CN106392961B - The monkey wrench adjusted easy to bore - Google Patents

Abstract

The invention discloses a kind of monkey wrench adjusted easy to bore, including the handle that can be twisted the wrench body of bolt or nut, be connected with wrench body, wrench body includes push rod, pedestal, the transmission mechanism for adjusting pushrod movement；It is provided with the vertical side of pedestal and is threadedly coupled with the one-to-one screw hole of push rod, screw hole with push rod, transmission mechanism includes being arranged on the adjuster on the outside of handle, by adjuster, transmission mechanism is driven push rod rotation, push rod is rotationally advancing under the cooperation of screw hole；The present invention drives swivel base to rotate by adjusting screw rod, so as to drive push rod to move, pass through constraint of the screw hole to push rod, so that push rod is completed to move radially, push rod is rotationally advancing along screw hole, after clamping with self-locking effect, is not easy to skid, and larger clamping force can be provided and twist support force, reduce because twist power it is excessive caused by tool damage.

Description

Adjustable wrench for caliber adjustment

technical field

The invention relates to the field of wrenches, in particular to an adjustable wrench which is convenient for caliber adjustment.

Background technique

A wrench is a commonly used installation and disassembly tool. It uses the principle of leverage to twist bolts, screws, nuts and other hand tools that are threaded to hold the opening or casing of the bolt or nut; the wrench is usually made at one or both ends of the handle. There are openings or sleeve holes for clamping bolts or nuts. When in use, an external force is applied to the shank along the direction of thread rotation to twist the bolts or nuts. Wrenches are usually divided into dead wrenches and live wrenches. Dead wrenches have openings of fixed size at one or both ends, which are used to twist nuts or bolts of a certain size; live wrenches have opening widths that can be adjusted within a certain size range. , can screw bolts or nuts of different specifications.

In our daily life or in industrial design, we need to install and disassemble bolts or nuts of different sizes and specifications. If we use dead wrenches, we need to have wrenches of different calibers, which are heavy to carry and inconvenient to use. Usually we The adjustable wrench used has a fixed jaw on one side and a movable jaw on one side. The movable jaw is moved through thread transmission to form jaws with different openings. However, when the adjustable wrench clamps the bolt or nut through the left and right sides, When turning in a certain direction, the force of the pressure is concentrated on the corners of the bolt or nut, which is easy to cause damage to the corners of the bolt or nut, such as the phenomenon of edging of the outer hexagon round head.

Since the current polygonal bolts or nuts are generally positive hexagonal, so when addressing this phenomenon, people’s design targets are basically concentrated on hexagonal bolts or hexagonal nuts. The following is an example of hexagonal bolts; such as patent application No. 201210421085.1 A kind of multi-purpose wrench, the clamp head is controlled by six adjustable claw screws, so that the V-shaped grooves on the clamp head are respectively clamped on the six corners of the regular hexagonal bolts, which not only increases the force point, but also reduces the main force. The force point is transferred from the easy-to-damage corner to the non-damage surface, avoiding the edging phenomenon of the outer hexagon round head, etc. However, this design needs to adjust the six horn screws separately during the clamping process, which is not easy to control and Time-consuming and labor-intensive.

On this basis, the patent application number 201510746558.9 of the quick wrench with adjustable caliber size, through the control of the upper and lower pressure plates, the two pressure plates with an inner angle of 120° respectively clamp the two corners of the hexagonal bolts to form a four-dimensional In this case, when the wrench starts to twist the hexagonal bolt, there are four main force points, and the positions of the main force points are on the surface that is not easily damaged; a belt test with patent application number 201510620355.5 The wrench of the electric pen is clamped through the V-shaped opening in front of the slider, and the sliding is controlled by the adjusting bolt to clamp hexagonal bolts of different sizes; Mechanism devices slide horizontally when adjusting the caliber. The clamping force and the support force when twisting in the horizontal sliding way are relatively small. In some cases, the twisting will not move. When the clamping force or twisting force is large, it is easy to slip and even damage the corresponding transmission mechanism.

