CN209774486U

CN209774486U - Anti-loose adjustable wrench

Info

Publication number: CN209774486U
Application number: CN201920536285.9U
Authority: CN
Inventors: 张一达
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2019-12-13
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a locking monkey spanner that moves belongs to tool equipment technical field. The movable wrench comprises a body, a movable jaw, a cover, a crank, a belleville spring, a gear set, balls and a spring, wherein the crank is pressed by a thumb to drive the gear set to overcome the elasticity of the belleville spring and slide in a gear set positioning hole, so that the separation of an internal spline and an external spline is realized, the external spline is positioned in a clearance groove at the moment, the crank is rotated by the thumb to drive the gear set to rotate and then drive the movable jaw to slide in a T-shaped groove slideway, a ratchet mechanism has a positioning function to ensure that the external spline is combined with the internal spline under the elasticity action of the belleville spring after the thumb is loosened; the design progressive precision is 1mm, and a gear rack transmission mechanism is adopted to improve the transmission precision; the spline transmission mechanism is adopted, the transmission precision is improved, and the structural stability is improved.

Description

Anti-loose adjustable wrench

Technical Field

The utility model relates to a locking monkey wrench that moves belongs to tool equipment technical field.

Background

In daily life and work, a wrench is often used, such as household appliance maintenance, mechanical maintenance or water pipe maintenance, and the like, and the common wrench comprises a solid wrench and an adjustable wrench, wherein one end or two ends of the solid wrench are provided with openings with fixed sizes for screwing nuts or bolts with certain sizes; the adjustable wrench has the advantages that the opening width of the adjustable wrench can be adjusted within a certain size range, bolts or nuts of different specifications can be screwed, and the adjustable wrench is flexible to use and wide in application range compared with a solid wrench. The existing adjustable wrench is mostly in a structure of a turbine and a shaft pin, and a positioning screw of a movable jaw often falls off, so that the turbine is scattered, the adjustable wrench is disassembled, the movable jaw also often has a displacement phenomenon in the using process, the worm and the gear are always required to be readjusted, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a looseness-proof adjustable wrench, which adopts a ratchet wheel sizing structure; the design progressive precision is 1mm, and a gear rack transmission mechanism is adopted to improve the transmission precision; the spline transmission mechanism is adopted, the transmission precision is improved, the structural stability is improved, the jaw is accurately positioned during use, the looseness is not easy to occur, and the use is convenient and the precision is high.

The utility model provides a technical scheme that its technical problem adopted is: an anti-loosening adjustable wrench comprises a body and a movable jaw, wherein the body consists of a fixed jaw and a wrench, and a gear set mounting hole is formed in the right side of the lower portion of the fixed jaw; the movable jaw is/are a cylinder, wherein one right-angle edge is matched with the fixed jaw and used for clamping objects such as bolts or nuts, a T-shaped key is arranged below the other right-angle edge, and a rack is also arranged below the T-shaped key; a T-shaped groove slideway is processed at the matching part of the body and the movable jaw, and the body and the movable jaw are in sliding fit through the T-shaped groove slideway; the gear set mounting hole is a deep hole, a gear set positioning hole is formed in the center of the circle, and a positioning groove A and a positioning groove B are further formed in the two sides of the diameter of the gear set mounting hole respectively.

The gear set comprises gear and external splines, and gear one side is equipped with gear side center pin, and external splines one side is equipped with external splines side center pin, and external splines side center pin tip is equipped with center pin terminal surface recess, and the recess center is equipped with the bolt hole.

And sequentially placing the belleville spring, the gear set, the cover and the crank into the gear set mounting hole, and fixing the crank on the cover through a bolt. The cover is internally processed into an internal spline matched with the external spline of the gear set, and the front end of the internal spline is processed with a hollow groove to realize the combination and separation of the internal spline and the external spline. The body and the processing of lid cooperation department have constant head tank A, constant head tank B, lid and body cooperation department processing have location platform A, location platform B, realize mutual location between body and the lid, it has screw via hole A to cover processing, screw via hole B to cover processing, processing has screw hole A on the body, screw hole B, through screw A, body and lid are connected to screw B, the processing of recess radial side wall department has the ball locating hole, ball locating hole position is parallel with the internal spline tooth central line of covering, the ball is installed in the ball locating hole, ball one side pressure equipment has the spring, the body, the lid, the gear train, the ball, form ratchet after the spring combination assembly, realize moving jaw accurate location.

