Patent Description:
At present, a pet feeder in the market mainly opens a food storage bin of the pet feeder by rotating a rotating plate of the pet feeder, so as to flow pet food out of the food storage bin for feeding pets.

For example, a <CIT> entitled "novel automatic feeder", referring to <FIG>, includes a pair of rotating plates <NUM> is driven by a controller to rotate. During rotating the pair of rotating plates <NUM>, one of the pair of rotating plates <NUM> extrudes a return spring <NUM> to open a lower feeding port <NUM>, so that pet food in a food storage box <NUM> flows out through the lower feeding port <NUM>. When the rotating plate <NUM> reaches a side of the lower feeding port <NUM> close to a sliding groove <NUM>, the return spring <NUM> pushes a blocking plate <NUM> to close the lower feeding port <NUM>. However, in this technique, the lower feeding port <NUM> is opened or closed by rotating the blocking plate <NUM> in the lower feeding port <NUM>, when the pet food flows out of the lower feeding port <NUM>, the lower feeding port <NUM> is full of pet food, and the blocking plate <NUM> needs to overcome a resistance of the pet food to close the whole lower feeding port <NUM>. When a weight and a size of the pet food are too large, a problem of grain jamming is occurred, resulting in a phenomenon that the lower feeding port <NUM> can't be completely closed.

Referring to <FIG>, another <CIT> entitled "lower hopper for intelligent pet feeder" discloses that, a bottom plate <NUM> is arranged on a bottom of a storage bin <NUM> and includes a feeding port <NUM> formed thereof, a lower end of a rotating shaft <NUM> passes through a feeding baffle plate <NUM>, an upper end of the rotating shaft <NUM> passes through the bottom plate <NUM> to connect with a rotating cover <NUM>, and the rotating cover <NUM> includes an upper paddle <NUM> formed at a left side and a right side thereof, respectively. When the upper paddle <NUM> rotates, pet food in the storage bin <NUM> is pushed to flow out from the feeding port <NUM>. In the above technical scheme, when the rotating shaft <NUM> and the rotating cover <NUM> rotate, the upper paddle <NUM> is followed to rotate in the storage bin <NUM>, and it is still impossible to ensure that the pet food filled in both the feeding port <NUM> and the storage bin <NUM> isn't blocked between an edge of the feeding port <NUM> and the upper paddle <NUM>, so it is impossible to completely prevent the pet food from blocking the edge of the feeding port <NUM> and the upper paddle <NUM>. Simultaneously, the feeding port <NUM> is always opened, and the pet food will flow out of the storage bin <NUM> until there is no pet food in the storage bin <NUM>. In this case, it is impossible to neither quantitatively feed the pet food for pets, nor ensure that the pet food in the storage bin <NUM> will not be polluted by water vapor and bacteria from outside the feeding port <NUM>, resulting in causing mildew, etc., which will affect pet safety.

In another <CIT> entitled "pet feeder and pet feeding system" discloses that, a first discharge port is set at a lower end of a storage barrel, and a second motor pushes the pet food from the first discharge port into a feeding rotating wheel, and then the feeding rotating wheel outputs the pet food from a second discharge port of the feeding rotating wheel to a guiding recess until the pet food enters a feeding basin. In this patent, firstly, a plurality of motors, and the feeding rotating wheel taken as an intermediate component are needed to be set, the pet food firstly enters the feeding rotating wheel and then is pushed into an external feeding basin, which has a complex structure and a high cost. Furthermore, when the pet food enters the feeding rotating wheel, a rotating paddle driven by the second motor will also be blocked by the pet food. Moreover, the above patent also does not disclose a sealing structure from the feeding basin to the guiding recess, the feeding rotating wheel and the storage barrel, which can't ensure that an external environment will not pollute the pet food in the storage barrel and affect the health of pets. A first related document <CIT> discloses an automated feeder for dispensing measured amounts of feed including a drawer reciprocated by a timer controlled motor; the drawer is provided with a cutting blade and means for changing the capacity of the same. The drawer is positioned in a housing having an inlet opening to a hopper and an offset discharge opening to a trough. A second related document <CIT> discloses a feeder automatically feeds pets, such as dogs, cats, fish or birds at a time and in an amount set by a controller. The construction of the feeder includes in its casing: sloped guide plates installed on the inner wall and on opening in the bottom floor; a feeder housing on the lower side having a power drive transmission of a two-way motor to actuate the insert-feeder being movably fitted into the housing and having an openable cover under the insertion groove of the housing; a controller on a casing side wall for controlling the two-way motor operation with input buttons, indication lights and display windows. The whole assembly is supported on two leg members. A third related document <CIT> discloses a smart pet feeder including an outer shell, a barrel and a feeding device, the shell includes an outer barrel body and barrel lids provided at both ends of the outer barrel body and a bottom shell, the outer barrel body is provided with a discharge channel, the material barrel is installed in the outer barrel body, the material removal device is installed between the material barrel and the bottom shell, the material removal device including a material-discharging rotor and a control gear. A baffle plate is provided between the material barrel and the material-discharging rotor. The material-discharging rotor is provided with several storage tanks distributed alternately, the control gear is drivingly connected to the material-discharging rotor through an umbrella gear mechanism, a micro switch is provided on the outer side of the control gear, and the control gear is provided with the storage tank. The number of touch bumps on a surface is uniform and uniformly distributed. The touch bumps touch the switch reed on the micro switch through the rotation of the control gear, which is implemented on the dial rotor feeding control. A fourth related document <CIT> discloses a dispensing device having an open ended cylinder member for receiving a can container having an open end supported on an annular shoulder at one end of the cylinder member. A cup shaped piston, extendible and retractible relative to the other end of the cylinder member carries a piercing member to pierce a hole in the closed end of the can on an initial retraction of the cup shaped piston within the cylinder member. A second retraction of the piston applies a pressure on the material in the can for discharge from its open end into a material receiving chamber from where it is ejected into a feeding dish. An air bleed hole in the piston is open during the piercing operation and manually closed when material I to be discharged from the can. A fifth related document <CIT> discloses an intelligent push-pull anti-cockroach automatic pet feeder including a feeder main body that includes a base, a driving device arranged in the base, a base cover clamped on the base, and grains are arranged on the base cover. The top of the grain bucket is equipped with a grain bucket cover, the base cover is equipped with a grain transporting trough, and the grain transporting trough is slidably equipped with a grain transporting push block, and the grain transporting push block is equipped with a grain shifting piece above a front side of the base corresponding to the grain transporting trough. There is a grain outlet in a direction, the front end of the grain transporting push block is provided with a grain leakproof baffle, the front end of the grain leakproof baffle is provided with an anti-cockroach sealing strip, and the top of the driving device is connected with the grain transporting push block.

