Connector fixing structure and mainboard

Abstract

This utility model relates to the field of connector shockproof technology, and more particularly to a connector fixing structure and a mainboard. The structure includes a slot assembly, a push rod assembly, and a locking assembly. The slot assembly includes a groove for connecting the connector. The push rod assembly includes a push rod body, which includes a rotating end and a snap-fit ​​end. The rotating end is rotatably connected to the groove, and the snap-fit ​​end is used to snap-fit ​​the connector inserted into the groove. The locking assembly includes a pin structure that passes through the push rod body and the groove to keep them in a locked state. This utility model, by adding a pin structure, improves the stability of the connection between the push rod body and the groove, effectively preventing connector detachment. Furthermore, the pin structure differs from existing fixing methods, offering better compatibility; and the fixing operation of the pin structure is simple and quick.

Description

Technical Field

[0001] This utility model relates to the field of connector shockproof technology, and in particular to a connector fixing structure and a motherboard. Background Technology

[0002] The memory module is secured to the dual-in-line-memory (DIMM) slot on the motherboard using a latching mechanism. There are latching mechanisms on both sides of the DIMM slot; when the memory module is inserted, these mechanisms engage securely, ensuring a firm connection. During vibration testing or product transportation, motherboard deformation or the added weight of the memory module (due to armor plating) may cause the latching mechanisms to loosen, resulting in the memory module falling off.

[0003] To address the aforementioned technical issues, a securing strap can be added to further secure the installed memory module. The securing strap employs a three-point fixing design, which can easily, quickly, and effectively fix the memory module to the slot.

[0004] However, the addition of a fixing strap affects the appearance and has poor compatibility with different memory modules, making it difficult to be compatible with memory modules with different shapes and armor plates; and when installing multiple memory modules, the small distance between them makes disassembly and assembly difficult. Utility Model Content

[0005] To address at least the above-mentioned technical problems existing in the prior art, this utility model provides a connector fixing structure and a motherboard.

[0006] This utility model provides a connector fixing structure, including a slot assembly, a push rod assembly, and a locking assembly. The slot assembly includes a groove for connecting a connector. The push rod assembly includes a push rod body, which includes a rotating end and a snap-fit ​​end. The rotating end is rotatably connected to the groove, and the snap-fit ​​end is used to snap-fit ​​the connector inserted into the groove. The locking assembly includes a pin structure that passes through the push rod body and the groove to keep the push rod body and the groove in a locked state.

[0007] In some embodiments, the side end of the groove includes a recess, the push rod body includes a through hole, and when the snap-fit ​​end is snapped into the connector, the through hole and the recess are in communication; the pin structure includes a shaft and an end cap, the end cap is located at one end of the shaft, the shaft is used to pass through the through hole and the recess, and the shaft is at least tightly fitted to the recess, and the end cap is fitted to the side of the push rod body away from the connector locking.

[0008] In some embodiments, the outer wall of the shaft is interference-fitted with the inner wall of the groove so that the shaft and the groove are tightly connected.

[0009] In some embodiments, the outer wall of the shaft is provided with a snap-fit ​​protrusion, which abuts against the inner wall of the groove so that the shaft and the groove are tightly connected.

[0010] In some embodiments, the snap-fit ​​protrusion is connected to a telescopic device, and the snap-fit ​​protrusion is driven by the telescopic device to switch between a retracted position and an extended position; when the snap-fit ​​protrusion is in the retracted position, the shaft is used to move within the through hole and the groove; when the snap-fit ​​protrusion is in the extended position, the snap-fit ​​protrusion abuts against the inner wall of the groove.

[0011] In some embodiments, the telescopic device includes a telescopic rod, the shaft includes a hollow hole arranged axially, and the telescopic rod passes through the hollow hole; the telescopic rod is provided with two circumferentially arranged annular grooves, the two annular grooves are spaced apart along the axial direction of the telescopic rod, and the outer wall of the telescopic rod between the two annular grooves is an abutment platform; the locking protrusion includes a spherical ball, the outer wall of the shaft is provided with a protruding hole communicating with the hollow hole, when the locking protrusion is in the contracted position, the spherical ball is located in the annular groove, and when the locking protrusion is in the extended position, the spherical ball is located on the abutment platform and partially protrudes from the protruding hole.

