Nozzle Device

Abstract

To provide a nozzle device which can jet a gas and a liquid to a detection surface of a sensor properly.SOLUTION: In one aspect of an embodiment, the nozzle device of a jet device, including a gas jet device and a liquid jet device housed in a housing, comprises: a gas passage; a liquid passage; a gas jet port; and a liquid jet port. The gas passage is connected with the gas jet device and a gas jetted from the gas jet device flows in the gas passage. The liquid passage is connected with the liquid jet device and a liquid jetted from the liquid jet device flows in the liquid passage. The gas jet port jets the gas of the gas passage toward a detection surface of a sensor. The liquid jet port jets the liquid of the liquid passage toward the detection surface of the sensor.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a nozzle device. [Background technology]

[0002] Conventionally, various types of ejection devices have been proposed that remove deposits from a lens, for example, by ejecting gas or liquid toward the lens of an in-vehicle camera that captures images of the vehicle's surroundings (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-154527 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the nozzle device of the ejection device according to the conventional technology has room for improvement in terms of appropriately ejecting gas or liquid onto the detection surface of a sensor such as a camera.

[0005] The present invention has been made in view of the above, and has an object to provide a nozzle device that can appropriately eject gas or liquid onto a detection surface of a sensor. [Means for solving the problem]

[0006] In order to solve the above problems and achieve the object, the present invention provides a nozzle device for a jetting device including a gas jetting device and a liquid jetting device housed in a housing, the nozzle device including a gas flow path, a liquid flow path, a gas outlet, and a liquid outlet. The gas flow path is connected to the gas jetting device, and gas jetted from the gas jetting device flows through it. The liquid flow path is connected to the liquid jetting device, and liquid jetted from the liquid jetting device flows through it. The gas outlet ejects gas from the gas flow path toward a detection surface of a sensor. The liquid outlet ejects liquid from the liquid flow path toward the detection surface of the sensor. Effect of the Invention

[0007] According to the present invention, gas or liquid can be appropriately ejected onto the detection surface of the sensor. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of installation of a jetting system including a nozzle device of a jetting device according to a first embodiment. [Diagram 2] FIG. 2 is a diagram for explaining the positional relationship between the ejection system and the camera. [Diagram 3] FIG. 3 is a plan view showing the appearance of the ejection device. [Figure 4] FIG. 4 is an exploded perspective view of the ejection device. [Diagram 5] FIG. 5 is a diagram for explaining the gas-jetting device and the liquid-jetting device. [Figure 6] FIG. 6 is a perspective view of the nozzle device according to the first embodiment. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. 8 is a perspective view of a nozzle device according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of a nozzle device disclosed in the present application will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiment described below.

[0010] (First embodiment) First, an example of mounting the jetting system including the nozzle device of the jetting device according to the first embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram showing an example of mounting the jetting system including the nozzle device of the jetting device according to the first embodiment. Note that Fig. 1 and each of the figures described below are schematic diagrams.

[0011] As shown in Fig. 1, the ejection system 1 is mounted on a vehicle 2 such as an automobile, and ejects gas or the like. For example, the ejection system 1 is disposed at the rear of the vehicle 2, and removes adhesions attached to a camera (rear camera) 100 that captures an image behind the vehicle 2, using the ejected gas or the like. As an example, the ejection system 1 is disposed above a license plate 3 at the rear of the vehicle 2, and at a position that is approximately in the center of the vehicle 2 in the left-right direction. The adhesions described above include water droplets, snow, dirt, and the like.

[0012] In this embodiment, the target to which the ejection system 1 ejects gas or the like is a camera 100 (an example of a sensor) for capturing images of the rear of the vehicle 2, but is not limited thereto. That is, the ejection target may be, for example, a sensor (more specifically, an optical sensor) that captures images via a lens or acquires information on targets around the vehicle. Specifically, the ejection target may be, for example, a front camera that captures images in front of the vehicle, a side camera that captures images to the sides of the vehicle, a radar device that detects targets around the vehicle, or various other sensors.

