Clamping assembly and circuit board assembly

Abstract

The utility model relates to the technical field of product assembly, aims to solve the problems of inconvenience and low assembly efficiency of an existing assembly mode, and provides a clamping assembly and a circuit board assembly. The clamping assembly comprises a base and a cover piece, the base comprises a first end and a second end which are distributed in the first direction, and the first end is connected to the circuit board. The second end comprises an elastic arm extending in the first direction, the elastic arm is provided with a first groove, a second groove and a middle protrusion, the first groove and the second groove are arranged at intervals in the first direction, and the middle protrusion is arranged between the first groove and the second groove in a protruding mode. The cover piece is matched with the base in a sliding mode in the first direction, and the cover piece comprises a first protrusion. The cover piece can move in the first direction under the action of external force, and enables the first protrusion to pass through the middle protrusion to be switched between the first position and the second position. The method has the beneficial effects that the target piece is convenient to assemble, and the assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic products, in particular, relates to a clamping assembly and a circuit board assembly. BACKGROUND

[0002] Some existing hard disk box assemblies, such as M.2 card assemblies, are directly connected to a circuit board by screws, and a screwdriver or other tools are needed to assist in the fixing process. This assembly method is inconvenient to operate and has low assembly efficiency. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a clamping assembly and a circuit board assembly to solve the problem of inconvenient assembly and low assembly efficiency of existing assembly methods.

[0004] Embodiments of the present application provide a clamping assembly, including a base and a cover. The base includes a first end and a second end distributed along a first direction, and the first end is connected to a circuit board. The second end includes an elastic arm extending along the first direction, and the elastic arm has a first groove, a second groove, and an intermediate protrusion. The first groove and the second groove are arranged at intervals along the first direction, and the intermediate protrusion is protruding between the first groove and the second groove. The cover is slidably fitted to the base along the first direction, and the cover includes a first protrusion. The cover can be moved along the first direction under the action of an external force, and the first protrusion can pass through the intermediate protrusion to switch between a first position and a second position.

[0005] In the first position, the first protrusion is fitted to the first groove, the cover corresponds to a target piece, and the target piece can be locked between the cover and the base. In the second position, the first protrusion is fitted to the second groove, and the cover is away from the target piece to unlock the target piece.

[0006] In embodiments of the present application, the clamping assembly can move the cover relative to the base along the first direction under the action of an external force to lock or unlock the target piece, without the need for a screwdriver or other tools to assist. The operation is simple, easy to disassemble and assemble, and has high versatility.

[0007] In one possible implementation, the intermediate protrusion is in a slope shape with a higher middle protrusion and lower side protrusions, and a side surface of the intermediate protrusion facing the first groove is a first guide surface, and a side surface of the intermediate protrusion facing the second groove is a second guide surface. The first protrusion has a first pressing surface and a second pressing surface. The first pressing surface and the second pressing surface are respectively matched with the first guide surface and the second guide surface. When the first protrusion moves from the second position to the first position, the first pressing surface can press the first guide surface under the action of an external force, and the intermediate protrusion elastically retreats, so that the first protrusion can move to the first groove in the first direction. When the first protrusion moves from the first position to the second position, the second pressing surface can press the second guide surface under the action of an external force, and the intermediate protrusion elastically retreats, so that the first protrusion can move to the second groove in the first direction.

[0008] In one possible implementation, the base includes a fastener and a ring arm, and the ring arm is arranged at the first end. The fastener has a column segment, a first support plate and a second support plate. The column segment is used for being connected to the circuit board. The first support plate and the second support plate are connected to the outer periphery of the column segment in the axial direction of the column segment. The ring arm is matched between the first support plate and the second support plate.

[0009] In one possible implementation, the cover has a pressing surface arranged at a side of the cover facing the fastener. The fastener includes a first support surface. When the cover is located at the first position, the target piece is clamped between the pressing surface and the first support surface.

[0010] In one possible implementation, the base further includes a first seat, a second seat and a connecting portion. The first seat is connected to the ring arm, the second seat is spaced apart from the first seat in the first direction, and the connecting portion is connected between the first seat and the second seat. The second seat has a protruding portion protruding from the connecting portion in the second direction. The protruding portion is spaced apart from the first seat in the first direction to define a third groove. The elastic arm is connected between the first seat and the protruding portion, and is arranged to be spaced apart from the connecting portion in the second direction, and the second direction is perpendicular or obliquely intersected with the first direction.