The technical problems to be solved: in view of the shortcomings of the related art, the present invention provides an automatic pet feeding device which can solve technical problems that food jam is occurred when the pet food is delivered, and a grain delivery member and a grain storage bin of the automatic pet feeding device can't be closed after delivery of the pet food is finished.

The problem is solved by providing an automatic pet feeding device as defined in claim <NUM>.

The present invention provides the grain pusher to push the pet food flow out of the grain delivery member, and both the grain leaking member and the grain delivery member can be sealed by the grain pusher, to prevent insects and ants from entering inside the feeding device to breed bacteria and endanger health of pets; in addition, the present invention can realize to quantitatively feed pets and ensure healthy and regular diet of the pets.

In order to more clearly understand the technical solution hereinafter in embodiments of the present invention, a brief description to the drawings used in detailed description of embodiments hereinafter is provided thereof. Obviously, the drawings described below are some embodiments of the present invention, for one of ordinary skill in the related art, other drawings can be obtained according to the drawings below on the premise of no creative work.

The element labels according to the embodiment of the present invention shown as below:
<NUM> grain storage bin, <NUM> grain leaking member, <NUM> third opening, <NUM> fourth opening , <NUM> recess, <NUM> grain pusher, <NUM> flat plate, <NUM> first end, <NUM> second end, A bevel, <NUM> pushing plate, 22a an end of the pushing plate, 22b opposite end of the pushing plate, <NUM> pushing bar, <NUM> first pushing portion, <NUM> second pushing portion, <NUM> pushing granary, 30a, side wall, 30b, an end of the pushing granary, <NUM> grain delivery member, 31a, farthest end, <NUM> first opening, <NUM> second opening, <NUM> bottom portion, <NUM> buffer, <NUM> insertion portion, <NUM> elongated portion, B guiding groove, <NUM> plate member, <NUM> grain bowl, <NUM> grain baffle, <NUM> baffling portion, 71a an end of the baffling portion, <NUM> rotating portion, <NUM> pushing rod, 73a end portion of the pushing rod, <NUM> arc portion, <NUM> flat portion, <NUM> flexible bar, <NUM> grain stirring bar.

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the subject matter presented herein. Obviously, the implementation embodiment in the description is a part of the present invention implementation examples, rather than the implementation of all embodiments, examples.

It should be understood that terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the description of the present invention and the appended claims, "a", "an" and "the" in a singular form are intended to include plural forms, unless the context clearly indicates otherwise.

It should also be further understood that the term "and/or" used in the description of the present invention and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

Referring to <FIG>, an automatic pet feeding device according to the present invention includes a grain storage bin <NUM>, a grain pusher <NUM> and a pushing granary <NUM>. The grain pusher <NUM> is slidably arranged between the grain storage bin <NUM> and the pushing granary <NUM> to open and close the grain storage bin <NUM>, push the pet food that flows into the pushing granary <NUM> when the grain storage bin <NUM> is opened, out of the pushing granary <NUM>, and then close the grain storage bin <NUM> and the pushing granary <NUM> again.

Specifically, the grain storage bin <NUM> includes a grain leaking member <NUM> formed at a lower end thereof, so that the pet food can flow into the pushing granary <NUM> through the grain leaking member <NUM>.

