CN209812167U

CN209812167U - Bidirectional retaining wrench

Info

Publication number: CN209812167U
Application number: CN201820509363.1U
Authority: CN
Inventors: 陈知泰
Original assignee: Shenzhen Polytechnic
Current assignee: Shenzhen Polytechnic
Priority date: 2018-04-11
Filing date: 2018-04-11
Publication date: 2019-12-20
Anticipated expiration: 2028-04-11

Abstract

The utility model provides a two-way stopping spanner, includes cambered surface gear train, cambered surface stick telescopic machanism, the cambered surface gear train includes base, first cambered surface gear, upper cover, second cambered surface gear, bearing, pivot, is equipped with first cambered surface gear and second cambered surface gear in the middle of the pivot, cambered surface stick telescopic machanism includes cam regulation knot mechanism, and cam regulation mechanism includes first cambered surface stick, second cambered surface stick, first compression spring, cam seat, camshaft and slide, is equipped with first cam and second cam in the middle of the camshaft, and position installation is on the cam seat about first cambered surface stick and the second cambered surface stick, and first cambered surface stick and the excellent right-hand member face of second cambered surface stick contact with the cam surface of first cam and second cam respectively, is equipped with a first compression spring between first cambered surface stick and second cambered surface stick and the cam seat respectively. Can realize two-way stopping through adjusting, it is more convenient to use, and practical range is wider, and the frictional force that the inside action produced is littleer in the use simultaneously, improves the life of spanner.

Description

Bidirectional retaining wrench

Technical Field

The utility model relates to a fastening tool specifically is a two-way stopping spanner.

Background

The ratchet mechanism is a unidirectional intermittent motion mechanism consisting of a ratchet wheel and a pawl, has a unidirectional braking effect, and is widely applied to ratchet wrenches. In actual production, the condition that workpieces can be pulled in the forward direction and the reverse direction is required to be common, so that the production requirement can not be met only by one-way braking, in addition, the friction between a pawl and a ratchet wheel of a common ratchet mechanism is large, the tip of the pawl is seriously abraded after the ratchet mechanism is used for many times, and the service life of the wrench is influenced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above problems, the utility model provides a two-way stopping spanner can two-way pull the work piece, and the frictional force of spanner internal motion is less.

(II) technical scheme

In order to realize the above-mentioned two-way stopping function that possesses, the utility model provides a following technical scheme: a bidirectional stop wrench comprises a cambered surface gear set and a cambered surface rod telescopic mechanism, wherein the cambered surface gear set comprises a base, a first cambered surface gear, an upper cover, a second cambered surface gear, a bearing and a rotating shaft, a base cavity is formed in the left side of the base, the rotating shaft is arranged in the middle of the base cavity, the rotating shaft is respectively connected with the lower side of the base cavity and an inner hole of the upper cover through a pair of bearings, the upper cover and the base are fixed through screws, and the first cambered surface gear and the second cambered surface gear are arranged in the middle of the rotating shaft; the cambered surface rod telescopic mechanism comprises a cam adjusting mechanism, the cambered surface rod telescopic mechanism is arranged in a base sliding groove of the base, the right end of the cam adjusting mechanism and the right end face of the base sliding chute are provided with a second expansion spring, the cam adjusting mechanism comprises a first cambered surface bar, a second cambered surface bar, a first compression spring, a cam seat, a cam shaft and a sliding seat, the middle of the camshaft is provided with a first cam and a second cam, the upper and lower positions of the first cambered surface rod and the second cambered surface rod are arranged on the cam seat, the matching relationship is clearance fit, the right end faces of the first cambered rod and the second cambered rod are respectively contacted with the cam faces of the first cam and the second cam, a first compression spring is respectively arranged between the first cambered surface rod and the cam seat and between the second cambered surface rod and the cam seat, the cam shaft is in clearance fit with the cam seat and the sliding seat respectively, and the cam seat is fixedly connected with the sliding seat.

Preferably, the first cambered surface tooth and the second cambered surface tooth are of single-side cambered surface structures and opposite in direction, the first cambered surface rod and the second cambered surface rod are of single-side cambered surface structures and opposite in direction, during assembly, the direction of the cambered surface of the first cambered surface rod is opposite to that of the cambered surface of the first cambered surface tooth, and the direction of the cambered surface of the second cambered surface rod is opposite to that of the cambered surface of the second cambered surface tooth.

