A snap-fit device

Abstract

The application belongs to the technical field of buckling and discloses a buckling device. The buckling device comprises a mounting base plate, a fixed plate, a movable plate and a buckling mechanism. The fixed plate is fixed on the mounting base plate, and the movable plate is slidably arranged on the mounting base plate along the Y axis and can be slid along the Y axis to butt joint to the fixed plate. The buckling mechanism comprises a wedge block assembly, a hook assembly and a driving piece. The wedge block assembly is arranged on the movable plate, one end of the hook assembly is rotatably arranged on the fixed plate, and the output end of the driving piece extends along the Y axis and is pivotally connected to the other end of the hook assembly. In the locked state, the movable plate is butt joint to the fixed plate, and the hook assembly is abutted and pressed against the first contact surface of the wedge block assembly. In the unlocked state, the hook assembly avoids the wedge block assembly along the Y axis, which provides sufficient space for the separation of the movable plate and the fixed plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of buckling, in particular to a buckling device. BACKGROUND

[0002] In the field of modern mechanical assembly, the buckling device is a key device for precise positioning and stable connection of split components. The traditional buckling device is large in size, which is difficult to adapt to the compact installation space, and in the process of buckling and releasing, it cannot quickly provide enough avoidance position, which affects the separation of split components.

[0003] Therefore, it is necessary to provide a buckling device to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a buckling device, which is compact in structure, fast in response, and can provide enough space for the separation of the movable plate and the fixed plate in the unlocked state.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] A buckling device, comprising:

[0007] a mounting base plate;

[0008] a fixed plate and a movable plate, the fixed plate is fixed on the mounting base plate, the movable plate is slidably arranged on the mounting base plate along the Y axis, and the movable plate can slide along the Y axis to be connected to the fixed plate;

[0009] a buckling mechanism, comprising a wedge block assembly, a hook assembly and a driving piece, the wedge block assembly is arranged on the movable plate, the wedge block assembly has a first contact surface, one end of the hook assembly is rotatably arranged on the fixed plate, the fixed end of the driving piece is fixed on the fixed plate, the output end of the driving piece extends along the Y axis and is pivotally connected to the other end of the hook assembly, the driving piece drives the hook assembly to rotate to switch the buckling mechanism between the unlocked state and the locked state, in the locked state, the movable plate is connected to the fixed plate, the hook assembly is abutted and pressed on the first contact surface of the wedge block assembly, in the unlocked state, the hook assembly avoids the wedge block assembly along the Y axis.

[0010] In some optional embodiments, the hook assembly comprises:

[0011] a first mandrel fixed on the fixed plate;

[0012] The hook body includes a body portion and a clamping portion. One end of the body portion is rotatably connected to the first spindle, and the other end of the body portion is pivotally connected to the output end of the drive member via a rotating shaft. The clamping portion is spaced apart from the body portion and has a second contact surface on the side facing the body portion. The drive member drives the hook body to rotate so that the fastening mechanism switches between an unlocked state and a locked state. In the locked state, the second contact surface abuts against the first contact surface of the wedge assembly. In the unlocked state, the clamping portion avoids the wedge assembly along the Y-axis.

[0013] In some alternative embodiments, the wedge assembly includes:

[0014] The second spindle is fixed to the movable plate;

[0015] The wedge body has the first contact surface, and the wedge body is rotatably connected to the second spindle;

[0016] The mounting block and the elastic element are fixed to the movable plate and located on one side of the wedge body along the X-axis. The two ends of the elastic element are respectively connected to the mounting block and the wedge body. The elastic element is used to drive the wedge body to rotate around the second spindle, and the rotation direction of the wedge body is the same as the rotation direction of the hook body when it switches from the locked state to the unlocked state.

[0017] In some alternative embodiments, the mounting block has a limiting surface on the side facing the elastic member, the limiting surface being used to limit the extreme positions at which the elastic member drives the wedge block body to rotate.

