Floating card edge connector

Abstract

The utility model discloses a floating card edge connector which is used for electrically connecting a first connection object and a second connection object. The floating card edge connector comprises a main shell, a first floating shell, a second floating shell and a plurality of contact pieces. The first floating housing includes a first fitting opening into which the first connection object is inserted in a first direction, and the second floating housing includes a second fitting opening into which the second connection object is inserted in the first direction. The first floating housing and the second floating housing are configured to be independently movable relative to the main housing in a plane orthogonal to the first direction. The first embedding opening and the second embedding opening are respectively provided with an abutting structure, and the first connecting object and the second connecting object are allowed to be inserted into the first embedding opening and the second embedding opening in an interference fit mode respectively. As a result, the first object to be connected and the second object to be connected are prevented from laterally displacing or loosening in the first fitting opening and the second fitting opening.

Description

Technical Field

[0001] The utility model relates to a connector, especially a floating card edge connector. Background Art

[0002] Japanese Patent Publication No. 2000-12127 discloses a double-ended card edge connector. This double-ended card edge connector is used to directly connect a card board to another card board for electrical connection therebetween, including: a housing having fitting grooves formed at opposite ends; and a plurality of contacts connected to a plurality of conductive gaskets formed at the edge of each end of the card board and located on opposite sides.

[0003] However, this card edge connector does not have the function of absorbing the installation position error when each card board is installed to a machine housing or a motherboard. Therefore, this card edge connector may be damaged by mechanical force, or the card board inserted into the connector may be undesirably bent. This will cause mechanical force to act on the components mounted on the card board, resulting in the problem that the solder at the component mounting portion may come off. Summary of the Utility Model

[0004] One object of the utility model is to provide a floating card edge connector that can absorb the installation position error of the connection object and prevent damage to the connector or the connection object.

[0005] Another object of the utility model is to provide a floating card edge connector that can prevent the inserted connection object from loosening.

[0006] Still another object of the utility model is to provide a floating card edge connector that can be miniaturized, which is beneficial to use in a limited installation space.

[0007] According to an embodiment of the utility model, there is provided a floating card edge connector for inserting a first connection object and a second connection object into the floating card edge connector in a first direction, thereby electrically connecting the first connection object and the second connection object to each other. The floating card edge connector includes:

[0008] A main housing;

[0009] A first floating housing including a first fitting opening for inserting the first connection object;

[0010] A second floating housing including a second fitting opening for inserting the second connection object. The first floating housing and the second floating housing are configured to be movable independently relative to the main housing, and the opening directions of the first fitting opening and the second fitting opening face away from each other;

[0011] A plurality of contacts, the plurality of contacts being arranged in a second direction perpendicular to the first direction, each of the plurality of contacts including a first contact portion, a first holding portion, a first spring portion, a connecting portion, a second spring portion, a second holding portion, and a second contact portion. The first contact portion, the first holding portion, and the first spring portion are arranged in a third direction perpendicular to the first direction and the second direction. The second contact portion, the second holding portion, and the second spring portion are arranged in the third direction. The first contact portion is positioned in the first fitting opening and is for contacting the first connection object. The first holding portion extends from the first contact portion and is held by the first floating housing. The first spring portion extends from the first holding portion and is connected to the second spring portion through the connecting portion. The second contact portion is positioned in the second fitting opening and is for contacting the second connection object. The second holding portion extends from the second contact portion and is held by the second floating housing. The second spring portion extends from the second holding portion;

[0012] Each of the first fitting opening and the second fitting opening has two abutting structures on two inner sidewalls that are opposite to each other in the second direction, allowing the first connection object and the second connection object to be respectively inserted into the first fitting opening and the second fitting opening in an interference fit manner.

[0013] For the floating card edge connector according to the present invention, the distance between the two abutting structures is less than the width of the insertion end of the first connection object or the second connection object.

