CN216030473U

CN216030473U - Novel ratchet wheel telescopic screwdriver

Info

Publication number: CN216030473U
Application number: CN202121736507.5U
Authority: CN
Inventors: 苏为民; 潘娅超
Original assignee: Suzhou Digang Hardware Products Co ltd
Current assignee: Suzhou Digang Hardware Products Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-03-15
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a novel ratchet wheel telescopic screwdriver which comprises a pawl, a pawl reset spring, a telescopic rod assembly, a sliding locking sleeve, a stop ring, a first locking steel ball and an internal tooth type ratchet wheel, wherein the telescopic rod assembly comprises a screwdriver head sleeve, strong magnetic steel, a hexagonal sliding rod and a stop spring, the stop ring and the first locking steel ball are arranged in the sliding locking sleeve, and the locking sleeve reset spring is arranged on the inner surface of the sliding locking sleeve. The ratchet wheel has the advantages of small appearance volume, high product processing precision, crisp sound and overlarge torsion value when the ratchet wheel rotates when the product is used, the torsion value of the product can reach 52-55 N.m, and the ratchet wheel is simple in structure operation and convenient and fast to use; meanwhile, the product is positioned accurately, the use of a user is also convenient, and due to the ratchet structure and the fact that the working part can stretch out and draw back, the operation time of the user can be greatly saved, and the working efficiency is improved. In addition, the product is convenient to package and carry due to the small overall size of the product.

Description

Novel ratchet wheel telescopic screwdriver

Technical Field

The utility model relates to the technical field of hand tools, in particular to a novel ratchet wheel telescopic screwdriver.

Background

The existing ratchet screwdriver in the market at present is generally large in size, heavy in weight, small in torsion value of products, free of stretching and interchanging functions, poor in user experience feeling and incapable of improving user satisfaction better.

The existing screwdriver cannot conveniently adjust the head of the screw when in use, cannot change the length of the screwdriver according to the actual use range, and cannot save more labor, for example, the screwdriver disclosed by the application number 200710094025.X cannot adjust the screwdriver while saving more labor, and has the problems of narrow use range and the like.

Therefore, it is necessary to provide a new ratchet retractable screwdriver to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel ratchet wheel telescopic screwdriver, which solves the problems that the screwdriver is heavy and is not easy to carry, and cannot be telescopic and interchangeable.

In order to achieve the above purpose, the utility model provides the following technical scheme: a novel ratchet wheel telescopic screwdriver comprises a pawl, a pawl reset spring, a telescopic rod assembly, a sliding locking sleeve, a stop ring, a first locking steel ball and an inner tooth type ratchet wheel, wherein the telescopic rod assembly comprises a screwdriver head sleeve, strong magnetic steel, a hexagonal sliding rod and a stop spring, the stop ring and the first locking steel ball are arranged inside the sliding locking sleeve, the locking sleeve reset spring is arranged on the inner surface of the sliding locking sleeve, a second positioning steel ball is arranged on the side surface of the sliding locking sleeve, a conical end fastening screw is arranged at the joint of the sliding locking sleeve and the inner tooth type ratchet wheel, the pawl dial is connected to the side surface of the sliding locking sleeve, a dial positioning steel ball is arranged on the side surface of the pawl dial, the positioning steel ball reset spring is arranged on the surface of the dial positioning steel ball, a ratchet shaft is connected to the inner surface of the pawl dial, and a telescopic rod assembly ejection spring is arranged on the inner surface of the ratchet shaft, the tail end of the ejection spring of the telescopic rod component is connected with a handle, and the handle and the telescopic rod component jointly form a novel screwdriver structure.

Preferably, the number of the pawls is six, pawl return springs are arranged in the six pawls, the length of the six pawl return springs is one half of that of the pawls, and the six pawls are used for accurately distinguishing the rotating force of the screwdriver.

Preferably, the telescopic link subassembly comprises four parts, it is polygon recess to criticize first sleeve pipe left end, it is cylindrical cavity to criticize first sleeve pipe right-hand member, it is identical with strong magnetic steel diameter to criticize first sleeve pipe cylindrical cavity diameter, strong magnetic steel right-hand member and hexagonal slide bar fixed connection, hexagonal slide bar right-hand member and stopping spring fixed connection in making the telescopic link scalable to the handle when not using, stretch out the handle during the use.

