Buckle structure and electrical equipment with same

Abstract

The utility model discloses a buckle structure and electrical equipment with the same, the buckle structure comprises a first lock catch and a second lock catch, and the first lock catch and the second lock catch can be vertically and slidably connected to the equipment; the first lock catch is provided with a first clamping block, the second lock catch is provided with a second clamping block, the first clamping block and the second clamping block are oppositely arranged, and a clamping space is formed between the first clamping block and the second clamping block; the buckle structure has a locking state and an unlocking state, and in the locking state, the adjacent ends of the first lock catch and the second lock catch are clamped with each other, so that the equipment is fixed on the guide rail through the first clamping block and the second clamping block; in the unlocking state, the adjacent ends of the first lock catch and the second lock catch are gradually far away, so that the clamping space is increased, and the equipment is separated from the guide rail. The device has the effects of being capable of being mounted and dismounted perpendicular to the guide rail and convenient to operate.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and more specifically, to a buckle structure and an electrical equipment having the same. Background Art

[0002] In the industrial control industry, electrical equipment is often installed on rails. In order to facilitate the installation and removal of electrical equipment, a buckle structure is usually used to connect the electrical equipment and the rails so that the electrical equipment can be detachably installed on the rails. Currently, among the industrial control equipment installed on the rails by buckles, there are buckle structures composed of a buckle structure of the equipment body and one or more movable parts, or a buckle structure composed of one or more movable parts and a spring, or a buckle structure composed of one or more movable parts or a buckle structure composed of a spring.

[0003] In the related technical means, the buckle structure of the device body and the buckle structure composed of movable parts are used. When installing, the electrical device body needs to be tilted at a certain angle so that the buckle structure of the body is first buckled into one side of the guide rail, and then the matching parts are pressed toward the device body so that the movable parts are buckled into the other side of the guide rail to achieve the purpose of fixing. In this way, the electrical equipment cannot be installed or removed perpendicular to the guide rail installation surface.

[0004] A movable part is used to form a snap-fit ​​structure, and the deformation of the movable part causes the structure of the movable part on both sides of the guide rail to move in the opposite direction to open the locked guide rail state. Usually, after the opening state, the movable part is in the maximum stress state in this process. After disassembly, the movable part needs to be pressed back to the locked state. Otherwise, if it is in the open state for a long time, it will easily cause the elasticity of the movable part to fail and lose the locking ability. In addition, the force generated by the parts during the opening process gradually increases from zero or a very small value, so the guide rail is more likely to shake and detach.

[0005] The snap-fit ​​structure is composed of multiple movable parts or springs. During disassembly, it is necessary to apply opposite forces to the parts on both sides of the locking guide rail arranged on the equipment body to make the two move relative to the outside. To restore from the open state to the locked state, it is also necessary to apply opposite forces to the parts on both sides to make the two move relative to the inside. In addition, when only one side needs to apply force, the internal structure is complicated. Although the equipment can be installed and disassembled perpendicular to the track, two movable parts need to be pushed separately during installation and disassembly, so installation and disassembly are inconvenient.

[0006] With regard to the above-mentioned related technical means, the buckle structure has the defects of limited angle during equipment installation and disassembly, inconvenient operation and low guide rail installation stability. Utility Model Content

[0007] The embodiments of the present application provide a snap-fit ​​structure and an electrical device having the same, which can be installed and disassembled perpendicular to a guide rail and is easy to operate.

[0008] The present application provides a buckle structure and an electrical device having the same, which adopts the following technical solution:

[0009] In a first aspect, the present application provides a buckle structure, which adopts the following technical solution:

[0010] A buckle structure, comprising a first buckle and a second buckle, wherein the first buckle and the second buckle are vertically slidably connected to a device; the first buckle is provided with a first clamping block, the second buckle is provided with a second clamping block, the first clamping block and the second clamping block are arranged opposite to each other, and a clamping space is formed between the first clamping block and the second clamping block;

[0011] The buckle structure has a locked state and an unlocked state. In the locked state, the adjacent ends of the first buckle and the second buckle are engaged with each other so that the device is fixed on the guide rail through the first clamp block and the second clamp block; in the unlocked state, the adjacent ends of the first buckle and the second buckle gradually move away from each other to increase the clamping space so that the device can be detached from the guide rail.

