Connecting device and air conditioner overhaul plate

Abstract

The utility model relates to the technical field of connecting instruments, and provides a connecting device and an air conditioner overhaul plate. The connecting device is used for connecting a first device and a second device; the connecting device comprises a connecting unit and an unlocking unit; the connecting unit comprises a locking state and an unlocking state, and in the locking state, the connecting unit can be connected with the first device and the second device; in the unlocking state, the first device and the second device can be separated; and the unlocking unit can be connected with the connecting unit and is used for switching the connecting unit from the locking state to the unlocking state. When the connecting device needs to be disassembled, the unlocking unit needs to be relied on, the connecting unit is unlocked through the unlocking unit, and the unlocking unit is generally not provided by non-professionals, so that the connecting device can be effectively prevented from being disassembled by the non-professionals, and the technical problem that the connecting device is disassembled in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting devices, in particular to a connecting device and an air conditioner repair panel. Background Art

[0002] The connecting device or the connecting piece is used to connect the first connecting device and the second connecting device.

[0003] With the continuous development of society, systems such as air conditioners have been widely used. Taking air conditioners as an example, connection devices are usually used when air conditioners are installed.

[0004] However, the internal structure of the air conditioner is complex, and the anti-disassembly design of the connecting device in the prior art is not perfect enough. If non-professionals (users) privately dismantle the connecting device to remove the air conditioner, serious safety accidents such as electric shock and fire may occur.

[0005] In view of this, there is an urgent need to develop a connection device that can effectively prevent non-professionals from disassembling. Utility Model Content

[0006] The utility model provides a connecting device and an air conditioner repair plate, which are used to solve the technical problem of the connecting device being disassembled in the prior art.

[0007] The utility model provides a connecting device, which is used for connecting a first device and a second device; the connecting device comprises a connecting unit and an unlocking unit; the connecting unit comprises a locking state and an unlocking state, in which the connecting unit can connect the first device and the second device; in the unlocking state, the first device and the second device can be separated; the unlocking unit can be connected to the connecting unit, and is used for switching the connecting unit from the locking state to the unlocking state.

[0008] According to one embodiment of the utility model, the first device has a first connecting hole; the second device has a second connecting hole; the connecting unit can pass through the first connecting hole and the second connecting hole in the locked state to connect the first device and the second device.

[0009] According to one embodiment of the utility model, the connecting unit includes a connecting mechanism and a locking mechanism; the connecting mechanism can be inserted into the first device and the second device through the first connecting hole and the second connecting hole in the locked state to connect the first device and the second device; the locking mechanism can connect the connecting mechanism to put the connecting unit in a locked state.

[0010] According to one embodiment of the utility model, the connecting mechanism includes an expansion connection structure and an expansion control structure; the expansion connection structure is located in the first connection hole and the second connection hole, and the expansion connection structure has an inner cavity, and the inner cavity runs through both ends of the expansion connection structure; the expansion connection structure is in an expanded state in a locked state to press against the hole wall of the first connection hole and the hole wall of the second connection hole; the expansion connection structure is in a contracted state in an unlocked state, so that there is a gap between the expansion connection structure and the first connection hole and the second connection hole respectively; the expansion control structure is located in the inner cavity and can be movably connected to the cavity wall of the inner cavity, and the expansion control structure is in an expansion engaging position in the locked state; the expansion control structure is in a contracted unlocking position in the unlocked state; the locking mechanism can extend into the inner cavity and drive the expansion control structure to move, so that the expansion control structure moves from the contracted unlocking position to the expansion engaging position.

[0011] According to one embodiment of the utility model, the expansion connection structure includes a first connection component and a second connection component which are connected in sequence along their axial direction; a step is formed between the first connection component and the second connection component; the step abuts against the edge of the first connection hole or the edge of the second connection hole in a locked state; the second connection component is located in the first connection hole and the second connection hole, and includes a plurality of guide portions and a plurality of expansion portions; the plurality of guide portions are arranged on the end of the first connection component and are arranged at intervals along the circumference of the first connection component, and the inner side of the guide portion has a slide groove arranged along the axial direction of the expansion connection structure.

