Locking jig

Abstract

The utility model relates to the technical field of LED display screen assembly, and provides a locking jig which comprises a bottom plate and a positioning frame, a containing groove is formed in the bottom plate, and a lamp panel is placed in the containing groove; the positioning frame is arranged on the bottom plate and used for being arranged on the bottom shell in a sleeving mode along the rear end face of the bottom shell. The positioning frame is arranged on the bottom plate and is connected to the bottom plate to form a locking state; in the locking state, the bottom shell abuts against the lamp panel, and the positioning frame abuts against the peripheral side wall face of the bottom shell. According to the embodiment of the invention, the lamp panel is placed in the accommodating groove of the bottom plate, the front end face of the bottom shell is aligned to the lamp panel, then the positioning frame sleeves the bottom shell along the rear end face of the bottom shell, the positioning frame is connected to the bottom plate to form a locking state, at the moment, the bottom shell abuts against the lamp panel, and the positioning frame abuts against the peripheral side wall face of the bottom shell; therefore, the bottom shell and the lamp panel do not move relative to each other, and the probability that the bottom shell and the lamp panel deflect when being locked and assembled is small.

Description

Locking fixture Technical Field

[0001] This application relates to the field of LED display assembly technology, and in particular provides a locking fixture. Background Technology

[0002] LED displays are commonly found on the exterior walls or glass curtain walls of buildings, landmark buildings, and large advertising screens.

[0003] LED displays typically consist of LED modules and a housing. The LED modules are assembled onto the housing and combined to form the LED display for easy assembly and use. In related technologies, the assembly process of LED modules mainly involves using fasteners such as bolts and screws to secure the LED panels to the base shell.

[0004] However, in related technologies, the sides of the bottom shell are generally beveled and lack positioning structures. This makes it easy for misalignment to occur during the fixing and securing of the LED panel to the bottom shell, leading to an increased defect rate for the LED module. Summary of the Invention

[0005] The purpose of this application embodiment is to provide a locking fixture that aims to solve the problem of easy deflection when locking the bottom shell and the light panel in related technologies.

[0006] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0007] This application provides a locking fixture for positioning the bottom shell and lamp board of an LED module. The bottom shell has a rear end face with a smaller surface area and a front end face with a larger surface area, and the lamp board is connected to the front end face of the bottom shell. The locking fixture includes a base plate and a positioning frame. The base plate is provided with a receiving groove for inserting the lamp board. The positioning frame is disposed on the base plate and is used to fit onto the bottom shell along the rear end face of the bottom shell. The positioning frame is disposed on and connected to the base plate to form a locking state. In the locking state, the bottom shell abuts against the lamp board, and the positioning frame abuts against the peripheral wall of the bottom shell.

[0008] The beneficial effects of the embodiments of this application are as follows: The locking fixture provided in the embodiments of this application can be used to assist in the assembly of the bottom shell and the lamp board of the LED module. By placing the lamp board into the receiving groove of the bottom plate, aligning the front end of the bottom shell with the lamp board, and then fitting the positioning frame onto the bottom shell along the rear end of the bottom shell, the positioning frame is connected to the bottom plate to form a locking state. At this time, the bottom shell abuts against the lamp board, and the positioning frame abuts against the peripheral wall of the bottom shell, so that there is no relative movement between the bottom shell and the lamp board. Therefore, the probability of misalignment during the locking assembly of the bottom shell and the lamp board is small, which can effectively reduce the defect rate of the LED module.

[0009] In some embodiments, a limiting component is provided on the base plate, the limiting component including a first limiting part. In a first direction, the base plate is provided with first limiting parts on opposite sides of the slot end of the receiving groove. In the locked state, the positioning frame is limited between the first limiting parts on both sides.

[0010] In some embodiments, in a first direction, at least two first limiting portions are provided on either side of the base plate, and there is a gap between the at least two first limiting portions on the same side.

[0011] In some embodiments, the first limiting part has a first limiting end, and the first limiting end is provided with a first limiting protrusion, which is used to abut against the positioning frame.

[0012] In some embodiments, the limiting component includes a second limiting part. In the second direction, the bottom plate is provided with second limiting parts on opposite sides of the slot end of the receiving groove. In the locked state, the positioning frame is limited between the second limiting parts on both sides. The first direction is perpendicular to the second direction.

