Mounting frame for connector

Abstract

The present invention provides a mounting frame for a connector, comprising a frame body and spring tabs. The frame body is provided with spring tab mounting positions; the spring tabs are mounted at the spring tab mounting positions of the frame body; each spring tab mounting position comprises a spring tab matching surface; each spring tab at least partially abuts against the corresponding spring tab matching surface; the spring tab matching surfaces are obliquely arranged, thereby increasing the engagement overlap between the upper edge of a fixing slot and a hooking ledge of a connector module, allowing for more stable engagement of the connector module; moreover, the contact area between the upper edge and the hooking ledge is larger, resulting in better stress distribution during engagement.

Description

A connector mounting frame

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. CN202411773545.6, filed on December 4, 2024, entitled "Mounting Frame for a Connector", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to the field of connector mounting technology, and more specifically to a connector mounting frame. Background Technology

[0004] With industrial development, industrial products are becoming increasingly integrated and sophisticated, creating the need to meet the transmission requirements of various signals and power within limited spaces. Therefore, connectors and their mounting frames have been widely used, and their importance has become increasingly prominent. Existing connector mounting frame products, such as those described in patent publication CN114731010A, have a protruding tongue on the movable side of the spring that passes through the frame slot, securing the insert mounting platform via the protruding tongue. However, the contact area between the protruding tongue and the insert mounting platform is relatively small, posing a risk of the tongue piercing the mounting platform in practical applications, potentially leading to mating failure.

[0005] Another existing connector mounting frame product B, as described in patent publication number CN105977693B, features an arc-shaped section on the movable side of the spring contact, with a window within the arc-shaped section. The upper edge of the window in the arc-shaped section is used to fix a mounting bracket for the insert. Because the arc-shaped section is easily deformed under stress, it can only withstand relatively small tensile forces, posing a risk of mating failure in practical applications. Summary of the Invention

[0006] Therefore, in response to at least one of the above problems, the present invention provides a connector mounting frame.

[0007] This invention is implemented using the following scheme:

[0008] This invention proposes a connector mounting frame, comprising:

[0009] The frame body includes a spring clip mounting position and an inner cavity with a connector module mounting position.

[0010] A spring clip is installed in the spring clip mounting position of the frame body; the spring clip includes a movable side, the movable side is provided with a fixing slot, the fixing slot can be sleeved on the mounting plate of the connector module, and the upper edge of the fixing slot can abut against the mounting plate, thereby fixing the connector module to the inner cavity of the frame body;

[0011] The feature is that the spring mounting position includes a spring mating surface, and the spring is at least partially fitted and abutted against the spring mating surface, wherein the spring mating surface is inclined.

[0012] In one embodiment, the spring contact mating surface and the side of the inner cavity are at an angle, and the direction in which the connector module is inserted into the inner cavity of the frame body is defined as from top to bottom, and the frame wall thickness at the spring contact mating surface gradually increases from top to bottom.

[0013] In one embodiment, the fixed slot is a planar structure, and the upper edge is substantially on the same plane as the main body on the movable side.

[0014] In one embodiment, movable side reinforcing ribs are provided on both sides of the movable side, and the movable side reinforcing ribs are bent away from the inner cavity.

[0015] In one embodiment, the upper edge of the spring mounting position is provided with an upper edge reinforcing rib.

[0016] In one embodiment, a central rib is provided in the middle of adjacent spring mounting positions, and the upper edge reinforcing rib of adjacent spring mounting positions and the central rib form a "T" shaped structure.

[0017] In one embodiment, a limiting structure is provided between the spring and the frame body, the limiting structure being used to limit the displacement of the movable side.

[0018] In one embodiment, the spring is provided with a first limiting part, and the frame body is provided with a second limiting part. The first limiting part can abut against the second limiting part due to the displacement of the movable side, thereby forming the limiting structure between the spring and the frame body. When the spring is installed with the frame body and the spring is not subjected to external force, there is a gap between the first limiting part and the second limiting part. When the first limiting part abuts against the second limiting part, the fixing structure can be separated from the connector module.

[0019] In one embodiment, the spring sheet is provided with a limiting tongue as the first limiting part, and the limiting tongue is located in the lower middle part of the fixed slot; the frame body is provided with a spring sheet limiting rib as the second limiting part, and the limiting tongue can abut against the spring sheet limiting rib due to the displacement of the movable side; when the spring sheet is installed with the frame body and the spring sheet is not subjected to external force, there is a gap between the limiting tongue and the spring sheet limiting rib.

