CN105328607B - A kind of spanner - Google Patents

Abstract

The invention discloses a kind of spanners, its structure includes guide rod, the first claw being mounted on guide rod, the slide unit being set on guide rod, is mounted on slide unit and has first position and the second position with the second claw of the first claw cooperation and the tooth block for being arranged on slide unit and cooperating with the guide rod, the tooth block；When tooth block is in the first position, tooth block can be slided along guide rod towards the first claw, and be locked up in the direction away from the first claw；When tooth block is in the second position, tooth block can be slided along guide rod toward and away from the first claw.

Description

A kind of spanner

Technical field

The present invention relates to a kind of hand-operated tools more particularly to a kind of spanners, can be used for clamping plate, nut, especially steel The pipe fittings such as pipe, plastic tube.

Background technique

In daily life or work, often to use spanner gripping objects, for example, the pipe fittings such as clamping steel pipe, plastic tube with Realize the elastic installation or removal of pipe fitting.The spanner of traditional clamping pipe fitting, such as pipe vice, generally by regular jaw, adjustable clamp The components such as mouth, clamp handle, adjusting nut composition, regular jaw are fixed together with clamp handle, and structure is complicated.Traditional pipe vice relies on spiral shell The folding of screw thread pair between female and moving jaw being driven to realize jaw.In use, constantly rotating adjusting nut, passes through The sliding for adjusting moving jaw makes the amount of opening size of the relatively fixed jaw of moving jaw generate variation, and therefore, operation is very not Just；Meanwhile the speed of the folding of traditional pipe vice jaw is also limited by screw thread pair screw pitch, cannot achieve quickly opening for jaw It closes.

Summary of the invention

In view of the above drawbacks of the prior art, technical problem to be solved by the invention is to provide a kind of structures simply, The spanner that folding is flexible, adjustment speed is fast, easy to use and reliable, which can be used for clamping and rotary tube piece, it can also be used to press from both sides Maintain an equal level the other shapes of objects such as plate, nut.

To achieve the above object, the present invention provides a kind of spanner, structure includes guide rod, is mounted on the guide rod First claw, the slide unit being set on the guide rod, and be mounted on the slide unit and with first claw Second claw of cooperation, which is characterized in that the spanner further includes being arranged on the slide unit and cooperating with the guide rod Tooth block, the tooth block have first position and the second position；

The spanner is configured to: when the tooth block is in the first position, the tooth block is locked up；When the tooth When block is in the second position, the tooth block is unlocked.

Further, the first position refers to the location of described tooth block when the tooth block is engaged with the guide rod； The second position refers to the location of described tooth block when the tooth block and the guide rod are detached from.

Further, when the tooth block is in the first position, the tooth block can be along the guide rod towards described The sliding of one claw, and be locked up in the direction away from first claw；It is described when the tooth block is in the second position Tooth block can be slided along the guide rod toward and away from first claw.

Further, the site of engagement of the guide rod and the tooth block has unidirectional tooth, and the unidirectional tooth, which has, unidirectionally leads To effect: when pushing the slide unit towards first claw, the tooth block can be sliding along the flank of tooth of the unidirectional tooth It is dynamic, so that the slide unit is moved along the guide rod close to first claw, described in pushing away from first claw When slide unit, the tooth block is prevented from along the sliding of the flank of tooth of the unidirectional tooth, so that the slide unit is along the guide rod Movement be locked up.

Further, the slide unit has the inclined-plane that cooperate with the tooth block, the inclined-plane with described in the guide rod There is the first angle, when the spanner clamping workpiece, first angle enables the tooth block between inclined-plane and the guide rod It is hard to bear to perpendicular to the guide rod and the active force of the guide rod is directed toward, the active force is conducive to the tooth block and the guide rod Engagement.

Further, first angle is set smaller than 90 °.