The pushing granary <NUM> is in communication with the grain leaking member <NUM>, arranged below the grain storage bin <NUM> and includes a grain delivery member <NUM>. A part of the grain pusher <NUM> extends into the pushing granary <NUM> and is configured to push the pet food that flows into the pushing granary <NUM>, out of the grain delivery member <NUM> to be used by pets. After the pet food is used, the grain pusher <NUM> seals the grain leaking member <NUM> and the grain delivery member <NUM> to prevent insects and ants from entering inside the feeding device through the grain delivery member <NUM>, to breed bacteria and endanger health of pets.

Specifically, when a user needs to add the pet food to the pet, the grain pusher <NUM> is pushed to move from the grain delivery member <NUM> to be away from the grain delivery member <NUM>, at this time, the grain pusher <NUM> opens the grain delivery member <NUM> and the grain leaking member <NUM> so that the pet food flows from the grain leaking member <NUM> into the pushing granary <NUM>. And then, the grain pusher <NUM> is further pushed to move towards the grain delivery member <NUM> so as to push the pet food out of the grain delivery member <NUM> for being used by pets. After the pet food is used, both the grain leaking member <NUM> and the grain delivery member <NUM> are sealed by the grain pusher <NUM> to prevent insects and ants from entering inside of the feeding device from the grain delivery member <NUM>, to breed bacteria and endanger health of the pets.

The grain pusher <NUM> is set in a sliding way, both the grain delivery member <NUM> and the grain leaking member <NUM> are sealed by moving the grain pusher <NUM>, so as to prevent insects and ants from entering inside of the feeding device from the grain delivery member <NUM>, to breed bacteria and endanger health of the pets. In addition, a sliding setting mode can match with the pet food with different sizes on the market, and has better applicability; at the same time, it can prevent grain from being jammed.

Referring to <FIG> and <FIG>, the grain delivery member <NUM> includes a first opening <NUM> arranged horizontally and a second opening <NUM> arranged vertically. The first opening <NUM> and the second opening <NUM> are connected with each other to form a "¬ " shaped structure therebetween.

In an embodiment of the present invention, the grain delivery member <NUM> is arranged in a "¬ " shaped structure, which can ensure that the pet food in the pushing granary <NUM> flows out quickly and at a maximum flow rate, and prevent the pet food from blocking the pushing granary <NUM>; on the other hand, the grain delivery member <NUM> can cooperate with the grain pusher <NUM> to completely seal the feeding device.

Specifically, the grain pusher <NUM> includes a flat plate <NUM> and a pushing plate <NUM>, the plat plate <NUM> including a first end <NUM> formed close to the grain delivery member <NUM>, and a second end <NUM>. An end 22a of the pushing plate <NUM> is connected with the flat plate <NUM> and an opposite end 22b of the pushing plate <NUM> extends into the pushing granary <NUM>, a length of the pushing plate <NUM> is adapted to a depth of the pushing granary <NUM>, that is, a bottom of the flat plate <NUM> abuts against the pushing granary <NUM>, and at the same time, a length of the pushing plate <NUM> is consistent with a height of the grain delivery member <NUM>. In particular, a connection position between the pushing plate <NUM> and the flat plate <NUM> is located near a middle of the flat plate <NUM>, and the pushing plate <NUM> and the flat plate <NUM> jointly form a T-shaped structure therebetween. The grain pusher <NUM> is slidably connected between the grain storage bin <NUM> and the pushing granary <NUM>, and a sliding direction of the grain pusher <NUM> is the same as or opposite to an outflow direction of the pet food in the pushing granary <NUM>. The flat plate <NUM> opens and closes the grain leaking member <NUM> during movement. A depth of the pushing plate <NUM> is adapted to a depth of the pushing granary <NUM>, so that the pushing plate <NUM> can push the pet food out of the pushing granary <NUM>.

When in use, an initial state is that the grain leaking member <NUM> is sealed by the second end <NUM> of the flat plate <NUM>, and both the first end <NUM> of the flat plate <NUM> and the pushing plate <NUM> cooperatively seal the grain delivery member <NUM>. When the user needs to add the pet food, pushing the grain pusher <NUM> away from the grain delivery member <NUM>, so that the flat plate <NUM> opens the grain leaking member <NUM> and the grain delivery member <NUM>, in this way, the pet food flows into the pushing granary <NUM> from the grain leaking member <NUM>. And then, the grain pusher <NUM> is further pushed to be close to the grain delivery member <NUM>, at this time, the pushing plate <NUM> pushes the pet food in the pushing granary <NUM> to the grain delivery member <NUM>, and then pushes the pet food outside, resulting in returning to the initial state.

An edge of the first opening <NUM> is leveled with the flat plate <NUM>, and the second opening <NUM> is in communication with the first opening <NUM>. A length of the first opening <NUM> is same as that of the first end <NUM>, a height of the second opening <NUM> is same as that of the pushing plate <NUM>. The edge of the first opening <NUM> is leveled with the flat plate <NUM>, in this way, when the flat plate <NUM> moves to the first opening <NUM>, the first opening <NUM> can be closed; the height of the second opening <NUM> is the same as that of the pushing plate <NUM> so that the second opening <NUM> can be closed by the pushing plate <NUM>, so as to obtain an effect that the grain delivery member <NUM> is sealed by the pushing plate <NUM>.