[0018] In some optional embodiments, when the fastening mechanism is in the locked state, the angle between the first contact surface and the X-axis is α, where α is 8°-10°, and the distance between the axis of the rotating shaft and the axis of the first spindle on the X-axis is greater than the distance between the first contact surface and the axis of the first spindle in the direction perpendicular to the first contact surface.

[0019] In some optional embodiments, both the mounting block and the wedge block body are provided with mounting posts, and the mounting posts are provided with two limiting portions protruding at intervals along their axial direction. Both ends of the elastic element are provided with hanging rings, and the two hanging rings are respectively hung on the two mounting posts and located between the two limiting portions.

[0020] In some alternative embodiments, the fastening device further includes a guide assembly comprising a slidingly engaged slide rail and a slider, the slide rail extending along the Y-axis, wherein one of the movable plate and the mounting base plate is provided with the slide rail and the other is provided with the slider.

[0021] In some alternative embodiments, the number of guide components is multiple, and the multiple guide components are distributed at intervals along the X-axis.

[0022] In some alternative embodiments, there is an accommodating space extending along the Y-axis between the mounting base plate and the movable plate, and the guide assembly is accommodated within the accommodating space.

[0023] In some alternative embodiments, the mounting base is recessed to form the accommodating space, or the movable plate is recessed to form the accommodating space, or both the mounting base and the movable plate are recessed to form the accommodating space.

[0024] The beneficial effects of this invention are:

[0025] This fastening device includes a mounting base plate, a fixed plate, a movable plate, and a fastening mechanism. The fixed plate is fixed to the mounting base plate, and the movable plate is slidably disposed on the mounting base plate along the Y-axis. The movable plate can slide along the Y-axis to engage with the fixed plate. The fastening mechanism includes a wedge assembly, a hook assembly, and a driving member. The wedge assembly is disposed on the movable plate and has a first contact surface. One end of the hook assembly is rotatably disposed on the fixed plate. The fixed end of the driving member is fixed to the fixed plate, and the output end of the driving member extends along the Y-axis and is pivotally connected to the other end of the hook assembly. The driving member drives the hook assembly to rotate so that the fastening mechanism switches between an unlocked state and a locked state. In the locked state, the movable plate engages with the fixed plate, and the hook assembly abuts against the first contact surface of the wedge assembly. In the unlocked state, the hook assembly avoids the wedge assembly along the Y-axis.

[0026] The movable plate is slidably mounted on the mounting base along the Y-axis. In the initial state, the movable plate and the fixed plate are separated. When it is necessary to fasten the separate parts, the movable plate slides along the Y-axis until it aligns with the fixed plate, providing a basis for the subsequent fastening action. The driving component operates, driving the hook assembly to rotate, so that the hook assembly rotates to fit against the first contact surface of the wedge assembly. Since the wedge assembly is mounted on the movable plate, the hook assembly fits against the first contact surface of the wedge assembly, making the movable plate and the fixed plate tightly fastened, achieving a stable connection. When it is necessary to separate the movable plate and the fixed plate, the driving component drives the hook assembly to rotate in the opposite direction, so that the hook assembly no longer exerts pressure on the wedge assembly and the hook assembly avoids the wedge assembly along the Y-axis. At this time, the fastening mechanism is in the unlocked state, the movable plate loses the constraint of the hook assembly, and the hook assembly does not interfere with the wedge assembly on the Y-axis, allowing the movable plate to slide along the Y-axis, thereby separating from the fixed plate.

[0027] The fastening device in this invention integrates the fastening mechanism on the fixed plate and the movable plate, making the overall structure more compact and adaptable to smaller installation space requirements. The hook assembly is driven by a drive component, which enables the fastening mechanism to switch quickly between the locked and unlocked states with a fast response. In the unlocked state, the hook assembly can avoid the wedge block assembly along the Y-axis, providing sufficient space for the separation of the movable plate and the fixed plate. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the fastening device provided by the present invention;

[0029] Figure 2 This is a schematic diagram of the hook assembly and drive component provided by the present invention;

[0030] Figure 3 This is a schematic diagram of the wedge block assembly provided by the present invention;

[0031] Figure 4 This is a simplified force diagram of the wedge block body as the analysis object in this invention;

[0032] Figure 5 This is a simplified force diagram of the present invention, with the hook body as the object of analysis.