Further, the site of engagement of the guide rod and the tooth block has unidirectional tooth, and the unidirectional tooth, which has, hinders institute The flank of tooth that tooth block is slided along the direction away from first claw is stated, there is the second angle between the flank of tooth and the inclined-plane, Second angle makes the unidirectional tooth still be able to lock the tooth block when deformation occurs.

Further, second angle is set greater than 0 °.

Further, reserved space is provided between the tooth block and the slide unit, the reserved space makes described Tooth block can rotate an angle, and the angle can make the tooth block overcome the tooth block generated by second angle and institute The locking of guide rod is stated, so that the tooth block and the guide rod be made to be detached from；The reserved space can make on the tooth block simultaneously Multiple teeth look for position to engage with the guide rod automatically.

Further, the spanner further includes connecting rod, and the connecting rod is arranged in the two sides of the guide rod, and with the tooth block Connection.

Further, the spanner further includes button, is connected between the button and the tooth block by the connecting rod, when The button is pressed, i.e., when applying pressure to the button, the pressure can be passed to the tooth block by the connecting rod, make institute It states tooth block and the guide rod is detached from；When the pressure of the revocation to the button, the tooth block reset is engaged with the guide rod.

Further, there is third angle between the connecting rod and the inclined-plane, at the same the connecting rod and the guide rod it Between there is the 4th angle, the pressure that the third angle and the 4th angle enable the button to be subject to overcomes described Frictional force between tooth block and the inclined-plane, so that the tooth block and the guide rod be made to be detached from.

Further, the third angle and the 4th angle are disposed as less than 90 °.Further, the spanner It further include button and connecting rod, the button, the connecting rod and the tooth block form a connection piece, and the connector is set in described On guide rod.

Further, the slide unit has the first part extended along the guide rod to first claw, described Second claw is in the first part.

Further, the slide unit also has the second part being set on the guide rod, the second part tool There is setting cavity therein, the connector is arranged in the cavity.

Further, for a part of the button in the cavity, another part protrudes from the slide unit Except.

Further, second claw has hangers, and the hangers is embedded in the second part, and by pin rod with The second part is fixedly connected.

Further, the spanner further includes the clamping surface being arranged on first claw and second claw.

Further, first claw is connect by fixed tip with the guide rod, is provided with card slot on the fixed tip, The card slot is for installing snap ring.

Further, it is provided with the first spring between first claw and the guide rod, when clamping workpiece, described One spring can push first claw, make to generate pretightning force on the workpiece.

Further, the spanner further includes second spring, and the second spring can apply pressure to the tooth block.

Further, one end of the second spring is contacted with the tooth block, and the other end is contacted with cover board, the cover board with The slide unit is fixedly connected.

Further, there is the first recess portion, the cover board is embedded in first recess portion, described on the outside of the slide unit Cover board is fixedly connected by screw with the slide unit.

Further, the screw is flat head screw, has gap between the screw and the tooth block.

Further, be additionally provided on the slide unit convenient for operator push the thumb of the slide unit against Portion, thumb butting section surface have the second striped, are the groove being parallel to each other between second striped, for increasing behaviour The friction of the finger of author and the thumb butting section.

Further, first spring is helical spring.

Further, the button Face is provided with the first striped, is the groove being parallel to each other between first striped, For increasing the friction between the finger of operator and the button.

Further, clamping surface setting is with teeth, the tooth for increase the clamping surface and caught workpiece it Between friction.

Further, the second spring is pressure spring.

Further, two sides of the guide rod are provided with recess, and the recess extends to the entire guide rod, this Sample, the connecting rod of the guide rod two sides and the side incomplete contact between of the guide rod, it is sliding along the guide rod convenient for the tooth block It is dynamic.

Further, the guide rod has grip part, and the grip part is a sheath, and the sheath is covered in the guide rod On.

Further, the sheath is fixedly connected by fastener with the guide rod.

Further, the fastener is made of nuts and bolt.