[0020] In one embodiment, the movable side is further provided with an installation slot, which is located in the lower center of the fixed slot. The installation slot and the fixed slot are connected, and the limiting tongue is disposed in the lower center of the installation slot.

[0021] In one embodiment, the limiting tongue includes an extension section and an abutment section. The extension section extends from the lower edge of the mounting groove in a direction away from the inner cavity, and the abutment section extends upward from the end of the extension section away from the mounting groove. The abutment section is used to abut against the elastic limiting rib.

[0022] In one embodiment, the top surface of the abutting section is not higher than the lower edge of the fixing groove.

[0023] In one embodiment, the spring sheet further has a fixed side and a transition section. The fixed side is used to fix the spring sheet to the frame body. The transition section connects the fixed side and the movable side, and at least the transition section has elastic deformation capability. A connecting section is also provided between the fixed side and the transition section. The connecting section is bent at an angle relative to the fixed side and the transition section, so that compared with the straight state between the fixed side and the transition section, the fixed side has a bending angle relative to the transition section, and the bending angle is greater than 0 degrees.

[0024] In one embodiment, the spring sheet further includes a guide section, which is inclined from the upper part of the movable side toward the direction close to the inner cavity.

[0025] The technical solution provided by this invention has the following technical effects:

[0026] 1. The present invention provides a connector mounting frame, including a frame body and a spring piece. The spring piece mounting position includes a spring piece mating surface. The spring piece is at least partially fitted and abutted against the spring piece mating surface. The spring piece mating surface is inclined, thereby increasing the amount of engagement between the upper edge of the fixing slot and the mounting plate of the connector module, enabling a more stable engagement of the connector module. Furthermore, the contact area between the upper edge and the mounting plate is larger, resulting in better engagement force.

[0027] 2. The fixed slot has a planar structure, with its upper edge roughly on the same plane as the main body on the movable side. After the spring is installed on the frame body, the upper edge of the fixed slot is close to the spring mating surface. Compared with the existing spring with an arc-shaped section on the movable side, the planar structure of the fixed slot can greatly improve the stress of the fixed slot, increase its load-bearing capacity, and is less prone to deformation. Attached Figure Description

[0028] Figure 1 is a perspective view of the main frame of the first embodiment;

[0029] Figure 2 is an enlarged view of point A in Figure 1;

[0030] Figure 3 is an enlarged view of point B in Figure 1;

[0031] Figure 4 is a perspective view of the spring sheet of the first embodiment;

[0032] Figure 5 is a side view of the spring sheet of the first embodiment;

[0033] Figure 6 is a schematic diagram of the frame body and spring clip installation in the first embodiment;

[0034] Figure 7 is a perspective view of the mounting frame of the first embodiment;

[0035] Figure 8 is a full sectional view of the mounting frame and connector module installation in the first embodiment;

[0036] Figure 9 is an enlarged view of point D in Figure 8;

[0037] Figure 10 is a schematic diagram of the installation of the mounting frame and connector module in the first embodiment;

[0038] Figure 11 is a perspective view of the first embodiment with the mounting frame and connector module installed.

[0039] Figure 12 is a perspective view of the spring clip of the second embodiment;

[0040] Figure 13 is a side view of the spring sheet of the second embodiment. Detailed Implementation

[0041] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0042] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0043] Example 1

[0044] Referring to Figures 1-11, this embodiment provides a connector mounting frame 1, including a frame body 10 and a spring contact 20. The frame body 10 includes a first side plate 11 and a second side plate 12, a first end plate 13, and a second end plate 14, which are opposite to the first end plate 11. The first side plate 11 and the second side plate 12 are parallel to each other, and the first end plate 13 and the second end plate 14 are parallel to each other. The first side plate 11 is perpendicular to the first end plate 13 and the second end plate 14, and the second side plate 12 is perpendicular to the first end plate 13 and the second end plate 14. The first side plate 11, the second side plate 12, the first end plate 13, and the second end plate 14 together enclose the inner cavity 16 of the frame body 10. Referring to Figures 10-11, the connector module 2 can be inserted into the inner cavity 16 of the frame body 10 along direction F and fixed. The outer surfaces of the first side plate 11 and the second side plate 12 of the frame body 10 are provided with spring clip mounting positions 15. These spring clip mounting positions 15 are used to assemble spring clips 20, thereby assembling the spring clips 20 onto the outer surfaces of the frame body 10. The spring clips 20 are used to fix the connector module 2 to the inner cavity 16 of the frame body 10. The inner cavity 16 is provided with at least one mounting position for the connector module 2. In this embodiment, referring to Figures 10-11, the inner cavity 16 is provided with six mounting positions for the connector module 2. Of course, the inner cavity 16 may also be provided with more or fewer mounting positions for the connector module 2.

