CN116141242A - Open-ended straight pull wrench - Google Patents

Abstract

The invention discloses a novel straight-pull type 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 type multifunctional wrench, the lower part of the left movable clamp is arranged in a sliding groove, the left movable clamp can move along the direction 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) can be instantly clamped by the sliding left movable clamp, the part to be twisted is clamped by a clamping piece I and a clamping piece II, the operation of continuously twisting the part to be twisted can be realized under the condition that each part is tightly matched, and the mechanical structure is stable and firm.

Description

Open-ended straight pull wrench

Technical Field

The invention 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 a certain function, such as solid wrenches, and only can be used for screwing components to be screwed (such as nuts) with fixed sizes, for example, adjustable wrenches can be used for screwing components to be screwed with different sizes, but the adjustable wrenches cannot be used for continuously and rapidly screwing the components to be screwed on the premise of not separating from the components to be screwed, and general ratchet wrenches can be used for continuously screwing the components to be screwed, but only can be used for screwing the components to be screwed with fixed sizes. When the parts to be screwed with different sizes are required to be screwed, the ratchet wrench is generally inconvenient to replace the head.

The wrench in the current market has almost no wrench which can change the size of an opening to be suitable for different sizes of parts to be twisted and can continuously and rapidly twist the parts to be twisted on the premise of not separating from the parts to be twisted, even if the wrench is provided with the wrench, the opening can be adjusted to be the same size as the parts to be twisted after long time adjustment is required, and the wrench has the advantages of poor mechanical structure and small torsion and can not reach industrial grade, and the invention is also named as I: novel multifunctional wrench, patent number: 202121001594X.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a novel open-ended straight pull type wrench, which is simple and convenient to operate, can change the opening size instantaneously, can screw a part to be screwed quickly and continuously without separating from the part, and has a firm mechanical structure.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the invention 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, a second adjusting screw, a first spring, a second spring, a third spring, a sliding rod and the like. The left movable clamp can freely slide in a sliding groove arranged at the upper end of the right movable clamp, a containing cavity for containing a part to be screwed is formed between the left movable clamp and the right movable clamp, the lower part of the left movable clamp is arranged in the 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 is fixed with a first spring, the other end of the first spring is fixed on the right movable clamp, when the left movable clamp and the right movable clamp the minimum outer diameter of the part to be screwed, the first state is the first state, when the left movable clamp and the right movable clamp the maximum outer diameter of the part to be screwed, the second state is the second state, the left movable clamp can be switched between the first state and the second state,

when the part to be screwed is not screwed, the left movable clamp is pulled to the right movable clamp by the first spring until the left movable clamp and the right movable clamp are completely attached together, namely, the left movable clamp is in an initialization state, the containing cavity is relatively smaller when the left movable clamp is pulled by the first spring, when the part to be screwed is clamped by the left movable clamp and the right movable clamp, the containing cavity and the part to be screwed are in a clamping state, and the size of the containing cavity is the minimum outer diameter of the part to be screwed, namely, the first state. The left movable clamp moves from the sliding groove to the direction far away from the right movable clamp under the action of the part to be twisted, the accommodating cavity is relatively enlarged, and when the accommodating cavity reaches the maximum outer diameter of the part to be twisted, the accommodating cavity is in a critical state from the opening to the opening, namely, the second state.

The sliding rod is arranged in the sliding rod slideway 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 in the sliding rod slideway corresponding to the handle body, namely, the sliding rod is clamped into the bayonet of the right movable clamp, the sliding rod cannot slide freely due to the elastic action of the elastic gasket, and the right movable clamp and the handle body can be locked together.