When the grain pusher <NUM> moves away from the grain delivery member <NUM>, the flat plate <NUM> is close to a first end of the grain delivery member <NUM> so that the grain storage bin <NUM> is in communication with the pushing granary <NUM> to open the grain leaking member <NUM>, and at the same time, the grain delivery member <NUM> is also opened in vertical and horizontal directions. When the storage bin <NUM> and the pushing granary <NUM> are connected under an action of the grain pusher <NUM>, the pet food in the storage bin <NUM> can fall into the pushing granary <NUM> from the grain leaking member <NUM> under the action of its own gravity.

When the grain pusher <NUM> moves away from the grain delivery member <NUM>, the first end <NUM> opens the first opening <NUM>, and the pushing plate <NUM> synchronously opens the second opening <NUM>, as the grain pusher <NUM> continues to move, the first end <NUM> gradually seals the grain leaking member <NUM>.

In particular, when the grain pusher <NUM> moves towards the grain delivery member <NUM>, the first end <NUM> of the flat plate <NUM> is close to the grain delivery member <NUM> so that the grain storage bin <NUM> and the pushing granary <NUM> are not connected, the grain leaking member <NUM> is closed, and the grain delivery member <NUM> is gradually closed in the vertical and horizontal directions. At the same time, the pet food in the pushing granary <NUM> flows out of the grain delivery member <NUM> under the action of movement of the pushing plate <NUM>, so as to push the pet food.

That is to say, when the grain pusher <NUM> moves to the farthest end 31a of the grain delivery member <NUM>, the first end <NUM> of the flat plate <NUM> close to the grain delivery member <NUM> is located at the first opening <NUM> to seal the first opening <NUM>, the second end <NUM> of the flat plate part <NUM> away from the grain delivery member <NUM> seals the grain leaking member <NUM>, and the pushing plate <NUM> also seals the second opening <NUM> after all the pet food in the grain storage bin <NUM> is pushed out of the grain delivery member <NUM>.

At this time, both the first opening <NUM> of the grain delivery member <NUM> and the grain leaking member <NUM> of the grain storage bin <NUM> are sealed by the flat plate <NUM> of the grain pusher <NUM> at the same time, and the second opening <NUM> of the grain delivery member <NUM> is sealed by the pushing plate <NUM> that pushes the pet food, thus a double sealing of the grain leaking member <NUM> and the grain delivery member <NUM> is implemented, and the grain delivery member <NUM> is fully sealed in the horizontal and vertical directions.

According the invention, the grain pusher <NUM> is arranged between the grain storage bin <NUM> and the pushing granary <NUM> in a sliding mode. In this way, a size requirement of the grain pusher <NUM> is relatively low, for example, the grain pusher <NUM> with different lengths can be installed. A purpose of opening and closing the grain leaking member <NUM> and the grain delivery member <NUM> can be realized only by controlling a moving travel of the grain pusher <NUM>, which can be suitable for the pet food with different sizes and have stronger applicability thereof.

A structure design of the feeding device is ingenious, the pet food in the pushing granary <NUM> is pushed by the pushing plate <NUM> and the flat plate <NUM>, the grain delivery member <NUM> can be completely sealed in both directions, and at the same time, the flat plate <NUM> seals the grain leaking member <NUM> of the storage granary <NUM>. Compared with a conventional method that only the grain storage bin <NUM> is sealed, such double sealing way of the present invention can effectively prevent external insects and ants from entering the pushing granary <NUM> and the grain storage bin <NUM> from the grain delivery member <NUM> to pollute the pet food, so that the pet food can be kept for a long time without moisture. In addition, the present invention can control an actual conduction size of the grain leaking member <NUM> by controlling the moving travel of the grain pusher <NUM>, so as to facilitate the pet food with different sizes to enter the pushing granary <NUM> from the grain leaking member <NUM>, and further control the conduction time to achieve the purpose of quantitative delivery.

In an embodiment of the present invention, the pushing plate <NUM> also acts as a supporting role during moving the grain pusher <NUM>, and is configured to support the pet food above the pushing plate <NUM>, so as to prevent the flat plate <NUM> from deforming to influence a pushing effect thereof.

Furthermore, the grain delivery member <NUM> of the present invention adopts a two-dimensional opening mode in the vertical and horizontal directions, which can ensure outflow of the pet food to the maximum extent and the maximum flow rate, and no problem of blockage is occurred due to too fast pushing speed.

In an embodiment of the present invention, the first opening <NUM> is coplanar with the flat plate <NUM>, that is, a height of the first opening <NUM> is set to just ensure that the first end <NUM> of the flat plate <NUM> close to the grain delivery member <NUM> completely abuts against an upper end surface of the first opening <NUM> when the first end <NUM> moves to the farthest end 31a of the grain delivery member <NUM>, thereby ensuring the sealing effect thereof.

