TWM501332U - Ratchet wrench structure - Google Patents

Description

Ratchet wrench structure

The present invention relates to a ratchet wrench structure, in particular to a second recess of a ratchet wrench structure body having a groove for making the second cavity have rotational toughness when rotated.

As previously known by us, the conventional ratchet wrench construction, such as US Patent Application No.: 10/828315, certificate number: 7121170, Taiwan Patent Application No.: 093200216, certificate number: M254305, patent name: ratchet wrench dialing structure, The patented structure is: a dialing structure of a ratchet wrench, the ratchet wrench is mainly formed with a larger head 51 at the end of a handle 50, and a head 60 and a ratchet block are accommodated in the head 51. 65, the ratchet block 65 is moved by a dial structure of the dial block 70; the dial block 70 of the dial structure is formed with a corresponding slot 71 corresponding to the ratchet block 65, and the dial block 70 is further disposed. A positioning piece 75 is provided in the slot 71. The positioning piece 75 is formed with two upper and lower corresponding slots 76 in the center of the rear portion of the positioning piece 75, and a guide piece 77 is formed between the two slots 76 for positioning. The sheet 75 can be sleeved with a top spring 78 so that the positioning piece 75 can be stably supported on the ratchet block 65; thereby forming a dial structure with a smooth and well-positioned ratchet wrench. By.

However, the missing structure of this conventional ratchet wrench is:

1. Please be accompanied by the third figure in the US Bulletin or the Taiwan Gazette. The swivel torque of the tool head 60 is received by the ratchet block 65, and the swivel torque of the ratchet block 65 is fully absorbed by the ratchet groove 53. Because the ratchet groove 53 has a full arc shape, the ratchet groove 53 has no other release space when subjected to the torque, that is, the The ratchet groove 53 is only steel, and the ratchet groove 53 is deformed by the torsion force. After the ratchet groove 53 is deformed, the overall torsion force is greatly reduced, and the spine 65 is on the spine of the head 51. When the block groove 53 is displaced to the left and right, if the ratchet groove 53 is worn and deformed, the meshing of the ratchet block 65 with the tool bit 60 is extremely unreliable.

2. Please attach the fifth and sixth figures of the Taiwan Gazette or the fifth and sixth figures of the US Gazette. The intersection of the ratchet groove 53 and the dial block 54 is an intersection. When there is only one width, when the positioning piece 75 is rotated by the dial pocket 54, the rotation angle of the positioning piece 75 is limited by the width, the rotation angle of the positioning piece 75 is small, and the rotation angle of the positioning piece 75 is too small. When the ratchet block 65 retracts at the spine groove 53, the ratchet block 65 easily rotates the positioning piece 75 to automatically switch the positive reversal of the ratchet wrench.

In view of the lack of the above-mentioned conventional ratchet wrench structure, the creator has been engaged in the manufacturing experience of related industries for many years, and finally has a product that can solve the drawbacks of the ratchet wrench structure.

The ratcheting groove of the conventional ratchet wrench has a curved surface shape, and the spine groove system is only steel and has no toughness. The spine groove has a lack of deformation when it is rotated, and the creation system is related to a ratchet wrench structure. In particular, a second recess of the ratchet wrench structure body is provided with a groove, the groove is such that the second cavity has a rotational toughness, and the second cavity is not easily deformed.

A ratchet wrench structure, comprising: a body, the system is provided with a first receiving groove, the first receiving groove has a circular groove shape, and the first receiving groove has a diameter and an axial center, The first receiving groove is formed in a through-groove shape, and the first receiving groove is provided with a second receiving groove at a side of the handle, the first receiving groove is in communication with the second receiving groove, and the second receiving groove is The system is provided with at least one groove, the groove is a circular groove shape, the second cavity is provided with a first diameter, the groove is provided with a second diameter, and the second cavity has a first At a height, the groove has a second height.

When the second pocket of the body is subjected to the rotating torque, the second pocket is deformed, and the deformation of the second pocket is absorbed by the groove, that is, the groove is such that the second pocket has Toughness and rigidity make this system have the best rotational torque and maximum service life.

In order to enable the members of the Board and those skilled in the art to fully understand the effects of this creation, the structure and composition of the creation are described in conjunction with the drawings and drawings, but the following are only used to explain the implementation of this creation. For example, it is not intended to impose any form of restriction on this creation. Any modification made in the spirit of this creation should still fall within the scope of this creation.

