A DOOR-LOCK STOP DEVICE BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door-lock stop device, and 5 especially relates to a door-lock stop device with a number lock which is capable for changing the numbers. 2. Description of Related Art The general aluminum door and window includes an outer frame and at least two plate bodies. The outer frame has a bottom portion and 10 two parallel rails are arranged at the bottom portion for supporting each plate body to form a door and window structure. The structure is operated to open and close by sliding the plate bodies and the frame (bottom portion). For the using circumstances with safety concerns in opening (such as the door and window at high floor, the open extent of 15 the door and window must be limited. In order to limit the open extent, a door stop is arranged at the middle of the sliding path of the plate body and located at the bottom portion of the outer frame to stop the sliding plate body (with outer frame). It may prevent the door and window from opening over extent to result in dangers. 20 Please refer to FIG. 7, which is a perspective view of a conventional door stop. The door stop comprises a locking body 6. A locking rod 62 is vertically passing through the locking body 6 and 1 controlled by a key 61. When the key 61 is closed, the locking rod 62 is limited to fix. When the key 61 is opened, the locking rod 62 is released so that the locking rod 62 may be protruded to stop the plate body to prevent the door and window from opening over extent. 5 However, the key(s) must be carried with the user but easy to forget and lose to result in being unable to open and close. It is inconvenient for use. For now, many keys need to be carried to control various objects to open and close, such as the doors of the vehicles, offices, and 10 residences. The carry loading may be increased and the acceptability in the market may be decreased. Finally, once the key is lost, the use needs to make and buy a new one. And further the meaningless cost is increased. In view of the foregoing circumstances, the inventor has invested 15 a lot of time to study the relevant knowledge, compare the pros and cons, research and develop related products. After quite many experiments and tests, the "door-lock stop device" of this invention is eventually launched to improve the foregoing shortcomings, to meet the public use. 20 SUMMARY OF THE IN VENTION The disadvantages of the conventional door stop are that the key is easy to forget or lose so as to be unable to control the open and close 2 and inconveniently use, the carry loading for a user is increased and the acceptability in market is decreased, and further the meaningless cost is increased. How to solve the disadvantages is the main purpose of the present invention. 5 An object of this invention is providing a door-lock stop device. The user is not necessary to carry the additional key(s) to prevent from forgetting and losing to result in the inconvenient use. Another object of this invention is providing a door-lock stop device. The carry loading of the user is decreased and the acceptability 10 in the market is improved. One another object of this invention is providing a door-lock stop device. It may prevent the user from spending more money, such as making and buying a new key. In order to achieve above mentioned effects, a door-lock stop 15 device is provided. The door-lock stop device may comprise a housing, having a cavity with an opening, a plurality of wheel holes and a through hole are arranged at a bottom edge of the cavity, and a pressing hole is arranged at an outer wall of the cavity adjacent to the through hole for communicated with the cavity; a number lock assembly, 20 having a plurality of number wheel sets, a wheel shaft, and a spring, each number wheel set includes a number wheel and a convex wheel, the number wheel is arranged at one of the wheel holes and partially protruded from the housing, the convex wheel is arranged at a center of 3 the number wheel for being detented to change numbers, the wheel shaft has a sleeving section, a hooking section, and a pushing section, the pushing section is arranged between the sleeving section and the hooking section, one end of the sleeving section is passing through the 5 convex wheel of each number wheel set and exposed to the outside thereof, the spring is covered on the end of the sleeving section which is exposed, and the spring is elastically against the wheel shaft so as to make the hooking section protrude from the pressing hole; a bottom cover, covered at the opening of the cavity, a covering