[0011] In one possible implementation, the base includes two elastic arms arranged at two sides of the second end in the second direction. The cover includes a plate body and two side plates connected to two sides of the plate body in the second direction and extending towards the base. Each side plate is provided with a first protrusion protruding at a side of the side plate facing the base. The two first protrusions are respectively matched with the two elastic arms.

[0012] In a possible implementation, the two side plates respectively protrude limiting protrusions, and the two limiting protrusions respectively extend into the two third grooves along the second direction. Each limiting protrusion corresponds to a base and an extension along the first direction. When the cover is in the first position, the limiting protrusion abuts against the base. When the cover is in the second position, the limiting protrusion abuts against the extension to limit the sliding distance of the cover relative to the base.

[0013] In a possible implementation, the circuit board is provided with a positioning hole. The second seat portion protrudes a positioning protrusion towards the side of the circuit board, and the positioning protrusion is fitted into the positioning hole.

[0014] In a possible implementation, the target member is provided with a yielding groove, and the yielding groove is formed on the side of the target member close to the clamping assembly and corresponds to the fastener. The cover is provided with an avoiding groove, and the avoiding groove is formed on the side of the cover close to the fastener and corresponds to the fastener when the cover is in the second position.

[0015] Embodiments of the present application also provide a circuit board assembly, which comprises a target member, a circuit board and a clamping assembly. The circuit board comprises a board body and a connector. The base of the clamping assembly is connected to the board body and is spaced apart from the connector along the first direction. One end of the target member abuts against and is electrically connected to the connector, and the other end is clamped to the clamping assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 FIG. 1 is a structural schematic diagram of a circuit board assembly according to an embodiment of the present application.

[0018] Figure 2 FIG. 2 is a structural schematic diagram of a clamping assembly according to an embodiment of the present application. Figure 1 FIG. 3 is an enlarged view of region A in FIG. 2.

[0019] Figure 3 FIG. 4 is a sectional view of the circuit board assembly along line D-D in FIG. 2. Figure 2

[0020] Figure 4 FIG. 5 is a structural schematic diagram of a clamping assembly according to another embodiment of the present application.

[0021] Figure 5 FIG. 6 is a structural schematic diagram of a clamping assembly according to another embodiment of the present application.

[0022] Figure 6 FIG. 7 is a structural schematic diagram of a clamping assembly according to another embodiment of the present application. Figure 4 ​An exploded view of the clamping assembly in the card connector.

[0023] Figure 7 An exploded view of the clamping assembly in the card connector. Figure 4

[0024] Figure 8 An exploded view of the clamping assembly in the card connector. Figure 4

[0025] Figure 9 An exploded view of the clamping assembly in the card connector. Figure 6

[0026] Figure 10 An exploded view of the clamping assembly in the card connector. Figure 6

[0027] Figure 11 An exploded view of the clamping assembly in the card connector. Figure 6

[0028] Main component symbol explanation:

[0029] Circuit board assembly 1000

[0030] Target piece 100

[0031] Let go of the slot 1001

[0032] Ground end 1002

[0033] Circuit board 200

[0034] Connector 2001

[0035] Positioning hole 2002

[0036] Ground point 2003

[0037] Circuit board body 2004

[0038] Clamping assembly 300

[0039] Base 10

[0040] First end 101

[0041] Fastener 1011

[0042] Column segment 1012

[0043] Head 1012a

[0044] First support plate 1013

[0045] First support surface 1013a

[0046] Second support plate 1014 ​​​​​

[0047] Second support surface 1014a

[0048] Ring arm 1015

[0049] First seat 1016

[0050] Second end 102

[0051] Elastic arm 1021

[0052] First groove 1022

[0053] Second groove 1023

[0054] Intermediate protrusion 1024

[0055] First guide surface 1025

[0056] Second guide surface 1026

[0057] Second seat 1027

[0058] Extension 1028

[0059] Positioning protrusion 1029

[0060] Connection portion 103

[0061] Third groove 104

[0062] Cover 11

[0063] Pressing surface 111

[0064] Plate body 112

[0065] Avoidance groove 1121

[0066] Side plate 113

[0067] First protrusion 1131

[0068] First pressing surface 1132

[0069] Second pressing surface 1133

[0070] Limiting protrusion 1134

[0071] Third guide surface 1135

[0072] First direction X

[0073] Second direction Y

[0074] Third direction Z

[0075] The following detailed description will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0076] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0077] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be intervening elements. When an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be intervening elements. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0079] Some embodiments of the present application are described in detail. The following embodiments and features of the embodiments can be combined with each other in the case of no conflict.