[0013] In some embodiments, the second limiting portion has a second limiting end, and the second limiting end is provided with a second limiting protrusion, which is used to abut against the positioning frame.

[0014] In some embodiments, a groove is also provided on the base plate, and the groove communicates with the receiving groove.

[0015] In some embodiments, the receiving groove is a rectangular groove, and the recess is located outside the top corner of the receiving groove and communicates with the top corner of the receiving groove.

[0016] In some embodiments, the positioning frame includes a first frame portion and a second frame portion connected to the first frame portion; the first frame portion abuts against the peripheral sidewall of the bottom shell.

[0017] In some embodiments, the size of the second frame portion is larger than the size of the first frame portion. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the overall structure of the locking fixture provided in an embodiment of this application;

[0020] Figure 2 is a schematic diagram of the structure of the base plate provided in an embodiment of this application;

[0021] Figure 3 is a schematic diagram of the positioning frame provided in an embodiment of this application;

[0022] Figure 4 is a structural schematic diagram of the LED module provided in an embodiment of this application;

[0023] Figure 5 is a schematic diagram of the bottom shell provided in an embodiment of this application.

[0024] The following are the labeling elements in the figure:

[0025] 1000, Locking fixture; 2000, LED module; 2100, Base shell; 2101, Rear end face; 2102, Front end face; 2103, Peripheral side wall; 2200, Light panel;

[0026] 100, base plate; 101, receiving groove; 102, groove; 110, limiting component; 111, first limiting part; 111a, limiting end; 111a1, first limiting protrusion; 112, second limiting part; 112a, second limiting end; 112a1, second limiting protrusion;

[0027] 200, Positioning frame; 210, First frame section; 220, Second frame section;

[0028] X, the first direction; Y, the second direction. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0030] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 application according to the specific circumstances.

[0033] LED displays are commonly found on the exterior walls or glass curtain walls of buildings, landmark structures, and large advertising screens. An LED display typically consists of LED modules and a housing. The LED modules are assembled onto the housing to form the LED display for easy modular use. In related technologies, the assembly process of the LED modules mainly involves using bolts, screws, and other fasteners to secure the LED panels to the base shell.

[0034] However, in related technologies, the sides of the bottom shell are generally beveled and lack positioning structures. This makes it easy for misalignment to occur during the fixing and securing of the LED panel to the bottom shell, leading to an increased defect rate for the LED module.

[0035] Based on the above considerations, in order to solve the problem of misalignment that easily occurs when locking the bottom shell and the lamp board in related technologies, a locking fixture is designed. The locking fixture can be used to assist in the assembly of the bottom shell and the lamp board of the LED module. By placing the lamp board into the receiving groove of the bottom plate, and then aligning the front end of the bottom shell with the lamp board, the positioning frame is then fitted onto the bottom shell along the rear end of the bottom shell and connected to the bottom plate to form a locking state. At this time, the bottom shell abuts against the lamp board, and the positioning frame abuts against the peripheral wall of the bottom shell, so there is no relative movement between the bottom shell and the lamp board. Therefore, the probability of misalignment during the locking assembly of the bottom shell and the lamp board is small, which can effectively reduce the defect rate of the LED module.

[0036] The locking fixture provided in this application will now be described in detail with reference to specific embodiments.

[0037] Please refer to Figures 1 to 5. This embodiment of the application provides a locking fixture 1000, which is used to position the bottom shell 2100 and the lamp board 2200 of an LED module 2000. The bottom shell 2100 has a smaller rear end face 2101 and a larger front end face 2102, and the lamp board 2200 is connected to the front end face 2102 of the bottom shell 2100. The locking fixture 1000 includes a base plate 100 and a positioning frame 200. A receiving groove 101 is provided on the bottom plate 100 for inserting the lamp panel 2200; a positioning frame 200 is provided on the bottom plate 100 and is used to fit onto the bottom shell 2100 along the rear end face 2101 of the bottom shell 2100; the positioning frame 200 is provided on the bottom plate 100 and connected to the bottom plate 100 to form a locked state; in the locked state, the bottom shell 2100 abuts against the lamp panel 2200, and the positioning frame 200 abuts against the peripheral side wall 2103 of the bottom shell 2100.