When the automatic pet feeding device of the present invention is used to add the pet food, the grain pusher <NUM> moves to be close to the farthest end 31a of the grain delivery member <NUM>, both the grain leaking member <NUM> and the grain delivery member <NUM> are completely sealed, when the pet food is added into the grain storage bin <NUM>, the grain pusher <NUM> moves away from the grain delivery member <NUM>, both the grain leaking member <NUM> and the grain delivery member <NUM> are gradually opened, and the pet food flows out of the grain delivery member <NUM> from the grain storage bin <NUM>. When a feeding amount of the pet food reaches a preset value, the grain pusher <NUM> moves towards the grain delivery member <NUM>, during the movement of the grain pusher <NUM>, the flat plate <NUM> gradually seals the grain leaking member <NUM>, and the pushing plate <NUM> also synchronously pushes the remaining pet food in the pushing granary <NUM> out of the grain delivery member <NUM>. Along with the movement of the grain pusher <NUM>, the grain leaking member <NUM> is completely sealed. After the pushing plate <NUM> completely pushes the pet food out of the pushing granary <NUM>, the pushing plate <NUM> has moved to the second opening <NUM> of the grain delivery member <NUM> to seal the second opening <NUM>, and the first end <NUM> of the flat plate <NUM> close to the grain delivery member <NUM> is also located in the first opening <NUM> and abutted against the upper end face of the first opening <NUM>, that is, after the pushing plate <NUM> pushes all the pet food out of the pushing granary <NUM>, the grain delivery member <NUM> is just sealed in two directions.

In a next feeding of the pet food, the grain pusher <NUM> moves away from the grain delivery member <NUM> again to realize the feeding, and repeat the above actions.

In an optional embodiment of the present invention, the automatic pet feeding device also includes a buffer <NUM> vertically arranged on a side of the grain leaking member <NUM> close to the grain delivery member <NUM>, the buffer <NUM> is in a long-strip shape. The grain leaking member <NUM> also includes a third opening <NUM> and a fourth opening <NUM> connected with the third opening <NUM>. The fourth opening <NUM> is arranged above the third opening <NUM> and is connected with the pushing granary <NUM>. A cross section of the grain leaking member <NUM> is L-shaped. The third opening <NUM> is parallel to a plane that the flat plate <NUM> is located in, the buffer <NUM> installed in the fourth opening <NUM>, the grain storage bin <NUM> includes a recess <NUM> close to the fourth opening <NUM>, one end of the buffer <NUM> inserted into the recess <NUM> to block the fourth opening <NUM>.

When both the grain leaking member <NUM> and the grain delivery member <NUM> are opened, the pet food located in the grain storage bin <NUM> flows out from the grain leaking member <NUM> and the grain delivery member <NUM>. A part of the pet food that flows out is in contact with the buffer <NUM> during the flow, the buffer <NUM> acts as a barrier to prevent the pet food from passing through the grain delivery member <NUM> and then flowing directly from the grain leaking member <NUM> with a great angle and a great direction, resulting in the pet food that flows from the grain delivery member <NUM> dispersing into a large space and being difficult to be gathered together, so that the pet food can't be effectively held in a feeding container.

Furthermore, the buffer <NUM> includes an insertion portion <NUM> and an elongated portion <NUM> connected with the insertion portion <NUM>, a thickness of the insertion portion <NUM> along a moving direction of the grain pusher <NUM> is greater than a thickness of the elongated portion <NUM> along the moving direction of the grain pusher <NUM>, and the insertion portion <NUM> fixed in the recess <NUM>.

In an embodiment of the present invention, a bottom end of the elongated portion <NUM> is consistent with an edge height of the fourth opening <NUM> of the grain leaking member <NUM>, on the one hand, the flowing pet food can be pushed during the movement of the grain pusher <NUM> to prevent the pet food from flowing out of the gap between the grain pusher <NUM> and the buffer <NUM>, at the same time, it can cooperate with the edge of the fourth opening <NUM> to seal the grain leaking member <NUM>, which also ensures a smooth movement of the grain pusher <NUM> without hindering the grain pusher <NUM>. On the other hand, the grain leaking member <NUM> is arranged in an inserting mode instead of being additionally arranged on the outside of the grain pusher <NUM>, so that the whole grain storage bin <NUM> can be ensured to be smaller in a size, and the height of the grain pusher <NUM> is not increased.

In an embodiment of the present invention, the long strip-shaped buffer <NUM> serves a purpose of preventing some pet food from directly flowing from the grain leaking member <NUM> and the grain delivery member <NUM>. At the same time, the thicker insertion portion <NUM> is fixed in the recess <NUM> to ensure a fixing strength of the buffer <NUM> and improve an impact resistance of the buffer <NUM> that comes from the flowing pet food.

In an embodiment of the present invention, the grain storage bin <NUM> includes a grain stirring bar <NUM>, when the grain stirring bar <NUM> rotates, the pet food stored in the grain storage bin <NUM> flows out through the grain leaking member <NUM> along with the stirring, the grain stirring bar <NUM> pushes the pet food in the grain storage bin <NUM> to the grain leaking member <NUM>, which is conducive to the pet food falling into the pushing granary <NUM> from the grain leaking member <NUM>.

