Fixing and releasing device
By designing a fixing and releasing device with a base, limiting components, and lever structure, the problem of inconvenient fixing and releasing of the expansion card is solved, and a simple and convenient operation process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-03-03
AI Technical Summary
The process of fixing and releasing the expansion card in the existing technology is not simple or convenient enough.
Design a fixed release device, including a base, a limiting component, a first elastic element and a lever structure. The expansion card is fixed and released by the movement of the limiting component and the accumulated elastic force of the elastic element. The operation is simplified by using a button and a moving part.
It enables simple and convenient fixing and releasing of the expansion card. Users only need to press the button once to move the limit component, avoiding the need for continuous operation.
Smart Images
Figure CN223966866U_ABST
Abstract
Description
Technical Field
[0001] This case relates to a fixation and release device, and more particularly to a fixation and release device for fixing and releasing an expansion card. Background Technology
[0002] Currently, expansion cards can be installed or removed from the motherboard using a locking and releasing mechanism. Improving the ease of this process is a direction for research in this field. Utility Model Content
[0003] This case pertains to a locking and releasing device that can quite simply and conveniently limit and release the locking hook of an expansion card.
[0004] According to an embodiment of this invention, a locking and releasing device is suitable for limiting and releasing the locking hook of an expansion card, comprising: a base, a limiting assembly, a first elastic member, and a lever structure. The base includes a receiving groove for accommodating the locking hook. The limiting assembly is movably disposed on the base and includes a first limiting portion and a second limiting portion. The first limiting portion includes a first inclined surface exposed on the base and a first limiting surface facing the receiving groove, and the second limiting portion is erected on the first limiting surface. The first elastic member is located between the second limiting portion and the base. The lever structure includes a pivot, a first branch extending from the pivot, and a deformable second branch. The pivot is pivotally connected to the base, the first branch extends into the receiving groove, and the second branch includes a second limiting surface. When the locking hook of the expansion card presses down on the first inclined surface of the limiting assembly, the limiting assembly moves towards an exit path, and the first elastic member accumulates elastic force. When the fixed hook leaves the first inclined surface and moves down into the receiving groove, the first elastic element releases, causing the limiting assembly to return to its original position. The first limiting surface is positioned above the fixed hook to restrict its upward movement. When the fixed hook is inside the receiving groove, it presses against the first branch, causing the second branch to rotate and enter the exit path of the second limiting part. As the limiting assembly moves along the exit path to the exit position, the second branch is compressed and deformed, allowing the limiting assembly to pass through. The second branch then returns to its original position. When the limiting assembly is in the exit position, the second limiting part is restricted by the second limiting surface and remains in the exit position. The first limiting part moves away from above the fixed hook, releasing the restriction on the fixed hook.
[0005] In the fixed release device according to the embodiment of this case, the fixed release device further includes a torsion spring disposed on the pivot, so that when the first branch of the lever structure is not pressed, it normally forms a non-zero acute angle with the extension direction of the exit path, and the second branch exits the exit path of the second limiting portion.
[0006] In the fixed release device according to the embodiment of this case, when the fixed hook located in the receiving groove presses against the first branch, the second branch abuts against the second limiting part.
[0007] In the fixed release device according to an embodiment of the present invention, the second branch includes a groove, a second elastic member, and a locking block. The locking block is movably disposed in the groove, and the second elastic member is located in the groove and abuts against the groove and the locking block.
[0008] In the fixed release device according to the embodiment of this case, the locking block includes a second inclined surface and a second limiting surface. When the fixing hook abuts against the first support and the first limiting surface is above the fixing hook, the second limiting part abuts against the second inclined surface of the second support. When the limiting component is in the withdrawing position, the second limiting part abuts against the second limiting surface.
[0009] In the fixed release device according to an embodiment of this case, the second branch includes a spring arm.
[0010] In the fixed release device according to the embodiment of this case, the spring arm includes a second inclined surface and a second limiting surface. The second limiting surface is located at the edge of the spring arm. When the fixing hook abuts against the first support and the first limiting surface is above the fixing hook, the second limiting part abuts against the second inclined surface. When the limiting component is in the withdrawing position, the second limiting part abuts against the second limiting surface.