[0012] Optionally, the first lock buckle is provided with a snap-in block, which is located at the end of the first lock buckle close to the second lock buckle, and the second lock buckle is provided with multiple elastic arms, and the multiple elastic arms are combined to form a receiving groove, and the elastic arms have elastic potential energy that is pressed on the snap-in block; when the snap-in structure is in a locked state, the snap-in block is located in the receiving groove and is snap-in with the multiple elastic arms, and when the snap-in structure is in an unlocked state, the multiple elastic arms are pressed against and slidably matched with the snap-in block.

[0013] Optionally, the clamping block includes a first guide portion, a second guide portion and a critical portion, the first guide portion and the second guide portion are located on both sides of the critical portion, the critical portion is fixedly connected to the first guide portion and the second guide portion, the first guide portion has a first guide slope, and the distance between the first guide slope and the axis of the clamping block gradually increases in a direction approaching the critical portion, and the second guide portion has a second guide slope, and the distance between the second guide slope and the axis of the clamping block gradually decreases in a direction away from the critical portion.

[0014] Optionally, the first lock buckle is also provided with a connecting arm, one end of the connecting arm is fixedly connected to the first lock buckle, and the other end is fixedly connected to the first guide portion; the first guide portion is provided with an initial positioning surface, the initial positioning surface is inclined in a direction away from the elastic arm close to one end of the connecting arm, and the angle between the initial positioning surface and the horizontal plane is smaller than the angle between the first guide inclined surface and the horizontal plane; the free end of the elastic arm is provided with a hook, and when the buckle structure is in a locked state, the hook presses against the initial positioning surface.

[0015] Optionally, a first clamping groove is formed between the first clamping block and the connecting arm, and a second clamping groove is formed between the second clamping block and the second locking buckle. When the locking buckle structure is in a locked state, the edge of the guide rail along the length direction is located in the first clamping groove, and the other edge of the guide rail is located in the second clamping groove.

[0016] Optionally, the opposite end surfaces of the first clamping block and the second clamping block are both provided with guiding inclined surfaces, and the guiding inclined surfaces extend obliquely toward the direction of the first clamping slot or the second clamping slot.

[0017] In a second aspect, the present application provides an electrical device, which adopts the following technical solution:

[0018] An electrical device comprises a device body and the above-mentioned buckle structure, wherein the buckle structure is installed in the device body, and a side wall of the device body facing the guide rail is provided with an escape opening matching the clamping space.

[0019] Optionally, the device body includes a first shell and a second shell, and the first shell and the second shell are snap-fitted together; the first shell and / or the second shell are provided with an installation groove, the snap-fit ​​structure is located in the installation groove, and the installation groove is connected to the outside through the avoidance opening.

[0020] Optionally, the first shell or the second shell is provided with a limit plate, and the limit plate is provided corresponding to the avoidance opening. When the buckle structure switches between an unlocked state and a locked state, the limit plate guides the movement path of the first lock buckle and the second lock buckle. When the buckle structure is in the locked state, the two ends of the limit plate are respectively pressed against the first lock buckle and the second lock buckle.

[0021] Optionally, the first shell or the second shell is provided with a first limit block and a second limit block, and the first limit block and the second limit block are both inserted into the installation groove, and the first lock buckle moves away from the second lock buckle until the first lock buckle presses against the first limit block and then stops, so that the second lock buckle presses against the second limit block, and the buckle structure completes the unlocking.

[0022] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0023] The snap-on structure can lock (or open) the guide rail by pressing (or pulling) the first lock buckle in the vertical direction so that the second lock buckle and the first lock buckle are engaged with each other (or gradually move away and slide together), thereby enabling installation and disassembly perpendicular to the guide rail. This snap-on structure does not require action on multiple components, simplifies the installation and disassembly steps, and facilitates operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of an electrical device disclosed in an embodiment of the present application;

[0025] Figure 2 This is a structural schematic diagram of a buckle structure in a locked state disclosed in an embodiment of the present application;

[0026] Figure 3 It is a schematic diagram of the structure of an elastic arm pressing against a critical part when a buckle structure disclosed in an embodiment of the present application is in an unlocked state;

[0027] Figure 4 A schematic diagram showing a housing and a buckle structure of an electrical device disclosed in an embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of an electrical device disclosed in an embodiment of the present application, highlighting the changes in the buckle structure.

