A card connection structure, air conditioner indoor unit and air conditioner

Abstract

The present invention provides a snap-in connection structure, an air conditioner indoor unit and an air conditioner. The snap-in connection structure of the present invention comprises a snap-in component, a first structure to be snap-in and a second structure to be snap-in; the snap-in component comprises a body, and a first protruding structure and a limiting component arranged on the body; the body is rotatably arranged through a first through hole opened on the first structure to be snap-in, the first through hole is suitable for the first protruding structure to pass through, and the first protruding structure is suitable for snapping with the second structure to be snap-in; the first structure to be snap-in is also provided with a first limiting structure, when the snap-in component is rotated until the snap-in state between the first protruding structure and the second structure to be snap-in is released, the first limiting structure cooperates with the limiting component to limit the separation of the snap-in component from the first structure to be snap-in. The snap-in connection structure is reasonably designed to avoid the drop of the snap-in component, and meets the humanized needs of modern industry.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a card connection structure, an air conditioner indoor unit and an air conditioner. Background Art

[0002] The snap-in connection structure is used in the connection of parts, such as the connection of air conditioner parts. The snap-in connection of at least two parts is realized by rotating, avoiding the use of screws, and making disassembly and assembly more convenient. However, the existing snap-in connection structure design is not very reasonable and has been difficult to meet the humanized needs of modern industry. For example, the existing snap-in connection can only realize the snap-in connection with two parts to be snap-in, and it is easy to fall off during use. After the snap-in connection falls off, it is often difficult to find a replacement. Summary of the invention

[0003] The present invention aims to solve the technical problem that the design of the snap-in connection structure in the prior art is not very reasonable and cannot meet the humanized requirements of modern industry to a certain extent.

[0004] On the one hand, the present invention provides a snap-fit ​​connection structure, including a snap-fit ​​piece, a first structure to be snap-fitted and a second structure to be snap-fitted; the snap-fit ​​piece includes a main body, and a first protruding structure and a limiting piece arranged on the main body; the main body can be rotatably penetrated through a first through hole opened on the first structure to be snap-fitted, the first through hole is suitable for the first protruding structure to pass through, and the first protruding structure is suitable for snapping with the second structure to be snap-fitted; a first limiting structure is also provided on the first structure to be snap-fitted, and when the snap-fit ​​piece is rotated until the snap-fitting state between the first protruding structure and the second structure to be snap-fitted is released, the first limiting structure cooperates with the limiting piece to limit the separation of the snap-fit ​​piece from the first structure to be snap-fitted.

[0005] Therefore, when the locking state of the first protruding structure and the second structure to be locked is released, the first limiting structure and the limiting member cooperate to limit the separation of the locking member and the first structure to be locked, thereby avoiding the falling of the locking member. The locking connection structure is reasonably designed, meets the humanized needs of modern industry, and has high reliability and strong practicality.

[0006] Optionally, the first limiting structure includes a first transition groove and a first limiting groove opened on the side wall of the first through hole, the first limiting groove is arranged along the circumference of the first through hole, the first transition groove is connected to the first limiting groove, the first transition groove is inclined relative to the first limiting groove, and the first transition groove is suitable for sliding the limiting member into the first limiting groove; when the clamping state of the first protruding structure and the second structure to be clamped is released, the limiting member is located in the first limiting groove.

[0007] Therefore, the limiting member transitions to the first limiting groove via the first transition groove, and the first limiting groove cooperates with the limiting member to limit the axial movement of the clamping member, thereby limiting the separation of the clamping member and the first structure to be clamped, and the limiting is reliable and practical.

[0008] Optionally, a clamping portion is provided on the limiting member, and a first limiting portion is provided on the side wall of the first limiting groove, and the clamping of the first limiting portion and the clamping portion or the release of the clamping state is achieved by rotating the clamping member.

[0009] Thus, the rotation of the clamping member is limited by the clamping connection between the clamping portion and the first limiting portion, and the clamping member maintains a relatively stable state on the first structure to be clamped in both the axial and circumferential directions, thereby reducing the possibility of the clamping member detaching from the first structure to be clamped.

[0010] Optionally, the engaging portion includes a first engaging groove, and the first limiting portion includes a first engaging protrusion; when the engaging member is rotated until the engaging state between the first protruding structure and the second structure to be engaged is released, the first engaging groove engages with the first engaging protrusion.

[0011] Therefore, when the engaging state between the first protruding structure and the second structure to be engaged is released, the rotation of the engaging member is restricted by the engaging between the first engaging groove and the first engaging protrusion, and the engaging member has relatively reliable limiting in both axial and circumferential directions to prevent the engaging member from falling off.

[0012] Optionally, at least two first limiting portions are provided on the side wall of the first limiting groove, and when the clamping member is rotated until the first protruding structure and the second structure to be clamped are clamped, the clamping portion is clamped with one of the first limiting portions; when the clamping member is rotated until the clamping state between the first protruding structure and the second structure to be clamped is released, the clamping portion is clamped with another one of the first limiting portions.

[0013] Therefore, when the engaging state between the first protruding structure and the second structure to be engaged is released, the position of the engaging part on the first structure to be engaged remains locked to prevent the engaging part from falling off; when the first protruding structure and the second structure to be engaged are in the engaging state, the engaging portion engages with the first limiting portion, which can enhance the stability of the engaging connection structure.

[0014] Optionally, a second through hole is provided on the second structure to be engaged, the second through hole is suitable for the passage of the first protruding structure, the body is rotatably penetrated through the second through hole, and the first protruding structure is engaged with an edge of the second through hole away from one end of the first through hole.

[0015] Thus, the rotational guidance of the main body is achieved through the second through hole, and the radial movement of the second structure to be engaged along the second through hole can be limited to a certain extent.

[0016] Optionally, a second limiting structure is also provided on the second structure to be engaged, and the first protruding structure is suitable for passing through the second through hole and the first through hole in sequence and engaging with the edge of the first through hole; when the engaging part is rotated until the engaging state between the first protruding structure and the edge of the first through hole is released, the second limiting structure cooperates with the limiting part to limit the separation of the engaging part and the second structure to be engaged.