[0013] Fig. 2 is a diagram for explaining the positional relationship between the ejection system 1 and the camera 100. Fig. 2 is a cross-sectional view of the rear of the vehicle 2. As shown in Fig. 2, the camera 100 is attached to an outer panel 4 of the back door of the vehicle 2, and is disposed so that a lens 101, which is a detection surface, is exposed to the outside of the vehicle 2.

[0014] The jetting system 1 includes a jetting device 10 and a nozzle device 20. The jetting device 10 is disposed inside the back door, for example, in the space between an outer panel 4 and an inner panel 5. The jetting device 10 includes a gas jetting device 50 and a liquid jetting device 60 (see FIG. 4 described later), and can jet gas and liquid.

[0015] The gas may be, for example, air, but is not limited to this and may be other types of gas, and the liquid may be, for example, water or washer liquid, but is not limited to this and may be other types of liquid.

[0016] The nozzle device 20 is attached to the camera 100. The nozzle device 20 is connected to the jetting device 10 via a gas hose 11a and a liquid hose 11b, and jets the gas or liquid jetted from the jetting device 10 toward the lens 101 of the camera 100. The detailed configuration of the nozzle device 20 will be described later with reference to FIG. 6 etc.

[0017] Next, the jetting device 10 will be described in detail with reference to Figure 3 onwards. Figure 3 is a plan view showing the external appearance of the jetting device 10, and Figure 4 is an exploded perspective view of the jetting device 10.

[0018] For ease of understanding, a three-dimensional Cartesian coordinate system defined by mutually orthogonal X-axis, Y-axis, and Z-axis directions is illustrated in Figures 3 and 4. Such Cartesian coordinate system may also be illustrated in other drawings used in the following description. The Cartesian coordinate system is the X-axis, Y-axis, and Z-axis directions when the ejection device 10 is in the state illustrated, and does not limit the installation direction of the ejection device 10.

[0019] As shown in FIGS. 3 and 4, the jetting device 10 includes a housing 40, a gas jetting device 50 (see FIG. 4), a liquid jetting device 60 (see FIG. 4), and a control board 70 (see FIG. 4).

[0020] The housing 40 houses the gas jetting device 50, the liquid jetting device 60, the control board 70, and the like. As shown in Fig. 3, the housing 40 is configured so that the gas outlet 50a of the gas jetting device 50 is exposed. The gas outlet 50a is connected to the gas hose 11a described above. Thus, the gas jetting device 50 is connected to the nozzle device 20 via the gas hose 11a, and supplies the jetted gas to the nozzle device 20.

[0021] The housing 40 is also configured so that the liquid inlet 60a and the liquid outlet 60b of the liquid jetting device 60 are exposed. The liquid inlet 60a is connected to the tank 30 that stores liquid via the inlet hose 11c. As a result, the liquid from the tank 30 flows into the liquid jetting device 60 via the inlet hose 11c. The liquid outlet 60b is connected to the liquid hose 11b described above. As a result, the liquid jetting device 60 is connected to the nozzle device 20 via the liquid hose 11b, and supplies the jetted liquid to the nozzle device 20.

[0022] The housing 40 is configured so that the connector 12 is exposed. The connector 12 is connected to external devices such as various sensors (not shown), and receives various signals output from the external devices.

[0023] The housing 40 will be described in more detail. As shown in Fig. 4, the housing 40 includes a case main body 41, a lid 42, and a partition plate 43. The case main body 41 is formed in a box shape, and has an opening 41a that opens upward (in the positive direction of the Z axis).

[0024] The lid portion 42 is disposed so as to cover the above-mentioned opening 41a and is attached to the case body portion 41. As a result, a space A is formed between the case body portion 41 and the lid portion 42, and the gas jetting device 50, the liquid jetting device 60, the control board 70, etc. are housed (disposed) in this space A. In this manner, in this embodiment, the gas jetting device 50, the liquid jetting device 60, etc. can be housed in one housing 40, and the jetting device 10 can be made compact.

[0025] Further, a wall portion 41c extending upward from the bottom surface portion 41b is formed in the case main body portion 41. The wall portion 41c divides the case main body portion 41 into an area B in which the gas-jetting device 50 is accommodated and an area C in which the liquid-jetting device 60 is accommodated.