[0029] Description of reference numerals:

[0030] 100, buckle structure; 110, first lock buckle; 111, first clamping block; 112, clamping block; 1121, first guide portion; 1122, second guide portion; 1123, critical portion; 1124, initial positioning surface; 1125, first guide slope; 1126, second guide slope; 113, connecting arm; 114, first clamping groove; 120, second lock buckle; 121, second clamping block; 122, elastic arm; 1221, hook; 123, accommodating groove; 124, second clamping groove; 130, guide surface; 140, clamping space;

[0031] 200, device body; 210, avoidance; 220, first shell; 230, second shell; 240, mounting groove; 250, first limit block; 260, second limit block; 270, limit plate. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] The embodiments of the present application provide a snap-fit ​​structure and an electrical device having the same.

[0034] See also Figure 1 and Figure 2 In the embodiment of the present application, an electrical device includes a device body 200 and a buckle structure 100. The device body 200 is installed on the guide rail through the buckle structure 100. The buckle structure 100 is located inside the device body 200 and slides with the device body 200. The buckle structure 100 facilitates the installation or removal of the device body 200 on the guide rail.

[0035] The buckle structure 100 includes a first lock buckle 110 and a second lock buckle 120, which are slidably connected to the device. The first lock buckle 110 and the second lock buckle 120 are both vertically arranged, and the first lock buckle 110 is located above the second lock buckle 120. The first lock buckle 110 and the second lock buckle 120 are both made of plastic material.

[0036] See also Figure 2 and Figure 3 The first lock buckle 110 is provided with a first clamping block 111, a clamping block 112, and a connecting arm 113 connecting the clamping block 112 and the first lock buckle 110. The first clamping block 111 and the clamping block 112 are both located at the end of the first lock buckle 110 close to the second lock buckle 120. The connecting arm 113 is bent, one end of the connecting arm 113 is fixedly connected to the first lock buckle 110, and the other end of the connecting arm 113 is fixedly connected to the clamping block 112. The first clamping block 111, the clamping block 112, the connecting arm 113 and the first lock buckle 110 are integrally formed. The first clamping block 111 and the clamping block 112 are arranged in parallel to reduce the internal space occupied by the device. When a pulling force is applied upward or a pressure is applied downward to the first lock buckle 110, the first clamping block 111 and the clamping block 112 both move upward or downward synchronously.

[0037] The clamping block 112 is provided with a first guide portion 1121, a second guide portion 1122 and a critical portion 1123. The first guide portion 1121 and the second guide portion 1122 are located on both sides of the critical portion 1123. The critical portion 1123 is fixedly connected to the first guide portion 1121 and the second guide portion 1122. The first guide portion 1121 has a first guide slope 1125. The distance between the first guide slope 1125 and the axis of the clamping block 112 gradually increases along the direction approaching the critical portion 1123. The second guide portion 1122 has a second guide slope 1126. The distance between the second guide slope 1126 and the axis of the clamping block 112 gradually decreases along the direction away from the critical portion 1123. In this embodiment, the clamping block 112 is arranged in a diamond block shape, the critical portion 1123 is located at the diagonal of the clamping block 112, the cross-section of the first guide portion 1121 is triangular, the first guide slope 1125 is located on the two side walls of the first guide portion 1121, the cross-section of the second guide portion 1122 is an inverted triangle, and the second guide slope 1126 is located on the two side walls of the second guide portion 1122. In other embodiments, the clamping block 112 can also be set to other shapes, such as an ellipse, etc.

[0038] The second lock buckle 120 is provided with a second clamping block 121 and a plurality of elastic arms 122. The plurality of elastic arms 122 are located at the end of the second lock buckle 120 that is close to the first lock buckle 110. The second clamping block 121 and the elastic arm 122 are integrally formed with the second lock buckle 120. The second clamping block 121 and the elastic arm 122 are arranged in parallel. When a pulling force is applied upward or a pressure is applied downward to the second lock buckle 120, the second clamping block 121 and the elastic arm 122 both move upward or downward synchronously. The plurality of elastic arms 122 enclose a receiving groove 123 for receiving the clamping block 112. The elastic arm 122 has elastic potential energy pressed against the clamping block 112. In this embodiment, the second clamping block 121 is bent by one end of the second lock buckle 120 away from the first lock buckle 110, and a plurality of elastic arms 122 are made by removing the middle part of one end of the second lock buckle 120 close to the first lock buckle 110. Two elastic arms 122 are provided, and the two elastic arms 122 are arranged opposite to each other to press the clamping block 112. The accommodating groove 123 is located between the two elastic arms 122 and changes accordingly with the deformation of the elastic arms 122.