Preferably, the first locking steel ball is a steel ball with the diameter of 2mm, the second positioning steel ball is a steel ball with the diameter of 1mm, the first locking steel ball and the second positioning steel ball are both arranged on the inner surface of the sliding locking sleeve, a cavity capable of being provided with a locking sleeve reset spring is arranged in the sliding locking sleeve, and the telescopic range is controlled by the two locking steel balls in the sliding locking sleeve.

Preferably, the internal tooth type ratchet wheel is a 48-tooth type ratchet wheel, the inner surface of the internal tooth type ratchet wheel is provided with a pawl, and a pawl return spring is arranged in the pawl, so that the internal tooth type ratchet wheel can be accurately divided into 48 rotation angles.

Preferably, the diameter of the positioning steel ball of the shifting plate is 2mm, the size of the positioning steel ball of the shifting plate is the same as that of the first locking steel ball, the positioning steel ball of the shifting plate is arranged in the positioning steel ball return spring, and the inner diameter of the positioning steel ball return spring is matched with the diameter of the positioning steel ball of the shifting plate, so that the positioning steel ball of the shifting plate is in sliding connection with the positioning steel ball return spring.

Preferably, the diameter of the pawl dial is the same as that of the sliding locking sleeve, the pawl dial is connected with the sliding locking sleeve through a taper end set screw, and the pawl dial is connected with the handle through a hexagonal sliding rod in a penetrating manner, so that the pawl dial and the internal tooth type gear rotate synchronously.

Preferably, the ratchet shaft is polygonal, the inner diameter of the ratchet shaft is matched with the diameter of the hexagonal sliding rod, a plurality of triangular grooves are uniformly formed in the surface of the ratchet shaft, and the ratchet shaft is fixedly arranged in the internal tooth type ratchet wheel, so that the ratchet shaft drives the pawl pull plate to rotate.

Preferably, the handle is funnel-shaped, the handle internal surface is provided with the identical cavity of hexagonal slide bar diameter, the bottom surface is connected with telescopic link subassembly ejection spring right-hand member in the cavity for the better gripping of handle ability and exert oneself.

In the technical scheme, the utility model provides the following technical effects and advantages:

1. the ratchet wheel has the advantages of small appearance volume, high product processing precision, crisp sound and overlarge torsion value when the ratchet wheel rotates in use, simple ratchet wheel structure operation and convenient use, and the torsion value of the product can reach 52-55 N.m; meanwhile, the product is positioned accurately, the use of a user is also convenient, and due to the ratchet structure and the fact that the working part can stretch out and draw back, the operation time of the user can be greatly saved, and the working efficiency is improved. In addition, the overall dimension of the product is small, so that the product is convenient to package and carry;

2. the force in the sleeve is divided into a plurality of combinations by using the six pawls and the return spring in a matched manner, and the accurate force is divided into regions when the sleeve is used and not used, so that high-efficiency acting force is provided for a user and labor is saved;

3. the labor-saving and accurate positioning functions of the screwdriver are realized through the ratchet transmission structure and the telescopic rod assembly structure, the time for accurately positioning the operation part of a workpiece can be shortened when the screwdriver is used, the working part can stretch out and draw back when the screwdriver is used, and the user operation time is greatly saved.

Drawings

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

FIG. 2 is a front view of the handle of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is a top view of the handle of the present invention;

FIG. 5 is a cross-sectional view taken at D-D of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic perspective view of the ratchet shaft of the present invention;

FIG. 7 is a schematic perspective view of the initial state of the batch head casing according to the present invention;

FIG. 8 is a schematic perspective view of the extended state of the batch head casing according to the present invention;

FIG. 9 is a schematic diagram of the internal structure of the batch head casing according to the present invention.

