CN217524952U

CN217524952U - Multifunctional surface cleaning machine

Info

Publication number: CN217524952U
Application number: CN202220610439.6U
Authority: CN
Inventors: 朱泽春; 崔卫民; 朱广
Original assignee: Sharkninja China Technology Co Ltd
Current assignee: Sharkninja China Technology Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-10-04
Anticipated expiration: 2032-03-21

Abstract

The utility model provides a multifunctional surface cleaning machine, which comprises a main machine body provided with a cleaning piece and a base station used for bearing the main machine body, wherein the cleaning piece can wipe and drag the surface to be cleaned; the dehumidification portion also comprises a dehumidification part, and the dehumidification part is communicated with the fan through a pipeline so that the airflow formed by the fan can pass through the dehumidification part to reduce the water content in the airflow passing through the dehumidification part. The utility model has the advantages that the fan is arranged on the base station, so that the fan can blow the surface to be cleaned, and the surface to be cleaned can be quickly dried; through setting up the part that removes water for remove water the moisture in can the adsorbed air, guarantee the drying effect of air.

Description

Multifunctional surface cleaning machine

Technical Field

The utility model belongs to the technical field of cleaning device, specifically provide a multi-functional surface cleaning machine.

Background

Surface cleaning machines are devices for cleaning the floor, including hand-held surface cleaning machines and self-propelled surface cleaning machines, which are capable of replacing manual work for floor cleaning operations. The existing hand-held surface cleaning machines include a cleaning head with a mop assembly and a handle pivotally connected to the cleaning head; the self-moving surface cleaning machine mainly comprises a main machine, a mopping assembly and a driving wheel which are arranged below the main machine, and a liquid storage tank and a spraying system which are arranged inside the main machine.

Conventional surface cleaning machines also typically include a mating base station into which the surface cleaning machine retracts after the cleaning operation is completed. The base station can clean the mopping assembly of the surface cleaning machine and charge the storage battery in the surface cleaning machine. However, when the surface cleaning machine enters or leaves the base station, the mopping assembly is in a relatively wet state, which often causes water stains on the surface to be cleaned near the base station, and the cleaning is not thorough. Meanwhile, after the surface cleaning machine finishes wet mopping work, the water content in the air is often larger, and the influence on the living body feeling of a user is generated.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, namely to solve the problems of water stain on the ground and high air humidity after the cleaning of the prior surface cleaning, the utility model provides a multifunctional surface cleaning machine, the cleaning machine comprises a main machine body provided with a cleaning piece and a base station used for bearing the main machine body, wherein the cleaning piece can wipe and drag the surface to be cleaned;

the base station is provided with a dehumidifying part which comprises a fan, and the fan can suck air around the base station to form airflow to blow to a surface to be cleaned;

or, the dehumidification part comprises the fan and a dehumidification part, and the dehumidification part is communicated with the fan through a pipeline so that the airflow formed by the fan can pass through the dehumidification part to reduce the water content in the airflow passing through the dehumidification part.

Preferably, still be provided with sewage case and clean water tank on the basic station, the sewage case with remove the water component and be linked together, the clean water tank through filtering with the sewage case is linked together.

Preferably, the clean water tank is provided with a liquid flow pipeline leading to the cleaning part and an opening and closing valve arranged on the liquid flow pipeline, and the opening and closing valve can open or close the liquid flow channel.

Preferably, the water removing piece is communicated with a liquid flow pipeline, and the liquid flow pipeline is communicated with the cleaning part through an opening and closing valve.

Preferably, the water removing member is located at a front end of the fan in a flowing direction of the air flow, so that the air flow passes through the water removing member and the fan in sequence.

Preferably, the water removal component comprises a shell and a condensation pipe arranged in the shell, and the arrangement direction of the condensation pipe is parallel to the axis of the shell.

Preferably, the housing is disposed to be inclined with respect to a horizontal plane, and an end of the housing away from the fan is inclined downward compared to an end of the housing close to the fan.

Preferably, a liquid guide groove is formed in the inner side wall of the shell, and the liquid guide groove can collect liquid on the inner side wall of the shell and guide the liquid to flow out of the water removing part.