[0014] For the floating card edge connector according to the present invention, grooves are formed on both sides of each abutting structure in the third direction to weaken the rigidity of the two abutting structures.

[0015] For the floating card edge connector according to the present invention, the main housing includes an upper surface and a lower surface that are orthogonal to the third direction and opposite to each other, a first side surface and a second side surface that are orthogonal to the second direction and opposite to each other, a first inclined surface connecting the upper surface and the first side surface, a second inclined surface connecting the upper surface and the second side surface, a third inclined surface connecting the lower surface and the first side surface, and a fourth inclined surface connecting the lower surface and the second side surface, such that when viewing the floating card edge connector from the first direction, the outer contour of the main housing is octagonal.

[0016] For the floating card edge connector according to the present invention, the main housing is composed of two housing halves, and each housing half is formed with two locking portions and two engaging protrusions.

[0017] For the floating card edge connector according to the present invention, the two locking portions are respectively formed on the first inclined surface and the fourth inclined surface, and the two engaging protrusions are respectively formed on the first inclined surface and the fourth inclined surface.

[0018] For the floating card-edge connector according to the present utility model, the locking part and the engaging protrusion of one of the two housing halves are respectively engaged with the engaging protrusion and the locking part of the other of the two housing halves.

[0019] For the floating card-edge connector according to the present utility model, the main housing includes an internal space, the first floating housing, the second floating housing and the plurality of contact members are received in the internal space, and the first floating housing and the second floating housing are supported in the internal space in a floating manner by the plurality of contact members. Wherein, a plurality of limiting grooves for receiving the connecting parts of the plurality of contact members are formed on the upper inner side wall and the lower inner side wall of the main housing, and the connecting parts of the plurality of contact members are restricted from moving in the second direction by the plurality of limiting grooves.

[0020] For the floating card-edge connector according to the present utility model, the main housing is configured to allow the first floating housing and the second floating housing to move on a plane orthogonal to the first direction.

[0021] For the floating card-edge connector according to the present utility model, the first floating housing and the second floating housing can move independently of each other.

[0022] For the floating card-edge connector according to the present utility model, since the floating housing can float relative to the main housing, when the connection object is connected to the connector, the floating housing can absorb a certain position error through floating to avoid damage to the connector or the connection object. At the same time, a tightening structure is further provided in the fitting opening of the floating housing, and the tightening structure can prevent the connection object from loosening and improve the connection stability. Moreover, the present utility model also arranges the locking part and the engaging protrusion for assembling the main housing reasonably to meet the requirement of miniaturizing the connector, which is beneficial to the use of the connector in a limited installation space.

[0023] Those with ordinary technical knowledge in the technical field to which the present utility model belongs will be able to best understand the technical features and other purposes and advantages of the present utility model after referring to the specification and drawings of the present utility model. Description of the Drawings

[0024] Figure 1 is a perspective view of a floating card-edge connector according to an embodiment of the present utility model.

[0025] Figure 2 is a schematic diagram generally showing two connection objects inserted into the floating card-edge connector along the fitting direction.

[0026] Figure 3 is a schematic diagram showing that two connection objects have been inserted into the floating card-edge connector.

[0027] Figure 4 Is an exploded perspective view of a floating card edge connector according to an embodiment of the present utility model.

[0028] Figure 5 Is a front view of the first floating housing of the floating card edge connector according to an embodiment of the present utility model.

[0029] Figure 6 Is a sectional view of the first floating housing of the floating card edge connector along line AA according to an embodiment of the present utility model.

[0030] Figure 7 Is a perspective view showing an assembly composed of the first floating housing, the second floating housing, and the contact member.

[0031] Figure 8 Is a perspective view of the main housing of the floating card edge connector according to an embodiment of the present utility model.

[0032] Figure 9 Is an exploded perspective view of the main housing of the floating card edge connector according to an embodiment of the present utility model.

[0033] Figure 10 Is a front view of the main housing of the floating card edge connector according to an embodiment of the present utility model.