10‧‧‧ Ontology

11‧‧‧First slot

12‧‧‧Second capacity

121‧‧‧ Groove

122‧‧‧First diameter

123‧‧‧Second diameter

124‧‧‧First height

125‧‧‧second height

126‧‧‧Chamfering

129‧‧‧ pivot slot

13‧‧‧ third cavity

14‧‧‧First ring groove

15‧‧‧First width

16‧‧‧second width

17‧‧‧ steering angle

20‧‧‧ratchet

21‧‧‧First tooth

22‧‧‧ Included

23‧‧‧Second ring groove

24‧‧‧Rotary Department

30‧‧‧ teeth

31‧‧‧Second tooth

32‧‧‧ concave arc slot

40‧‧‧Control unit

41‧‧‧ dial

411‧‧‧Capacity

412‧‧‧ top surface

42‧‧‧Card parts

43‧‧‧Flexible components

50‧‧‧ buckle

60‧‧‧ cover

The first figure is a perspective view of the structural body of the ratchet wrench.

The second figure is a top view of the structure of the ratchet wrench structure.

The third figure is an exploded view of the structure of the ratchet wrench.

The fourth figure is a three-dimensional combination diagram of the ratchet wrench structure.

The fifth figure is a side view of the structure of the ratchet wrench.

The sixth figure is a cross-sectional view of the ratchet wrench structure B-B.

The seventh figure is a perspective view of the body of the second embodiment of the ratchet wrench structure.

The eighth figure is a perspective view of the body of the third embodiment of the ratchet wrench structure.

The ninth drawing is a top view of the body of the third embodiment of the ratchet wrench structure.

The tenth figure is a perspective view of the body of the fourth embodiment of the ratchet wrench structure.

11 is a top view of the body of the fourth embodiment of the ratchet wrench structure.

Figure 12 is a perspective view of the body of the fifth embodiment of the ratchet wrench structure.

Figure 13 is a perspective view of the body of the sixth embodiment of the ratchet wrench structure.

Figure 14 is a perspective view of the body of the seventh embodiment of the ratchet wrench structure.

The fifteenth figure is a perspective view of the body of the eighth embodiment of the ratchet wrench structure.

Figure 16 is a top view of the body of the eighth embodiment of the ratchet wrench structure.

Figure 17 is a perspective exploded view of a ninth embodiment of the ratchet wrench structure.

First, please refer to the first figure and the second figure. The first picture is a perspective view of the structure of the ratchet wrench structure body 10, and the second picture is a top view of the structure of the ratchet wrench structure body 10. The present invention relates to a ratchet wrench structure. The main body 10 is provided with a first receiving groove 11 , and the first receiving groove 11 has a circular groove shape, and the first receiving groove 11 has a diameter and an axial center. The first receiving groove 11 is formed in a through-groove shape, and the first receiving groove 11 is provided with a second receiving groove 12 at a side of the handle portion, and the first receiving groove 11 is in communication with the second receiving groove 12 . The center of the second pocket 12 is disposed in the range of the first pocket 11 , the diameter of the second pocket 12 is smaller than the first pocket 11 , and the second pocket 12 is provided with at least one groove. 121, the groove 121 is a circular groove shape, the second cavity 12 is provided with a first diameter 122, the groove 121 is provided with a second diameter 123, the groove 121 and the second cavity 12 Having the same center, the first diameter 122 and the second diameter 123 have the same center, the first diameter 122 is smaller than the second diameter 123, and the second diameter 123 is greater than the first The diameter 122 is between about 2:00 and MM, and the second receptacle 12 has a first height 124. The recess 121 has a second height 125, and the value between the second height 125 and the first height 124 The ratio is between one-half and one-sixth, and the groove 121 is at least one side The chamfering portion 126 is provided with a chamfered portion 126 on both sides, and a third pocket 13 is disposed on the side of the second pocket 12 near the handle, and the third recess 13 is The first receiving groove 11 , the second receiving groove 12 and the third receiving groove 13 are in a synchronous manner, and the third receiving groove 13 and the third receiving groove 13 are in a synchronous manner. The third receiving groove 13 is open at least at one end, and the third receiving groove 13 has a smaller diameter than the second receiving groove 12. The main body 10 is provided with a first annular groove 14 which is The intersection between the second receiving groove 12 and the third receiving groove 13 is a first width 15 at a lower portion of the receiving groove 11, and the intersection between the groove 121 and the third receiving groove 13 is a second width 16 The first width 15 is less than the second width 16.

