CN216504760U - Open straight-pull wrench - Google Patents

Abstract

The utility model discloses a novel straight-pull multifunctional wrench, which comprises a left movable clamp, a right movable clamp and a handle body, wherein the left movable clamp and the right movable clamp are positioned at the left side and the right side of the upper end of the straight-pull multifunctional wrench, the lower part of the left movable clamp is arranged in a sliding groove, the left movable clamp can move towards or away from the right movable clamp under the action of external force, the left movable clamp and the right movable clamp can integrally rotate around a main shaft in the handle body, a part to be twisted (such as a nut and the like) can be instantly clamped by sliding the left movable clamp, the part to be twisted is twisted by clamping the left movable clamp through a clamping piece I and a clamping piece II, the operation of continuously twisting the part to be twisted on the premise that the wrench does not break away from the part to be twisted can be realized under the tight fit of the parts during returning, and the mechanical structure is stable and firm.

Description

Open straight-pull wrench

Technical Field

The utility model relates to the technical field of hand tools, in particular to a novel open straight pull type wrench.

Background

At present, most of wrenches commonly used in production and life only have functions of a certain aspect, such as a solid wrench, and only can be used for screwing parts to be screwed (such as nuts and the like) with fixed sizes, such as an adjustable wrench, but the parts to be screwed can not be screwed continuously and rapidly without departing from the parts to be screwed, and although a common ratchet wrench can be used for continuously screwing the parts to be screwed, the parts to be screwed with fixed sizes can only be screwed. When parts to be screwed in different sizes need to be screwed, the head of the ratchet wrench is generally replaced, which is very inconvenient.

At present, the size of an opening of a wrench in the market can be changed to adapt to parts to be screwed in different sizes, and meanwhile, the parts to be screwed can be continuously and quickly screwed on the premise of not deviating from the parts to be screwed, even if the opening needs to be adjusted in advance for a long time, the opening can be adjusted to be as large as the parts to be screwed, the mechanical structure is generally poor, the torsion is small, and the industrial-level wrench cannot be achieved, and the wrench is also named as a utility model: a novel multifunctional wrench, patent number: 202121001594X.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a novel open straight pull type wrench which is simple and convenient to operate, can instantly change the size of an opening, can be quickly and continuously screwed on the premise of not separating a part to be screwed, and has a firm mechanical structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a novel open straight pull type wrench, which comprises a left movable clamp, a right movable clamp, a handle body, a clamping piece, a first adjusting screw rod, a second adjusting screw rod, a first spring, a second spring, a third spring, a sliding rod and the like. The left movable pliers can freely slide in a sliding groove arranged at the upper end of the right movable pliers, an accommodating cavity for accommodating a part to be screwed is formed between the left movable pliers and the right movable pliers, the lower part of the left movable pliers is arranged in the sliding groove, the left movable pliers can move towards or away from the right movable pliers under the action of external force, the left movable pliers are fixedly provided with a first spring, the other end of the first spring is fixedly arranged on the right movable pliers, the first state is realized when the left movable pliers and the right movable pliers clamp the minimum outer diameter of the part to be screwed, the second state is realized when the left movable pliers and the right movable pliers clamp the maximum outer diameter of the part to be screwed, and the left movable pliers can be switched between the first state and the second state,

when no part of waiting to twist, the left activity pincers are drawn right activity pincers by first spring and are reached the state that both are the complete laminating together and be initial state promptly, and the left side activity pincers hold the chamber and diminish relatively when being pulled by first spring, when the part of waiting to twist was carried to left activity pincers and right activity pincers and is started to twist and move and wait to twist the part, hold the chamber and wait to twist the part and be in the clamping state, hold the size in chamber and be waiting to twist the minimum external diameter of part promptly first state. The left movable clamp moves towards the direction away from the right movable clamp from the sliding groove under the action of the part to be screwed, the accommodating cavity is enlarged relatively, and when the accommodating cavity reaches the maximum outer diameter of the part to be screwed, the accommodating cavity is also in a critical state, namely a second state, in which the opening is gradually enlarged and gradually reduced from the opening.