[0012] In some embodiments, the end of the telescopic rod further includes a pressing end, the outer diameter of which is larger than the outer diameter of the telescopic rod and the through hole.

[0013] In some embodiments, the end cap further includes a receiving cavity, the receiving cavity having an opening at one end away from the shaft, the pressing end being partially located inside the receiving cavity and partially extending out through the opening to be outside the receiving cavity; the receiving cavity is provided with an elastic reset device, the elastic reset device abutting against the pressing end, and when the elastic reset device is in the reset state, the snap-fit ​​protrusion is located in the extended position.

[0014] In some embodiments, the elastic reset device includes a first spring and a second spring, and a radially extending abutment plate is provided on the side of the pressing end connected to the telescopic rod; the first spring is sleeved on the pressing end, and one end of the first spring abuts against the abutment plate and the other end abuts against the inner wall of the receiving cavity; the second spring is sleeved on the telescopic rod, and one end of the second spring abuts against the abutment plate and the other end abuts against the inner wall of the receiving cavity.

[0015] In another aspect, this utility model also provides a motherboard, including the aforementioned connector fixing structure.

[0016] This utility model provides a connector fixing structure and a main board. In use, the connector's gold fingers are inserted into the slot, and the push rod body is rotated to engage the snap-fit ​​end of the push rod body with the connector end. Then, a pin structure is further inserted into the push rod body and the slot to further secure the slot assembly and the push rod assembly. This utility model's technical solution, by adding a pin structure, improves the stability of the connection between the push rod body and the slot, effectively preventing connector detachment. Furthermore, the pin structure differs from existing fixing methods, offering better compatibility; and the fixing operation of the pin structure is simple and quick. Attached Figure Description

[0017] The above and other objects, features, and advantages of the present invention will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated in the drawings by way of example and not limitation, in which:

[0018] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0019] Figure 1 This is a schematic diagram of the connector fixing structure provided in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the slot assembly in the connector fixing structure provided in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the push rod assembly in the connector fixing structure provided in this embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the locking component in the connector fixing structure provided in this embodiment of the utility model;

[0023] Figure 5 A cross-sectional view of the locking component in the connector fixing structure provided in an embodiment of this utility model;

[0024] Figure 6 A cross-sectional view of the connector fixing structure provided in this embodiment of the present invention when the locking component is in the retracted position (insertion of the locking component);

[0025] Figure 7 A cross-sectional view of the locking component in the connector fixing structure provided in this embodiment of the present invention when it is in the extended position;

[0026] Figure 8 A cross-sectional view of the connector fixing structure provided in this embodiment of the present invention when the locking component is in the retracted position (locking component pulled out).

[0027] In the picture:

[0028] 10: Slot assembly; 20: Push rod assembly; 30: Locking assembly; 40: Connector;

[0029] 11: Trough; 12: Groove;

[0030] 21: Push rod body; 211: Rotating end; 212: Snap-fit ​​end; 22: Through hole;

[0031] 31: Pin structure; 32: Shaft body; 321: Hollow hole; 322: Protruding hole; 33: End cap; 331: Receiving cavity; 332: Opening; 34: Snap-fit ​​protrusion; 341: Spherical ball; 35: Telescopic device; 351: Telescopic rod; 352: Annular groove; 353: Abutment platform; 354: Pressing end; 36: Elastic reset device; 361: First spring; 362: Second spring; 37: Abutment plate; 38: Housing. Detailed Implementation

[0032] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] This utility model provides a connector fixing structure, including a slot assembly, a push rod assembly, and a locking assembly. The slot assembly is inserted into the gold fingers of the connector, the push rod assembly is used to fix the connector after insertion, and the locking assembly further fixes the slot assembly and the push rod assembly, thereby achieving the stability of the connection between the slot assembly, the push rod assembly, and the connector and improving the fixing effect of the connector.