[0026] The partition plate 43 is attached to the case body 41. For example, the partition plate 43 is attached to the case body 41 on the side of the region C described above, and liquid-tightly divides a space in which a jetting part 62 (see FIG. 5) constituting the liquid jetting device 60 is housed. The jetting part 62 is a part through which liquid flows, as described below. Therefore, by attaching the partition plate 43 to the case body 41 in the above manner, even if liquid leaks from the jetting part 62, for example, the liquid can be prevented from entering the space in which the control board 70 and the like are housed.

[0027] The gas-jetting device 50 is a device that ejects gas. The liquid-jetting device 60 is a device that ejects liquid. The detailed configurations of the gas-jetting device 50 and the liquid-jetting device 60 will be described later with reference to FIG.

[0028] The control board 70 is formed, for example, in a plate shape, and various electronic devices and circuits (not shown) are mounted on the control board 70. The control board 70 (circuits, etc.) can simultaneously control a plurality of devices, for example, the gas jetting device 50 and the liquid jetting device 60. Also, for example, at least a portion of the control board 70 is positioned above the liquid jetting device 60 and the partition plate 43 and is housed within the housing 40.

[0029] Next, the gas jetting device 50 and the liquid jetting device 60 will be described in detail with reference to Fig. 5. Fig. 5 is a diagram for explaining the gas jetting device 50 and the liquid jetting device 60. Fig. 5 is a plan view of the jetting device 10, showing a state in which the above-mentioned lid portion 42, control board 70, partition plate 43, etc. have been removed.

[0030] As shown in Fig. 5, the gas ejection device 50 includes a first drive unit 51, a piston unit 52, and a main body unit 53. In Fig. 5, for the sake of simplicity, the first drive unit 51 and the piston unit 52 are indicated by dashed lines.

[0031] The first driving unit 51 drives the piston portion 52. For example, the first driving unit 51 is a motor. The first driving unit 51 operates in response to a control signal from a control device (control unit) (not shown), and outputs a driving force to the piston portion 52.

[0032] The piston portion 52 ejects compressed gas. For example, the piston portion 52 performs piston motion by the driving force from the first driving portion 51, compresses the gas, and generates compressed gas (compressed air). The piston portion 52 then supplies the generated compressed gas to the nozzle device 20 (see FIG. 3) via the gas outlet 50a, and ejects it to the camera 100 (see FIG. 2). The main body portion 53 is a case that houses the first driving portion 51 and the piston portion 52. In this way, the gas ejection device 50 ejects gas by the driving force supplied from the first driving portion 51.

[0033] The liquid jetting device 60 is, for example, a roller pump. Specifically, the liquid jetting device 60 includes a second drive unit 61 and a jetting unit 62. The second drive unit 61 drives the jetting unit 62. For example, the second drive unit 61 is a motor. The second drive unit 61 operates in response to a control signal from a control device (control unit) (not shown), and outputs a driving force to the jetting unit 62.

[0034] The ejection unit 62 is a portion where liquid flows and is ejected in the liquid ejection device 60. For example, the ejection unit 62 includes a gear portion 63, a roller 64, and a tube 65.

[0035] The gear portion 63 rotates by the driving force supplied from the second driving portion 61, and rotates the roller 64. For example, the gear portion 63 includes first to fourth gear portions 63a to 63d. The first to fourth gear portions 63a to 63d are rotatably attached to the case main body portion 41. For example, the first gear portion 63a is connected to the output shaft of the second driving portion 61 and the second gear portion 63b. The second gear portion 63b is connected to the third gear portion 63c, and the third gear portion 63c is connected to the fourth gear portion 63d. A plurality of rollers 64 (four in the example of FIG. 5) are formed on the fourth gear portion 63d. The rollers 64 are formed at predetermined intervals (90 degree intervals here) around the rotation axis 63d1 of the fourth gear portion 63d.

[0036] One end of the tube 65 is connected to the liquid inlet 60a, and the other end is connected to the liquid outlet 60b. Thus, the tube 65 is configured to be able to be filled with liquid from the tank 30. The tube 65 is attached so as to be wound around the roller 64.