Further, there is the second recess portion, the nut is in second recess portion on the sheath.

Further, also there is hanging hole on the sheath, placed for hanging the spanner.

Spanner of the invention has the advantage that

(1) by the quick sliding between guide rod and tooth block, it can be achieved that the jaw i.e. spacing of the first claw and the second claw From quick adjusting.

(2) the unidirectional tooth of guide rod and tooth block site of engagement has unidirectional guiding role, and the is only allowed when pushing slide unit Two claws towards and cannot be mobile away from the first claw, therefore the second claw will not be automatically far from the first claw when clamping workpiece And clipped object part is made to fall off, thus can tightly clamp clipped object part.

(3) by applying pressure to button, it so that tooth block and guide rod is detached from, be conducive to the fast velocity modulation of jaw Section；In addition, the elastic force effect of second spring can promptly be such that tooth block reset engages with guide rod when cancelling the pressure to button.

(4) angle of the inclined-plane of slide unit and guide rod length direction is set smaller than 90 °, can increase the tooth on tooth block With the pressure between the tooth on guide rod, so that spanner tooth block in clamping workpiece engages more preferably with guide rod.

(5) connecting rod and guide rod length direction angle is less than 90 ° and the angle on the inclined-plane of connecting rod and slide unit is less than 90 °, as long as this makes spanner be easy to overcome frictional force along sliding to button application effect tooth block in non-clamping workpiece The inclined-plane of dynamic component glides, to realize tooth block and being rapidly separated for guide rod and unlock.

(6) the unidirectional tooth on tooth block and guide rod has the flank of tooth for hindering tooth block towards the sliding of the first claw, the flank of tooth and cunning Angle between the inclined-plane of dynamic component is set greater than 0 °, even if this makes spanner, the unidirectional tooth in clamping workpiece deforms still Tooth block can be lockked without departing from guide rod.

It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with It is fully understood from the purpose of the present invention, feature and effect.

Detailed description of the invention

Fig. 1 is the schematic diagram of the spanner of a preferred embodiment of the invention；

Fig. 2 is another schematic diagram of the spanner of a preferred embodiment of the invention；

Fig. 3 is the first claw of spanner and the schematic diagram of guide rod junction；

Fig. 4 is the exploded view of spanner shown in FIG. 1；

Fig. 5 is the partial enlarged view of Fig. 2；

Fig. 6 is schematic diagram of the spanner shown in FIG. 1 when the second claw is close to grip part, shows pushing direction B；

Fig. 7 is schematic diagram of the spanner shown in FIG. 1 when the second claw is close to the first claw, shows pushing direction B；

Fig. 8 is schematic diagram of the spanner shown in FIG. 1 when the second claw is close to the first claw, shows pushing direction D；

Fig. 9 is schematic diagram of the spanner shown in FIG. 1 when the second claw is close to grip part, shows pushing direction D；

Schematic diagram when Figure 10 is the spanner clamping pipe fitting of present pre-ferred embodiments；

Figure 11 is the partial enlarged view of Figure 10.

Specific embodiment

Below with reference to drawings and examples, the invention will be further described.

Fig. 1 and Fig. 2 is the schematic diagram of the spanner 100 of a preferred embodiment of the invention, and structure includes: guide rod 2, peace The first claw 1 on guide rod 2, the slide unit 31 being set on guide rod 2, and be mounted on slide unit 31 and first The second claw 32 that claw 1 cooperates, spanner 100 further include the tooth block 34 that 31 inside of slide unit is arranged in and cooperates with guide rod 2, Tooth block 34 has first position and the second position.

Spanner 100 is configured to: when tooth block 34 is in first position, tooth block 34 is engaged with guide rod 2, and tooth block 34 can be along leading Bar 2 is slided towards the first claw 1, and is locked up in the direction away from the first claw 1；When tooth block 34 is in the second position, tooth Block 34 and guide rod 2 are detached from, and tooth block 34 can be slided along guide rod 2 toward and away from the first claw.