[0080] Embodiments

[0081] Referring to Figure 1 The present embodiment provides a circuit board assembly 1000, which comprises a target piece 100, a circuit board 200 and a clamping assembly 300. The circuit board 200 comprises a circuit board body 2004 and a connector 2001. The base 10 of the clamping assembly 300 is connected to the circuit board body 2004 and is spaced apart from the connector 2001 along a first direction X. One end of the target piece 100 abuts and is electrically connected to the connector 2001, and the other end is clamped to the clamping assembly 300.

[0082] In the present embodiment, the circuit board assembly 1000 can be used in a desktop host, a server, etc., which is not limited herein. In the present embodiment, the target piece 100 can be an M.2 card or other electronic component that needs to be connected to the circuit board 200.

[0083] In the present embodiment, the connector 2001 is electrically connected to the circuit board 200, and the target piece 100 is electrically connected to the circuit board 200 by being plugged into the connector 2001.

[0084] In the embodiment, the connector 2001 and the clamping assembly 300 are respectively matched with the two ends of the target piece 100 along the first direction X to fix the target piece 100 to the circuit board 200.

[0085] Referring to Figures 2 to 7 , the embodiment provides a clamping assembly 300, which comprises a base 10 and a cover 11. The base 10 comprises a first end 101 and a second end 102 distributed along a first direction X, and the first end 101 is connected to a circuit board 200. The second end 102 comprises an elastic arm 1021 extending along the first direction X, and the elastic arm 1021 has a first groove 1022, a second groove 1023 and an intermediate protrusion 1024. The first groove 1022 and the second groove 1023 are arranged at intervals along the first direction X, and the intermediate protrusion 1024 is protruded between the first groove 1022 and the second groove 1023. The cover 11 is slidably matched with the base 10 along the first direction X, and the cover 11 comprises a first protrusion 1131. The cover 11 can be moved along the first direction X under the action of an external force, and the first protrusion 1131 can pass through the intermediate protrusion 1024 to switch between a first position and a second position.

[0086] Wherein, in the first position (see Figure 4 ), the first protrusion 1131 is matched with the first groove 1022, the cover 11 corresponds to the target piece 100, and the target piece 100 can be locked between the cover 11 and the base 10. In the second position (see Figure 5 ), the first protrusion 1131 is matched with the second groove 1023, and the cover 11 is away from the target piece 100 to unlock the target piece 100.

[0087] In the embodiment, by manually operating the cover 11, an external force along the first direction X can be applied to slide the cover 11 relative to the base 10, so as to fix the target piece 100 between the cover 11 and the base 10 or unlock the target piece 100. No screwdriver or other tool is needed for fixing, and the operation is convenient and the assembly efficiency is high.

[0088] In the embodiment, when the target piece 100 is locked, the cover 11 corresponds to the target piece 100, and the target piece 100 is fixed between the cover 11 and the base 10. When the target piece 100 is unlocked, the cover 11 is away from the target piece 100, and the target piece 100 is only supported on the base 10 and can be removed from the side away from the base 10.

[0089] In the embodiment, the intermediate protrusion 1024 is in a slope shape with the middle part higher and the two sides lower, and the side surface of the intermediate protrusion 1024 facing the first groove 1022 is the first guide surface 1025, and the side surface of the intermediate protrusion 1024 facing the second groove 1023 is the second guide surface 1026. The first protrusion 1131 has a first pressing surface 1132 and a second pressing surface 1133. The first pressing surface 1132 and the second pressing surface 1133 are matched with the first guide surface 1025 and the second guide surface 1026 respectively. When the first protrusion 1131 moves from the second position to the first position, the first pressing surface 1132 can press the first guide surface 1025 under the action of an external force, and the intermediate protrusion 1024 elastically retreats, so that the first protrusion 1131 can move to the first groove 1022 along the first direction X. When the first protrusion 1131 moves from the first position to the second position, the second pressing surface 1133 can press the second guide surface 1026 under the action of an external force, and the intermediate protrusion 1024 elastically retreats, so that the first protrusion 1131 can move to the second groove 1023 along the first direction X.