[0011] In the fixed release device according to the embodiment of this case, the fixed release device further includes a button and a movable member, the movable member being linked to the button, and the movable member driving the limiting component to move to the exit position.
[0012] In the fixed release device according to an embodiment of the present invention, the button includes a third inclined surface, and the movable member includes a fourth inclined surface corresponding to the third inclined surface. When the button is pressed down, the third inclined surface pushes the fourth inclined surface, thereby moving the movable member.
[0013] In the fixed release device according to an embodiment of the present invention, the moving member includes a driving part for driving the second limiting part to move along the exit path, and the driving part is offset from the second branch in the moving direction of the second limiting part.
[0014] Based on the above, the fixing and releasing device of this case, through the aforementioned design, allows the limiting component to move towards the exit path when the fixing hook of the expansion card presses down on the first inclined surface of the limiting component, and the first elastic element accumulates elastic force. When the fixing hook leaves the first inclined surface and moves down into the receiving groove, the first elastic element releases, causing the limiting component to return to its original position. The first limiting surface is located above the fixing hook to restrict the upward movement of the fixing hook, thus completing the fixing operation, which is quite convenient.
[0015] When the retaining hook is in the receiving groove, it presses against the first branch, causing the second branch to rotate and enter the exit path of the second limiting part. To release the limiting of the retaining hook on the expansion card, simply move the limiting component along the exit path to the exit position. During this process, the second branch is compressed and deformed, allowing the limiting component to pass through. After the limiting component passes the second branch, the second branch returns to its original position. Therefore, when the limiting component is in the exit position, the second limiting part is restricted by the returned second limiting surface and remains in the exit position. At this time, the first limiting part moves away from the retaining hook, releasing the limiting of the retaining hook. Therefore, the user can remove the expansion card simply by moving it upwards. In other words, as long as the limiting component is moved to the exit position, it will be fixed in the exit position without needing to continuously pull the limiting component. In one embodiment, the limiting component can be activated by pressing a button. Therefore, the user only needs to press the button once, and the limit component will be moved to the exit position, without having to press the button continuously, making the release operation quite convenient. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the appearance of a fixing and releasing device disposed on the motherboard according to an embodiment of this case;
[0017] Figure 2A It's an expansion card push. Figure 1 A three-dimensional schematic diagram of the first inclined plane of the fixed release device;
[0018] Figure 2B and Figure 2C yes Figure 2A Cross-sectional diagrams from different perspectives;
[0019] Figure 3 It is a cross-sectional view of the expansion card located in the receiving slot and limited by the first limiting part;
[0020] Figure 4 yes Figure 1 A schematic diagram of the cross section of line segment AA;
[0021] Figure 5 This is a partial three-dimensional schematic diagram of the limiting components, lever structure and driving part of the hidden seat;
[0022] Figure 6 This is a schematic diagram showing the expansion card being inserted into the slot and the button being pressed.
[0023] Figure 7 yes Figure 6 A cross-sectional view of line segment BB;
[0024] Figure 8 This is a partial cross-sectional schematic diagram of a fixing and releasing device according to another embodiment of this case;
[0025] Figure 9 It is an expansion card Figure 8 A partial cross-sectional schematic diagram of the fixed release device;
[0026] Figure 10 Is the expansion card located in Figure 8 A partial cross-sectional view of the container after the button is pressed.
[0027] Explanation of reference numerals in the attached figures
[0028] θ: Non-zero acute angle;
[0029] 10: Motherboard;
[0030] 12: Slot;
[0031] 20: Expansion Card;
[0032] 22: Fixed hook part;
[0033] 100: Fixed release device;
[0034] 110: base body;
[0035] 112: Receiving tank;
[0036] 120: Limiting component;
[0037] 122: First limiting part;
[0038] 123: First inclined plane;
[0039] 124: First limiting surface;
[0040] 125: Second limiting part;
[0041] 130: First elastic element;
[0042] 135: Torsion spring;
[0043] 140: Lever structure;
[0044] 141: Pivot;
[0045] 142: First Branch;
[0046] 143, 143a: Second Branch;
[0047] 144: Tank body;
[0048] 145: Second elastic element;
[0049] 146: Block;
[0050] 148: Second slope;
[0051] 149: Second limiting surface;
[0052] 150: Button;
[0053] 152: Third inclined plane;
[0054] 155: Moving parts;
[0055] 157: Fourth inclined plane;
[0056] 158: Driving Department. Detailed Implementation
[0057] Reference will now be made in detail to exemplary embodiments of this invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same component reference numerals are used in the drawings and description to denote the same or similar parts.
