CN206048040U - A kind of box spanner - Google Patents

Abstract

This utility model provides a kind of box spanner, including fixed part and drive division；Fixed part includes sleeve and the extension arm coaxial with sleeve；The cross section of extension arm is polygon；Drive division includes with the head of extension arm adaptation and with head the drive rod being connected；Head is detachably fixed with extension arm.By extension arm is arranged to section for polygonal polygon prism structure, when needing to rotate, head is fixed on the waist or other armed levers of extension arm, shorten distance of the head away from sleeve application point, be easy to apply active force, and extension arm upper end is exposed, grasp, can accurate assurance sleeve it is coaxial with nut, it is to avoid extension arm is inclined, and causes sleeve to come off from nut or damage nut and other associated components.Simultaneously existing sleeve can only mating sleeve actuating arm use, sleeve and its extension arm are set to prism structure makes which be supported the use with other spanners jointly, strengthens its suitability, with the function of replacing original sleeve actuating arm excessively single, reduces number of tools.

Description

A kind of box spanner

Technical field

This utility model is related to mounting and dismounting tool technical field, and specifically one kind has anti-drop function and angle is more The spanner of change.

Background technology

Spanner is requisite apparatus in our daily life.Common spanner has box spanner, adjustable wrench：Hook-type is pulled Handss, inner hexagon spanner, torque spanner etc..Wherein the extension arm of box spanner can be extended as needed, so as to realize to compared with The deep scope of operation carries out operation.But as its extension arm and sleeve are coaxial, apply active force inconvenience.So mostly can be in extension arm End add a drive rod, drive rod is L-shaped with extension arm.Operation is that general right hand rotation driving drive rod, left hand are pinned To determine the centre of effort, after preventing firmly, extension arm deflection, causes sleeve from operation to the intersection point of driving drive rod and extension arm Slip on face.After nut is killed with screw rod long-time corrosion, lower nut is unloaded, the right hand will apply compared with noticeable effort, equally, left What handss were supporting also just can hold sleeve with larger pressing force.Such operation process, not only expends larger manpower, and often Or understand because firmly inequality causes sleeve to slip.Simultaneously existing sleeve can only mating sleeve actuating arm use, by sleeve and its prolong The long-armed prism structure that is set to makes which be supported the use with other spanners jointly, strengthens its suitability, to replace original sleeve to drive The excessively single function of swing arm, reduces number of tools.

Utility model content

The purpose of this utility model is to solve in prior art because firmly inequality causes box spanner from the scope of operation The defect of slippage, there is provided a kind of box spanner is solving the above problems.

To achieve these goals, the technical solution of the utility model is as follows：

A kind of box spanner, the box spanner include fixed part and drive division；The box spanner include fixed part and Drive division；The fixed part includes sleeve and the extension arm coaxial with the sleeve；The cross section of the extension arm is polygon； The drive division includes with the head of extension arm adaptation and with the head drive rod being connected；The head is prolonged with described It is long-armed to be detachably fixed.

Preferably, the cross section of the sleeve is the polygon being adapted to institute head.

Preferably, can there is the cannelure coaxial with prism on the prism of the extension arm or sleeve

Preferably, the drive rod includes being fixedly and coaxially connected and left section of hollow drive rod and driving from left to right successively Right section of bar；Left section of external diameter of the drive rod is less than right section of external diameter of the drive rod；The left end of left section of the drive rod and the head Portion connects；

The spanner also includes anti-drop device；The anti-drop device includes the first drive mechanism, actuating unit, the first positioning Mechanism；

First drive mechanism includes a drive socket being set on left section of the drive rod；The drive socket exists Move left and right on left section of the drive rod；

The actuating unit is fixed between first drive mechanism and right section of drive rod；The actuating unit drives institute State drive socket to move left and right；

First detent mechanism includes slide plate, the first drive link；The slide plate slides are fixed on the front side of the head Wall, the slide plate are moved left and right in the front side wall of the head；The slide plate inserts the ring of the extension arm or sleeve when moving to left Shape groove, rotation of drive rod, the slide plate are circled along the cannelure；