In the embodiment of the present invention, first position refers to the location of tooth block 34 when tooth block 34 is engaged with guide rod 2；Second Position refers to the location of tooth block 34 when tooth block 34 and guide rod 2 are detached from.

As shown in Fig. 2, the site of engagement of guide rod 2 and tooth block 34 has unidirectional tooth 15, which has unidirectional guiding Effect: when pushing slide unit 31 towards the first claw 1, tooth block 34 can be slided along the flank of tooth of unidirectional tooth 15, to slide Component 31 and the second claw 32 are moved along guide rod 2 close to the first claw 1, when pushing slide unit 31 away from the first claw 2, tooth Block 34 is prevented from along the sliding of the flank of tooth of unidirectional tooth 15, so that slide unit 31 and the second claw 32 are locked along the movement of guide rod 2 Only.

As shown in figure 3, the first claw 1 passes through fixed tip 12 and guide rod 2 in the spanner 100 of presently preferred embodiments of the present invention Pivot joint, the second claw 32 are fixedly connected with slide unit 31, and the first claw 1 and the cooperation of the second claw 32 are for clamping pipe fitting, putting down The workpiece of different shapes such as plate, nut.The first spring 13 is additionally provided between first claw 1 and guide rod 2, the first spring 13 is spiral shell Spring is revolved, in other embodiments, the first spring 13 also can be replaced flexible washer.When the first claw 1 and the second claw When 32 cooperation clamping workpiece 300, the opening of jaw makes the first claw pivot a low-angle along the opposite direction of arrow A, and at this time the One spring 13 is compressed, and the first spring 13 pushes the first claw 1 along the direction arrow A under restoring force effect, makes 1 He of the first claw Pretightning force is generated on workpiece 300 between second claw 32, since the position of 32 clamping workpiece of the first claw 1 and the second claw is equal With teeth, 300 surface of tooth workpiece pressing under the action of pretightning force is set, thus spanner 100 when carrying out twisting operation tooth with It will not skid between workpiece 300.

As shown in figure 4, spanner 100 includes guide rod 2, the first claw 1, the second claw 32, guide rod 2 has a grip part 200, Grip part 200 is a sheath 21, can be made of leather, plastic or other material.The shape of sheath 21 meets ergonomics, Ke Yitao On guide rod 2, and it is convenient to dismantle from guide rod 2.Sheath 21 is fixedly connected by fastener with guide rod 2, more preferably, fastener For bolt 22 and nut 26.A hanging hole 23 is additionally provided on sheath 21, when 100 use of spanner finishes, can use hanging hole 23 will The spanner 100 hangs up placement.More preferably, there is the second recess portion 210, second recess portion is just by bolt 22 on sheath 21 Head insertion, on the one hand makes sheath 21 more attractive, while avoiding injuring because the head of bolt 22 protrudes from the surface of sheath 21 The finger of operator.

First claw 1 is pivotally connected by fixed tip 12 and guide rod 2.Card slot 120 is provided on fixed tip 12, snap ring 121 is placed in In card slot 120, in this way, fixed tip 12 will not fall off out of guide rod 2 and the first claw 1 mounting hole.First claw 1 and guide rod 2 Between be additionally provided with the first spring 13, as previously mentioned, under the action of the restoring force of the first spring 13, the first claw 1 and second Claw 32 can generate pretightning force to caught workpiece in clamping workpiece, so that spanner 100 will not generate skidding when being twisted.

Caliper 100 further includes slide unit 31, and slide unit 31 includes first part 310, and first part 310 is along guide rod 2 Lower part extend to the first claw 1, end is to have a slot close to the position of the first claw 1, and the second claw is equipped in slot 32.As shown in figure 4, the side of the second claw 32 has clamping surface 111, cooperate with the clamping surface 110 of the first claw, two Clamping surface is respectively provided with teeth, and the shape and size of these teeth can be identical or not exactly the same, and the tooth is for increasing two Friction between a clamping surface and clipped object part.The other side of second claw 32 has hangers 320, the insertion sliding of hangers 320 In the slot of the first part 310 of component 31, and it is fixedly connected by pin rod 321 with first part 310.

