Protective cover and vehicle

Abstract

The utility model provides a protective cover and a vehicle, the protective cover comprises a front end and a rear end, the protective cover at least comprises a first corrugated pipe and a second corrugated pipe which are connected in sequence from the front end to the rear end, and the front end is connected with the first corrugated pipe; the first transition section is connected with the first corrugated pipe and the second corrugated pipe; when the protective cover is in a limit compression state, at least part of the first transition section abuts against the front end.

Description

Technical Field

[0001] This application relates to the technical field of automobile design and manufacturing, and in particular to a protective cover and vehicle. Background Technology

[0002] In vehicle steering systems, protective covers are commonly used to seal and protect the movement of the steering gear's rack and tie rods. For example, their flexibility ensures that the steering gear remains in a sealed state at any travel position, thereby preventing problems such as water immersion and corrosion, grease loss, air oxidation, and the entry of impurities.

[0003] The existing protective cover structure consists of a uniform section and a tapering section from front to rear, which cannot match the increasing travel trend of current vehicle steering systems. Therefore, the protective cover needs to be redesigned to accommodate the longer travel of steering systems. Utility Model Content

[0004] This application provides a protective cover and a vehicle for increasing the tensile length of the protective cover.

[0005] The first aspect of this application provides a protective shield, comprising:

[0006] The front end and the back end, wherein the front end to the back end includes at least a first corrugated pipe and a second corrugated pipe connected in sequence, and the front end is connected to the first corrugated pipe;

[0007] A first transition section connects the first corrugated pipe and the second corrugated pipe;

[0008] When the protective cover is under extreme compression, at least a portion of the first transition section abuts against the front end.

[0009] In some embodiments, the front end is connected to the first bellows, including:

[0010] A second transition section connects the front end and the first bellows.

[0011] When the protective cover is under extreme compression, at least a portion of the first transition section abuts against at least a portion of the second transition section.

[0012] In some embodiments, the first bellows includes a descending corrugation portion and a rising corrugation portion, and at least two peaks and at least one trough formed by the descending corrugation portion and the rising corrugation portion; then the first transition section connects the first bellows and the second bellows, including:

[0013] The first transition section connects the end point of the first end of the first corrugated pipe and the second corrugated pipe, wherein the first end is the rising part of the corrugation, and the inner diameter of the lowest trough of the first corrugated pipe is greater than the inner diameter of the front end.

[0014] In some embodiments, the length of the first transition section is greater than the first spacing, wherein the first spacing is the lateral spacing between the lowest trough of the first bellows and the end point of the rising corrugation at the first end.

[0015] In some embodiments, the lowest trough of the first bellows includes at least one trough of the first bellows.

[0016] In some embodiments, the first bellows includes a descending corrugation portion and a rising corrugation portion, and, based on at least two peaks and at least one trough formed by the descending and rising corrugations, the second transition section connects the front end and the first bellows, including:

[0017] The second transition section connects the starting point of the first beginning end of the first corrugated pipe and the front end, wherein the first beginning end is the lower corrugated part, and the inner diameter of the lowest trough of the first corrugated pipe is greater than the inner diameter of the front end.

[0018] In some embodiments, the length of the second transition section is greater than the second spacing, wherein the second spacing is the lateral spacing between the lowest trough of the first bellows and the starting point of the corrugated descending portion at the first beginning.

[0019] In some implementations, the length of the second transition segment is greater than the length of the first transition segment.

[0020] In some embodiments, the lowest trough of the first bellows includes at least one trough of the first bellows.

[0021] In some embodiments, the first corrugated pipe is a uniform corrugated pipe, or the first corrugated pipe and the second corrugated pipe are uniform corrugated pipes.

[0022] In some embodiments, the protective cover further includes a third corrugated pipe that connects the second corrugated pipe and the rear end, wherein the third corrugated pipe is a shrinking corrugated pipe, and the first and second corrugated pipes are uniform corrugated pipes.

[0023] A second aspect of this application provides a steering gear equipped with a protective cover according to the foregoing embodiments.

[0024] A third aspect of this application provides a vehicle including the protective shield of the first aspect and / or the steering system of the second aspect.