Contents of the invention

In order to solve the above technical problems, the present invention provides an adjustable wrench that is convenient for caliber adjustment. Through threaded connection, the push rod rotates and advances. After clamping, it has a self-locking effect, is not easy to slip, and can provide greater clamping force and twist Rotation support force to reduce tool damage caused by excessive twisting force.

In order to achieve the above object and achieve the above effect, the present invention is realized through the following technical solutions:

An adjustable wrench convenient for caliber adjustment, comprising a wrench body capable of turning bolts or nuts, a handle connected to the wrench body, the wrench body including a push rod, a base, and a transmission mechanism for adjusting the movement of the push rod; There are screw holes corresponding to the push rod one by one on the side, and the screw hole is threadedly connected with the push rod. The transmission mechanism includes a regulator arranged outside the handle. Through the regulator, the transmission mechanism drives the push rod to rotate, and the push rod is in the screw hole. Cooperate with the rotation to move forward.

As a preferred mode of the transmission mechanism, the transmission mechanism includes a rotating chassis located in the base, the adjuster is connected with an adjusting screw through an adjusting rod, the adjusting screw is connected to the vertical side of the rotating chassis, and the horizontal side of the rotating chassis is connected to the pusher. The rod transmission is connected so that the regulator adjusts the rotation of the rotating chassis, and the rotating chassis drives the push rod to rotate.

As a preferred solution to prevent the adjuster from moving horizontally, a fixing snap ring is provided on the adjusting rod, which is fixedly connected with the adjusting rod, and the solid part in the handle is opened to accommodate and fix The hollow groove of the snap ring, the hollow groove fixes the position of the fixed snap ring, so that it can only rotate with the rotation of the adjusting rod, but does not move horizontally, so that the regulator fixedly connected with the adjusting rod does not Horizontal movement occurs.

As a preferred solution for the transmission connection between the adjusting screw and the rotating chassis, the adjusting screw includes adjusting threads, and the rotating chassis includes rotating helical teeth engaged with the adjusting threads on the vertical side, so that the adjusting screw and the vertical side of the rotating chassis form a worm gear transmission.

As a preferred solution for the transmission connection between the rotating chassis and the push rod, the rotating chassis includes rotating spur teeth on the horizontal side, and the surface of the push rod forms radial gear teeth meshing with the rotating spur teeth in the longitudinal direction, so that the level of the rotating chassis One side forms a cylindrical gear transmission with the push rod.

As a preferred solution for the threaded connection between the push rod and the screw hole, the surface of the push rod forms a radial external thread in the transverse direction, and the screw hole is provided with a radial internal thread that engages with the radial external thread, so that the push rod and the screw hole Form an axial screw drive.

As a preferred method, the rotating chassis includes a snap ring for slidingly connecting the rotating chassis with the inner side wall of the base, and a limit block for restricting the rotation of the rotating chassis. The limit block is arranged in the middle of the rotating helical teeth, and the limit block is a thin cylinder. On the side, the distance from it to the center of the circle is equal to the distance from the top of the tooth on the rotating helical gear to the center of the circle. When the adjusting screw touches the limit block, the adjusting screw stops moving, thereby stopping the rotation of the rotating chassis. The benefits of the limit block are Prevents the push rod from rotating out of the threaded hole.

In order to facilitate the installation of the push rod, there is a slot on the tail of the push rod that is twisted with the tool, such as a slot, a cross groove, a plum blossom groove, a hexagonal groove, etc.; at the same time, let the push rod point to The center of the same circle ensures contact with the area of the bolt or nut.

As a preferred manner, the adjuster is arranged at the tail of the handle, and its shape corresponds to that of the handle. When not in use, the adjuster and the handle are integrated to make the adjustable wrench more beautiful.