[0090] In the embodiment, the first guide surface 1025 and the second guide surface 1026 are respectively inclinedly intersected with the first direction X. When the cover 11 moves from the second position to the first position, the first pressing surface 1132 is matched with the first guide surface 1025, and can press the first guide surface 1025 along the first direction X, so that the intermediate protrusion 1024 elastically retreats, and the first protrusion 1131 can move to the second groove 1023 by passing the intermediate protrusion 1024. When the cover 11 moves from the second position to the first position, the second pressing surface 1133 is matched with the second guide surface 1026, and can press the second guide surface 1026 along the first direction X, so that the intermediate protrusion 1024 elastically retreats, and the first protrusion 1131 can move to the first groove 1022 by passing the intermediate protrusion 1024.

[0091] In the embodiment, the circuit board 200 is provided with a positioning hole 2002. The second seat 1027 is provided with a positioning protrusion 1029 on the side facing the circuit board 200, and the positioning protrusion 1029 is matched with the positioning hole 2002.

[0092] In the embodiment, the first end 101 is fixed to the circuit board 200 through the fastener 1011, and the positioning protrusion 1029 is provided on the second end 102 and matched with the positioning hole 2002 to limit the second end 102 on the circuit board 200. The base 10 is fixed to the circuit board 200 through the fastener and the positioning protrusion 1029, and the operation is convenient.

[0093] Referring to Figures 8 to 11In this embodiment, the base 10 includes a fastener 1011 and a ring arm 1015, with the ring arm 1015 disposed at the first end 101. The fastener 1011 has a column segment 1012, a first support plate 1013, and a second support plate 1014. The column segment 1012 is used to connect to the circuit board 200. The first support plate 1013 and the second support plate 1014 are axially spaced together on the outer periphery of the column segment 1012. The ring arm 1015 engages between the first support plate 1013 and the second support plate 1014.

[0094] In this embodiment, the ring arm 1015 has an opening, and the fastener 1011 can elastically squeeze the opening and engage with the ring arm 1015. The fastener 1011 is rotatably fitted to the ring arm 1015 so that the fastener 1011 can be threaded to and fixed to the circuit board 200 via the column segment 1012.

[0095] In this embodiment, the fastener 1011 is made of a conductive material and is connected to the ground point 2003 of the circuit board 200. The target component 100 has a ground terminal 1002 (see...). Figure 2 The grounding terminal 1002 is supported by the fastener 1011 and is electrically connected to the grounding point 2003 of the circuit board 200 (see) through the fastener 1011. Figure 2 ).

[0096] In this embodiment, the second support plate 1014 has a second support surface 1014a facing the side of the circuit board 200. The second support surface 1014a abuts against the ground point 2003 of the circuit board 200 so that the target component 100 can be electrically connected to the ground point 2003 of the circuit board 200 by fastener 1011.

[0097] In this embodiment, the cover 11 has a pressing surface 111, which is disposed on the side of the cover 11 facing the fastener 1011. The fastener 1011 includes a first support surface 1013a. When the cover 11 is in a first position, the target 100 is sandwiched between the pressing surface 111 and the first support surface 1013a.

[0098] In this embodiment, a first support surface 1013a is disposed on the side of the first support plate 1013 facing the cover 11 to support the target member 100. The cover 11 also has a third guide surface 1135, which is disposed on the side of the cover 11 facing the target member 100. The third guide surface 1135 is set at an obtuse angle to the first support surface 1013a, so that when the cover moves to the first position along the first direction X, the third guide surface 1135 can abut against the target member 100 and guide the pressing surface 111 to press against the side of the target member 100 away from the fastener 1011.

[0099] In the embodiment, the base 10 further comprises a first seat 1016, a second seat 1027 and a connecting portion 103. The first seat 1016 is connected to the ring arm 1015, the second seat 1027 is spaced apart from the first seat 1016 along the first direction X, and the connecting portion 103 is connected between the first seat 1016 and the second seat 1027. The second seat 1027 has a protruding portion 1028 protruding from the connecting portion 103 along the second direction Y. The protruding portion 1028 is spaced apart from the first seat 1016 along the first direction X to define a third groove 104, and the elastic arm 1021 is connected between the first seat 1016 and the protruding portion 1028 and is arranged spaced apart from the connecting portion 103 along the second direction Y.