In an embodiment of the present invention, under an action of the grain stirring bar <NUM>, the pet food flows out of the grain leaking member <NUM> faster, at this time, the buffer <NUM> has a more obvious blocking effect, which can ensure that the pet food flowing out of the grain delivery member <NUM> is relatively concentrated. The thicker insertion portion <NUM> is fixed in the reess <NUM>, which further ensures the fixing strength of the buffer <NUM> and can be adapted to a higher speed flow of the pet food.

In some preferred embodiments, the buffer <NUM> is made of a soft material. The buffer <NUM> made of the soft material can play as a buffer role in the process of the pet food flowing from the grain leaking member <NUM>, the effect of preventing the pet food from flowing directly from the grain delivery member <NUM> is more obvious, which can withstand a greater impact from the pet food.

The buffer <NUM> made of the soft material in the present invention has another more important beneficial effect, that is, when the grain pusher <NUM> moves towards the grain delivery member <NUM>, a blockage between the grain pusher <NUM> and the buffer <NUM> can be prevented.

Specifically, in the process of that the grain pusher <NUM> moves towards the grain delivery member <NUM>, as a distance between a tip position of the flat plate <NUM> close to the grain delivery member <NUM> and the buffer <NUM> gradually decreases, the pet food flowing from the elongated portion <NUM> of the buffer <NUM> and the tip position of the flat plate <NUM> collides with the elongated portion <NUM>, and the elongated portion <NUM> pushes the collided pet food to move in a small range along an opposite direction that the pet food flows under an elastic action of the elongated portion <NUM>, that is, moving towards the grain storage bin <NUM>, so that the pet food moving towards the inside of the grain storage bin <NUM> and the pet food flowing out of the grain storage bin <NUM> interact with each other, which is beneficial to ensuring that the pet food flowing out from the grain leaking member <NUM> is in a loose state, thereby preventing blockage thereof. Meanwhile, part of the pet food acted by the buffer <NUM> can be ejected to the upper surface of the flat plate <NUM> under the action of the buffer <NUM>, namely, in the grain storage bin <NUM>, the pet food which is difficult to directly pass through the buffer <NUM> can't be gathered in a small space, and therefore a phenomenon of grain blocking can be avoided.

Another most important state is that in the process of moving the grain pusher <NUM> towards the grain delivery member <NUM>, as the distance between the tip position of the flat plate <NUM> close to the grain delivery member <NUM> and the buffer <NUM> gradually decreases, some pet food with larger sizes are clamped in an area between the tip position of the flat plate <NUM> and the buffer <NUM>. When the grain pusher <NUM> continues to move, the buffer <NUM> generates elastic deformation towards the grain delivery member <NUM>, at this time, the buffer <NUM> acts on the pet food with the larger sizes to spring away the pet food with the larger sizes, so as to ensure that the grain pusher <NUM> can move further and prevent blockage thereof.

In a preferred embodiment of the present invention, a bevel A facing the pushing granary <NUM> is also included at an end of the grain pusher <NUM> towards the grain delivery member <NUM>. At this time, when the pet food with the larger size is clamped on the buffer <NUM> and the tip position of the grain pusher <NUM> near the grain delivery member <NUM>, the pet food can be bounced into the pushing granary <NUM> along the bevel A under the action of the buffer <NUM>.

Referring to <FIG>, in an optional embodiment, a guiding groove B is formed on a side wall 30a of the pushing granary <NUM>, a width of the guiding groove B is adapted to that of the flat plate <NUM>, and the flat plate <NUM> is placed in the guiding groove B. The pushing granary <NUM> is arranged at an end of a bottom wall of the guiding groove B, and the grain delivery member <NUM> is arranged at an end 30b of the pushing granary <NUM>. In an optional embodiment, the grain pusher <NUM> is also provided with a plate member <NUM>, a lower surface of the plate member <NUM> abuts against the grain pusher <NUM>, and an upper surface of the plate member <NUM> abuts against the bottom of a horizontal opening of the grain leaking member <NUM>, so that the grain pusher <NUM> is vertically limited, and the grain pusher <NUM> can horizontally move in the guiding groove B.

In an optional embodiment, the automatic pet feeding device of the present invention further includes a grain bowl <NUM> arranged below the grain delivery member <NUM>, so that the pet food can fall into the grain bowl <NUM> from the grain delivery member <NUM> for pets to eat. A distance between the grain bowl <NUM> and the grain delivery member <NUM> is enough great in the present invention, so as to avoid an occurrence of pet food blockage.

