CN2566990Y

CN2566990Y - Socket wrench

Info

Publication number: CN2566990Y
Application number: CN 02266294
Authority: CN
Inventors: 王秉武
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-12
Filing date: 2002-08-12
Publication date: 2003-08-20
Anticipated expiration: 2012-08-12

Abstract

The utility model relates to a socket wrench, which comprises an operating main rod, a rubber socket, a cover of the main rod, wrench sockets, a reversing rod, a cam, a pin shaft, a rotary shaft, and a gear, wherein, the end of the operating main rod is flat and is provided with an 8-shaped cavity. The cam and the gear are arranged in the 8-shaped cavity. A round circular bead of the gear is matched with a through hole of the 8-shaped cavity to form the rotary center of the gear. An inner hole of the cam and the shaft diameter of the pin shaft are fixed. The shaft diameter of the pin shaft is matched with an inner hole of the 8-shaped cavity to form the rotary center of the cam. The cam is provided with two inner teeth and two slide surfaces. In addition, the cam is also provided with two chamfered grooves which are used for positioning and form two kinds of engagement of the cam and the gear respectively used for wrenching a left rotary screw thread or a right rotary screw thread. The utility model has the advantages that a self-locking structure of the cam is adopted, torque which can be transferred by the socket wrench and service life can be increased, and the operating main rod which is hollow can be used for placing a plurality of complete sets of wrench sockets inside. The socket wrench is nimble and convenient. The surface of a column of the operating main rod is provided with the rubber socket. The utility model has good operating hand feeling and operating safety.

Description

The shell type spanner

Technical field

The utility model relates to a kind of manual machine tool, specifically a kind of telescopic spanner of rolling over that use, that plurality of specifications is arranged, the set type of dress screw.

Background technology

The telescopic manual wrench of existing screw is various in style, and take ratchet and pawl structures mostly, wherein the operating angle of ratchet acutangulates shape, the insufficient strength ideal, and the working surface wearing and tearing of ratchet more influence moment and the service life thereof that telescopic spanner can transmit after long-term again the use.Chinese patent has a lot of patent reports to telescopic spanner, it as the patent No. 01120884.8 Chinese patent " box spanner that has the handle of handle for enclosing socket ", it discloses a kind of ratchet spanner, it comprises the actuator that elongate handle and can two-way rotations, described actuator operationally is suitable for selectively with to be ready being connected so that engage with in a plurality of drive sleeve that described spanner is manipulated any one, it is characterized by described handle and comprise a main body, main body is made to the cavity that has many different sizes and obviously separate, described cavity is used for admitting in a series of selectable different size drive sleeve that are used for manipulating with described box spanner each with juncture fixing but still that can take out, each described cavity is generally cylindrical and has this axis of foundation and holding device, described basic axis normal is in the straight line expandable part of described wrench body, and the described holding device that is arranged in described cavity is used for engaging and hold it in described cavity with described drive sleeve, described holding device is operated so that help to take out easily the described drive sleeve of using with described spanner as required, and allow described drive sleeve promptly put back in the described cavity and reuse so that deposit and be easy to recover, its shortcoming is to take ratchet and pawl structures, the insufficient strength ideal, service life is short; Its complete sleeve is to peg graft to be fixed on the wrench body in addition, though it is convenient to observe, but the inconvenience of using, grafting is fixed on the spanner as sleeve, if block too firmly, make sleeve be not easy to lift down from spanner, influence its use, if block too loosely, though can lift down, but come off easily, also influence its use; Fixing complete wrench socket is set on the spanner, and outward appearance is not attractive in appearance, is unfavorable for that it carries and transports yet; The pin of spanner end and sleeve are general socket connections, do not have position and lock mechanism, so in use, sleeve splits away off from the pin of spanner easily, influence its normal use.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of shell type spanner at prior art, and it can avoid the defective of pawl structures in the prior art, takes the cam design structure, increases moment and service life thereof that telescopic spanner can transmit.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of shell type spanner, it includes the operation mobile jib, the terminal end of operation mobile jib has and is used for the pin of socket connection wrench socket, operation mobile jib shaft is provided with the complete a plurality of wrench sockets of series, it is characterized in that described operation mobile jib end is flat, and be provided with " 8 " font chamber, the diapire of this chamber is provided with two through hole, gear and cam are installed in respectively in " 8 " font chamber, the round shape shoulder of gear matches with the through hole of " 8 " font chamber, the pivot of formative gear, gear and pin link into an integrated entity, in the reducing through hole is arranged, in this reducing through hole, insert rotating shaft, device has spring between the major part of this rotating shaft and the reducing through hole, there is spherical pore the pin side, in this spherical pore steel ball is installed, cooperate with the draw-in groove in the rotating shaft, realize that pin is connected with the interchangeable of wrench socket, the endoporus of cam and the diameter of axle of bearing pin fix, the diameter of axle of this bearing pin matches with " 8 " font chamber through hole again, form the pivot of cam, cam is provided with two internal tooths and two sliding surfaces, also have the chamfered groove of two location usefulness to cooperate the location in addition with elastic steel ball on " 8 " font chamber inner wall, two kinds of engagements forming cam and gear, the bearing pin outer end of cam is connected with the reversing bar that the realization spanner work of chamber outside turns to.