[0012] According to one embodiment of the utility model, the expansion control structure can slide and connect the slide groove; there is an expansion part between each adjacent guide part, and the expansion part is connected to the first connecting component; the expansion part is inclined outwardly along the direction from the first connecting component to the second connecting component in a locked state; the expansion part is inclined inwardly along the direction from the first connecting component to the second connecting component in an unlocked state; the expansion engaging position is located at the free end of the expansion part; and the contraction unlocking position is located at the connecting end of the expansion part.

[0013] According to one embodiment of the utility model, the free end of the expansion part has a card slot; the outer peripheral wall of the expansion control structure is provided with a plurality of buckles, and the center of the expansion control structure is provided with a screw hole; the locking mechanism has a threaded section matching the screw hole, and the locking mechanism can extend into the screw hole in the locked state, and drive the expansion control structure to slide along the extension direction of the slide groove, so that the expansion control structure moves from the contracted unlocking position to the expanded engaging position; the locking mechanism is located outside the inner cavity in the unlocked state.

[0014] According to an embodiment of the present invention, the unlocking unit can extend into the screw hole in the unlocked state, and can drive the expansion control structure to move from the expanded engaging position to the contracted unlocking position.

[0015] According to one embodiment of the utility model, the unlocking unit includes a disassembly mechanism and a disassembly matching mechanism; the disassembly mechanism includes a supporting structure and an entry hole structure; the supporting structure is provided with a through hole; the entry hole structure is arranged on the supporting structure, and the entry hole structure is located outside the screw hole in the locked state; the entry hole structure can extend into the screw hole in the unlocked state, and the entry hole structure includes a first entry hole component and a second entry hole component arranged relatively to each other; the facing sides of the first entry hole component and / or the second entry hole component have a groove connected to the through hole; the disassembly matching mechanism can extend into the groove through the through hole in the locked state, so that the disassembly matching mechanism is clamped between the first entry hole component and the second entry hole component, and the first entry hole component and the second entry hole component are respectively against the hole walls of the screw hole; the disassembly matching mechanism is located outside the groove in the unlocked state.

[0016] The utility model also provides an air-conditioning inspection panel, comprising an inspection panel body and a connecting device as in the above-mentioned embodiment, the connecting device comprising a connecting unit; the inspection panel body covers the air-conditioning inspection port of the indoor ceiling structure, and the inspection panel body is arranged on the indoor ceiling structure through the connecting unit.

[0017] The characteristics and advantages of the connecting device and the air conditioner repair panel of the utility model are:

[0018] The connecting device includes a connecting unit (or a lock) and an unlocking unit (or a key). The connecting unit not only has the function of an ordinary connecting part (such as a fastener) for connecting the first connecting device and the second connecting device, but also can lock itself. When the connecting device needs to be disassembled, it is necessary to rely on the unlocking unit to unlock the connecting unit. The unlocking unit is generally not available to non-professionals (users). Therefore, it can effectively prevent non-professionals from disassembling the connecting device, thereby solving the technical problem of the connecting device being disassembled in the prior art.

[0019] That is, the unlocking unit, as a key control component, gives the connecting device the ability to smoothly and controllably switch to the unlocked state through authorized operation when necessary. This feature allows only professionals with professional knowledge and skills to release the connection between the first device and the second device by correctly operating the unlocking unit when regular maintenance, inspection or replacement is required, thereby avoiding serious safety accidents such as electric shock and fire caused by improper operation by non-professionals. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the connecting device of the utility model during use.

[0022] Figure 2 It is a stereogram of the connecting mechanism of the utility model.

[0023] Figure 3 It is an exploded view of the connection unit of the utility model.

[0024] Figure 4 It is an exploded view of the unlocking unit of the utility model.

[0025] Figure 5 It is a cross-sectional view of the connecting mechanism of the utility model.