Referring to <FIG> and <FIG>, according the invention, the automatic pet feeding device further includes a grain baffle <NUM> arranged close to the grain delivery member <NUM> and configured to open and close the grain delivery member <NUM>. When the pushing granary <NUM> is in communication with the grain leaking member <NUM>, the grain delivery member <NUM> is closed by the grain baffle <NUM>. When the pushing granary <NUM> is connected with the grain leaking member <NUM>, the pet food in the grain storage bin <NUM> leaks into the pushing granary <NUM> from the grain leaking member <NUM>, at this time, the grain baffle <NUM> closes the grain delivery member <NUM> to prevent the pet food from leaking out of the grain delivery member <NUM>, so that an amount of the pet food that is pushed out of the pushing granary <NUM> by the grain pusher <NUM> is fixed every time. When the pushing granary <NUM> is not connected with the grain leaking member <NUM>, the grain delivery member <NUM> is opened at this time, the grain pusher <NUM> can push the pet food in the pushing granary <NUM> out of the grain delivery member <NUM>, so as to control the pet food output from the grain delivery member <NUM> every time and ensure the healthy and regular diet of the pets. Referring to <FIG>, the grain baffle <NUM> includes a baffling portion <NUM>, a rotating portion <NUM> and a pushing rod <NUM>, the rotating portion <NUM> arranged at an end 71a of the baffling portion <NUM>, and the pushing rod <NUM> connected to the rotating portion <NUM>; the rotating portion <NUM> rotationally arranged at a bottom portion <NUM> of the pushing granary <NUM>, and an angle formed between the pushing rod <NUM> and the baffling portion <NUM>. The grain pusher <NUM> includes a pushing bar <NUM> corresponding to the pushing rod <NUM>. When the grain pusher <NUM> moves along the direction towards or away from the grain delivery member <NUM>, the pushing bar <NUM> pushes the pushing rod <NUM>, thereby pushing the rotating portion <NUM> and the baffling portion <NUM> to rotate, so that the baffling portion <NUM> opens and closes the grain delivery member <NUM>. When the grain delivery member <NUM> is opened, the baffling portion <NUM> is parallel to a bottom wall of the pushing granary <NUM>, at this time, the pushing granary <NUM> and the baffling portion <NUM> cooperatively form an open cavity with an opening, so that the pet food in the pushing granary <NUM> can be pushed out of the pushing granary <NUM> by the grain pusher <NUM>. When the baffling portion <NUM> closes the grain delivery member <NUM>, the included angle is formed between the baffling portion <NUM> and the bottom wall of the pushing granary <NUM>. At this time, the baffling portion <NUM> and the pushing granary <NUM> will cooperatively form a closed cavity therebetween, the pet food leaked from the grain leaking member <NUM> into the pushing granary <NUM> can only be stored in the closed cavity that is formed by the baffling portion <NUM> and the pushing granary <NUM>, in this way, the amount of the pet food flowing into the pushing granary <NUM> every time is fixed, so as to achieve the effect of quantitative feeding. All the baffling portion <NUM>, the rotating portion <NUM> and the pushing rod <NUM> are integrally formed.

Referring to <FIG>, the pushing bar <NUM> includes a first pushing portion <NUM> and a second pushing portion <NUM> connected with each other, the second pushing portion <NUM> arranged close to the grain delivery member <NUM>, and a thickness of the second pushing portion <NUM> that is towards the pushing rod <NUM> greater than a thickness of the first pushing portion <NUM> that is towards the pushing rod <NUM>. The pushing rod <NUM> includes an arc portion <NUM> and a flat portion <NUM> arranged on an end portion 73a thereof. The arc portion <NUM> is arranged close to the grain delivery member <NUM>, and the flat portion <NUM> is connected with the arc portion <NUM>. A distance between a position where the arc portion <NUM> is connected with the flat portion <NUM> and the rotating portion <NUM> is longer than a distance between other positions where the arc portion <NUM> is connected with the flat portion <NUM> and the rotating portion <NUM>. When the grain baffle <NUM> is opened, the flat portion <NUM> of the pushing rod <NUM> is in contact with the first pushing portion <NUM> of the pushing bar <NUM>, and the grain pusher <NUM> moves towards the inside of the grain delivery member <NUM>, at this time, the flat portion <NUM> moves along the first pushing portion <NUM> until the second pushing portion <NUM> moves to the pushing rod <NUM>. An end face of the second pushing portion <NUM> hooks the pushing rod <NUM> to rotate, and the grain pusher <NUM> continues to move until the arc portion <NUM> of the pushing rod <NUM> is in contact with a side of the second pushing portion <NUM> towards the pushing rod <NUM>, at this time, the grain baffle <NUM> closes the grain delivery member <NUM>, and the arc portion <NUM> of the pushing rod <NUM> moves along the second pushing portion <NUM>.

When the grain delivery member <NUM> is opened, the grain pusher <NUM> moves towards the grain delivery member <NUM>, a position of the second pushing portion <NUM> towards the pushing rod <NUM> is in contact with the arc portion <NUM> of the pushing rod <NUM>, and the arc portion <NUM> will not affect the movement of the pushing bar <NUM> when the second pushing portion <NUM> moves towards a side of the pushing rod <NUM>, that is, the arc portion <NUM> will not jam the second pushing portion <NUM>. After the second pushing portion <NUM> completely moves over the pushing rod <NUM>, the pushing rod <NUM> perfectly transitions to the first pushing portion <NUM> of the pushing bar <NUM>, and is in contact with the first pushing portion <NUM>. At this time, the baffling portion <NUM> is leveled with the bottom portion <NUM> of the pushing granary <NUM>, the grain delivery member <NUM> is opened, and the grain pusher <NUM> continuously pushes the pet food out of the pushing granary <NUM> completely.