[0025] Compared to the prior art, the protective cover of this application includes at least a first corrugated pipe and a second corrugated pipe connected in sequence from the front end to the rear end. The front end is connected to the first corrugated pipe, and the first corrugated pipe is connected to the second corrugated pipe through a first transition section. Since at least part of the first transition section abuts the front end when the protective cover is in a state of extreme compression, the first corrugated pipe, which can be stored in the storage space divided by the front end and is located between the front end and the second corrugated pipe, provides an additional stretch length in its stretched state, thereby increasing the stretch length of the protective cover and thus increasing the stretching stroke of the protective cover. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0027] Figure 1 This is a three-dimensional schematic diagram of a two-section protective cover in the prior art;

[0028] Figure 2 yes Figure 1 A side view of the two-section protective cover under extreme tensile conditions;

[0029] Figure 3 yes Figure 1 A cross-sectional schematic diagram of the two-section protective cover under extreme compression;

[0030] Figure 4 This is a perspective view of the three-section protective cover according to an embodiment of this application;

[0031] Figure 5 yes Figure 4 A three-dimensional cross-sectional diagram of the three-section protective cover under extreme tensile conditions.

[0032] Figure 6 yes Figure 4 A cross-sectional schematic diagram of the three-section protective cover under extreme compression.

[0033] Figure 7 yes Figure 4 A side view of the three-section protective cover under extreme tension.

[0034] Reference numerals: Front end 1; Uniform section 2; Contraction section 3; Rear end 4; First corrugated pipe 5; Second corrugated pipe 6; Third corrugated pipe 7; First transition section L2; Second transition section L1; First peak A; Second peak 23; Third peak B; First trough 24; Second trough 25; Rising corrugation section 22; Falling corrugation section 21; End point C; Lateral spacing D; First lateral spacing E2; Second lateral spacing E1. Detailed Implementation

[0035] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0036] 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0041] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0043] Combination Figures 1 to 3 It shows a prior art two-section protective cover, which consists of two corrugated pipes connected in sequence between the front end and the rear end. The protective cover is divided into front end 1, uniform section 2, contraction section 3 and rear end 4 from left to right. Figure 2 and Figure 3 The connection structures of the uniform segment 2 and the contraction segment 3 under tensile and ultimate compression conditions are shown respectively.

[0044] The uniform segment 2 represents a corrugated descending portion 21 and a corrugated ascending portion 22 with the same length, and all the troughs 24 formed by the corrugated descending portion 21 and the corrugated ascending portion 22 have the same inner diameter, and all the crests 23 formed by the corrugated descending portion 21 and the corrugated ascending portion 22 have the same inner diameter.

[0045] The contraction section 3 represents a corrugated descending section 21 and a corrugated ascending section 22 of the same length. The inner diameter of each of the troughs 24 formed by the corrugated descending section 21 and the corrugated ascending section 22 changes successively with a first amplitude. Similarly, the inner diameter of each of the peaks 23 formed by the corrugated descending section 21 and the corrugated ascending section 22 changes successively with a first amplitude, so as to form a symmetrical contraction section.

[0046] It should be noted that the aforementioned corrugated descending portion 21, corrugated ascending portion 22, crest 23, and trough 24 are described on the upper side of the two-section protective cover in the longitudinal direction (from the front end 1 to the rear end 4), and the lower side is similar, so it will not be described again here. Similarly, the protective cover of this application is also described in the same way.

[0047] Due to the current trend towards longer travel distances in vehicle steering systems, existing two-stage protective covers are no longer adequate for this development. Therefore, this application provides a novel protective cover that, compared to existing two-stage protective covers with the same longitudinal length under extreme compression, offers a longer tensile length, comprising:

[0048] The front end and the back end, from the front end to the back end, include at least a first corrugated pipe and a second corrugated pipe connected in sequence, wherein the front end is connected to the first corrugated pipe, and the first corrugated pipe and the second corrugated pipe are connected through a first transition section, and when the protective cover is in a state of extreme compression, at least a portion of the first transition section abuts against the front end.

[0049] In some embodiments, the protective cover of this application may include one or more corrugated pipes in addition to the first corrugated pipe and the second corrugated pipe, wherein the multiple corrugated pipes are connected in sequence, the end corrugated pipe of the multiple corrugated pipes is connected to the rear end, and the beginning corrugated pipe of the multiple corrugated pipes is connected to the second corrugated pipe.