[0017] Therefore, the clamping piece can be inserted into the first through hole and the second through hole from the side where the first structure to be clamped or the second structure to be clamped is located, and the clamping piece can be prevented from falling off. It has broad application prospects in situations where double-sided operations are required, greatly facilitates the clamping connection operation, meets the humanized needs of modern industry, and is highly practical.

[0018] Optionally, the second limiting structure includes a second transition groove and a second limiting groove opened on the side wall of the second through hole, the second limiting groove is arranged along the circumference of the second through hole, the second transition groove is connected to the second limiting groove, the second transition groove is inclined relative to the second limiting groove, and the second transition groove is suitable for sliding the limiting member into the second limiting groove; when the clamping state between the first protruding structure and the edge of the first through hole is released, the limiting member is located in the second limiting groove.

[0019] Thus, the limiting member transitions into the second limiting groove via the second transition groove, and the second limiting groove limits the axial movement of the clamping member, thereby limiting the separation of the clamping member and the second structure to be clamped, and the limiting is reliable and practical.

[0020] Optionally, the clamping member also includes a second protruding structure, and the second protruding structure and the first protruding structure are respectively arranged at both ends of the length direction of the main body, and the second protruding structure and the first protruding structure are respectively clamped with the axial edges of the first through hole and the second through hole, or the second protruding structure and the first protruding structure are respectively clamped with the axial edges of the second through hole and the first through hole.

[0021] Thus, the two ends of the clamping member are respectively clamped with the edges of the first through hole and the second through hole, and the clamping connection structure has high stability and reliability and strong practicality.

[0022] Optionally, the second protruding structure is a disc-shaped structure.

[0023] Therefore, the disc-shaped structure will not pass through the first through hole or the second through hole, the disc-shaped structure has a large clamping surface, high reliability and stability, and the disc-shaped structure can block the first through hole and / or the second through hole.

[0024] Optionally, the first through hole is also used for the second protruding structure to pass through, and both ends of the first transition groove along the axial direction of the first through hole are provided with openings for the limiting member to pass through.

[0025] Thus, the clamping piece can be inserted into or removed from the first through hole along either axial end of the main body to complete the assembly process, which greatly improves the applicability of the clamping connection structure, for example, in working situations where disassembly and assembly from both sides is required, especially in situations where frequent disassembly and assembly is required during maintenance.

[0026] Optionally, a limiting rib structure is provided on the first structure to be clamped and / or the second structure to be clamped, and the limiting rib structure is suitable for positioning the rotation position of the clamping member.

[0027] In this way, the clamping member can be prevented from rotating beyond the clamping position, and the reliability and practicality are high.

[0028] Optionally, a slot structure is provided on one side of the first protruding structure close to the first through hole and the second through hole, and the limiting rib structure is suitable for being engaged with the slot structure.

[0029] Therefore, the positioning of the clamping member is achieved through the clamping of the clamping slot structure and the limiting rib structure, the positioning of the clamping member is reliable, and the clamping stability is high and the practicability is strong.

[0030] Optionally, the clamping member further includes a hand-held portion and a tool coupling portion, and the hand-held portion and the tool coupling portion are respectively arranged at two axial ends of the body.

[0031] Therefore, the clamping part can be rotated using a tool that matches the tool coupling part, or force can be directly applied to the hand-held part to rotate the clamping part, or the hand-held part can be rotated while using the tool. The clamping part can be disassembled and assembled in various forms, has a user-friendly design, and is highly practical.

[0032] Optionally, the hand-held part is a knob structure, and the knob structure is arranged to protrude from the axial end surface of the body.

[0033] Therefore, it is convenient to hold and apply force to the hand-held portion, and the structure is simple and practical.

[0034] Optionally, the tool coupling portion is a slot structure, a cross slot structure or a hexagonal slot structure recessed into the body.

[0035] Therefore, relatively conventional tools can be used for disassembly and assembly, and the application range is wide and the practicability is strong.

[0036] On the other hand, the present invention also provides an air-conditioning indoor unit, comprising the clip-on connection structure described in any one of the above items, and also comprising a middle frame and a base, the middle frame comprising a middle frame body, the base comprising a base body, a first structure to be clipped of the clip-on connection structure is provided on one of the middle frame body and the base body, and a second structure to be clipped of the clip-on connection structure is provided on the other of the middle frame body and the base body.

[0037] Therefore, the middle frame and the base are connected by the clamping piece, which is convenient for assembly and disassembly, and the clamping piece is not easy to fall off, so the reliability and stability are high and the practicability is strong.

[0038] Another aspect of the present invention provides an air conditioner, comprising any one of the above described snap-fit ​​connection structures and / or any one of the above described air conditioner indoor units. The air conditioner has all the beneficial effects of the snap-fit ​​connection structure, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of an air-conditioning indoor unit in an embodiment of the present invention;

[0040] Figure 2 For the present invention Figure 1 A partial enlarged view of point A in the middle;

[0041] Figure 3 For the present invention Figure 2 A partial enlarged view of point B in the middle;

[0042] Figure 4 For the present invention Figure 2 A partial enlarged view of point C in the middle;

[0043] Figure 5 It is a structural schematic diagram of a clamping member in an embodiment of the present invention;

[0044] Figure 6 It is a schematic structural diagram of the clamping member in another direction in an embodiment of the present invention;

[0045] Figure 7 It is a schematic diagram of the back structure of the clamping member connected to the first structure to be clamped in an embodiment of the present invention;

[0046] Figure 8 It is a structural schematic diagram of the embodiment of the present invention when the engaging state between the first protruding structure and the second structure to be engaged is released;

[0047] Fig. 9 It is a schematic diagram of the structure in which the first protruding structure is engaged with the second structure to be engaged in an embodiment of the present invention;

[0048] Fig.10 It is a structural schematic diagram of another direction of the snap connection structure in an embodiment of the present invention;

[0049] Fig.11 A schematic diagram of the structure of another embodiment of the present invention in which the clamping member is installed from another direction

[0050] Fig.12 For the present invention Fig.11 A partial enlarged view of point D in the middle;

[0051] Fig.13 For the present invention Fig.12 A partial enlarged view of point E in the middle;

[0052] Fig.14 For the present invention Fig.12 A partial enlarged view of point F in the middle;

[0053] Fig.15 The figure is a schematic diagram of a structure in which two limiting parts are arranged on the side wall of a limiting groove according to another embodiment of the present invention.