Continuing to refer to the third figure, the third figure is an exploded perspective view of the ratchet wrench structure, which includes a ratchet 20 pivotally disposed in the first pocket 11 of the body 10, the ratchet The outer peripheral edge of the 20 is provided with a first tooth portion 21 of an annular array of teeth. The center of the ratchet wheel 20 is provided with a set of fitting portions 22, and the sleeve portion 22 has a polygonal groove shape, and the sleeve portion 22 can be fitted with a screw. The fitting portion 22 is formed in a through-groove shape, and a second annular groove 23 having a smaller diameter is disposed under the ratchet wheel 20, and the second annular groove 23 is opposite to the first annular groove 14 and the ratchet 20 is opposite. There is a rotating portion 24, the diameter of the rotating portion 24 is larger than the diameter of the ratchet 20, the rotating portion 24 is exposed outside the body 10, the rotating portion 24 is for the user to rotate; 30. The tooth 30 is received on the inner side of the second pocket 12 of the body 10. The tooth 30 is vertically displaceable in the second pocket 12. The front side of the tooth 30 is provided with a plurality of rows. The second tooth portion 31 is engaged with the first tooth portion 21 of the ratchet wheel 20, and a concave arc groove 32 is formed on the rear side of the tooth tooth 30, and the concave arc groove 32 has a concave shape. The concave arc The control unit 40 is pivotally disposed in the third pocket 13 of the body 10, and the control unit 40 is adapted to rotate the user to control the tooth 30. Left and right displacement in the second pocket 12 And controlling the forward and reverse rotation of the ratchet wrench, the control unit 40 includes: a button 41, a clamping member 42 and an elastic member 43; the button 41 is provided with a cylindrical block, and the cylindrical block is pivoted on the The height of the cylinder block is the same as or smaller than the height of the third pocket 13 in the third pocket 13 of the body 10. The cylindrical block is provided with a magazine 411, and the rack 411 is provided. The top of the cylindrical block is formed in a circular shape. The top surface 412 is formed in a planar shape. The top surface 412 is abutted against the rotating portion 24 of the ratchet 20, so that the button 41 is received. The dialing portion 41 is convexly provided with a dialing portion for the user to manually move, and the dialing portion is exposed outside the body 10, and is not limited to the outside of the body. The latching portion is abutted against the end surface of the body 10; the latching member 42 is a cap-like shape, and the latching member 42 is received in the magazine slot 411 of the dial 41. The latching member 42 The elastic member 43 is received in the elastic groove 411 of the dial 41, and one end of the elastic member 43 is elastically abutted on the clamping member 42. Piece 42 is subject to elastic element The elastic top of the 43 is offset from the concave arc groove 32 of the tooth 30; a buckle 50 is formed in a C-shaped ring shape, and the buckle 50 is received in the first ring groove 14 of the body 10 and In the second annular groove 23 of the ratchet 20, the ratchet 20 is pivoted in the first receiving groove 11.

Please refer to the fourth figure. The fourth figure is a three-dimensional combination diagram of the ratchet wrench structure. As shown in the figure, the ratchet 20 is pivotally disposed in the first pocket 11 of the body 10. The movement portion 24 is slidably disposed outside the body 10, and the teeth 30 are received in the second housing 12 of the body 10. The control unit 40 is disposed in the third housing 13, and the button 41 is disposed. A toggle portion is provided for the user to control the forward and reverse rotation of the ratchet wrench, and the dial portion is exposed outside the body 10, and the dial portion abuts against the end surface of the body 10, the buckle 50 The first ring groove 14 and the second ring groove 23 of the ratchet wheel 20 are disposed in the first groove 11 of the body 10, and the rotating portion 24 is pivotally disposed in the first groove 11 of the body 10. It is pressed onto the top surface 412 of the dial 41 so that the control unit 40 does not come out of the third receptacle 13 of the body 10.