[0037] In the liquid jetting device 60 configured as described above, the driving force of the second driving unit 61 is transmitted to the fourth gear unit 63d via the first gear unit 63a, the second gear unit 63b, and the third gear unit 63c, and the roller 64 formed on the fourth gear unit 63d rotates, and the rotation of the roller 64 crushes the tube 65. Then, by utilizing the pressure generated when the tube 65 crushed by the roller 64 returns to its original state, the liquid is pressure-fed through the liquid outlet 60b to the nozzle device 20 (see FIG. 3) and jetted to the camera 100 (see FIG. 2). In this way, the liquid jetting device 60 jets the liquid by the driving force supplied from the second driving unit 61.

[0038] In the above, the liquid ejection device 60 is a roller pump, but the present invention is not limited to this, and other types of mechanisms may be used to eject liquid.

[0039] In this manner, in this embodiment, the first drive unit 51 of the gas-jetting device 50 and the second drive unit 61 of the liquid-jetting device 60 are provided independently of each other. In other words, the gas-jetting device 50 and the liquid-jetting device 60 are configured to include separate drive units (here, the first and second drive units 51, 61).

[0040] As described above, in this embodiment, the gas jetting device 50 and the liquid jetting device 60 are housed in one housing 40. In other words, the gas jetting device 50 and the liquid jetting device 60 are housed adjacent (close to each other) in the housing 40. A single control board 70 (circuit, etc.) housed in the housing 40 (product) is configured to be able to simultaneously control a plurality of devices, such as the gas jetting device 50 and the liquid jetting device 60.

[0041] As a result, in the jetting device 10 according to this embodiment, it is possible to appropriately operate the gas jetting device 50 and the liquid jetting device 60. That is, in the jetting device 10 configured as described above, it is possible to appropriately link and operate the gas jetting device 50 and the liquid jetting device 60, for example, by simultaneously jetting gas and liquid, or by jetting liquid and then continuously jetting gas.

[0042] Next, the nozzle device 20 will be described in detail with reference to Fig. 6. Fig. 6 is a perspective view of the nozzle device 20 according to the first embodiment. Fig. 6 shows a state in which the nozzle device 20 is attached to a camera 100.

[0043] As shown in FIG. 6, the nozzle device 20 includes a gas connection part 21a, a liquid connection part 21b, a flow path part 22, a gas flow path 23a, a liquid flow path 23b, a gas outlet 24a, and a liquid outlet 24b.

[0044] A gas hose 11a is connected to the gas connection part 21a, and gas jetted from a gas jetting device 50 (see FIG. 5) is supplied via the gas hose 11a. A liquid hose 11b is connected to the liquid connection part 21b, and liquid jetted from a liquid jetting device 60 (see FIG. 5) is supplied via the liquid hose 11b.

[0045] Thus, in the nozzle device 20 according to this embodiment, connection ports (here, gas connection part 21a and liquid connection part 21b) corresponding to the gas jetting device 50 and the liquid jetting device 60, respectively, are provided. In other words, in the nozzle device 20, the gas and the liquid are supplied from separate connection ports.

[0046] Flow path section 22 is disposed above main body 100a of camera 100, and is formed to extend to lens 101 (hereinafter may be referred to as "detection surface 101") via both side surfaces 100b of camera 100. Inside flow path section 22, a gas flow path 23a and a liquid flow path 23b are formed, as indicated by dashed lines.

[0047] One end (in other words, the upstream end) of the gas flow path 23a is connected to the gas connection part 21a, and the other end (in other words, the downstream end) is connected to the gas outlet 24a. That is, the gas flow path 23a is connected to the gas ejection device 50 via the gas connection part 21a etc., and the gas ejected from the gas ejection device 50 flows through it.

[0048] The gas outlet 24a is formed in the flow path section 22 at a position above the detection surface 101 of the camera 100. The gas outlet 24a is formed so as to open toward the detection surface 101 of the camera 100. Therefore, the gas outlet 24a ejects the gas flowing through the gas flow path 23a toward the detection surface 101 of the camera 100.

