as shown in fig1 and 2 , a pet grooming comb 10 in accordance with a preferred embodiment of the present invention comprises a grip 20 , two decorative boards 30 and 32 , and a comb head 40 . the grip 20 has a housing 50 and a shaft 60 . the housing 50 has a head portion 52 , a body portion 54 , a first concavity 522 at each of top and bottom sides of the head portion 52 for accommodation of a user &# 39 ; s thumb or forefinger , a second concavity 542 at a top side of the body portion 54 , and a third concavity 544 at a bottom side of the body portion 54 . the housing 50 has an inner cambered surface 562 at an inner periphery thereof , and an inner plane 564 opposite to the inner cambered surface 562 , as shown in fig4 . further , the body portion 54 has a first outer through hole 546 penetrating through top and bottom sides of the body portion 54 in communication with the second concavity 542 and the third concavity 544 and the shaft hole , and two second outer through holes 548 penetrating through the top side of the body portion 54 in communication with the second concavity 542 and the shaft hole and located at places corresponding to two opposite sides of the first outer through hole 546 . in addition , a junction of the head portion 52 and the body portion 54 is inwardly shrunken to form two opposite inwardly curved surfaces 56 , and a plurality of anti - slip blocks 58 are spacedly provided at each of the curved surfaces 56 and arranged in a straight manner from the head portion 52 to the body portion 54 for providing a skidproof effect . the shaft 60 has an outer cambered surface 602 , an outer plane 604 opposite to the outer cambered surface 602 , an inner through hole 62 penetrating through top and bottom sides thereof , and two mounting holes 64 recessed from the top side thereof . the shaft 60 is inserted into the housing 50 in such a manner that the inner through hole 62 and the mounting holes 64 are respectively aligned with the first outer through hole 546 and the second outer through holes 548 , and the outer cambered surface 602 and the outer plane 604 are respectively abutted against the inner cambered surface 562 and the inner plane 564 , resulting in that the shaft 60 is not rotatable relative to the housing 50 randomly . further , the shaft 60 has eight first coupling portions 66 , which are recesses in this embodiment , equiangularly , spacedly and circularly arranged at a periphery thereof around a longitudinal axis of the shaft 60 . the decorative board 30 has a first post 302 inserted in the first outer through hole 546 of the housing 50 and the inner through hole 62 of the shaft 60 , and two second posts 304 respectively inserted in the second outer through holes 548 of the housing 50 , and the mounting holes 64 of the shaft 60 such that the decorative board 30 is accommodated in the second concavity 542 , as shown in fig2 and 5 . the decorative board 32 has a third post 322 inserted in the first post 302 of the decorative board 30 through the first outer through hole 546 and the inner through hole 62 such that the decorative board 32 is accommodated in the third concavity 544 , as shown in fig6 . as a result , the shaft 60 can not move along an axial direction of the housing 50 due to the engagement of the decorative boards 30 and 32 , and patterns or trademarks can be designed on the decorative boards 30 and 32 according to the user &# 39 ; s need . as shown in fig7 and 8 , the comb head 40 has a comb bar 42 and a comb plate 44 . the comb bar 42 has a first end 422 of a tubular form provided at an inner periphery thereof with a second coupling portion 46 , which is a protrusion in this embodiment and selectively insertable into one of the first coupling portions 66 , i . e ., recesses , of the shaft 60 such that the comb bar 42 can be set to one of eight angles relative to the grip 20 , as shown in fig3 and 10 , a second end 424 , and an insertion groove 426 extending from the second end 424 toward the first end 422 . the comb plate 44 has a base portion 441 , a block 48 at a distal end of the base portion 441 , two dots 482 respectively provided at two opposite sides of the base portion 441 and adjacent to the block 48 , and a plurality of teeth 443 rotatably mounted on the base portion 441 . the comb plate 44 is fitted to the comb bar 42 in such a way that the base portion 441 is inserted into the insertion groove 426 until the block 48 is abutted against the second end 424 of the comb bar 42 , and the dots 482 are stopped against a periphery of the insertion groove 426 . by the aforesaid design , when the user would like to adjust the angle of the comb head 40 relative to the grip 20 , the user can draw the comb bar 42 away from the shaft 60 of the grip 20 to make the second coupling portion 46 , i . e . protrusion , leave away from one of the first coupling portions 66 , i . e . recesses , and then reinsert the second coupling portion 46 , i . e . protrusion , of the comb bar 42 into another first coupling portion 66 , i . e . recess , of the shaft 60 of the grip 20 according to the user &# 39 ; s need , as shown in fig9 and 10 . as a result , the comb head 40 is rotatable and fixable to a specific angle relative to the grip 20 to enable the user to comb the pet &# 39 ; s hair effortlessly . further , when holding the grip 20 , the user can hold the body portion 54 of the housing 50 to exert a force or place a thumb or forefinger on either of the concavities 522 of the top and bottom sides of the head portion 52 of the housing 50 for enabling the user to operate the grip 20 more comfortably and effortlessly due to its ergonomic design . in addition , because of the 360 - degree rotatable teeth 443 , the pet &# 39 ; s hair won &# 39 ; t be knotted ; moreover , when the user would like to change different type of teeth 443 , the user can draw the base portion 441 of the comb plate 44 away from the insertion groove 426 of the comb bar 42 to detach the comb plate 44 from the comb bar 42 , and then insert a new comb plate , such as the comb plate denoted by reference numeral 70 in fig1 , that has different kind of teeth into the insertion groove 426 of the comb bar 42 . as shown in fig1 , the teeth 72 of the comb plate 70 each have a sphere 74 at a distal end thereof to increase the contact area between each one of the teeth 72 and the pet &# 39 ; s hair . fig1 shows another comb plate 90 that has double rows of tapered teeth 92 to prevent the pet &# 39 ; s hair from knotting . certainly , the pet grooming comb of the present invention can be made with various kinds of design on the basis of the spirit of the present invention . for example , the first concavity is not necessary to be formed on each of the top and bottom sides of the head portion . it can be formed on either of the top and bottom sides of the head portion . further , the body portion of the housing and the shaft can be respectively provided with one or more second outer through holes and mounting holes , or even the arrangement of the second outer through holes and the mounting holes can be eliminated . besides , the first coupling portions of the grip and the second coupling portion of the comb head can be exchanged but not limited to the above - mentioned embodiment . in other words , the first coupling portions can be designed to be provided at the comb bar of the comb head , and the second coupling portion can be designed to be provided at the shaft of the grip . further , the shaft can be eliminated if the recesses are directly formed on the periphery of the shaft hole of the housing . the invention being thus described , it will be obvious that the same may be varied in many ways . such variations are not to be regarded as a departure from the spirit and scope of the invention , and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims .
a pet grooming comb includes a grip having a plurality of first coupling portions circularly arranged around a longitudinal axis thereof and a comb head having a plurality of teeth and a second coupling portion selectively coupled to one of the first coupling portions . thus , a user can adjust a setting angle of the comb head relative to the grip by means of the engagement of one of the first coupling portions of the grip with the second coupling portion of the comb head , thereby enhancing convenience of use .