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

An adjustable wrench that is convenient for caliber adjustment. Through the regulator on the outside of the handle, the adjusting screw drives the rotating chassis to rotate, thereby driving the push rod to move. The screw hole on the side of the base constrains the push rod, so that the push rod completes the diameter Moving in the direction, the push rod rotates forward along the screw hole. After rotating to the target position, the thread has self-locking ability and is not easy to slip and loosen. The contact area between the push rod and the screw hole due to the thread connection makes this transmission mode It can provide a large twisting support force; at the same time, the multi-stage transmission method and the contact area formed by the threaded connection enable this transmission method to provide a large clamping force; thus it is convenient for the user to perform a large force on the bolt or nut. The screwing can reduce tool damage caused by excessive screwing force.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the contents of the description, the preferred embodiments of the present invention will be described in detail below with accompanying drawings. The specific embodiment of the invention is given in detail by the following examples and accompanying drawings.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the overall structure schematic diagram of the adjustable wrench that is convenient to caliber adjustment that the present invention relates to;

Fig. 2 is a schematic diagram of internal disassembly of an adjustable wrench that is convenient for caliber adjustment according to the present invention;

Fig. 3 is an enlarged schematic diagram of area A in Fig. 2;

Fig. 4 is the structural representation of each kinematic mechanism involved in the present invention;

FIG. 5 is a schematic diagram of the structure of FIG. 4 under different stereoscopic viewing angles.

Wherein, the above drawings include the following reference signs: wrench main body 1, handle 2, adjuster 3, rotating chassis 4, push rod 5, base 6, adjusting screw 31, adjusting rod 32, fixed snap ring 33, adjusting thread 311, rotary helical tooth 41, rotary straight tooth 42, rotary snap ring 43, limit block 44, radial gear tooth 51, radial external thread 52, slot 53, screw hole 61, radial internal thread 62, base Chassis 63, opening 64.

Detailed ways

Below with reference to accompanying drawing and in conjunction with embodiment, describe the present invention in detail:

As shown in Figure 1, an adjustable wrench that facilitates caliber adjustment, the preferred embodiment of the present invention is designed for the most common hexagonal bolts or nuts on the market, including a wrench body 1, a handle 2, an adjuster 3, six Push rod 5, base 6, wherein, regulator 3 is arranged on the afterbody of handle 2, and shape and handle 2 shape are cuboid, handle 2 is connected with base 6, and push rod 5 is connected with base 6, and this push rod The angle between 5 is 60°, which is evenly distributed on the base 6 in a ring shape.

Fig. 2 turns over the wrench in Fig. 1, then removes the base chassis 63 of the base 6, and forms a solid part in the base 6 that only retains the screw hole 61 and an empty groove part for placing the rotating chassis 4, the solid A part provides greater support strength when clamping or twisting, wherein the rotating chassis 4 includes a snap ring 43 , and the snap ring 43 enables the rotating chassis 4 to be slidably connected to the inner wall of the base 6 .

In conjunction with Fig. 3, it can be seen from the enlarged view of the A area in Fig. 2 that there are six screw holes 61 on the vertical side of the base 6, and the screw holes 61 are threaded with the push rod 5 in one-to-one correspondence; the base 6 The bottom of the inner solid part is provided with an opening 64 for the contact between the push rod 5 and the rotating chassis 4; The distance from the side of the cylinder to the center of the circle is equal to the distance from the top of the upper tooth of the rotating helical tooth 41 to the center of the circle. When the adjusting screw 31 touches the limit block 44, the adjusting screw 31 stops moving, so that the rotating chassis 4 stops rotating. The limiting block 44 has the effect of preventing the push rod 5 from rotating out of the screw hole 61 , and the position of the limiting block 44 can be referred to FIG. 4 .

2, 3, and 4, it can be known that the regulator 3 is connected to the adjusting screw 31 through the adjusting rod 32, wherein the adjusting screw 31 is connected to the vertical side of the rotating chassis 4, and the fixed snap ring 33 is fixedly connected to the adjusting rod 32. , is stuck in the hollow groove of the solid part in the handle 2, so that the regulator 3 does not move horizontally.