[0058] Figure 1 This is a schematic diagram of the appearance of a fixed release device disposed on the motherboard according to an embodiment of this case. Figure 2A It's an expansion card push. Figure 1 A three-dimensional schematic diagram of the first inclined plane of the fixed release device. Figure 2B and Figure 2C yes Figure 2A Cross-sectional diagrams from different perspectives.
[0059] Please see Figures 1 to 2C In this embodiment, the fixing release device 100 is adapted to be disposed on the motherboard 10 and located next to the slot 12 of the motherboard 10. The slot 12 is, for example, a PCI-E slot, but the type of slot 12 is not limited thereto. The fixing release device 100 is used to limit and release the fixing hook 22 of the expansion card 20 to assist in fixing the expansion card 20 to the motherboard 10.
[0060] like Figure 2B and Figure 2C As shown, in this embodiment, the fixing and releasing device 100 includes a seat 110, a limiting component 120, a first elastic element 130, and a lever structure 140. The seat 110 includes a receiving groove 112 for accommodating the fixing hook 22.
[0061] The limiting component 120 is movably disposed on the base 110 and includes a first limiting portion 122 and a second limiting portion 125. The first limiting portion 122 includes a first inclined surface 123 exposed outside the base 110 and a first limiting surface 124 facing the receiving groove 112. The second limiting portion 125 is erected on the first limiting surface 124 and located inside the base 110.
[0062] The first elastic element 130 is located between the second limiting portion 125 and the seat 110. In this embodiment, the first elastic element 130 is a linear spring that extends along the moving direction (left-right direction) of the limiting assembly 120, but the type of the first elastic element 130 is not limited thereto.
[0063] The lever structure 140 includes a pivot 141, a first branch 142 extending from the pivot 141, and a deformable second branch 143. The pivot 141 is pivotally connected to the seat 110, and the first branch 142 and the second branch 143 are similar to the structure of a seesaw with the pivot 141 as the fulcrum. The first branch 142 extends into the receiving groove 112 and is similar to a cantilever extending from the pivot 141. The second branch 143 includes a second limiting surface 149.
[0064] Specifically, in this embodiment, the second branch 143 includes a groove 144, a second elastic member 145, and a locking block 146. The locking block 146 is movably disposed in the groove 144, and the second elastic member 145 is located within the groove 144 and abuts against the groove 144 and the locking block 146. The locking block 146 includes a second inclined surface 148 and a second limiting surface 149. In this embodiment, the second elastic member 145 is a linear spring, but the type of the second elastic member 145 is not limited thereto. When the locking block 146 is pushed, the second elastic member 145 can be compressed, causing the locking block 146 to move further into the groove 144. When the locking block 146 is not pushed, the second elastic member 145 can lift the locking block 146 and make it protrude out of the groove 144.
[0065] Furthermore, in this embodiment, the fixing release device 100 also includes a torsion spring 135, disposed on the pivot 141, so that when the first branch 142 of the lever structure 140 is not pressed, as... Figure 2C As shown, under normal conditions, the second branch 143 exits the exit path of the second limiting part 125 at a non-zero acute angle θ with the extension direction of the exit path, and the second branch 143 exits the exit path of the second limiting part 125. Therefore, the second branch 143 will not contact the second limiting part 125 in this state. When the limiting component 120 moves to the right, the second branch 143 will not block the second limiting part 125.
[0066] The following describes how, when the expansion card 20 is installed in slot 12 of the motherboard 10, the fixing hook 22 of the expansion card 20 is limited by the limiting component 120 and cannot move upward.
[0067] When expansion card 20 is to be installed in slot 12 of motherboard 10, such as Figures 2B to 2C As shown, the fixing hook 22 of the expansion card 20 presses down on the first inclined surface 123 of the limiting component 120, causing the limiting component 120 to move to the right exit path. At this time, the first elastic member 130 is compressed by the second limiting part 125 and accumulates elastic force.