Slide unit 31 further includes second part 311, and second part 311, which has, is arranged cavity 312 therein, in cavity 312 are internally provided with tooth block 34, and tooth block 34 is connected by connecting rod 39 with button 33, connecting rod 39 and tooth block 34 or connecting rod 39 and button It is connected between 33 using pin 40.At least two, connecting rod 39, it is connected to the two sides (ginseng of button 33 and tooth block 34 in parallel to each other See Fig. 5).The connector that button 33, connecting rod 39 and tooth block 34 form is located in cavity 312, and guide rod 2 is worn simultaneously through the connector Cross second part 311.Connecting rod 39 is located at the two sides of guide rod 2, button 33 be located at the top of guide rod 2 and between guide rod 2 there are Gap.The lower part of guide rod 2 and the upper surface of tooth block 34 all have unidirectional tooth 15, and the upper surface of tooth block 34 and the lower part of guide rod 2 are nibbled It closes.In cavity 312, another part protrudes from except the second part 311 of slide unit 31 33 a part of button.

In presently preferred embodiments of the present invention, 33 surface of button is provided with the first striped 330, is phase between the first striped 330 Mutually parallel groove, in other embodiments or interlaced groove, for increasing the finger and button of operator Friction between 33 prevents from skidding when the finger contact button of operator and influencing to use.Two sides of guide rod 2 are provided with Recess 24, recess 24 extends to entire guide rod 2, in this way, the side incomplete contact between of the connecting rod 39 of 2 two sides of guide rod and guide rod 2, just In tooth block 34 along the quick sliding of guide rod 2.

The outside of the second part 311 of slide unit 31 has the first recess portion 313, first recess portion 313 and 312 phase of cavity Cover board 36, for setting cover board 36, is fixedly connected by mutually perforation by screw 38 with slide unit 31.Preferably, screw 38 is Flat head screw, i.e. its end are flat.There are gaps between the end and tooth block 34 of screw 38.It is set between cover board 36 and tooth block 34 It is equipped with second spring 37, the both ends of second spring 37 are contacted with tooth block 34 and cover board 36 (referring to Fig. 5) respectively.Second spring 37 is right Tooth block 34 applies pressure, engages tooth block 34 and the lower part of guide rod 2.Preferably, second spring 37 is pressure spring.

In addition, the outside of the second part 311 of slide unit 31 also has the thumb for pushing slide unit 31 convenient for operator Refer to butting section 35, the surface of the thumb butting section 35 has the second striped 350, recessed to be parallel to each other between the second striped 350 Slot, for increasing the friction between the finger of operator and thumb butting section 35.

Fig. 6~Fig. 9 gives the schematic diagram quickly adjusted using spanner 100.When the initial position of the second claw 32 (referring to Fig. 6) when for close to grip part 200, the finger of operator can contact thumb butting section 35, and right in the direction of arrow B Slide unit 31 applies a thrust, and since the position that tooth block 34 is engaged with guide rod 2 has unidirectional tooth 15, unidirectional tooth 15 has unidirectional Guiding role, tooth block 34 can towards the direction of the arrow B i.e. direction of the first claw 1 along the flank of tooth quick sliding of unidirectional tooth 15, During sliding, tooth block 34 compresses downwards second spring 37, and second spring 37 holds tooth block 34 upwards in turn makes tooth block 34 Always it contacts without and separates with guide rod 2.The quick sliding of tooth block 34 towards the first claw 1 has driven slide unit 31 thus to drive Second claw 32 is fast moved to the first claw 1, to realize the function of quickly reducing jaw amount.If along the negative side of arrow B To that is, the direction close to grip part 200 pushes slide unit 31, since the unidirectional guiding role tooth block 34 of unidirectional tooth 15 is along unidirectional The sliding of the flank of tooth of tooth 15 is hindered, therefore tooth block 34 is locked up.(referring to Fig. 7).