As shown in FIG. 2 and FIG. 5 , on the base chassis 63 , under the snap ring 43 , there is a supporting ring that is slidably connected with the snap ring 43 to withstand the snap ring 43 so that the rotating chassis 4 can be supported when it rotates. The area is the contact area between the snap ring 43 and the retainer ring.

In Fig. 5, a slot 53 that is screwed with the tool is provided on the tail of the push rod 5. This preferred embodiment is a cross-shaped groove as shown in the figure. Through the slot 53, the installation of the push rod 5 is easier. Convenient and fast.

At the same time, regarding the implementation of each transmission mechanism, as shown in Figure 3, the screw hole 61 is provided with a radial internal thread 62, as shown in Figure 4, the adjusting screw 31 includes an adjusting thread 311, and the rotating chassis 4 is included in the vertical Rotating helical teeth 41 on one side, rotating straight teeth 42 on the horizontal side, as shown in Figure 5, the surface of the push rod 5 forms radial gear teeth 51 in the longitudinal direction and radial external threads 52 in the transverse direction .

The transmission mode is realized by the above-mentioned transmission mechanism. As shown in FIG. As shown in Figure 5, the rotary straight teeth 42 on the horizontal side of the rotating chassis 4 are meshed with the radial gear teeth 51 on the surface of the push rod 5, so that the horizontal side of the rotating chassis 4 is connected to the push rod 5 Form a cylindrical gear transmission; as shown in Figure 3, the radial external thread 52 on the surface of the push rod 5 is threadedly connected with the radial internal thread 62 on the screw hole 61, so that the push rod 5 and the screw hole 61 form an axial helical transmission, and push When the rod 5 is threaded with the screw hole 61, the contact area between the two is relatively large, which can provide a large twisting support force. At the same time, the multi-stage linkage method makes the final clamping force acting on the bolt or nut relatively relatively larger.

In summary, taking the twisted positive hexagon bolt as an example, the working process of the present invention is as follows:

(1) Align the base 6 with the regular hexagonal bolt that needs to be screwed;

(2) Assuming that the clamping opening formed by the six push rods 5 is smaller than the size of the regular hexagonal bolts, that is, a larger clamping diameter is required, then turn the regulator 3 counterclockwise, and adjust the rod 32 to drive the adjustment. The screw 31 rotates counterclockwise, and drives the rotating chassis 4 to move counterclockwise through the worm gear and worm transmission of the adjusting thread 311 and the rotating helical gear 41;

(3), the cylindrical gear transmission of the rotating straight teeth 42 and the radial gear teeth 51 located on the rotating chassis 4 drives the push rod 5 to rotate counterclockwise;

(4) Since the radial external thread 52 and the radial internal thread 62 are forward-rotating threads, through the axial screw transmission of the radial external thread 52 and the radial internal thread 62 on the surface of the push rod 5, when the push rod 5 counterclockwise When rotating, the push rod 5 moves radially outward along the screw hole 61, that is, the six push rods move radially outward at the same time to form a larger clamping diameter;

(5) When the clamping diameter is larger than the size of the hexagonal bolt, stop rotating the adjuster 3, and put the base 6 on the hexagonal bolt, so that the six push rods 5 correspond to the centers of the six faces of the hexagonal bolt Location;

(6) At this time, turn the adjuster 3 clockwise to make the push rod 5 move radially inward until it contacts the surface of the hexagon bolt, and further turn the adjuster 3 clockwise to make the push rod 5 and the hexagon bolt in the clamping state;

(7) Turn the hexagonal bolt through the handle 2, take out the hexagonal bolt, turn the regulator 3 counterclockwise to move the push rod 5 radially outward, and loosen the hexagonal bolt.

(8) If in step (2), the clamping diameter formed by the six push rods 5 is larger than the size of the regular hexagonal bolt, then directly proceed to steps (5)-(7).

In the above working process, it is also applicable to devices whose sides are multiples of 6 and can be loosened, such as regular hexagonal nuts, regular twelve-headed bolts, etc., and should not be limited to regular hexagonal bolts.