First drive link includes cross frame；The cross frame includes left, right, front and rear supporting leg；The cross-shaped Frame is fixed on the head by the first elastic component；The left branch leg of the cross frame is slided with the head right-hand member and is fixed, The end of the forward and backward supporting leg of the cross frame extends upward forward and backward limiting leg respectively；The head is stuck in forward and backward spacing Between lower limb；

The front limit lower limb is provided with Ka Jiao；Dovetail groove is offered on the slide plate；The dovetail groove is wide at the top and narrow at the bottom；Institute State card angle spacing in the dovetail groove；

The right leg ends of the cross frame extend upward fastener, open up in the left end lower wall of the drive socket There is the chute horizontally slipped for fastener；The chute depth is gradually deep from left to right；When the fastener is in the chute right-hand member, institute State the first elastic component tension.

Preferably, first detent mechanism is included on the rostral anterior wall and is fixed with first baffle, cover plate；It is described The back side of slide plate offers rectangular channel；The first baffle is in the rectangular channel and in the right-hand member of the rectangular channel； It is spacing in the rectangular channel to have rectangular channel to have the second elastic component；The right-hand member of second elastic component withstands on a left side for the first baffle Side, the left end of second elastic component withstand on the left end in the rectangular channel；Under rectangular channel free state, second elastic component It is pressurized；The dovetail groove is opened in the back side of the slide plate the right side in the rectangular channel；The cover plate is fixed on described Rostral anterior wall, and the slide plate is limited between the cover plate and the rostral anterior wall；The right side of head wall is under And on offer T-slot；The cross frame left branch leg end is provided with the slide block being adapted to the T-slot.

Preferably, the head is rotated with the drive rod and is connected；The spanner also includes the second detent mechanism；Described Two detent mechanisms include the sticking department for being fixed on the head right-hand member and the second drive link for being through the drive rod inner chamber；It is described Sticking department arranges a rotating shaft；The sticking department is rotated by the left end of left section of the rotating shaft and the drive rod and is connected；The head Portion carries out 180 ° of rotations of before and after around the rotating shaft, and the fastener rotary shaft is coaxial with the rotating shaft；Second drive link Left end and the sticking department coordinate to form latch-up structure.

Preferably, the actuating unit includes protecting sleeve, the 3rd elastic component；3rd elastic component is by the drive sleeve Cylinder, right section of drive rod, protection sleeve are spacing on left section of the drive rod；Under free state, the 3rd elastic component is pressurized, from And the left side of left section of the drive rod is to drive socket extruding.

Preferably, the first slide opening is offered on left section of the drive rod；Second is offered on right section of the drive rod Slide opening；The first sliding part is fixed with the left side body of rod of second drive link；First sliding part is slided through described first Hole is fixed with the drive socket；First sliding part does side-to-side movement in first slide opening；In the described second transmission The second sliding part is fixed with the right side body of rod of bar；Second sliding part is exposed at the drive rod through second slide opening Outward；Second sliding part does side-to-side movement in second slide opening；Under free state；3rd elastic component drives described Drive socket is moved to left；The drive socket drives second drive link to lock with the sticking department by the first sliding part.

Preferably, the actuating unit includes the female turnbarrel of a tool；It is provided with left section of the drive rod With the external screw thread of the turnbarrel screw-internal thread fit；Sleeve described in turn realizes moving left and right for the drive socket.

Preferably, second drive link is through in the drive rod；The first cunning is offered on left section of the drive rod Hole；The first sliding part is fixed with the transmission club shaft；First sliding part passes through first slide opening and the transmission Sleeve is fixedly connected；Turnbarrel described in turn is moved to the left which, so that the drive socket is moved to left；The drive socket leads to Crossing the first sliding part drives second drive link to lock with the sticking department.

Preferably, the sticking department is to fix a cake in the head right-hand member；The rotating shaft is justified in the sticking department Heart position；Rectangular aperture is offered symmetrically on the forward and backward side wall of the left end of left section of the drive rod；The sticking department stretches into described In rectangular aperture, and the upper and lower side wall of the left end by left section of the rotating shaft and the drive rod is fixed；In the circle of the cake With teeth or lock hole was set on week；The left end of second drive link is the tooth engaged with the tooth, or second drive link Left end be the latch mutually locked with the lock hole.