surface is 10 arranged at one side of the bottom cover corresponding to the cavity, a guiding sleeve is arranged at the covering surface, and the guiding sleeve is corresponding to the through hole; and a locking rod, having a convex ring groove and a retrieving ring groove, the locking rod is inserted into and assembled to the through hole, the hooking section, 15 and the guiding sleeve and capable for shifting in the housing, the convex ring groove and the retrieving ring groove are covered on the hooking section in turn so that the locking rod is moved forward to protrude or backward to draw back relative to the housing; wherein each number wheel set is turned to correct numbers to be in a unlock 20 status, the hooking section of the wheel shaft is pressed to release the locking rod, and further the hooking section is deeply pressed, the convex wheel of each number wheel set is pushed by the pushing section of the wheel shaft to separate from each number wheel to 4 change the number setting of the number wheel. In some embodiments, a spring groove is formed in the cavity for fastening the spring, the sleeving section of the wheel shaft has a plurality of ring grooves and a longitudinal groove, the number of the 5 ring grooves is equal to the number of the convex wheels, the longitudinal groove is communicated with each ring groove, each of the convex wheel has a sleeving hole with an inner convex portion, the longitudinal groove of the sleeving section is assembled to the inner convex portion of the sleeving hole of each convex wheel, the inner 10 convex portion of the sleeving hole of each convex wheel is arranged in the ring grooves and then turned to misalign with the longitudinal groove to be in a lock status or correspond to the longitudinal groove to be in the unlock status. In some embodiments, the hooking section of the wheel shaft is a 15 hollow frame body, one end of the hooking section connected with the pushing section is formed a concave arc hooking portion, a pressing convex portion is arranged at the hooking section, the spring is elastically against the wheel shaft so that the pressing convex portion is pushed out of the pressing hole. 20 In some embodiments, a spring fixing plate is further arranged at the covering surface of the bottom cover corresponding to the spring groove, a plurality of wheel grooves is further arranged between the guiding sleeve and the spring fixing plate, and an elastic member is 5 further arranged at the covering surface of the bottom cover, the elastic member has a plurality of elastic plates corresponding to each wheel groove, and each elastic plate is elastically against corresponding number wheel and partially protruded from the wheel hole. 5 In some embodiments, a plurality of threading holes is formed at the opening of the cavity, and a plurality of connection holes is arranged at the covering surface of the bottom cover corresponding to the threading holes of the opening of the cavity, and further the numbers arranged at a peripheral of the number wheel of each number 10 wheel set is arranged in a ring. The various objectives and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing. BRIEF DESCRIPTION OF THE DRAWINGS 15 FIG. 1 is an exploded view of a door-lock stop device of the present invention; FIG. 2 is a partial exploded view of the door-lock stop device of the present invention; FIG. 3 is a cross-sectional view of the door-lock stop device of 20 the present invention; FIG. 4 is a perspective view of the door-lock stop device of the present invention; 6 FIG. 5 is an operational view of the door-lock stop device of the present invention while the locking rod is released; FIG. 6 is an operational view of the door-lock stop device of the present invention while the convex wheel is pushed out to release the 5 number wheel; and FIG. 7 is a perspective view of a conventional door stop. DETAILED DESCRIPTION OF THE INVENTION To describe clearly that the present invention achieves the foregoing objective and function, the technical features and desired 10 function are described with reference to a preferred embodiment and accompanying drawings. Please reference to FIGs. 1 to 4, a door-lock stop device of the present invention comprises a housing 1, a number lock assembly 2, a bottom cover 3, and a locking rod 4. 15 The housing 1 has a cavity 11 with an opening 111. A plurality of wheel holes 12 and a through hole 13 are arranged at a bottom edge of the cavity 11. A pressing hole 14 is arranged at an outer wall of the cavity 11 which is adjacent to the through hole 13 for communicated with the cavity 11. 