[0068] Figure 3 This is a cross-sectional view showing the expansion card positioned within the receiving slot and restrained by the first limiting part. Please refer to [link / reference]. Figure 3 When the fixed hook 22 leaves the first inclined surface 123 and moves down to the receiving groove 112, the first elastic member 130 is released to return the limiting component 120 to its original position, and the first limiting surface 124 is located above the fixed hook 22 to limit the upward movement of the fixed hook 22.
[0069] Furthermore, when the fixing hook 22 is located within the receiving groove 112, the fixing hook 22 presses against the first branch 142, and the second branch 143 rotates accordingly, entering the exit path of the second limiting part 125. At this time, the second limiting part 125 abuts against the second inclined surface 148 of the locking block 146 of the second branch 143, and the second elastic member 145 is compressed to accumulate elastic force.
[0070] Figure 4 yes Figure 1 A schematic diagram of the cross section of line segment AA. Figure 5 This is a partial three-dimensional schematic diagram of the limiting components, lever structure, and driving mechanism of the concealed seat. Please refer to [link / reference]. Figure 1 , Figure 4 and Figure 5 In this embodiment, the fixing release device 100 further includes a button 150. Figure 1 , Figure 4 ) and moving part 155 ( Figure 4 , Figure 5 The moving part 155 is linked to the button 150, and the moving part 155 drives the limit component 120 to move to the exit position.
[0071] Specifically, such as Figure 4 As shown, button 150 includes a third inclined surface 152, and moving member 155 includes a fourth inclined surface 157 corresponding to the third inclined surface 152. When button 150 is pressed down, the third inclined surface 152 of button 150 pushes the fourth inclined surface 157 of moving member 155, causing moving member 155 to move... Figure 4 It moves to the right. It should be noted that the moving part 155, due to its bend, therefore... Figure 4 Only a small section appears on the cross-section; in reality, it will be like... Figure 5 As shown, it extends to the left side of the second limiting part 125.
[0072] In detail, such as Figure 5As shown, the movable member 155 includes a driving part 158, which is located at the left end of the movable member 155. The driving part 158 is used to drive the second limiting part 125 to move along the exit path. That is, in this embodiment, pressing the button 150 can drive the limiting component 120 to move along the exit path via the movable member 155. Since the button 150 does not need to be located next to the slot 12, it can be located on the edge of the motherboard 10 or in an empty space on the motherboard 10. This design not only allows the limiting component 120 to be easily driven by the button 150, but also allows the button 150 to be located remotely without being blocked by the expansion card 20. Of course, in one embodiment, the limiting component 120 may also extend to have a lever part (not shown) for the user to operate, thus eliminating the need for the button 150 and the movable member 155.
[0073] In addition, by Figure 5 As can be seen, the driving part 158 is offset from the locking block 146 of the second branch 143 in the moving direction of the second limiting part 125. Therefore, the locking block 146 of the second branch 143 does not affect the movement of the driving part 158.
[0074] In this embodiment, the width of the second limiting portion 125 is relatively large, at least covering a partial area of the width of each of the driving portion 158 and the locking block 146 of the second branch 143. Therefore, the movement of the driving portion 158 can drive the second limiting portion 125 to move towards the exit position, and when the second branch 143 rotates up to the exit path of the second limiting portion 125, such as Figure 3 As shown, the second limiting part 125 can also abut against the second inclined surface 148 of the locking block 146, or as... Figure 7 As shown, the second limiting part 125 can also be limited by the second limiting surface 149.
[0075] To remove the expansion card 20 from the slot 12, the user can simply press button 150 to move and fix the limiting component 120 to the exit position without limiting the expansion card 20. This will be explained in detail below.
[0076] Figure 6 This is a schematic diagram showing the expansion card inserted into the slot and the button pressed. Figure 7 yes Figure 6 A cross-sectional view of line segment BB. Please refer to... Figure 6 and Figure 7 When button 150 is pressed, the second limiting part 125 of the limiting component 120 is moved to the right by the driving part 158. Figure 3 and Figure 7 As can be seen, during the process of the limiting component 120 moving along the exit path to the exit position, the second branch 143 is squeezed and deformed, allowing the limiting component 120 to pass through. After the limiting component 120 passes through, the second branch 143 returns to its original position.