[0034] The specific structure of each component, the positional relationship of each component, and the connection relationship of each component are described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 3 As shown, the slot assembly 10 includes a slot 11 for connecting the connector 40; the slot 11 is disposed on the circuit board, and a metal contact strip is disposed inside the slot 11, which communicates with the circuit board. After the gold fingers are inserted into the slot 11, the gold fingers are connected to the metal contact strip. The push rod assembly 20 includes a push rod body 21, which includes a rotating end 211 and a snap-fit ​​end 212. The rotating end 211 is rotatably connected to the slot 11, and the snap-fit ​​end 212 is used to snap-fit ​​the connector 40 inserted into the slot 11.

[0036] For example, one end of the push rod body 21 is a rotating end 211, which includes two protruding rotating shafts. A shaft groove is provided at the end of the groove 11, and the rotating shaft is inserted into the shaft groove. The push rod body 21 is rotatably connected to the groove 11 through the rotating shaft and the shaft groove. When the push rod body 21 rotates to the set position, the snap-fit ​​end 212 snaps into the groove 11. For example, the set position is when the push rod body 21 is in contact with the side end of the groove 11.

[0037] For example, the snap-fit ​​end 212 includes an insert plate, and a slot is provided on the side end of the groove 11. When the push rod body 21 rotates to a set position, the insert plate is inserted into the slot, thereby realizing the connection between the snap-fit ​​end 212 and the groove 11. A snap-fit ​​position is also provided on the connector 40, and the snap-fit ​​end 212 snaps into the snap-fit ​​position, thereby fixing the connector 40 to the groove 11. In this embodiment of the present invention, the snap-fit ​​method between the snap-fit ​​end 212 and the snap-fit ​​position is not limited, such as the snap-fit ​​method between a protrusion and the groove 11, etc.

[0038] like Figure 1 , Figure 3 and Figure 4 As shown in the embodiment of this utility model, the connector fixing structure further includes a locking component 30, which further locks the slot assembly 10 and the push rod assembly 20 on the basis of their connection, thereby achieving a more stable connection. In this embodiment of the invention, the locking component 30 includes a pin structure 31, which is used to pass through the push rod body 21 and the slot 11 to keep the push rod body 21 and the slot 11 in a locked state.

[0039] Continue to refer to Figures 2 to 5 As shown in the embodiment of the present invention, the side end of the groove 11 includes a groove 12, and the push rod body 21 includes a through hole 22. When the push rod body 21 is attached to the side end of the groove 11, the snap-fit ​​end 212 snaps into the connector 40. The through hole 22 and the groove 12 are connected. A pin structure 31 is inserted into the through channel to further achieve a stable connection between the push rod body 21 and the groove 11.

[0040] For example, the pin structure 31 includes a shaft body 32 and an end cap 33. The end cap 33 is located at one end of the shaft body 32. The shaft body 32 is used to pass through the through hole 22 and the groove 12, and the shaft body 32 is at least tightly connected to the groove 12. The end cap 33 is attached to the side of the push rod body 21 away from the connector 40 for locking.

[0041] The shaft 32 is inserted into the channel formed by the through hole 22 and the groove 12. The end cap 33, the shaft 32, and the groove 12 are tightly fitted to form a clamping structure, so that the push rod body 21 is firmly connected to the groove 11. The outer wall of the shaft 32 needs to be firmly connected to the inner wall of the groove 12. The connection method can be an interference fit connection or a snap-fit ​​connection.

[0042] In this design, the outer diameter of the shaft 32 is made slightly larger than the inner diameter of the channel formed by the through hole 22 and the groove 12. When the shaft 32 is connected by interference fit, the insertion or removal of the shaft 32 can be completed with the help of external force. Alternatively, a snap-fit ​​protrusion 34 is provided on the outer wall of the shaft 32. The snap-fit ​​protrusion 34 abuts against the inner wall of the groove 12 so that the shaft 32 and the groove 12 are tightly connected. The snap-fit ​​protrusion 34 can be a raised texture or a retractable snap-fit ​​protrusion 34.