The sliding rod is arranged in a sliding rod slide way of the handle body, when the sliding rod slides from one side close to the center of the handle body to the outer side close to the handle body from the sliding rod slide way corresponding to the handle body, namely the sliding rod is clamped into a bayonet of the right movable clamp, the sliding rod can not slide freely due to the elastic action of the elastic washer, and then the right movable clamp and the handle body can be locked together.

Further, when the starting state of the novel open straight pull type wrench is an initialization state, namely, the left movable pliers and the right movable pliers are attached together and are not operated, when the novel open straight pull type wrench is used, the sliding rod is pushed towards the center of the handle body to unlock the right movable pliers and the handle body, the left movable pliers and the right movable pliers integrally rotate for a certain angle around the main shaft, the sawtooth opening of the left movable pliers is separated from the latch of the first clamping piece (or the second clamping piece), then the left movable pliers rapidly move towards the direction deviating from the right movable pliers, when the size of the accommodating cavity is larger than the minimum outer diameter of the part to be screwed, the minimum outer diameter of the part to be screwed is directly clamped, the first adjusting screw (or the third adjusting screw) is slightly adjusted, the latch and the sawtooth opening are completely meshed together, and the first state is also realized at the moment. When the part to be screwed is required to be unscrewed or screwed, after the wrench is forcibly rotated by a certain angle according to the screwing requirement with the center of the part to be screwed as a circle center, when the wrench starts to be screwed, if the part to be screwed is in a relatively tight state, the handle body rotates around the main shaft during screwing, the sawtooth opening and the latch are slowly and completely separated, at the moment, the edge corner of the part to be screwed can push the left movable clamp to slide along the direction deviating from the right movable clamp, the accommodating groove starts to be enlarged, so that the part to be screwed can not be driven to rotate together during rotation of the open straight pull type wrench, when the wrench is screwed by a certain angle, other acting forces can disappear except the elastic acting force of the first spring, at the moment, the left movable clamp is pulled back to the first state by the first spring, so that the accommodating cavity of the open straight pull type wrench clamps the minimum outer diameter of the part to be screwed again, at the moment, the part to be screwed is continuously screwed, the above operation is repeated, and the member to be screwed can be screwed in one direction continuously and repeatedly. When treating to twist the part and be in when loose state, the spanner is twisted back the time and is treated the marginal edges and corners of twisting the part and can't provide sufficient effort and promote left activity pincers and slide along the sliding tray, adopts ordinary spanner to twist the mode operation of treating to twist the part this moment and is about to the litter to handle external side slip, right activity pincers and the spanner body locking together promptly, and the first adjusting screw of gyration is finely tuned again, makes the sawtooth mouth and bayonet socket mesh together completely, just also makes left activity pincers also locked together, makes opening straight pull formula spanner become an ordinary spanner.

Furthermore, the handle body can be arranged into a bending structure to adapt to a special narrow space.

The whole open straight pull type spanner can be further set into a torque spanner capable of displaying the torque in real time through a pressure sensor, a power supply, a processing center, an adjusting button and a display.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the left movable pliers, the right movable pliers and the handle body can be separated or locked according to requirements, so that a condition is created for instantly changing the size of the accommodating cavity, and the accommodating cavity can reach the accurate size of any part to be screwed through fine adjustment of left and right movement of the first adjusting screw rod (or the third adjusting screw rod), the second adjusting screw rod and the first clamping piece (or the second clamping piece). Can drive left activity pincers and slide along the sliding tray under the effect of waiting to twist the part for left activity pincers change between first state and second state, when waiting to twist part self when tighter, the spanner back-twists certain angle after, makes left activity pincers get back to first state under the spring action of first spring, reaches the size that changes and holds the chamber and presss from both sides tightly once more and waits to twist the part, realizes that quick not breaking away from to twist in succession under the prerequisite of waiting to twist the part and wait to twist the part. Under some special conditions, the left movable pliers are not allowed to freely slide in the sliding groove, and the open straight pull type spanner can be adjusted to be a common spanner, namely the right movable pliers and the handle body are locked together by the sliding rod, so that the multifunctional state of the open straight pull type spanner and the state of freely switching the functions of the common spanner are achieved. And this novel opening straight pull formula spanner can also set to and can show torsion size torsion spanner, and mechanics stable in structure can reach the industrial grade.