[0038] The lamp board 2200 is an electronic component used for lighting. It is typically composed of LED beads, circuit boards, driver circuits, and heat dissipation devices. The circuit boards and driver circuits control the light emission of the LED beads to achieve functions such as lighting or display.

[0039] The base shell 2100 refers to the main structure used to support the lamp panel 2200. The base shell 2100 has a front surface 2102 and a rear surface 2101; it should be understood that the front surface 2102 and the rear surface 2101 refer to the two opposite surface structures of the base shell 2100. The front surface 2102 is used to connect the lamp panel 2200 so that the lamp panel 2200 emits light towards the front surface 2102.

[0040] It should be understood that the rear end face 2101 of the bottom shell 2100 has a smaller surface area, while the front end face 2102 of the bottom shell 2100 has a larger surface area; therefore, the peripheral side wall 2103 of the bottom shell 2100 is an inclined surface.

[0041] The locking fixture 1000 includes a base plate 100 and a positioning frame 200; wherein, the base plate 100 refers to the main structure used to accommodate the lamp panel 2200 and to support the assembly. Optionally, the base plate 100 may be, but is not limited to, a circular plate, a triangular plate, a rectangular plate, or other polygonal plates.

[0042] The base plate 100 is provided with a receiving groove 101, which may be, but is not limited to, a circular groove, a rectangular groove, a triangular groove, etc. In some embodiments, the configuration of the base plate 100 is consistent with the configuration of the receiving groove 101. For example, the base plate 100 may be a rectangular plate, and the receiving groove 101 may be a rectangular groove formed on the rectangular plate.

[0043] The receiving groove 101 is used to accommodate the lamp board 2200; optionally, the size of the receiving groove 101 can be set to be approximately the same as the size of the lamp board 2200, so that the lamp board 2200 can be inserted into the receiving groove 101 and locked in place.

[0044] The positioning frame 200 refers to the frame structure used to fit onto the bottom shell 2100 and form a connection with the base plate 100; thus, the positioning frame 200 can be used to achieve a relatively fixed state between the bottom shell 2100 and the base plate 100.

[0045] Understandably, the positioning frame 200 can be a hollow annular structure, and the size of the hollow area of ​​the positioning frame 200 is larger than the size of the rear end face 2101 and smaller than the size of the front end face 2102. Thus, the positioning frame 200 can be fitted onto the lamp panel 2200 from the rear end face 2101 of the bottom shell 2100 until it abuts against the peripheral wall 2103 of the bottom shell 2100 and stops moving. It should be understood that the size of the hollow area of ​​the positioning frame 200 refers to the diameter (when the hollow area is circular) or the length and width (when the hollow area is rectangular). Similarly, the sizes of the front end face 2102 and the rear end face 2101 refer to their diameter (when the front end face 2102 and the rear end face 2101 are circular) or their length and width (when the front end face 2102 and the rear end face 2101 are rectangular).

[0046] The aforementioned locking state refers to the situation where the lamp panel 2200 is housed in the receiving groove 101 and the bottom shell 2100 is aligned and placed on the lamp panel 2200. The positioning frame 200 is connected to the bottom plate 100 to form a fixed position, and the positioning frame 200 is sleeved on the peripheral wall 2103 of the bottom shell 2100 and forms an abutment lock on the peripheral wall 2103 of the bottom shell 2100, so that the lamp panel 2200 and the bottom shell 2100 remain in an aligned and locked state.

[0047] The positioning frame 200 is connected to the base plate 100; optionally, the positioning frame 200 can be positioned and snapped onto the base plate 100; or, the positioning frame 200 can be connected and fixed to the base plate 100 by means of fastener connection, snap-on connection, etc.