Further, when the starting state of the novel open-ended straight-pull wrench is an initialized state, namely, the left movable clamp and the right movable clamp are attached together and no operation is performed on the open-ended straight-pull wrench, when the novel open-ended straight-pull wrench is used, the sliding rod is pushed to the center of the handle body to enable the right movable clamp and the handle body to be unlocked, the left movable clamp and the right movable clamp integrally rotate around the main shaft by a certain angle, the saw tooth opening of the left movable clamp is separated from the clamping tooth of the clamping piece I (or the clamping piece II), then the left movable clamp is rapidly moved in a direction deviating from the right movable clamp, when the size of the accommodating cavity is larger than the minimum outer diameter of a part to be twisted, the minimum outer diameter of the part to be twisted is directly clamped, and then the first adjusting screw (or the third adjusting screw) is slightly adjusted, so that the clamping tooth and the saw tooth opening are completely meshed together, and the novel open-ended straight-pull wrench is in the first state. When the part to be screwed is required to be unscrewed or screwed, after the spanner rotates by a certain angle with the center of the part to be screwed as the center of a circle according to the screwing requirement, when the spanner starts to rotate back, if the part to be screwed is in a relatively tight state, the handle body rotates around the main shaft during back screwing, so that the saw tooth opening and the clamping teeth are slowly separated until the saw tooth opening and the clamping teeth are completely separated, at the moment, the edge corner angle 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 opening straight pull spanner can not drive the part to be screwed to rotate together when rotating, when the spanner rotates back by a certain angle, other acting forces except the elastic acting force of the first spring can disappear, at the moment, the left movable clamp is pulled back to the first state by the first spring, the accommodating cavity of the opening straight pull spanner clamps the minimum outer diameter of the part to be screwed again, at the moment, the part to be screwed is screwed continuously, the operation is repeated, and the part to be screwed continuously and repeatedly in one direction. When the part to be twisted is in a looser state, the edge corner of the part to be twisted can not provide enough acting force to push the left movable clamp to slide along the sliding groove, at the moment, the mode of twisting the part to be twisted by the common spanner is adopted to operate to enable the sliding rod to slide towards the outer side of the handle body, namely, the right movable clamp and the hand plate body are locked together, and then the first adjusting screw is rotated to conduct fine adjustment, so that the saw tooth opening and the bayonet are completely meshed together, and the left movable clamp is also locked together, so that the open-ended straight pull spanner is changed into the common spanner.

Further, the handle body can be provided with a bending structure for adapting to a special narrow space.

Further, the whole open straight pull spanner can be further arranged to be a torque spanner capable of displaying the torque in real time through a pressure sensor, a power supply, a processing center, an adjusting key and a display.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the left movable clamp, the right movable clamp and the handle body can be separated or locked as required, so that conditions are 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 the fine adjustment of the left-right movement of the first adjusting screw (or the third adjusting screw), the second adjusting screw and the clamping piece I (or the clamping piece II). The left movable clamp can be driven to slide along the sliding groove under the action of the part to be screwed, so that the left movable clamp can be changed between a first state and a second state, when the part to be screwed is relatively tight, after the spanner is screwed back by a certain angle, the left movable clamp returns to the first state under the action of the elastic force of the first spring, the size of the accommodating cavity is changed, the part to be screwed is clamped again, and the part to be screwed is continuously screwed on the premise that the part to be screwed is not separated. Under some special conditions, the left movable clamp is not allowed to slide freely in the sliding groove, and the open-ended straight-pull type wrench can be adjusted to be an ordinary wrench, namely, the right movable clamp and the handle body are locked together by the sliding rod, so that the multifunctional open-ended straight-pull type wrench and the function of the ordinary wrench are switched freely. The novel open-ended straight pull type wrench can be set into a torque wrench capable of displaying the torque, and has stable mechanical structure and can reach industrial level.

Drawings

The invention will be described in further detail with reference to the drawings and the specific embodiments.

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

FIG. 2 is a perspective view of the split-open-ended straight pull wrench of example 1;

FIG. 3 is a rear perspective view of the open ended straight pull wrench of example 1;

FIG. 4 is a schematic view of the handle of example 1;

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

FIG. 6 is a perspective view of the split open-ended straight pull wrench of example 2;

FIG. 7 is a rear perspective view of the open ended straight pull wrench of example 2;

FIG. 8 is a schematic view of the handle in example 2;

FIG. 9 is a partially enlarged view of the handle body of the open ended straight pull wrench of example 3;

FIG. 10 is a section A-A of FIG. 9;

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

FIG. 12 is a section B-B of FIG. 11;

FIG. 13 is a top view showing a structure in which a rotary lever is provided in a handle body in embodiment 5;

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

fig. 15 is a schematic diagram of a wrench capable of displaying torque force in example 6.