[0039] The first clamp block 111 and the second clamp block 121 are arranged opposite to each other, and a clamping space 140 is formed between the first clamp block 111 and the second clamp block 121 for clamping the guide rail. A first clamping groove 114 is formed between the first clamp block 111 and the clamping block 112, and the first clamping groove 114 is used to accommodate one side edge of the guide rail along the length direction; a second clamping groove 124 is formed between the second clamp block 121 and the second lock 120, and the second clamping groove 124 is used to accommodate the other edge of the guide rail. In order to facilitate the edge of the guide rail to enter the first clamping groove 114 and the second clamping groove 124, the opposite end faces of the first clamp block 111 and the second clamp block 121 are both provided with guide surfaces 130, and the guide surfaces 130 extend obliquely toward the direction of the first clamping groove 114 or the second clamping groove 124. The guide rail enters the clamping space 140, and the edge of the guide rail contacts and presses against the first clamp block 111 and the second clamp block 121 at the same time. The guide rail applies force to the first clamp block 111 and the second clamp block 121, and the guide rail has a tendency to move along the guide surface 130 toward the first clamping groove 114 and the second clamping groove 124, thereby realizing the guided installation of the guide rail.

[0040] See also Figure 2 The buckle structure 100 has a locked state and an unlocked state. When the buckle structure 100 is in the locked state, the adjacent ends of the first lock buckle 110 and the second lock buckle 120 are mutually engaged, that is, the engaging block 112 is located in the receiving groove 123 and is engaged with the elastic arm 122. The elastic arm 122 is located at the connection between the connecting arm 113 and the first guide portion 1121. The elastic arm 122 contacts the first guide portion 1121, and the elastic arm 122 does not deform at this time. The first clamping block 111 and the second clamping block 121 cooperate with each other to clamp the guide rail, so that the device is installed on the guide rail.

[0041] In order to reduce the possibility of the guide rail being disengaged, the first guide portion 1121 is provided with an initial positioning surface 1124, and the end of the initial positioning surface 1124 close to the connecting arm 113 is inclined in a direction away from the elastic arm 122, and the angle between the initial positioning surface 1124 and the horizontal plane is smaller than the angle between the inclined surface of the first guide portion 1121 and the horizontal plane. The free end of the elastic arm 122 is provided with a hook 1221, and when the buckle structure 100 is in a locked state, the hook 1221 presses against the initial positioning surface 1124, thereby improving the locking ability of the guide rail in the initial stage of shaking and disengaging in the locked state. When an upward pulling force is applied to the first lock buckle 110, the first lock buckle 110 moves upward relative to the second lock buckle 120, and the locking block 112 moves with the first lock buckle 110. The initial positioning surface 1124 presses against the elastic arm 122, and the elastic arm 122 begins to deform, so that the hook 1221 disengages from the initial positioning surface 1124 and presses against the first guide portion 1121. The initial positioning surface 1124 increases the force required in the initial stage when the locking block 112 disengages from the accommodating groove 123, that is, when the buckle structure 100 is changed from a locked state to an unlocked state, a larger force is required in the initial stage, thereby reducing the possibility of the first lock buckle 110 disengaging from the second lock buckle 120 due to shaking of the guide rail, thereby reducing the possibility of the guide rail disengaging from the buckle.

