TW201827166A - Retractable ratchet wrench structure capable of adjusting length of ratchet wrench based on arm of force required for actually screwing or unscrewing screw or nut - Google Patents

Abstract

The present invention provides a retractable ratchet wrench structure (2), in which the main body is provided with a stem portion, and the stem portion is fitted in a retractable tube member. The retractable tube member is configured with a radial slot, and the front and rear sides of the radial slot are fxied with two fixing brackets. The front and rear sides of the two fixing brackets are pivoted with two positioning blocks. The front and rear sides of the retractable tube member corresponding to the radial slot is fixed with a front cover and a rear cover, wherein the front cover and the rear cover are configured with a fitting portion for fitting a toggle switch capable of moving back and forth. A compression spring is provided between the toggle switch and the rear cover. A positioning button is disposed inside the toggle switch. The positioning button and the positioning block are made as a guide groove and a clamping portion in a rotational motion according to the tooth shape of a helical gear, such that the clamping portion of the positioning block can clamp the guide groove and move back and forth therewith for swinging outward or inward. The stem portion is configured with a plurality of positioning engagement grooves symmetric to one another. The position of the positioning block corresponding to the positioning engagement groove is configured with a positioning engagement block. When the toggle switch is moved forward by the action of elastic force of the compression spring, the positioning engagement block is engaged with the positioning engagement groove; otherwise, the positioning engagement block is released from the positioning engagement groove, so as to achieve the purpose of adjusting length by extending and retracting.

Description

 Telescopic ratchet wrench structure (2)  

The structure (2) of the telescopic ratchet wrench of the present invention is mainly applied to the technical application of adjusting the length of the ratchet wrench according to the force arm required for actually screwing or loosening the screw or the nut to work.

According to the conventionally used telescopic ratchet wrench structure, a plurality of positioning grooves are mainly arranged on the sleeve which can be extended or shortened, and a spring and a positioning bead are arranged in a sleeve, and the spring can be used when the sleeve is extended and contracted. The elastic force locates the bead card cartridge in one of the positioning slots, thereby achieving the length of the sleeve that can flexibly adjust the ratchet wrench, and can be applied to the disassembly and assembly operations of screws and nuts of various specifications and sizes.

However, in the above-mentioned conventionally used telescopic ratchet wrench structure, in actual operation, since the positioning bead body cartridge is positioned in the positioning groove only by the elastic force of the spring, the positioning of the bead body is easily detached during the operation of the output force. In the case of the trough, there is a very high risk of use, and there are problems and lacks that have yet to be solved.

The present inventor is currently engaged in the manufacture and design of related products, accumulated many years of practical experience and experience, and has actively invested in the spirit of innovation and improvement in view of the existing safety problems and lack of the conventional conventional telescopic ratchet wrench structure, and the completed telescopic ratchet wrench Structure (2).

The technical means for solving the problem is that the body is provided with a handle portion, and the handle portion is sleeved in a telescopic tube member, and the telescopic tube member is provided with a radial dissection groove, and the front and rear fixing portions of the radial dissection groove are fixed. a front positioning block is disposed on the left and right sides of the two fixing bases, and the front and rear covers are fixed to the front and rear of the radial expansion groove, and the front cover and the rear cover are provided with a socket portion as a socket a switch for moving forward and backward, a compression spring is arranged between the switch and the rear cover, and a switch button is arranged inside the switch, and the positioning button is provided with a guide groove and a front portion of the front narrow rear sill in a rotary motion manner a wide rear narrow guide rail, wherein the two positioning blocks are respectively provided with two clamping portions corresponding to the guiding groove and the tapered rail, so that the two clamping portions of the two positioning blocks can be clamped on the guiding groove and the tapered track and The handle is swayed outward or inwardly, and the handle is provided with a plurality of symmetrical positioning slots, and the two positioning blocks are provided with two positioning inserts corresponding to the positioning recesses, when the switching switch is subjected to the compression spring Two positioning inserts and positioning inserts when moving forward with elastic force The slot is fitted, and the slot is disengaged from the positioning slot, so as to achieve the purpose of telescopic adjustment of the length, the carding effect is good, the operation is very safe and reliable, and the efficiency is improved, and the main purpose is achieved.

The efficacy of the invention against the prior art is:

First, the action of the positioning button is mandatory for the action of the left and right positioning blocks, which can ensure that the action does not fail 100%.

Second, the positioning principle of the positioning button is to use the tooth shape of the helical gear to form a two-cone orbital track, and form a guiding groove in a rotating motion between the two tapered tracks, thereby forcing the two clamping portions of the two positioning blocks Hold in the two tapered orbits and move outward or inward as the front narrow width of the channel changes.

Third, the left and right positioning blocks are also formed by the tooth shape of the helical gear to form two clamping portions, and at the same time, the narrowing and wide width of the guiding groove of the positioning button are used for outward or inward movement.

The above-mentioned telescopic ratchet wrench structure (2), wherein: the telescopic pipe member is provided with two positioning flanges at the front and rear sides of the left and right positioning grooves of the radial slot, and is disposed at the middle of the longitudinal direction of the radial slot There are two coupling grooves, and the front and rear two fixing seats are respectively provided with a joint block at the front and rear joint grooves of the radial split groove, so that the front and rear two fixing seats can be combined with the front and rear two joint grooves of the radial split groove by the front and rear two joint blocks. In the middle, the two positioning flanges are fixed at the same time.