[0054] Description of reference numerals:

[0055] 1-clamping member, 11-body, 12-second protruding structure, 13-first protruding structure, 131-slot structure, 14-limiting member, 141-clamping portion, 15-handling portion, 16-tool coupling portion, 2-first structure to be clamped, 21-first through hole, 211-first through hole body, 212-first avoidance groove, 22-first limiting structure, 221-first transition groove, 222-first limiting groove, 223-first limiting portion, 224- The first opening structure, 225-the first flange structure, 23-the limiting rib structure, 3-the second structure to be connected, 31-the second through hole, 311-the second through hole body, 312-the second avoidance groove, 32-the second limiting structure, 321-the second transition groove, 322-the second limiting groove, 323-the second limiting portion, 324-the second opening structure, 325-the second flange structure, 41-the middle frame body, 4-the middle frame, 51-the base body, 5-the base. DETAILED DESCRIPTION

[0056] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following is a brief description of the present invention in conjunction with the attached drawings. Figures 1 to 15 The specific embodiments of the present invention are described in detail.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0059] Moreover, the Z-axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction of the arrow of the Z-axis) represents the top, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the bottom; the Y-axis in the drawings represents the horizontal direction and is designated as the left and right positions, and the positive direction of the Y-axis (that is, the direction of the arrow of the Y-axis) represents the right side, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the left side; the X-axis in the drawings represents the front and back positions, and the positive direction of the X-axis (that is, the direction of the arrow of the X-axis) represents the front side, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the back side; it should be noted that the aforementioned Z-axis, Y-axis and X-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0060] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0061] like Figure 2As shown, an embodiment of the present invention provides a snap-on connection structure, including a snap-on component 1, a first structure to be snap-on 2 and a second structure to be snap-on 3; the snap-on component 1 includes a main body 11, and a first protruding structure 13 and a limiting component 14 arranged on the main body 11; the main body 11 is rotatably penetrated through a first through hole 21 opened on the first structure to be snap-on 2, the first through hole 21 is suitable for the first protruding structure 13 to pass through, and the first protruding structure 13 is suitable for snapping with the second structure to be snap-on 3; a first limiting structure 22 is also provided on the first structure to be snap-on 2, and when the snap-on component 1 is rotated until the snap-on state between the first protruding structure 13 and the second structure to be snap-on 3 is released, the first limiting structure 22 cooperates with the limiting component 14 to limit the separation of the snap-on component 1 and the first structure to be snap-on 2.

[0062] It should be noted that in this specification, the content of the present invention is described by taking the example that the axial direction of the main body 11 is consistent with the front-to-back direction in the accompanying drawings, and the clamping member 1 can realize the position locking of the first structure to be clamped 2 and the second structure to be clamped 3 in the front-to-back direction. However, it is not limited to this. For example, when the axial direction of the main body 11 is consistent with the up-down direction, the clamping connection structure can also realize the position locking of the first structure to be clamped 2 and the second structure to be clamped 3 in the up-down direction. Here, the axial direction of the main body 11 refers to the length direction of the main body 11 when the clamping member 1 is in a state of clamping with the first structure to be clamped 2 and the second structure to be clamped 3 respectively.

[0063] It should be noted that the end of the first protruding structure 13 on the clamping member 1 can pass through the first through hole 21. Figure 4 As shown, in one embodiment, the first through hole 21 includes a first through hole body 211 and a first avoidance groove 212. The first avoidance groove 212 is opened on the side wall of the first through hole body 211. The first avoidance groove 212 is used to connect the two axial ends of the first through hole body 211. The first avoidance groove 212 is used for the passage of the first protruding structure 13. For example, the first avoidance groove 212 is a through groove structure. The first through hole body 211 is used for the body 11 to be rotatably passed through. The cross-sectional shape of the body 11 can be rectangular, circular, or elliptical, etc., which is not a limitation. The cross-sectional shape of the body 11 is preferably circular, and the first through hole body 211 is preferably a circular hole. The first through hole body 211 and the body 11 can be clearance-fitted or transition-fitted to maintain good rotational guidance. The cross-sectional shape of the first protruding structure 13 can be circular, rectangular or irregular.

[0064] When the first protruding structure 13 passes through the first through hole 21 and contacts the edge of the second structure to be clamped 3 away from the first structure to be clamped 2, it rotates along the first direction (here, the first direction is defined as Figure 2The first protruding structure 13 gradually snaps into the edge of the second structure to be snapped into place 3, thereby realizing the snap connection between the first structure to be snapped into place 2 and the second structure to be snapped into place 3. Here, the specific method of snapping the first structure to be snapped into place 2 and the second structure to be snapped into place 3 is not limited and will be further explained later.

[0065] When the reverse direction of the first direction (i.e. Figure 2 When the first protruding structure 13 is completely separated from the edge of the second structure 3 to be engaged, the engaging state between the first protruding structure 13 and the second structure 3 to be engaged is released. At this time, under the cooperation of the first limiting structure 22 and the limiting member 14, the clamping member 1 is maintained on the first structure 2 to be engaged to prevent the clamping member 1 from falling. The structure and position of the first limiting structure 22 and the limiting member 14 are not limited. Their cooperation can limit the separation of the clamping member 1 and the first structure 2 to be engaged. For example, the first limiting structure 22 can be a clamping hole set on the first structure 2 to be engaged. When the engaging state between the first protruding structure 13 and the second structure 3 to be engaged is released, the limiting member 14 is inserted into the clamping hole. Detailed description will be given later.