In the second embodiment of the present invention, on the basis of the preferred embodiment, the radial external thread 52 and the radial internal thread 62 are converted into anti-rotation threads, and the entire working process is as follows:

(1) Align the base 6 with the regular hexagonal bolt that needs to be screwed;

(2) Assuming that the clamping opening formed by the six push rods 5 is smaller than the size of the regular hexagonal bolts, that is, a larger clamping diameter is required, and the regulator 3 is turned clockwise to drive the adjusting screw by adjusting the rod 32 31 rotates clockwise, and drives the rotating chassis 4 to move clockwise through the worm gear and worm transmission of the adjusting thread 311 and the rotating helical gear 41;

(3), the cylindrical gear transmission of the rotating straight teeth 42 and the radial gear teeth 51 located on the rotating chassis 4 drives the push rod 5 to rotate clockwise;

(4) Since the radial external thread 52 and the radial internal thread 62 are anti-rotating threads, through the axial screw transmission of the radial external thread 52 and the radial internal thread 62 on the surface of the push rod 5, when the push rod 5 clockwise When rotating, the push rod 5 moves radially outward along the screw hole 61, that is, the six push rods move radially outward at the same time to form a larger clamping diameter;

(5) When the clamping diameter is larger than the size of the hexagonal bolt, stop rotating the adjuster 3, and put the base 6 on the hexagonal bolt, so that the six push rods 5 correspond to the centers of the six faces of the hexagonal bolt Location;

(6) At this time, turn the regulator 3 counterclockwise to move the push rod 5 radially inward until it contacts the surface of the hexagonal bolt, and further turn the adjusting screw 31 backward to make the pushrod 5 and the hexagonal bolt in the clamping state;

(7) Turn the hexagonal bolt through the handle 2. After taking out the hexagonal bolt, turn the regulator 3 clockwise to move the push rod 5 radially outward, and then loosen the hexagonal bolt.

(8) If in step (2), the clamping diameter formed by the six push rods 5 is larger than the size of the regular hexagonal bolt, then directly proceed to steps (5)-(7).

In the third embodiment of the present invention, on the basis of the preferred embodiment, the position of the regulator 3 is changed from the tail of the handle 2 to other positions on the outer wall of the handle 2, that is, at the upper and lower sides of the handle 2. side or left and right.

In the fourth embodiment of the present invention, on the basis of the preferred embodiment, the groove shape of the slot 53 is changed to a straight groove shape.

In the fifth embodiment of the present invention, on the basis of the preferred embodiment, the number of push rods 5 and screw holes 61 is changed from six to three, so that it can be applied to a multiple of 3 sides and can be loosened. device.

In the sixth embodiment of the present invention, on the basis of the preferred embodiment, the number of push rods 5 and screw holes 61 is changed from six to four, so that it can be applied to the number of sides that are multiples of 4 and can be loosened. device.

In the seventh embodiment of the present invention, on the basis of the preferred embodiment, the number of push rods 5 and screw holes 61 is modified from six to five, so that it can be applied to the number of sides that are multiples of 5 and can be loosened. device.

Based on the preferred embodiment, the fifth, sixth, and seventh embodiments, it can be seen that when the number of push rods 5 and screw holes 61 is modified to more than six, it should be regarded as an equivalent change, which belongs to the equivalent of the present invention Embodiment; On the basis of the second, third, and fourth, the preferred embodiment is simply combined with the replacement or modification of the second, third, and fourth embodiments, which should also be regarded as an equivalent change, such as in the comparison On the basis of the preferred embodiment, the radial external thread 52 and the radial internal thread 62 are converted into anti-rotation threads, and the position of the regulator 3 is changed from the tail of the handle 2 to the other position of the outer wall of the handle 2, The eighth embodiment formed in this way is only a simple combined modification of the second and third embodiments, and should be regarded as an equivalent change, which belongs to the equivalent embodiment of the present invention; of course, based on the changes in the above two situations, such as the number of modifications New embodiments formed in combination with changing the thread direction should also be regarded as equivalent changes and belong to equivalent embodiments of the present invention.