Preferably, the left shaft of the first cambered rod is a square shaft, and the structure of the second cambered rod is the same as that of the first cambered rod.

Preferably, the first cam and the second cam are opposite in direction.

Preferably, a first boss is arranged on the left side of the sliding groove of the base.

Preferably, the upper side of the cam seat is provided with an arc chute, the angle of the arc chute is 180 degrees, the knob is fixed with the cam shaft, and the size of the knob boss of the knob can be just inserted into the arc chute.

Preferably, a sleeve square shaft matched with a common sleeve or a screwdriver bit is arranged on the lower side of the rotating shaft.

Preferably, a sliding seat boss is arranged on the right side of the sliding seat, and the second compression spring is sleeved on the sliding seat boss.

(III) advantageous effects

The utility model provides a two-way stopping spanner possesses following beneficial effect:

the bidirectional retaining wrench is provided with the cambered surface gear set and the cambered surface telescopic rod, wherein the direction of a first cambered surface tooth of the cambered surface gear set is opposite to that of a cambered surface of a first cambered surface rod or the direction of a second cambered surface tooth of the cambered surface gear set is opposite to that of a cambered surface of a second cambered surface rod, and a second telescopic spring is arranged on the right end of a cam adjusting mechanism of the cambered surface rod telescopic mechanism and the right end of a base sliding groove, so that the effect similar to a ratchet mechanism is achieved, and the retaining function is achieved; the rotating shaft is provided with first arc-surface teeth and second arc-surface teeth, the directions of the arc surfaces are opposite, and the cam mechanism of the arc-surface rod telescopic mechanism is provided with a first arc-surface rod and a second arc-surface rod and has an adjustable bidirectional retaining function; in addition, the first arc-shaped rod is in arc surface contact with the first arc-shaped teeth or the second arc-shaped rod is in arc surface contact with the second arc-shaped teeth, the movement process is tangential movement, friction is reduced, and the service life of the wrench is prolonged. Generally speaking, two-way stopping spanner has the stopping function similar to ratchet, can realize two-way stopping simultaneously through adjusting, and it is more convenient to use, and practical range is wider, and the frictional force that inside surging produced is littleer in the while use, improves the practical life of spanner.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the retaining mechanism of the present invention;

FIG. 3 is a schematic view of the cam adjusting mechanism of the present invention;

FIG. 4 is a perspective view of the position relationship between the gear with cambered surface and the rod with cambered surface of the present invention;

fig. 5 is a top view of the position relationship between the arc-shaped gear and the arc-shaped rod of the present invention.

In the figure: 1 cambered surface gear set, 10 bases, 10a base cavities, 10b base bosses, 10c base chutes, 11 first cambered surface gears, 11a first cambered surface teeth, 12 upper covers, 13 second cambered surface gears, 13a second cambered surface teeth, 14 bearings, 15 rotating shafts, 15a sleeve square shafts, 2 cambered surface rod telescopic mechanisms, 20 cam adjusting mechanisms, 201 first cambered surface rods, 202 second cambered surface rods, 203 first compression springs, 204 cam seats, 205 cam shafts, 205a first cams, 205b second cams, 206 knobs, 206a knob bosses, 207 sliders, 207a slider bosses and 21 second compression springs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-1, the present invention provides a technical solution: a bidirectional retaining wrench comprises an arc-surface gear set 1 and an arc-surface rod telescopic mechanism 2, wherein the arc-surface gear set 1 comprises a base 10, a first arc-surface gear 11, an upper cover 12, a second arc-surface gear 13, bearings 14 and a rotating shaft 15, a base cavity 10a is formed in the left side of the base 10, the rotating shaft 15 is arranged in the middle of the base cavity 10a, the rotating shaft 15 is respectively connected with the lower side of the cavity part of the base 10 and an inner hole of the upper cover 12 through a pair of bearings 14, the upper cover 12 and the base 10 are fixed through screws, the rotating shaft can rotate, and the first arc-surface gear 11 and the second arc-surface gear 13a are arranged in the middle; the cambered rod telescopic mechanism 2 comprises a cam adjusting mechanism 20, the cambered rod telescopic mechanism 2 is arranged in a base sliding groove 10c of a base 10, a second telescopic spring is arranged between the right end of the cam adjusting mechanism 20 and the right end face of the base sliding groove 10c, the cam adjusting mechanism 20 comprises a first cambered rod 201, a second cambered rod 202, a first compression spring 203, a cam seat 204, a cam shaft 205 and a sliding seat 207, a first cam 205a and a second cam 205b are arranged in the middle of the cam shaft 205, the first cambered rod 201 and the second cambered rod 202 are vertically arranged on the cam seat 204 and are in clearance fit, the first cambered rod 201 and the second cambered rod 202 can slide on the cam seat 204, the right end faces of the first cambered rod 201 and the second cambered rod 202 are respectively contacted with the cam faces of the first cam 205a and the second cam 205b, and a first compression spring 203 is respectively arranged between the first cambered rod 202 and the second cambered rod 202 and the cam seat 204, the cam shaft 205 is in clearance fit with the cam seat 204 and the sliding seat 207 respectively, and the cam seat 204 and the sliding seat 207 are fixedly connected, and the cam shaft 15 can rotate.