[0077] Specifically, the second limiting part 125 presses against the second inclined surface 148 of the locking block 146, causing the locking block 146 to move downwards into the locking groove. The second elastic member 145 is compressed, allowing the second limiting part 125 to move to the right and to the right side of the locking block 146. At this time, the first elastic member 130 is compressed.
[0078] When the second limiting part 125 moves to the right side of the locking block 146, the limiting component 120 is in the exit position. Since the locking block 146 is not pushed by the second limiting part 125, the elastic force accumulated by the second elastic member 145 causes the locking block 146 to reset upward.
[0079] As the compressed first elastic element 130 pushes against the second limiting part 125, the second limiting part 125 abuts to the left against the second limiting surface 149 of the latch 146 of the second branch 143. The second limiting part 125 is restricted by the second limiting surface 149 of the latch 146, thus keeping the limiting component 120 in the withdrawn position. The first limiting part 122 moves away from above the fixed hook 22, thus releasing the limiting effect on the fixed hook 22.
[0080] Therefore, the user can remove the expansion card 20 simply by moving it upwards. In other words, pressing the button 150 once will move the limiting component 120 to the exit position, and the limiting component 120 will be fixed in the exit position without needing to continuously press the button 150, making the operation quite convenient.
[0081] Figure 8 This is a partial cross-sectional schematic diagram of a fixing and releasing device according to another embodiment of this case. Figure 9 It is an expansion card Figure 8 A partial cross-sectional schematic diagram of the fixed release device. Figure 10 Is the expansion card located in Figure 8 A partial cross-sectional view of the container after the button has been pressed. Please refer to [link / reference]. Figures 8 to 10 , Figure 8 The main difference between this embodiment and the previous embodiment lies in the form of the second branch 143, 143a.
[0082] In this embodiment, the second branch 143a includes a spring arm. The spring arm includes a second inclined surface 148 and a second limiting surface 149, with the second limiting surface 149 located at the edge of the spring arm. In this embodiment, because the spring arm itself is flexible, the second branch 143a can achieve the limiting effect in a more streamlined manner.
[0083] Specifically, such as Figure 8 As shown, when the fixed hook 22 of the expansion card 20 has not yet pushed against the first inclined surface 123, the second branch 143a is affected by the torsion spring 135 and normally exits the exit path of the second limit part 125.
[0084] like Figure 9 As shown, when the expansion card 20 enters the receiving slot 112 and presses against the first branch 142, the second branch 143a rotates upward and enters the exit path of the second limiting part 125. At this time, the second limiting part 125 abuts against the second inclined surface 148 of the second branch 143a. At this time, the second branch 143a itself is flexible and will be pushed and slightly deformed, thus not affecting the subsequent rightward movement of the second limiting part 125.
[0085] To remove expansion card 20, press button 150. Figure 1 The driving part 158 drives the second limiting part 125 to move to the right. During the rightward movement of the second limiting part 125, it will move along the second inclined surface 148 of the second branch 143a. The second branch 143a itself is flexible and will deform downward until the second limiting part 125 moves to the right side of the second branch 143a, at which point the second branch 143a will spring back.
[0086] like Figure 10 As shown, the second limiting part 125 abuts against the second limiting surface 149 of the second branch 143a and is restricted to the withdrawn position. Therefore, the user can remove the expansion card 20 simply by moving the expansion card 20 upwards.
[0087] In summary, the fixing and releasing device of this case, through the above design, allows the limiting component to move towards the exit path when the fixing hook of the expansion card presses down on the first inclined surface of the limiting component, and the first elastic element accumulates elastic force. When the fixing hook leaves the first inclined surface and moves down into the receiving groove, the first elastic element releases, causing the limiting component to return to its original position. The first limiting surface is located above the fixing hook to restrict its upward movement, thus completing the fixing operation, which is quite convenient. When the fixing hook is in the receiving groove, it presses against the first branch, and the second branch rotates accordingly, entering the exit path of the second limiting part. To release the limiting of the fixing hook of the expansion card, simply move the limiting component along the exit path to the exit position. During this process, the second branch is compressed and deformed, allowing the limiting component to pass through. After the limiting component passes the second branch, the second branch returns to its original position. Therefore, when the limiting component is in the exit position, the second limiting part is restricted by the returned second limiting surface and remains in the exit position. At this point, the first limiting part moves away from above the fixed hook, thus releasing the limiting effect on the fixed hook. Therefore, the user can remove the expansion card simply by moving it upwards. In other words, once the limiting component is moved to the exit position, it will be fixed in the exit position without needing to continuously pull it. In one embodiment, the limiting component can be moved by pressing a button. Therefore, the user only needs to press the button once to move the limiting component to the exit position, eliminating the need for continuous button pressing and making the release operation quite convenient.
