directional terms used in the text such as “ upper ”, “ lower ”, “ horizontal ” and “ vertical ” etc . refer to a normal use state of the assembled pet toilet . for example , a lower surface refers to a surface in contact with the ground when the assembled pet toilet is placed normally on the ground . fig1 schematically shows an assembled pet toilet according to the present invention , such as a dog toilet . the pet toilet comprises a substantially rectangular frame 1 which shape is consistent with the rectangular shape of the commercially available conventional disposable sanitary urine - absorbing pad . the rectangular frame 1 comprises four corner sockets 3 and four insert rods 2 . those skilled in the art appreciate that the shape of the frame 1 of the pet toilet of the present invention is not limited to a rectangular shape . on the contrary , according to shapes of the disposable sanitary urine - absorbing pads used , the shape of the frame 1 can be in any appropriate shapes accordingly such as square , triangle ( using three corner sockets and three insert rods ) or circular shape ( corner sockets and insert rods all are in an arcuate shape ). an engaging end of the corner socket 3 comprises an insertion hole 31 and a sidewall opening 32 ( as shown in fig3 ), an engaging end of the insert rod 2 has an elastic plug ( not shown ) to be inserted into the corresponding insertion hole 31 of the corner socket 3 and to be seized with the sidewall opening 32 . as such , the insert rod 2 can be easily inserted into the corner socket and seized therewith . alternatively , the corner socket 3 can also be configured to be inserted into and seized with the insert rod 2 . such a detachable seizing manner is a conventional arrangement manner in the art . for the sake of brevity , the specific structure of the engaging end of the insert rod 2 will not be described in detail . as shown in fig2 , a lower surface ( or a bottom surface ) of the corner socket 3 of the frame 1 is provided with a hook bonding material 4 . the hook bonding material 4 is a male hook bonding material comprising an array of y - shaped adhesive hooks and is produced by mold pressing a plastic base material . due to the y - shape of the adhesive hooks , the hook bonding material 4 can be firmly adhered to a non - woven fabric material ( a female loop bonding material ) of the commercially available disposable sanitary urine - absorbing pad ( not shown ), such that even if the dog scratches on the sanitary urine - absorbing pad ( in a horizontal direction ) repeatedly , it will not make the bonding of the hook bonding material to the disposable sanitary urine - absorbing pad loose . if the sanitary urine - absorbing pad needs to be removed , it can be torn off easily in a vertical direction . although a preferred shape of adhesive hooks is y shape , the present invention is not limited thereto . on the contrary , any suitable hook bonding material capable of bonding to the material of the sanitary urine - absorbing pad can be used . it is appreciated by those skilled in the art that the hook bonding material 4 is not limited to be provided on the lower surface of the corner socket 3 only . in the case that the insert rod 2 is relatively long , the hook bonding material 4 can also be provided on a lower surface of the insert rod 2 . alternatively , when the frame 1 is of a circular shape , the hook bonding material 4 can be provided in any suitable position of the frame 1 ( insert rod 2 and / or corner socket 3 ). although a preferred arrangement manner of the hook bonding material 4 is described in detail hereunder , those skilled in the art can appreciate that in order to simplify the manufacturing process , the hook bonding material 4 can also be directly fixed to the lower surface of the insert rod 2 and / or the lower surface of the corner socket 3 by bonding or in any other manners ( as shown in fig2 ). as shown in fig3 , the lower surface of the corner socket 3 is provided with a recess 6 . the hook bonding material 4 is fixed on an outer surface of a hook bonding material fixing means 5 . the hook bonding material fixing means 5 is seized in the recess 6 in a way that the hook bonding material 4 is exposed out of the recess 6 to bond to the disposable sanitary urine - absorbing pad . the hook bonding material fixing means 5 comprises a press plate 51 and a seizing frame 52 disposed around the periphery of the press plate . the hook bonding material 4 is seized between the seizing frame 52 and the press plate 51 to prevent the periphery of the hook bonding material 4 from being accidentally rolled up when in use . the hook bonding material 4 can also be bonded to a surface of the press plate , thereby further fixing the hook bonding material 4 . a seizing hook 53 on the seizing frame 52 cooperates with the sidewall opening 61 of the recess 6 to prevent the hook bonding material fixing means 5 from disengaging from the recess 6 . two hollow spring holding posts 8 are provided on the bottom of the recess 6 . around each of the hollow spring holding posts 8 is provided with one helical spring 7 . on an inner surface of the press plate 51 of the hook bonding material fixing means 5 are provided with two insert pins 54 which are respectively inserted into corresponding hollow spring holding posts 8 . the helical spring 7 biases the hook bonding material fixing means 5 to protrude out of the recess 6 a predetermined amount . this configuration enables the assembled pet toilet to maintain balance to a certain extent when the pet toilet is placed on an uneven ground . except for the hook bonding material 4 and the spring 7 , the above members such as the insert rod 2 and the corner socket 3 etc . all can be integrally formed by injection molding process , which can substantially improve production efficiency and reduce costs of products . a method of using the pet toilet of the present invention is described briefly as below . first , the frame 1 of the pet toilet of the present invention is assembled as illustrated in fig1 . then , the commercially available disposable sanitary urine - absorbing pad is bonded to the lower surface of the corner sockets 3 of the frame 1 and is placed on the ground . as such , a pet such as a dog can enter the frame 1 to relieve itself on the sanitary urine - absorbing pad . finally , the used disposable sanitary urine - absorbing pad is stripped off the hook bonding material 4 and a new disposable sanitary urine - absorbing pad is changed for use . although the pet toilet according to the present invention is described in an exemplary manner , those skilled in the art should appreciate that the above contents are only for illustration and not for limitation of the present invention .
the present invention discloses an assembled pet toilet using a disposable sanitary urine - absorbing pad , comprising : a frame ; and a hook bonding material disposed on a lower surface of the frame and configured to bond to the disposable sanitary urine - absorbing pad . the frame can be formed by assembling four corner sockets and four insert rods . the sanitary urine - absorbing pad can be quickly and conveniently fixed or removed . besides , the assembled pet toilet is convenient for packaging , transporting or carrying .