Cover is placed in the wrench socket combination that is equipped with plastic production in the cylinder hollow form inner chamber of above-mentioned operation mobile jib front end; it is the following common base that is that nested structure is placed in the wrench socket combination; the elastic card that both sides above the base are distributed with a plurality of paired distributions fixes the wrench socket of different size; size between the elastic card is a standard serialization; it is consistent with a plurality of wrench sockets of complete combination; so wrench socket combination place put can put into a plurality of complete; the wrench socket of different size; embody the compactedness and the reasonability of its project organization; the door bolt column sleeve that is used for mobile jib lid at end wall " L " the type groove of operation mobile jib go into wherein and twist fastening, with a plurality of wrench sockets in the protection mobile jib inner chamber.

Compared with prior art, advantage of the present utility model is to adopt the cam self-locking structure, increase moment and service life thereof that telescopic spanner can transmit, and the operation mobile jib with hollow can be put into a plurality of complete wrench sockets wherein, and is dexterous convenient, the periphery of operation mobile jib is provided with rubber sleeve, operating handle is good and have processing safety, and appearance looks elegant is convenient for carrying use.

Description of drawings

Fig. 1 is a three-dimensional combination figure of the present utility model;

Fig. 2 is a three-dimensional exploded view of the present utility model;

Fig. 3 is the operation mobile jib stereogram of hollow of the present utility model;

Fig. 4 is a gear stereogram of the present utility model;

Fig. 5 is a rotating shaft stereogram of the present utility model;

Fig. 6 is a cam stereogram of the present utility model;

Fig. 7 is a bearing pin stereogram of the present utility model;

Fig. 8 is a reversing bar stereogram of the present utility model;

Fig. 9 is an end cap stereogram of the present utility model;

Figure 10 is a wrench socket stereogram of the present utility model;

Figure 11 is a rubber sleeve stereogram of the present utility model;

Figure 12 is a mobile jib lid stereogram of the present utility model;

Figure 13 is that the cover stereogram is placed in wrench socket combination of the present utility model;