[0026] Figure 6 It is a cross-sectional view of the connecting mechanism and the unlocking unit of the utility model.

[0027] Figure 7 It is a schematic diagram of the steps from locking to unlocking of the connecting device of the utility model.

[0028] Reference numerals:

[0029] 100, connecting device; 110, connecting unit; 111, connecting mechanism; 1101, expansion connection structure; 1110, inner cavity; 1120, first connecting assembly; 1130, second connecting assembly; 1131, guide portion; 1310, slide groove; 1132, expansion portion; 1320, clamping groove; 1140, step; 1102, expansion control structure; 1121, buckle; 1122, screw hole; 112, locking mechanism; 120, unlocking unit; 121, disassembly mechanism; 1201, supporting structure; 1211, perforation; 1212, handle; 1202, inlet hole structure; 1221, first inlet hole assembly; 1222, second inlet hole assembly; 1223, groove; 1224, lifting part; 122, disassembly matching mechanism; 200, first device; 210, indoor ceiling structure; 211, air conditioning inspection port; 212, first connecting hole; 300, second device; 310, inspection plate; 311, second connecting hole; O, axial direction of expansion connection structure. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] Figures 1 to 7The connecting device 100 and the air conditioner inspection panel provided by the utility model are shown. As can be seen from the figure, the connecting device 100 of the utility model is used to connect the first device 200 and the second device 300; the connecting device 100 includes a connecting unit 110 and an unlocking unit 120; the connecting unit 110 includes a locked state and an unlocked state. In the locked state, the connecting unit 110 can connect the first device 200 and the second device 300; in the unlocked state, the first device 200 and the second device 300 can be separated; the unlocking unit 120 can be connected to the connecting unit 110, and is used to switch the connecting unit 110 from the locked state to the unlocked state.

[0036] In a specific implementation, the connecting device 100 includes a connecting unit 110 (or a lock) and an unlocking unit 120 (or a key). The connecting unit 110 not only has the function of an ordinary connecting member (such as a fastener) for connecting the first connecting device 100 and the second connecting device 100, but also can lock itself; when the connecting device 100 needs to be disassembled, it is necessary to rely on the unlocking unit 120 to unlock the connecting unit 110. The unlocking unit 120 is generally not available to non-professionals (users). Therefore, it is possible to effectively prevent the connecting device 100 from being disassembled by non-professionals, thereby solving the technical problem of the connecting device 100 being disassembled in the prior art.

[0037] That is, the unlocking unit 120, as a key control component, gives the connecting device 100 the ability to smoothly and controllably switch to the unlocked state through authorized operation when necessary. This feature allows only professionals with professional knowledge and skills to release the connection between the first device 200 and the second device 300 by correctly operating the unlocking unit 120 when regular maintenance, inspection or replacement is required, thereby avoiding serious safety accidents such as electric shock and fire caused by improper operation by non-professionals.

[0038] In this embodiment, the first device 200 may be an indoor ceiling structure 210, and the second device 300 may be an air conditioning inspection panel of an indoor unit of a duct-type air conditioning.

[0039] According to one embodiment of the utility model, the first device 200 has a first connecting hole 212; the second device 300 has a second connecting hole 311; the connecting unit 110 can be inserted into the first device 200 and the second device 300 through the first connecting hole 212 and the second connecting hole 311 in a locked state to connect the first device 200 and the second device 300.

[0040] In specific implementation, a stable connection between the first device 200 and the second device 300 is achieved through the first connecting hole 212 on the first device 200 and the second connecting hole 311 on the second device 300, as well as the connecting unit 110 that can penetrate the two holes in a locked state; this design ensures a fixed connection between the two devices, forming an integral structure, and enhancing the mechanical stability and working reliability between the systems.

[0041] According to one embodiment of the utility model, the connecting unit 110 includes a connecting mechanism 111 and a locking mechanism 112; the connecting mechanism 111 can be inserted into the first device 200 and the second device 300 through the first connecting hole 212 and the second connecting hole 311 in a locked state to connect the first device 200 and the second device 300; the locking mechanism 112 can be connected to the connecting mechanism 111 to put the connecting unit 110 in a locked state.