[0033] In the picture:

[0034] 1. Install the substrate;

[0035] 2. Fixing plate;

[0036] 3. Movable board;

[0037] 4. Fastening mechanism; 41. Wedge assembly; 411. Second spindle; 412. Wedge body; 4121. First contact surface; 413. Mounting block; 4131. Limiting surface; 414. Elastic element; 4141. Hanging ring; 415. Mounting post; 4151. Limiting part; 42. Hook assembly; 421. First spindle; 422. Hook body; 4221. Body part; 4222. Pressing part; 42221. Second contact surface; 43. Driving element; 431. Rotating shaft;

[0038] 5. Guide assembly; 51. Slide rail; 52. Slider;

[0039] 6. Storage space. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] In the field of modern mechanical assembly, fastening devices are key components for achieving precise positioning and secure connection of disassembled parts. Traditional fastening devices are relatively large, making them difficult to adapt to tight installation spaces. Furthermore, they cannot quickly provide sufficient clearance during fastening and release, affecting the separation of disassembled parts.

[0045] Therefore, such as Figures 1-3As shown, this embodiment provides a fastening device, which includes a mounting base plate 1, a fixed plate 2, a movable plate 3, and a fastening mechanism 4. The fixed plate 2 is fixed on the mounting base plate 1, and the movable plate 3 is slidably disposed on the mounting base plate 1 along the Y-axis. The movable plate 3 can slide along the Y-axis to engage with the fixed plate 2. The fastening mechanism 4 includes a wedge assembly 41, a hook assembly 42, and a driving member 43. The wedge assembly 41 is disposed on the movable plate 3 and has a first contact surface 4121. One end of the hook assembly 42 is rotatably disposed on the fixed plate 2. The fixed end of the driving member 43 is fixed to the fixed plate 2, and the output end of the driving member 43 extends along the Y-axis and is pivotally connected to the other end of the hook assembly 42. The driving member 43 drives the hook assembly 42 to rotate so that the fastening mechanism 4 switches between an unlocked state and a locked state. In the locked state, the movable plate 3 engages with the fixed plate 2, and the hook assembly 42 abuts against the first contact surface 4121 of the wedge assembly 41. In the unlocked state, the hook assembly 42 avoids the wedge assembly 41 along the Y-axis.

[0046] The movable plate 3 is slidably mounted on the mounting base plate 1 along the Y-axis. In the initial state, the movable plate 3 is separated from the fixed plate 2. When it is necessary to fasten the separate parts, the movable plate 3 slides along the Y-axis until it aligns with the fixed plate 2, providing a basis for subsequent fastening actions. The driving component 43 operates, driving the hook assembly 42 to rotate, causing the hook assembly 42 to rotate and press against the first contact surface 4121 of the wedge assembly 41. Since the wedge assembly 41 is mounted on the movable plate 3, the hook assembly 42 presses against the first contact surface 4121 of the wedge assembly 41. The upper part makes the movable plate 3 and the fixed plate 2 tightly fastened together, achieving a stable connection. When it is necessary to separate the movable plate 3 from the fixed plate 2, the driving component 43 drives the hook assembly 42 to rotate in the opposite direction, so that the hook assembly 42 no longer exerts a pressing effect on the wedge assembly 41, and the hook assembly 42 avoids the wedge assembly 41 along the Y-axis. At this time, the fastening mechanism 4 is in the unlocked state, the movable plate 3 loses the constraint of the hook assembly 42, and the hook assembly 42 will not interfere with the wedge assembly 41 on the Y-axis, so that the movable plate 3 can slide along the Y-axis, thereby separating from the fixed plate 2.