Preferably, first elastic component, the second elastic component, the 3rd elastic component are spring；The 3rd elastic component set It is located on left section of the drive rod；The two ends of the 3rd elastic component withstand on the right side of the drive socket and the drive respectively On right section of step with left section of formation of the drive rod of lever.

This utility model compared with prior art, has the advantages that：

Head is fixed on the waist or other armed levers of extension arm, shortens distance of the head away from sleeve application point, just In applying active force, and extension arm upper end exposes, while grasping, it is only necessary to apply less lower pressure, you can accurate handle Hold sleeve coaxial with nut, it is to avoid extension arm is inclined, and causes sleeve that nut and other associated components have been taken off or damaged from nut.

By the cooperation of the cannelure on slide plate, with extension arm is arranged on head, to determine head on extension arm Highly；

By the second drive link, actuating unit, drive socket cooperation, make the head can be in any angle locking, to adapt to Different work environment, easy to operate simple, convenient for unlocking.

A kind of socket spanner of the present utility model, to be detachably connected between described fixed part and drive division, from And the fixed part after being easy to make dismounting is while use cooperatively with other driving instruments, to be applied to other occasions, and this practicality is new The drive division of type also can directly select existing box spanner, adjustable wrench：The instruments such as hook spanner, inner hexagon spanner, torque spanner, Make which carry out card with fixed part to remove and install.

Description of the drawings

Fig. 1 is the main structure diagram of fixed part in a kind of box spanner of this utility model；

Fig. 2 is the main structure diagram of drive division in a kind of box spanner of this utility model；

Fig. 3 is that fixed part and drive division coordinate the axle side structure schematic diagram after assembling；

Fig. 4 is a kind of structural representation of box spanner in embodiment 3；

Fig. 5 is the axial section structural representation of turnbarrel in Fig. 4；

Structural representations of the Fig. 6 for a kind of 4 box spanner of embodiment；

Fig. 7 is A portions thin portion mplifying structure schematic diagram in Fig. 3 and Fig. 4；

Fig. 8 is the structural representation of the first drive link in embodiment 6；

Fig. 9 is the structural representation of T-bar in embodiment 6；

Figure 10 is the structural representation of the first drive link in embodiment 7；

Figure 11 is the structural representation of the first drive link in embodiment 8；

Figure 12 is the structural representation of the second drive link in embodiment 9；

Figure 13 is the structural representation of the second drive link in embodiment 10；

Figure 14 is the structural representation of the second drive link in embodiment 11.

Specific embodiment

To make to have a better understanding and awareness architectural feature of the present utility model and the effect reached, to compared with Good embodiment and accompanying drawing coordinate detailed description, are described as follows：

The orientation title such as the left, right, front and rear mentioned in this utility model, upper and lower, with accompanying drawing 2 as reference basis.

As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of box spanner, including fixed part and drive division.Fixed part includes sleeve 71 and the extension arm 72 coaxial with sleeve.The cross section of sleeve 71 and extension arm 72 is polygon, i.e. sleeve 71 and extends Arm 72 is polygon prism, is easy to lock with drive division.Drive division include the head 1 being adapted to sleeve 71 or extension arm 72 and with head The drive rod 2 of the connection of portion 1.Head 1 is detachably mounted to any one position of extension arm 72, the such as waist of extension arm 72. Different according to the cross sectional shape of extension arm 72, the structure of head 1 is also different.Drive division can adopt another middle spanner, such as ratchet wrench Handss, open-end wrench, adjustable wrench etc..The extension arm 72 that the present embodiment is given is six prisms, but is not limited only to this, as long as can be real Existing head 1 is locked with extension arm 72.

Drive rod 2 includes being fixedly and coaxially connected and left section 21 of hollow drive rod and right section of drive rod from left to right successively 22；Left section of 21 external diameters of drive rod are less than right section of 22 external diameters of drive rod；The left end that left section 21 of drive rod is connected with head 1.

Spanner also includes anti-drop device；Anti-drop device includes the first drive mechanism 3, actuating unit 4, the first detent mechanism 5.

Wherein, the first drive mechanism 3 includes a drive socket 31 being set on left section 21 of drive rod；Drive socket 31 exists Move left and right on left section 21 of drive rod.