[0048] The locking fixture 1000 provided in this application embodiment can be used to assist in assembling the bottom shell 2100 and the lamp board 2200 of the LED module 2000. By placing the lamp board 2200 into the receiving groove 101 of the bottom plate 100, aligning the front end face 2102 of the bottom shell 2100 with the lamp board 2200, and then fitting the positioning frame 200 onto the bottom shell 2100 along the rear end face 2101 of the bottom shell 2100, and connecting the positioning frame 200 to the bottom plate 100 to form a locking state, the bottom shell 2100 abuts against the lamp board 2200, and the positioning frame 200 abuts against the peripheral side wall 2103 of the bottom shell 2100. Thus, there will be no relative movement between the bottom shell 2100 and the lamp board 2200. Therefore, the probability of misalignment during the locking assembly of the bottom shell 2100 and the lamp board 2200 is small, which can effectively reduce the defect rate of the LED module 2000.

[0049] Please refer to Figures 1 to 5. In some embodiments, a limiting component 110 is provided on the base plate 100. The limiting component 110 includes a first limiting part 111. In the first direction X, the base plate 100 is provided with the first limiting part 111 on opposite sides of the slot end of the receiving groove 101. In the locked state, the positioning frame 200 is limited between the first limiting parts 111 on both sides.

[0050] The limiting component 110 includes a first limiting part 111; optionally, the first limiting part 111 may be, but is not limited to, a limiting block, a limiting plate, a limiting post, a limiting protrusion, a limiting bracket, or other structures that can limit the positioning frame 200.

[0051] The first limiting part 111 can be connected to the base plate 100 to form an integral part through fastener connection, hot melt connection, snap-fit ​​connection, integral molding, etc. In some embodiments, the first limiting part 111 can be a limiting block, which is integrally formed with the base plate 100.

[0052] In the first direction X, the first limiting part 111 can be provided on both sides of the base plate 100 at the slot end of the receiving groove 101; thus, after the lamp panel 2200 and the base shell 2100 are placed, the positioning frame 200 can be limited to move by the first limiting part 111 on both sides in the first direction X until the positioning frame 200 stops moving when it abuts against the outer peripheral wall of the base shell 2100. In this way, the movement of the positioning frame 200 in the first direction X is limited; the movement of the base shell 2100 fitted by the positioning frame 200 in the first direction X is also limited. Therefore, the probability of relative movement between the base shell 2100 and the lamp panel 2200 is smaller; with the auxiliary positioning by the base plate 100 and the positioning frame 200, the probability of misalignment during the locking and installation of the lamp panel 2200 and the base shell 2100 is also smaller; the defect rate of the LED module 2000 is effectively reduced.

[0053] It should be understood that the first direction X mentioned above can be any direction, such as the length direction or width direction of the base plate 100.

[0054] Please refer to Figures 1 to 5. In some embodiments, at least two first limiting portions 111 are provided on either side of the base plate 100 in the first direction X, and there is a gap between the at least two first limiting portions 111 on the same side.

[0055] In this embodiment, at least two first limiting portions 111 are provided on either side of the base plate 100 in the first direction X; for example, two, three or more first limiting portions 111 may be provided on either side of the base plate 100.

[0056] Meanwhile, there is a gap between at least two first limiting parts 111 on the same side; thus, the gap facilitates the gripping and moving operation of the positioning frame 200 and the bottom shell 2100; so as to facilitate removal after positioning and assembly.

[0057] Please refer to Figures 1 to 5. In some embodiments, the first limiting part 111 has a first limiting end 111a, and the first limiting end 111a is provided with a first limiting protrusion 111a1, which is used to abut against the positioning frame 200.

[0058] The first limiting end 111a refers to the end on the first direction X where the first limiting portions 111 on both sides are opposite each other, that is, the end along the first direction X toward the direction where the positioning groove is located.

[0059] The first limiting end 111a is provided with a first limiting protrusion 111a1; optionally, the first limiting protrusion 111a1 may be, but is not limited to, an arc-shaped protrusion, a triangular protrusion, etc. The first limiting protrusion 111a1 is used to limit the positioning frame 200.

[0060] With this configuration, the first limiting protrusion 111a1 provides a limiting effect on the positioning frame 200. Compared to the method of limiting the entire first limiting end 111a and the positioning frame 200, the contact area between the first limiting protrusion 111a1 and the positioning frame 200 is smaller, making the insertion and removal of the positioning frame 200 more convenient.

[0061] Please refer to Figures 1 to 5. In some embodiments, the limiting component 110 includes a second limiting part 112. In the second direction Y, the bottom plate 100 is provided with the second limiting part 112 on both sides of the slot end of the receiving groove 101. In the locked state, the positioning frame 200 is limited between the second limiting parts 112 on both sides. The first direction X is perpendicular to the second direction Y.