[0045] The spring piece 20 is made of an elastic material. The spring piece 20 has a fixed side 21, a transition section 22, and a movable side 23. The fixed side 21 is used to fix the spring piece 20 to the frame body 10; the movable side 23 is provided with a first fixing structure 27, which is used to fix the connector module 2 to the inner cavity 16 of the frame body 10. The transition section 22 connects the fixed side 21 and the movable side 23. At least the transition section 22 has elastic deformation capability. The spring piece 20 can undergo elastic deformation, causing the movable side 23 to displace. The displacement of the movable side 23 can cause the first fixing structure 27 to engage or disengage from the connector module 2.

[0046] Referring to Figures 1-11, in this embodiment, the first fixing structure 27 is a fixing slot 27, which can be fitted onto the mounting platform 201 of the connector module 2. The upper edge 271 of the fixing slot 27 abuts against the top surface of the mounting platform 201, and the bottom surface of the mounting platform 201 abuts against the lower edge of the fixing slot 27, thereby fixing the connector module 2 in the inner cavity 16 of the frame body 10. The upper edge 271 of the fixing slot 27 and the mounting platform 201 have a long straight-line contact, resulting in a large contact area. In other embodiments, the first fixing structure 27 can be a protruding tongue, which engages with the mounting platform 201 of the connector module 2, thereby fixing the connector module 2 in the inner cavity 16 of the frame body 10. Compared to the existing spring clips, which have a small contact area between the protruding tongue and the mounting platform, this embodiment has a larger contact area between the upper edge 271 and the mounting platform 201, resulting in better contact force.

[0047] Referring to Figures 1-11, and especially Figures 1, 2, 8, and 9, the spring mounting position 15 of the frame body 10 includes a spring mating surface 155, and the spring 20 is at least partially fitted and abutted against the spring mating surface 155. The spring mating surface 155 is inclined, and there is an angle E between the spring mating surface 155 and the side of the inner cavity 16. The angle E is greater than 0°, which increases the amount of engagement between the upper edge 271 of the fixing slot 27 on the movable side 23 and the mounting platform 201 of the connector module 2, enabling a more stable engagement of the connector module 2. Furthermore, the contact area between the upper edge 271 and the mounting platform 201 is larger, resulting in better engagement force.

[0048] The direction F of the connector module 2 being inserted into the inner cavity 16 of the frame body 10 is defined as from top to bottom. The frame wall thickness at the spring mating surface 155 gradually increases from top to bottom. When the frame body 10 has a certain external size, the included angle E between the spring mating surface 155 and the side of the inner cavity 16 will also increase the strength of the frame body 10 when the same amount of engagement is achieved.

[0049] In this embodiment, the fixed slot 27 has a planar structure, with its upper edge 271 and the main body of the movable side 23 generally located on the same plane. After the spring piece 20 is installed on the frame body 10, the upper edge 271 of the fixed slot 27 abuts against the spring piece mating surface 155. Compared with the existing spring piece with an arc-shaped section on the movable side, the planar structure of the fixed slot 27 in this embodiment can greatly improve the stress on the fixed slot 27, increase its load-bearing capacity, and prevent deformation.

[0050] A limiting structure 30 is provided between the spring 20 and the frame body 10 to limit the displacement of the movable side 23, thereby preventing the spring 20 from easily undergoing plastic deformation and failing when the connector module 2 exits the inner cavity 16 of the frame body 10 without being limited, thus improving the service life of the mounting frame 1.

[0051] The movable side 23 is also provided with an installation slot 232, which is located below the fixed slot 27 and is connected to the fixed slot 27.

[0052] Specifically, the length of the mounting slot 232 is less than the length of the fixing slot 27, and the mounting slot 232 is located in the middle of the fixing slot 27.

