, and two pull handles 15. The two locking blocks 9 are rotatably connected to the top of the corresponding limiting plate 10. The locking blocks 9 are trapezoidal in shape. The two locking blocks 9 slide into the interior of the corresponding slot 5 and engage with the corresponding slot 8. The two connecting rods 11 are fixedly connected to the bottom of the corresponding limiting plate 10. The bottom ends of the two connecting rods 11 slide to the outside of the corresponding fixing cylinder 6. The two pull handles 15 are fixedly connected to the bottom ends of the corresponding connecting rods 11. The two springs 12 are sleeved on the outside of the corresponding connecting rods 11.

[0024] There are two mounting structures, both of which are set inside the main body 1 of the constant temperature and humidity test chamber. The top end of the spring 12 is fixedly connected to the limiting plate 10, and the bottom end of the spring 12 is fixedly connected to the inside of the fixing cylinder 6.

[0025] Furthermore, when using this device, two fixing frames 3 are fixed on both sides of the inside of the constant temperature and humidity test chamber body 1. The two support plates 4 are threaded onto the corresponding fixing frames 3 through the four fixing plates 16 fixed on them, thus completing the initial fixing of the support plates 4 inside the constant temperature and humidity test chamber body 1. The sample placement rack 2 is placed on top of the two support plates 4, so that the two "T"-shaped insert plates 7 at the bottom of the sample placement rack 2 are aligned with the slots 5 opened on one side of the two support plates 4 respectively, and the insert plates 7 are inserted into the slots 5.

[0026] During the insertion of the insert plate 7 into the slot 5, both limiting sliders 14 are rotated into the vertical groove of the limiting slide groove 13. Since the locking block 9 has a trapezoidal structure, the insert plate 7 will squeeze the locking block 9, causing the locking block 9 to drive the limiting plate 10 to slide downward in the fixed cylinder 6. The two rubber limiting sliders 14 fixed on the outer surface of the limiting plate 10 slide in the "L"-shaped limiting slide groove 13 opened inside the fixed cylinder 6. At the same time, the limiting plate 10 compresses the spring 12 sleeved on the outside of the connecting rod 11.

[0027] When the insert plate 7 is fully inserted into the slot 5, and the slot 8 on the top of the insert plate 7 moves to the position corresponding to the card block 9, the spring 12 returns to its original deformation, pushing the limiting plate 10 to move upward, thereby causing the card block 9 to slide upward and lock into the slot 8, thus achieving a fixed connection between the sample placement rack 2 and the support plate 4. Finally, the pull handle 15 is rotated so that the pull handle 15 can drive the limiting plate 10 to rotate in the fixed cylinder 6, thereby facilitating the limiting plate 10 to drive the two limiting sliders 14 to slide into the horizontal slots of the corresponding limiting slide grooves 13, thereby facilitating the limiting of the card block 9. The vertical slots of the limiting sliders 14 and the limiting slide grooves 13 are conventionally slidably connected, and the horizontal slots of the limiting sliders 14 and the limiting slide grooves 13 are interference fits.

[0028] The double fixing structure formed by the insertion of the insert plate 7 and the slot 5, and the locking of the block 9 and the slot 8, effectively prevents the sample placement rack 2 from shaking. After the block 9 is locked into the slot 8, the pull handle 15 is rotated to drive the limiting plate 10 to rotate in the fixed cylinder 6, so that the rubber limiting slider 14 slides into the horizontal groove of the "L"-shaped limiting slide groove 13. The limiting slider 14 and the horizontal groove are interference fit, which further limits the block 9. This effectively avoids the situation where the block 9 becomes loose due to the vibration caused by the internal airflow circulation during the operation of the test chamber and the thermal expansion and contraction of the material caused by temperature and humidity changes. This ensures the stability of the sample placement rack 2 installation and provides a reliable guarantee for the test.