[0034] Figure 11 Is a sectional view of the floating card edge connector along line BB according to an embodiment of the present utility model.

[0035] Figure 12 Is a sectional view of the floating card edge connector along line CC according to an embodiment of the present utility model.

[0036] Description of reference numerals

[0037] 10: Floating card edge connector

[0038] 11: Main housing

[0039] 110: Housing half

[0040] 111: Limit groove

[0041] 112: Locking portion

[0042] 113: Limit keyway

[0043] 114: Engagement protrusion

[0044] 11a: Upper surface

[0045] 11b: Lower surface

[0046] 11c: First side surface

[0047] 11d: Second side surface

[0048] 11e: First inclined plane

[0049] 11f: Second inclined plane

[0050] 11g: Third inclined plane

[0051] 11h: Fourth inclined plane

[0052] 12: First floating housing

[0053] 120: First fitting opening

[0054] 121: Tightening structure

[0055] 1211: Tightening protrusion

[0056] 122: Groove

[0057] 123: Slot hole

[0058] 124: Slot hole

[0059] 125: Limiting square key

[0060] 13: Second floating housing

[0061] 135: Limiting square key

[0062] 14: Contact member

[0063] 141: First contact portion

[0064] 142: Second contact portion

[0065] 143: First holding portion

[0066] 1431: Engaging tab

[0067] 144: Second holding portion

[0068] 1441: Engaging tab

[0069] 145: First spring portion

[0070] 146: Second spring portion

[0071] 147: Connecting portion

[0072] D1: First direction

[0073] D2: Second direction

[0074] D3: Third direction

[0075] P1: First connection object

[0076] P2: Second connection object

[0077] SP: Internal space

[0078] W1: Distance between the tightening structures

[0079] W2: Width of the first connecting object Detailed implementation mode

[0080] The floating card-edge connector according to the embodiment of the present invention will be described below with reference to the accompanying drawings. In each of the drawings, the same elements are denoted by the same reference numerals. The drawings are not drawn to scale.

[0081] Figure 1 is a perspective view of the floating card-edge connector according to the embodiment of the present invention. The floating card-edge connector as a whole is denoted by the reference numeral 10. The floating card-edge connector 10 includes a main housing 11 (formed by two housing halves 110), a first floating housing 12, a second floating housing 13 (shown in Figure 4 ) and a plurality of contacts 14. In this embodiment, the floating card-edge connector 10 is in the form of a double-ended card-edge connector. As Figure 2 shown, the first connecting object P1 and the second connecting object P2 in the form of a card board are inserted into the floating card-edge connector 10 along the first direction D1 (i.e., the fitting direction). Figure 3 is a schematic diagram generally showing that the first connecting object P1 and the second connecting object P2 have been inserted into the floating card-edge connector 10. Each of the first connecting object P1 and the second connecting object P2 is formed with a plurality of conductive gaskets at the edges of the insertion ends on the upper surface and the lower surface, that is, the so-called gold fingers. When the first connecting object P1 and the second connecting object P2 are inserted into the floating card-edge connector 10, the conductive gaskets formed on the first connecting object P1 will contact one end of the contacts 14 of the floating card-edge connector 10, and the conductive gaskets formed on the second connecting object P2 will contact the other end of the contacts 14 of the floating card-edge connector 10. Thus, the first connecting object P1 and the second connecting object P2 are electrically connected to each other.

[0082] Figure 4It is an exploded perspective view of a floating card edge connector 10 according to an embodiment of the present utility model. A plurality of contact members 14 are held by a first floating housing 12 and a second floating housing 13, and are arranged in two columns at a predetermined interval from each other in a second direction D2 (i.e., the width direction) perpendicular to the first direction D1. The two columns of contact members 14 are separated in a third direction D3 (i.e., the height direction) perpendicular to the first direction D1 and the second direction D2, and the upper row of contact members 14 and the lower row of contact members 14 are aligned with each other and face each other in the third direction D3. The main housing 11 is configured as a frame-shaped housing including an internal space, and the first floating housing 12, the second floating housing 13, and the contact members 14 are accommodated in this internal space. The first floating housing 12 and the second floating housing 13 are supported in this internal space in a manner that can float on a plane orthogonal to the first direction D1 through the contact members 14.

