P1001011 Regulation 3.2 AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION INNOVATION PATENT Invention Title: Flush toilet cover plate connecting structure The following statement is a full description of this invention, including the best method of performing it known to us: 2 Flush toilet cover plate connecting structure Field of the invention The invention relates to a flush toilet cover plate connecting structure. Background of the invention 5 A thread type mounting structure is basically employed for mounting flush toilet cover plates in the market at present. Locking the cover plate through this structure is quite time-consuming; moreover, it is necessary to remove a screw when dismounting the cover plate; this is inconvenient for regular mounting and dismounting, and also causes inconvenience in cleaning and replacing the cover plate. 10 The present invention aims to provide a flush toilet cover plate connecting structure which has reasonable structure and is convenient to mount and dismount the flush toilet cover plate. Reference to any prior art in the specification is not, and should not be taken as, an acknowledgment or any form of suggestion that this prior art forms part of the [5 common general knowledge in Australia or any other jurisdiction or that this prior art could reasonably be expected to be ascertained, understood and regarded as relevant by a person skilled in the art. Summary of the invention The invention accordingly provides a flush toilet cover plate connecting structure 20 comprising a rodlike hinge body rotatably connected to a flush toilet cover plate as well as a left connecting piece and a right connecting piece fixed to the flush toilet; the left connecting piece and the right connecting piece are respectively provided with a left clamping joint and a right clamping joint; a lockpin shaft hole coaxially that passes through the hinge body and a left clamping hole and a right clamping hole that 25 communicate with the lockpin shaft hole, and a key slot are disposed on the hinge body; the left clamping hole and the right clamping hole are disposed on the left side and the right side of the key slot; the left clamping joint and the right clamping joint are correspondingly inserted into the left clamping hole and the right clamping hole; a left 3 lockpin and a right lockpin which can be clamped or separated from the left clamping joint and the right clamping joint are inserted in the lockpin shaft hole; a left key, a right key and a spring are disposed on the key slot, wherein the left key and the right key are able to drive the left lockpin and the right lockpin to mutually slide close to each other 5 along the coaxial direction so as to be separated from the left clamping joint and the right clamping joint; the spring are able to drive the left lockpin and the right lockpin to reversely reset so as to be clamped with the left clamping joint and the right clamping joint; the two ends of the spring are respectively pressed on the left lockpin and the right lockpin; moreover, a left handle and a right handle respectively extending out of the key 0 slot are disposed on the left key and the right key. The flush toilet cover plate connecting structure is preferably further characterized in that: the outer ends of the left lockpin and the right lockpin are respectively provided with a left stainless steel plate and a right stainless steel plate; the outside edges of the left stainless steel plate and the right stainless steel plate are 5 respectively provided with a left bayonet and a right bayonet clamped with the left clamping joint and the right clamping joint; moreover, a left annular clamping slot and a right annular clamping slot clamped with the left bayonet and the right bayonet are correspondingly disposed on the left clamping joint and the right clamping joint. Compared with the prior art, the flush toilet cover plate connecting structure A0 possesses the advantages that: During mounting, the left clamping hole and the right clamping hole on the hinge body are respectively and correspondingly sheathed outside the left clamping joint and the right clamping joint on the left connecting piece and the right connecting piece; the cover plate is then pressed downwards so that the hinge body moves downwards; when 25 the hinge body moves downwards to a set position, the left lockpin and the right lockpin are pushed to reversely reset under the effect of the tension of the spring; at that point, the left bayonet and the right bayonet on the left stainless steel plate and the right stainless steel plate are flatly inserted into the left annular clamping slot and the right annular clamping slot on the left clamping joint and the right clamping joint; the clamping 30 between the flush toilet cover plate and the flush toilet is complete when a click is heard; when the cover plate is to be taken out for cleaning or replacing, the left handle and the 4 right handle are pressed manually; the left key and the right key drive the left lockpin and the right lockpin to mutually slide close to each other so as to be separated from the left clamping joint and the right clamping joint; the spring is then further compressed; at that point, the pressure on the left handle and the right handle is maintained and the 5 cover plate is lifted upwards to complete dismounting the cover plate. Therefore, the flush toilet cover plate connecting structure with reasonable structure is convenient to mount and dismount and is convenient for daily maintenance by users. Brief description of the drawings / figures The will now be described by way of example only with reference to the accompanying [0 drawings in which: Fig. 1 is a three-dimensional structural drawing of an embodiment of the invention; Fig. 2 is a breakdown structural drawing of an embodiment of the invention; Fig. 3 is a principal sectional structural drawing of an embodiment of the invention; Fig. 4 is a working condition drawing of an embodiment of the invention. 