[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this case, and not to limit them; although this case has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this case.
Claims
1. A fixing and releasing device, suitable for limiting and releasing the fixing hook of an expansion card, characterized in that, Comprising: a seat body comprising a receiving slot for receiving the fixing hook of the expansion card; a limiting assembly movably arranged on the seat body, and comprising a first limiting part and a second limiting part, the first limiting part comprising a first inclined surface exposed to the seat body and a first limiting surface facing the receiving slot, and the second limiting part being erected on the first limiting surface; a first elastic member between the second limiting part and the seat body; and a lever structure comprising a pivot, a first branch extending from the pivot, and a second branch deformable, the pivot being pivotally connected to the seat body, the first branch extending into the receiving slot, and the second branch comprising a second limiting surface, when the fixing hook of the expansion card presses the first inclined surface of the limiting assembly, the limiting assembly moves along an exit path, and the first elastic member accumulates elastic force, when the fixing hook leaves the first inclined surface and moves downward to the receiving slot, the first elastic member releases to return the limiting assembly, and the first limiting surface is above the fixing hook to limit upward movement of the fixing hook, when the fixing hook is in the receiving slot, the fixing hook presses the first branch, the second branch rotates correspondingly, and enters the exit path of the second limiting part, in the process of the limiting assembly moving along the exit path to an exit position, the second branch is deformed to allow the limiting assembly to pass, and the second branch returns to normal, when the limiting assembly is in the exit position, the second limiting part is limited by the second limiting surface to stay in the exit position, and the first limiting part is away from the fixing hook to release the limitation on the fixing hook. Further comprising a torsion spring arranged on the pivot to make the first branch of the lever structure have a non-zero acute angle with the extension direction of the exit path in the normal state when not pressed, and the second branch exits the exit path of the second limiting part.
2. The fixed release device of claim 1, wherein, When the fixing hook in the receiving slot presses the first branch, the second branch abuts against the second limiting part.
3. The fixed release device of claim 1, wherein, The second branch comprises a slot body, a second elastic member, and a clamping block movably arranged in the slot body, and the second elastic member is located between the slot body and the clamping block.
4. The fixed release device of claim 1, wherein, The clamping block comprises a second inclined surface and the second limiting surface, when the fixing hook presses the first branch and the first limiting surface is above the fixing hook, the second limiting part abuts against the second inclined surface of the second branch, and when the limiting assembly is in the exit position, the second limiting part abuts against the second limiting surface.
5. The fixed release device of claim 4, wherein, The second branch comprises a spring arm.
6. The fixed release device of claim 1, wherein, The spring arm comprises a second inclined surface and the second limiting surface, and the second limiting surface is located at the edge of the spring arm, when the fixing hook presses the first branch and the first limiting surface is above the fixing hook, the second limiting part abuts against the second inclined surface, and when the limiting assembly is in the exit position, the second limiting part abuts against the second limiting surface.
7. The fixed release device of claim 6, wherein, Further comprising:
8. The fixed release device of claim 1, wherein, a button; and A moving part is connected with the button, and the moving part drives the limiting assembly to move to the exit position.
9. The fixed release device of claim 8, wherein, The button comprises a third inclined surface, and the moving part comprises a fourth inclined surface corresponding to the third inclined surface. When the button is pressed, the third inclined surface pushes the fourth inclined surface, so that the moving part moves.
10. The fixed release device of claim 8, wherein, The moving part comprises a driving part used to drive the second limiting part to move along the exit path, and the driving part is staggered with the second supporting part in the moving direction of the second limiting part.