[0083] According to an embodiment of the present utility model, the first floating housing 12 and the second floating housing 13 have the same structure, shape, and dimensions, and the two housing halves 110 also have the same structure, shape, and dimensions. Therefore, the types of parts required for assembling the floating card edge connector according to the embodiment of the present utility model can be reduced. This is very advantageous for aspects such as the manufacturing and assembly costs of the connector or the management of part inventories.

[0084] Figure 5 It is a front view of the first floating housing 12 of the floating card edge connector 10 according to an embodiment of the present utility model. Figure 6 It is a cross-sectional view of the first floating housing 12 of the floating card edge connector according to an embodiment of the present utility model along line AA. Since the structure, shape, and dimensions of the second floating housing 13 are the same as those of the first floating housing 12, the detailed description of the second floating housing 13 is omitted. The first floating housing 12 and the second floating housing 13 are interchangeable with each other.

[0085] As Figure 5As shown, a first fitting opening 120 for inserting a first connection object P1 is formed on the front side of the first floating housing 12. Chamfers are formed on the upper and lower edges of the opening of the first fitting opening 120 to guide the insertion of the first connection object P1. Two abutting structures 121 that face each other in the second direction D2 are respectively provided on the two inner side walls of the first fitting opening 120. The abutting structure 121 has an abutting protrusion 1211. The first connection object P1 is allowed to be inserted into the first fitting opening 120 in an interference fit manner through the abutting structure 121. In this way, loosening of the first connection object P1 or lateral displacement in the second direction D2 can be avoided. In order to weaken the rigidity of the abutting structure 121, grooves 122 are particularly formed on both sides of the abutting structure 121 in the third direction D3 (that is, the upper side and the lower side of the abutting structure 121). The groove 122 serves as a means for adjusting the rigidity or flexibility of the abutting structure 121. By forming the groove 122, the flexibility of the abutting structure 121 is improved, enabling the abutting structure 121 to more easily deform in accordance with the insertion of the first connection object P1 without hindering the insertion of the first connection object P1.

[0086] A plurality of slots 123 are formed on the upper inner wall surface of the first fitting opening 120 for accommodating the contact portions of the upper row of contacts, such that a part of the contact portions is exposed from the slots 123 to contact the conductive gasket on the upper surface of the first connection object P1 inserted into the first fitting opening 120. A plurality of slots 124 are formed on the lower inner wall surface of the first fitting opening 120 for accommodating the contact portions of the lower row of contacts, such that a part of the contact portions is exposed from the slots 124 to contact the conductive gasket on the lower surface of the first connection object P1. The slots 123 and the slots 124 have the functions of defining the spacing of the contacts and guiding the contact portions of the contacts.

[0087] Two limiting square keys 125 are respectively formed on both side surfaces of the first floating housing 12. The limiting square keys 125 can cooperate with the limiting key grooves (to be described below) formed on the main housing 11, allowing the limiting square keys 125 to move in the second direction D2 and the third direction D3 in the limiting key grooves, but not to move in the first direction D1. The longitudinal rocking (i.e., the swing around the second direction D2) of the first floating housing 12 can also be prevented through the cooperation between the limiting square keys 125 and the limiting key grooves.

[0088] In Figure 6 the outline of the first connection object P1 is schematically shown in dashed lines. As Figure 6As shown, the distance W1 between the two fastening structures 121 (more specifically, the distance between the fastening protrusions 1211 of the two fastening structures 121) is set to be smaller than the width W2 of the insertion end of the first connection object P1. Therefore, the first connection object P1 can be inserted into the first fitting opening 120 of the first floating housing 12 in an interference fit manner. Similarly, the second connection object P2 can be inserted into the second fitting opening (not shown) of the second floating housing 13 in an interference fit manner.

