Door structure and high-temperature test box

Abstract

The utility model discloses a door structure and a high-temperature test box, and belongs to the technical field of door structures. The door structure comprises a door body, a sealing assembly and a transmission assembly. A rotatable door handle is arranged on the door body; the sealing assembly comprises a rotating part and a first sealing strip, the rotating part is rotatably arranged at the bottom of the door body, and the first sealing strip is arranged on the rotating part; the transmission assembly is used for being in transmission connection with a transmission shaft of the door handle and the rotating part so as to drive the first sealing strip to protrude out of or retract to the bottom of the door body after the rotating part rotates. According to the door structure provided by the embodiment of the utility model, the upward moving recovery of the first sealing strip is realized in the door opening process, and the downward moving sealing of the first sealing strip is realized when the door is closed in place, so that not only can the sealing performance between the door body and the ground be ensured when the door is closed, but also the problem that the first sealing strip is frequently worn when the door is opened can be avoided; therefore, the service life of the first sealing strip is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of door structure technology, specifically relating to a door structure and a high-temperature test chamber. Background Technology

[0002] High-temperature test chambers can simulate high-temperature environments and are used to test and determine the parameters and performance of electrical, electronic and other products and materials after temperature changes during high-temperature or constant-temperature testing.

[0003] In related technologies, a high-temperature test chamber includes a chamber body and a door, with one side of the door hinged to the door frame of the chamber body. The door is typically a floor-mounted door, meaning the bottom of the door directly contacts the ground (without a corresponding door frame at the bottom). Sealing strips are installed between the door and the top, left, and right sides of the door frame to achieve a seal, thus ensuring a high-temperature environment inside the high-temperature test chamber.

[0004] However, a gap still exists between the bottom of the door and the ground, resulting in poor sealing of the high-temperature test chamber. Furthermore, directly installing a sealing strip on the bottom of the door would cause frequent wear during opening and closing, preventing the strip from lasting long. Utility Model Content

[0005] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides a door structure and a high temperature test chamber. Its purpose is to realize the upward retraction of the first sealing strip during the opening process and the downward sealing of the first sealing strip when the door is closed. This not only ensures the sealing between the door and the ground when the door is closed, but also avoids the problem of frequent wear of the first sealing strip when the door is opened, thereby extending the service life of the first sealing strip.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a door structure, the door structure comprising a door body, a sealing assembly, and a transmission assembly;

[0007] The door is equipped with a rotatable door handle;

[0008] The sealing assembly includes a rotating part and a first sealing strip. The rotating part is rotatably arranged at the bottom of the door body, and the first sealing strip is provided on the rotating part.

[0009] The transmission assembly is used to drive the drive shaft of the door handle and the rotating part so that after the rotating part is driven to rotate, the first sealing strip protrudes or retracts to the bottom of the door body.

[0010] Optionally, the rotating part includes a drive shaft, a fixed shaft, a follower strip, and two connecting plates. The fixed shaft is fixedly arranged at the bottom of the door body. The two connecting plates are parallel and spaced apart, and are movably sleeved at both ends of the fixed shaft. The drive shaft is fixedly connected to one end of the two connecting plates. The output end of the transmission assembly is connected to the drive shaft. The follower strip is fixedly connected to the other end of the two connecting plates, and is parallel and spaced apart from the drive shaft. The first sealing strip is disposed on the bottom surface of the follower strip.

[0011] Optionally, the side of the follower bar has two parallel and spaced ear plates, and each ear plate is fixed to the corresponding connecting plate.

[0012] Optionally, the bottom surface of the door body has a groove, and the drive shaft, the fixed shaft and the follower bar are located in the groove.

[0013] Optionally, the transmission assembly includes a cam and a connecting rod, one end of the cam is sleeved on the drive shaft of the door handle, the top end of the connecting rod is hinged to the other end of the cam, and the bottom end of the connecting rod is movably connected to the rotating part.

[0014] Optionally, the transmission assembly includes a gear, a transmission rod, and a rack. The gear is sleeved on the transmission shaft of the door handle, the rack is located on the transmission rod and arranged along the axial direction of the transmission rod, the transmission rod is slidably arranged on the door body in the vertical direction, the rack meshes with the gear, and the bottom end of the transmission rod is movably connected to the rotating part.

[0015] Optionally, an insulation layer is inserted into the door body, and the transmission assembly is inserted into the insulation layer.

[0016] Optionally, a second sealing strip is provided on the top surface of the door and on the two opposite sides.

[0017] Optionally, the door has an observation hole, into which a transparent glass is inserted.

[0018] Secondly, this utility model provides a high-temperature test chamber, which includes a door structure as described in the first aspect.