[0042] In specific implementation, the connecting mechanism 111 is responsible for actually passing through the first connecting hole 212 and the second connecting hole 311 to achieve the physical connection between the two devices; the locking mechanism 112 is responsible for ensuring that the connecting mechanism 111 remains in a locked state to prevent the connection from loosening; this split design makes the connection process more controllable and enhances the stability and security of the connection.

[0043] According to one embodiment of the utility model, the connection mechanism 111 includes an expansion connection structure 1101 and an expansion control structure 1102; the expansion connection structure 1101 is located in the first connection hole 212 and the second connection hole 311, and the expansion connection structure 1101 has an inner cavity 1110, and the inner cavity 1110 runs through both ends of the expansion connection structure 1101; the expansion connection structure 1101 is in an expanded state in the locked state to press against the hole wall of the first connection hole 212 and the hole wall of the second connection hole 311; the expansion connection structure 1101 is in a contracted state in the unlocked state , so that there are gaps between the expansion connection structure 1101 and the first connection hole 212 and the second connection hole 311 respectively; the expansion control structure 1102 is located in the inner cavity 1110 and can be movably connected to the cavity wall of the inner cavity 1110, and the expansion control structure 1102 is located in the expansion engaging position in the locked state; the expansion control structure 1102 is located in the contraction unlocking position in the unlocked state; the locking mechanism 112 can extend into the inner cavity 1110 and drive the expansion control structure 1102 to move, so that the expansion control structure 1102 moves from the contraction unlocking position to the expansion engaging position.

[0044] In specific implementation, the connecting mechanism 111 adopts a combination of an expansion connection structure 1101 and an expansion control structure 1102. In the locked state, the expansion connection structure 1101 expands and presses against the hole walls of the first connection hole 212 and the second connection hole 311 to form a close contact, thereby ensuring the connection strength; in the unlocked state, it contracts to facilitate disassembly and assembly; the locking mechanism 112 connects to the expansion control structure 1102 to keep it expanded and engaged in the locked state, thereby ensuring the long-term stability of the connection; this design improves the adaptability of the connecting device 100, making it easy to install and disassemble, while ensuring high stability and reliability in the connected state.

[0045] According to one embodiment of the utility model, the expansion connection structure 1101 includes a first connection component 1120 and a second connection component 1130 connected in sequence along its axial direction O; a step 1140 is formed between the first connection component 1120 and the second connection component 1130; the step 1140 abuts against the edge of the first connection hole 212 or the edge of the second connection hole 311 in a locked state; the second connection component 1130 is located in the first connection hole 212 and the second connection hole 311, and includes a plurality of guide portions 1131 and a plurality of expansion portions 1132; the plurality of guide portions 1131 are arranged on the end of the first connection component 1120 and are arranged at intervals along the circumference of the first connection component 1120, and the inner side of the guide portion 1131 has a slide groove 1310 arranged along the axial direction O of the expansion connection structure 1101.

[0046] In specific implementation, the expansion connection structure 1101 has expandable and contractible characteristics. The step 1140 is designed to precisely abut the edge of the hole to enhance positioning accuracy. The structural arrangement of the guide portion 1131 and the expansion portion 1132 ensures that the expansion connection structure 1101 can effectively expand when locked, closely fit the hole wall, and improve the connection stability; it shrinks when unlocked to facilitate separation. The expansion control structure 1102 achieves precise control through sliding connection, ensuring that the expansion connection structure 1101 can smoothly switch between the locked and unlocked states. This technical solution significantly improves the operational convenience and connection performance of the connection device 100.