[0089] Figure 7 A perspective view showing an assembly composed of the first floating housing 12, the second floating housing 13, and the contact member 14, wherein one side of the contact member 14 is fixed to the first floating housing 12 and held by the first floating housing 12, and the other side of the contact member 14 is fixed to the second floating housing 13 and held by the second floating housing 13. Figure 7 The assembly shown is housed in the internal space of the main housing 11, and through Figure 7 the portions of the contact member 14 exposed from the first floating housing 12 and the second floating housing 13 (i.e., the first spring portion, the second spring portion, and the connecting portion described later), the first floating housing 12 and the second floating housing 13 are supported in a floating manner within the main housing 11.

[0090] Figure 8 is a perspective view of the main housing 11 of the floating card-edge connector 10 according to an embodiment of the present invention.

[0091] Figure 9 is an exploded perspective view of the main housing 11 of the floating card-edge connector 10 according to an embodiment of the present invention.

[0092] Figure 10 is a front view of the main housing 11 of the floating card-edge connector 10 according to an embodiment of the present invention. Refer to Figures 8 to 10 Briefly describe the structure of the main housing 11.

[0093] The main housing 11 is composed of two housing halves 110. The main housing 11 is formed as a frame-shaped housing with an octagonal outer contour when viewed from the first direction D1, which defines an internal space SP. The internal space SP penetrates both ends of the main housing 11 in the first direction D1. Figure 7 The assembly shown and composed of the first floating housing 12, the second floating housing 13, and the contact member 14 is housed in the internal space SP of the main housing 11. The main housing 11 is formed with a plurality of limiting grooves 111 on the upper inner wall and the lower inner wall for housing the connecting portion (to be described below) of the contact member 14. The movement of the connecting portion of the contact member 14 in the second direction D2 is restricted by the limiting grooves 111. The main housing 11 is formed with limiting square keys 125 and limiting square keys 135 (shown in Figure 12)The engaged limiting keyway 113. The floating ranges of the first floating housing 12 and the second floating housing 13 can be set by using the gaps between the limiting keyway 113, the limiting square key 125 and the limiting square key 135. The movable ranges of the first floating housing 12 and the second floating housing 13 can also be defined by the size of the internal space SP of the main housing 11. The size of the limiting keyway 113 can be set such that its width in the first direction D1 is slightly larger than the sum of the widths of the limiting square key 125 of the first floating housing 12 and the limiting square key 135 of the second floating housing 13 in the first direction D1, so that the first floating housing 12 and the second floating housing 13 are substantially immovable in the first direction D1.

[0094] For example, in this embodiment, the movable distances of the first floating housing 12 and the second floating housing 13 in the second direction D2 can be set to ±0.15 mm, and the movable distances in the third direction D3 can be set to ±0.15 mm. It should be understood that the above-mentioned movable distances are only exemplary, and the movable distances of the first floating housing and the second floating housing can be changed according to requirements. The floating edge connector of the present invention is not limited to the specific ranges of the examples.

[0095] As Figure 9 shown, each of the two housing halves 110 forming the main housing 11 is formed with two locking portions 112 and two engaging protrusions 114. When the two housing halves 110 are assembled together, the locking portion 112 of one housing half 110 engages with the engaging protrusion 114 of the other housing half 110, thereby preventing the assembled two housing halves 110 from separating from each other. As Figure 10 shown, the main housing 11 includes an upper surface 11a and a lower surface 11b that are orthogonal to the third direction D3 and opposite to each other, a first side surface 11c and a second side surface 11d that are orthogonal to the second direction D2 and opposite to each other, a first inclined surface 11e connecting the upper surface 11a and the first side surface 11c, a second inclined surface 11f connecting the upper surface 11a and the second side surface 11d, a third inclined surface 11g connecting the lower surface 11b and the first side surface 11c, and a fourth inclined surface 11h connecting the lower surface 11b and the second side surface 11d. When viewing the floating edge connector 10 from the first direction D1, the outer contour of the main housing 11 is octagonal.