Description of reference numerals:

1. a pawl; 2. a pawl return spring; 3. a telescopic rod assembly; 301. a bit sleeve; 302. strong magnetic steel magnet; 303. a hexagonal slide bar; 304. a backstop spring; 4. sliding the locking sleeve; 5. a check ring; 6. a first locking steel ball; 7. a locking sleeve return spring; 8. a second positioning steel ball; 9. a conical end fastening screw; 10. an internal tooth ratchet wheel; 11. pulling a positioning steel ball; 12. positioning a steel ball return spring; 13. pulling a plate by a pawl; 14. a ratchet shaft; 15. the telescopic rod component ejects a spring; 16. a handle.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

The utility model provides a novel ratchet wheel telescopic screwdriver as shown in figures 1-8, which comprises a pawl 1, a pawl reset spring 2, a telescopic rod component 3, a sliding locking sleeve 4, a backstop ring 5, a first locking steel ball 6 and an internal tooth type ratchet wheel 10, wherein the telescopic rod component 3 comprises a screwdriver head sleeve 301, a strong magnetic steel 302, a hexagonal sliding rod 303 and a backstop spring 304, the inside of the sliding locking sleeve 4 is provided with the backstop ring 5 and the first locking steel ball 6, the inner surface of the sliding locking sleeve 4 is provided with the locking sleeve reset spring 7, the side surface of the sliding locking sleeve 4 is provided with a second positioning steel ball 8, the joint of the sliding locking sleeve 4 and the internal tooth type ratchet wheel 10 is provided with a cone end set screw 9, the side surface of the sliding locking sleeve 4 is connected with a pawl dial 13, the side surface of the pawl dial 13 is provided with a dial positioning steel ball 11, the surface of the dial positioning steel ball 11 is provided with a positioning steel ball reset spring 12, the inner surface of the pawl pulling plate 13 is connected with a ratchet shaft 14, the inner surface of the ratchet shaft 14 is provided with a telescopic rod component ejection spring 15, and the tail end of the telescopic rod component ejection spring 15 is connected with a handle 16.

Pawl 1 is provided with six, all be provided with pawl reset spring 2 in six pawls 1, pawl reset spring 2 is provided with six, six pawl reset spring 2 length are the half of pawl 1 length, telescopic link subassembly 3 comprises four parts, criticize first sleeve pipe 301 left end and be the polygon recess, criticize first sleeve pipe 301 right-hand member and be cylindrical cavity, criticize first sleeve pipe 301 cylindrical cavity diameter and strong magnetic steel 302 diameter identical, strong magnetic steel 302 right-hand member and hexagonal slide bar 303 fixed connection, hexagonal slide bar 303 right-hand member and stopping spring 304 fixed connection.

The first locking steel ball 6 is a steel ball with the diameter of 2mm, the second positioning steel ball 8 is a steel ball with the diameter of 1mm, the first locking steel ball 6 and the second positioning steel ball 8 are both arranged on the inner surface of the sliding locking sleeve 4, a cavity capable of being provided with a locking sleeve reset spring 7 is arranged in the sliding locking sleeve 4, the internal tooth type ratchet 10 is a 48-tooth ratchet, the pawl 1 is arranged on the inner surface of the internal tooth type ratchet 10, the pawl reset spring 2 is arranged in the pawl 1, the diameter of the dial positioning steel ball 11 is 2mm, the size of the dial positioning steel ball 11 is the same as that of the first locking steel ball 6, the dial positioning steel ball 11 is arranged in the positioning steel ball reset spring 12, the inner diameter of the positioning steel ball reset spring 12 is matched with the diameter of the dial positioning steel ball 11, the diameter of the pawl dial 13 is the same as that of the sliding locking sleeve 4, the pawl dial 13 is connected with the sliding locking sleeve 4 through a cone end set screw 9, and the pawl dial 13 is connected with a handle 16 through a hexagonal sliding rod 303.

The ratchet shaft 14 is polygonal, the inner diameter of the ratchet shaft 14 is matched with the diameter of the hexagonal sliding rod 303, a plurality of triangular grooves are uniformly formed in the surface of the ratchet shaft 14, the ratchet shaft 14 is fixedly arranged in the internal tooth type ratchet 10, the handle 16 is funnel-shaped, a cavity matched with the diameter of the hexagonal sliding rod 303 is formed in the inner surface of the handle 16, and the right end of a telescopic rod assembly ejection spring 15 is connected to the inner bottom surface of the cavity.