The above-mentioned telescopic ratchet wrench structure (2), wherein: the front cover and the rear cover are provided with corresponding convex and concave rings on the end surface of the socket portion, so that the front cover and the rear cover can be joined by the convex ring and the concave ring. One.

The above-mentioned telescopic ratchet wrench structure (2), wherein: the switch is provided with a backward arrow on the upper side of the switch, and two sides of the switch are provided with two-finger push portions, and the arrow indicates that the switch can be pushed backward by the finger push portion.

The above-mentioned telescopic ratchet wrench structure (2), wherein: the rear end surface of the handle portion is provided with a threaded hole column, the screw hole column is for locking and fixing a ring body, and a groove is arranged at a circumference of the ring body, the groove The slot can be used to sleeve an O-ring as a means of preventing noise when the handle is telescopic.

10‧‧‧ Ontology

11‧‧‧ convex

111‧‧‧ positioning ratchet

112‧‧‧ pivot hole

20‧‧‧ handle

21‧‧‧ recess

22‧‧‧ pivot hole

23‧‧‧ plane

24‧‧‧ Positioning slot

25‧‧‧ screw hole column

26‧‧‧Act

27‧‧‧ trench

28‧‧‧O-ring

30‧‧‧Flexible pipe fittings

31‧‧‧ plane

32‧‧‧ Radial slot

33‧‧‧ joint slot

34‧‧‧ positioning groove

35‧‧‧ positioning flange

36‧‧‧ screw holes 36

37‧‧‧ screw holes

38‧‧‧ Grip

39‧‧‧Chute

40‧‧‧ Fixed seat

41‧‧‧Combined blocks

42‧‧‧ pivot hole

50‧‧‧ Positioning block

51‧‧‧ pivot column

52‧‧‧Clamping Department

53‧‧‧ Groove

54‧‧‧ Positioning inserts

60‧‧‧ front cover

61‧‧‧ Sockets

62‧‧‧ outer edge

63‧‧‧ convex ring

64‧‧‧through hole

65‧‧‧Longitudinal guide groove

66‧‧‧ Missing slots

70‧‧‧ Back cover

71‧‧‧ Sockets

72‧‧‧ outer edge

73‧‧‧ concave ring

74‧‧‧through hole

75‧‧‧Longitudinal guide groove

76‧‧‧ Missing slots

80‧‧‧Toggle switch

81‧‧‧ wing

82‧‧‧ inner edge

83‧‧‧ arrow

84‧‧‧ refers to the Ministry of Promotion

85‧‧‧ push seat

86‧‧‧ accommodating slots

90‧‧‧ positioning button

91‧‧‧ card block

92‧‧‧Guide

93‧‧‧Cone orbit

100‧‧‧Upper cover

101‧‧‧ spring seat

102‧‧‧ Groove

103‧‧‧ actuation slot

104‧‧‧ arrow

105‧‧‧ reinforcing ribs

106‧‧‧ convex ring

107‧‧‧Combined convex

200‧‧‧Under cover

201‧‧‧round seat

202‧‧‧Internal

203‧‧‧ concave ring

204‧‧‧through hole

205‧‧‧ combined recess

300‧‧‧ front cover

301‧‧‧round seat

302‧‧‧ Sockets

303‧‧‧through hole

304‧‧‧ concave ring

305‧‧‧ positioning flange

400‧‧‧ switch

401‧‧‧Spring slot

402‧‧‧ dial

403‧‧‧guide

404‧‧‧Cone orbit

P‧‧‧ screws

S‧‧‧ compression spring

The first figure is a partial cross-sectional view of a three-dimensional combination of the first embodiment of the present invention.

The second drawing is an enlarged view of the three-dimensional decomposition and T, W, A, N, and H portions of the first embodiment of the present invention.

The third drawing is a schematic view of the sectional combination of the first embodiment of the present invention.

The fourth picture is a schematic diagram of the Z-Z section of the third figure.

Figure 5: Schematic diagram of the B-B section of the third figure.

Figure 6 is a schematic view of the D-D section of the third figure.

Figure 7 is a perspective view showing the release state of the embodiment of the present invention when the pull ring is pulled backward.

Figure 8 is a cross-sectional view showing the release state of the embodiment of the present invention when the pull ring is pulled backward.

The ninth picture is a schematic view of the F-F section of the eighth figure.

FIG. 10 is a perspective view showing the operation of the first embodiment of the present invention when the length is adjusted by telescopic adjustment.

Figure 11 is a schematic cross-sectional view showing the operation of the first embodiment of the present invention when the length is adjusted by telescopic adjustment.

Figure 12: Schematic diagram of the S-S section of the eleventh figure.

Figure 13 is a schematic view showing the positioning state of the first embodiment of the present invention.

Figure 14: Schematic diagram of the J-J section of the thirteenth figure.

Figure 15 is a partial cross-sectional view showing a three-dimensional combination of the second embodiment of the present invention.

Figure 16 is a perspective view showing the three-dimensional decomposition and the L, K, U, and Z portions of the second embodiment of the present invention.

Figure 17 is a schematic view showing the sectional combination of the second embodiment of the present invention.

Figure 18 is a cross-sectional view showing the disengaged state of the second embodiment of the present invention when the pull ring is pulled backward.

Figure 19: A schematic view of the A-A section of Figure 18.

Fig. 20 is a schematic cross-sectional view showing the operation of the second embodiment of the present invention when the length is adjusted and adjusted.

Twenty-first picture: is a schematic diagram of the Q-Q profile of the twentieth figure.

Twenty-second diagram is a schematic diagram of the positioning state of the second embodiment of the present invention.