[0096] As can be seen in Figure 10, two locking portions 112 are respectively formed on the first inclined surface 11e and the fourth inclined surface 11h, and two engaging protrusions 114 are respectively formed on the second inclined surface 11f and the third inclined surface 11g. The present utility model is not limited thereto. The two locking portions 112 may also be respectively formed on the second inclined surface 11f and the third inclined surface 11g, and the two engaging protrusions 114 are respectively formed on the first inclined surface 11e and the fourth inclined surface 11h. Since on the one hand, the corner space of the connector is reduced and on the other hand, this corner space is fully utilized to form a snap structure, such a configuration is conducive to the miniaturization of the floating edge connector 10.

[0097] Figure 11 is a cross-sectional view of the floating edge connector 10 of the embodiment of the present utility model along line BB. As Figure 11 shown, the contact member 14 includes a first contact portion 141, a first holding portion 143, a first spring portion 145, a connecting portion 147, a second spring portion 146, a second holding portion 144, and a second contact portion 142. In order to make the first floating housing 12 and the second floating housing 13 approach each other, thereby reducing the size of the floating edge connector in the first direction D1, the contact member 14 is configured such that the first contact portion 141, the first holding portion 143, and the first spring portion 145 are substantially arranged along the third direction D3, and the second contact portion 142, the second holding portion 144, and the second spring portion 146 are substantially arranged along the third direction D3.

[0098] The first holding portion 143 extends from the first contact portion 141 and is formed with an engaging tab 1431 extending in the first direction D1. By inserting the engaging tab 1431 into the engaging hole formed in the first floating housing 12 in a tight-fitting manner, the first holding portion 143 is fixed to the first floating housing 12. The first spring portion 145 extends from the first holding portion 143 and is connected to the second spring portion 146 through the connecting portion 147. The second holding portion 144 extends from the second contact portion 142 and is formed with an engaging tab 1441 extending in the first direction D1. By inserting the engaging tab 1441 into the engaging hole formed in the second floating housing 13 in a tight-fitting manner, the second holding portion 144 is fixed to the second floating housing 13.

[0099] The first contact portion 141 and the second contact portion 142 have a substantially L-shaped or substantially V-shaped configuration. The first spring portion 145 and the second spring portion 146 have a substantially U-shaped configuration, but are not limited thereto. The first spring portion 145 and the second spring portion 146 may also be made into an arc shape or a meandering shape.

[0100] Figure 12 is a cross-sectional view of the floating edge connector 10 of the embodiment of the present utility model taken along line CC. Figure 12 shown, the limiting square key 135 of the second floating housing 13 extends into the limiting key groove 113. As Figure 12As shown, there is a certain gap between the limiting square key 135 and the limiting key groove 113 in the second direction D2 or the third direction D3, allowing the second floating housing 13 to move in the second direction D2 and the third direction D3. As Figure 11 and Figure 12 shown, the housing 2 is formed with a limiting groove 111 for receiving the connecting portion 147 of the contact member 14 on the upper inner wall and the lower inner wall. The movement of the connecting portion 147 of the contact member 14 in the second direction D2 is restricted by the limiting groove 111.

[0101] Although the present utility model is described and demonstrated with reference to the preferred embodiments, it should be understood that there may still be many variations and modifications for those with ordinary technical knowledge in the technical field to which the present utility model pertains without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited to the described embodiments, but is based on the literal description of the claims. That is, the equivalent variations and modifications that do not deviate from the claims of the present utility model should still fall within the scope of the present utility model.