Actuating unit 4 is fixed between right section 22 of the first drive mechanism 3 and drive rod；Actuating unit 4 drives drive socket 31 move left and right.

First detent mechanism 5 includes slide plate 51, cover plate 52, the first drive link 53.

As shown in fig. 6, first baffle 11 is fixed with 1 front side wall of head, the back side of slide plate 51 is provided with rectangular channel 511；First baffle 11 is in rectangular channel 511 and positioned at the right side of rectangular channel 511.It is spacing in rectangular channel 511 to have the second bullet Property part 54, the right-hand member of the second elastic component 54 withstand on the left side wall of first baffle 11, and the left end of the second elastic component 54 withstands on rectangular channel 511 left side wall.Under free state, the second elastic component 54 is pressurized.At the back side of slide plate 51 and in the right side of rectangular channel 511 Dovetail groove 55 is offered, dovetail groove 55 is wide at the top and narrow at the bottom.Cover plate 52 is fixed on 1 front side wall of head, and slide plate 51 is limited in cover plate Between 52 and 1 front side wall of head.

Multiple tracks cannelure 7a is offered on sleeve 71 and extension arm 72.Slide plate 51 is moved left and right under external force, sliding The distance that plate 51 is moved to left is about the depth of cannelure 7a, is inserted in cannelure 712 by slide plate 51, realizes the mesh of the positioning of head 1 's.

The external force that slide plate 51 is moved to the left comes from the first drive link 53 and drive socket 31.Specially：

First drive link 53 includes cross frame 531；Cross frame 531 includes left, right, front and rear supporting leg.Cross frame 531 are fixed on head 1 by the first elastic component 532.The left branch leg of cross frame 531 is slided with 1 right-hand member of head and is fixed, specifically For：

1 right side wall of head offers T-slot 12 from bottom to top；531 left branch leg end of cross frame is provided with suitable with T-slot 12 The slide block 5311 matched somebody with somebody.T-slot 12 it is spacing under, the first drive link 53 is only capable of moving up and down, it is impossible to move left and right.

The right leg ends of cross frame 531 extend upward fastener 5313, open in the left end lower wall of drive socket 31 It is provided with the chute 311 horizontally slipped for fastener 5313；311 depth of chute is gradually deep from left to right.Fastener 5313 is right in chute 311 During end, 532 tension of the first elastic component.

The end of the forward and backward supporting leg of cross frame 531 extends upward forward and backward limiting leg respectively；Head 1 is stuck in forward and backward Between limiting leg, head 1 have the stopper slot being adapted with front and back limiting leg so that in front and back limiting leg in stopper slot on move down It is dynamic.Front limit lower limb is provided with card angle 5312；Card angle 5312 protrudes from the stopper slot of head 1 and spacing in dovetail groove 55.

When fastener 5313 is in 311 right-hand member of chute, under the reset response of the first elastic component 532, on cross frame 531 Move, cause top of the card angle 5312 in dovetail groove 55, i.e., wider position is in the presence of the second elastic component 54 resets, sliding Plate 51 is moved to left, and in insertion cannelure 7a, realizes the function that head 1 does not glide.The fastener 5313 that this utility model is provided is bulb Post, to realize being in rotary course during each angle with transmission cylinder 31 with the relative slip of minimum resistance.

Wherein drive socket 31 is driven by actuating unit 4 and is moved to left, and actuating unit 4 has various ways.No matter head 1 with Drive rod 2 is to be fixedly connected, or rotates connection, and actuating unit 4 can be divided into two kinds of forms, and a kind of pushing structure 41 is a kind of Rotational structure 42.It is specific as follows：

Embodiment 1

As shown in figure 4, the actuating unit of pushing structure, including protection sleeve 411, the 3rd elastic component 412；3rd elastic component 412 are transmitted right section 22 of sleeve 31, drive rod, protect sleeve 411 spacing on left section 21 of drive rod.Under free state, the 3rd Elastic component 412 is pressurized, so as to the left side of left section 21 of drive rod is to the extruding of drive socket 31.