[0019] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0020] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0021] (1) The door structure provided in this utility model embodiment realizes the upward retraction of the first sealing strip during the opening process and the downward sealing of the first sealing strip when closing the door. This not only ensures the sealing between the door and the ground when the door is closed, but also avoids the problem of frequent wear of the first sealing strip when the door is opened, thereby extending the service life of the first sealing strip.

[0022] (2) The door structure provided in this embodiment of the present invention has two connecting plates that can rotate freely relative to a fixed shaft, thereby stably driving the drive shaft and follower strip to rotate. When the transmission assembly drives the drive shaft to rotate relative to the fixed shaft, the connecting plates drive the follower strip to rotate, thereby ultimately driving the follower strip to rise and fall, and thus driving the first sealing strip to rise and fall. In addition, the drive shaft, follower strip and two connecting plates form a frame structure, which is stable in rotation.

[0023] (3) The door structure provided in this embodiment of the present invention has a groove at the bottom of the door body, in which the drive shaft, fixed shaft and follower bar are located. The groove can accommodate the drive shaft, fixed shaft and follower bar, avoiding the problem of damage caused by leakage of each component during use.

[0024] (4) The door structure provided in this utility model embodiment includes a cam and a connecting rod. One end of the cam is sleeved on the drive shaft of the door handle. The top end of the connecting rod is hinged to the other end of the cam. The bottom end of the connecting rod is movably connected to the other side of the rotating part. Thus, the cam's rotation leads to the connecting rod moving up or down, and ultimately to the rotating part rotating reliably.

[0025] (5) The door structure provided in this utility model embodiment includes a transmission component including a gear, a transmission rod and a rack. The gear is sleeved on the transmission shaft of the door handle, the rack is located on the transmission rod and arranged along the axial direction of the transmission rod, the transmission rod is slidably arranged on the door body in the vertical direction, the rack meshes with the gear, and the bottom end of the transmission rod is movably connected to the other side of the rotating part, so that the gear belt moves the rack and the transmission rod up or down, and finally moves the rotating part to rotate reliably.

[0026] (6) The present invention provides a door structure in which an insulation layer is inserted into the door body, and a transmission component is inserted into the insulation layer. On the one hand, the insulation layer can play a role in heat preservation, reducing heat damage. On the other hand, the insulation layer can accommodate and store the transmission component, avoiding the risk of damage to the externally mounted transmission component. Attached Figure Description

[0027] Figure 1 This is a first view of a door structure provided in an embodiment of the present utility model;

[0028] Figure 2 This is a second view of a door structure provided in an embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the transmission principle of a door structure provided in an embodiment of this utility model;

[0030] Figure 4 This is a schematic diagram of the rotating part provided in an embodiment of the present invention.

[0031] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0032] 1. Door body; 11. Door handle; 12. Second sealing strip; 13. Transparent glass; 2. Sealing assembly; 21. Rotating part; 211. Drive shaft; 212. Fixed shaft; 213. Follower strip; 2131. Ear plate; 214. Connecting plate; 22. First sealing strip; 3. Transmission assembly; 31. Cam; 32. Connecting rod; 33. Rotating shaft. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] Example:

[0039] Figure 1 This is a first view of a door structure provided in an embodiment of the present invention. Figure 2 This is a second view of a door structure provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the transmission principle of a door structure provided in an embodiment of this utility model, combined with... Figures 1-3 As shown, the door structure includes a door body 1, a sealing assembly 2, and a transmission assembly 3.

[0040] A rotatable door handle 11 is provided on the door body 1.

[0041] The sealing assembly 2 includes a rotating part 21 and a first sealing strip 22. The middle part of the rotating part 21 is rotatably arranged at the bottom of the door body 1, and the first sealing strip 22 is provided on the rotating part 21.

[0042] The transmission assembly 3 is used to drive the transmission shaft (i.e., the rotating shaft) of the door handle 11 and the other side of the rotating part 21 so that after the rotating part 21 is driven to rotate, the first sealing strip 22 protrudes or retracts to the bottom of the door body 1.

[0043] In the door structure provided in this embodiment of the utility model, the door body 1 is hinged to the door frame. When opening the door, the operator presses down the door handle 11 clockwise, simultaneously pushing the door body 1 to rotate. During the pressing down of the door handle 11, the drive shaft of the door handle 11 synchronously drives the transmission component 3. Based on the lever principle, the transmission component 3 drives the rotating part 21 to rotate. During the rotation of the rotating part 21, the first sealing strip 22 moves up to the bottom surface and above the door body 1, thus releasing the seal between the first sealing strip 22 and the ground, and the first sealing strip 22 is separated from the ground, thereby avoiding the problem of wear on the first sealing strip 22 during subsequent opening. Similarly, after closing the door, the operator lifts the door handle 11 counterclockwise. During the rotation of the rotating part 21, the first sealing strip 22 moves down to protrude from the bottom surface of the door body 1, thus resealing the gap between the door body 1 and the ground, and the first sealing strip 22 is in close contact with the ground, thereby ensuring the airtightness of the high-temperature test chamber when the door is closed.