The rack is matched with the gear set in a complete set, the rack is not in a full-rack structure, and two ends of the rack are not machined, so that the rack is guaranteed not to be separated from the gear.

A disc spring is arranged at a side gap where the gear side of the gear set and the side surface of the body are in mutual contact, a central through hole is machined in the center of the disc spring, the central shaft of the gear side of the gear set is positioned at the position of the gear positioning hole of the body through the central through hole of the disc spring, a cover is arranged on one side of an external spline of the gear set, and a through hole is machined in the center of the cover.

The central shaft at the side of the outer spline is higher than the matching surface of the body and the cover, a crank is matched with the end surface groove of the central shaft, a boss and a bolt through hole are processed at the matching position of the crank and the end surface groove of the central shaft, and the crank and the central shaft at the side of the outer spline of the gear set are positioned and connected into a whole through bolts.

The use process comprises the following steps:

The thumb presses the crank to drive the gear set to overcome the elasticity of the belleville spring, so that the gear set slides in the gear set positioning hole, separation of the internal spline and the external spline is achieved, the external spline is located in the clearance groove, the thumb rotates the crank to drive the gear set to rotate and then drive the movable jaw to slide in the T-shaped groove slideway, the forward and reverse directions of the rotating crank control the sliding direction of the movable jaw in the T-shaped groove slideway, the opening size between the movable jaw and the fixed jaw is controlled, and the ratchet mechanism has a positioning function to ensure that the external spline is combined with the internal spline under the elasticity of the belleville spring after the thumb is.

The utility model has the advantages that: the utility model provides a locking monkey spanner that moves, the utility model discloses a ratchet scale structure, the design upgrades precision 1mm, has adopted rack and pinion drive mechanism, has promoted the transmission precision, has adopted spline drive mechanism, has promoted the transmission precision, has improved structural stability, and the location of keeping silent during the use is accurate, is difficult not hard up, and convenient to use, precision are high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic perspective assembly view of the body and the movable jaw.

Fig. 3 is a perspective assembly view of the movable jaw and the gear set.

Fig. 4 is an exploded perspective view of the present invention.

Fig. 5 is a schematic view of the lid structure.

Fig. 6 is a schematic view of the crank structure.

Fig. 7 is a schematic structural view of a belleville spring.

Fig. 8 is a partially enlarged schematic view of the body.

fig. 9 is a schematic view of a rack structure.

Reference numbers in the figures:

1. The gear set comprises a body, 101, positioning grooves A, 102, positioning grooves B, 103, gear set positioning holes, 104, T-shaped groove slideways, 105, threaded holes A, 106, threaded holes B, 2, movable jaws, 201, T-shaped keys, 202, racks, 3, covers, 301, positioning tables A, 302, screw through holes A, 303, positioning tables B, 304, screw through holes B, 305, internal splines, 306, blank grooves, 307, through holes, 308, ball positioning holes, 4, screws A, 5, screw B, 6, cranks, 601, bosses, 602, bolt through holes, 7, bolts, 8, belleville springs, 801, center through holes, 9, balls, 10, gear sets, 1001, gear side center shafts, 1002, external spline side center shafts, 1003, center shaft end face grooves, 1004, bolt holes, 1005, external splines, 1006, gears, 11 and springs.