When the initial position of the second claw is close to grip part 200, as shown in fig. 6, the finger of operator can also be by Lower button 33 applies pressure to button 33, at this moment button 33 is by the downward knob block 34 of connecting rod 39, while the compression of tooth block 34 the Two springs 37 are detached from tooth block 34 and guide rod 2, then push slide unit 31 to the direction of arrow B, make tooth block 34 along guide rod 2 Close to 1 quick sliding of the first claw, so that slide unit 31 and the second claw 32 is driven to fast move towards the first claw 1, Realize the function of quickly reducing jaw amount.When pressure of the revocation to button 33 acts on, since the elastic force of second spring 37 acts on, tooth It slides and resets on block 34, so that tooth block 34 is engaged with guide rod 2, the second claw 32 moves stopping along guide rod 2 at this time.

When the initial position of the second claw 32 is close to the first claw 1 (referring to Fig. 8), the finger of operator can be pressed Button 33 applies pressure to button 33, at this moment button 33 is by the downward knob block 34 of connecting rod 39, while tooth block 34 compresses second Spring 37 is detached from tooth block 34 and guide rod 2, then pushes slide unit 31 to the direction of arrow D, keeps tooth block 34 remote along guide rod 2 From the first claw 1 to 200 quick sliding of grip part, to drive slide unit 31 and the second claw 32 far from the first claw 1 fast moves, and realizes the function of quickly increasing jaw amount.When pressure of the revocation to button 33 acts on, due to second spring 37 Elastic force acts on, and slides and resets on tooth block 34, so that tooth block 34 is engaged with guide rod 2, the second claw 32 stops along the movement of guide rod 2 at this time Only (referring to Fig. 9).Figure 10 gives schematic diagram of the spanner of present pre-ferred embodiments in clamping workpiece 300.Figure 11 is figure 10 partial enlarged view, Figure 11 show that the inclined-plane 314 of slide unit 31 and the angle of 2 length direction of guide rod are the first angle α, The angle of the flank of tooth 152 of inclined-plane 314 and unidirectional tooth 15 is the second angle β, and the flank of tooth 152 is to hinder tooth block 34 along the cunning of unidirectional tooth 15 That dynamic face.The angle of inclined-plane 314 and connecting rod 39 is third angle γ.It is close to inclined-plane 314 in the side 340 of tooth block 34.

As shown in figure 11, when the spanner clamping workpiece 300 of the present embodiment, i.e., when spanner is in stress, slide unit 31 will apply a power upward perpendicular to inclined-plane 314 to tooth block 34 by inclined-plane 314, which is decomposed into one perpendicular to guide rod 2 upwards the component of (i.e. direction guide rods 2) and one along guide rod 2 (direction for deviating from the first claw 1) to the right component, wherein hanging down Tooth block 34 directly is engaged with guide rod 2 in the upward component of guide rod 2, and along the component of guide rod 2 to the right there is tooth block 34 along guide rod 2 The trend slided to the right, but due to the inhibition of the flank of tooth 152 by unidirectional tooth 15, sliding quilt of the tooth block 34 along guide rod to the right It prevents, therefore tooth block 34 is locked on guide rod 2.In order to engage tooth block 34 preferably with guide rod 2, angle α should be according to inclined-plane Friction coefficient between 314 and tooth block 34 determines, to guarantee that tooth block 34 is maintained at lock because frictional force is self-locking in stress Positioning is set.Angle α is less than 90 ° and the smaller the better, this is because α is smaller, upward point perpendicular to guide rod 2 that tooth block 34 is subject to Power is bigger, thus the pressure that unidirectional tooth 15 is subject to is bigger, and tooth block 34 engages better with guide rod 2.