Preferably, the fan comprises a frame and an impeller mounted on the frame, the rotation axis of the impeller and the axis of the base station have an included angle a, and a < 90 °.

Preferably, the base station is provided with a hinge hole, the frame is provided with a hinge connecting rod, and the fan is mounted on the base station through the cooperation of the hinge hole and the hinge connecting rod, so that the fan can rotate within a certain angle.

As can be appreciated by those skilled in the art, the multifunctional surface cleaning machine of the present invention has at least the following advantages:

1. the utility model discloses a be provided with dehumidification portion on the basic station to set up dehumidification portion into the form including the fan, make the fan can aspirate the air around the basic station, and form the air current and blow to the moist clean surface of treating, air-dry in order to treat clean surface, promote the clean effect of treating clean surface. The phenomena that water stains adhere to the surface to be cleaned for a long time, cleaning is incomplete, and indoor air is humid for a long time are avoided.

In addition, the dehumidification part is additionally provided with the water removal part, and the water removal part is arranged to be communicated with the fan through the pipeline, so that the air flow sucked by the fan can pass through the water removal part, and the water removal part separates the moisture in the air flow, so as to reduce the water content in the air flow. When the airflow blows to the surface to be cleaned, the relatively dry airflow can better carry away the moisture on the ground; simultaneously, relatively dry air current discharges to indoor, can also show the humidity that reduces the air, promotes user's living body and feels and use experience.

2. The base station is provided with the sewage tank and the water purification tank, and the sewage tank is communicated with the dewatering component, so that water flow separated from air after passing through the dewatering component can flow to the sewage tank for storage, and a user can pour the water flow conveniently at one time; the water purification tank is communicated with the sewage tank through the filter piece, so that sewage in the sewage tank is further filtered and then enters the water purification tank to be stored, secondary utilization of purified water is facilitated, and the effects of water saving and energy saving are achieved.

3. In the flowing direction of the air flow, the water removing part is arranged at the front end of the fan, so that when air around the base station is sucked by the fan, humid air can firstly pass through the water removing part, the water removing part can separate moisture in the air, and then relatively dry air passes through the fan and is blown to the surface to be cleaned under the pushing action of the fan. Through the arrangement mode, outside air flow can enter the dewatering element in a large amount and quickly, and the dewatering efficiency of the dewatering element is improved; meanwhile, the air after being dewatered is accelerated by the fan, so that the air flow can be ensured to have higher flowing speed, and the air drying effect of the air flow on the surface to be cleaned is improved.

Drawings

Some embodiments of the invention are described below with reference to the accompanying drawings, in which:

fig. 1 is a front view of a base station in a first embodiment of the present invention;

fig. 2 is an isometric view of a base station in a first embodiment of the present invention;

fig. 3 is an isometric view of a host diagram in a first embodiment of the invention;

FIG. 4 is a schematic structural view of a dehumidifying part according to a first embodiment of the present invention;

fig. 5 is a side view of a base station in a second embodiment of the invention;

fig. 6 is a schematic structural diagram of a fan according to a third embodiment of the present invention;

fig. 7 is a schematic view of the matching relationship between the hand-held surface cleaning machine and the base station according to the present invention.

List of reference numerals:

1-a base station; 11-a charging port; 12-a cleaning section; 13-a carrier; 14-a dehumidification section; 141-a fan; 1411-a rack; 1412-an impeller; 1413-a hinged link; 142-a dewatering element; 1421-housing; 1422-condenser tube; 151-sewage tank; 152-a purified water tank; 153-filter element; 154-a flow channel; 155-opening and closing the valve; 16-a hinge hole; 2-a main machine body; 21-a cleaning member; 22-a stick.

Detailed Description

It is to be understood by those skilled in the art that the embodiments described below are only some of the embodiments of the present invention, which are intended to explain the technical principles of the present invention and not to limit the scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by a person skilled in the art without any inventive work should still fall within the scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The utility model discloses a multifunctional surface cleaning machine, which comprises a main machine body provided with a cleaning piece and a base station used for bearing the main machine body, wherein the cleaning piece can wipe and drag the surface to be cleaned;

or the dehumidifying part comprises a fan and a water removing part, and the water removing part is communicated with the fan through a pipeline so that the airflow formed by the fan can pass through the water removing part to reduce the water content in the airflow passing through the water removing part.