[0066] The advantage of such a setting is that when the clamping state between the first protruding structure 13 and the second structure to be clamped 3 is released, the first limiting structure 22 and the limiting member 14 cooperate to limit the separation of the clamping member 1 and the first structure to be clamped 2, so that the clamping member 1 remains on the first structure to be clamped 2, thereby preventing the clamping member 1 from falling off. The clamping connection structure is reasonably designed, meeting the humanized needs of modern industry, and has high reliability and strong practicality.

[0067] like Figure 2 and Figure 3 As shown, in an embodiment of the present invention, a second through hole 31 is provided on the second structure to be engaged 3, and the second through hole 31 is suitable for the passage of the first protruding structure 13. The main body 11 can be rotatably inserted into the second through hole 31, and the first protruding structure 13 is engaged with the edge of the second through hole 31 away from one end of the first through hole 21.

[0068] It should be noted that the configuration of the second through hole 31 is similar to that of the first through hole 21. Figure 3As shown, the second through hole 31 includes a second through hole body 311 and a second avoidance groove 312. The second avoidance groove 312 is opened on the side wall of the second through hole body 311. The second avoidance groove 312 is used to connect the axial ends of the second through hole body 311. The second avoidance groove 312 is used for the passage of the first protruding structure 13. The second through hole body 311 is used for the body 11 to be rotatably penetrated. The second through hole body 311 is preferably a circular hole. The second through hole body 311 and the body 11 can be clearance-fitted or transition-fitted to maintain good rotational guidance.

[0069] The advantage of such a configuration is that, by providing the second through hole 31, the rotational guidance of the main body 11 can be achieved to a certain extent, and the radial movement of the second structure to be clamped 3 along the second through hole 31 can be limited to a certain extent, and the clamping connection structure has high stability and strong practicality.

[0070] like Figure 2 and Figure 5 As shown, in an embodiment of the present invention, the clamping member 1 also includes a second protruding structure 12, and the second protruding structure 12, the limiting member 14 and the first protruding structure 13 are sequentially distributed on the main body 11 along the length direction, and the second protruding structure 12 is suitable for clamping with the edge of the first through hole 21 away from the second structure 3 to be clamped.

[0071] It should be noted that after the first protruding structure 13 passes through the first through hole 21 and the second through hole 31 in sequence, the clamping member 1 is rotated along the first direction, and the first protruding structure 13 and the second protruding structure 12 are gradually clamped into the axial edges of the first through hole 21 and the second through hole 31 respectively, thereby realizing the clamping connection between the clamping member 1 and the first structure to be clamped 2 and the second structure to be clamped 3 respectively.

[0072] like Figure 2 , Figure 4 , Figure 5 and Fig.14 As shown, the first limiting structure 22 includes a first transition groove 221 and a first limiting groove 222 opened on the side wall of the first through hole 21, the first limiting groove 222 is arranged along the circumference of the first through hole 21, the first transition groove 221 is connected to the first limiting groove 222, the first transition groove 221 is inclined relative to the first limiting groove 222, and the first transition groove 221 is suitable for sliding the limiting member 14 into the first limiting groove 222; when the clamping state between the first protruding structure 13 and the second structure to be clamped 3 is released, the limiting member 14 is located in the first limiting groove 222.

[0073] It should be noted that if Figure 5 and Fig.14As shown, in some embodiments, one end of the first transition groove 221 is located on the side of the first limiting groove 222 away from the second structure to be clamped 3. For example, the end of the first transition groove 221 away from the second structure to be clamped 3 is set at a preset distance from the edge of the first through hole 21, and the preset distance can facilitate the limiting member 14 to enter or leave the first transition groove 221. In some embodiments, an opening for the limiting member 14 to pass through is set at the end of the first transition groove 221 away from the second structure to be clamped 3. During the installation process of the clamping member 1, the limiting member 14 enters the first transition groove 221 through the opening set on the first transition groove 221. The first transition groove 221 plays a role in avoiding the limiting member 14. The first transition groove 221 slides the limiting member 14 into the first limiting groove 222. The first transition groove 221 and the limiting member 14 are in clearance. The first transition groove 221 can be perpendicular to the first limiting groove 222, which is convenient for disassembly and assembly. The first transition groove 221 can also be inclined relative to the axial direction of the first through hole 21.

[0074] like Figure 2 As shown, taking the example of rotating the clamping member 1 in the first direction and the limiting member 14 entering the first limiting groove 222 from the first transition groove 221, the limiting member 14 first passes through the first transition groove 221 to transition to the connection between the first limiting groove 222 and the first transition groove 221, and then rotates the clamping member 1 in the first direction so that the limiting member 14 enters the first limiting groove 222. The first limiting groove 222 can limit the axial movement of the clamping member 1 on the first structure to be clamped 2 along the body 11. The limiting member 14 can be a limiting column, and the cross-sectional shape of the limiting column can be a circular, elliptical or rectangular shape. It should be noted that the first transition groove 221 can be connected to the first avoidance groove 212, which will not be described in detail here.

[0075] The advantage of such a configuration is that the limiting member 14 transitions through the first transition groove 221 to reach the first limiting groove 222, and the first limiting groove 222 cooperates with the limiting member 14 to limit the axial movement of the clamping member 1, thereby limiting the separation of the clamping member 1 and the first structure to be clamped 2, and the limiting is reliable.

[0076] like Figure 4 , Figure 5 , Figure 7 and Fig.14 As shown, in an embodiment of the present invention, a clamping portion 141 is provided on the limiting member 14, and a first limiting portion 223 is provided on the side wall of the first limiting groove 222, and the clamping or releasing of the clamping state of the first limiting portion 223 and the clamping portion 141 is achieved by rotating the clamping member 1.

[0077] In one embodiment, the first limiting portion 223 is a limiting protrusion arranged on the side wall in the width direction of the first limiting groove 222, for example, a damping protrusion, and the clamping portion 141 is the outer side wall of the limiting member 14 along the rotation direction of the clamping member 1. The first limiting portion 223 includes two limiting protrusions, and the two limiting protrusions are respectively located on both sides of the limiting member 14 to increase the resistance to the rotation of the clamping member 1.