[0047] In this embodiment, the fastening device integrates the fastening mechanism 4 onto the fixed plate 2 and the movable plate 3, making the overall structure more compact and adaptable to smaller installation space requirements. The hook assembly 42 is driven by the drive component 43, enabling the fastening mechanism 4 to quickly switch between the locked and unlocked states with a fast response. Furthermore, in the unlocked state, the hook assembly 42 can avoid the wedge block assembly 41 along the Y-axis, providing sufficient space for the separation of the movable plate 3 and the fixed plate 2.

[0048] It should be noted that the movable plate 3 moves along the Y-axis under the drive of external force. It can be driven manually or by a motor, cylinder, etc. Any driving method commonly used in the prior art can be used, and this embodiment does not limit it.

[0049] Optionally, such as Figure 1 , Figure 2 As shown, the hook assembly 42 includes a first spindle 421 and a hook body 422. The first spindle 421 is fixed on the fixing plate 2. The hook body 422 includes a body portion 4221 and a pressing portion 4222. One end of the body portion 4221 is rotatably connected to the first spindle 421, and the other end of the body portion 4221 is pivotally connected to the output end of the drive member 43 via a rotating shaft 431. The pressing portion 4222 is spaced apart from the body portion 4221. The side of the pressing portion 4222 facing the body portion 4221 has a second contact surface 42221. The drive member 43 drives the hook body 422 to rotate so that the fastening mechanism 4 switches between an unlocked state and a locked state. In the locked state, the second contact surface 42221 is pressed against the first contact surface 4121 of the wedge assembly 41. In the unlocked state, the pressing portion 4222 avoids the wedge assembly 41 along the Y-axis.

[0050] When the movable plate 3 and the fixed plate 2 need to be fastened together, the driving component 43 drives the main body 4221 to rotate around the first spindle 421. The pressing part 4222 gradually approaches the wedge assembly 41 until the second contact surface 42221 of the pressing part 4222 and the first contact surface 4121 of the wedge assembly 41 are pressed together. Since the hook body 422 is fixed to the fixed plate 2 by the first spindle 421, and the pressing part 4222 generates a pressing force on the wedge assembly 41, the hook body 4222 and the fixed plate 2 are fastened together. The movable plate 3 connected to component 41 is fastened to the fixed plate 2; when it is necessary to separate the movable plate 3 and the fixed plate 2, the driving component 43 drives the main body 4221 to rotate in the opposite direction around the first spindle 421, and the pressing part 4222 gradually moves away from the wedge assembly 41. After rotating to a certain angle, the pressing part 4222 avoids the wedge assembly 41 along the Y-axis and no longer exerts a pressing effect on the wedge assembly 41. The movable plate 3 loses the constraint of the hook assembly 42 and can slide freely along the Y-axis to separate from the fixed plate 2. The first spindle 421 provides a stable rotation center for the hook body 422, enabling the hook body 422 to rotate accurately under the action of the drive member 43. By rotatably connecting one end of the body part 4221 to the first spindle 421 and by spaced the clamping part 4222 from the body part 4221, the position of the clamping part 4222 along the Y-axis can be changed by rotating the body part 4221, so that the clamping part 4222 can press against the wedge assembly 41 or avoid the wedge assembly 41.

[0051] In this embodiment, the main body 4221 and the clamping part 4222 are integrally formed. Specifically, they can be formed by forging, die casting, etc., but this embodiment does not limit this.

[0052] Optionally, such as Figure 1 , Figure 3 As shown, the wedge assembly 41 includes a second spindle 411, a wedge body 412, a mounting block 413, and an elastic element 414. The second spindle 411 is fixed on the movable plate 3. The wedge body 412 has the aforementioned first contact surface 4121 and is rotatably connected to the second spindle 411. The mounting block 413 is fixed on the movable plate 3 and located on one side of the wedge body 412 along the X-axis. The two ends of the elastic element 414 are respectively connected to the mounting block 413 and the wedge body 412. The elastic element 414 is used to drive the wedge body 412 to rotate around the second spindle 411, and the rotation direction of the wedge body 412 is the same as the rotation direction of the hook body 422 when it switches from the locked state to the unlocked state. The wedge block body 412 is rotatably connected to the movable plate 3 via the second spindle 411. By setting the elastic element 414, when the hook body 422 switches from the locked state to the unlocked state, the wedge block body 412 rotates in the same direction as the hook body 422 under the drive of the elastic element 414, so as to avoid the hook body 422 and the wedge block body 412 getting stuck and making unlocking difficult.