[0062] The limiting component 110 includes a second limiting part 112; optionally, the second limiting part 112 may be, but is not limited to, a limiting block, a limiting plate, a limiting post, a limiting protrusion, a limiting bracket, or other structures capable of limiting the positioning frame 200. In some embodiments, the second limiting part 112 may be a limiting block, which is integrally formed with the base plate 100.

[0063] The second limiting part 112 can be connected to the base plate 100 to form an integral unit through fastener connection, hot melt connection, snap-fit ​​connection, integral molding, etc.

[0064] In the second direction Y, the second limiting part 112 can be provided on both sides of the base plate 100 at the slot end of the receiving groove 101; thus, after the lamp panel 2200 and the base shell 2100 are placed, the positioning frame 200 can be limited to move by the second limiting part 112 on both sides in the second direction Y until the positioning frame 200 stops moving when it abuts against the outer peripheral wall of the base shell 2100. In this way, the movement of the positioning frame 200 in the second direction Y is limited; the movement of the base shell 2100 fitted by the positioning frame 200 in the second direction Y is also limited. Therefore, the probability of relative movement between the base shell 2100 and the lamp panel 2200 is smaller; with the auxiliary positioning by the base plate 100 and the positioning frame 200, the probability of misalignment during the locking and installation of the lamp panel 2200 and the base shell 2100 is also smaller; the defect rate of the LED module 2000 is effectively reduced.

[0065] It should be understood that the second direction Y can be any direction, such as the length direction or width direction of the base plate 100. The first direction X is perpendicular to the second direction Y; in some embodiments, the first direction X can be the width direction of the base plate 100, and the second direction Y can be the length direction of the base plate 100.

[0066] Please refer to Figures 1 to 5. In some embodiments, the second limiting part 112 has a second limiting end 112a, and the second limiting end 112a is provided with a second limiting protrusion 112a1, which is used to abut against the positioning frame 200.

[0067] The second limiting end 112a refers to the end of the second limiting portions 112 on both sides that are opposite each other in the second direction Y, that is, the end that is in the direction of the positioning groove along the second direction Y.

[0068] The second limiting end 112a is provided with a second limiting protrusion 112a1; optionally, the second limiting protrusion 112a1 may be, but is not limited to, an arc-shaped protrusion, a triangular protrusion, etc. The second limiting protrusion 112a1 is used to limit the positioning frame 200.

[0069] With this configuration, the second limiting protrusion 112a1 provides a limiting effect on the positioning frame 200. Compared to the method of limiting the entire second limiting end 112a and the positioning frame 200, the contact area between the second limiting protrusion 112a1 and the positioning frame 200 is smaller, making the insertion and removal of the positioning frame 200 more convenient.

[0070] Please refer to Figures 1 to 5. In some embodiments, the base plate 100 is further provided with a groove 102, which is connected to the receiving groove 101.

[0071] Optionally, the number of grooves 102 can be one, two, or any number; the grooves 102 can be circular grooves, rectangular grooves, arc-shaped grooves, etc.; the grooves 102 can be distributed at any location on the base plate 100.

[0072] The groove 102 is connected to the receiving groove 101; thus, when the lamp panel 2200 is inserted into the receiving groove 101, the lamp panel 2200 can be picked up and put down by grasping the side part of the lamp panel 2200 from the groove 102; thus, the convenience of operation can be improved.

[0073] Please refer to Figures 1 to 5. In some embodiments, the receiving groove 101 is a rectangular groove, and the recess 102 is located outside the top corner of the receiving groove 101 and connects to the top corner of the receiving groove 101.

[0074] In this embodiment, the receiving groove 101 is set as a rectangular groove, which facilitates the insertion and receiving of the rectangular plate-shaped lamp board 2200.

[0075] Simultaneously, the groove 102 is positioned on the outer side of the apex corner of the receiving groove 101 and connected to the apex corner of the receiving groove 101; thus, it is possible to grip from the groove 102 towards the apex corner of the receiving groove 101, thereby achieving gripping of the apex corner of the lamp panel 2200. In this way, during the gripping process, gripping can be achieved on both intersecting sides of the apex corner of the lamp panel 2200, effectively improving the stability of gripping the lamp panel 2200.