The first arc-shaped teeth 11a and the second arc-shaped teeth 13a are of single-sided arc-shaped structures and opposite in direction, and the first arc-shaped bar 201 and the second arc-shaped bar 202 are of single-sided arc-shaped structures and opposite in direction. During assembly, the direction of the cambered surface of the first cambered rod 201 is opposite to that of the cambered surface of the first cambered teeth 11a, and the direction of the cambered surface of the second cambered rod 202 is opposite to that of the cambered surface of the second cambered teeth 13a, so that a retaining mechanism in two directions can be provided.

The left side shaft of the first arc rod 201 is a square shaft 201a, so that the first arc rod 201 can not rotate on the cam seat 204, and the second arc rod 202 has the same structure and the same function.

The first cam 205a and the second cam 205b are opposite in direction, and when the cam shaft 205 rotates to the leftmost side or the rightmost side, the first arc rod 201 and the second arc rod 202 can be made to extend out of the left side of the cam seat 204 alternatively, so as to play a role in selecting a backstop mechanism.

The left side of the sliding groove 10c of the base 10 is provided with a first boss 10b for preventing the arc rod telescopic mechanism 2 from sliding out of the sliding groove 10c of the base.

The upper side of the cam seat 204 is provided with an arc chute 204a, the angle of the arc chute 204a is 180 degrees, the knob 206 is fixed with the cam shaft 205, and the knob boss 206a of the knob 206 has a size which can be just inserted into the arc chute 204a to provide guidance for the knob 206.

The lower side of the rotating shaft 15 is provided with a sleeve square shaft 15a matched with a common sleeve or a screwdriver bit, and the sleeve and the screwdriver bit on the market are butted to form a wrench.

The right side of the sliding seat 207 is provided with a sliding seat boss 207a, and the second compression spring 21 is sleeved on the sliding seat boss 207a to prevent the spring from falling off.

When the anti-backlash mechanism is used, according to the required direction, the knob 206 is shifted to the leftmost end or the rightmost end, the knob 206 can drive the cam shaft 205 to rotate, one of the first arc rod 201 or the second arc rod 202 extends out of the left end of the cam seat 204 under the action of the cam mechanism, the anti-backlash mechanism and the arc gear set form a backstop mechanism, and the knob 206 is shifted to the other end when the backstop in the other direction is required. For example, when the wrench of this embodiment is used to tighten a nut, a sleeve or a batch head on the market is firstly sleeved on the sleeve square shaft 15a, the knob 206 is shifted to the rightmost end, at this time, the first arc rod 201 extends out of the left end of the cam seat 204, the second arc rod 202 retracts, the first arc rod 201 is linked with the first arc teeth 11a to form a counterclockwise retaining mechanism, and the second arc rod 202 is not linked with the second arc teeth 13a, so that the entire wrench can rotate clockwise to drive the sleeve on the sleeve square shaft 15a to tighten the nut, and the nut is not loosened when moving counterclockwise to play a role in tightening a workpiece by the retaining wrench.