[0047] According to one embodiment of the utility model, the expansion control structure 1102 can be slidably connected to the slide groove 1310; there is an expansion portion 1132 between each adjacent guide portion 1131, and the expansion portion 1132 is connected to the first connecting component 1120; the expansion portion 1132 is inclined outwardly in the direction from the first connecting component 1120 to the second connecting component 1130 in the locked state; the expansion portion 1132 is inclined inwardly in the direction from the first connecting component 1120 to the second connecting component 1130 in the unlocked state; the expansion engaging position is located at the free end of the expansion portion 1132; and the contraction unlocking position is located at the connecting end of the expansion portion 1132.

[0048] In specific implementation, the step 1140 structure formed between the first connection component 1120 and the second connection component 1130 helps to accurately align and abut the edge of the hole, thereby enhancing the positioning accuracy and stability of the connection. The guide parts 1131 are arranged at intervals along the circumference to provide sliding guidance, while the expansion part 1132 is tilted outward in the locked state to achieve diameter expansion, similar to the principle of expansion screws; in the unlocked state, it is tilted inward to facilitate contraction and separation, thereby facilitating extraction.

[0049] According to one embodiment of the utility model, the free end of the expansion portion 1132 has a slot 1320; the outer peripheral wall of the expansion control structure 1102 is provided with a plurality of buckles 1121, and the center of the expansion control structure 1102 is provided with a screw hole 1122; the locking mechanism 112 has a threaded section matching the screw hole 1122, and the locking mechanism 112 can extend into the screw hole 1122 in the locked state, and drive the expansion control structure 1102 to slide along the extension direction of the slide groove 1310, so that the expansion control structure 1102 moves from the contracted unlocking position to the expanded engaging position; the locking mechanism 112 is located outside the inner cavity 1110 in the unlocked state.

[0050] In a specific implementation, the slot 1320 of the expansion portion 1132 interacts with the buckle 1121 of the expansion control structure 1102 to form a locking mechanism, that is, to maintain the locked state.

[0051] According to an embodiment of the present invention, the unlocking unit 120 can extend into the screw hole 1122 in the unlocked state, and can drive the expansion control structure 1102 to move from the expanded engaging position to the contracted unlocking position.

[0052] During specific implementation, the unlocking unit 120 works in coordination with the disassembly cooperation mechanism 122 through the disassembly mechanism 121, and can extend into the screw hole 1122 in the unlocked state, driving the expansion control structure 1102 back to the retracted unlocking position, thereby realizing rapid unlocking and disassembly of the connecting device 100. This design simplifies the disassembly process, improves maintenance efficiency, and reduces operating difficulty.

[0053] According to one embodiment of the present utility model, the unlocking unit 120 includes a disassembly mechanism 121 and a disassembly matching mechanism 122; the disassembly mechanism 121 includes a support structure 1201 and an inlet structure 1202; the support structure 1201 has a through hole 1211; the inlet structure 1202 is arranged on the support structure 1201, and the inlet structure 1202 is located outside the screw hole 1122 in the locked state; the inlet structure 1202 can extend into the screw hole 1122 in the unlocked state, and the inlet structure 1202 includes a first inlet assembly 1221 and a second inlet assembly 1222 arranged relatively. Component 1222; the opposite sides of the first hole-entry component 1221 and / or the second hole-entry component 1222 have a groove 1223 connected to the through hole 1211; the disassembly matching mechanism 122 can extend into the groove 1223 through the through hole 1211 in the locked state, so that the disassembly matching mechanism 122 is clamped between the first hole-entry component 1221 and the second hole-entry component 1222, and the first hole-entry component 1221 and the second hole-entry component 1222 are respectively abutted against the hole walls of the screw hole 1122, and the disassembly matching mechanism 122 is located outside the groove 1223 in the unlocked state.

[0054] During specific implementation, the first hole entry component 1221 and the second hole entry component 1222 are arranged relative to each other, and the disassembly matching mechanism 122 is accommodated by the groove 1223 connected to the through hole 1211. In the locked state, the disassembly matching mechanism 122 extends into the groove 1223, thereby expanding the size of the hole entry structure 1202 and abutting against the hole wall of the screw hole 1122; in the unlocked state, the disassembly matching mechanism 122 moves out of the groove 1223, thereby reducing the size of the hole entry structure 1202. This design optimizes the safety and convenience of the disassembly process and improves the overall functionality of the connecting device 100.