[0049] One end of liquid flow path 23b (in other words, the upstream end) is connected to liquid connection part 21b, and the other end (in other words, the downstream end) is connected to liquid jetting outlet 24b. That is, liquid flow path 23b is connected to liquid jetting device 60 via liquid connection part 21b etc., and liquid jetted from liquid jetting device 60 flows through liquid flow path 23b.

[0050] The liquid outlet 24b is formed in the flow path section 22 at a position above the detection surface 101 of the camera 100. In more detail, the liquid outlet 24b is formed adjacent to the gas outlet 24a, in other words, the liquid outlet 24b is formed in the flow path section 22 so as to be aligned with the gas outlet 24a along the left-right direction (width direction).

[0051] Liquid outlet 24b is formed so as to open toward detection surface 101 of camera 100. Therefore, liquid outlet 24b ejects the liquid flowing through liquid flow path 23b onto detection surface 101 of camera 100.

[0052] In this manner, in this embodiment, a single nozzle device 20 is formed with a gas flow passage 23a and a gas outlet 24a through which gas flows, and a liquid flow passage 23b and a liquid outlet 24b through which liquid flows, separately.

[0053] Therefore, since the gas flow and the liquid flow do not interfere with each other, the gas or liquid can be appropriately ejected onto the detection surface 101 of the camera 100. That is, if the gas flow path and the liquid flow path were the same, for example, the liquid remaining in the flow path may be pushed out of the nozzle device 20 by the gas, resulting in unintended ejection of the liquid. In the nozzle device 20 according to this embodiment, the gas flow path and the liquid flow path are formed separately, so that the above-mentioned unintended ejection of the liquid can be suppressed, and therefore the gas or liquid can be appropriately ejected onto the detection surface 101 of the camera 100.

[0054] Next, the gas outlet 24a and the liquid outlet 24b will be described in detail with reference to Fig. 7. Fig. 7 is a cross-sectional view taken along line VII-VII in Fig. 6.

[0055] 7, tapered portions 24a1 and 24b1 are formed in gas outlet 24a and liquid outlet 24b. In the following, tapered portion 24a1 formed in gas outlet 24a may be referred to as "gas side tapered portion 24a1," and tapered portion 24b1 formed in liquid outlet 24b may be referred to as "liquid side tapered portion 24b1."

[0056] Gas side tapered section 24a1 is formed so as to be inclined toward detection surface 101 of camera 100. In other words, gas side tapered section 24a1 is formed so that the flow path widens toward the downstream side, in other words, the flow path area increases.

[0057] This enables the gas outlet 24a to eject gas over the entire detection surface 101 of the camera 100, as indicated by the arrow Da, thereby efficiently removing any adhesions that have adhered to the detection surface 101 of the camera 100.

[0058] The liquid side tapered portion 24b1 is formed so as to be inclined toward the detection surface 101 of the camera 100. In other words, the liquid side tapered portion 24b1 is formed so that the flow path widens toward the downstream side, in other words, the flow path area increases.

[0059] This enables the liquid outlet 24b to eject liquid over the entire detection surface 101 of the camera 100, as indicated by the arrow Db, thereby efficiently removing any adhesions adhering to the detection surface 101 of the camera 100.

[0060] In the above, tapered portions 24a1, 24b1 are formed in both the gas outlet 24a and the liquid outlet 24b, but this is not limited to this, and a tapered portion may be formed in either one of the gas outlet 24a or the liquid outlet 24b.

[0061] In the nozzle device 20 described above, the gas connection part 21a, the gas flow path 23a, and the gas outlet 24a, and the liquid connection part 21b, the liquid flow path 23b, and the liquid outlet 24b are symmetrical and have the same shape, but this is not limited to this and they may have different shapes.

[0062] As described above, in the first embodiment, the nozzle device 20 of the jetting device 10 includes the gas jetting device 50 and the liquid jetting device 60 housed in the housing 40, and includes the gas flow path 23a, the liquid flow path 23b, the gas outlet 24a, and the liquid outlet 24b. The gas flow path 23a is connected to the gas jetting device 50, and the gas jetted from the gas jetting device 50 flows through it. The liquid flow path 23b is connected to the liquid jetting device 60, and the liquid jetted from the liquid jetting device 60 flows through it. The gas outlet 24a jets the gas in the gas flow path 23a toward the detection surface (lens) 101 of the camera 100 (an example of a sensor). The liquid outlet 24b jets the liquid in the liquid flow path 23b toward the detection surface 101 of the camera 100. This allows the gas and liquid to be appropriately jetted onto the detection surface 101 of the camera 100.