Please continue to refer to the fifth and sixth figures. The fifth drawing is a side view of the structure of the ratchet wrench. The sixth drawing is a cross-sectional view of the 275 of the ratchet wrench structure. When controlling the forward and reverse rotation of the ratchet wrench, the clamping member 42 is opposite to the groove 121, and the intersection between the groove 121 and the third receiving groove 13 is provided with a second width 16, the axis of the body 10 A steering angle 17 is disposed between the clamping member 42 and the locking member 42 is movably received in the recess 121 to increase the value of the steering angle 17. The recess 121 increases the steering when the control unit 40 rotates. Angle 17.

Referring to the seventh figure, the seventh figure is a perspective view of the body 10 of the second embodiment of the ratchet wrench structure. In this embodiment, the second housing 12 of the body 10 is clearly shown in the figure. A plurality of grooves 121 are provided, and the number of the grooves 121 is two, and the plurality of grooves 121 are parallel.

Please refer to the eighth and ninth figures. The eighth figure is a perspective view of the body 10 of the third embodiment of the ratchet wrench structure. The ninth figure is a top view of the body 10 of the third embodiment of the ratchet wrench structure. In this embodiment, the groove 121 in the second receiving groove 12 is disposed at the third receiving groove 13 , and the center of the groove 121 is away from the first receiving groove 11 than the center of the second receiving groove 12 . The second diameter 123 of the groove 121 may be equal to, greater than, or smaller than the first diameter 122 of the second pocket 12.

Please refer to the tenth and eleventh drawings. The tenth figure is a perspective view of the body 10 of the fourth embodiment of the ratchet wrench structure. The eleventh figure is the body of the fourth embodiment of the ratchet wrench structure. View, in this embodiment, the groove 121 in the second pocket 12 is disposed near the first pocket 11 , and the center of the groove 121 is farther away from the third pocket than the center of the second pocket 12 The center of the center of the groove 121 may be equal to, greater than, or smaller than the first diameter 122 of the second pocket 12.

Please continue to refer to the twelfth figure, the twelfth figure is the structure of the ratchet wrench A perspective view of the body 10 of the fifth embodiment. In this embodiment, the second recess 12 of the body 10 is provided with a plurality of recesses 121. The number of the recesses 121 is two, and the plurality of recesses 121 are Parallel to each other, the two grooves 121 are located at the two end faces of the second cavity 12, that is, the maximum distance between the two grooves 121.

Referring to the thirteenth embodiment, the thirteenth embodiment is a perspective view of the body 10 of the sixth embodiment of the ratchet wrench structure. In this embodiment, the second housing 12 of the body 10 is provided with a recess 121. The third recess 13 is provided with another recess 121. The two recesses 121 are in a communicating manner, and the two recesses 121 are provided with the same width. The recess 121 disposed at the third recess 13 is associated with the recess 121. The third pockets 13 have the same axis.

Please refer to FIG. 14 , which is a perspective view of the body 10 of the seventh embodiment of the ratchet wrench structure. In this embodiment, as clearly shown, the groove 121 is At the third pocket 13 of the body 10, the recess 121 has the same axis as the third pocket 13.

Please refer to the fifteenth and sixteenth drawings. The fifteenth figure is a perspective view of the body 10 of the eighth embodiment of the ratchet wrench structure. The sixteenth embodiment is the body of the eighth embodiment of the ratchet wrench structure. The top view, in this embodiment, as clearly shown in the figure, the body 10 is a large eight-handed hand, and the first pocket 11 and the second pocket 12 of the body 10 are of the same diameter. In the shape of a circular groove, the first receiving groove 11 and the second receiving groove 12 are in a communicating manner, and the second receiving groove 12 is provided with a plurality of pivot grooves 129 near the shank, and the number of the pivot grooves 129 is two The pivoting groove 129 is formed in a straight groove shape parallel to each other. The groove 121 is disposed at the pivot groove 129. The groove 121 and the pivot groove 129 are perpendicular to each other.

Please refer to FIG. 17 , which is a perspective exploded view of the ninth embodiment of the ratchet wrench structure. In this embodiment, as shown clearly, the body 10 is a small one. The eight-handed hand, the sleeve portion 22 of the ratchet 20 is in the shape of a convex quadrangular head, and the tooth 30 is A horn tooth is provided with a cover 60 that fits the shape of the first pocket 11 and the second pocket 12 of the body 10.