[0029] Structural Description: Main Body 1 of the Constant Temperature and Humidity Test Chamber: Serves as the supporting foundation for the entire device, providing installation and operating space for the internal sample rack fixing structure and the test environment; Fixture 3: Used to connect with the fixing plate 16 on the support plate 4, providing a mounting point for the support plate 4; Sample rack 2: Used to place test samples and provide a support platform for the samples; Fixed plate 16: Threaded connection with fixed frame 3 to fix support plate 4 inside the body 1 of constant temperature and humidity test chamber; Support plate 4: Supports sample rack 2 and provides a support base for the installation of sample rack 2; Insert plate 7: It is inserted into slot 5 and serves as a preliminary positioning and connection for sample placement rack 2; Slot 5: Cooperates with insert plate 7 to achieve initial connection between sample placement rack 2 and support plate 4; Slot 8: Engages with the card block 9 to further secure the sample holder 2 and prevent it from becoming loose; Fixed cylinder 6: Provides installation space and motion guidance for internal components such as limiting disc 10 and spring 12; Limiting plate 10: slides and rotates within the fixed cylinder 6, driving the locking block 9 and the limiting slider 14 to move; Limiting groove 13: restricts the movement trajectory of limiting slider 14 and guides it to slide in the vertical and horizontal grooves; Limiting slider 14: slides within the limiting slide groove 13, and limits the limiting disk 10 when it is interference-fitted with the transverse groove of the limiting slide groove 13; Card block 9: engages with card slot 8 to achieve a fixed connection between sample placement rack 2 and support plate 4; Connecting rod 11: connects the limiting plate 10 and the pull handle 15, and transmits pulling force and rotational force; Spring 12: Provides elastic force to push the limit plate 10 upward, so that the locking block 9 is engaged in the slot 8; Pull handle 15: makes it easy for the operator to pull or rotate the connecting rod 11, thereby controlling the movement of the limit plate 10.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A sample rack fixing device for a constant temperature and humidity test chamber, characterized by, include: The main body of the constant temperature and humidity test chamber (1) has two fixed brackets (3) fixedly connected to both sides inside the main body of the constant temperature and humidity test chamber (1). The mounting structure is located on the main body (1) of the constant temperature and humidity test chamber; The installation structure includes a sample placement rack (2), four fixing plates (16), two support plates (4) and two insert plates (7). The four fixing plates (16) are fixedly connected to the corresponding support plates (4), and the four fixing plates (16) are threadedly installed on the corresponding fixing frame (3). The sample placement rack (2) is in contact with the top of the two support plates (4), and a slot (5) is provided on one side of each of the two support plates (4). Two insert plates (7) are fixedly connected to the bottom of the sample placement rack (2). Both insert plates (7) are inserted into the corresponding slots (5). The top of both insert plates (7) is provided with slots (8). The bottom of both support plates (4) is fixedly connected with fixed cylinders (6). The inside of both fixed cylinders (6) is provided with two limiting grooves (13). The inside of both fixed cylinders (6) is slidably connected with limiting disks (10). The outer surface of both limiting disks (10) is fixedly connected with two limiting sliders (14). The four limiting sliders (14) are slidably connected to the inside of the corresponding limiting grooves (13).

2. The sample holder fixture for a constant temperature and humidity test chamber according to claim 1, wherein: The installation structure also includes two locking blocks (9), two connecting rods (11), two springs (12) and two pull handles (15). The two locking blocks (9) are rotatably connected to the top of the corresponding limiting plate (10). The two locking blocks (9) slide into the interior of the corresponding slot (5) and engage with the corresponding slot (8). Among them, the two connecting rods (11) are fixedly connected to the bottom of the corresponding limiting plate (10), the bottom ends of the two connecting rods (11) slide to the outside of the corresponding fixed cylinder (6), the two pull handles (15) are fixedly connected to the bottom end of the corresponding connecting rod (11), and the two springs (12) are sleeved on the outside of the corresponding connecting rod (11).

3. The sample rack fixing device for a constant temperature and humidity test chamber according to claim 1, characterized in that: The number of installation structures is two, and both installation structures are set inside the main body (1) of the constant temperature and humidity test chamber.

4. The sample holder fixture for a constant temperature and humidity test chamber according to claim 2, wherein: The top end of the spring (12) is fixedly connected to the limiting plate (10), and the bottom end of the spring (12) is fixedly connected to the inside of the fixing cylinder (6).

5. The sample holder fixture for a constant temperature and humidity test chamber as claimed in claim 1, wherein: The two fixed cylinders (6) are symmetrically arranged on the sample placement rack (2).

6. The sample holder fixture for a constant temperature and humidity test chamber as claimed in claim 2, wherein: The card block (9) has a trapezoidal structure.

7. The sample holder fixture for a constant temperature and humidity test chamber as claimed in claim 1, wherein: The limiting groove (13) has an "L" shaped structure.

8. The sample holder fixture for a constant temperature and humidity test chamber according to claim 1, wherein: The limiting slider (14) is made of rubber, and the limiting slider (14) and the limiting groove (13) are internally interference fit.

9. The sample rack fixing device for a constant temperature and humidity test chamber according to claim 1, characterized in that: The insert plate (7) has a "T" shaped structure.

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