[0044] In other words, the door structure provided by this utility model embodiment realizes the upward retraction of the first sealing strip 22 during the opening process, and the downward sealing of the first sealing strip 22 when the door is closed. This not only ensures the sealing between the door body 1 and the ground when the door is closed, but also avoids the problem of frequent wear of the first sealing strip 22 when the door is opened, thereby extending the service life of the first sealing strip 22.

[0045] It is easy to understand that the rotating part 21 provided by this utility model is rotatably arranged on the door body 1, and can drive the first sealing strip 22 to move stably downward during rotation, and the first sealing strip 22 is subjected to uniform force. This door structure not only meets the sealing requirements of the sweeping door, but also takes into account the ease of operation for the operator.

[0046] It should be noted that the first sealing strip 22 is set along the width direction of the door body 1 to achieve sealing of the entire bottom surface of the door body 1.

[0047] For example, the first sealing strip 22 can be a silicone sheet or other sealing structure.

[0048] In one implementation of this utility model, one end of the rotating part 21 is hinged to the door body 1, and the first sealing strip 22 is located at the other end of the rotating part 21. That is, at this time, the transmission component 3 directly drives the other end of the rotating part 21 to rotate and achieve lifting and lowering, thereby driving the first sealing strip 22 to lift and lower.

[0049] In another implementation of this utility model, the middle part of the rotating part 21 is hinged to the door body 1, as follows:

[0050] Figure 4 This is a schematic diagram of the rotating part provided in an embodiment of the present invention, as shown below. Figure 4As shown, the rotating part 21 includes a drive shaft 211, a fixed shaft 212, a follower bar 213, and two connecting plates 214. The fixed shaft 212 is fixedly arranged at the bottom of the door body 1. The two connecting plates 214 are parallel and spaced apart, and are movably sleeved on both ends of the fixed shaft 212. The drive shaft 211 is fixedly connected to one end of the two connecting plates 214. The output end of the transmission assembly 3 (i.e., the connecting rod or transmission rod mentioned later) is connected to the drive shaft 211. The follower bar 213 is fixedly connected to the other end of the two connecting plates 214, and is parallel and spaced apart from the drive shaft 211. The first sealing strip 22 is provided on the bottom surface of the follower bar 213.

[0051] In the above embodiment, the two connecting plates 214 can rotate freely relative to the fixed shaft 212, thereby stably driving the drive shaft 211 and the follower bar 213 to rotate. When the transmission assembly 3 drives the drive shaft 211 to rotate relative to the fixed shaft 212, the connecting plates 214 drive the follower bar 213 to rotate, thereby ultimately driving the follower bar 213 to rise and fall, and thus achieving the rising and falling of the first sealing strip 22. In addition, the drive shaft 211, the follower bar 213 and the two connecting plates 214 form a frame structure, which ensures stable rotation.

[0052] For example, the drive shaft 211, the fixed shaft 212, and the follower strip 213 are all perpendicular to the connecting plate 214. Preferably, the drive shaft 211, the fixed shaft 212, the follower strip 213, and the first sealing strip 22 are all parallel to the bottom surface of the door body 1, so that the first sealing strip 22 extends evenly out of the door body 1, making the sealing process more uniform.

[0053] Furthermore, the side of the follower bar 213 has two parallel and spaced ear plates 2131, and each ear plate 2131 is fixed on the corresponding connecting plate 214, thereby achieving a reliable connection between the follower bar 213 and the connecting plate 214 through the ear plates 2131.

[0054] For example, the ear plate 2131 and the connecting plate 214 are connected by bolts.

[0055] In addition, the bottom surface of the door body 1 has a groove in which the drive shaft 211, the fixed shaft 212, and the follower bar 213 are located. The groove can accommodate the drive shaft 211, the fixed shaft 212, and the follower bar 213, preventing damage to the components due to external leakage during use.

[0056] It should be noted that in other embodiments of this utility model, the rotating part 21 may also be configured in other structural forms, and this utility model does not limit this.

[0057] In one implementation of this utility model, see Figure 3The transmission assembly 3 includes a cam 31 and a connecting rod 32. One end of the cam 31 is sleeved on the drive shaft of the door handle 11. The top end of the connecting rod 32 is hinged to the other end of the cam 31, and the bottom end of the connecting rod 32 is movably connected to the rotating part 21. Thus, the rotation of the cam 31 leads to the connecting rod 32 moving up or down, and ultimately leads to the rotating part 21 rotating reliably.