[0053] The spring piece 20 is provided with a first limiting part 26. In this embodiment, the first limiting part 26 is a limiting tongue 26. The limiting tongue 26 is provided in the lower middle part of the mounting slot 232. The limiting tongue 26 is a bent hook-shaped tongue. Specifically, the limiting tongue 26 includes an extension section 261 and an abutment section 262. The extension section 261 extends from the lower edge of the mounting slot 232 in a direction away from the inner cavity 16. The abutment section 262 extends upward from the end of the extension section 261 away from the mounting slot 232. By providing the extension section 261, the gap between the abutment section 262 and the movable side mounting slot 232 can be increased.

[0054] Furthermore, the top surface of the abutment section 262 is not higher than the lower edge of the fixing slot 27, so that when the mounting plate 201 of the connector module 2 is inserted into the fixing slot 27, the abutment section 262 will not prevent the mounting plate 201 from being inserted into the fixing slot 27.

[0055] The spring clip mounting position 15 of the frame body 10 is provided with a second limiting part 151. In this embodiment, the second limiting part 151 is a spring clip limiting rib 151. A spring clip limiting rib 151 that cooperates with the limiting tongue 26 is provided at a corresponding position on the frame body 10. The spring clip limiting rib 151 is used to limit the excessive flipping of the limiting tongue 26 when it flips outward. When the movable side 23 flips outward, it drives the limiting tongue 26 to move outward. When the limiting tongue 26 flips outward to a certain extent, the abutting section 262 of the limiting tongue 26 abuts against the spring clip limiting rib 151, thereby limiting the continued movement of the limiting tongue 26. In addition, when the spring clip 20 is installed to the spring clip mating surface 155, the extension section 261 is provided so that the abutting section 262 can pass through the spring clip limiting rib 155 for smooth installation. After installation, a certain gap can be formed between the abutting section 262 and the spring clip limiting rib 155. Referring to Figures 1-11, the limiting tongue 26 can abut against the spring limiting rib 151 due to the displacement of the movable side 23, thereby forming a limiting structure 30 between the spring 20 and the frame body 10.

[0056] When the spring piece 20 is installed with the frame body 10 and the spring piece 20 is not subjected to external force, there is a gap between the limiting tongue 26 and the spring piece limiting rib 151. This gap allows the movable side 23 of the spring piece 20 to generate a certain displacement when an elastic deformation occurs, which is beneficial for the connector module 2 to be installed into or removed from the inner cavity 16 of the frame body 10.

[0057] When the first limiting part 26 abuts against the second limiting part 151, the first fixing structure 27 can be separated from the connector module 2. In other embodiments, the first limiting part 26 and the second limiting part 151 can also be other forms, such as bosses that can abut against each other. In other embodiments, the limiting structure 30 between the spring piece 20 and the frame body 10 can also be a traction member provided between the spring piece 20 and the frame body 10, such as a traction rope.

[0058] In this embodiment, the first limiting part 26 is a limiting tongue 26, and the second limiting part 151 is a spring limiting rib 151. The structure is simple and easier to manufacture.

[0059] In this embodiment, the spring limiting rib 151 is located on the side of the limiting tongue 26 away from the inner cavity 16, and the displacement of the movable side 23 away from the inner cavity 16 causes the first fixing structure 27 to separate from the connector module 2.

[0060] The movable side 23 has a generally planar main body. A guide section 231 is provided on the upper part of the movable side 23. The guide section 231 is inclined from the upper part of the movable side 23 towards the inner cavity 16. Therefore, when the connector module 2 is inserted into the inner cavity 16 of the frame body 10 along direction F in Figure 10, the guide section 231 on the upper part of the movable side 23 can act as a guide. The connector module 2 slides along the guide section 231 and expands the movable side 23 of the spring piece 20, thereby creating sufficient space for the connector module 2 to be inserted into the inner cavity 16 of the frame body 10 along direction F in Figure 10. After the connector module 2 is inserted into the inner cavity 16 of the frame body 10, the spring piece 20 can automatically spring back, and the first fixing structure 27 of the spring piece 20 snaps into the connector module 2, thereby fixing the connector module 2 in the inner cavity 16 of the frame body 10.