On the other hand, in order to make between tooth block 34 and inclined-plane 314 to realize reliable locking using frictional force is self-locking, The frictional force between tooth block 34 and inclined-plane 314 can be overcome self-locking when by lower button 33 again, realize tooth block 34 and guide rod 2 It is rapidly separated.Angle between connecting rod 39 and guide rod 2 is the 4th angle, which is set to less than 90 ° and connecting rod 39 and tiltedly The angle γ in face 314 is less than 90 °, and in this way when pressing down on button 33, button 33 applies one to tooth block 34 by connecting rod 39 Downward power, the power can be decomposed into one and be parallel to the downward component in inclined-plane 314 perpendicular to the component on inclined-plane 314 and one. The angle γ is smaller, and it is bigger that tooth block 34 was subject to be parallel to the downward component in inclined-plane 314, and gets over perpendicular to the component on inclined-plane 314 Small, the frictional force upward along inclined-plane 314 that tooth block 34 is subject to is with regard to smaller, and tooth block 34 is more easily against frictional force under inclined-plane 314 It is sliding to be unlocked to realize tooth block 34 and the disengaging of guide rod 2.

In order to guarantee that the spanner of the present embodiment unidirectional tooth 15 under stress remains to lock tooth block 34 when deformation occurs Without departing from guide rod 2, the angle β of inclined-plane 314 and the flank of tooth 152 of unidirectional tooth 15 is set greater than 0 °, the angle β is bigger, tooth block 34 Locking is more reliable, but also results in the lock for needing to rotate an angle to overcome tooth block and the guide rod described in the bring of the angle β simultaneously It is fixed, the tooth on the tooth and guide rod 2 on tooth block 34 can just separated, it is therefore desirable in cavity 312 between slide unit 31 it is pre- Certain space 316 is stayed, tooth block 34 is enable to rotate in cavity 312, so that the tooth of the two be made to separate.The reserved sky simultaneously Between 316 also can guarantee that multiple teeth on tooth block 34 can look for position automatically and reliably contact with guide rod 2, to enhance the strong of between cog Degree.

In the preferred embodiment, α=45 °, β=15 °, γ=40 °.

The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Technical solution, all should be within the scope of protection determined by the claims.

Claims (22)

1. a kind of spanner, comprising: guide rod, the first claw being mounted on the guide rod, the sliding part being set on the guide rod Part, and it is mounted on the second claw on the slide unit and with first claw cooperation, which is characterized in that the spanner It further include the tooth block for being arranged on the slide unit and cooperating with the guide rod, the tooth block has first position and second It sets；The first position refers to the location of described tooth block when the tooth block is engaged with the guide rod；The second position is Refer to the location of described tooth block when the tooth block and the guide rod are detached from；

The spanner is configured to: when the tooth block is in the first position, the tooth block is locked up；At the tooth block When the second position, the tooth block is unlocked；

The slide unit has the inclined-plane cooperated with the tooth block, has the first angle between the inclined-plane and the guide rod, When the spanner clamping workpiece, first angle enables the tooth block to be led by perpendicular to described in the guide rod and direction The active force of bar.

2. spanner as described in claim 1, which is characterized in that when the tooth block is in the first position, the tooth block It can slide along the guide rod towards first claw, and be locked up in the direction away from first claw；When the tooth block When in the second position, the tooth block can be slided along the guide rod toward and away from first claw.

3. spanner as described in claim 1, which is characterized in that the site of engagement of the guide rod and the tooth block has unidirectional Tooth, the unidirectional tooth have unidirectional guiding role: when pushing the slide unit towards first claw, the tooth block energy Enough flank of tooth along the unidirectional tooth slide, so that the slide unit is moved along the guide rod close to first claw, work as back When pushing the slide unit from first claw, the tooth block is prevented from along the sliding of the flank of tooth of the unidirectional tooth, thus The slide unit is locked up along the movement of the guide rod.