[0078] In one embodiment, at least a portion of the first limiting groove 222 is interference fit or transition fit with the limiting member 14 to limit the rotation of the clamping member 1 .

[0079] The advantage of such a setting is that the rotation of the clamping component 1 is limited by the clamping connection between the clamping portion 141 and the first limiting portion 223, and the clamping component 1 maintains a relatively stable state in the axial and circumferential directions on the first structure to be clamped 2, thereby reducing the possibility of the clamping component 1 detaching from the first structure to be clamped 2 via the first transition groove 221, thereby having high stability and strong practicality.

[0080] like Figure 4 , Figure 5 and Fig.14 As shown, in an embodiment of the present invention, the clamping portion 141 includes a first clamping groove, and the first limiting portion 223 includes a first clamping protrusion; when the rotating clamping member 1 is released from the clamping state between the first protruding structure 13 and the second structure to be clamped 3, the first clamping groove is clamped with the first clamping protrusion.

[0081] like Figure 5 and Fig.14 As shown, in one embodiment, the first clamping groove is located at one end of the limiting member 14 away from the first protruding structure 13, and a notch is provided on the side wall of the first clamping groove close to the first protruding structure 13 to facilitate the insertion of the first clamping protrusion, and the first clamping protrusion is located on the side of the first limiting groove 222 close to the second structure to be clamped 3. When the clamping member 1 is rotated along the first direction, the first clamping protrusion is clamped into the first clamping groove to limit the circumferential rotation of the clamping member 1.

[0082] like Figure 2 As shown, taking one of the embodiments as an example, the second avoidance groove 312 and the first avoidance groove 212 are not connected along the axial direction of the first through hole 21 and the second through hole 31. Along the first direction, the second avoidance groove 312 is located in front of the first avoidance groove 212, and the first limiting groove 222 is located in front of the first transition groove 221. When the limiting member 14 enters the first limiting groove 222, the clamping member 1 is rotated along the first direction so that the position of the first protruding structure 13 corresponds to the position of the second avoidance groove 312. At this time, as shown in FIG. Figure 7 and Figure 8As shown, the clamping part 141 and the first limiting part 223 are in a clamping state, and the position of the clamping member 1 on the first structure to be clamped 2 remains locked. When the clamping member is rotated along the first direction until the first protruding structure 13 is clamped with the edge of the second through hole 31, the clamping state of the clamping part 141 and the first limiting part 223 is released during this process. At this time, the limiting member 14 can be located in the first limiting groove 222 or in the first transition groove 221. It should be noted that the above only describes an implementation method of the technical solution of the present invention, and there may be other settings. For example, along the first direction, the second avoidance groove 312 is located behind the first avoidance groove 212, and the first limit groove 222 is located behind the first transition groove 221; in addition, the second avoidance groove 312 and the first avoidance groove 212 may also have a communication relationship, which will not be described in detail here.

[0083] The advantage of such a setting is that when the engaging state between the first protruding structure 13 and the second structure to be engaged 3 is released, the rotation of the engaging component 1 is limited by the engaging connection between the first engaging groove and the first engaging protrusion, and the engaging component 1 has relatively reliable limiting in both axial and circumferential directions, and the position of the engaging component 1 on the first structure to be engaged 2 remains locked, with high stability and reliability and strong practicality.

[0084] like Fig.15 As shown, in an embodiment of the present invention, at least two first limiting portions 223 are arranged on the side wall of the first limiting groove 222, and when the rotating clamping member 1 is clamped to the first protruding structure 13 and the second structure to be clamped 3, the clamping portion 141 is clamped to one of the first limiting portions 223; when the clamping state of the rotating clamping member 1 to the first protruding structure 13 and the second structure to be clamped 3 is released, the clamping portion 141 is clamped to the other first limiting portion 223.

[0085] like Fig.15 As shown, the two first limiting portions 223 are arranged in sequence along the extension direction of the first limiting groove 222. When the clamping state between the first protruding structure 13 and the second structure to be clamped 3 is released, the clamping portion 141 can be clamped with the first limiting portion 223 close to the connecting groove, or with the first limiting portion 223 far away from the first transition groove 221. Preferably, when the clamping state between the first protruding structure 13 and the second structure to be clamped 3 is released, the clamping portion 141 is clamped with the first limiting portion 223 far away from the first transition groove 221. In this way, the limiting member 14 needs to pass through the two first limiting portions 223 before it can enter the first transition groove 221 from the first limiting groove 222, and the probability of the clamping member 1 falling is low.

[0086] The advantage of such a setting is that when the engaging state between the first protruding structure 13 and the second structure to be engaged 3 is released, the position of the engaging component 1 on the first structure to be engaged 2 remains locked, thereby preventing the engaging component 1 from falling off; when the first protruding structure 13 and the second structure to be engaged 3 are in the engaging state, the engaging portion 141 engages with the first limiting portion 223, thereby enhancing the stability of the connection of the engaging connection structure.

[0087] like Fig.14 As shown, in the embodiment of the present invention, the side wall of the first limiting groove 222 is provided with a first opening structure 224 , and the first opening structure 224 is opened on the side wall of the first limiting groove 222 close to the second structure to be engaged 3 .

[0088] like Figure 4 and Fig.14 As shown, the first opening structure 224 is set to cover part or all of the side wall of the first limiting groove 222 in the width direction. Since the first limiting groove 222 is set around the circumferential part of the first through hole body 211, the processing of the first limiting groove 222 is not very convenient. The setting of the first opening structure 224 can realize the processing of the first limiting groove 222 from the side of the first structure to be clamped 2 close to the second structure to be clamped 3. At this time, the inner wall of the first through hole body 211 forms a first flange structure 225, and the limiting member 14 and the second protruding structure 12 are respectively located at the two ends of the first flange structure 225 along the axial direction of the first through hole 21. A guide surface structure can also be set at the connection point between the first transition groove 221 and the first limiting groove 222 on the first flange structure 225 to guide the sliding in or out of the limiting member 14. As shown Figure 4 As shown, preferably, the first opening structure 224 is arranged to cover a portion of the side wall of the first limiting groove 222 in the width direction, so that the two side walls of the first limiting groove 222 in the width direction can be retained, and the limiting is reliable.