Embodiment 2

As shown in figure 5, the actuating unit 4 of rotational structure, has female turnbarrel 421 including one；In drive rod It is provided with the external screw thread 422 with turnbarrel screw-internal thread fit for left section 21；Turn turnbarrel 421 realizes a left side for drive socket 31 Move right.In order to realize that drive socket 31 is linked with turnbarrel 421, this utility model is by drive socket 31 and turnbarrel 421 are both designed as hollow cylinder, and are designed to mutually socket in the right-hand member of drive socket 31 and the left end of turnbarrel 421 Rotation-limited structure, i.e. the right-hand member outer wall in drive socket 31 arranges annular card key 31a, in 421 right-hand member inwall of turnbarrel Be provided with fastener 31a limiting cards and annular slot 421a, be socketed by drive socket 31 and turnbarrel 421 and by card The position limiting structure of groove 421a and fastener 31a, realizes that the rotation of turnbarrel 421 drives drive socket 31 or so to move when moving left and right It is dynamic.

When head 1 and drive rod 2 are rotated to be connected, for locking head 1, in addition it is also necessary to by the second detent mechanism 6.Specifically Structure is：

Second detent mechanism 6 includes the sticking department 61 for being fixed on 1 right-hand member of head and is through the second transmission of 2 inner chamber of drive rod Bar 62；Sticking department 61 arranges a rotating shaft；Sticking department 61 is connected by the left end rotation of left section 21 of rotating shaft and drive rod.Head 1 encloses 180 ° of rotations of before and after are carried out around the shaft, and 5313 rotary shaft of fastener is coaxial with rotating shaft；The left end and sticking department of the second drive link 62 61 coordinate to form latch-up structure.

Embodiment 3

As shown in figure 4, when the such as pushing structure of embodiment 1 of actuating unit 4, in order to realize that head 1 is locked, need to drive The first slide opening 211 is offered on left section 21 of bar, the second slide opening 221 is offered on right section 22 of drive rod.Second drive link 62 The first sliding part 621 is fixed with the body of rod of left side；First sliding part 621 is fixed through the first slide opening 211 with drive socket 31；The One sliding part 621 does side-to-side movement in the first slide opening 211；The second slip is fixed with the right side body of rod of the second drive link 62 Portion 622；Second sliding part 622 is exposed at outside drive rod 2 through the second slide opening 221, pushes or pull on the second sliding part 622 Side-to-side movement is done in two slide openings 221.Under free state；As the 3rd elastic component 42 is pressurized, the 3rd elastic component 42 drives and passes Moving sleeve 31 is moved to left；Drive socket 31 drives the second drive link 62 to lock with sticking department 61 by the first sliding part 621.Meanwhile, After drive socket 31 is moved to left, fastener 5313 is in 311 right-hand member of chute, under the reset response of the first elastic component 532, makes Ka Jiao 5312 tops in dovetail groove 55, i.e., wide position, then under the reset response of the second elastic component 54, slide plate 51 is moved to left, it is real Existing anti-drop function.The second sliding part 622 is pulled to the right, you can unblock.

Embodiment 4

As shown in Figure 5, Figure 6, when the such as rotational structure of embodiment 2 of actuating unit 4, need to offer on left section 21 of handle First slide opening 211；The first sliding part 621 is fixed with transmission club shaft；First sliding part 621 is through the first slide opening 211 and biography Moving sleeve 31 is fixedly connected；Turn turnbarrel 421 is moved to the left which, in annular card key 31a and the limit of annular slot 412a Position is rotatably assorted down, moves to left drive socket 31；Drive socket 31 drives the second drive link 62 and lock by the first sliding part 621 Determine portion 61 to lock.Meanwhile, after drive socket 31 is moved to left, fastener 5313 is in 311 right-hand member of chute, in answering for the first elastic component 532 Position effect under, make card angle 5312 in dovetail groove 55 top, i.e., wide position, under the reset response of the second elastic component 54, Slide plate 51 is moved to left, and realizes anti-drop function.Conversely, turn turnbarrel 421 to the right, in annular slot 421a and annular fastener Under the spacing cooperation of 31a, turnbarrel 421 drives drive socket 31 to move to right, then because the first sliding part 621 and drive socket 31 It is fixedly connected, drive socket 31 drives the second drive link 62 to move to right during moving to right, you can realize unblock.