Drawings

The utility model is described in further detail below with reference to specific embodiments and with reference to the following drawings.

FIG. 1 is a front perspective view of an open-ended straight pull wrench of embodiment 1;

FIG. 2 is an exploded perspective view of an open ended straight pull wrench in accordance with embodiment 1;

FIG. 3 is a rear perspective view of an open straight pull wrench in accordance with embodiment 1;

FIG. 4 is a schematic view of a handle body in embodiment 1;

FIG. 5 is a front perspective view of an open straight pull wrench of embodiment 2;

FIG. 6 is an exploded perspective view of an open straight pull wrench in accordance with embodiment 2;

FIG. 7 is a rear perspective view of an open straight pull wrench in accordance with embodiment 2;

FIG. 8 is a schematic view of a handle body in embodiment 2;

FIG. 9 is an enlarged view of the handle body of the open-ended Czochralski wrench of embodiment 3;

FIG. 10 is a sectional view taken along line A-A of FIG. 9;

FIG. 11 is a schematic view of a bendable structure of the handle in embodiment 4;

FIG. 12 is a sectional view taken along line B-B of FIG. 11;

FIG. 13 is a top view of a structure of the handle body in accordance with embodiment 5, in which a rotating lever can be disposed;

FIG. 14 is a side view and a partially enlarged view of the handle body shown in FIG. 13;

fig. 15 is a schematic view of a wrench capable of displaying torque in embodiment 6.

Wherein: a left movable clamp 1, a sliding groove 1-1, a containing cavity 1-2, a notch 1-3, a right movable clamp 2, a handle body 3, a saw-tooth mouth 4, a first spring 5, a bayonet 6, a first clamping piece 7, a second clamping piece 7-1, a clamping tooth 8, a first fixed rod 9, a capsule hole 10, a threaded hole 11, a gear two 11-1, a third spring 12, a bevel edge 12-1, a third spring slideway 12-2, an elastic washer 13, a slide rod 14, a slide rod slideway 15, a first adjusting screw 16, a second adjusting screw 17, a third adjusting screw 16-1, a threaded rod one 18, a threaded rod two 19, a gear one 20, a limiting piece 21, a main shaft 22, a secondary shaft 23, a limiting groove 24, a spring groove one 25, a spring groove two 25-1, a second spring 26, a tooth mouth 27, a sliding button 28, a button one 29, a shaft three 30, a button two 31, a fourth spring 32, a rotating rod 33, a shaft four 34, a screw 35, a spring plate 36, a pressure sensor 37, a lead 38, a power supply and central processing center 39, an adjusting button 40 and a display 41.