[0100] In the embodiment, the second direction Y is perpendicular to the first direction X. In other embodiments, the second direction is obliquely intersected with the first direction.

[0101] In the embodiment, the second seat 1027 comprises two protruding portions 1028 on both sides along the second direction Y, and the connecting portion 103 is connected between the first seat 1016 and the second seat 1027, so that the first seat 1016 corresponds to one protruding portion 1028 on each side along the second direction Y to define two third grooves 104.

[0102] In the embodiment, the target piece 100 is provided with a clearance groove 1001, which is formed on the side of the target piece 100 close to the clamping assembly 300, and corresponds to the fastener 1011. The cover piece 11 is provided with a clearance groove 1121, which is formed on the side of the cover piece 11 close to the fastener 1011, and corresponds to the fastener 1011 when the cover piece 11 is in the second position.

[0103] In the embodiment, the fastener 1011 has a head portion 1012a (see Figure 11 ), and the clearance groove 1001 corresponds to the head portion 1012a, so that the target piece 100 is supported on the first support plate 1013 (see Figure 11 ). When the cover piece 11 is in the second position, the clearance groove 1121 corresponds to the head portion 1012a of the fastener 1011, so that the head portion 1012a is exposed, facilitating installation operation and having high versatility.

[0104] Continuing to refer to Figures 7 to 11In the embodiment, the base 10 comprises two elastic arms 1021, which are respectively arranged at two sides of the second end 102 along the second direction Y. The cover 11 comprises a plate body 112 and two side plates 113, which are connected to the plate body 112 at two sides of the plate body 112 along the second direction Y and extend towards the base 10. Each side plate 113 is provided with a first protrusion 1131, which is provided at a side of the side plate 113 facing the base 10. The two first protrusions 1131 are respectively matched with the two elastic arms 1021.

[0105] In the embodiment, the two elastic arms 1021 are respectively arranged in the two third grooves 104, and the two elastic arms 1021 are respectively arranged apart from the connecting portions 103, so that the two first protrusions 1131 can be respectively matched with the two elastic arms 1021, and the elastic arms 1021 can elastically retreat.

[0106] In the embodiment, the two side plates 113 are respectively provided with limiting protrusions 1134, and the two limiting protrusions 1134 respectively extend into the two third grooves 104 along the second direction Y. Each limiting protrusion 1134 corresponds to a base 10 and a protruding portion 1028 along the first direction X. When the cover 11 is located at the first position, the limiting protrusion 1134 abuts against the base 10. When the cover 11 is located at the second position, the limiting protrusion 1134 abuts against the protruding portion 1028, so as to limit the sliding distance of the cover 11 relative to the base 10.

[0107] In the embodiment, the two side plates 113 are respectively connected to the plate body 112 at two sides of the plate body 112 along the second direction Y and extend towards the base 10 along the third direction Z, and the two first protrusions 1131 are respectively provided at opposite sides of the two side plates 113 along the second direction Y, so as to be matched with the elastic arms 1021.

[0108] In summary, the base 10 fixed to the circuit board 200 is arranged to support the target piece 100, and the cover 11 matched with the base 10 is arranged. The cover 11 is slidably matched with the base 10 and is switched between the first position and the second position. When the cover 11 is located at the first position, the target piece 100 is locked between the cover 11 and the base 10. When the cover 11 is located at the second position, the cover 11 is away from the target piece 100, so as to unlock the target piece 100. The target piece 100 can be locked or unlocked by moving the cover 11, without the aid of a screwdriver and the like, so as to facilitate the disassembly and assembly of the target piece 100 and improve the versatility.

[0109] The above embodiments are only used to illustrate the technical solutions of the present application rather than limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application.

Claims

1. A snap-fit ​​assembly for assembling a target component onto a circuit board, characterized in that, include: The base includes a first end and a second end distributed along a first direction. The first end is connected to the circuit board. The second end includes an elastic arm extending along the first direction. The elastic arm has a first groove, a second groove, and a middle protrusion. The first groove and the second groove are spaced apart along the first direction. The middle protrusion protrudes between the first groove and the second groove. A cover, which is slidably fitted to the base along the first direction, the cover including a first protrusion; The cover can move along the first direction under the action of external force, and the first protrusion can switch between a first position and a second position by passing through the intermediate protrusion; wherein, in the first position, the first protrusion engages with the first groove, the cover corresponds to the target piece, and can lock the target piece between the cover and the base; In the second position, the first protrusion engages with the second groove, and the cover moves away from the target component to unlock the target component.