[0043] For example, the snap-fit ​​protrusion 34 is connected to the telescopic device 35, and the snap-fit ​​protrusion 34 is driven by the telescopic device 35 to switch between the retracted position and the extended position; when the snap-fit ​​protrusion 34 is in the retracted position, the shaft 32 is used to move within the through hole 22 and the groove 12; when the snap-fit ​​protrusion 34 is in the extended position, the snap-fit ​​protrusion 34 abuts against the inner wall of the groove 12.

[0044] During the insertion or removal of the shaft 32, the locking protrusion 34 is in the retracted position. In this state, the shaft 32 can be easily inserted and removed. When the locking protrusion 34 is in the extended position, the locking protrusion 34 can interfere with the inner wall of the groove 12, thereby achieving a stable connection between the shaft 32 and the groove 12.

[0045] For example, the telescopic device 35 includes a telescopic rod 351, and the shaft 32 includes a hollow hole 321 arranged along the axial direction. The telescopic rod 351 passes through the hollow hole 321. The telescopic rod 351 is provided with two circumferentially arranged annular grooves 352, which are spaced apart along the axial direction of the telescopic rod 351. The outer wall of the telescopic rod 351 between the two annular grooves 352 is an abutment platform 353. The locking protrusion 34 includes a spherical ball 341. The outer wall of the shaft 32 is provided with a protrusion hole 322 communicating with the hollow hole 321. When the locking protrusion 34 is in the retracted position, the spherical ball 341 is located in the annular groove 352. When the locking protrusion 34 is in the extended position, the spherical ball 341 is located on the abutment platform 353 and partially protrudes from the protrusion hole 322.

[0046] like Figures 5 to 8 As shown, when the telescopic rod 351 is inserted into the shaft 32 for operation, as... Figure 6 In the state shown, the spherical ball 341 is located in the annular groove 352 on the side away from the push rod body 21 and the groove 11. When the telescopic rod 351 is inserted into place, the telescopic rod 351 will move in the opposite direction a certain distance, that is, as shown. Figure 7 In the state shown, during reverse movement, the top of the spherical ball 341 first engages with the protruding hole 322. As the telescopic rod 351 continues to move in the reverse direction, the abutment platform 353 abuts against the bottom of the spherical ball 341, keeping the spherical ball 341 protruding from the protruding hole 322, as shown. Figure 8The state shown in the figure enables the spherical ball 341 to fully interfere with and abut against the inner wall of the groove 12.

[0047] When the telescopic rod 351 is pulled out from the shaft 32, force is applied to the telescopic rod 351. As the telescopic rod 351 is pulled out and moves, the spherical ball 341 separates from the abutment platform 353 and falls into the annular groove 352 on the other side. As the telescopic rod 351 is continuously pulled out, the telescopic rod 351 is separated from the shaft 32.

[0048] For example, an inclined chamfer structure is provided at the edge of the groove of the annular groove 352. The chamfer structure has a guiding function, which facilitates the switching of the spherical ball 341 between the abutment platform 353 and the annular groove 352.

[0049] Continue to refer to Figure 5 As shown in the embodiment of this utility model, the end of the telescopic rod 351 further includes a pressing end 354, the outer diameter of which is larger than the outer diameter of the telescopic rod 351 and the through hole 22. During the insertion operation of the telescopic rod 351, external force is applied to the pressing end 354 to achieve the insertion operation of the telescopic rod 351.