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

Detailed Description

Example 1

As shown in fig. 1 to 4, in a state that the open-ended straight pull wrench is not operated, that is, the left movable jaw 1 and the right movable jaw 2 are attached together and the right movable jaw 2 and the handle body 3 are locked together to be in an initialized state, when a part to be screwed needs to be screwed (generally screwed clockwise), firstly the sliding rod 14 is slid to one end of the center of the handle body 3, because of the action of the elastic washer 13, when the sliding rod 14 is released, the open-ended straight pull wrench is fixed in place, at the moment, the open-ended straight pull wrench is in an unlocked state, the right movable jaw 1 and the right movable jaw 2 are rotated clockwise around the main shaft 22 by a certain angle as a whole as shown in fig. 1, and when the right movable jaw 2 and the handle body 3 form a certain angle gap, the clamping tooth 8 of the clamping piece one 7 and the saw tooth opening 4 on the left movable jaw 1 are completely disengaged, then the left movable clamp 1 is quickly slid along the direction of the sliding groove 1-1 deviating from the right movable clamp 2, so that the accommodating cavity 1-2 is quickly enlarged, the limiting piece 21 can enter the limiting groove 24, so that the left movable clamp 1 cannot be completely separated from the sliding groove 1-1, when the size of the accommodating cavity 1-2 is larger than the minimum outer diameter of a part to be screwed, the accommodating cavity 1-2 is directly sleeved on the part to be screwed, then the left movable clamp 1 is released, and the left movable clamp 1 and the right movable clamp 2 are tightly attached to the two parallel sides of the part to be screwed under the tensile force of the first spring 5 because one end of the first spring 5 is fixed on the left movable clamp 1 and the other end of the first spring 9 is fixed with the right movable clamp 2 together, at this time, the part to be screwed is tightly clamped by the tensile force of the first spring 5, as shown in fig. 4, one end of the third spring 12 is in the third spring slideway 12-2, and one end is in the first spring groove 25 of the right movable clamp 2, so that under the action of the elastic force of the third spring 12, the left movable clamp 1 and the right movable clamp 2 can automatically rotate anticlockwise around the main shaft 22 until the notch formed by the right movable clamp 2 and the handle body 3 just disappears, and the state is the first state. There are two possible states, one is that the accommodating cavity 1-2 just clamps the minimum outer diameter of the part to be screwed, the other is that the accommodating cavity 1-2 is slightly larger than the minimum outer diameter of the part to be screwed (namely smaller than the distance between two adjacent saw teeth of the latch tooth 8), at this time, the first adjusting screw 16 is rotated, the first threaded rod 18 starts to rotate, the first threaded rod 18 rotates to drive the first gear 20 to rotate, the second threaded rod 19 rotates, the second threaded rod 19 is screwed into the threaded hole 11, (because the secondary shaft 23 passes through the capsule hole 10) so that the first clamping piece 7 translates left and right within a certain range inside the wrench, and finally the latch tooth 8 and the saw tooth opening 4 can be completely meshed together as required, namely the accommodating cavity 1-2 just clamps the part to be screwed. If the parts to be screwed are in a loose state (such as when the screw cap and the screw rod are just sleeved together), the sliding rod 14 is pushed to slide in the sliding rod slideway 15 to the end of the handle body 3 close to the outer side, 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 tightly locked together, the handle body 3 is also locked, the open straight pull type spanner is adjusted to be a common movable spanner, and the parts to be screwed are screwed clockwise according to the common movable spanner. If the parts to be screwed are fastened, the sliding rod 14 slides in the sliding rod slideway 15 to one end of the inner side of the center of the handle body 3, the opening straight pull type spanner is in an unlocking state, the parts to be screwed are screwed in the clockwise direction, after a certain angle of clockwise rotation, the parts to be screwed start to be screwed back, the spanner starts to return in the anticlockwise direction, and the opening straight pull type spanner is in the unlocking state, so the handle body 3 rotates around the main shaft 22 for a certain angle, the clamping teeth 8 are completely separated from the sawtooth openings 4, the bevel edge 12-1 of the handle body 3 is propped against the corresponding part of the right movable clamp, when the anticlockwise rotation spanner is continuously returned, the right movable clamp 2 and the left movable clamp 1 rotate anticlockwise around the parts to be screwed, because the parts to be screwed are fastened, the edges of the parts to be screwed are propped 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, the accommodating cavity 1-2 slowly becomes larger, when the accommodating cavity 1-2 is equal to the maximum outer diameter of the parts to be screwed, the second state is formed, the right movable clamp continuously moves back to the first outer diameter of the accommodating cavity 1-2, and the left movable clamp starts to slide towards the first outer diameter of the left movable clamp when the accommodating cavity is continuously kept close to the accommodating cavity 1-2, and the left movable clamp is kept in the first round state, and the outer diameter is reduced to the left movable clamp is gradually to the outer diameter to the direction 5, and the movable clamp is kept in the state, and the state is gradually in the state, and the state is kept in the state, when the state is kept in the state, and the state is opposite to the state, and the state is opposite to the state. The previous actions are then cycled until the part to be screwed is screwed to the desired fastening condition. If the component to be screwed is required to be unscrewed (generally anticlockwise), the front and the back of the wrench are exchanged for the lower position and then the front operation is carried out, wherein the clockwise is changed into anticlockwise, and the anticlockwise is changed into clockwise.