15 Detailed description of the embodiments As shown in Figures 1, 2, 3 and 4, the flush toilet cover plate connecting structure comprises the rodlike hinge body 2 and the left connecting piece 4 and the right connecting piece 5; the hinge body 2 is rotatably connected with the flush toilet cover plate 1 through a left hydraulic hinge 9 and a right hydraulic hinge 8 at the two ends; the 20 left clamping piece 4 and the right clamping piece 5 are fixed on the flush toilet 3 by threads at set intervals; the left connecting piece 4 and the right connecting piece 5 are respectively provided with a left clamping joint 41 and a right clamping joint 51; the lockpin shaft hole 20 that coaxially passes through the hinge body 2 as well as the left clamping hole 21 and the right clamping hole 22 that communicates with the lockpin 25 shaft hole 20 and the key slot 23 are disposed on the hinge body 2; the left clamping hole 21 and the right clamping hole 22 are disposed on the left side and the right side of the key slot 23; the left clamping joint 41 and the right clamping joint 51 are correspondingly inserted into the left clamping hole 21 and the right clamping hole 22; 5 the left lockpin 61 and the right lockpin 62 which can be clamped or separated from the left clamping joint 41 and the right clamping joint 51 are inserted in the lockpin shaft hole 20; the left key 63, the right key 64 and the spring 60 are disposed on the key slot 23, wherein the left key 63 and the right key 64 are able to drive the left lockpin 61 and the 5 right lockpin 62 to mutually slide close to each other along the coaxial direction so as to be separated from the left clamping joint 41 and the right clamping joint 51; the spring 60 is able to drive the left lockpin 61 and the right lockpin 62 to reversely reset so as to be clamped with the left clamping joint 41 and the right clamping joint 51; the two ends of the spring 60 are respectively pressed on the left lockpin 61 and the right lockpin 62; 0 moreover, the left handle 631 and the right handle 641 extending out of the key slot 23 are respectively disposed on the left key 63 and the right key 64. The outer ends of the left lockpin 61 and the right lockpin 62 are respectively provided with the left stainless steel plate 65 and the right stainless steel plate 66; the outside edges of the left stainless steel plate 65 and the right stainless steel plate 66 are 5 respectively provided with the left bayonet 651 and the right bayonet 661 clamped with the left clamping joint 41 and the right clamping joint 51; moreover, the left annular clamping slot 411 and the right annular clamping slot 511 clamped with the left bayonet 651 and the right bayonet 661 are correspondingly disposed on the left clamping joint 41 and the right clamping joint 51. 20 During mounting, the left clamping hole 21 and the right clamping hole 22 on the hinge body 2 are respectively and correspondingly sheathed outside the left clamping joint 41 and the right clamping joint 51 on the left connecting piece 4 and the right connecting piece 5; the cover plate is the pressed downwards so that the hinge body 2 moves downwards; the left bayonet 651 and the right bayonet 661 on the left stainless steel 25 plate 65 and the right stainless steel plate 66 then slide through the spherical cambered surfaces at the upper ends of the left clamping joint 41 and the right clamping joint 51; the left lockpin 61 and the right lockpin 62 are driven to mutually slide close to each other along the coaxial direction in reaction to the force of the left clamping joint 41 and the right clamping joint 51 and the spring 60 is further compressed; when the hinge body 30 2 moves downwards to the set position, the left lockpin 61 and the right lockpin 62 are pushed to reset reversely due to the effect of tension of the spring 60; at that point, the left bayonet 651 and the right bayonet 661 on the left stainless steel plate 65 and the 6 right stainless steel plate 66 are flatly inserted into the left annular clamping slot 411 and the right annular clamping slot 511 on the left clamping joint 41 and the right clamping joint 51; the clamping of the flush toilet cover plate 1 is thus complete. When the cover plate 1 is to be taken out for cleaning or replacing, the left handle 631 5 and the right handle 641 are pressed manually so that the left key 63 and the right key 64 move close to each other along the coaxial direction; the left key 63 and the right key 64 then drive the left lockpin 61 and the right lockpin 62 to mutually slide close to each other so as to be separated from the left clamping joint 41 and the right clamping joint 51; the spring 60 is further compressed; at that point, the pressure on the left handle .0 631 and the right handle 641 is maintained and the cover plate 1 is lifted upwards to complete dismounting the cover plate 1. Therefore, the flush toilet cover plate 1 connecting structure with reasonable structure is convenient to mount and dismount. It will be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features [5 mentioned or evident from the text or drawings. All of these different combinations constitute various alternative aspects of the invention.