The basic structure of the ratchet wrench may have various structures that cannot be detailed. For example, the basic structure of the three ratchet wrenches has been listed in the present invention, as shown in the first figure, the fifteenth figure and the seventeenth figure, and thus the second in the body 10. The provision of the groove 121 at the cavity 12 or the third cavity 13 should be protected by the present invention.

The main principle of the present invention is that the second cavity 12 of the body 10 is provided with a groove 121, and the groove 121 has a rotational toughness at the second cavity 12, and each dimension of the design is concave. The relationship between the position of the groove 121 relative to the second pocket 12, the relationship between the first diameter 122 and the second diameter 123, and the relationship between the first height 124 and the second height 124, such that the rigidity and toughness of the second tank 12 The best balance between the two is achieved, so that the body 10 is rotated with the best rotational torque and maximum service life.

The advantages of this ratchet wrench structure are:

1. When the second pocket 12 of the body 10 is subjected to a rotational torque, the second pocket 12 is deformed, and the amount of deformation of the second pocket 12 can be absorbed by the recess 121, that is, the recess 121 The second tank 12 has toughness and rigidity, so that the body 10 has the best rotational torque and maximum service life when it is rotated.

2. The clamping member 42 of the control unit 40 can be opposite to the recess 121 of the body 10. The intersection between the recess 121 and the third receiving slot 13 has a second width 16, and the central axis of the body 10 is A locking angle 17 is disposed between the clamping members 42. The locking member 42 can be accommodated in the recess 121 when the steering member 42 is turned, so that the value of the steering angle 17 can be increased, that is, the recess 121 is used to control the control unit. When the 40 is rotated, the steering angle 17 is increased.

Therefore, the ratchet wrench structure of this creation has industrial utilization, novelty and progress, and can meet the application requirements of the new patent, and apply in accordance with the law.

10‧‧‧ Ontology

11‧‧‧First slot

12‧‧‧Second capacity

121‧‧‧ Groove

124‧‧‧First height

125‧‧‧second height

126‧‧‧Chamfering

13‧‧‧ third cavity

14‧‧‧First ring groove

Claims (17)