Twenty-third picture: is a schematic view of the V-V cross section of the twenty-second figure.

In order to make the person skilled in the art familiar with the art easy to understand the construction contents of the present invention and the functional benefits that can be achieved, two specific embodiments are listed, and the following detailed description is given with the following drawings: A telescopic ratchet wrench structure ( 2) Please refer to the first figure for a partial cross-sectional view of a three-dimensional combination of the first embodiment of the present invention. 2 is an enlarged view of the stereo decomposition and T, W, A, N, and H portions of the first embodiment of the present invention. And the third, fourth, fifth, and sixth figures are schematic views of the cross-section combination of the first embodiment of the present invention and the Z-Z, B-B, and D-D of the third figure. The utility model mainly comprises: a body 10, a handle 20, a telescopic tube 30, two front and rear fixing seats 40, two left and right positioning blocks 50, a front cover 60, a rear cover 70, a switch 80, a positioning button 90 and a a compression spring S; wherein: the body 10 extends rearwardly and has a convex portion 11 having a circular arc shape, and the circular arc surface of the convex portion 11 is provided with a plurality of positioning ratchet teeth 111, and a radial center of the convex portion 11 is provided with a The pivot hole 112 is provided with a handle 20 for pivoting the screw P; the front end of the handle 20 is provided with a recess 21 corresponding to the convex portion 11 of the body 10, and the central portion of the recess 21 is provided with two pivot holes. 22, the screw P can be pivoted into the pivot hole 112 of the convex portion 11, so that the body 10 can be pivotally integrated with the handle 20, and the bottom surface of the recess 21 corresponds to the plurality of positioning ratchets 111 of the convex portion 18. A spring (not shown) and a steel ball (not shown) are disposed between the two positioning ratchets 111 by the steel ball (not shown), so that the body 10 can adjust the working angle at will. A flat surface 23 is disposed above the handle portion 20, and the handle portion 20 is provided with a plurality of two-dimensional symmetry at a distance between the left and right sides of the plane 23. The rear end surface of the shank portion 20 is provided with a screw hole post 25, and the screw hole post 25 can be locked by a screw P to fix a ring body 26. The ring body 26 is provided with a groove 27 at the circumference thereof. The groove 27 can be sleeved with an O-ring 28 to prevent noise when the handle 20 is stretched and retracted; the inside of the telescopic tube 30 can be nested in the handle 20, and a plane is arranged above the front end of the telescopic tube 30. 31, the plane 31 is provided with a radial dissection groove 32. The front and rear portions of the radial dissection groove 32 are provided with two front and rear fixing seats 40. The radial dissection groove 32 is provided with two coupling grooves 33 in the middle of the longitudinal direction. The two positioning grooves 34 are disposed at the middle of the left and right lateral direction of the radial dissection groove 32, and the two positioning grooves 34 are provided with the left and right positioning blocks 50, and the positioning grooves 34 are disposed. Two positioning flanges 35 are provided on the front and rear sides for positioning the two fixing seats 40. The telescopic tube members 30 are provided with two screw holes 36 corresponding to the left and right sides of the front side of the radial slot 32, and the two screw holes are provided. The front cover 60 is fixed by the two screws P. The telescopic tube 30 is provided with two screw holes 37 corresponding to the left and right sides of the rear of the radial slot 32. The second screw hole 37 can be used to fix the rear cover 70 by the two screws P. The rear end of the telescopic tube member 30 is provided with a grip sleeve 38. The front and rear two fixing seats 40 are received at the front and rear of the radial slot 32 of the telescopic tube member 30. The front and rear two fixing seats 40 are respectively provided with a coupling block 41 at the front and rear coupling grooves 33 of the radial slot 32, so that the front and rear two fixing seats 40 can be coupled to the front and rear of the radial slot 32 by the front and rear two coupling blocks 41. The two coupling grooves 33 are fixed by the two positioning flanges 35 at the same time, and the two left and right sides of the opposite sides of the front and rear two fixing seats 40 are respectively provided with two pivoting holes 42 for pivoting and setting the left and right positioning blocks 50. The two positioning blocks 50 are disposed in the two positioning grooves 34 of the telescopic tube member 30. The two left and right positioning blocks 50 are respectively provided with two pivoting columns at the two pivoting holes 42 of the front and rear two fixing seats 40. 51. The left and right positioning blocks 50 can be pivoted into the two pivot holes 42 of the front and rear two fixing bases 40 by using the two pivoting columns 51, and the left and right sides of the positioning block 50 are provided with two upper and lower jaws. a tapered portion 52, a groove 53 is formed between the two clamping portions 52, and the clamping portion 52 and the groove 53 are The teeth of the helical gear are formed, and the two positioning blocks 54 are respectively disposed at the lower side of the left and right positioning blocks 50, so that the two positioning blocks 54 can swing outward or inward from the pivoting column 51. The positioning insert 54 is sized to fit in the positioning recess 25 of the handle 20; the front cover 60 is sleeved at the front of the telescopic tube 30 corresponding to the radial slot 32, and the rear cover 60 is disposed behind There is a hollow sleeve portion 61 for socketing a switch 80. The outer diameter of the front cover 60 is larger than the outer diameter of the sleeve portion 61, thereby forming an outer edge 62, which can prevent the outer edge 62. The switch 80 is disengaged, and the end surface of the sleeve portion 61 is provided with a ring of convex rings 63 for combining with the rear cover 70. The left and right sides of the sleeve portion 61 correspond to the two screw holes 36 of the telescopic tube member 30. There are two through holes 64, and the two screws P are locked and fixed in the two screw holes 36 of the telescopic tube member 30 through the two through holes 64. Two longitudinal guiding grooves 65 are disposed at the left and right sides of the socket portion 61. As the guiding switch 80 is longitudinally displaced forward and backward, a corresponding slot 66 is provided on the upper portion of the sleeve 61 corresponding to the positioning button 90 as a dodging The back cover 70 is sleeved on the rear of the telescopic tube member 30 corresponding to the radial slot 32, and the front cover 70 is provided with a hollow sleeve portion 71 as a sleeve switch. For the purpose of 80, the outer diameter of the rear cover 70 is larger than the outer diameter of the sleeve portion 71, thereby forming an outer edge 72 which can be abutted against the fixed end of a compression spring S. The sleeve portion 71 is abutted. The end surface of the front cover 60 is provided with a concave ring 73 corresponding to the convex cover 63 of the front cover 60. The front cover 60 and the rear cover 70 can be integrally joined with the concave ring 73 by the convex ring 63. The left and right sides of the socket portion 71 correspond to the left and right sides. Two through holes 74 are defined in the two screw holes 37 of the telescopic tube member 30, and the two screws P are locked and fixed in the two screw holes 37 of the telescopic tube member 30 through the two through holes 74, and the left and right sides of the sleeve portion 71 are Two longitudinal guiding grooves 75 are provided as the guiding switch 80 for longitudinally moving forward and backward. The upper portion of the socket portion 71 corresponding to the positioning button 90 is provided with a notch 76 for use as the dodging positioning button 90. The switch 80 is sleeved in the sockets 61 and 71 of the front cover 60 and the rear cover 70. The left and right sides of the inner wall of the switch 80 correspond to the two verticals of the front cover 60 and the rear cover 70. Two guiding plates 85 and 75 are disposed at the guiding grooves 65 and 75, so that the switching switch 80 can be longitudinally moved back and forth in the two longitudinal guiding grooves 65 and 75 by using the two wings 81. The flap 81 of the switching switch 80 corresponds to The movable end of the compression spring S is abutted against the rear cover 70, and the changeover switch 80 is rebounded forward by the elastic force of the compression spring S. The changeover switch 80 is provided with a circle corresponding to the outer edge 62 of the front cover 60. The inner edge 82 is used to prevent the switch 80 from coming out. The switch 80 is provided with a rearward arrow 83. The two sides of the switch 80 are provided with a two-finger pusher 84. The arrow 83 indicates the switch. 80 can be pushed back by the finger pushing portion 84, the top of the changeover switch 80 is provided with a protruding pusher 85, the inside of the pusher seat 85 is provided with a receiving groove 86, the receiving groove 86 can accommodate a positioning button 90; The positioning button 90 is a front-narrow, wide-width, tapered arc-shaped piece. The upper portion of the positioning button 90 corresponding to the changeover switch 80 is provided with a block 91, so that the positioning button 90 can be stuck by the card 91. It is fixed to the receiving groove 86 and integrated with the switch 80 to allow the positioning button 90 to follow the switch 80 The front side of the positioning button 90 is provided with a front groove having a front width and a rear width. The outer side of the guide groove 92 is provided with a front width corresponding to the two grooves 53 of the left and right positioning blocks 50. The rear narrow guide rail 93, the guide groove 92 and the tapered rail 93 are formed according to the tooth shape of the helical gear, so that the left and right positioning blocks 50 can be clamped to the two tapered rails 93 by the two clamping portions 52, respectively. The two clamping portions 52 can swing inside and outside as the guide groove 92 and the tapered rail 93 are displaced forward and backward.