Embodiment 5

The mechanism of the either structure of embodiment 3, or embodiment 4, sticking department 61 can be to fix in 1 right-hand member of head One cake；Rotating shaft is in 61 home position of sticking department；Rectangle is offered symmetrically on the forward and backward side wall of the left end that left section 21 of drive rod Opening；Sticking department 61 is stretched in rectangular aperture, and the upper and lower side wall of the left end by left section 21 of rotating shaft and drive rod is fixed. The provided circumferentially about with teeth or lock hole of cake；The left end of the second drive link 62 is the tooth engaged with tooth, or the second drive link 62 Left end be the latch mutually locked with lock hole, with realize locking.

First elastic component 532 of this utility model offer, the second elastic component 54, the 3rd elastic component 42 are spring.Wherein 3rd elastic component 42 is set in drive rod left section 21 and actuating unit 4 between；The two ends of the 3rd elastic component 42 withstand on transmission respectively On right section 22 step with left section 21 formation of drive rod in the right side of sleeve 31 and drive rod.

Embodiment 6

As shown in Figure 8, Figure 9, the first drive link 53 that this utility model is provided is not realized upwards by the second elastic component 54 Motion.Specially：531 points of cross frame is conehead bar 531a and drive rod 531b, rotation convergence part 531c.Conehead bar 531a is right Hold to extend the conehead in chute 311 upwards, the other end is rotated with the rectangular channel of 1 right side bottom of head and is connected, bored The rotating shaft of head rod 531a and the shaft parallel of head.Drive rod 531b is a U-shaped bar, and head is stuck in U-shaped bar.Before U-shaped bar Leg is in dovetail groove.Rotation convergence part 531c includes a T-bar 531c1, limits with two in the cross bar of T-bar 531c1 Position ring 531c2, the montant bottom of T-bar is connected with the rotation of conehead bar 531a.The rotating shaft of T-bar 531c1 and two it is spacing Uniform 1 shaft parallel of head of circle center line connecting of ring 531c2.

When conehead is in chute right-hand member (compared with deep end), conehead bar 531a right-hand members are rotated up, and convergence part is rotated 531c is moved upwards, and rotation convergence part 531c drives drive rod 531b to move upwards, and the leg upper end of drive rod 531b enters ladder 55 top of shape groove, i.e., wider part, under the reset response of the second elastic component, slide plate 51 is moved to left.

Embodiment 7

As shown in Figure 10, the first drive link 53 that this utility model is provided is not realized transporting upwards by the second elastic component 54 It is dynamic, can also realize in the following way.

Rotate with one end of L-shaped the first drive rod 53A at the top of front support leg and be connected, L-shaped the first drive rod 53A's is another One end is rotated with one end of the second drive rod 53B and is connected, and the other end of the second drive rod 53B is rotated with the right-hand member of slide plate 51 and connected Connect.The rotating shaft of the first drive rod 53A and the second rotating bar is each perpendicular to the rotating shaft of head.When conehead is in chute right-hand member (compared with Depths), under the reset response of the first elastic component, move and drive the first drive rod 53A to rotate on front support leg, the first drive rod 53A drives the second drive rod 53B to be moved to the left, and the second drive rod 53B drives slide plate 51 to move to left.

Embodiment 8

As shown in figure 11, the first drive rod 53 by gear drive, can realize the purpose of the locking of slide plate 51 and unblock. A change-speed gearing 53C is fixed in front support leg left pivot movement in head top face.The left side of front support leg is with nibbling with change-speed gearing 53C The tooth of conjunction, 51 right-hand member lower surface of slide plate is with the tooth that 53C is engaged with change-speed gearing.

When conehead is in chute right-hand member (higher depth), under the reset response of the first elastic component, move and band on front support leg Dynamic change-speed gearing is rotated counterclockwise, and the change-speed gearing for rotating counterclockwise drives slide plate 51 to move to left.

The various structures of the first drive rod 53 in above-described embodiment 6 to 8, arbitrarily can coordinate with first angle 5312 with Dovetail groove 15 and the second elasticity 54 are realizing purpose that slide plate is moved left and right.