As can be understood by those skilled in the art, the utility model discloses a be provided with dehumidification portion on the basic station to set up dehumidification portion as the form including the fan, make the fan can suction the air around the basic station, and form the air current and blow to the moist surface of treating to clean, air-dry in order to treat the surface of cleaning, promote the clean effect of treating the surface of cleaning. The phenomena that water stains adhere to the surface to be cleaned for a long time, cleaning is incomplete, and indoor air is moist for a long time are avoided.

The invention will be further explained with reference to the following embodiments with reference to the accompanying drawings:

in the first embodiment of the present invention:

as shown in fig. 1 to 3, a multifunctional surface cleaning machine of the present invention includes a main body 2 provided with cleaning members 21 and a base station 1 for carrying the main body 2. The main body 2 can move on the surface to be cleaned and wipe the surface to be cleaned by the cleaning elements 21 to perform the cleaning work. The base station 1 is provided with a carrying section 13 for carrying the main body 2, a charging port 11 for charging the main body 2, and a cleaning section 12 for cleaning the cleaning members 21 on the main body 2. After the main body 2 finishes the cleaning work, the main body 2 can be retracted into the base station 1 and moved onto the bearing part 13, and the base station 1 can be electrically connected with the main body 2 through the charging port 11 to charge the main body 2; the cleaning part 12 can clean or replace the cleaning element 21 of the main body 2 to ensure that the cleaning element 21 of the main body 2 is maintained in a relatively clean state, thereby improving the cleaning effect of the main body 2 on the surface to be cleaned.

With continued reference to fig. 1 to 3, the base station 1 of the present invention is provided with a dehumidification portion 14 in addition to the charging port 11, the bearing portion 13, and the cleaning portion 12. The dehumidifying part 14 includes a fan 141, and the fan 141 can suck air around the base station 1 to form an air flow blowing toward the surface to be cleaned.

As will be understood by those skilled in the art, by providing the dehumidification section 14 on the base station 1 and providing the dehumidification section 14 in a form including the fan 141, the fan 141 can suck air around the base station 1 and generate an air flow to blow toward the wet surface to be cleaned so as to dry the surface to be cleaned, thereby improving the cleaning effect of the surface to be cleaned. The phenomena that water stains adhere to the surface to be cleaned for a long time, cleaning is incomplete, and indoor air is humid for a long time are avoided.

As shown in fig. 4, the dehumidifying part 14 of the present invention further includes a water removing member 142 cooperating with the fan 141, and the water removing member 142 is communicated with the fan 141 through a pipeline, so that the airflow formed by the fan 141 can pass through the water removing member 142, and the water content in the airflow passing through the water removing member 142 is reduced.

It can be understood by those skilled in the art that by additionally providing the dehumidifying part 14 with the water removing member 142 and disposing the water removing member 142 to be in communication with the fan 141 through a duct, so that the air flow sucked by the fan 141 can pass through the water removing member 142, the water removing member 142 separates the moisture in the air flow to reduce the water content in the air flow. When the airflow blows to the surface to be cleaned, the relatively dry airflow can better carry away the moisture on the ground; simultaneously, relatively dry air current discharges to indoor, can also show the humidity that reduces the air, promotes user's living body and feels and use experience.

It should be noted that, the dehumidification portion 14 of the present invention can be separately provided with the fan 141, so that the dehumidification portion 14 can only air-dry the surface to be cleaned;

or, the dehumidification portion 14 of the present invention can be provided with the fan 141 and the water removal member 142 at the same time, and when the fan 141 is turned on and the water removal member 142 is turned off, the dehumidification portion 14 can only air-dry the surface to be cleaned; when the fan 141 and the dewatering element 142 are simultaneously turned on, the fan 141 can dry the surface to be cleaned while sucking air, and the dewatering element 142 can dry the air, so that the dehumidifying part 14 can simultaneously achieve the effects of air drying and dehumidification.