20 The number lock assembly 2 has a plurality of number wheel sets 22, a wheel shaft 21, and a spring 23. Each number wheel set 22 further includes a number wheel 221 and a convex wheel 22. The number wheel 221 is arranged at one of the wheel holes 12 and 7 partially protruded from the housing 1. The convex wheel 222 is arranged at a center of the number wheel 221 for being detented to change numbers. The wheel shaft 21 has a sleeving section 211, a hooking section 213, and a pushing section 212. The pushing section 5 212 is arranged between the sleeving section 211 and the hooking section 213. One end of the sleeving section 211 is passing through the convex wheel 222 of each number wheel set 22 and exposed to the outside thereof. The spring 23 is covered on the end of the sleeving section 211 which is exposed. And the spring 23 is elastically against 10 the wheel shaft 21 so as to make the hooking section 213 protrude from the pressing hole 14. The bottom cover 3 is covered at the opening 111 of the cavity 11. A covering surface 31 is arranged at one side of the bottom cover 3 which corresponds to the cavity 11. A guiding sleeve 32 is arranged at 15 the covering surface 31 to correspond to the through hole 13. The locking rod 4 has a convex ring groove 41 and a retrieving ring groove 42. The locking rod 4 is inserted into and assembled to the through hole 13, the hooking section 213, and the guiding sleeve 32 and capable for shifting in the housing 1. The convex ring groove 41 20 and the retrieving ring groove 42 are covered on the hooking section 213 in turn so that the locking rod 4 is moved forward to protrude or backward to draw back relative to the housing 1. Each number wheel set 22 is turned to correct numbers to be in a 8 unlock status. The hooking section 213 of the wheel shaft 21 is pressed to release the locking rod 4. And further the hooking section 213 is deeply pressed so that the convex wheel 222 of each number wheel set 22 is pushed by the pushing section 212 of the wheel shaft 21 to 5 separate from each number wheel 221 to change the number setting of the number wheel 221. In FIG. 1, a spring groove 15 is formed in the cavity 11 for fastening the spring 23. The sleeving section 211 of the wheel shaft 21 has a plurality of ring grooves 216 and a longitudinal groove 217. The 10 number of the ring grooves 216 is equal to the number of the convex wheels 222. The longitudinal groove 217 is communicated with each ring groove 216. Each of the convex wheel 222 has a sleeving hole 223 with an inner convex portion 224. The longitudinal groove 217 of the sleeving section 211 is assembled to the inner convex portion 224 of 15 the sleeving hole 223 of each convex wheel 222. The inner convex portion 224 of the sleeving hole 223 of each convex wheel 222 is arranged in the ring grooves 216 and then turned to misalign with the longitudinal groove 217 to be in a lock status or correspond to the longitudinal groove 217 to be in the unlock status. A plurality of 20 threading holes 112 is formed at the opening 111 of the cavity 11. A plurality of connection holes 36 is arranged at the covering surface 31 of the bottom cover 3 which corresponds to the threading holes 112 of the opening 111 of the cavity 11. Besides, a plurality of screws A is 9 passing through corresponding connection holes 36 and screwed with corresponding threading holes 112. The hooking section 213 of the wheel shaft 21 is a hollow frame body. One end of the hooking section 213 which is connected with the pushing section 212 is formed a 5 concave arc hooking portion 214. A pressing convex portion 215 is arranged at the hooking section 213. The spring 23 is elastically against the wheel shaft 21 so that the pressing convex portion 215 is pushed out of the pressing hole 14. And further the numbers which are arranged at a peripheral of the number wheel 221 of each number 10 wheel set 22 is arranged in a ring. In addition, a spring fixing plate 33 is further arranged at the covering surface 31 of the bottom cover 3 which corresponds to the spring groove 15. A plurality of wheel grooves 34 is further arranged between the guiding sleeve 32 and the spring fixing plate 33. And an elastic member 35 is further arranged at 15 the covering surface 31 of the bottom cover 3. The elastic member has a plurality of elastic plates 351 which correspond to each wheel groove 34. Each elastic plate 351 is elastically against corresponding number wheel 221 and partially protruded from the wheel hole 12. Please refer to FIGs. 2 and 3, the sleeving section 211 of the 20 wheel shaft 21 is