A ratchet wrench structure, comprising: a body, the system is provided with a first receiving groove, the first receiving groove has a circular groove shape, and the first receiving groove has a diameter and an axial center, The first receiving groove is formed in a through-groove shape, and the first receiving groove is provided with a second receiving groove at a side of the handle portion, and the first receiving groove is in communication with the second receiving groove, and the second receiving groove is at the second receiving groove At least one groove is formed, the groove is a circular groove shape, the second cavity is provided with a first diameter, the groove is provided with a second diameter, and the second cavity has a first Height, the groove is tied to the second height. The ratchet wrench structure of claim 1, wherein a ratchet wheel is disposed in the first receiving groove of the body, and the outer peripheral edge of the ratchet is provided with a first tooth portion of the annular array of teeth; The toothing system is disposed at a second pocket of the body, and the front side of the toothing is provided with a plurality of second tooth portions arranged to mesh with the first tooth portion of the ratchet. The ratchet wrench structure of claim 2, wherein the center of the second pocket is disposed within a range of the first pocket, the diameter of the second pocket is smaller than the first pocket, and the second pocket A third pocket is disposed at a side of the shank, and the third pocket is formed in a circular hole shape, and the third pocket is in communication with the second pocket, that is, the first pocket and the second capacitor The slot and the third pocket are in a synchronous manner, and the third pocket is open at least at one end, and the diameter of the third pocket is smaller than the second pocket, and the second pocket is separated from the third pocket The intersection is a first width, the intersection between the groove and the third cavity is a second width, the first width is smaller than the second width, and the tooth system is disposed in the second cavity of the body On the inner side, the tooth system can be displaced to the left and right in the second cavity, and the rear side of the toothing is provided with a concave arc groove, the concave arc groove has a concave edge shape, and the concave arc groove system and the third volume The slot is relatively positive; a control unit is disposed, the control unit is pivotally disposed in the third pocket of the body, and the control unit is adapted to be rotated by the user to control the toothing in the second pocket Controlling the forward and reverse rotation of the ratchet wrench by shifting left and right, the control unit includes: a button, a card member and an elastic member; the button is provided a cylindrical block pivotally disposed in the third cavity of the body, the height of the cylindrical block being the same as or smaller than the height of the third cavity, the cylindrical block being provided with a magazine slot The movement slot is formed in a circular groove shape, and the dial is convexly provided with a dialing portion for the user to manually move, the dialing portion is exposed to the outside of the body, and the dialing portion is coupled to the body The engaging member is abutting; the engaging member is a cap-shaped member, and the engaging member is received in the elastic groove of the button; the elastic member is received in the elastic groove of the button, the elastic member One end of the spring is struck against the clamping member, and the clamping member is biased against the concave arc groove of the tooth by the elastic force of the elastic member. The structure of the ratchet wrench of claim 3, wherein the system is provided with a first ring groove, the first ring groove is disposed below the first groove, and the lower portion of the ratchet is provided with a second diameter a ring groove, the second ring groove is opposite to the first ring groove, and is provided with a buckle ring. The buckle ring has a C-shaped ring shape, and the buckle ring is accommodated in the first ring groove of the body and the ratchet wheel. In the second ring groove, the ratchet wheel is pivotally disposed in the first receiving groove, and the center of the ratchet wheel is provided with a set of fitting portions, wherein the fitting portion is in the form of a polygonal groove, and the fitting portion can be fitted with the screwing member. The sleeve portion has a through-groove shape, and the ratchet portion is provided with a rotating portion, the diameter of the rotating portion is larger than the diameter of the ratchet, and the rotating portion is exposed to the outside of the body, and the rotating portion is available to the user. Rotating, a top surface is arranged on the top of the cylindrical block, the top surface is in a plane shape, and the top surface is abutted against the rotating portion of the ratchet, so that the button is restricted to the rotating portion without coming out Outside the three-slot. The ratchet wrench structure of claim 3, wherein the engaging member is opposite to the groove of the second receiving groove, and the intersection between the groove and the third receiving groove has a second width, among the body A steering angle is arranged between the axis and the clamping member, and the locking member can be accommodated in the groove when rotating, and the value of the steering angle is increased, and the groove is used to increase the steering angle when the control unit rotates. The ratchet wrench structure of claim 3, wherein the groove and the second pocket have the same center, and the first diameter and the second diameter have the same center. The ratchet wrench structure of claim 3, wherein the first diameter is smaller than the second diameter, and the second diameter is greater than the first diameter by about MM to MM. The ratchet wrench structure of claim 3, wherein the numerical ratio between the second height and the first height is between one-half and one-sixth. The ratchet wrench structure of claim 3, wherein the one or both sides of the groove are provided with chamfered portions. The ratchet wrench structure of claim 3, wherein the second recess of the body is provided with a plurality of grooves, the number of the grooves being two, and the plurality of grooves are parallel. The ratchet wrench structure of claim 3, wherein the groove in the second cavity is disposed at a near third cavity, and the center of the groove is away from the first cavity than the center of the second cavity The center of the groove may have a second diameter that is equal to, greater than, or less than the first diameter of the second pocket. The ratchet wrench structure of claim 3, wherein the groove in the second cavity is disposed near the first cavity, and the center of the groove is away from the third cavity than the center of the second cavity The center of the groove may have a second diameter that is equal to, greater than, or less than the first diameter of the second pocket. The ratchet wrench structure of claim 3, wherein the second recess of the body is provided with a plurality of recesses, the number of the recesses being two, and the plurality of recesses are parallel to each other, the two The groove is located at the two end faces of the second cavity, that is, the maximum distance between the two grooves. The ratchet wrench structure of claim 3, wherein the second recess of the body is provided with a groove, and the third cavity is provided with another groove, and the two grooves are in a communicating manner, The grooves are provided with the same width, and the grooves provided at the third groove have the same axis as the third groove. The ratchet wrench structure of claim 3, wherein the groove is disposed at a third pocket of the body, the groove having the same axis as the third pocket. The ratchet wrench structure of claim 3, wherein the first pocket and the second pocket of the body are in the shape of a circular groove of the same diameter, and the first pocket and the second pocket are in a communicating manner. The The second pocket is provided with two pivot slots at the proximal shank, and the pivot slots are parallel grooves which are parallel to each other, and the recesses are disposed at the pivot slots. The ratchet wrench structure according to claim 3, wherein the system is a small eight-handed hand, the ratchet sleeve portion is in the shape of a convex quadrangular head, the tooth system is a horn tooth, and a cover body is provided. The cover system cooperates with the shape of the first pocket and the second pocket of the body.