Furthermore, the feeding device further includes a flexible bar <NUM> arranged on the baffling portion <NUM> and the bottom portion <NUM> of the pushing granary <NUM>. When the baffling portion <NUM> rotates, a gap is formed between the baffling portion <NUM> and the bottom portion <NUM> of the pushing granary <NUM>. By setting the flexible bar <NUM>, fragments of the pet food can be prevented from leaking out of the gap. The flexible bar <NUM> is made of a flexible material, and a position of the flexible bar <NUM> corresponding to the baffling portion <NUM> can rotate along with the baffling portion <NUM>. A thickness of the flexible bar <NUM> is relatively thin, for example, the thickness of the flexible bar <NUM> is <NUM>, in this way, the flexible bar <NUM> will not affect the rotation of the baffling portion <NUM>.

When the automatic pet feeding device of the present invention is used, first adding the pet food into the grain storage bin <NUM> for standby, at this time, the grain pusher <NUM> closes the grain leaking member <NUM> and the grain delivery member <NUM>, so that the pet food can't be leaked from the grain leaking member <NUM> to the pushing granary <NUM>. When needing to feed the pet, pushing the grain pusher <NUM> away from the grain delivery member <NUM>, so that the pushing granary <NUM> is connected with the grain storage bin <NUM>, and the grain leaking member <NUM> and the grain delivery member <NUM> are opened by the grain pusher <NUM>. When the grain delivery member <NUM> is fully opened by the grain pusher <NUM>, the pushing bar <NUM> of the grain pusher <NUM> pushes the grain baffle <NUM>, so that the grain baffle <NUM> is arranged at the included angle with the bottom wall of the pushing granary <NUM> to seal the pushing granary <NUM>. At this time, the pet food leaks into the pushing granary <NUM> from the grain leaking member <NUM>, so as to ensure that the pet food that is leaked into the pushing granary <NUM> every time does not exceed a volume of the pushing granary <NUM>, so as to achieve the effect of quantitative feeding. And then, the grain pusher <NUM> pushes towards the grain delivery member <NUM>, in this movement, the pushing plate <NUM> of the grain pusher <NUM> pushes the pet food in the pushing granary <NUM> to the grain delivery member <NUM>, and the pushing bar <NUM> of the grain pusher <NUM> pushes the grain baffle <NUM> until the grain baffle <NUM> rotates to be parallel to the bottom wall of the pushing granary <NUM>, to open the grain delivery member <NUM>, the grain pusher <NUM> is continued to be pushed until the pet food is pushed into the external grain bowl <NUM>, thereby feeding the pets.

Claim 1:
An automatic pet feeding device comprising:
a grain storage bin (<NUM>) comprising a grain leaking member (<NUM>) formed at a lower end thereof;
a pushing granary (<NUM>) arranged below the grain storage bin (<NUM>) and comprising a grain delivery member (<NUM>), the pushing granary (<NUM>) in communication with the grain leaking member (<NUM>);
a grain pusher (<NUM>) slidably arranged between the grain storage bin (<NUM>) and the pushing granary (<NUM>); and wherein
the grain pusher (<NUM>) is configured to push pet food in the pushing granary (<NUM>) out of the grain delivery member (<NUM>), and open or close the grain leaking member (<NUM>) and the grain delivery member (<NUM>); and wherein, the feeding device further comprises: a grain baffle (<NUM>) arranged close to the grain delivery member (<NUM>) and configured to open and close the grain delivery member (<NUM>);
the feeding device further configured such that when the pushing granary (<NUM>) is in communication with the grain leaking member (<NUM>), the grain delivery member (<NUM>) is closed by the grain baffle (<NUM>), and when the pushing granary (<NUM>) is not connected with the grain leaking member (<NUM>), the grain delivery member (<NUM>) is opened by the grain baffle (<NUM>); characterized in that
the grain baffle (<NUM>) comprises a baffling portion (<NUM>), a rotating portion (<NUM>) and a pushing rod (<NUM>), the rotating portion (<NUM>) arranged at an end (71a) of the baffling portion (<NUM>), and the pushing rod (<NUM>) connected to the rotating portion (<NUM>); the rotating portion (<NUM>) rotationally arranged at a bottom portion (<NUM>) of the pushing granary (<NUM>); the grain pusher (<NUM>) comprising a pushing bar (<NUM>) corresponding to the pushing rod (<NUM>); and wherein
the pushing bar (<NUM>) comprises a first pushing portion (<NUM>) and a second pushing portion (<NUM>) connected with the first pushing portion (<NUM>), the second pushing portion (<NUM>) arranged close to the grain delivery member (<NUM>), and a thickness of the second pushing portion (<NUM>) that is towards the pushing rod (<NUM>) greater than a thickness of the first pushing portion (<NUM>) that is towards the pushing rod (<NUM>); the pushing rod (<NUM>) comprising an arc portion (<NUM>) arranged close to the grain delivery member (<NUM>), and a flat portion (<NUM>) connected with the arc portion .