[0061] Referring to Figures 1-11, in this embodiment, movable side reinforcing ribs 29 are provided on both sides of the movable side 23. These reinforcing ribs 29 increase the rigidity of the movable side 23, thereby further preventing plastic deformation and failure, and improving the service life of the spring piece 20. The movable side reinforcing ribs 29 are bent away from the inner cavity 16, allowing the spring piece 20 to be more closely fitted to the spring piece mounting position 15, and the movable side 23 to be more closely fitted to the spring piece mating surface 155. This results in a larger engagement between the fixing slot 27 and the mounting platform 201 of the connector module 2, making the installation more stable.

[0062] Referring to Figures 1 and 2, an upper edge reinforcing rib 156 protrudes from the upper edge of the spring clip mounting position 15, thereby enhancing the structural strength of the spring clip mounting position 15. A middle protruding rib 157 protrudes from the middle of adjacent spring clip mounting positions 15, and the upper edge reinforcing rib 156 and the middle protruding rib 157 of adjacent spring clip mounting positions 15 form a "T"-shaped structure, which can further enhance the side wall structural strength of the frame body 10.

[0063] In this embodiment, referring to Figures 1-11, the fixing side 21 is used to fix the spring piece 20 to the frame body 10. A snap-fit ​​tongue 24 is provided on each of the left and right sides of the fixing side 21. The snap-fit ​​tongue 24 is a bent tongue, and a snap-fit ​​interface 152 is provided on each of the lower sides of the spring piece mounting position 15. The snap-fit ​​tongue 24 can be snapped into the snap-fit ​​interface 152, thereby limiting the movement of the spring piece 20.

[0064] The fixed side 21 is also provided with a second fixing structure 25, which is a fixing slot. The spring plate mounting position 15 is provided with a fixing boss 153. The second fixing structure 25 is used to engage with the fixing boss 153, so that the spring plate 20 is firmly limited on the spring plate mounting position 15 based on the engagement of the locking tongue 24 and the locking interface 152.

[0065] A connecting section 28 is also provided between the fixed side 21 and the transition section 22. The connecting section 28 is bent at an angle relative to the fixed side 21 and the transition section 22. Compared with the straight state between the fixed side 21 and the transition section 22, the fixed side 21 has a bending angle C relative to the transition section 22. The bending angle C is greater than 0 degrees. Therefore, when the spring piece 20 is installed on the spring piece mounting position 15, the preload of the spring piece 20 can be increased, so that the spring piece 20 can more firmly fix the connector module 2 in the inner cavity 16 of the frame body 10.

[0066] This embodiment illustrates a fixed connection method in which the spring piece 20 is fixed to the frame body 10 via the fixed side 21. As those skilled in the art can anticipate, the spring piece 20 and the frame body 10 can also be fixed by means of fusion, welding, riveting, locking, or screwing.

[0067] In this embodiment, the assembly steps of the frame body 10 and the spring piece 20 are as follows:

[0068] Insert the fixed side 21 of the spring piece 20 from the bottom of the frame body 10, and then push the spring piece 20 to the top of the frame body 10 until the snap-fit ​​tongue 24 of the spring piece 20 is snapped into the snap-fit ​​interface 152. At the same time, the second fixing structure 25 and the fixing boss 153 snap-fit ​​together to complete the assembly of the frame body 10 and the spring piece 20.

[0069] The installation steps for connector module 2 are as follows:

[0070] 1. Align connector module 2 with the mounting position of connector module 2 in the inner cavity 16;

[0071] 2. Press the connector module 2 into the mounting frame 1. The mounting platform 201 of the connector module 2 pushes open the movable side 23 of the spring piece 20 through the inclined surface of the guide section 231 of the spring piece 20.

[0072] 3. Continue pressing the connector module 2 into the mounting frame 1. When you hear a "click" sound, the connector module 2 is installed in place, the spring 20 automatically springs back, and the first fixing structure 27 of the spring 20 locks onto the mounting brackets 201 on both sides of the connector module 2, completing the installation.

[0073] The disassembly steps for the connector module are as follows:

[0074] 1. Remove the connector module 2 and the mounting frame 1 components;

[0075] 2. Simultaneously flip the spring pieces 20 on both sides of the mounting frame 1 outwards until the limiting tongue 26 of the spring piece 20 contacts the spring piece limiting rib 151 of the frame body 10, so that the spring piece 20 is in a force-open state. At this time, the first fixing structure 27 of the spring piece 20 separates from the mounting platform 201 of the connector module 2, and pushes the connector module 2 upwards until the connector module 2 separates from the mounting frame 1, completing the disassembly.