[0076] Please refer to Figures 1 to 5. In some embodiments, the positioning frame 200 includes a first frame portion 210 and a second frame portion 220 connected to the first frame portion 210; the first frame portion 210 abuts against the peripheral side wall 2103 of the bottom shell 2100.

[0077] The first frame portion 210 refers to a ring-shaped frame structure; similarly, the second frame portion 220 also refers to a ring-shaped frame structure. The first frame portion 210 and the second frame portion 220 are connected together along the axial direction of the ring to form a single unit, thereby assembling a ring-shaped positioning frame 200.

[0078] Please refer to Figures 1 to 5. In some embodiments, the size of the second frame portion 220 is larger than the size of the first frame portion 210.

[0079] In this embodiment, the size of the second frame portion 220 can be set to be larger than the size of the first frame portion 210, that is, the length of the second frame portion 220 is greater than the length of the first frame portion 210, and the width of the second frame portion 220 is greater than the width of the first frame portion 210.

[0080] Thus, the outer surface of the second frame portion 220 protrudes beyond the range of the first frame portion 210; when the positioning frame 200 is fitted onto the bottom shell 2100 and moves into the limiting component 110, the probability of the first frame portion 210 contacting the first limiting portion 111 and the second limiting portion 112 of the limiting component 110 is lower; and when the first frame moves to abut against the peripheral side wall 2103 of the bottom shell 2100, the second frame portion 220 contacting the first limiting portion 111 and the second limiting portion 112 of the limiting component 110, with the first limiting portion 111 and the second limiting portion 112 limiting the second frame. This effectively improves the smoothness of the positioning frame 200's movement towards the bottom plate 100 immediately after fitting onto the bottom shell 2100.

[0081] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A locking fixture, characterized in that: The locking fixture is used to position the bottom shell and the lamp board of the LED module. The bottom shell has a rear end face with a smaller surface area and a front end face with a larger surface area, and the lamp board is used to connect to the front end face of the bottom shell. The locking fixture includes a base plate with a receiving groove for inserting the lamp board; and a positioning frame disposed on the base plate for fitting onto the bottom shell along the rear end face. The positioning frame is disposed on and connected to the base plate to form a locking state. In the locking state, the bottom shell abuts against the lamp board, and the positioning frame abuts against the peripheral wall of the bottom shell.

2. The locking fixture according to claim 1, characterized in that: The base plate is provided with a limiting component, the limiting component including a first limiting part. In a first direction, the base plate is provided with the first limiting part on both sides of the groove end of the receiving groove. In the locked state, the positioning frame is limited between the first limiting parts on both sides.

3. The locking fixture according to claim 2, characterized in that: In the first direction, at least two first limiting portions are provided on each side of the base plate, and there is a gap between the at least two first limiting portions on the same side.

4. The locking fixture according to claim 3, characterized in that: The first limiting part has a first limiting end, and the first limiting end is provided with a first limiting protrusion, which is used to abut against the positioning frame.

5. The locking fixture according to claim 4, characterized in that: The limiting component includes a second limiting part. In the second direction, the bottom plate is provided with the second limiting part on both sides of the groove end of the receiving groove. In the locked state, the positioning frame is limited between the second limiting parts on both sides. The first direction is perpendicular to the second direction.

6. The locking fixture according to claim 5, characterized in that: The second limiting part has a second limiting end, and the second limiting end is provided with a second limiting protrusion, which is used to abut against the positioning frame.

7. The locking fixture according to any one of claims 1 to 6, characterized in that: The base plate is also provided with a groove, which is connected to the receiving groove.

8. The locking fixture according to claim 7, characterized in that: The receiving groove is a rectangular groove, and the recess is located outside the top corner of the receiving groove and connects to the top corner of the receiving groove.

9. The locking fixture according to any one of claims 1 to 6, characterized in that: The positioning frame includes a first frame portion and a second frame portion connected to the first frame portion; the first frame portion abuts against the peripheral side wall of the bottom shell.

10. The locking fixture according to claim 9, characterized in that: The size of the second frame portion is larger than the size of the first frame portion.

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