[0089] like Figure 3 and Figures 11 to 14 As shown, the second structure to be engaged 3 is also provided with a second limiting structure 32, and the first protruding structure 13 is adapted to pass through the second through hole 31 and the first through hole 21 in sequence, and engage with the edge of the first through hole 21; when the engaging state between the first protruding structure 13 and the edge of the first through hole 21 is released by rotating the engaging member 1, the second limiting structure 32 cooperates with the limiting member 14 to limit the separation of the engaging member 1 and the second structure to be engaged 3. The first protruding structure 13 and the second protruding structure 12 engage with the edges of the first through hole 21 and the second through hole 31, respectively. It should be noted that the second limiting structure 32 can adopt a structure similar to the first limiting structure 22.

[0090] The advantage of such a setting is that the clamping member 1 can be inserted into the first through hole 21 and the second through hole 31 from the side where the first structure to be clamped 2 or the second structure to be clamped 3 is located, so as to realize the clamping connection with the first structure to be clamped 2 and the second structure to be clamped 3 respectively, and can avoid the clamping member 1 from falling off. It has broad application prospects in occasions where double-sided operations are required, and greatly facilitates the clamping connection operation.

[0091] like Figure 3 and Fig.13 As shown, in an embodiment of the present invention, the second limiting structure 32 includes a second transition groove 321 and a second limiting groove 322 opened on the side wall of the second through hole 31, the second limiting groove 322 is arranged along the circumference of the second through hole 31, the second transition groove 321 is connected to the second limiting groove 322, the second transition groove 321 is inclined relative to the second limiting groove 322, and the second transition groove 321 is suitable for sliding the limiting member 14 into the second limiting groove 322; when the clamping state between the first protruding structure 13 and the edge of the first through hole 21 is released, the limiting member 14 is located in the second limiting groove 322.

[0092] like Figure 3 , Fig.12 and Fig.13 As shown, the second transition groove 321 has a similar structure to the first transition groove 221, and the second limiting groove 322 has a similar structure to the first limiting groove 222. The second limiting structure 32 may further include a second limiting portion 323, a second opening structure 324, and a second flange structure 325, the structure of which is similar to that of the first limiting portion 223, the first opening structure 224, and the first flange structure 225, and will not be described in detail herein.

[0093] The advantage of such a configuration is that the limiting member 14 transitions to the second limiting groove 322 via the second transition groove 321 , and the second limiting groove 322 limits the axial movement of the clamping member 1 , thereby limiting the separation of the clamping member 1 .

[0094] like Figure 5 and Fig.10 As shown, in an embodiment of the present invention, the second protruding structure 12 is a disc-shaped structure. In some embodiments, a receiving groove structure for receiving the disc-shaped structure is provided on the first structure to be clamped 2 and / or the second structure to be clamped 3, and the receiving groove structure is located at the axial edge of the first through hole 21 and / or the second through hole 31. The receiving groove structure can also be used to receive the first protruding structure 13 to prevent the clamping member 1 from rotating due to accidental touch.

[0095] The advantage of such a configuration is that the second protruding structure 12 is configured as a disc-shaped structure, and the disc-shaped structure will not pass through the first through hole 21 or the second through hole 31. When the clamping member 1 is clamped, the clamping surface of the disc-shaped structure is large, and the reliability and stability are high. Moreover, the disc-shaped structure can block the first through hole 21 and / or the second through hole 31. The overall structure is beautiful, reliable, and practical.

[0096] In the embodiment of the present invention, the first through hole 21 and the second through hole 31 are also used for the passage of the second protruding structure 12, and both ends of the first transition groove 221 along the axial direction of the first through hole 21 are provided with openings for the passage of the stopper 14. The cross-sectional shape of the second protruding structure 12 can be circular, rectangular or irregular.

[0097] In some embodiments, the outer contour of the orthographic projection of the second protruding structure 12 in the cross section of the main body 11 is the same as the outer contour of the orthographic projection of the first protruding structure 13 in the cross section of the main body 11. At this time, preferably, the orthographic projections of the first protruding structure 13 and the second protruding structure 12 in the cross section of the main body 11 do not overlap. The first avoidance groove 212 and the second avoidance groove 312 are not connected. Taking the engagement of the first protruding structure 13 and the second structure to be engaged 3 as an example, when the engaging state of the first protruding structure 13 and the second structure to be engaged 3 is released by rotating the engaging member 1, the second structure to be engaged 3 is removed. At this time, the second protruding structure 12 and the limiting member 14 are respectively located on both sides of the first flange structure 225. Continue to rotate the engaging member 1 until the limiting member 14 slides to the first transition groove 221, and then pull the engaging member 1 along the axial direction of the main body 11 toward the side away from the second structure to be engaged 3. At this time, the limiting member 14 can be disengaged from the first transition groove 22 1, and then, the first protruding structure 13 is taken out from the first through hole 21; or, in the process of pulling the clamping member 1 along the axial direction of the body 11 toward the side away from the second structure to be clamped 3, the first protruding structure 13 can be pulled out from the first through hole 21. For example, at this time, the position of the first protruding structure 13 corresponds to the position of the first avoidance groove 212, or, the inner wall of the first through hole body 211 is provided with another avoidance groove for the first protruding structure 13 to pass through. There are many implementation methods, and the process of the first protruding structure 13 passing through the first through hole 21 and the second through hole 31 is similar to this, which will not be described one by one here.

[0098] The advantage of this arrangement is that the clamping member 1 can be inserted into or removed from the first through hole 21 along either axial end of the main body 11 to complete the assembly process, which greatly improves the applicability of the clamping connection structure, for example, in operating situations where clamping connection is required from both sides, especially in situations where frequent disassembly and assembly are required during maintenance.