Claims

1. A floating card edge connector, characterized in that: The floating card edge connector is used to insert a first connection object and a second connection object into the floating card edge connector along a first direction, thereby electrically connecting the first connection object and the second connection object to each other, and the floating card edge connector includes: Main shell; The first floating housing includes a first fitting opening for inserting the first connection object; A second floating housing comprises a second fitting opening for inserting the second connection object, the first floating housing and the second floating housing are configured to be independently movable relative to the main housing and the opening directions of the first fitting opening and the second fitting opening are opposite to each other; a plurality of contact members, the plurality of contact members are arranged along a second direction perpendicular to the first direction, each of the plurality of contact members comprises a first contact portion, a first holding portion, a first spring portion, a connecting portion, a second spring portion, a second holding portion and a second contact portion, the first contact portion, the first holding portion and the first spring portion are arranged along a third direction perpendicular to the first direction and the second direction, the second contact portion, the second holding portion and the second spring portion are arranged along the third direction, the first contact portion is positioned at the first fitting opening and is provided for contacting the first connection object, the first holding portion is continued from the first contact portion and is held by the first floating housing, the first spring portion is continued from the first holding portion and is connected to the second spring portion through the connecting portion, the second contact portion is positioned at the second fitting opening and is provided for contacting the second connection object, the second holding portion is continued from the second contact portion and is held by the second floating housing, and the second spring portion is continued from the second holding portion; Each of the first fitting opening and the second fitting opening has two abutment structures opposite to each other in the second direction on two inner side walls, allowing the first connection object and the second connection object to be inserted into the first fitting opening and the second fitting opening respectively in an interference fit manner.

2. The floating card edge connector according to claim 1, wherein: The distance between the two abutting structures is smaller than the width of the insertion end of the first connection object or the second connection object.

3. The floating card edge connector according to claim 1, wherein: Grooves are formed on both sides of each abutting structure in the third direction to weaken the rigidity of the two abutting structures.

4. The floating card edge connector according to any one of claims 1 to 3, wherein: The main shell includes an upper surface and a lower surface that are orthogonal to the third direction and opposite to each other, a first side surface and a second side surface that are orthogonal to the second direction and opposite to each other, a first slope connecting the upper surface and the first side surface, a second slope connecting the upper surface and the second side surface, a third slope connecting the lower surface and the first side surface, and a fourth slope connecting the lower surface and the second side surface, so that when the floating card edge connector is viewed from the first direction, the outer contour of the main shell is an octagon.

5. The floating card edge connector according to claim 4, wherein: The main housing is composed of two housing halves, each housing half being formed with two locking portions and two engaging protrusions.

6. The floating card edge connector according to claim 5, wherein: The two locking portions are formed on the first inclined surface and the fourth inclined surface respectively, and the two engaging protrusions are formed on the first inclined surface and the fourth inclined surface respectively.

7. The floating card edge connector according to claim 6, wherein: The locking portion and the engaging protrusion of one of the two housing halves are engaged with the engaging protrusion and the locking portion of the other of the two housing halves, respectively.

8. The floating card edge connector according to any one of claims 1 to 3, characterized in that: The main shell includes an internal space, and the first floating shell, the second floating shell and the multiple contacts are accommodated in the internal space. The first floating shell and the second floating shell are supported in the internal space in a floating manner through the multiple contacts, wherein the upper inner wall and the lower inner wall of the main shell are formed with multiple limiting grooves for accommodating the connecting parts of the multiple contacts, and the multiple limiting grooves are used to limit the movement of the connecting parts of the multiple contacts in the second direction.

9. The floating card edge connector according to any one of claims 1 to 3, wherein: The main housing is configured to allow the first floating housing and the second floating housing to move in a plane orthogonal to the first direction.

10. The floating card edge connector according to any one of claims 1 to 3, characterized in that: The first floating housing and the second floating housing can move independently of each other.

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