At the same time, the technical solution that should not be limited by the preferred embodiment also includes that the positions of the push rod 5 and the screw hole 61 on the base 6 can have unequal angles and uneven distribution, and the distance from the limit block 44 to the center of the circle can be greater than the rotation angle. The distance between the tooth groove bottom of the tooth 41 and the center of the circle is enough, the scheme of the transmission connection between the adjustment screw 31 and the rotating chassis 4, the scheme of the transmission connection between the rotating chassis 4 and the push rod 5, the scheme of the threaded connection between the push rod 5 and the screw hole 61, etc. Wait.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form; all those skilled in the art can smoothly implement the present invention as shown in the attached drawings and the above descriptions. However, any equivalent change, modification and evolution made by those skilled in the art without departing from the scope of the technical solution of the present invention by utilizing the technical content disclosed above are all equivalent implementations of the present invention Example; at the same time, all changes, modifications and evolutions made to the above embodiments according to the substantive technology of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims (8)

1. a kind of monkey wrench adjusted easy to bore, including the wrench body of bolt or nut can be twisted（1）With wrench body （1）The handle of connection（2）, the wrench body（1）Including push rod（5）, pedestal（6）, adjust push rod（5）The driver of movement Structure；It is characterized in that：The pedestal（6）Vertical side be provided with and push rod（5）One-to-one screw hole（61）, the screw hole （61）With push rod（5）It is threadedly coupled, the transmission mechanism includes being arranged on handle（2）The adjuster in outside（3）；The driver Structure includes being located at pedestal（6）Interior swivel base（4）, the adjuster（3）By adjusting strut（32）It is connected with adjusting screw rod （31）, the adjusting screw rod（31）With swivel base（4）Vertical side connection, the swivel base（4）Horizontal side is with pushing away Bar（5）It is sequentially connected, so as to adjust push rod（5）Rotation.

2. the monkey wrench according to claim 1 adjusted easy to bore, it is characterised in that：In the adjusting strut （32）On, being provided with makes adjuster（3）The not fixing clasp of occurred level movement（33）.

3. the monkey wrench according to claim 1 adjusted easy to bore, it is characterised in that：The adjusting screw rod（31）Bag Include adjusting screw thread（311）, the swivel base（4）It is included on vertical side with adjusting screw thread（311）The rotation helical teeth of engagement （41）, the adjusting screw rod（31）With swivel base（4）Vertical side formed Worm Wheel System.

4. the monkey wrench according to claim 1 adjusted easy to bore, it is characterised in that：The swivel base（4）Bag Include the rotation straight-tooth in horizontal side（42）, the push rod（5）Surface formed in the vertical with rotation straight-tooth（42）Engagement The radial direction gear teeth（51）, the swivel base（4）Horizontal side and push rod（5）Form column gear transmission.

5. the monkey wrench according to claim 1 adjusted easy to bore, it is characterised in that：The push rod（5）Surface Radial direction external screw thread is formed in the horizontal（52）, the screw hole（61）On be provided with and radial direction external screw thread（52）The footpath of engagement is inside Screw thread（62）, the push rod（5）With screw hole（61）Form axial screw transmission.

6. the monkey wrench according to claim 1 adjusted easy to bore, it is characterised in that：The swivel base（4） Including making swivel base（4）With pedestal（6）The snap ring that madial wall is slidably connected（43）, limitation swivel base（4）It is rotating spacing Block（44）.

7. the monkey wrench according to claim 1 adjusted easy to bore, it is characterised in that：The push rod（5）Afterbody On be provided with and coordinate the fluting twisted with instrument（53）, and push rod（5）It is directed toward the same center of circle.

8. the monkey wrench according to claim 1 adjusted easy to bore, it is characterised in that：The adjuster（3）Set In handle（2）Afterbody, and shape and handle（2）Shape is corresponding.