[0042] See also Figure 3When the snap structure 100 is in the unlocked state, the adjacent ends of the first lock buckle 110 and the second lock buckle 120 move away from each other to increase the clamping space 140 so that the device can be separated from the guide rail, that is, the snap block 112 is partially located in the receiving groove 123 or the snap block 112 is separated from the receiving groove 123, and the elastic arm 122 presses against and slides with the snap block 112. The first lock buckle 110 is pulled upward to increase the clamping space 140, and the elastic arm 122 is deformed through the first guide portion 1121. When the clamping block 112 moves with the first lock buckle 110 to the point where the elastic arm 122 presses against the critical portion 1123, the deformation of the elastic arm 122 reaches the maximum and the stress reaches the maximum. The clamping block 112 continues to move upward with the first lock buckle 110, and the elastic arm 122 passes the critical portion 1123 and presses against the second guide portion 1122. The elastic deformation energy of the elastic arm 122 is released, and the elastic arm 122 moves along the second guide portion 1122. The elastic deformation of the elastic arm 122 forces the second lock buckle 120 to move downward as a whole to further expand the clamping space 140. When the elastic arm 122 of the buckle structure 100 passes through the critical portion 1123, the deformation reaches the maximum and the stress reaches the maximum. However, the process of the elastic arm 122 passing through the critical portion 1123 is a rapid deformation process. When in the open and locked state, the elastic arm 122 is in a non-deformed or slightly deformed state, which guarantees the elasticity of the elastic arm 122 to a certain extent, so it can be in the open and locked state for a long time, and there is no need to worry about the elastic failure of the elastic arm 122 of the second lock 120. The buckle structure 100 can lock (or open) the guide rail by pressing (or pulling) the first lock 110 in the vertical direction, so that the device body 200 can be installed and disassembled perpendicular to the guide rail. The buckle structure 100 does not need to operate multiple parts, which simplifies the installation and disassembly operations of the device body 200.

[0043] See also Figure 1 and Figure 4 The device body 200 is vertically arranged, and the side wall of the device body 200 facing the guide rail is provided with an escape opening 210 for avoiding the guide rail to facilitate the installation of the device body 200, and the height of the escape opening 210 is not less than the height of the guide rail. The device body 200 includes a first shell 220 and a second shell 230, and the first shell 220 and the second shell 230 are snap-fitted, so that the snap-fit ​​structure 100 is installed in the device body 200. Specifically, the first shell 220 and / or the second shell 230 are provided with an installation groove 240, and the snap-fit ​​structure 100 is located in the installation groove 240, and the installation groove 240 is connected to the outside through the escape opening 210, and the snap-fit ​​structure 100 contacts the guide rail through the escape opening 210.

[0044] The first housing 220 or the second housing 230 is provided with a first limit block 250, a second limit block 260 and a limit plate 270, the first limit block 250, the second limit block 260 and the limit plate 270 are all inserted into the mounting groove 240, the first limit block 250 is located above the second limit block 260, the first limit block 250 is used to limit the maximum travel range of the first lock buckle 110 moving upward, and the second limit block 260 is used to limit the maximum travel range of the second lock buckle 120 moving downward. In this embodiment, the first housing 220 and the second housing 230 are both provided with a mounting groove 240, and the first limit block 250 and the second limit block 260 are arranged on the second housing 230.

[0045] The limiting plate 270 is vertically arranged and parallel to the side wall of the mounting groove 240. The limiting plate 270 is fixedly connected to the device body 200 at the position corresponding to the avoidance opening 210. The connecting arm 113, the clamping block 112 and the elastic arm 122 are all located between the limiting plate 270 and the side wall of the mounting groove 240, limiting the lateral movement of the connecting arm 113, the clamping block 112 and the elastic arm 122. The upper end of the limiting plate 270 is located in the first clamping groove 114, and the lower end of the limiting plate 270 is located in the second clamping groove 124. When the buckle structure 100 is in a locked state, the two ends of the limiting plate are respectively pressed against the first lock buckle and the second lock buckle. On the one hand, the limit plate 270 guides the movement path of the first lock buckle 110 when the buckle structure 100 switches between the unlocked state and the locked state. On the other hand, when the first lock buckle 110 moves downward to the maximum travel range, the limit plate 270 contacts and presses against the bottom of the first snap-fit ​​groove 114, that is, the limit plate 270 presses against the first lock buckle 110; when the second lock buckle 120 moves upward to the maximum travel range, the limit plate 270 contacts and presses against the bottom of the second snap-fit ​​groove 124, that is, the limit plate 270 presses against the second lock buckle 120.