Detailed Description

Example 1

Referring to fig. 1 to 4, in a state that the open straight pull wrench is not operated, that is, the left movable wrench 1 and the right movable wrench 2 are attached together and the right movable wrench 2 and the handle body 3 are locked together in an initial state, when a component to be screwed needs to be screwed (generally, the component is screwed clockwise), the sliding rod 14 is firstly slid to one end of the center of the handle body 3, because of the function of the elastic washer 13, when the sliding rod 14 is released, the component is fixed in place and is not moved, at this time, the open straight pull wrench is in an unlocked state, the wrench is turned right side up as shown in fig. 1, the left movable wrench 1 and the right movable wrench 2 as a whole start to rotate clockwise around the main shaft 22 for a certain angle, when the right movable wrench 2 and the handle body 3 form a certain angle gap, the latch 8 of the fastener piece 7 is completely disengaged from the serrated mouth 4 on the left movable wrench 1, and then the left movable wrench 1 is rapidly slid along the direction that the sliding groove 1-1 deviates from the right movable wrench 2, the containing cavity 1-2 is rapidly enlarged, because the limiting piece 21 can enter the limiting groove 24, the left movable clamp 1 can not be completely separated from the sliding groove 1-1, when the size of the containing cavity 1-2 is larger than the minimum outer diameter of the part to be screwed, the containing cavity 1-2 is directly sleeved on the part to be screwed, then the left movable clamp 1 is released, because one end of the first spring 5 is fixed on the left movable clamp 1, the other end of the first spring is fixed with the right movable clamp 2 by the first fixing rod 9, the left movable clamp 1 and the right movable clamp 2 tightly clamp the part to be screwed under the tension of the first spring 5, two parallel side surfaces of the part to be screwed are tightly attached with two parallel side surfaces of the containing cavity 1-2, as shown in figure 4, one end of the third spring 12 is arranged in the third spring slideway 12-2, and one end of the spring groove one 25 of the right movable clamp 2, therefore, under the action of the elastic force of the third spring 12, the left movable plier 1 and the right movable plier 2 automatically rotate counterclockwise around the main shaft 22 until a gap with a certain angle formed by the right movable plier 2 and the handle body 3 disappears, which is the first state. When the minimum outer diameter of the component to be screwed is just clamped by the accommodating cavity 1-2, and the minimum outer diameter of the component to be screwed is just clamped by the accommodating cavity 1-2, the first adjusting screw 16 is rotated to cause the first threaded rod 18 to rotate, the first threaded rod 18 rotates to drive the first gear 20 to rotate, the second threaded rod 19 rotates, and the second threaded rod 19 is screwed into the threaded hole 11 (because the secondary shaft 23 penetrates through the capsule hole 10), so that the first clamping piece 7 translates left and right within a certain range in the wrench, and finally the clamping tooth 8 and the sawtooth opening 4 are completely meshed together as required, namely the accommodating cavity 1-2 just clamps the component to be screwed. If the part to be screwed is in a loose state (for example, the nut and the screw rod are just sleeved together), the sliding rod 14 needs to be pushed to slide to one end, close to the outer side, of the handle body 3 in the sliding rod slideway 15, the rod body of the sliding rod 14 enters the bayonet 6 of the right movable clamp 2, the left movable clamp 1 and the right movable clamp 2 are locked together tightly, the open straight pull type spanner is adjusted to be a common movable spanner, and the part to be screwed is screwed clockwise according to the common movable spanner. If the part to be screwed is fastened, the sliding rod 14 slides to one end of the inner side of the center of the handle body 3 in the sliding rod slide way 15, the open straight pull type spanner is in an unlocking state, the part to be screwed is screwed in the direction, the part to be screwed starts to be screwed back after rotating clockwise for a certain angle, the spanner starts to return after rotating anticlockwise, and the open straight pull type spanner is in the unlocking state, so that the handle body 3 rotates around the main shaft 22 for a certain angle firstly, the latch 8 is completely separated from the sawtooth opening 4, the inclined edge 12-1 of the handle body 3 props against the corresponding part of the right movable clamp, and when the spanner continues to return anticlockwise, the right movable clamp 2 and the left movable clamp 1 rotate anticlockwise around the part to be screwed together, because the part to be screwed is fastened, the edge of the part to be screwed props against the two sides of the accommodating cavity 1-2, the left movable clamp 1 moves along the direction of the sliding groove 1-1 deviating from the right movable clamp 2, the accommodating cavity 1-2 is gradually enlarged, when the accommodating cavity 1-2 is equal to the maximum outer diameter of the part to be screwed, the state is the second state, when the accommodating cavity 1-2 continuously returns, the outer diameter of the part to be screwed relative to the accommodating cavity 1-2 begins to become smaller, at the moment, the left movable clamp 1 begins to slide towards the direction close to the right movable clamp 2 under the action of the tensile force of the first spring 5, and finally returns to the first state, so that a cycle is formed. And then the previous action is repeated until the parts to be screwed are screwed to the required fastening state. If the component to be screwed needs to be unscrewed (generally in the counterclockwise direction), the front face and the back face of the wrench are exchanged to be in the lower positions, and then the front operation is carried out, wherein the clockwise operation is changed into the counterclockwise operation, and the counterclockwise operation is changed into the clockwise operation.