passing through the convex wheel 222 of each number wheel set 22 and covered on the spring 23. The spring 23 is assembled to the spring groove 15 to be compressed. The pressing convex portion 215 of the hooking section 213 of the wheel shaft 21 is 10 pressed into the cavity 11 and corresponding to the pressing hole 14. The spring 23 is elastically against the wheel shaft 21 so that the pressing convex portion 215 is pushed out of the pressing hole 14. The guiding sleeve 32 of the bottom cover 3 is corresponding to the through 5 hole 13 and the covering surface 31 is covered on the opening 111 of the cavity 11 so that each connection hole 36 is corresponding to the opening 111 of the cavity 11 and each threading hole 112 and fastened by the screws A. Based on the structure, when the number wheel 221 of the number wheel set 22 is tuned to the correct numbers to be in the 10 unlock status, the wheel shaft 21 is pressed so that the pushing section 212 is pushed the convex wheel 222 of each number wheel set 22 to separate from each number wheel 221 to change the number setting of the number wheel 221. Finally, the locking rod 4 is passing through and assembled to the through hole 13, the hooking section 213, and the 15 guiding sleeve 32 and capable for shifting in the housing 1 (shown as in FIG. 4). As above mentioned, the convex ring groove 41 and the retrieving ring groove 42 are covered on the hooking section 213 in turn so that the locking rod 4 is controlled by the number lock 20 assembly 2 to move forward to protrude or backward to draw back relative to the housing 1 for providing the limitation and stop of the door 5 or window. Please refer to FIG. 5, which is an operational view of the 11 door-lock stop device of the present invention while the locking rod 4 is released. The locking rod 4 and the number lock assembly 2 are assembled in the housing 1 and the bottom cover 3 so that the locking rod 4 is controlled by the number lock assembly 2 to move forward to 5 protrude and backward to draw back. When the convex ring groove 41 of the locking rod 4 is covered and limited by the hooking section 213, the locking rod 4 is moved forward to protrude relative to the housing 1 for providing the limitation and stop of the door 5 while slidably opening. And when the number wheel 221 of each number wheel set 10 22 is turned to the correct number, shown as the thick arrow in FIG. 5, the pressing convex portion 215 of the wheel shaft 21 is pressed so that the concave arc hooking potion 214 of the hooking section 213 is separated from the convex ring groove 41 to release the locking rod 4. Therefore, the locking rod 4 is controlled to protrude outwardly for 15 providing limitation or draw back for unlock. A user may not carry the additional key(s) to prevent the key(s) from losing to result in inconvenient use. Please refer to FIG. 6, which is an operational view of the door-lock stop device of the present invention while the convex wheel 20 222 is pushed out to release the number wheel 221. When the pressing convex portion 215 of the hooking section 213 of the wheel shaft 21 is continuously pressed, shown as the thick arrow, the convex wheel 222 of each number wheel set 22 is pushed to the outside of the number 12 wheel 221 by the pushing section 212 and the number wheel 221 is released to change the number setting of the number wheel 21 (shown as the thin dashed line in FIG. 6). Furthermore, it may prevent the user from spending more money, such as making and buying a new key. 5 In conclusion, the door-lock stop device of the present invention has the number lock assembly 2 which includes a plurality of number wheel sets 22, the wheel shaft 21, and the spring 23 to control the locking rod 4 to move forward to protrude or backward to draw back. The user is not necessary to carry the additional key(s) and then the 10 acceptability in the market may be improved. And further it may prevent the user from spending more money, such as making and buying a new key. The foregoing descriptions are merely the exemplified embodiments of the present invention, where the scope of the claim of 15 the present invention is not intended to be limited by the embodiments. Any equivalent embodiments or modifications without departing from the spirit and scope of the present invention are therefore intended to be embraced. The disclosed structure of the invention has not appeared in the 20 prior art and features efficacy better than the prior structure which is construed to be a novel and creative invention, thereby filing the present application herein subject to the patent law. 13