The present invention, which is a combination of the above various component structures, is provided with a telescopic ratchet wrench structure (2). In practical application, please refer to the seventh figure: the first embodiment of the present invention pulls back and pulls A three-dimensional diagram of the release state of the ring. FIG. 8 is a schematic cross-sectional view showing the release state of the embodiment of the present invention when the pull ring is pulled backward. And the ninth figure: is a schematic view of the F-F section of the eighth figure. When the user wants to adjust the length of the ratchet wrench, it is only required to be pulled backward by the finger pushing portions 84 on the left and right sides by the finger according to the instruction of the arrow 83 above the switching switch 80, that is, the compression spring S can be compressed backward, and the positioning is driven at the same time. The button 90 is displaced rearward, so that the guide groove 92 of the positioning button 90 and the narrow portion in front of the tapered rail 93 are located at the two clamping portions 52 of the left and right positioning blocks 50, and the two clamping portions 52 above the left and right positioning blocks 50 are The guiding groove 92 and the tapered rail 93 are narrowed and inwardly oscillated, so that the two positioning inserts 54 below the left and right positioning blocks 50 can swing outwardly from the pivoting column 51, and then disengage from the left and right sides of the fork handle 20. The fitting relationship of the recessed grooves 25 allows the shank 20 to be elongated forward or backward from the telescopic tubular member 30 (as shown in the tenth, eleventh, and twelfth drawings) for the purpose of telescopically adjusting the length of the ratchet wrench.