[0099] like Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.13 As shown, a limiting rib structure 23 is provided on the first structure to be clamped 2 and / or the second structure to be clamped 3 , and the limiting rib structure 23 is suitable for positioning the rotation position of the clamping member 1 .

[0100] The limiting rib structure 23 is located at one end of the first structure to be clamped 2 away from the second structure to be clamped 3, and / or, at one end of the second structure to be clamped 3 away from the first structure to be clamped 2. In one embodiment, the limiting rib structure cooperates with the first protruding structure 13 to realize the positioning of the rotation position of the clamping member 1; and the second protruding structure 12 is provided with a avoiding structure for avoiding the limiting rib structure 23.

[0101] like Figure 5 , Figure 8 and Fig. 9 As shown, a slot structure 131 is provided on one side of the first protruding structure 13 close to the first through hole 21 and the second through hole 31 , and the limiting rib structure 23 is suitable for being engaged with the slot structure 131 .

[0102] The advantage of such a configuration is that the clamping position of the clamping member 1 is positioned by clamping the clamping groove structure 131 and the limiting rib structure 23 , which has high stability and strong practicality.

[0103] like Figure 5 and Figure 6 As shown, in the embodiment of the present invention, the clamping component 1 further includes a hand-held portion 15 and a tool-engaging portion 16 , and the hand-held portion 15 and the tool-engaging portion 16 are respectively disposed at two axial ends of the body 11 .

[0104] The hand-held portion 15 can be located at the end where the first protruding structure 13 is located, or at the end where the second protruding structure 12 is located. For example, the hand-held portion 15 and the second protruding structure 12 are located at one axial end of the body 11, and the tool coupling portion 16 and the first protruding structure 13 are located at the other end.

[0105] The advantage of this arrangement is that when disassembling the connector 1, the connector 1 can be rotated using a tool that matches the tool coupling portion 16, or force can be directly applied to the handheld portion 15 to rotate the connector 1, or the handheld portion 15 can be rotated while using the tool.

[0106] like Figure 5 and Fig.10 As shown, the hand-held portion 15 is a knob structure, and the knob structure is protruding from the axial end surface of the body 11. For example, the knob structure is a rectangular plate or a semicircular plate, which is convenient for hand-held force application of the hand-held portion 15, has a simple structure, and is highly practical.

[0107] It should be noted that when one end of the hand-held portion 15 needs to pass through the first through hole 21, the superposition of the orthographic projections of the main body 11 and the second protruding structure 12 on the cross section of the main body 11 completely covers the orthographic projection of the hand-held portion 15 on the cross section of the clip 1.

[0108] In an embodiment of the present invention, the tool coupling portion 16 is a slot structure, a cross slot structure or a hexagonal slot structure recessed in the main body 11. The snap-on connection structure can be disassembled and assembled using more conventional tools. In one embodiment, the slot structure, the cross slot structure or the hexagonal slot structure correspond to the use of a slotted screwdriver, a cross screwdriver and a hexagonal wrench, respectively. In one embodiment, the cross slot structure includes a wide slot structure and a narrow slot structure, the wide slot structure is used for the disassembly and assembly of coins, hard steel sheets and other items, and the narrow slot structure can be used for a slotted screwdriver. For example, the length direction of the wide slot structure is consistent with the direction in which the first protruding structure 13 protrudes from the main body 11, and the length direction of the narrow slot structure is perpendicular to the direction in which the first protruding structure 13 protrudes from the main body 11.

[0109] like Figure 1 , Figure 2 , Fig.11 and Fig.12 As shown, another embodiment of the present invention provides an air conditioner indoor unit, including any of the above-mentioned snap-in connection structures, and also including a middle frame 4 and a base 5, wherein the middle frame 4 includes a middle frame body 41, and the base 5 includes a base body 51, and a first to-be-snaped structure 2 of the snap-in connection structure is provided on one of the middle frame body 41 and the base body 51, and a second to-be-snaped structure 3 of the snap-in connection structure is provided on the other of the middle frame body 41 and the base body 51. For example, the air conditioner indoor unit may be a wall-mounted air conditioner indoor unit.

[0110] The advantage of such a setting is that when the engaging state between the first protruding structure 13 and the second structure to be engaged 3 is released, the first limiting structure 22 and the limiting member 14 cooperate to limit the separation of the engaging member 1 and the first structure to be engaged 2, so that the engaging member 1 remains on the first structure to be engaged 2, thereby preventing the engaging member 1 from falling off, and having high reliability and strong practicality.

[0111] Another embodiment of the present invention provides an air conditioner, comprising any of the above-mentioned card connection structures, and / or any of the above-mentioned air conditioner indoor units. The air conditioner can be a wall-mounted air conditioner, a duct air conditioner, or a vertical air conditioner. The air conditioner has all the beneficial effects of the card connection structure, which will not be described in detail here.

[0112] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A snap-on connection structure, characterized in that: The invention comprises a clamping member (1), a first structure to be clamped (2) and a second structure to be clamped (3); the clamping member (1) comprises a body (11), and a first protruding structure (13) and a limiting member (14) arranged on the body (11); the body (11) is rotatably arranged to penetrate a first through hole (21) provided on the first structure to be clamped (2), the first through hole (21) is suitable for the first protruding structure (13) to pass through, and the first protruding structure (13) is suitable for clamping with the second structure to be clamped (3); a first limiting structure (22) is also arranged on the first structure to be clamped (2), and when the clamping member (1) is rotated until the clamping state between the first protruding structure (13) and the second structure to be clamped (3) is released, the first limiting structure (22) cooperates with the limiting member (14) to limit the separation of the clamping member (1) and the first structure to be clamped (2); The first through hole (21) comprises a first through hole body (211) and a first avoidance groove (212), wherein the first avoidance groove (212) is provided on a side wall of the first through hole body (211), and the first avoidance groove (212) is used for the first protruding structure (13) to pass through; the first limiting structure (22) comprises a first transition groove (221) and a first limiting groove (222) provided on the side wall of the first through hole (21), and the first limiting groove (222) is provided along the first through hole (21 ), the first transition groove (221) is connected to the first limiting groove (222), the first transition groove (221) is inclined relative to the first limiting groove (222), and the first transition groove (221) is suitable for sliding the limiting member (14) into the first limiting groove (222); when the engaging state between the first protruding structure (13) and the second structure to be engaged (3) is released, the limiting member (14) is located in the first limiting groove (222).