[0055] According to an embodiment of the present invention, a lifting portion 1224 is provided at the end of the first hole entry component 1221 and the second hole entry component 1222. The lifting portion 1224 can abut against the edge (lower edge) of the screw hole 1122 in a locked state.

[0056] According to one embodiment of the present invention, a handle 1212 is further provided on the support structure 1201 (upper end).

[0057] The utility model also provides an air conditioner inspection panel, including an inspection panel body 310 and the connection device 100 of the above embodiment, the connection device 100 includes a connection unit 110; the inspection panel body 310 covers the air conditioner inspection port 211 of the indoor ceiling structure 210, and the inspection panel body 310 is arranged on the indoor ceiling structure 210 through the connection unit 110. The specific structure, working principle and beneficial effects of the connection device 100 are the same as those of the above embodiment, and will not be repeated here.

[0058] During specific implementation, the connecting device 100 is firmly connected to the indoor ceiling structure 210 to ensure that the inspection panel 310 can not only effectively shield the air conditioning inspection port 211, but also facilitate installation and disassembly by professionals, thereby greatly improving the maintenance efficiency and safety of the air conditioning equipment.

[0059] In this embodiment, the first device 200 can be an indoor ceiling structure 210, and the first connection hole 212 can be set on the edge of the air conditioning inspection port 211; the second device 300 can be an air conditioning inspection panel of the duct type air conditioning indoor unit, and the first connection hole 212 can be set on the air conditioning inspection panel.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A connection device, characterized in that: Used to connect a first device (200) and a second device (300); the connecting device comprises a connecting unit (110) and an unlocking unit (120); The connection unit (110) comprises a locked state and an unlocked state. In the locked state, the connection unit (110) can connect the first device (200) and the second device (300); in the unlocked state, the first device (200) and the second device (300) can be separated. The unlocking unit (120) can be connected to the connecting unit (110) and is used to switch the connecting unit (110) from the locking state to the unlocking state.

2. The connection device according to claim 1, characterized in that: The first device (200) has a first connecting hole (212); The second device (300) has a second connecting hole (311); The connecting unit (110) can be inserted into the first device (200) and the second device (300) through the first connecting hole (212) and the second connecting hole (311) in the locked state to connect the first device (200) and the second device (300).

3. The connection device according to claim 2, characterized in that: The connecting unit (110) comprises a connecting mechanism (111) and a locking mechanism (112); The connecting mechanism (111) can be inserted into the first device (200) and the second device (300) through the first connecting hole (212) and the second connecting hole (311) in the locked state to connect the first device (200) and the second device (300); The locking mechanism (112) can be connected to the connecting mechanism (111) to put the connecting unit (110) in a locked state.

4. The connection device according to claim 3, characterized in that: The connection mechanism (111) comprises an expansion connection structure (1101) and an expansion control structure (1102); The expansion connection structure (1101) is located in the first connection hole (212) and the second connection hole (311), and the expansion connection structure (1101) has an inner cavity (1110), and the inner cavity (1110) passes through both ends of the expansion connection structure (1101); the expansion connection structure (1101) is in an expansion state in the locked state to press against the hole wall of the first connection hole (212) and the hole wall of the second connection hole (311); the expansion connection structure (1101) is in a contracted state in the unlocked state, so that there is a gap between the expansion connection structure (1101) and the first connection hole (212) and the second connection hole (311) respectively; The expansion control structure (1102) is located in the inner cavity (1110) and can be movably connected to the cavity wall of the inner cavity (1110). The expansion control structure (1102) is located in an expanded engaging position in the locked state; and the expansion control structure (1102) is located in a contracted unlocking position in the unlocked state. The locking mechanism (112) can extend into the inner cavity (1110) and drive the expansion control structure (1102) to move, so that the expansion control structure (1102) moves from the contracted unlocking position to the expanded engaging position.