[0050] After the telescopic rod 351 is inserted into place, it needs to move in the opposite direction for a certain distance. This reverse movement is achieved by the elastic reset device 36. For example, the end cap 33 also includes a receiving cavity 331. The receiving cavity 331 has an opening 332 at one end away from the shaft 32. The pressing end 354 is partially located inside the receiving cavity 331 and partially protrudes through the opening 332 outside the receiving cavity 331. The receiving cavity 331 is provided with an elastic reset device 36, which abuts against the pressing end 354. When the elastic reset device 36 is in the reset state, the locking protrusion 34 is in the extended position, that is, the spherical ball 341 is pushed out of the protrusion hole 322 by the abutment platform 353.

[0051] For example, the elastic reset device 36 includes a first spring 361 and a second spring 362. A radially extending abutment plate 37 is provided on the side of the pressing end 354 connected to the telescopic rod 351. The first spring 361 is sleeved on the pressing end 354, and one end of the first spring 361 abuts against the abutment plate 37, while the other end abuts against the inner wall of the receiving cavity 331. The second spring 362 is sleeved on the telescopic rod 351, and one end of the second spring 362 abuts against the abutment plate 37, while the other end abuts against the inner wall of the receiving cavity 331.

[0052] During the insertion of the telescopic rod 351, pressing the pressing end 354 overcomes the elastic force of the second spring 362, compressing it until the telescopic rod 351 is fully inserted. Full insertion can be understood as the ball bearing 341 engaging or passing over the protruding hole 322. Then, the force on the pressing end 354 is released, the second spring 362 resets, and the pressing end 354 moves in the opposite direction. Under the force of the first spring 361 and the second spring 362, the pressing end 354 resets and moves to the set position, keeping the ball bearing 341 protruding from the protruding hole 322. During the withdrawal of the telescopic rod 351, a pulling force is applied to the pressing end 354, overcoming the elastic force of the first spring 361, compressing it. The ball bearing 341 falls into the annular groove 352 on the other side of the abutment platform 353, allowing the telescopic rod 351 to be easily withdrawn.

[0053] For example, a housing 38 structure is wrapped around the end cap 33. A plate moving position is provided on the housing 38. By applying a force to the plate moving position, a pull-out force can be applied to the shaft 32 simultaneously.

[0054] This utility model embodiment provides a motherboard including the aforementioned connector fixing structure. The connector 40 is fixed using the connector fixing structure. Taking a memory connector as an example, the memory connector 40 is inserted into the slot 11. The snap-fit ​​end 212 of the push rod body 21 snaps into the memory module connector 40. Then, the shaft 32 is inserted into the through hole 22, and pressure is applied to the pressing end 354 to achieve interference contact between the spherical ball 341 and the inner wall of the groove 12, further limiting the position of the memory connector 40. When disassembling the memory connector 40, the operation is reversed: first, the shaft 32 is pulled out, and then the push rod body 21 is separated from the slot 11, thereby releasing the fixation of the memory connector 40.

[0055] This utility model provides a connector fixing structure and a main board. In use, the gold fingers of the connector 40 are inserted into the slot 11, and the push rod body 21 is rotated to engage the snap-fit ​​end 212 of the push rod body 21 with the end of the connector 40. Then, a pin structure 31 is further inserted through the push rod body 21 and the slot 11 to further fix the slot assembly 10 and the push rod assembly 20. This utility model's technical solution, by adding the pin structure 31, improves the stability of the connection between the push rod body 21 and the slot 11, effectively preventing the connector 40 from falling off. Furthermore, the pin structure 31 differs from existing fixing methods, offering better compatibility; and the fixing operation of the pin structure 31 is simple and quick.

[0056] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0057] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A connector fixing structure characterized by comprising: It includes a slot assembly (10), a push rod assembly (20), and a locking assembly (30); The slot assembly (10) includes a slot (11) for connecting a connector (40); The push rod assembly (20) includes a push rod body (21), the push rod body (21) includes a rotating end (211) and a snap-fit ​​end (212), the rotating end (211) is rotatably connected to the groove (11), and the snap-fit ​​end (212) is used to snap-fit ​​with the connector (40) inserted into the groove (11); The locking assembly (30) includes a pin structure (31) for passing through the push rod body (21) and the groove (11) to keep the push rod body (21) and the groove (11) in a locked state.