Please refer to the thirteenth figure, which is a schematic diagram of the positioning state of the first embodiment of the present invention. And the fourteenth figure: is a schematic view of the J-J section of the thirteenth figure. When the user adjusts the length of the ratchet wrench, only the switch 80 needs to be released, and the switch 80 is returned to the original position under the rebound of the compression spring S, while the inner edge 82 of the switch 80 is utilized. Positioned on the outer edge 62 of the front cover 60; at this time, the shift button 80 is used to drive the positioning button 90 to be displaced forward, so that the guide groove 92 of the positioning button 90 and the rear portion of the tapered rail 93 are located at the left and right positioning blocks. The two clamping portions 52 of the two clamping portions 52 of the left and right positioning blocks 50 swing outward due to the deformation of the guiding groove 92 and the tapered rail 93, so that the two positioning inserts 54 below the left and right positioning blocks 50 are located. The pivoting column 51 can be pivoted inwardly from the center, and then fits into a pair of positioning recesses 25 on the left and right sides of the handle 20, so that the fork handle 20 can be repositioned on the telescopic tube 30, providing the user with practical conditions. Work requirements, adjust the length of the ratchet wrench.

A telescopic ratchet wrench structure (2), please refer to the fifteenth figure, which is a partial cross-sectional view of a three-dimensional combination of the second embodiment of the present invention. And FIG. 16 is a schematic enlarged view of the three-dimensional decomposition and L, K, U, and Z portions of the second embodiment of the present invention. And the seventeenth figure is a schematic view of the sectional combination of the second embodiment of the present invention. The utility model mainly comprises: a body 10, a handle 20, a telescopic tube 30, two front and rear fixing seats 40, two left and right positioning blocks 50, an upper cover 100, a lower cover 200, a front cover 300, a switch 400 and a compression spring S; wherein: the body 10 extends rearwardly and has a convex portion 11 having a circular arc shape, and the circular arc surface of the convex portion 11 is provided with a plurality of positioning ratchet teeth 111, and the radial center of the convex portion 11 is disposed There is a pivot hole 112 for pivoting a handle 20; a front end of the handle 20 corresponding to the convex portion 11 of the body 10 is provided with a recess 21, and the radial center of the recess 21 is provided with two pivot joints. The hole 22 is configured to be pivoted into the pivot hole 112 of the protrusion 11 so that the body 10 can be pivotally integrated with the handle 20. The bottom surface of the recess 21 corresponds to the plurality of positioning ratchets 111 of the protrusion 18. A spring (not shown) and a steel ball (not shown) are disposed between the two positioning ratchets 111 by the steel ball (not shown), so that the body 10 can adjust the working angle at will. A flat surface 23 is disposed above the handle portion 20, and the handle portion 20 is provided with a plurality of two-way symmetry at a distance between the left and right sides of the plane 23. Positioning the slot 24, the rear end surface of the handle portion 20 is provided with a threaded hole post 25, which can be locked by a screw P to fix a ring body 26. The ring body 26 is provided with a groove 27 at the circumference thereof. The groove 27 can be sleeved with an O-ring 28 to prevent noise when the handle 20 is stretched and retracted; the inside of the telescopic tube 30 can be nested in the handle 20, and a plane is arranged above the front end of the telescopic tube 30. 31, the plane 31 is provided with a radial slot 32, and the front and rear portions of the radial slot 32 are provided with two front and rear fixing seats 40, and a sliding slot 39 is disposed in the middle of the rear longitudinal direction of the radial slot 32. As the front and rear sliding of the switch 400, the two positioning grooves 34 are disposed at the middle of the left and right sides of the radial slot 32. The two positioning grooves 34 are provided for the left and right positioning blocks 50. Two positioning flanges 35 are provided on both sides for positioning the two fixing seats 40. The telescopic tube member 30 is provided with a screw hole 36 corresponding to the lower portion of the front side of the radial slot 32. The screw hole 36 can be locked by the screw P. A front cover 300 is fixed to the knot. The telescopic tube 30 is provided with a screw hole 37 corresponding to the lower portion of the rear of the radial slot 32. The screw hole 37 is provided. The cover member 200 is fixed by a screw P. The rear end of the telescopic tube member 30 is provided with a grip sleeve 38. The front and rear two mounts 40 are received at the front and rear of the radial slot 32 of the telescopic tube member 30, and are subjected to two positioning protrusions. The rim 35 is fixed and fixed, and two pivotal holes 42 are respectively disposed at the left and right sides of the opposite sides of the front and rear two fixing seats 40, and the two left and right positioning blocks 50 are disposed as pivot joints; In the two positioning grooves 34 of the telescopic tube member 30, the two left and right positioning blocks 50 are respectively provided with two pivoting columns 51 at the two pivoting holes 42 of the front and rear two fixing seats 40, so that the left and right positioning blocks 50 can be utilized respectively. The two pivoting poles 51 are pivotally connected to the two pivoting holes 42 of the front and rear two fixing bases 40. The left and right sides of the positioning block 50 are provided with two clamping portions 52 having a narrow upper jaw taper shape. A groove 53 is formed between the portions 52. The clamping portion 52 and the groove 53 are formed according to the tooth shape of the helical gear. The lower and second positioning blocks 50 are respectively provided with two wedge-shaped positioning blocks 54 for allowing The two positioning inserts 54 can swing outward or inward from the pivoting column 51, and the positioning insert 54 is just the same size. The upper cover 100 is formed in a semi-circular shape with a downwardly facing opening. The upper cover 100 is disposed over the longitudinal slot 32 and the sliding slot 39 of the telescopic tubular member 30. A spring seat 101 is disposed at the rear of the upper cover 100. The spring seat 101 can be abutted against a fixed end of the compression spring S. The upper cover 100 is provided with a groove 102 corresponding to the longitudinal slot 32. An actuating slot 103 is disposed at the upper portion for accommodating a switch 400 for allowing the switch 400 to be displaced forward and backward in the recess 102 and the actuating slot 103. The top surface of the upper cover 100 is provided with a rearward arrow 104. The switch 400 is instructed to be pushed backward by the arrow 104. The inner wall of the upper cover 100 is provided with a plurality of reinforcing ribs 105. The front cover and the rear end surface of the upper cover 100 are respectively provided with a half ring of the convex ring 106 as the front cover. The cover 300 is combined with the lower cover 200. The left and right sides of the bottom of the upper cover 100 are provided with two engaging protrusions 107 for combining with the lower cover 200; the lower cover 200 is a semicircle with an opening upward. The rear cover 200 is provided with a hollow circular base 201, so as to be sleeved on the telescopic tube 30 corresponding to the longitudinal direction. An inner edge 202 is provided in front of the lower cover 32 and the sliding groove 39 as an inner edge 202 for sleeving a front cover 300. The lower cover 200 corresponds to the circular base 201. A half ring of the concave ring 203 is provided at the convex ring 106 of the upper cover 100 as a combination with the convex ring 106 at the rear of the upper cover 100. The front and rear of the lower cover 200 correspond to the two screw holes of the telescopic tubular member 30. There are two through holes 204 at 36 and 37, and the two screws P are locked and fixed in the two screw holes 36 and 37 of the telescopic tube 30 through the two through holes 204. The left and right sides of the top of the lower cover 200 correspond to A coupling recess 205 is provided at the coupling protrusion 107 of the upper cover 100 as a coupling with the upper cover 100. The front cover 300 is provided with a hollow circular base 301 at the front of the cover 300, thereby being sleeved and stretched. At the front end of the pipe member 30, a rear half of the front cover 300 is provided with a semicircular arc-shaped sleeve portion 302 so as to be sleeved at the inner edge 202 of the lower cover 200. The sleeve portion 302 corresponds to the lower cover 200. A through hole 303 is also defined in the through hole 204 at the front, and the screw P can be locked and fixed in the screw hole 36 of the telescopic tube member 30 through the through hole 303. The front cover 300 is in the circular seat. The body 301 corresponds to a concave ring 304 provided with a half turn at the convex ring 106 in front of the upper cover 100, and is combined with the convex ring 106 in front of the upper cover 100. The front cover 300 corresponds to the circular base 301. A positioning flange 305 is disposed on the plane 31 of the telescopic tube member 30 for positioning the telescopic tube member 30. The switch 400 is a front narrow and wide tapered arcuate piece. The rear end surface of the switch 400 corresponds to the upper cover. The spring seat 101 of the 100 is provided with a spring slot 401 for abutting against the movable end of the compression spring S, and the switch 400 is rebounded forward by the elastic force of the compression spring S. The upper portion of the switch 400 corresponds to the actuating slot of the upper cover 100. A dial 402 is provided at 103, and the switch 400 is used as a finger press and hold button 402. The switch 400 is internally provided with a guide groove 40 3 having a front narrow rear width and a rotational movement manner, and the guide groove 403 is outside. Corresponding to the two grooves 53 of the left and right positioning blocks 50, a tapered rail 404 having a front width and a rear narrowness is provided. The guide groove 403 and the tapered rail 404 are formed according to the tooth shape of the helical gear, so that the left and right positioning blocks 50 are provided. The two clamping portions 52 can be respectively clamped to the two tapered rails 404 such that the two clamping portions 52 The guide groove 403 and the tapered rail 404 can be swung inside and outside as the guide groove 403 is displaced back and forth.