Example 2

As shown in fig. 5 to 8, the operation is basically the same as in embodiment 1, except that:

the first adjusting screw 16 in the embodiment 1 is changed into a third adjusting screw 16-1, and a gear of the third adjusting screw 16-1 is meshed with a gear 11-1 in the second clamping piece 7-1, so that the third adjusting screw 16-1 is rotated to drive the second clamping piece 7-1 to translate left and right in a certain range in the wrench.

One end of the third spring 12 is arranged in the third spring slideway 12-2, and the other end is arranged in the second spring groove 25-1 of the right movable clamp 2.

Example 3

The handle body 3 of the open-ended straight pull wrench in the embodiments 1 and 2 is changed into a bendable structure as shown in fig. 9 and 10, when a to-be-screwed part is screwed, and a barrier exists at the sweeping position of the handle body 3, the handle body needs to be bent, the first button 29 is pressed towards the inner direction of the handle body 3 with force to make the clamp head 28 separate from the tooth opening 27, then the bent lower half part of the handle body 3 rotates around the third shaft 30, when the handle body is rotated to a required state, the first button 29 is released, the clamp head 28 returns to the initial position under the action of the elastic force of the second spring 26, the bent upper and lower parts of the handle body 3 can not rotate relatively, the to-be-screwed part can be screwed, and other operations are the same as the operations of the embodiments 1 and 2.

Example 4

The handle body 3 of the open-ended straight pull wrench in the embodiments 1 and 2 is changed into a bendable structure, as shown in fig. 11 and 12, when the part to be screwed is screwed, and an obstacle is present at the sweeping position of the handle body 3, at this time, the handle body needs to be bent, the button two 31 is pressed from the accommodating cavity 1-2 to the direction of the handle body 3 with force, so that the sharp end of the button two 31 is separated from the tooth opening 27, then the bent lower half part of the handle body 3 rotates around the shaft three 30, when the handle body is rotated to a required state, the button two 31 is loosened, the button two 31 returns to the initial position under the action of the elastic force of the fourth spring 32, the sharp end of the button two 31 abuts against the tooth opening 27, so that the bendable upper and lower parts of the handle body 3 can not rotate relatively, the part to be screwed can be screwed, and other operations are the same as the operations of the embodiments 1 and 2.

Example 5

The rotating rod 33 is arranged in the handle body 3 of the open straight pull type spanner in the embodiments 1 and 2 as shown in fig. 13, when the spanner starts to screw the to-be-screwed component, if the to-be-screwed component is loose, the locked state of the open straight pull type spanner in the embodiment 1 is changed into the function of a common spanner, but in the case of the common spanner, the spanner is separated from the to-be-screwed component once the spanner is screwed, then the spanner is rotated and returned to a certain angle, the to-be-screwed component is clamped again to continue to screw, the operation is troublesome, at the moment, the head part of the rotating rod 33 close to the elastic sheet 36 is pressed, the rotating rod 33 rotates 90 degrees around the shaft IV 34 as shown in fig. 14, the head part of the rotating rod 33 is upward, then the head part of the rotating rod 33 is pinched by hand, at the moment, the spanner can be rotated continuously around the to-be-screwed component as a whole until the to-be-screwed component is fastened, then the rotating rod 33 rotates 90 degrees around the shaft IV 34 reversely, the head of the rotating rod 33 is engaged with the middle concave of the elastic sheet 36, and the elastic sheet 35 is fixed on the handle body 3 by the screw 35, so that the rotating rod 33 is also fixed, that is, the rotating rod 33 returns to the initial state, the locking state is released according to the method in the embodiment 1 and 2, and the corresponding operation in the embodiment 1 and 2 is performed as required.

Example 6

Embodiments 1 to 5 can all realize the wrench displaying the torque force, connect the pressure sensor 37, the power supply and central processing center 39, the adjusting button 40, and the display 41 together by the wire 38 as shown in fig. 15, when the torque force needs to be displayed, open the switch in the adjusting button 40, the pressure sensor 37 transmits the pressure data to the power supply and signal processing center 39 through the wire 38, and after processing, the signal is transmitted to the display 41 to display the magnitude of the torque force. Other operations for screwing the member to be screwed are the same as in embodiments 1 and 2.