Example 2

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

the first adjusting screw 16 in the embodiment 1 is changed to the third adjusting screw 16-1, and the gear of the third adjusting screw 16-1 is meshed with the gear two 11-1 of 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 within a certain range inside 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

When the handle body 3 of the open-ended straight-pull wrench in the embodiments 1 and 2 is changed to a bendable structure as shown in fig. 9 and 10, and when the part to be twisted is twisted, the handle body 3 is required to be bent, the button one 29 is pressed towards the inner direction of the handle body 3 by force, so that the clamping head 28 is separated from the tooth mouth 27, then the lower half of the handle body 3 is rotated around the shaft three 30, when the handle body 3 is rotated to a required state, the button one 29 is released, the clamping head 28 returns to the initial position under the action of the elastic force of the second spring 26, so that the bent upper and lower parts of the handle body 3 can not rotate relatively any more, and the operation of twisting the part to be twisted can be performed, otherwise the operation is the same as that of the embodiments 1 and 2.

Example 4

When the handle body 3 of the open-ended straight pull wrench in the embodiments 1 and 2 is changed to a bendable structure, as shown in fig. 11 and 12, when the part to be screwed is screwed, the handle body 3 is required to be bent, the button two 31 is pressed from the accommodating cavity 1-2 toward the handle body 3 by force, the sharp end of the button two 31 is separated from the tooth mouth 27, then the lower half of the handle body 3 is bent around the shaft three 30, when the lower half is rotated to a required state, the button two 31 is loosened, the button two 31 returns to the initial position under the elastic force of the fourth spring 32, the sharp end of the button two 31 again props against the tooth mouth 27, so that the bendable upper and lower parts of the handle body 3 can not rotate relatively any more, and the part to be screwed can be screwed, otherwise the operation is the same as that of the embodiments 1 and 2.

Example 5

When the handle body 3 of the open-ended straight-pull wrench of the embodiments 1 and 2 is provided with the rotary rod 33 as shown in fig. 13, if the wrench starts to twist the part to be twisted, the part to be twisted needs to be turned into the normal wrench function by the locking state of the embodiment 1, that is, the open-ended straight-pull wrench, but in this case, the normal wrench needs to be twisted once to separate the wrench from the part to be twisted, then rotate back to a certain angle, and clamp the part to be twisted again, thus the operation is troublesome, at this time, the head of the rotary rod 33, which is close to the elastic sheet 36, is pressed, the rotary rod 33 is rotated by 90 degrees around the axis four 34, as shown in fig. 14, the head of the rotary rod 33 is turned upwards, then the head of the rotary rod 33 is pinched by hand, at this time, the wrench can be rotated continuously around the part to be twisted until the part to be twisted is fastened by the opposite direction around the axis four 34, and the head of the rotary rod 33 is clamped into the middle pit of the elastic sheet 36, because the elastic sheet 35 is fixed on the handle body 3 by the screw 35, that the rotary rod 33 is also fixed to the initial state, and then the corresponding operation to the embodiment 1 and the operation is released according to the embodiment 1.