Embodiment 9

As shown in figure 12, the unlocking manner of the second detent mechanism 6, can also be oblique by one is arranged on the second drive link 62 Face 62a, is vertically arranged a pressure ram 6b on drive rod right end sidewalls, and the bottom of pressure ram 6a arranges one with the second transmission The inclined-plane 6b1 that inclined-plane on bar 62 is engaged.When unblock is needed, pressure ram 6a, the inclined-plane 6b1 of pressure ram 6a and second are pushed The extruding force of the inclined-plane 62a of drive link 62 mutually slide-shaped paired second drive link 62, extruding force drive the second drive link 62 to Move right, so as to realize unblock.

Embodiment 10

As shown in figure 13, the unlocking manner of the second detent mechanism 6, can also be by being provided with the second drive link 62 Tooth, horizontally rotates in right section of drive rod and is fixed with a swingle 6A, a gear 6A1, gear 6A1 and are fixed on swingle 6A Tooth engagement on two drive links 62, rotates swingle, by the engagement of tooth on gear 6A and the second drive link 62, so as to reality Existing second drive link 62 moves to right unblock.

Embodiment 11

As shown in figure 14, the unlocking manner of the second detent mechanism 6, can also be fixed by the right-hand member in the second drive link 62 One right angle drive rod 62C, realizes unblock.Specially：At right angle, the right angle of drive rod 62C arranges a rotating shaft 62C1, turns Axle 62C1 is fixed on right section of drive rod, and one end of right angle drive rod 62C is rotated with the right-hand member of the second drive link 62 and is connected, another End is connected with pressing lever 62C2, and pressing lever 62C2 is stretched out outside drive rod.By pressing pressing lever 62C2, right angle drive rod 62C is made One rotating shaft 62C1 is rotated, and so as to drive the second drive link 62 to move to right, realizes unblock.Have been shown and described above of the present utility model Ultimate principle, principal character and advantage of the present utility model.

It should be understood by those skilled in the art that, this utility model is not restricted to the described embodiments, above-described embodiment and Simply principle of the present utility model described in description, this practicality on the premise of without departing from this utility model spirit and scope New also to have various changes and modifications, these changes and improvements are both fallen within the range of claimed this utility model.This The protection domain that utility model is required is defined by appending claims and its equivalent.

Claims (10)

1. a kind of box spanner, it is characterised in that：The box spanner includes fixed part and drive division；The fixed part includes set Cylinder and the extension arm coaxial with the sleeve；The cross section of the extension arm is polygon；The drive division includes prolonging with described The head of long-armed adaptation and the drive rod being connected with the head；The head is detachably fixed with the extension arm.

2. a kind of box spanner according to claim 1, it is characterised in that：The cross section of the sleeve is and the head The polygon of adaptation.

3. a kind of box spanner according to claim 2, it is characterised in that：It is all provided with the prism of the extension arm or sleeve It is equipped with the cannelure coaxial with prism.

4. a kind of box spanner according to claim 3, it is characterised in that：The drive rod includes together from left to right successively Axle is fixedly connected and left section of hollow drive rod and right section of drive rod；Left section of external diameter of the drive rod is less than right section of the drive rod External diameter；The left end of left section of the drive rod is connected with the head；

The spanner also includes anti-drop device；The anti-drop device includes the first drive mechanism, actuating unit, the first localization machine Structure；

First drive mechanism includes a drive socket being set on left section of the drive rod；The drive socket is described Move left and right on left section of drive rod；

The actuating unit is fixed between first drive mechanism and right section of drive rod；The actuating unit drives the biography Moving sleeve is moved left and right；

First detent mechanism includes slide plate, the first drive link；The slide plate slides are fixed on the front side wall of the head, institute The front side wall that slide plate is stated in the head is moved left and right；The slide plate inserts the sleeve or the annular on extension arm when moving to left Groove, rotation of drive rod, the slide plate are circled along the cannelure；

First drive link includes cross frame；The cross frame includes left, right, front and rear supporting leg；The cross frame leads to Cross the first elastic component to be fixed on the head；The left branch leg of the cross frame is slided with the head right-hand member and is fixed, described The end of the forward and backward supporting leg of cross frame extends upward front limit lower limb, rear limiting leg respectively；The head is stuck in front limit Between lower limb, rear limiting leg；

The front limit lower limb is provided with Ka Jiao；Dovetail groove is offered on the slide plate；The dovetail groove is wide at the top and narrow at the bottom；The card Angle is spacing in the dovetail groove；

The right leg ends of the cross frame extend upward fastener, offer confession in the left end lower wall of the drive socket The chute that fastener horizontally slips；The chute depth is gradually deep from left to right；When the fastener is in the chute right-hand member, described the One elastic component tension.