As shown in fig. 4, the base station 1 of the present invention is further provided with a clean water tank 152 and a foul water tank 151, wherein the foul water tank 151 is communicated with the water removing member 142, and the clean water tank 152 is communicated with the foul water tank 151 through a filtering member 153.

As can be appreciated by those skilled in the art, by providing the foul water tank 151 and the clean water tank 152 on the base station 1 and providing the foul water tank 151 in communication with the dehydrating member 142, the flow of water separated from the air after passing through the dehydrating member 142 can flow to the foul water tank 151 for storage, which is convenient for a user to pour at one time; the purified water tank 152 is communicated with the sewage tank 151 through the filter 153, so that sewage in the sewage tank 151 is further filtered and then enters the purified water tank 152 for storage, the purified water is conveniently recycled, and the effects of water saving and energy saving are achieved.

It should be noted that the surface cleaning machine according to the present invention is not particularly limited to the filter 153 disposed between the foul water tank 151 and the clean water tank 152, and may adopt any one of the following embodiments, such as a sponge filter, a filter paper filter, or a graphite filter.

As shown in fig. 4, in addition to the fresh water tank 152 being capable of communicating with the foul water tank 151 to receive the filtered fresh water, the fresh water tank 152 is provided with a flow pipe 154 leading to the cleaning part 12, and an opening and closing valve 155 is installed on the flow pipe 154 to allow the opening and closing valve 155 to open or close a flow passage.

It can be understood by those skilled in the art that the filtered clean water can be stored in the clean water tank 152 by installing the on-off valve 155 on the flow pipe 154 such that the on-off valve 155 is closed; after the on-off valve 155 is opened, the clean water in the clean water tank 152 can flow to the cleaning part 12 of the base station 1 along the liquid flow pipeline 154, so that the cleaning part 12 can clean the cleaning piece 21 of the main machine body 2 by using the clean water, the process that the base station 1 additionally obtains the clean water from the outside is omitted, the clean piece 21 can be cleaned, meanwhile, the water consumption of the base station 1 and the main machine body 2 can be compressed, and the effects of water saving and energy saving are achieved.

As shown in fig. 4, when the fan 141 sucks air, the water removing member 142 is located at a front end of the fan 141 in a flow direction of the air flow, so that the air flow can sequentially pass through the water removing member 142 and the fan 141 in order.

It can be understood by those skilled in the art that, in the flowing direction of the air flow, by arranging the water removing member 142 at the front end of the fan 141, when the air around the base station 1 is sucked by the fan 141, the humid air can pass through the water removing member 142 first, so that the water removing member 142 can separate the moisture in the air, and then the relatively dry air passes through the fan 141 and is blown to the surface to be cleaned under the pushing action of the fan 141. Through the arrangement mode, external air flow can enter the dewatering element 142 in a large amount and quickly, and the dewatering efficiency of the dewatering element 142 is improved; meanwhile, the air after being dewatered is accelerated by the fan 141, so that the air flow can be ensured to have higher flowing speed, and the air drying effect of the air flow on the surface to be cleaned is improved.

As shown in fig. 4, the water removing component 142 of the present invention includes a housing 1421 and a condensation duct 1422 disposed inside the housing 1421, wherein the housing 1421 is inclined relative to the horizontal plane, and one end of the housing 1421 far away from the fan 141 is inclined downward compared to one end of the housing 1421 near the fan 141. And the arrangement direction of the condensation duct 1422 disposed inside the housing 1421 is kept parallel to the axis of the housing 1421.