Detailed Description

Referring to the attached drawings 1-9, an anti-loosening adjustable wrench comprises a body 1 and a movable jaw 2, wherein the body 1 consists of a fixed jaw and a wrench, and a gear set mounting hole is formed in the right side of the lower portion of the fixed jaw; the movable jaw 2 is a cylinder of 1/4, wherein a right-angle edge is matched with the fixed jaw for clamping objects such as bolts or nuts, a T-shaped key 201 is arranged below the other right-angle edge, and a rack 202 is arranged below the T-shaped key 201; a T-shaped groove slideway 104 is processed at the matching part of the body 1 and the movable jaw 2, and the body 1 and the movable jaw 2 are in sliding fit through the T-shaped groove slideway 104; the gear set mounting hole is a deep hole, the center of the circle is provided with a gear set positioning hole 103, and two sides of the diameter are respectively provided with a positioning groove A101 and a positioning groove B102.

The gear set 10 is composed of a gear 1006 and an external spline 1005, a gear side center shaft 1001 is provided on the gear 1006 side, an external spline side center shaft 1002 is provided on the external spline 1005 side, a center shaft end face groove 1003 is provided on the end portion of the external spline side center shaft 1002, and a bolt hole 1004 is provided in the center of the groove.

And sequentially placing a belleville spring 8, a gear set 10, the cover 3 and the crank 6 into the gear set mounting hole, and fixing the crank 6 on the cover 3 through a bolt 7. The cover 3 is internally processed into an internal spline 305 matched with an external spline 1005 of the gear set 10, and the front end of the internal spline 305 is processed with a hollow groove 306 to realize the combination and separation of the internal spline 305 and the external spline 1005. Positioning grooves A101 and B102 are processed at the matching position of the body 1 and the cover 3, a positioning table A301 and a positioning table B303 are processed at the matching position of the cover 3 and the body 1, mutual positioning between the body 1 and the cover 3 is realized, a screw through hole A302 and a screw through hole B303 are processed on the cover 3, a threaded hole A105 and a threaded hole B106 are processed on the body 1, the body 1 and the cover 3 are connected through a screw A4 and a screw B5, a ball positioning hole 308 is processed at the radial side wall of the undercut 306, the position of the ball positioning hole 308 is parallel to the tooth center line of an internal spline 305 on the cover 3, a ball 9 is installed in the ball positioning hole 308, a spring 11 is pressed on one side of the ball 9, and the body 1, the cover 3, the gear set 10, the ball 9 and the spring 11 are assembled to form a.

The rack 202 is matched with the gear set 10 in a set, and the rack 202 is not in a full-rack structure, as shown in fig. 9, two ends are not machined, so that the rack 202 is ensured not to be separated from the gear 1006.

A disc spring 8 is arranged at a side surface gap where the gear 1006 side of the gear set 10 and the body 1 are contacted with each other, a central through hole 801 is formed in the center of the disc spring 8, a central shaft 1001 on the gear side of the gear set 10 is positioned to a gear positioning hole 103 of the body 1 through the disc spring central through hole 801, a cover 3 is arranged on one side of an external spline 1005 of the gear set 10, and a through hole 307 is formed in the center of the cover.

The height of the external spline side central shaft 1002 is higher than the matching surface of the body 1 and the cover 3, a crank 6 is matched with a central shaft end surface groove 1003, a boss 601 and a bolt through hole 602 are machined at the matching position of the crank 6 and the central shaft end surface groove 1003, and the crank 6 and the central shaft side central shaft are positioned and connected into a whole through bolts.

The use process comprises the following steps:

the crank 6 is pressed by a thumb to drive the gear set 10 to overcome the elasticity of the belleville spring 8, so that the gear set 10 slides in the gear set positioning hole 103, the separation of the external splines 1005 of the internal spline 305 is realized, at the moment, the external splines 1005 are positioned in the clearance groove 306, the crank 6 is rotated by the thumb to drive the gear set 10 to rotate so as to drive the movable jaw 2 to slide in the T-shaped groove slide way 104, the forward and reverse directions of the crank 6 are rotated to control the sliding direction of the movable jaw 2 in the T-shaped groove slide way 104, the opening size between the movable jaw and the fixed jaw is further controlled, and the ratchet mechanism has a positioning function to ensure that the external splines 1005 are combined with the internal.