4. spanner as described in claim 1, which is characterized in that first angle is set smaller than 90 °.

5. spanner as described in claim 1, which is characterized in that the site of engagement of the guide rod and the tooth block has unidirectional Tooth, the unidirectional tooth have the flank of tooth for hindering the tooth block to slide along the direction away from first claw, the flank of tooth and institute Stating has the second angle between inclined-plane, second angle makes the unidirectional tooth still be able to lock the tooth block when deformation occurs Firmly.

6. spanner as claimed in claim 5, which is characterized in that second angle is set greater than 0 °.

7. spanner as claimed in claim 6, which is characterized in that be provided with pre- leave a blank between the tooth block and the slide unit Between, the reserved space enables the tooth block to rotate an angle, and the angle can be such that the tooth block overcomes because of described second The locking of the tooth block and the guide rod that angle generates, so that the tooth block and the guide rod be made to be detached from；It is described simultaneously reserved Space can make multiple teeth on the tooth block that position be looked for engage with the guide rod automatically.

8. spanner as described in claim 1, which is characterized in that the spanner further includes connecting rod, the connecting rod and the tooth block Connection.

9. spanner as claimed in claim 8, which is characterized in that the spanner further includes button, the button and the tooth block It is connected by the connecting rod, when applying pressure to the button, the pressure can be passed to the tooth block by the connecting rod, It is detached from the tooth block and the guide rod；When revocation is to the pressure of the button, the tooth block can reset with it is described Guide rod engagement.

10. spanner as claimed in claim 9, which is characterized in that there is third angle, together between the connecting rod and the inclined-plane There is the 4th angle between Shi Suoshu connecting rod and the guide rod, the third angle and the 4th angle make the button by The pressure can overcome the frictional force between the tooth block and the inclined-plane, to keep the tooth block and the guide rod de- From.

11. spanner as claimed in claim 10, which is characterized in that the third angle and the 4th angle are disposed as small In 90 °.

12. spanner as described in claim 1, which is characterized in that the spanner further includes button and connecting rod, the button, institute It states connecting rod and the tooth block forms a connection piece, the connector is set on the guide rod.

13. spanner as claimed in claim 12, which is characterized in that the slide unit has along the guide rod to described first The first part that claw extends, second claw is in the first part.

14. spanner as claimed in claim 12, which is characterized in that the slide unit, which also has, to be set on the guide rod Second part, the second part, which has, is arranged cavity therein, and the connector is arranged in the cavity.

15. spanner as claimed in claim 14, which is characterized in that a part of the button is in the cavity, separately A part protrudes from except the slide unit.

16. spanner as claimed in claim 14, which is characterized in that second claw has hangers, and the hangers is embedded in institute It states in second part, and is fixedly connected by pin rod with the second part.

17. spanner as claimed in claim 16, which is characterized in that the spanner further includes being arranged in first claw and institute State the clamping surface on the second claw.

18. spanner as described in claim 1, which is characterized in that first claw is connect by fixed tip with the guide rod, Card slot is provided on the fixed tip, the card slot is for installing snap ring.

19. spanner as described in claim 1, which is characterized in that the spanner further includes second spring, the second spring energy It is enough that pressure is applied to the tooth block.

20. spanner as claimed in claim 19, which is characterized in that one end of the second spring is contacted with the tooth block, separately One end is contacted with cover board, and the cover board is fixedly connected with the slide unit.

21. spanner as claimed in claim 20, which is characterized in that have the first recess portion, the lid on the outside of the slide unit Plate is embedded in first recess portion, and the cover board is fixedly connected by screw with the slide unit.

22. spanner as described in claim 1, which is characterized in that be additionally provided on the slide unit convenient for operator's promotion The thumb butting section of the slide unit.