2. The connector fixing structure according to claim 1, characterized by The side end of the groove (11) includes a groove (12), the push rod body (21) includes a through hole (22), and when the snap-fit ​​end (212) is snapped into the connector (40), the through hole (22) and the groove (12) are connected. The pin structure (31) includes a shaft body (32) and an end cap (33). The end cap (33) is located at one end of the shaft body (32). The shaft body (32) is used to pass through the through hole (22) and the groove (12). The shaft body (32) is at least tightly connected to the groove (12). The end cap (33) is attached to the side of the push rod body (21) away from the connector (40) for locking.

3. The connector fixing structure according to claim 2, characterized by The outer wall of the shaft (32) is press-fitted with the inner wall of the groove (12) so that the shaft (32) and the groove (12) are tightly connected.

4. The connector fixing structure according to claim 2, characterized by The outer wall of the shaft (32) is provided with a snap-fit ​​protrusion (34), which abuts against the inner wall of the groove (12) so that the shaft (32) and the groove (12) are tightly connected.

5. The connector fixing structure according to claim 4, characterized in that, The snap-fit ​​protrusion (34) is connected to the telescopic device (35), and the snap-fit ​​protrusion (34) is driven by the telescopic device (35) to switch between the retracted position and the extended position; When the snap-fit ​​protrusion (34) is in the contracted position, the shaft (32) is used to move within the through hole (22) and the groove (12). When the snap-fit ​​protrusion (34) is in the extended position, the snap-fit ​​protrusion (34) abuts against the inner wall of the groove (12).

6. The connector fixing structure according to claim 5, characterized by The telescopic device (35) includes a telescopic rod (351), and the shaft (32) includes a hollow hole (321) arranged along the axial direction, and the telescopic rod (351) passes through the hollow hole (321); The telescopic rod (351) is provided with two circumferentially arranged annular grooves (352), the two annular grooves (352) are spaced apart along the axial direction of the telescopic rod (351), and the outer wall of the telescopic rod (351) between the two annular grooves (352) is an abutment platform (353). The snap-fit ​​protrusion (34) includes a spherical ball (341). The outer wall of the shaft (32) is provided with a protruding hole (322) communicating with the hollow hole (321). When the snap-fit ​​protrusion (34) is in the contracted position, the spherical ball (341) is located in the annular groove (352). When the snap-fit ​​protrusion (34) is in the extended position, the spherical ball (341) is located on the abutment platform (353) and partially protrudes from the protruding hole (322).

7. The connector fixing structure according to claim 6, characterized by The end of the telescopic rod (351) also includes a pressing end (354), the outer diameter of which is larger than the outer diameter of the telescopic rod (351) and the through hole (22).

8. The connector fixing structure according to claim 7, characterized by The end cap (33) also includes a receiving cavity (331), and the receiving cavity (331) has an opening (332) at one end away from the shaft (32). The pressing end (354) is partially located inside the receiving cavity (331) and partially protrudes through the opening (332) outside the receiving cavity (331). The cavity (331) is provided with an elastic reset device (36), which abuts against the pressing end (354). When the elastic reset device (36) is in the reset state, the snap-fit ​​protrusion (34) is located in the extended position.

9. The connector fixing structure according to claim 8, characterized by The elastic reset device (36) includes a first spring (361) and a second spring (362), and the pressing end (354) is provided with a radially extending abutment plate (37) on the side connected to the telescopic rod (351); The first spring (361) is sleeved on the pressing end (354), and one end of the first spring (361) abuts against the abutting plate (37), and the other end abuts against the inner wall of the receiving cavity (331). The second spring (362) is sleeved on the telescopic rod (351), and one end of the second spring (362) abuts against the abutting plate (37), and the other end abuts against the inner wall of the receiving cavity (331).

10. A main board characterized by comprising: Includes the connector fixing structure as described in any one of claims 1 to 9.

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