The present invention, which is a combination of the above-mentioned various component structures, is provided with a telescopic ratchet wrench structure (2). In practical application, please refer to FIG. 18: the second embodiment of the present invention is pulled backward. Schematic diagram of the disengaged state when pulling the ring. And the nineteenth figure: is a schematic view of the A-A section of the eighteenth figure. When the user wants to adjust the length of the ratchet wrench, the button 402 of the switch 400 can be pulled back by the finger according to the instruction of the arrow 104 above the upper cover 100, that is, the compression spring S can be compressed backward, and the switch 400 is driven at the same time. The rearward displacement of the guide groove 403 of the switch 400 and the narrow portion of the tapered track 404 is located at the two clamping portions 52 of the left and right positioning blocks 50. The two clamping portions 52 above the left and right positioning blocks 50 are guided by the guiding groove 403. The tapered rail 404 is narrowed and inwardly oscillated, so that the two positioning inserts 54 below the left and right positioning blocks 50 can swing outwardly from the pivoting column 51, and then disengage from the positioning recess 25 on the left and right sides of the fork handle 20. The fitting relationship allows the handle 20 to be elongated forward or backward from the telescoping tube 30 (as shown in the twentieth and twenty-first figures) to achieve the purpose of telescopically adjusting the length of the ratchet wrench.

Please refer to the twenty-second figure, which is a schematic diagram of the positioning state of the second embodiment of the present invention. And the twenty-third figure: is a schematic view of the V-V cross section of the twenty-second figure. When the user adjusts the length of the ratchet wrench, it is only necessary to release the switch 400, so that the switch 40 0 returns to the original position under the rebound of the compression spring S; at this time, let the guide of the switch 400 The groove 403 and the rear portion of the tapered rail 404 are located on the two clamping portions 52 of the left and right positioning blocks 50. The two clamping portions 52 above the left and right positioning blocks 50 are deflected by the guiding groove 403 and the tapered rail 404. The outer swinging is such that the two positioning inserts 54 below the left and right positioning blocks 50 can swing inwardly about the pivoting column 51, and then fit into the positioning recesses 25 of the pair of left and right sides of the handle 20, so that the fork handles The 20 can be repositioned on the telescoping tube 30, providing the user with the ability to adjust the length of the ratchet wrench according to actual work requirements.