[0076] Example 2

[0077] As shown in Figures 12-13, the difference between this embodiment and Embodiment 1 is that in this embodiment, the spring piece 20A is not provided with a limiting tongue 26, and correspondingly, the frame body is not provided with a spring piece limiting rib. The rest is the same as in Embodiment 1. This embodiment has a simpler structure than Embodiment 1.

[0078] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A mounting frame of a connector, comprising: a frame body, the frame body being provided with a spring mounting position, the frame body further comprising an inner cavity, the inner cavity being provided with a mounting position of a connector module; and a spring, the spring being mounted on the spring mounting position of the frame body, the spring comprising a movable side, the movable side being provided with a fixing notch, the fixing notch being capable of sleeving a hanging table of the connector module, and an upper edge of the fixing notch being capable of abutting against the hanging table, so as to fix the connector module in the inner cavity of the frame body; characterized in that the spring mounting position comprises a spring matching surface, the spring being at least partially arranged in abutment with the spring matching surface, and the spring matching surface being arranged in an inclined manner. An angle is formed between the spring matching surface and a side surface of the inner cavity, a direction in which the connector module is inserted into the inner cavity of the frame body is defined as from top to bottom, and a thickness of a frame wall at the spring matching surface gradually increases from top to bottom.

2. The mounting frame of claim 1, wherein: The fixing notch is in a planar structure, and the upper edge and a main body of the movable side are substantially located in a same plane.

3. The mounting frame of claim 1, wherein: A movable side reinforcing rib is arranged on both sides of the movable side and is arranged in a bent manner away from the inner cavity.

4. The mounting frame of claim 1, wherein: An upper edge reinforcing rib is protruded on an upper edge of the spring mounting position.

5. The mounting frame of claim 1, wherein: A middle protruding rib is protruded in a middle of adjacent spring mounting positions, and the upper edge reinforcing rib and the middle protruding rib of the adjacent spring mounting positions form a "T" shaped structure.

6. The mounting frame of claim 5, wherein: A limiting structure is further arranged between the spring and the frame body, and the limiting structure is used for limiting displacement of the movable side.

7. The mounting frame of claim 1, wherein: A first limiting part is arranged on the spring, a second limiting part is arranged on the frame body, the first limiting part is capable of abutting against the second limiting part due to displacement of the movable side, so as to form the limiting structure between the spring and the frame body, and a gap is formed between the first limiting part and the second limiting part when the spring and the frame body are mounted and the spring is not subjected to external force, and the fixing notch is capable of being separated from the connector module when the first limiting part and the second limiting part abut against each other.

8. The mounting frame of claim 7, wherein: A limiting tongue is arranged on the spring as the first limiting part, a spring limiting rib is arranged on the frame body as the second limiting part, the limiting tongue is capable of abutting against the spring limiting rib due to displacement of the movable side, and a gap is formed between the limiting tongue and the spring limiting rib when the spring and the frame body are mounted and the spring is not subjected to external force.

9. The mounting frame of claim 8, wherein: An installation notch is further arranged on the movable side, the installation notch is located in a lower middle part of the fixing notch, the installation notch and the fixing notch are in communication, and the limiting tongue is arranged in a lower middle part of the installation notch.

10. The mounting frame of claim 9, wherein: The limiting tongue comprises an extending segment and an abutting segment, the extending segment is formed by extending from a lower edge of the installation notch away from the inner cavity, the abutting segment is formed by extending upward from an end of the extending segment away from the installation notch, and the abutting segment is used for abutting against the spring limiting rib.

11. The mounting frame of claim 10, wherein: ​ 12. The mounting frame of claim 11, wherein: The top surface of the abutting section is not higher than the lower edge of the fixed notch.

13. The mounting frame of claim 1, wherein: The elastic sheet further has a fixed side for fixing the elastic sheet on the frame body and a transition section connected between the fixed side and the movable side, at least the transition section having an elastic deformation capability; a connecting section is further arranged between the fixed side and the transition section and is arranged in an angular bending manner relative to the fixed side and the transition section, so that the fixed side has a bending process angle relative to the transition section, which is greater than 0 degrees, compared with a flat state between the fixed side and the transition section.

14. The mounting frame of claim 1, wherein: The elastic sheet further includes a guide section which is arranged in an inclined manner from the upper portion of the movable side towards the direction close to the inner cavity.

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