[0046] When the buckle structure 100 is performing an unlocking action, an upward pulling force is applied to the first lock buckle 110, and the first lock buckle 110 is pressed against the first limit block 250 and then stops. During this process, the second lock buckle 120 cooperates with the clamping block 112 through the elastic arm 122, so that the second lock buckle 120 is pressed against the second limit block 260 and then stops, completing the unlocking process of the buckle structure 100; when performing a locking action, a downward pressure is applied to the first lock buckle 110, and the first lock buckle 110 is pressed against the upper end of the limit plate 270 and then stops. During this process, the second lock buckle 120 cooperates with the clamping block 112 through the elastic arm 122, so that the second lock buckle 120 is pressed against the lower end of the limit plate 270 and then stops, completing the locking process of the buckle structure 100.

[0047] See also Figure 5, the maximum distance that the first lock buckle 110 moves in the vertical direction is L1, that is, the distance between the upper end surface of the connecting arm 113 and the first limit block 250; the maximum distance that the second lock buckle 120 moves in the vertical direction is L2, that is, the distance between the lower end surface of the second lock buckle 120 and the second limit block 260 is L2; ​​the distance that the guide rail is clamped into the first clamp block 111 or the second clamp block 121 is h1; in the locked state, the vertical distance between the free end of the elastic arm 122 and the critical part 1123 of the clamping block 112 is K; during the entire process of the buckle structure 100 switching between the unlocked state and the locked state, the maximum deformation of the elastic arm 122 in the vertical direction is △K, and the dimensions in the design process satisfy the following relationships: L2>h1; K+△K>2×h1; L1>K+△K; L1>L2+△K.

[0048] The installation method of the device body 200 on the guide rail is: installation method one, the snap structure 100 is in a locked state, the snap structure 100 of the first device body 200 is roughly aligned with the guide rail and pressed, the guide rail applies a force to the first clamp block 111 and the second clamp block 121, the first clamp block 111 drives the first lock buckle 110 to move upward, the second clamp block 121 drives the second lock buckle 120 to move downward, the elastic arm 122 is deformed but does not cross the critical portion 1123, thereby increasing the clamping space 140, and the edge of the guide rail enters the first clamping groove 114 and the second clamping groove 124 along the guide surface 130, and the installation is completed. Installation method two, the snap structure 100 is in the unlocked state, the equipment body 200 is placed on the guide rail, and a downward force is applied to the first lock 110. The elastic arm 122 passes over the critical portion 1123 from the second guide portion 1122 of the snap block 112 and presses against the first guide portion 1121, so that the clamping block is completely located in the accommodating groove 123, and the free end of the elastic arm 122 is located at the initial positioning surface. The first clamping block 111 moves toward the second clamping block 121 along with the snap block 112 to reduce the clamping space 140, thereby locking the guide rail.

[0049] When multiple device bodies 200 are connected for use, when a device body 200 needs to be replaced or repaired, the first lock buckle 110 of the corresponding device body 200 can be pulled open to unlock the fixation of the device body 200 to the guide rail, and then the device body 200 can be pulled out along the escape opening 210. In this way, one of the device bodies 200 can be replaced without disassembling and moving other device bodies 200. Through the buckle structure 100, the device can be installed and disassembled perpendicular to the guide rail, and the operation is convenient and quick.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the above description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. Therefore: all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A buckle structure, characterized in that: The device comprises a first lock buckle (110) and a second lock buckle (120), wherein the first lock buckle (110) and the second lock buckle (120) are vertically slidably connected to the device; the first lock buckle (110) is provided with a first clamping block (111), and the second lock buckle (120) is provided with a second clamping block (121), the first clamping block (111) and the second clamping block (121) are arranged opposite to each other, and a clamping space (140) is formed between the first clamping block (111) and the second clamping block (121); The buckle structure (100) has a locked state and an unlocked state. In the locked state, the adjacent ends of the first buckle (110) and the second buckle (120) are mutually engaged so that the device is fixed on the guide rail through the first clamping block (111) and the second clamping block (121); in the unlocked state, the adjacent ends of the first buckle (110) and the second buckle (120) are gradually separated from each other so as to increase the clamping space (140) so that the device is detached from the guide rail.