Claims

1. The utility model provides an anti-loosening adjustable wrench, includes body (1) and moves and keeps silent (2), and body (1) is by deciding keep silent and spanner and constitute its characterized in that: a gear set mounting hole is formed in the right side of the lower part of the fixed jaw; a T-shaped key (201) is arranged below a right-angle side of the movable jaw (2), and a rack (202) is arranged below the T-shaped key (201); a T-shaped groove slideway (104) is processed at the matching part of the body (1) and the movable jaw (2), and the body (1) and the movable jaw (2) are in sliding fit through the T-shaped groove slideway (104); a gear set (10) is arranged in the gear set mounting hole, a cover (3) is arranged on the gear set (10), and a crank (6) is arranged on the cover (3).

2. A loosening prevention spanner as claimed in claim 1, wherein: the gear set (10) consists of a gear (1006) and an external spline (1005), a gear side central shaft (1001) is arranged on one side of the gear (1006), an external spline side central shaft (1002) is arranged on one side of the external spline (1005), a central shaft end face groove (1003) is arranged at the end part of the external spline side central shaft (1002), and a bolt hole (1004) is arranged in the center of the groove.

3. A loosening prevention spanner as claimed in claim 1 or 2, wherein: the gear set (10) can slide in the body (1), and the sliding fit between the gear set external spline (1005) and the internal spline (305) is realized.

4. A loosening prevention spanner as claimed in claim 2, wherein: the gear set external spline (1005) is characterized in that a cover (3) is installed on one side of the external spline (1005), a through hole (307) is machined in the center of the cover (3), an internal spline (305) matched with the gear set external spline (1005) is machined in the cover (3), a hollow cutter groove (306) is machined in the front end of the internal spline (305), and the internal spline (305) and the external spline (1005) are combined and separated.

5. A loosening prevention spanner as claimed in claim 1, wherein: the rack (202) is of a non-full-rack structure, and racks are not processed at two ends and are matched with the gear set (10) in a complete set without separation.

6. a loosening prevention spanner as claimed in claim 1, wherein: a disc spring (8) is installed in a side gap where one side of the gear (1006) of the gear set (10) and the body (1) are in mutual contact, a central through hole (801) is machined in the center of the disc spring (8), and a central shaft on one side of the gear (1006) of the gear set (10) is positioned in a gear positioning hole (103) of the body through the central through hole (801) of the disc spring (8).

7. A loosening prevention spanner as claimed in claim 1, wherein: body (1) and lid (3) cooperation department processing have constant head tank A (101), constant head tank B (102), lid (3) and body (1) cooperation department processing have location platform A (301), location platform B (303), realize fixing a position each other between body (1) and the lid (3), location platform A (301) on lid (3), location platform B (303) are processed respectively and are had screw via hole A (302), screw via hole B (304), processing threaded hole A (105) on the body, threaded hole B (106), through screw A (4), screw B (5) hookup body (1) and lid (3).

8. The anti-loosening adjustable wrench according to claim 4, further comprising: ball positioning holes (308) are machined in the radial side walls of the undercut grooves (306), the positions of the ball positioning holes (308) are parallel to the tooth center lines of the internal splines (305) on the cover (3), balls (9) are installed in the ball positioning holes (308), and springs (11) are installed on one sides of the balls (9) in a pressing mode.

9. A loosening prevention spanner as claimed in claim 1, wherein: the body (1), the cover (3) and the gear set (10) are assembled to form a ratchet mechanism, so that the movable jaw (2) can be accurately positioned.

10. A loosening prevention spanner as claimed in claim 2, wherein: the central point of outer spline side center pin (1002) is processed with bolt hole (1004), the terminal surface is processed into the notch form, gear train outer spline side center pin (1002) highly is higher than body (1) and lid (3) fitting surface, with gear train outer spline side center pin terminal surface recess (1003) cooperation have crank (6), crank (6) and center pin terminal surface recess (1003) cooperation department are processed with boss (601) to be processed with bolt via hole (602), fix a position, connect into an organic whole with gear train outer spline side center pin (1002) through bolt (7).