In conclusion, the bidirectional retaining wrench is provided with the arc-surface gear set and the arc-surface telescopic rod, the first arc-surface tooth of the arc-surface gear set is opposite to the arc-surface direction of the first arc-surface rod or the second arc-surface tooth of the arc-surface gear set is opposite to the arc-surface direction of the second arc-surface rod, and the second telescopic spring is arranged on the right end of the cam adjusting mechanism of the arc-surface rod telescopic mechanism and the right end of the base sliding groove, so that the effect similar to a ratchet mechanism is achieved, and the retaining function is achieved; the rotating shaft is provided with first arc-surface teeth and second arc-surface teeth, the directions of the arc surfaces are opposite, and the cam mechanism of the arc-surface rod telescopic mechanism is provided with a first arc-surface rod and a second arc-surface rod and has an adjustable bidirectional retaining function; in addition, the first arc-shaped rod is in arc surface contact with the first arc-shaped teeth or the second arc-shaped rod is in arc surface contact with the second arc-shaped teeth, the movement process is tangential movement, friction is reduced, and the service life of the wrench is prolonged. Generally speaking, two-way stopping spanner has the stopping function similar to ratchet, can realize two-way stopping simultaneously through adjusting, and it is more convenient to use, and practical range is wider, and the frictional force that inside surging produced is littleer in the while use, improves the practical life of spanner.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A bidirectional retaining wrench comprises an arc-surface gear set (1) and an arc-surface rod telescopic mechanism (2), wherein the arc-surface gear set (1) comprises a base (10), a first arc-surface gear (11), an upper cover (12), a second arc-surface gear (13), a bearing (14) and a rotating shaft (15), a base cavity (10a) is formed in the left side of the base (10), the rotating shaft (15) is arranged in the middle of the base cavity (10a), the rotating shaft (15) is respectively connected with the lower side of the cavity part of the base (10) and an inner hole of the upper cover (12) through a pair of bearings (14), the upper cover (12) and the base (10) are fixed through screws, and the first arc-surface gear (11) and the second arc-surface gear (13) are arranged in the middle of the; the cambered surface rod telescopic mechanism (2) comprises a cam adjusting mechanism (20), the cambered surface rod telescopic mechanism (2) is arranged in a base sliding groove (10c) of the base (10), a second telescopic spring is arranged on the right end of the cam adjusting mechanism (20) and the right end face of the base sliding groove (10c), the cam adjusting mechanism (20) comprises a first cambered surface rod (201), a second cambered surface rod (202), a first compression spring (203), a cam seat (204), a cam shaft (205) and a sliding seat (207), a first cam (205a) and a second cam (205b) are arranged in the middle of the cam shaft (205), the first cambered surface rod (201) and the second cambered surface rod (202) are vertically arranged on the cam seat (204) and are in clearance fit, the right end faces of the first cambered surface rod (201) and the second cambered surface rod (202) are respectively contacted with the cam faces of the first cam (205a) and the second cam (205b), a first compression spring (203) is respectively arranged between the first cambered rod (201) and the cam seat (204) and between the second cambered rod (202) and the cam seat (204), the cam shaft (205) is in clearance fit with the cam seat (204) and the sliding seat (207), and the cam seat (204) is fixedly connected with the sliding seat (207).

2. The bi-directional retaining wrench of claim 1, wherein: the first cambered surface tooth (11a) and the second cambered surface tooth (13a) are of single-sided cambered surface structures and are opposite in direction, the first cambered surface rod (201) and the second cambered surface rod (202) are of single-sided cambered surface structures and are opposite in direction, during assembly, the direction of the cambered surface of the first cambered surface rod (201) is opposite to that of the cambered surface of the first cambered surface tooth (11a), and the direction of the cambered surface of the second cambered surface rod (202) is opposite to that of the cambered surface of the second cambered surface tooth (13 a).

3. The bi-directional retaining wrench of claim 1, wherein: the left side axis of the first cambered surface rod (201) is a square axis (201a), and the structure of the second cambered surface rod (202) is the same as that of the first cambered surface rod.

4. The bi-directional retaining wrench of claim 1, wherein: the first cam (205a) and the second cam (205b) are opposite in direction.

5. The bi-directional retaining wrench of claim 1, wherein: a first boss (10b) is arranged on the left side of the sliding groove (10c) of the base (10).

6. The bi-directional retaining wrench of claim 1, wherein: the upper side of the cam seat (204) is provided with an arc chute (204a), the angle of the arc chute (204a) is 180 degrees, the knob (206) is fixed with the cam shaft (205), and the knob boss (206a) of the knob (206) is just in size capable of being inserted into the arc chute (204 a).

7. The bi-directional retaining wrench of claim 1, wherein: the lower side of the rotating shaft (15) is provided with a sleeve square shaft (15a) matched with a common sleeve or a screwdriver bit.

8. The bi-directional retaining wrench of claim 1, wherein: still include second compression spring (21), slide (207) right side is equipped with slide boss (207a), second compression spring (21) cover is on slide boss (207 a).