The foregoing detailed description is given by way of example only, to better enable one of ordinary skill in the art to understand the patent, and is not to be construed as limiting the scope of what is encompassed by the patent; any equivalent alterations or modifications made according to the spirit of the disclosure of this patent are intended to be included in the scope of this patent.

Claims (7)

1. A novel open straight pull type wrench comprises a left movable clamp (1), a right movable clamp (2) and a handle body (3), and is characterized in that the left movable clamp (1) can slide towards or away from the right movable clamp (2) through a sliding groove (1-1) arranged on the right movable clamp (2), a containing cavity (1-2) used for containing a part to be screwed is formed between the left movable clamp (1) and the right movable clamp (2), the left movable clamp (1), a first spring (5) and a first fixing rod (9) can rotate around a main shaft (22) fixed on the handle body (3) as a whole, and are freely switched between a first state and a second state, the first state is that the containing cavity (1-2) and the part to be screwed are in a clamping state, and the size of the containing cavity is equal to the minimum outer diameter of the part to be screwed, the second state is that the accommodating cavity (1-2) and the part to be screwed are in a clamping state and the accommodating cavity is equal to the maximum outer diameter of the part to be screwed, one end of the first spring (5) is fixed with the right movable clamp (2) through the first fixing rod (9), the other end of the first spring is fixed on the left movable clamp (1), the left movable clamp (1) and the first clamping piece (7) are matched with each other, the matching part of the left movable clamp (1) is a toothed sawtooth opening (4), the matching part of the first clamping piece (7) is a clamping tooth (8) which can be completely meshed with the sawtooth opening (4), the matching part of the first clamping piece (7) is a first adjusting screw (16), the middle rod body of the first adjusting screw (16) is a first threaded rod (18), the thread of the first threaded rod (18) can be completely meshed with the first gear (20) of the second adjusting screw (17), and the thread of the second threaded rod (19) of the second adjusting screw (17) is matched with the thread of the threaded hole (11) of the first clamping piece (7) And (5) matching.

2. The open straight pull type wrench according to claim 1, wherein the left movable wrench (1) and the second clamping piece (7-1) are mutually matched, the matching part of the left movable wrench (1) is the toothed sawtooth opening (4), the second clamping piece (7-1) is a clamping tooth (8) which can be completely meshed with the sawtooth opening (4), the matching part of the left movable wrench and the second clamping piece (7-1) is a third adjusting screw rod (16-1), and a gear of the third adjusting screw rod (16-1) is mutually meshed with a gear second (11-1) of the second clamping piece (7-1).

3. Open-ended straight pull wrench according to claim 1, characterized in that the handle body (3) comprises a main shaft (22), a secondary shaft (23), a slide rod (14), a stop (21).

4. The open straight pull wrench according to claim 3, wherein the slide rod (14) slides in the slide rod slide way (15) to the end of the handle body (3) near the outer side and can be clamped in the bayonet (6) to fix the right movable jaw (2) and the handle body (3) together, and when the slide rod (14) slides in the slide rod slide way (15) to the end near the center of the handle body (3), the fixed relation between the right movable jaw (2) and the handle body (3) is released.

5. The open straight pull wrench according to claim 1, wherein the starting state of the open straight pull wrench is an initialization state, the first state is a minimum outer diameter state in which the accommodating cavity (1-2) just clamps the member to be screwed, and the second state is a critical state in which the left movable jaw (1) slides along the sliding groove (1-1) to a direction away from the right movable jaw (2) under the action of the member to be screwed until the size of the accommodating cavity (1-2) is just equal to the maximum outer diameter of the member to be screwed and the accommodating cavity (1-2) begins to become smaller.

6. Open ended straight pull wrench according to claim 1, characterized in that the handle body (3) further comprises a third spring slide (12-2) in which the third spring (12) is arranged.

7. Open-ended straight pull wrench according to claim 1, characterized in that the handle body (3) further comprises a pressure sensor (37), a wire (38), a power supply and central processing center (39), an adjusting button (40), a display (41), and the handle body (3) is further configured to be bendable.

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