It can be understood by those skilled in the art that, in the flowing direction of the air flow, the wet air flow firstly passes through the water removing member 142, and the water removing member 142 is provided in a form including the housing 1421 and the condensation duct 1422 installed inside the housing 1421, so that the gaseous water in the air can be condensed into liquid water upon contact, and the liquid water can fall inside the housing 1421 of the water removing member 142. By arranging the housing 1421 to be inclined with respect to the horizontal plane, and the end of the housing 1421 far from the fan 141 is lower than the end of the housing 1421 near the fan 141, the liquid water condensed on the inner surface of the housing 1421 can flow to the end far from the fan 141 under the action of its own gravity, so that the liquid water is prevented from entering the fan 141, and the dryness of the wind blown by the fan 141 is ensured. Meanwhile, the liquid water flows in the same direction, so that the liquid water is conveniently collected, and the phenomenon that the liquid water is stored in the water removing piece 142 in a large amount is avoided.

Further, by arranging the condenser pipes 1422 in a manner parallel to the axis of the housing 1421, the cold air entering from the end of the water removing element 142 away from the fan 141 can smoothly flow out from the end close to the fan 141, and the condenser pipes 1422 in the housing 1421 do not obstruct the flow of the air, so that the passing speed of the air re-removing element 142 and the fan 141 is increased, the fan 141 can be ensured to blow out the air flow at a higher speed, and the drying effect of the dehumidifying part 14 on the surface to be cleaned is improved.

Although not shown in the drawings, a liquid guiding groove is further formed on an inner wall of the housing 1421 of the water removing component 142, and the liquid guiding groove can collect liquid on an inner side wall of the housing 1421 and guide the liquid to flow out of the water removing component 142, so that the liquid can rapidly flow to the liquid flow channel, and the liquid is prevented from being accumulated inside the housing 1421 of the water removing component 142.

It should be noted that, the utility model discloses do not specifically limit to the form that sets up of liquid guide groove, it can adopt any one of following implementation, for example, the liquid guide groove can set up to the bar groove that extends along the circumference of casing 1421, or the liquid guide groove can also set up to the water guide structure that the cross section is for leaking hopper-shaped.

In a second embodiment of the present invention:

although not shown in the drawings, compared with the first embodiment, the water removing member 142 in the present embodiment is directly communicated with the liquid flow pipe 154, and the liquid flow pipe 154 is communicated with the cleaning portion 12 of the base station 1 through the open/close valve 155.

As can be understood by those skilled in the art, by providing the liquid flow pipe 154 on the water removing member 142, the liquid separated by the water removing member 142 can directly flow to the cleaning part 12 through the liquid flow pipe 154, so that the cleaning part 12 can wash the cleaning member 21 with the liquid collected by the water removing member 142, thereby achieving the purpose of saving water and energy.

The liquid flow pipe 154 is provided with the open-close valve 155, so that when the main body 2 moves to the bearing part 13, the open-close valve 155 is opened, the liquid in the dewatering element 142 can smoothly flow to the cleaning part 12, and the cleaning elements 21 on the collection body are cleaned; when the main body 2 is removed from the base station 1, the open/close valve 155 is kept closed to temporarily store the liquid in the draining member 142, so as to prevent the liquid in the draining member 142 from flowing to the cleaning part 12 and causing the liquid to overflow.

In a third embodiment of the present invention:

as shown in fig. 5, compared with the first and second embodiments, the fan 141 in this embodiment includes a housing 1411 and an impeller 1412 mounted on the housing 1411, the housing 1411 is connected with the outer housing 1421 of the base station 1 to enable the housing 1411 to position the impeller 1412, wherein the rotation axis of the impeller 1412 forms an included angle a with the axis of the base station 1, and a < 90 °.

It will be appreciated by those skilled in the art that by providing the rotation axis of the impeller 1412 at an angle a to the axis of the base station 1 and at an angle a of no more than 90 °, the fan 141 is enabled to blow an air flow having a velocity obliquely downward toward the surface to be cleaned, so as to enhance the drying effect of the dehumidifying part 14 on the surface to be cleaned. Wherein the angle a between the rotation axis of the impeller 1412 and the axis of the base station 1 is preferably 45 °.

As a preferred implementation manner of this embodiment, as shown in fig. 6, a hinge hole 16 is provided on the base station 1, a hinge link 1413 is provided on the frame 1411, and the fan 141 is mounted on the base station 1 through the cooperation of the hinge hole 16 and the hinge link 1413, so that the fan 141 can rotate within a certain angle.