5. a kind of box spanner according to claim 4, it is characterised in that：First detent mechanism is included in the head First baffle, cover plate are fixed with portion's front side wall；The back side of the slide plate offers rectangular channel；The first baffle is in described In rectangular channel and in the right-hand member of the rectangular channel；It is spacing in the rectangular channel to have rectangular channel to have the second elastic component；Described The right-hand member of two elastic components withstands on the left side of the first baffle, and the left end of second elastic component withstands on a left side for the rectangular channel End；Under rectangular channel free state, second elastic component is pressurized；The dovetail groove is opened in the back side of the slide plate and in institute State the right side of rectangular channel；The cover plate is fixed on the rostral anterior wall, and by the slide plate be limited in the cover plate with it is described Between rostral anterior wall；The right side of head wall offers T-slot from bottom to top；The cross frame left branch leg end be provided with The slide block of the T-slot adaptation.

6. a kind of box spanner according to claim 5, it is characterised in that：The head is rotated with the drive rod and is connected Connect；The spanner also includes the second detent mechanism；Second detent mechanism includes the sticking department for being fixed on the head right-hand member With the second drive link for being through the drive rod inner chamber；The sticking department arranges a rotating shaft；The sticking department is by the rotating shaft Rotate with left section of left end of the drive rod and be connected；The head carries out 180 ° of rotations of before and after, and the card around the rotating shaft Part rotary shaft is coaxial with the rotating shaft；The left end of second drive link coordinates to form latch-up structure with the sticking department；Institute It is to fix a cake in the head right-hand member to state sticking department；The rotating shaft is in the sticking department home position；The drive rod Rectangular aperture is offered symmetrically on the forward and backward side wall of left section of left end；The sticking department is stretched in the rectangular aperture, and is passed through The upper and lower side wall of the left end of left section of the rotating shaft and the drive rod is fixed；In the provided circumferentially about with teeth of the cake or lock Determine hole；The left end of second drive link is the tooth engaged with the tooth, or the left end of second drive link is and the lock Determine the latch that hole mutually locks.

7. a kind of box spanner according to claim 6, it is characterised in that：The actuating unit include protecting sleeve, the Three elastic components；3rd elastic component is spacing in left section of the drive rod by the drive socket, right section of drive rod, protection sleeve On；Under free state, the 3rd elastic component is pressurized, so as to be at left section of the drive rod to drive socket extruding Left side.

8. a kind of box spanner according to claim 7, it is characterised in that：First is offered on left section of the drive rod Slide opening；The second slide opening is offered on right section of the drive rod；The first cunning is fixed with the left side body of rod of second drive link Dynamic portion；First sliding part is fixed through first slide opening with the drive socket；First sliding part is described Side-to-side movement is done in one slide opening；The second sliding part is fixed with the right side body of rod of second drive link；Described second slides Portion is exposed at outside the drive rod through second slide opening；Second sliding part does left and right fortune in second slide opening It is dynamic；Under free state；3rd elastic component drives the drive socket to move to left；The drive socket passes through the first sliding part band Move second drive link to lock with the sticking department.

9. a kind of box spanner according to claim 6, it is characterised in that：The actuating unit includes that one has female thread Turnbarrel；The external screw thread with the turnbarrel screw-internal thread fit is provided with left section of the drive rod；Cover described in turn Cylinder realizes moving left and right for the drive socket.

10. a kind of box spanner according to claim 9, it is characterised in that：Second drive link is through the driving In bar；The first slide opening is offered on left section of the drive rod；The first sliding part is fixed with the transmission club shaft；Described One sliding part is fixedly connected through first slide opening with the drive socket；Turnbarrel described in turn is moved to the left which, So that the drive socket is moved to left；The drive socket drives second drive link and the sticking department by the first sliding part Locking.