2. The snap-fit ​​connection structure according to claim 1, characterized in that: The limiting member (14) is provided with a clamping portion (141), and the side wall of the first limiting groove (222) is provided with a first limiting portion (223), and the clamping state of the first limiting portion (223) and the clamping portion (141) is released or clamped by rotating the clamping member (1).

3. The snap-fit ​​connection structure according to claim 2, characterized in that: The engaging portion (141) comprises a first engaging groove, and the first limiting portion (223) comprises a first engaging protrusion; when the engaging member (1) is rotated until the engaging state between the first protruding structure (13) and the second structure to be engaged (3) is released, the first engaging groove engages with the first engaging protrusion.

4. The snap-fit ​​connection structure according to claim 2, characterized in that: At least two first limiting portions (223) are provided on the side wall of the first limiting groove (222); when the clamping member (1) is rotated to clamp the first protruding structure (13) and the second structure to be clamped (3), the clamping portion (141) is clamped with one of the first limiting portions (223); when the clamping member (1) is rotated to release the clamping state between the first protruding structure (13) and the second structure to be clamped (3), the clamping portion (141) is clamped with another one of the first limiting portions (223).

5. The snap-fit ​​connection structure according to claim 1, characterized in that: The second structure to be engaged (3) is provided with a second through hole (31), the second through hole (31) is suitable for the first protruding structure (13) to pass through, the body (11) is rotatably inserted into the second through hole (31), and the first protruding structure (13) is engaged with an edge of the second through hole (31) away from one end of the first through hole (21).

6. The snap-fit ​​connection structure according to claim 5, characterized in that: A second limiting structure (32) is also provided on the second structure to be engaged (3), and the first protruding structure (13) is suitable for passing through the second through hole (31) and the first through hole (21) in sequence, and engaging with the edge of the first through hole (21); when the engaging member (1) is rotated until the engaging state between the first protruding structure (13) and the edge of the first through hole (21) is released, the second limiting structure (32) cooperates with the limiting member (14) to limit the separation of the engaging member (1) and the second structure to be engaged (3).

7. The snap-fit ​​connection structure according to claim 6, characterized in that: The second limiting structure (32) comprises a second transition groove (321) and a second limiting groove (322) which are opened on the side wall of the second through hole (31); the second limiting groove (322) is arranged along the circumference of the second through hole (31); the second transition groove (321) is connected with the second limiting groove (322); the second transition groove (321) is inclined relative to the second limiting groove (322); the second transition groove (321) is suitable for sliding the limiting member (14) into the second limiting groove (322); when the clamping state between the first protruding structure (13) and the edge of the first through hole (21) is released, the limiting member (14) is located in the second limiting groove (322).

8. The snap-fit ​​connection structure according to claim 5, characterized in that: The clamping member (1) further comprises a second protruding structure (12), wherein the second protruding structure (12) and the first protruding structure (13) are respectively arranged at two ends of the length direction of the body (11), and the second protruding structure (12) and the first protruding structure (13) are respectively clamped with the axial edges of the first through hole (21) and the second through hole (31), or the second protruding structure (12) and the first protruding structure (13) are respectively clamped with the axial edges of the second through hole (31) and the first through hole (21).

9. The snap-fit ​​connection structure according to claim 8, characterized in that: The second protruding structure (12) is a disc-shaped structure.

10. The snap-fit ​​connection structure according to claim 8, characterized in that: The first through hole (21) is also used for the second protruding structure (12) to pass through, and both ends of the first transition groove (221) along the axial direction of the first through hole (21) are provided with openings for the limiting member (14) to pass through.

11. The snap-fit ​​connection structure according to claim 6, characterized in that: A limiting rib structure (23) is provided on the first structure to be clamped (2) and / or the second structure to be clamped (3), and the limiting rib structure (23) is suitable for positioning the rotational position of the clamping member (1).

12. The snap-fit ​​connection structure according to claim 11, characterized in that: A slot structure (131) is provided on one side of the first protruding structure (13) close to the first through hole (21) and the second through hole (31), and the limiting rib structure (23) is suitable for being engaged with the slot structure (131).

13. The snap-fit ​​connection structure according to any one of claims 1 to 12, characterized in that: The clamping component (1) further comprises a hand-held portion (15) and a tool-combining portion (16), wherein the hand-held portion (15) and the tool-combining portion (16) are respectively arranged at two axial ends of the body (11).

14. The snap-fit ​​connection structure according to claim 13, characterized in that: The hand-held portion (15) is a knob structure, and the knob structure is arranged to protrude from the axial end surface of the body (11).

15. The snap-fit ​​connection structure according to claim 13, characterized in that: The tool coupling portion (16) is a slot structure, a cross slot structure or a hexagonal slot structure recessed in the body (11).

16. An air conditioner indoor unit, characterized in that: It comprises the snap-fit ​​connection structure as described in any one of claims 1 to 15, and also comprises a middle frame (4) and a base (5), wherein the middle frame (4) comprises a middle frame body (41), and the base (5) comprises a base body (51), and a first structure to be snap-fitted (2) of the snap-fit ​​connection structure is provided on one of the middle frame body (41) and the base body (51), and a second structure to be snap-fitted (3) of the snap-fit ​​connection structure is provided on the other of the middle frame body (41) and the base body (51).

17. An air conditioner, characterized in that: It comprises the snap-on connection structure as described in any one of claims 1 to 15, and / or the air-conditioning indoor unit as described in claim 16.

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