Figure 14 is that the cover stereogram is placed in wrench socket combination of the present utility model.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Fig. 1 to Figure 10 shows embodiment of the present utility model.As Fig. 1-3, carefully cone shape, the end of the operation mobile jib 1 of hollow is flat, wherein has one " 8 " font chamber 17, the diapire of this chamber 17 is provided with through hole 15,16, be provided with one along the axial arranged endoporus 18 of operation mobile jib 1 at the head of " 8 " font chamber 17, carefully coniform, hollow the front end 14 of operation mobile jib 1 be cylindric, its end wall has one " L " type groove 19, in " 8 " font chamber 17 gear 11 is housed, as Fig. 4, the round shape shoulder 114 of gear 11 matches with the through hole 15 of " 8 " font chamber 17, gear 11 links into an integrated entity with pin, as Fig. 4, gear 11 has a reducing through hole 113, in this reducing through hole 113, insert rotating shaft 9, device has a spring between the major part inner side end 92 of this rotating shaft 9 and described reducing through hole 113 inner faces 115, do not express spring herein, as Fig. 5, end in rotating shaft 9 has an annular slot 91, the side of pin has spherical pore 111, in steel ball 10 is installed, carry out interoperation with the draw-in groove 91 in the rotating shaft, when with the large end face 93 of hand pressing rotating shaft 9 and when overcoming spring force, rotating shaft 9 produces axial displacement, when its axial displacement when annular slot 91 is aimed at the spherical pore 111 of gears 11, then the steel ball of installing in this spherical pore 111 10 just falls into the annular slot of rotating shaft 9, at this moment the square hole 41 of wrench socket 4 just can insert in the square toes 116 of gear 11, meanwhile unclamp hand and press power, steel ball 10 is stuck in the semicircle orifice 43 in the square hole 41 of wrench socket 4, make gear 11, both are connected as a single entity wrench socket 4, realize that wrench socket 4 is connected with the interchangeable of pin, interior six square toes 42 of wrench socket 4 be tightened or unclamp screw six square toes and match, box spanner is promptly in running order.As Fig. 6, in " 8 " font chamber 17 cam 6 is housed also, the endoporus 67 of this cam 6 fixes with the diameter of axle 72 of bearing pin 7, the diameter of axle 72 of this bearing pin 7 matches with " 8 " font chamber 17 inner via holes 16 again, form the pivot of cam 6, cam 6 is provided with 64,66 and two

sliding surfaces

63,65 of two internal tooths, also has the chamfered groove 61,62 of two location usefulness in addition, with " 8 " font chamber 17 inwalls on elastic steel ball cooperate the location; Cam 6 has two kinds of engagements with gear 11: first kind is that the utility model is applied to right-handed thread, be positioned in the chamfered groove 61 of cam 6 under the effect of steel ball 12 at spring force of device this moment in " 8 " the font chamber 17 of operating mobile jib 1 and endoporus 18, then the internal tooth 66 of cam 6 just also can be from pinning with 11 one-tenth engagements of gear, at this time when the utility model be wrenched spiral be gear 11, wrench socket 4 both be connected as a single entity and rotate to clockwise direction, both also are connected as a single entity the operation that can tighten operation mobile jib 1 and wrench socket 4; And both are connected as a single entity when counter clockwise direction is rotated when gear 11, wrench socket 4, the tooth portion 112 of gear 11 on the sliding surface 65 of cam 6 because of can not self-locking slipping over; Second kind is that the utility model is applied to left hand thread, this moment, device was positioned in the chamfered groove 62 of cam 6 under the effect of spring force (herein failing to express) at " 8 " font chamber 17 of operation mobile jib 1 and the steel ball 12 in the endoporus 18, then the internal tooth 64 of cam 6 just also can be from pinning with 11 one-tenth engagements of gear, at this time when the utility model be wrenched spiral be gear 11, wrench socket 4 both be connected as a single entity to counterclockwise rotating, both also are connected as a single entity the operation that can tighten operation mobile jib 1 and wrench socket 4; And both are connected as a single entity when clockwise direction rotates when gear 11, wrench socket 4, the tooth portion 112 of gear 11 on the sliding surface 63 of cam 6 because of can not self-locking slipping over.

The map function that the utility model is applied to right-handed thread or left hand thread realizes by a reversing bar 5, as Fig. 8, this reversing bar 5 have an oblong aperture 52 and with bearing pin 7 rectangular 71 at an end match to merge and be connected one, ought stir turning round on the reversing bar 5 like this 51, reversing bar 5 promptly drives with its fixing cam 6 and rotates, and the angle control that cam 6 turns to positioning angular groove 62 from positioning angular groove 61 is that a side that the end by operation mobile jib 1 is flat is provided with substantially spacing retaining wall triangular in shape and realizes.

As Fig. 9, there is an end cap 8 to be used to cover " 8 " font chamber 17 middle gears 11 of operation mobile jib 1, the moving component of cam 6, described end cap 8 also has two holes 81,82, the former matches with the round shape shoulder 114 of gear 11, the latter matches with the step cylinder 73 of bearing pin 7, and described end cap 8 has two pinholes 83 to be used for being positioned to operate by pin " 8 " font chamber 17 of mobile jib 1.