2. The snap-fit ​​assembly according to claim 1, characterized in that: The central protrusion is sloping with a higher central protrusion and lower protrusions on both sides. The surface of the central protrusion facing the first groove is a first guide surface, and the surface of the central protrusion facing the second groove is a second guide surface. The first protrusion has a first pressing surface and a second pressing surface; the first pressing surface and the second pressing surface respectively cooperate with the first guide surface and the second guide surface; When the first protrusion moves from the second position to the first position, the first pressing surface can press against the first guiding surface under the action of external force, and cause the middle protrusion to elastically retract, thereby enabling the first protrusion to move to the first groove along the first direction; when the first protrusion moves from the first position to the second position, the second pressing surface can press against the second guiding surface under the action of external force, and cause the middle protrusion to elastically retract, thereby enabling the first protrusion to move to the second groove along the first direction.

3. The snap-fit ​​assembly according to claim 1, characterized in that: The base includes a fastener and a ring arm, the ring arm being disposed at the first end; The fastener has a column segment, a first support plate, and a second support plate; The column segment is used for connection to the circuit board; The first support plate and the second support plate are connected at intervals along the axial direction of the column segment to the outer periphery of the column segment; the ring arm is fitted between the first support plate and the second support plate.

4. The snap-fit ​​assembly according to claim 3, characterized in that: The cover has a pressing surface, which is located on the side of the cover facing the fastener; The fastener includes a first support surface; When the cover is in the first position, the target is sandwiched between the pressing surface and the first supporting surface.

5. The snap-fit ​​assembly according to claim 4, characterized in that: The base also includes a first seat portion, a second seat portion, and a connecting portion; The first seat is connected to the ring arm, the second seat and the first seat are spaced apart along the first direction, and the connecting part is connected between the first seat and the second seat; The second seat portion has a protrusion that extends outward from the connecting portion along a second direction; The protrusion is spaced apart from the first seat along the first direction to define a third groove. The elastic arm is connected between the first seat and the protrusion and is spaced apart from the connecting portion along the second direction, which is perpendicular to or obliquely intersecting the first direction.

6. The snap-fit ​​assembly according to claim 5, characterized in that: The base includes two elastic arms, which are respectively disposed on both sides of the second end along the second direction; The cover includes a plate and two side plates, the two side plates being connected to both sides of the plate along the second direction and extending toward the side closer to the base; Each of the side plates is provided with a first protrusion, which is located on the side of the side plate facing the base; the two first protrusions are respectively engaged with the two elastic arms.

7. The snap-fit ​​assembly according to claim 6, characterized in that: The two side plates are respectively provided with limiting protrusions, and the two limiting protrusions extend into the two third grooves along the second direction; Each of the limiting protrusions corresponds to one of the bases and one of the protrusions along the first direction; When the cover is in the first position, the limiting protrusion abuts against the base; when the cover is in the second position, the limiting protrusion abuts against the protrusion to limit the sliding distance of the cover relative to the base.

8. The snap-fit ​​assembly according to claim 5, characterized in that: The circuit board has positioning holes; The second seat has a positioning protrusion on the side facing the circuit board, and the positioning protrusion is engaged with the positioning hole.

9. The snap-fit ​​assembly according to claim 3, characterized in that: The target component is provided with a clearance groove, which is located on the side of the target component near the snap-fit ​​assembly and corresponds to the fastener. The cover is provided with a clearance groove, which is located on the side of the cover near the fastener. When the cover is in the second position, the clearance groove corresponds to the fastener.

10. A circuit board assembly, characterized in that, include: Target component; A circuit board, the circuit board including a board body and connectors; The snap-fit ​​assembly according to any one of claims 1-9; The base of the snap-fit ​​assembly is connected to the plate body and corresponds to the connector at intervals along the first direction; One end of the target component abuts against and is electrically connected to the connector, while the other end is snapped into the snap-fit ​​assembly.

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