In summary, the present invention provides a telescopic ratchet wrench structure (2). After the actual production and repeated operation tests of the inventors, it is confirmed that the functional benefits expected by the present invention can be achieved, and at the same time, It has not yet been discovered, and it has the industrial use value. It has already met the requirements of the practicality and progress of the invention patent, and applied for the invention patent to the bureau.

Claims (11)

 The structure (2) of the telescopic ratchet wrench comprises: a body, a handle, a telescopic tube, two front and rear fixing seats, two left and right positioning blocks, a front cover, a rear cover, a switch, a positioning button and a compression a spring; wherein: the body extends rearwardly with a handle portion, a plane is disposed above the handle portion, and the handle portion is provided with a plurality of two-dimensional symmetric positioning recesses at a distance between the left and right sides of the plane; The inside of the telescopic tube member is sleeved in the handle portion, and a plane is disposed above the front end of the telescopic tube member, and the plane is provided with a radial dissection groove, and the front and rear portions of the radial dissection groove are provided with two front and rear fixing seats. The left and right sides of the radial slot are provided with two positioning grooves at the front and rear two fixing seats, and the two positioning grooves are provided with two left and right positioning blocks, and the telescopic tube member is provided with a front portion corresponding to the radial slot a front cover, the telescopic tube member is provided with a rear cover corresponding to the rear of the radial slot; the left and right sides of the opposite sides of the front and rear fixed seats are respectively provided with two pivoting holes, and the left and right positioning blocks are arranged as pivot joints; The left and right positioning blocks correspond to Two pivotal joints are respectively arranged at the two pivotal holes of the second fixed seat, so that the left and right positioning blocks can be pivoted to the front and rear two fixed seats, and the left and right sides of the positioning block are provided with two upper and lower narrow tapers. Forming a clamping portion, a groove is formed between the two clamping portions, the clamping portion and the groove are formed according to the tooth shape of the helical gear, and two positioning inserts are respectively disposed below the left and right positioning blocks. The two positioning inserts are swung outward or inwardly around the pivoting column, and the positioning insert is fitted into the positioning recess of the handle; the front cover is provided with a set of joints as a sleeve For the switch, the outer diameter of the front cover is larger than the outer diameter of the socket portion, thereby forming an outer edge, the outer edge prevents the switch from coming off, and the left and right sides of the socket are provided with two longitudinal directions. The guiding groove is used as a guiding switch to be longitudinally displaced forward and backward. The upper part of the socket is provided with a slot corresponding to the positioning button as a dodging positioning button; the front cover is provided with a set of connecting portions. As a sleeve for pulling the ring, the outer diameter of the back cover is larger than the outer diameter of the sleeve portion, thereby forming The outer edge is adapted to be abutted by a fixed end of the compression spring, and two longitudinal guiding grooves are arranged at the left and right sides of the socket portion, and the guiding switch is longitudinally displaced forward and backward. The upper part of the connecting portion is provided with a missing slot corresponding to the positioning button, and is used as a dodging positioning button; the switching open relationship is sleeved in the sleeve portion of the front cover and the rear cover, and the left and right sides of the inner wall of the switch switch correspond to the front Two flaps are disposed at the two longitudinal guiding grooves of the cover and the back cover, so that the switch can be longitudinally moved back and forth in the longitudinal direction of the two flaps, and the flaps of the switch can correspond to the back cover. The movable end of a compression spring is abutted, and the switching switch is rebounded forward by the elastic force of the compression spring. The switch has an inner edge corresponding to the outer edge of the front cover as a function for preventing the switch from coming off. The upper part of the switch is provided with a protruding pusher, and the inside of the push seat is provided with a receiving groove for receiving a positioning button; the positioning button is a tapered arc with a front narrow width a sheet body, the upper part of the positioning button corresponding to the accommodating groove of the switch A positioning block is arranged to allow the positioning button to be engaged with the switching slot by the clamping block and integrated with the switching switch, so that the positioning button can be displaced forward and backward along the longitudinal direction of the switching switch, and the positioning button is internally provided with a front portion a guide groove having a narrow rear width and a rotation movement manner, wherein the outer side of the guide groove is provided with a front width and a narrow tapered track corresponding to the two grooves of the left and right positioning blocks, and the guide groove and the tapered track are based on the helical gear The tooth shape is formed so that the left and right positioning blocks can be clamped to the two tapered rails by the two clamping portions, respectively, so that the two clamping portions can swing inside and outside as the guide groove and the tapered rail are displaced forward and backward.    The telescopic ratchet wrench structure (2) according to claim 1, wherein the telescopic tubular member is provided with two coupling grooves at a middle portion of the longitudinal direction of the radial slot, and the front and rear two fixing seats correspond to the front and rear of the radial slot. A joint block is respectively arranged at the groove, so that the front and rear two fixing seats can be fixed by the front and rear two joint blocks combined with the front and rear two joint grooves of the radial split groove.    The telescopic ratchet wrench structure (2) according to claim 1, wherein the front cover and the rear cover are provided with corresponding convex rings and concave rings on the end faces of the socket portions, so that the front cover and the rear cover can utilize the convex rings. Engaged with the concave ring.    The telescopic ratchet wrench structure (2) according to claim 1, wherein: the switch is provided with a rearward arrow, and two sides of the switch are provided with a two-finger pusher, and the arrow indicates that the pull ring can be pushed by the finger The department is pushing backwards.    