5. The connection device according to claim 4, characterized in that: The expansion connection structure (1101) comprises a first connection assembly (1120) and a second connection assembly (1130) which are sequentially connected along the axial direction (O) thereof; A step (1140) is formed between the first connecting component (1120) and the second connecting component (1130); the step (1140) abuts against an edge of the first connecting hole (212) or an edge of the second connecting hole (311) in the locked state; The second connection component (1130) is located in the first connection hole (212) and the second connection hole (311), and includes a plurality of guide portions (1131) and a plurality of expansion portions (1132); the plurality of guide portions (1131) are arranged on the end of the first connection component (1120) and are arranged at intervals along the circumference of the first connection component (1120), and the inner side of the guide portion (1131) has a slide groove (1310) arranged along the axial direction (O) of the expansion connection structure (1101).

6. The connection device according to claim 5, characterized in that: The expansion control structure (1102) can be slidably connected to the slide groove (1310); Each of the two adjacent guide portions (1131) has an expansion portion (1132), and the expansion portion (1132) is connected to the first connection component (1120); in the locked state, the expansion portion (1132) is arranged to be tilted outwards in the direction from the first connection component (1120) to the second connection component (1130); in the unlocked state, the expansion portion (1132) is arranged to be tilted inwards in the direction from the first connection component (1120) to the second connection component (1130); The expansion engaging position is located at the free end of the expansion portion (1132); The contracted unlocking position is located at the connection end of the expansion portion (1132).

7. The connection device according to claim 6, characterized in that: The free end of the expansion portion (1132) has a slot (1320); The outer peripheral wall of the expansion control structure (1102) is provided with a plurality of buckles (1121), and the center of the expansion control structure (1102) is provided with a screw hole (1122); The locking mechanism (112) has a threaded section that matches the screw hole (1122). In the locked state, the locking mechanism (112) can extend into the screw hole (1122) and drive the expansion control structure (1102) to slide along the extension direction of the slide groove (1310), so that the expansion control structure (1102) moves from the contracted unlocking position to the expanded engaging position; the locking mechanism (112) is located outside the inner cavity (1110) in the unlocked state.

8. The connection device according to claim 7, characterized in that The unlocking unit (120) can extend into the screw hole (1122) in the unlocked state, and can drive the expansion control structure (1102) to move from the expanded engaging position to the contracted unlocking position.

9. The connection device according to claim 8, characterized in that: The unlocking unit (120) comprises a disassembly mechanism (121) and a disassembly matching mechanism (122); The disassembly mechanism (121) comprises a support structure (1201) and an inlet structure (1202); The support structure (1201) has a perforation (1211); The hole entry structure (1202) is arranged on the support structure (1201); the hole entry structure (1202) is located outside the screw hole (1122) in the locked state; the hole entry structure (1202) can extend into the screw hole (1122) in the unlocked state, and the hole entry structure (1202) comprises a first hole entry component (1221) and a second hole entry component (1222) arranged opposite to each other; the first hole entry component (1221) and / or the second hole entry component (1222) have a groove (1223) connected to the through hole (1211) on the opposite sides thereof; The disassembly and fitting mechanism (122) can extend into the groove (1223) through the through hole (1211) in the locked state, so that the disassembly and fitting mechanism (122) is clamped between the first hole entry component (1221) and the second hole entry component (1222), and the first hole entry component (1221) and the second hole entry component (1222) respectively abut against the hole wall of the screw hole (1122); the disassembly and fitting mechanism (122) is located outside the groove (1223) in the unlocked state.

10. An air conditioner repair panel, characterized in that: It comprises an access panel body (310) and a connecting device as claimed in any one of claims 1 to 9, wherein the connecting device comprises a connecting unit (110); The inspection panel body (310) covers an air conditioning inspection port (211) of an indoor suspended ceiling structure (210), and the inspection panel body (310) is arranged on the indoor suspended ceiling structure (210) through the connection unit (110).

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