[0050] Furthermore, in some embodiments, the front end of the protective cover is connected to the first bellows via a second transition section. When the protective cover is in a state of extreme compression, at least a portion of the first transition section abuts against at least a portion of the second transition section. Since the second transition section is connected to the front end and includes the end of the front end, the phrase "at least a portion of the first transition section abuts against at least a portion of the second transition section" can be understood as at least a portion of the first transition section also abutting against the end of the front end.

[0051] Preferably, combined with Figures 4 to 7 This is a schematic diagram of a three-section protective cover at various angles. From the front end 1 to the rear end 4, a first corrugated pipe 5, a second corrugated pipe 6, and a third corrugated pipe 7 are connected sequentially. Specifically, the first corrugated pipe 5 connects to the front end 1, the third corrugated pipe 7 connects to the rear end 4, and the second corrugated pipe 6 connects to both the first corrugated pipe 5 and the third corrugated pipe 7. The second corrugated pipe 6 is connected to the first corrugated pipe 5 via a first transition section L2, and the first corrugated pipe 5 is connected to the end C of the front end 1 via a second transition section L1. Under extreme compression, at least a portion of the first transition section L2 abuts against the front end 1, i.e., the end C of the front end 1, which means at least a portion of the first transition section L2 abuts against at least a portion of the second transition section L1.

[0052] Continue to combine Figures 4 to 7The structural configuration of the first corrugated pipe 5 and the second corrugated pipe 6 of the protective cover of this application will now be illustrated by taking a three-section protective cover as an example. In this case, the first corrugated pipe 5 and the second corrugated pipe 6 of the three-section protective cover are both uniform sections 2, and the third corrugated pipe 7 is a contraction section 3. That is, all the troughs of the first corrugated pipe 5, namely the first trough 24 and the second trough 25, have the same inner diameter, and all the peaks of the first corrugated pipe 5, namely the first peak A, the second peak 23 and the third peak 23, have the same inner diameter. All the troughs of the second corrugated pipe 6 have the same inner diameter, and all the peaks of the second corrugated pipe 6 have the same inner diameter. The inner diameter of all the troughs of the first corrugated pipe 5 is larger than the inner diameter of all the peaks of the second corrugated pipe 6.

[0053] It should be noted that the protective cover in this application is not limited to the above-mentioned three-section protective cover, nor is it limited to the above-mentioned specific uniform section and contraction section of the above-mentioned three-section protective cover.

[0054] Furthermore, in some embodiments, the protective cover of this application in its ultimate compression state, in addition to at least part of the first transition section abutting the front end, also includes a lateral gap between the first bellows in its ultimate compression state and the front end of the protective cover. The lateral gap is located on the outer or inner side of the front end.

[0055] For example, the lateral spacing is located inside the front end. The three-section protective cover includes: on the inside of the front end, the first corrugated pipe and the front end are provided with a lateral spacing, wherein the inside refers to the opposite side of the outside of the front end of the three-section protective cover, that is, the inner side of the front end of the three-section protective cover. Thus, in the extreme compression state, since at least part of the first transition section abuts the front end and the lateral spacing between the first corrugated pipe and the front end of the three-section protective cover in the extreme compression state is located inside the front end, the free space inside the front end of the protective cover can be fully utilized, so that the first corrugated pipe is at least partially stored inside the front end of the three-section protective cover, thereby reducing or avoiding the first corrugated pipe in the extreme compression state adding extra longitudinal length to the protective cover.

[0056] Preferably, please refer to Figures 4 to 7 Its lateral spacing is located on the outer side of the front end. This arrangement makes full use of the empty space after the steering gear is installed on the vehicle. Please refer to [link / reference] for details. Figure 6 A first bellows 5 exists on the outer side of the front end 1, with a lateral distance D between the bellows 5 and the outer side of the front end 1, where "outer side" refers to the outside of the front end 1 of the protective cover. Thus, under extreme compression, because at least part of the first transition section L2 abuts against the end C of the front end 1, and the lateral distance D between the first bellows 5 and the front end 1 of the three-section protective cover under extreme compression, the first bellows is at least partially stored in the free space, thereby reducing or avoiding the first bellows under extreme compression adding extra longitudinal length to the protective cover.

[0057] Understandably, by setting a lateral distance between the first bellows and the front end for storing the first bellows under extreme compression, and by having at least a portion of the first transition section abutting the front end, the protective cover under extreme compression can provide a greater tensile length by utilizing the retractable first bellows under extreme compression. That is, under extreme compression, the first bellows does not need to increase or only slightly increases the longitudinal length of the protective cover; under extreme tension, the first bellows provides additional tensile length, thereby increasing the compression stroke compared to the two-section bellows of the prior art.