It can be understood by those skilled in the art that the fan 141 can be hingedly connected to the sidewall of the base station 1 by providing the hinge hole 16 on the base station 1 and the hinge link 1413 on the housing 1411, and the fan 141 can rotate within a certain angle with respect to the main body of the base station 1. When the hinge link 1413 is horizontally arranged, the fan 141 can rotate in the vertical direction, so that the fan 141 can blow different areas of the surface to be cleaned, and the air drying area of the surface to be cleaned of the fan 141 is enlarged; when the hinge link 1413 is vertically disposed, the fan 141 can be rotated in a horizontal direction, and the drying area of the fan 141 can be enlarged as well.

It should be noted that, as shown in fig. 7, the surface cleaning machines in the first to third embodiments of the present invention may be hand-held surface cleaning machines, or may be self-propelled surface cleaning machines. When the surface cleaning machine is a self-moving surface cleaning machine, the main body 2 can automatically return to the accommodating cavity of the base station 1 after the cleaning work is finished, and the surface to be cleaned or the air around the base station 1 is dried by the dehumidifying part 14; when the surface cleaning machine is a hand-held surface cleaning machine, the surface cleaning machine further comprises a handle bar which is held by a user after the main body finishes cleaning work to put the main body 2 into the receiving cavity of the base station 1, and the dehumidifying part 14 provided on the base station can dry the surface to be cleaned or the air around the base station 1.

So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without deviating from the technical principle of the present invention, those skilled in the art can split and combine the technical solutions in the above embodiments, and also can make equivalent changes or substitutions for related technical features, and any changes, equivalent substitutions, improvements, etc. made within the technical concept and/or technical principle of the present invention will fall within the protection scope of the present invention.

Claims

1. A multifunctional surface cleaning machine comprises a main machine body provided with a cleaning piece, a base station used for bearing the main machine body, wherein the cleaning piece can wipe and drag a surface to be cleaned, the base station is provided with a charging port for charging the main machine body, a cleaning part for cleaning the cleaning piece and a bearing part for bearing the main machine body, and the multifunctional surface cleaning machine is characterized in that:

2. The multi-functional surface cleaning machine of claim 1, wherein the base station is further provided with a foul water tank in communication with the dewatering element and a clean water tank in communication with the foul water tank through a filter element.

3. The multi-functional surface cleaning machine of claim 2, wherein said clean water tank is provided with a flow pipe leading to said cleaning portion and an opening/closing valve provided on said flow pipe, said opening/closing valve being capable of opening or closing said flow pipe.

4. The multifunctional surface cleaning machine of claim 1, wherein the dewatering element is connected to a fluid conduit, and the fluid conduit is connected to the cleaning part through an open/close valve.

5. A multi-functional surface cleaning machine as claimed in claim 1, wherein said moisture removal member is located at the forward end of said fan in the direction of flow of the air stream, such that the air stream flows through said moisture removal member and said fan in sequence.

6. The multifunctional surface cleaning machine of claim 5, wherein the water removing member comprises a housing and a condensation pipe disposed inside the housing, and the condensation pipe is arranged in a direction parallel to the axis of the housing.

7. A multi-function surface cleaning machine as claimed in claim 6, wherein the housing is inclined relative to the horizontal and the end of the housing remote from the fan is inclined downwardly compared to the end of the housing adjacent the fan.

8. The multifunctional surface cleaning machine of claim 6, wherein a liquid guiding groove is formed on the inner side wall of the housing, and the liquid guiding groove can collect the liquid on the inner side wall of the housing and guide the liquid to flow out of the water removing member.

9. A multi-function surface cleaning machine as claimed in claim 1, wherein said fan includes a frame and an impeller mounted on said frame, the axis of rotation of said impeller being at an angle a < 90 ° to the axis of said base station.

10. The multi-functional surface cleaning machine of claim 9, wherein the base station is provided with a hinge hole, the frame is provided with a hinge link, and the fan is mounted on the base station through the cooperation of the hinge hole and the hinge link, so that the fan can rotate within a certain angle.