The structure (2) of the telescopic ratchet wrench comprises: a body, a handle, a telescopic tube, two front and rear fixing seats, two left and right positioning blocks, an upper cover, a lower cover, a front cover, a switch and a a compression spring; wherein: the body extends rearwardly with a handle portion, and a plane is disposed above the handle portion, and the handle portion is provided with a plurality of two-dimensional symmetric positioning slots at a distance between the left and right sides of the plane The inside of the telescopic tube member is sleeved in the handle portion, and a plane is disposed above the front end of the telescopic tube member, and the plane is provided with a radial dissection groove, and the front and rear portions of the radial dissection groove are provided for front and rear two fixing seats. a sliding slot is disposed in the middle of the longitudinal direction of the radial slot, and is used as a switch for sliding back and forth. The left and right sides of the radial slot are provided with two positioning grooves at the front and rear fixed seats, and the two positioning positions are provided. The groove is provided with two left and right positioning blocks, and the telescopic tube member is provided with an upper cover, a lower cover and a front cover corresponding to the upper, lower and front sides of the radial slot and the sliding slot; the front and rear two fixing seats are opposite Two hinges on the left and right sides of the face The hole is provided as a pivot joint for the left and right positioning blocks; the left and right positioning blocks are respectively provided with two pivotal joints at the two pivotal holes of the front and rear fixed seats, so that the left and right positioning blocks can be pivoted before and after a fixing seat, the left and right sides of the positioning block are provided with two clamping portions with a narrow lower jaw taper shape, and a groove is formed between the two clamping portions, the clamping portion and the groove are according to the helical gear a toothed shape is formed, and two positioning inserts are respectively disposed below the left and right positioning blocks, so that the two positioning inserts swing outward or inwardly around the pivoting column, and the positioning insert is fitted to the handle Positioning the slot; the rear of the upper cover is provided with a spring seat, the spring seat is abutting against the fixed end of the compression spring, and the upper cover is provided with a groove corresponding to the longitudinal slot, above the groove An actuating slot is provided for accommodating a switch for allowing the switch to be displaced forward and backward in the recess and the actuating slot; a rear of the lower cover is provided with a hollow circular seat, the lower cover being An inner edge is provided on the front side for splicing a front cover; the front cover is The side is provided with a hollow circular seat body, and a rear side of the front cover is provided with a semicircular arc-shaped sleeve portion, thereby being sleeved at the inner edge of the lower cover; the switch is a front narrow and wide width cone The circular arc body has a spring groove corresponding to the spring seat of the upper cover, and the movable end of the compression spring is abutted against the movable end of the compression spring, and the switch is springed forward by the elastic force of the compression spring, and the switch corresponds to the upper portion A dial button is arranged at the actuating slot of the upper cover, and the finger is pressed and pressed to push the switch backwards. The switch is internally provided with a guiding groove with a front narrow width and a rear width, and the outer side of the guiding slot corresponds to The two grooves of the left and right positioning blocks are provided with a front width and a narrow tapered track. The guide groove and the tapered track are formed according to the tooth shape of the helical gear, so that the left and right positioning blocks can respectively utilize the two clamping portions. The two tapered portions are clamped so that the two clamping portions can swing inside and outside as the guide groove and the tapered rail are displaced forward and backward.    The telescopic ratchet wrench structure (2) according to claim 1, wherein: the front cover and the rear end surface are respectively provided with a half ring of convex rings, and the front cover and the lower cover correspond to the convexity of the upper cover. The ring is provided with a half ring of concave rings, so that the upper cover and the front cover and the lower cover can be integrated by the convex ring and the concave ring.    The telescopic ratchet wrench structure (2) according to claim 1, wherein: the left and right sides of the bottom of the upper cover are provided with two engaging convex portions, and the left and right sides of the top of the lower cover correspond to the two combined upper cover The convex portion is provided with two joint recesses, so that the upper cover and the lower cover can be integrated with the joint recess by the joint protrusion.    The telescopic ratchet wrench structure (2) according to claim 1, wherein the top surface of the upper cover is provided with a rearward arrow, and the arrow indicates that the switch is pushed backward.    The telescopic ratchet wrench structure (2) according to claim 1 or 5, wherein: the body extends rearwardly and has a convex portion having a circular arc shape, and the arc surface of the convex portion is provided with a plurality of positioning ratchets, the convex portion a pivotal hole is provided at a radial center of the portion, and a handle portion is disposed for the pivoting end of the body, and the front end of the handle portion is provided with a concave portion corresponding to the convex portion of the body, and the radial center of the concave portion is provided with two pivot joints The hole is configured to be pivoted into the pivot hole of the convex portion, so that the rocking body can be pivotally integrated with the handle, and the bottom surface of the concave portion is provided with a spring and a steel ball corresponding to the plurality of positioning ratchets of the convex portion The steel ball is fixed between the two positioning ratchets, so that the body can adjust the working angle at will.    The telescopic ratchet wrench structure (2) according to claim 1 or 5, wherein: the telescopic tube member is provided with two positioning flanges at the front and rear sides of the left and right positioning grooves of the radial slot, so that the front and rear two fixed The seat can be fixed by using two positioning flanges.    The telescopic ratchet wrench structure (2) according to claim 1 or 5, wherein: the rear end surface of the handle portion is provided with a threaded hole column, and the screw hole column is for locking and fixing a ring body, and the circumference of the ring body is provided There is a groove which can be used to sleeve an O-ring as a noise prevention device for the shank to expand and contract.