[0058] The following is a further explanation of setting the lateral distance between the first corrugated pipe and the front end to the outside of the front end (hereinafter referred to as the outer lateral distance).

[0059] In some embodiments, the first bellows includes a descending corrugation portion and a rising corrugation portion, and at least two peaks and at least one trough formed by the descending and rising corrugations. A first transition section connects the end point of a first end of the first bellows to the second bellows. The first end is the rising corrugation portion. The second transition section connects the beginning point of a first beginning end of the first bellows to the front end. The first beginning end is the descending corrugation portion. The inner diameter of the lowest trough of the first bellows is larger than the inner diameter of the front end. In some embodiments, the inner diameter of the front end can be the inner diameter of the end of the front end, such as the inner diameter of the outer wall of the end of the front end, which is used to connect to the second transition section.

[0060] For example, the first bellows of the three-section protective cover has two crests and one trough. The trough is the lowest trough of the first bellows, and its inner diameter is greater than or equal to the inner diameter of the front end. The two crests at both ends of the first bellows are respectively formed by the first transition section and the endpoint of the first end of the rising section of the first bellows, and the second transition section and the starting point of the first beginning of the falling section of the first bellows. The one trough in the first bellows is formed by the starting point of the first end of the rising section and the endpoint of the first beginning of the falling section of the first bellows. This trough is the lowest trough, and its inner diameter is greater than the inner diameter of the end of the front end of the three-section protective cover.

[0061] Preferably, please refer to Figure 6 and Figure 7The first bellows 5 of the three-section protective cover is a uniform section 2, which has three peaks, namely the first peak A, the second peak 23, and the third peak B, and two troughs, namely the first trough 24 and the second trough 25. The two troughs have the same inner diameter, and both troughs are the lowest troughs of the first bellows 5. Among them, the two peaks located at both ends of the first bellows 5, namely the third peak B, are formed by the first transition section L2 and the end point of the first end of the first bellows 5, which serves as the rising part of the bellows (not shown). The first wave crest A is formed by the second transition section L1 and the first starting point of the first corrugated pipe 5, which serves as the lower corrugation section (not shown); the second wave crest 23 is formed by the upper corrugation section (not shown) and the lower corrugation section (not shown) of the first corrugated pipe 5; the second wave trough 25 is formed by the first starting point of the lower corrugation section (not shown) of the first corrugated pipe 5 and the adjacent upper corrugation section (not shown); the first wave trough 24 is formed by the first ending point of the upper corrugation section of the first corrugated pipe 5 and the adjacent lower corrugation section. The lowest wave trough of the first corrugated pipe 5 includes two troughs, namely the first wave trough 24 and the second wave trough 25, which have an outer lateral spacing D between them and the outer wall of the front end C.

[0062] Understandably, in order to provide sufficient required elongation length for the first corrugated pipe, the first corrugated pipe includes at least two crests and at least one trough, thereby adjusting the number of crests and troughs of the first corrugated pipe according to the elongation length requirement.

[0063] Understandably, in order to adapt to different situations of outer lateral spacing and to achieve the storage of the first bellows under extreme conditions, the inner diameter of the lowest trough of the first bellows is set to be greater than the inner diameter of the front end, thereby establishing that the inner diameter of other troughs is greater than the inner diameter of the front end, so that the first bellows of the protective cover of this application has an outer lateral spacing in its lateral direction for storing the first bellows.

[0064] Furthermore, in order to ensure that the first bellows under extreme compression can be located in the left region corresponding to the dividing line at the end of the front end of the protective cover under extreme compression, the left region including the dividing line, so as to achieve at least partial storage of the first bellows under extreme compression, in some embodiments, the length of the first transition section is set to be greater than the first spacing, and the length of the second transition section is greater than the second spacing, wherein the first spacing is the first lateral spacing between the lowest trough of the first bellows and the end point of the rising corrugation at the first end of the first bellows, and the second spacing is the second lateral spacing between the lowest trough of the first bellows and the starting point of the falling corrugation at the first beginning, and the directions of the first lateral spacing and the second lateral spacing are perpendicular to the longitudinal length of the protective cover, wherein the longitudinal direction is the direction from the front end to the rear end of the protective cover.