[0063] Second Embodiment Next, the configuration of a nozzle device according to a second embodiment will be described with reference to Fig. 8. In the following, components common to the first embodiment will be given the same reference numerals and descriptions thereof will be omitted. In the following, components in the second embodiment that correspond to those in the first embodiment will be described with a "1" added to the beginning of the reference numeral.

[0064] Fig. 8 is a perspective view of a nozzle device 120 according to the second embodiment. Note that Fig. 8 shows a state in which the nozzle device 120 is attached to the camera 100.

[0065] 8, the nozzle device 120 includes a junction 125, a flow path 126, and a check valve 130. The junction 125 merges the gas flow path 123a and the liquid flow path 123b. For example, the junction 125 is formed such that the liquid flow path 123b is connected to the gas flow path 123a of the gas flowing in a straight line from the side of the gas flow path 123a and merges with the gas flow path 123a.

[0066] The flow path 126 is formed inside the flow path section 122. For example, the flow path 126 is connected to the downstream side of the junction section 125. The flow path 126 branches within the flow path section 122, and the branched flow paths 126 are each connected to the gas outlet 124a and the liquid outlet 124b on the downstream side.

[0067] Therefore, gas and liquid supplied from junction 125 flow through flow path 126, and the gas and liquid are ejected from gas outlet 124a and liquid outlet 124b onto detection surface 101 of camera 100. As described above, since gas flow path 123a and liquid flow path 123b merge, gas outlet 124a may eject liquid, and liquid outlet 124b may eject gas.

[0068] In this manner, since nozzle device 120 according to the second embodiment is provided with confluence section 125, gas or liquid can be appropriately ejected onto detection surface 101 of camera 100.

[0069] That is, in the second embodiment, since the liquid flow path 123b merges with the gas flow path 123a at the junction 125, it is possible to eject the liquid at high speed by ejecting the liquid and the gas in that order. This makes it possible to efficiently remove, for example, any attachments attached to the detection surface 101 of the camera 100, that is, it is possible to appropriately eject the gas or liquid onto the detection surface 101 of the camera 100.

[0070] The check valve 130 is provided in the gas flow path 123a. For example, the check valve 130 is provided upstream of the junction 125 in the gas flow path 123a. The check valve 130 may be a joint part, or may be formed inside the gas flow path 123a or the gas hose 11a. In FIG. 8, the check valve 130 is shown as a schematic block.

[0071] In this way, in the second embodiment, by providing the check valve 130, it is possible to prevent, for example, the liquid in the liquid flow path 123b from flowing back into the gas-discharging device 50 via the gas flow path 123a.

[0072] Further advantages and modifications may readily occur to those skilled in the art. Thus, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and equivalents thereof. [Explanation of symbols]

[0073] 10 Squirting device 20 Nozzle device 23a Gas flow path 23b Liquid flow path 24a Gas outlet 24b Liquid spout 40 Case 50 Gas ejection device 60 Liquid ejection device 100 Cameras

Claims

1. A nozzle device for a jetting device, comprising a gas jetting device and a liquid jetting device housed in a housing, a gas flow path connected to the gas ejection device and through which the gas ejected from the gas ejection device flows; a liquid flow path connected to the liquid jetting device and through which the liquid jetted from the liquid jetting device flows; a gas outlet connected to the gas flow path and configured to eject only the gas in the gas flow path toward a detection surface of a sensor; a liquid ejection port connected to the liquid flow path and ejecting only the liquid in the liquid flow path toward the detection surface of the sensor; Equipped with The gas outlet and the liquid outlet are They are formed separately, arranged side by side in the width direction, and formed to have the same shape that is symmetrical on the left and right. A nozzle device comprising:

2. At least one of the gas outlet and the liquid outlet is A tapered portion inclined toward the sensing surface of the sensor The nozzle arrangement according to claim 1 , further comprising:

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