2. A buckle structure according to claim 1, characterized in that: The first lock buckle (110) is provided with a clamping block (112), and the clamping block (112) is located at the end of the first lock buckle (110) close to the second lock buckle (120). The second lock buckle (120) is provided with a plurality of elastic arms (122), and the plurality of elastic arms (122) are surrounded to form a receiving groove (123). The elastic arms (122) have elastic potential energy pressed on the clamping block (112); when the clamping structure (100) is in a locked state, the clamping block (112) is located in the receiving groove (123) and is clamped with the plurality of elastic arms (122); when the clamping structure (100) is in an unlocked state, the plurality of elastic arms (122) are pressed against and slidably matched with the clamping block (112).

3. A buckle structure according to claim 2, characterized in that: The clamping block (112) comprises a first guiding portion (1121), a second guiding portion (1122) and a critical portion (1123); the first guiding portion (1121) and the second guiding portion (1122) are located on both sides of the critical portion (1123); the critical portion (1123) is fixedly connected to the first guiding portion (1121) and the second guiding portion (1122); the first guiding portion (1121) has a first guiding inclined surface (1125); the distance between the first guiding inclined surface (1125) and the axis of the clamping block (112) gradually increases in a direction approaching the critical portion (1123); the second guiding portion (1122) has a second guiding inclined surface (1126); the distance between the second guiding inclined surface (1126) and the axis of the clamping block (112) gradually decreases in a direction away from the critical portion (1123).

4. A buckle structure according to claim 3, characterized in that: The first lock buckle (110) is also provided with a connecting arm (113), one end of the connecting arm (113) is fixedly connected to the first lock buckle (110), and the other end is fixedly connected to the first guide portion (1121); the first guide portion (1121) is provided with an initial positioning surface (1124), the initial positioning surface (1124) is inclined in a direction away from the elastic arm (122) at one end close to the connecting arm (113), and the angle between the initial positioning surface (1124) and the horizontal plane is smaller than the angle between the first guiding inclined surface (1125) and the horizontal plane; the free end of the elastic arm (122) is provided with a hook (1221), and when the buckle structure (100) is in a locked state, the hook (1221) presses against the initial positioning surface (1124).

5. A buckle structure according to claim 4, characterized in that: A first clamping groove (114) is formed between the first clamping block (111) and the connecting arm (113), and a second clamping groove (124) is formed between the second clamping block (121) and the second locking buckle (120); when the buckle structure (100) is in a locked state, an edge of the guide rail along the length direction is located in the first clamping groove (114), and the other edge of the guide rail is located in the second clamping groove (124).

6. A buckle structure according to claim 5, characterized in that: The opposite end surfaces of the first clamping block (111) and the second clamping block (121) are both provided with guide surfaces (130), and the guide surfaces (130) extend obliquely in the direction of the first clamping slot (114) or the second clamping slot (124).

7. An electrical device, characterized in that: It comprises a device body (200) and a snap-fit ​​structure (100) as described in any one of claims 1 to 6, wherein the snap-fit ​​structure (100) is installed in the device body (200), and a side wall of the device body (200) facing the guide rail is provided with an escape opening (210) that cooperates with the clamping space (140).

8. An electrical device according to claim 7, characterized in that: The device body (200) comprises a first shell (220) and a second shell (230), wherein the first shell (220) and the second shell (230) are snap-fitted together; the first shell (220) and / or the second shell (230) are provided with a mounting groove (240), the snap-fit ​​structure (100) is located in the mounting groove (240), and the mounting groove (240) is connected to the outside through the avoidance opening (210).

9. An electrical device according to claim 8, characterized in that: The first shell (220) or the second shell (230) is provided with a limit plate (270), and the limit plate (270) is provided corresponding to the avoidance opening (210). When the buckle structure (100) switches between an unlocked state and a locked state, the limit plate (270) guides the movement paths of the first lock buckle (110) and the second lock buckle (120). When the buckle structure (100) is in the locked state, two ends of the limit plate (270) are pressed against the first lock buckle (110) and the second lock buckle (120) respectively.

10. An electrical device according to claim 8, characterized in that: The first shell (220) or the second shell (230) is provided with a first limit block (250) and a second limit block (260), and the first limit block (250) and the second limit block (260) are both inserted into the installation groove (240). The first lock buckle (110) moves away from the second lock buckle (120) until the first lock buckle (110) and the first limit block (250) are pressed against each other, and then stops, so that the second lock buckle (120) and the second limit block (260) are pressed against each other, and the buckle structure (100) is unlocked.

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