[0053] In this embodiment, the mounting block 413 is located on the left side of the wedge body 412 along the X-axis, the elastic element 414 is a tension spring, and the pressing part 4222 is located on the right side of the wedge body 412 along the X-axis when it is in the unlocked state.

[0054] Optionally, such as Figure 3 As shown, the mounting block 413 has a limiting surface 4131 on the side facing the elastic member 414. The limiting surface 4131 is used to limit the extreme position of the elastic member 414 driving the wedge block body 412 to rotate. In the unlocked state, the wedge body 412, driven by the elastic element 414, can only move to abut against the limiting surface 4131 of the mounting block 413, without excessive rotation. When the pressing part 4222 rotates to press against the wedge body 412, it can ensure accurate pressing against the first contact surface 4121 of the wedge body 412. When the second contact surface 42221 of the pressing part 4222 presses against the first contact surface 4121, the wedge body 412 will also rotate at a small angle to disengage from the limiting surface 4131 as the pressing part 4222 rotates, until the fastening mechanism 4 switches to the locked state. That is, it ensures that the wedge assembly 41, driven by the elastic element 414 and pressed by the pressing part 4222, can only swing at a small angle.

[0055] Optionally, such as Figure 3As shown, both the mounting block 413 and the wedge block body 412 are provided with mounting posts 415. Each mounting post 415 has two axially spaced limiting portions 4151. Both ends of the elastic element 414 have hanging rings 4141, which are respectively hung on the two mounting posts 415 and located between the two limiting portions 4151. The mounting posts 415 provide a clear mounting position for the hanging rings 4141 of the elastic element 414. When assembling the fastening mechanism 4, it is only necessary to accurately hang the hanging rings 4141 at both ends of the elastic element 414 onto the corresponding mounting posts 415, eliminating the need for extensive precise alignment and adjustment, thus improving assembly efficiency. The two limiting portions 4151 confine the hanging rings 4141 of the elastic element 414 within a specific range of the mounting posts 415, effectively preventing the elastic element 414 from falling off the mounting posts 415 during operation due to external forces.

[0056] Optionally, when the fastening mechanism 4 is in the locked state, the angle between the first contact surface 4121 and the X-axis is α, where α is 8°-10°. The distance on the X-axis between the axis of the rotating shaft 431 and the axis of the first spindle 421 is greater than the distance on the X-axis between the axis of the first contact surface 4121 and the axis of the first spindle 421 in a direction perpendicular to the first contact surface 4121. By making the angle α 8°-10° and the distance on the X-axis between the axis of the rotating shaft 431 and the axis of the first spindle 421 greater than the distance on the X-axis between the axis of the first contact surface 4121 and the axis of the first spindle 421 in a direction perpendicular to the first contact surface 4121, the mechanical properties of this fastening mechanism 4 are optimized, allowing the fastening force to be amplified and ensuring the stability of the fastening of the movable plate 3 and the fixed plate 2.

[0057] To support the above argument, a mechanical analysis was performed on the wedge body 412 and the hook body 422:

[0058] like Figure 4 As shown, taking the wedge block body 412 as the analysis object, assuming the friction coefficient between the first contact surface 4121 and the second contact surface 42221 is μ, the constraint reaction force of the first contact surface 4121 is decomposed into a joint force in the same direction. , The clamping force on the wedge body 412 is Establish a coordinate system with the axis of the second spindle 411 as the origin O. The lever arm is 0. The lever arm is The lever arm of friction is .

[0059] Depend on have to: ;

[0060] Depend on have to: ;

[0061] Solving the above equations simultaneously, we get:

[0062]

[0063]

[0064] like Figure 5 As shown, taking the hook body 422 as the analysis object, it is assumed that the output force of the driving component 43 is... Establish a coordinate system with the axis of the first spindle 421 as the origin 0', and the lever arm of the frictional force is... , The lever arm is , The lever arm is , The lever arm is .