As Figure 11; one rubber sleeve 2 is arranged; its endoporus 21 is enclosed within on the periphery of operation mobile jib 1; to improve operating handle; play the insulation safety function of isolating electric current again; carefully cone shape; cover 192 is placed in the wrench socket combination that is equipped with plastic production in operation mobile jib 1 inner chamber 191 of hollow; as Figure 13-14; it is the following common bases 195 that are that cover 192 structures are placed in the wrench socket combination; the elastic card 196 that both sides above the base 195 are distributed with a plurality of paired distributions fixes the wrench socket 411 of different size; 422; 433; 444; 455; 466; 477; 488; size between the elastic card 196 is a standard serialization; it is consistent with a plurality of wrench sockets of complete combination; so can put into a plurality of complete on the wrench socket combination placement cover 192; the wrench socket 411 of different size; 422; 433; 444; 455; 466; 477; 488; embody the compactedness and the reasonability of its project organization; the door bolt post 31 that is used for mobile jib lid 3 at end wall " L " the type groove 19 of operation mobile jib 1 is inserted in wherein and twists fastening, with a plurality of wrench sockets 411 in protection mobile jib 1 inner chamber 191; 422; 433; 444; 455; 466; 477; 488.

Claims

1, a kind of shell type spanner, it includes operation mobile jib (1), operation mobile jib (1) terminal end has and is used for the pin of socket connection wrench socket (4), operation mobile jib (1) shaft is provided with the complete a plurality of wrench sockets of series, it is characterized in that described operation mobile jib (1) end is flat, and be provided with " 8 " font chamber (17), the diapire of this chamber is provided with two through hole (15,16), gear (11) and cam (6) are installed in respectively in " 8 " font chamber (17), the round shape shoulder (114) of gear matches with the through hole (15) of " 8 " font chamber, the pivot of formative gear, gear (11) links into an integrated entity with pin, in reducing through hole (113) is arranged, in this reducing through hole (113), insert rotating shaft (9), device has spring between major part of this rotating shaft (9) and the reducing through hole (113), there is spherical pore (111) the pin side, steel ball (10) is installed in this spherical pore, cooperate with the draw-in groove (91) in the rotating shaft, realize interchangeable connection of pin and wrench socket (4), the endoporus (67) of cam (6) fixes with the diameter of axle (72) of bearing pin (7), the diameter of axle of this bearing pin (72) matches with " 8 " font chamber through hole (16) again, form the pivot of cam (6), cam (6) is provided with two internal tooths (64,66) and two sliding surfaces (63,65), the chamfered groove (61 that also has two location usefulness in addition, 62) with " 8 " font chamber (17) inwall on elastic steel ball cooperate the location, two kinds of engagements forming cam (6) and gear (11), the bearing pin of cam (7) outer end is connected with the reversing bar (5) that the realization spanner work of chamber (17) outside turns to.

2, require 1 described shell type spanner according to profit, it is characterized in that the wrench socket combination that is equipped with plastic production in the cylinder hollow form inner chamber (191) of described operation mobile jib (1) front end (14) places cover (192), it is the following common base (195) that is that cover (192) structure is placed in the wrench socket combination, the elastic card (196) that both sides above the base (195) are distributed with a plurality of paired distributions fixes the wrench socket (411 of different size, 422,433,444,455,466,477,488), size between the elastic card (196) is a standard serialization, a plurality of wrench sockets (411 of it and complete combination, 422,433,444,455,466,477,488) be consistent.

3, shell type spanner according to claim 1 is characterized in that the periphery of described operation mobile jib (1) front end (14) is provided with a rubber sleeve (2), and its endoporus (21) matches with the periphery of operation mobile jib (1).

4, shell type spanner according to claim 1 is characterized in that the periphery end wall of described operation mobile jib (1) is provided with two " L " type grooves (19), and the door bolt post (31) that is used for mobile jib lid (3) is inserted in wherein and twists fastening.

5, shell type spanner according to claim 1 is characterized in that the terminal end of described operation mobile jib (1) forms the spacing retaining wall of triangle in the position of reversing bar (5), cooperates with the commutation action of reversing bar (5).