[0058] For example, the bottom of the connecting rod 32 is slidably sleeved on the drive shaft 211. A vertically arranged rotating shaft 33 is provided on the cam 31, and the top end of the connecting rod 32 is movably sleeved on the rotating shaft 33.

[0059] In another implementation of this utility model, the transmission component 3 includes a gear, a transmission rod, and a rack. The gear is sleeved on the transmission shaft of the door handle 11, the rack is located on the transmission rod and arranged along the axial direction of the transmission rod, the transmission rod is slidably arranged on the door body in the vertical direction, the rack meshes with the gear, and the bottom end of the transmission rod is movably connected to the rotating part 21, so that the gear can move the rack and transmission rod up or down, and finally bring the rotating part 21 to rotate reliably.

[0060] For example, the bottom end of the transmission rod is hinged to the transmission shaft 211, and the hinge shaft clearance is set.

[0061] In this embodiment, an insulation layer is inserted into the door body 1, and the transmission component 3 is inserted into the insulation layer. On the one hand, the insulation layer can keep the door warm and reduce heat damage. On the other hand, the insulation layer can also house and store the transmission component 3, avoiding the risk of damage from an externally located component.

[0062] See Figure 1 The top surface and the two opposite sides of the door body 1 are provided with a second sealing strip 12, which can seal the top surface and the left and right sides of the door body 1.

[0063] It should be noted that the second sealing strip 12 can also be installed on the door frame corresponding to the door body 1.

[0064] In this embodiment, the door 1 has an observation hole, into which a transparent glass 13 is inserted, so that the inside of the door 1 can be easily observed through the transparent glass 13.

[0065] This utility model embodiment also provides a high temperature test chamber, which includes a door structure as described above.

[0066] It should be noted that the door structure provided by this utility model is not only applicable to high temperature test chambers, but also to other equipment fields that require door structure sealing.

[0067] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A door structure, characterized by, The door structure comprises a door body, a sealing assembly and a transmission assembly; The door body is provided with a rotatable door handle; The sealing assembly comprises a rotating part and a first sealing strip, the rotating part is rotatably arranged at the bottom of the door body, and the first sealing strip is arranged on the rotating part; The transmission assembly is used for drivingly connecting a transmission shaft of the door handle and the rotating part, so as to drive the rotating part to rotate and the first sealing strip to protrude or retract to the bottom of the door body.

2. A door structure according to claim 1, characterized in that The rotating part comprises a transmission shaft, a fixed shaft, a follower strip and two connecting plates, the fixed shaft is fixedly arranged at the bottom of the door body, the two connecting plates are parallel and spaced, and each is movably sleeved on both ends of the fixed shaft, one end of the transmission shaft is fixedly connected with the two connecting plates, an output end of the transmission assembly is drivingly connected with the transmission shaft, the other end of the two connecting plates is fixedly connected with the follower strip, and the follower strip is parallel and spaced with the transmission shaft, and the first sealing strip is arranged on the bottom surface of the follower strip.

3. A door structure according to claim 2, wherein The side edge of the follower strip has two parallel and spaced ear plates, and each ear plate is fixed on the corresponding connecting plate.

4. A door structure according to claim 2, wherein The bottom surface of the door body has a groove, and the transmission shaft, the fixed shaft and the follower strip are located in the groove.

5. The door structure of claim 1, wherein The transmission assembly comprises a cam and a connecting rod, one end of the cam is sleeved on the transmission shaft of the door handle, the top end of the connecting rod is hinged to the other end of the cam, and the bottom end of the connecting rod is movably connected with the rotating part.

6. A door structure according to claim 1, wherein The transmission assembly comprises a gear, a transmission rod and a rack, the gear is sleeved on the transmission shaft of the door handle, the rack is arranged on the transmission rod and along the axial direction of the transmission rod, the transmission rod is slidingly arranged on the door body in the vertical direction, the rack is engaged with the gear, and the bottom end of the transmission rod is movably connected with the rotating part.

7. A door construction according to any one of claims 1-6, c h a r a c t e r i s e d i n that The door body is provided with a heat preservation layer, and the transmission assembly is inserted in the heat preservation layer.

8. A door structure according to any one of claims 1-6, characterized in that The top surface and the two opposite side edges of the door body are provided with second sealing strips.

9. A door construction according to any one of claims 1-6, characterized in that The door body is provided with an observation hole, and the observation hole is provided with a transparent glass.

10. A high temperature test chamber characterized by, The high-temperature test box comprises the door structure according to any one of claims 1-9.

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