[0065] Depend on have to: ;

[0066] Will , Substituting the expression into the above equation, we get:

[0067]

[0068] Taking a set of data as an example, in one embodiment, α is 9.5°, and the distance on the X-axis between the axis of the rotating shaft 431 and the axis of the first spindle 421 is also... The distance is 158mm, which is the distance between the center of the first contact surface 4121 and the axis of the first spindle 421 in the direction perpendicular to the first contact surface 4121. It is 94.779 mm long, μ = 0.1, and adaptable. =19.521mm, =26.8mm, =19.237mm, =0.284mm. Substituting the above parameters into the formula, we get... That is, the clamping force of this fastening mechanism 4 is 12.903 times the output force provided by the drive component 43.

[0069] Optionally, such as Figure 1As shown, the fastening device also includes a guide assembly 5, which includes a sliding rail 51 and a slider 52. The slide rail 51 extends along the Y-axis. One of the movable plate 3 and the mounting base plate 1 is provided with the slide rail 51, and the other is provided with the slider 52. The guide assembly 5 provides precise linear guidance for the movement of the movable plate 3 relative to the mounting base plate 1. During locking and unlocking, the movable plate 3 can only move along the Y-axis, avoiding irregular movements such as offset, wobbling, or twisting, thereby ensuring the accuracy and consistency of the fastening action.

[0070] In one optional embodiment, the slide rail 51 is disposed on the mounting base plate 1, and the slider 52 is disposed on the movable plate 3; in another optional embodiment, the slide rail 51 is disposed on the movable plate 3, and the slider 52 is disposed on the mounting base plate 1. The specific arrangement method depends on the actual needs, and this embodiment does not limit it.

[0071] Optionally, such as Figure 1 As shown, there are multiple guide components 5, which are spaced apart along the X-axis. These multiple guide components 5 work together to guide the movable plate 3. On the one hand, the movable plate 3 can move more precisely along the Y-axis; on the other hand, the multiple guide components 5 spaced apart along the X-axis can form a stable support structure, enhancing the movable plate 3's ability to resist lateral forces. When a lateral force acts on the movable plate 3, each guide component 5 will work together to disperse and cancel the lateral force, preventing the movable plate 3 from tilting or deforming due to excessive lateral force.

[0072] Optionally, such as Figure 1 As shown, there is an accommodating space 6 extending along the Y-axis between the mounting base 1 and the movable plate 3, and the guide component 5 is accommodated within the accommodating space 6. Placing the guide component 5 within the accommodating space 6 formed by the mounting base 1 and the movable plate 3 avoids the guide component 5 occupying additional external space, making the structure of the entire fastening device more compact. It also ensures that the movable plate 3 and the fixed plate 2 are at the same height relative to the mounting base 1, preventing the movable plate 3 from being higher than the fixed plate 2 due to the guide component 5, which would affect the fastening between the two.