Example 6

In embodiments 1 to 5, a wrench capable of displaying torque force is provided, a pressure sensor 37, a power supply and a central processing center 39, an adjusting button 40 and a display 41 are connected together by a wire 38 as shown in fig. 15, when the torque force is required to be displayed, a switch in the adjusting button 40 is turned on, the pressure sensor 37 transmits pressure data to the power supply and the signal processing center 39 through the wire 38, and after processing, a signal is transmitted to the display 41 to display the torque force. The other operations of screwing the parts to be screwed are the same as those of embodiments 1 and 2.

The foregoing detailed description is given by way of example only, and is not intended to limit the scope of the claims to the exact form disclosed, as defined by the claims and their equivalents; any equivalent alterations or modifications made in accordance with the spirit of the disclosure fall within the scope of the disclosure.

Claims (8)

1. The utility model provides a novel open-ended straight pull spanner, includes left movable clamp (1), right movable clamp (2), handle body (3), its characterized in that left movable clamp (1) accessible sets up in sliding tray (1-1) on right movable clamp (2) in can follow orientation or keep away from right movable clamp (2) orientation and slide, form between left movable clamp (1) and right movable clamp (2) and be used for holding chamber (1-2) of waiting to twist the part, right movable clamp (2), left movable clamp (1), first spring (5), first dead lever (9) can rotate around main shaft (22) fixed in handle body (3) as a whole together, in order to freely switch between first state and second state, first state is holding chamber (1-2) and waiting to twist the part and is in the clamp state and holding chamber size equals waiting to twist the part minimum external diameter, the second state is holding chamber size and is equal to wait to twist the part maximum external diameter, first clamp (5) are fixed together at other end (1) and right movable clamp (2) through first spring (9).

2. The open-ended straight pull wrench as claimed in claim 1, wherein the left movable clamp (1) and the first clamping piece (7) are mutually matched, the matched part of the left movable clamp (1) is a toothed saw tooth opening (4), the first clamping piece (7) is a clamping tooth (8) capable of being fully meshed with the saw tooth opening (4), the first adjusting screw (16) is matched with the first clamping piece (7), the middle rod body of the first adjusting screw (16) is a first threaded rod body (18), the threads of the first threaded rod body (18) can be fully meshed with the first gear (20) of the second adjusting screw (17), and the threads of the second threaded rod body (19) of the second adjusting screw (17) are matched with the threads of the threaded hole (11) of the first clamping piece (7).

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

4. 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).

5. The open-ended straight pull wrench of claim 4 wherein the slide bar (14) is snapped into the bayonet (6) when slid into the slide bar slide (15) to an outboard end of the handle body (3) to secure the right movable clamp (2) and the handle body (3) together, and wherein the slide bar (14) releases the right movable clamp (2) and the handle body (3) from a secure relationship when slid into the slide bar slide (15) to an end proximate the center of the handle body (3).

6. Open-ended straight-pull wrench according to claim 1, characterized in that the start state of the open-ended straight-pull wrench is an initialized state, the first state of claim 1 is a state in which the accommodating cavity (1-2) is just clamped to the smallest outer diameter of the part to be screwed, and the second state of claim 1 is a critical state in which the left movable jaw (1) slides along the sliding groove (1-1) away from the right movable jaw (2) under the action of the part to be screwed, the size of the accommodating cavity (1-2) is just equal to the largest outer diameter of the part to be screwed, and the accommodating cavity (1-2) starts to be smaller.

7. The handle body (3) further comprises a third spring slideway (12-2), and a third spring (12) is arranged in the third spring slideway.

8. The open-ended straight pull wrench of claim 1, wherein the handle body (3) further comprises a pressure sensor (37), a wire (38), a power supply and central processing center (39), an adjustment button (40), a display (41), and wherein the handle body (3) further comprises a bendable structure.

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