[0065] Furthermore, in order to make the first corrugated pipe more fully stored, in some embodiments, the length of the second transition section is greater than the length of the first transition section.

[0066] Preferably, please continue reading. Figure 6 and Figure 7 The length of the first transition section L2 is greater than the first lateral distance E2 between the lowest trough of the first corrugated pipe 5 and the end point (also the third peak B) of the rising part of the first end of the first corrugated pipe 5. The length of the second transition section L1 is greater than the second lateral distance E1 between the lowest trough of the first corrugated pipe 5 and the starting point (also the first peak A) of the falling part of the first beginning of the corrugated pipe 5. As a result, the first corrugated pipe 5 in the ultimate compression state is located in the left region of the end C of the front end 1 of the three-section protective cover, or a small part of the first corrugated pipe 5 is located in the right region of the end C of the front end 1 of the three-section protective cover. Since the first corrugated pipe 5 of the three-section protective cover is a uniform section 2, its lowest trough includes two troughs, namely the first trough 24 and the second trough 25. This allows at least a portion of the first bellows 5 under extreme compression to be stored in the left outer region of the end C at the front end, reducing or avoiding the first bellows 5 under extreme compression from adding extra longitudinal length to the protective cover, thereby using the first bellows to provide extra tensile length, thus increasing the overall tensile and compressive stroke of the protective cover.

[0067] Understandably, when the length of the first transition section is greater than the first spacing, the length of the second transition section is greater than the second spacing, and the first bellows in a state of extreme compression has a lateral spacing with the front end of the protective cover, the first bellows structure of the protective cover in this application can be a uniform section 2, a contraction section 3, or other forms of bellows structure, which are not limited here. Understandably, the lowest trough of the first bellows includes at least one trough of the first bellows.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A protective cover characterized in that, Comprising: a front end and a rear end, wherein at least a first bellows and a second bellows are connected in sequence from the front end to the rear end, the front end being connected to the first bellows; a first transition section connecting the first bellows and the second bellows; at least a portion of the first transition section abutting the front end when the protective cover is in an extreme compressed state.

2. The boot of claim 1, wherein, the front end being connected to the first bellows, comprising: a second transition section connecting the front end and the first bellows; at least a portion of the first transition section abutting at least a portion of the second transition section when the protective cover is in an extreme compressed state.

3. The boot of claim 1, the first bellows comprising a bellows descending portion and a bellows ascending portion, and at least two crests and at least one valley formed from the bellows descending portion and the bellows ascending portion, wherein, the first transition section connecting the first bellows and the second bellows, comprising: the first transition section connecting an end point of a first end of the first bellows and the second bellows, wherein the first end is a bellows ascending portion, and an inner diameter of a lowest valley of the first bellows is greater than an inner diameter of the front end.

4. The boot of claim 3, wherein, a length of the first transition section is greater than a first transverse interval, wherein the first transverse interval is a transverse interval between the lowest valley of the first bellows and the end point of the bellows ascending portion of the first end.

5. The boot of claim 2, wherein, the first bellows comprising a bellows descending portion and a bellows ascending portion, and at least two peaks and at least one valley formed according to the bellows descending portion and the bellows ascending portion, and the second transition section connecting the front end and the first bellows, comprising: the second transition section connecting a start point of a first start of the first bellows and the front end, wherein the first start is the bellows descending portion, and an inner diameter of a lowest valley of the first bellows is greater than an inner diameter of the front end.

6. The boot claimed in claim 5, wherein a length of the second transition section is greater than a second transverse interval, wherein the second transverse interval is a transverse interval between the lowest valley of the first bellows and the start point of the bellows descending portion of the first start.

7. The boot claimed in claim 6, wherein the length of the second transition section is greater than the length of the first transition section.

8. A protective cover according to any one of claims 3 to 7, characterised in that, the lowest valley of the first bellows comprises at least one valley of the first bellows.

9. The boot claimed in any one of claims 1 to 7, characterized in that the protective cover further comprises a third bellows, the third bellows being connected to the second bellows and the rear end, wherein the third bellows is a converging bellows, and the first bellows and the second bellows are uniform bellows.

10. A vehicle characterized by comprising: a steering gear comprising the protective cover according to any one of claims 1 to 9, or / and the steering gear being equipped with the protective cover according to any one of claims 1 to 9.

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