[0073] In one optional embodiment, the mounting substrate 1 is recessed to form the aforementioned accommodating space 6; in another optional embodiment, the movable plate 3 is recessed to form the aforementioned accommodating space 6; in yet another embodiment, both the mounting substrate 1 and the movable plate 3 are recessed to form the accommodating space 6.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A fastening device, characterized in that, include: Mounting substrate (1); A fixed plate (2) and a movable plate (3) are provided. The fixed plate (2) is fixed on the mounting base plate (1), and the movable plate (3) is slidably disposed on the mounting base plate (1) along the Y-axis. The movable plate (3) can slide along the Y-axis to engage with the fixed plate (2). The fastening mechanism (4) includes a wedge assembly (41), a hook assembly (42), and a drive member (43). The wedge assembly (41) is disposed on the movable plate (3) and has a first contact surface (4121). One end of the hook assembly (42) is rotatably disposed on the fixed plate (2). The fixed end of the drive member (43) is fixed to the fixed plate (2). The output end of the drive member (43) extends along the Y-axis and is pivotally connected to the other end of the hook assembly (42). The drive member (43) drives the hook assembly (42) to rotate so that the fastening mechanism (4) switches between an unlocked state and a locked state. In the locked state, the movable plate (3) is connected to the fixed plate (2), and the hook assembly (42) is pressed against the first contact surface (4121) of the wedge assembly (41). In the unlocked state, the hook assembly (42) avoids the wedge assembly (41) along the Y-axis. The hook assembly (42) includes a hook body (422), which includes a body portion (4221) and a clamping portion (4222). The wedge assembly (41) includes a second spindle (411), a wedge body (412), a mounting block (413), and an elastic element (414). The second spindle (411) is fixed to the movable plate (3). The wedge body (412) has the first contact surface (4121), and the wedge body (412) is rotatably connected to the second spindle. (411); The mounting block (413) is fixed on the movable plate (3) and located on one side of the wedge body (412) along the X-axis. The two ends of the elastic element (414) are respectively connected to the mounting block (413) and the wedge body (412). The elastic element (414) is used to drive the wedge body (412) to rotate around the second spindle (411). The rotation direction of the wedge body (412) is the same as the rotation direction of the hook body (422) when it switches from the locked state to the unlocked state.

2. The fastening device according to claim 1, characterized in that, The hook assembly (42) further includes: The first mandrel (421) is fixed on the fixing plate (2); One end of the main body (4221) is rotatably connected to the first spindle (421), and the other end of the main body (4221) is pivotally connected to the output end of the drive member (43) via a rotating shaft (431). The pressing part (4222) is spaced apart from the main body (4221). The pressing part (4222) has a second contact surface (42221) on the side facing the main body (4221). The drive member (43) drives the hook body (422) to rotate so that the fastening mechanism (4) switches between the unlocked state and the locked state. In the locked state, the second contact surface (42221) abuts against the first contact surface (4121) of the wedge assembly (41). In the unlocked state, the pressing part (4222) avoids the wedge assembly (41) along the Y-axis.

3. The fastening device according to claim 2, characterized in that, The mounting block (413) has a limiting surface (4131) on the side facing the elastic member (414), the limiting surface (4131) being used to limit the extreme position of the elastic member (414) driving the wedge body (412) to rotate.

4. The fastening device according to claim 2, characterized in that, When the fastening mechanism (4) is in the locked state, the angle between the first contact surface (4121) and the X-axis is α, where α is 8°-10°. The distance between the axis of the rotating shaft (431) and the axis of the first spindle (421) on the X-axis is greater than the distance between the axis of the first contact surface (4121) and the axis of the first spindle (421) in the direction perpendicular to the first contact surface (4121).

5. The fastening device according to claim 2, characterized in that, Both the mounting block (413) and the wedge block body (412) are provided with mounting posts (415). The mounting posts (415) are provided with two limiting parts (4151) at intervals along their axial direction. Both ends of the elastic member (414) are provided with hanging rings (4141). The two hanging rings (4141) are respectively hung on the two mounting posts (415) and located between the two limiting parts (4151).

6. The fastening device according to claim 1, characterized in that, The fastening device further includes a guide assembly (5), which includes a sliding rail (51) and a slider (52) that are in sliding engagement. The sliding rail (51) extends along the Y-axis. One of the movable plate (3) and the mounting base plate (1) is provided with the sliding rail (51), and the other is provided with the slider (52).

7. The fastening device according to claim 6, characterized in that, The number of the guide components (5) is multiple, and the multiple guide components (5) are distributed at intervals along the X-axis.

8. The fastening device according to claim 6, characterized in that, There is a receiving space (6) extending along the Y-axis between the mounting base plate (1) and the movable plate (3), and the guide component (5) is housed in the receiving space (6).

9. The fastening device according to claim 8, characterized in that, The mounting base (1) is recessed to form the accommodating space (6), or the movable plate (3) is recessed to form the accommodating space (6), or both the mounting base (1) and the movable plate (3) are recessed to form the accommodating space (6).

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