This practical theory of operation:

referring to the attached fig. 1-9 of the specification, when the device is used, firstly, when the pawl pulling plate 13 is slightly rotated (clockwise or anticlockwise) by hand, the pulling plate positioning steel ball 11 slides into the positioning groove of the pawl pulling plate 13 under the action of the positioning steel ball return spring 12, and a very slight in-place sound is heard at the same time, so that the rotation to the position is proved. In the working position, the pawl dial 13 presses three pawls 1 into the positioning grooves of the ratchet shaft 14, so that the telescopic rod component 3 can drive the inner tooth type ratchet 10 to rotate forwards or reversely (only three pawls are stressed at the same time in both cases). When the salient points of the rotating pawl dial 13 are aligned with the circular points on the handle 16, the six pawls 1 are ejected out under the action of the pawl return spring 2 and prop against the inner teeth of the inner tooth type ratchet wheel 10, and at the moment, the inner tooth type ratchet wheel 10 is in a locking state (can not rotate forwards or reversely), but a user can also use the inner tooth type ratchet wheel normally at the station;

referring to the attached drawings 1-9 of the specification, when the device is used, when acting force which is pulled to the device is exerted on the sliding locking sleeve 4 by a thumb and a forefinger, the first locking steel ball 6 pops out of a track under the action of axial force exerted by the telescopic rod component 3, the telescopic rod component 3 pops out under the action of the telescopic rod component ejection spring 15, a user presses the sliding locking sleeve 4, the extending length of the telescopic rod component 3 can be adjusted by hands according to needs, when the telescopic rod is in place, the thumb and the forefinger are loosened, the sliding locking sleeve 4 automatically resets under the action of the locking sleeve return spring 7, the first locking steel ball 6 is pressed into the track of the telescopic rod component 3, so that the telescopic rod component 3 is locked, and the product can be normally used by the user,

referring to the attached fig. 1-9 of the specification, when the device is used, in the process of using the product, a user can adjust the rotation direction of the ratchet wheel according to specific conditions so as to improve the working efficiency, and therefore the screw can be quickly screwed or loosened. When the product is used up, a user can use the sliding locking sleeve 4 with the same action force to press down the telescopic rod by applying the action force to the telescopic rod component 3, when the hexagonal sliding rod 303 is completely invisible and the sound of the steel ball in place is heard, the action force applied to the sliding locking sleeve 4 is released, and the sliding locking sleeve 4 is reset under the action of the elastic force of the locking sleeve reset spring 7. And simultaneously, a first locking steel ball 6 is pressed down to lock the telescopic rod component 3.

Claims

1. The utility model provides a novel scalable screwdriver of ratchet, includes pawl (1), pawl reset spring (2), telescopic link subassembly (3), slip lock sleeve (4), stopping ring (5), locking steel ball (6) and interior tooth-like ratchet (10), its characterized in that: the telescopic rod component (3) comprises a bit sleeve (301), strong magnetic steel (302), a hexagonal sliding rod (303) and a stopping spring (304), a stopping ring (5) and a locking steel ball (6) are arranged inside a sliding locking sleeve (4), a locking sleeve reset spring (7) is arranged on the inner surface of the sliding locking sleeve (4), a second positioning steel ball (8) is arranged on the side surface of the sliding locking sleeve (4), a conical end fastening screw (9) is arranged at the joint of the sliding locking sleeve (4) and an inner toothed ratchet (10), a pawl dial (13) is connected to the side surface of the sliding locking sleeve (4), a dial positioning steel ball (11) is arranged on the side surface of the pawl dial (13), a positioning steel ball reset spring (12) is arranged on the surface of the dial positioning steel ball (11), a ratchet shaft (14) is connected to the inner surface of the pawl dial (13), the inner surface of the ratchet shaft (14) is provided with a telescopic rod component ejection spring (15), and the tail end of the telescopic rod component ejection spring (15) is connected with a handle (16).

2. The novel ratchet retractable screwdriver as recited in claim 1, wherein: pawl (1) is provided with six, six all be provided with pawl reset spring (2) in pawl (1), pawl reset spring (2) are provided with six, six pawl reset spring (2) length is one-half of pawl (1) length.

3. The novel ratchet retractable screwdriver as recited in claim 1, wherein: telescopic rod subassembly (3) comprises four parts, it is polygon recess to criticize first sleeve pipe (301) left end, criticize first sleeve pipe (301) right-hand member and be cylindrical cavity, criticize first sleeve pipe (301) cylindrical cavity diameter and strong magnetic steel (302) diameter identical, strong magnetic steel (302) right-hand member and hexagonal slide bar (303) fixed connection, hexagonal slide bar (303) right-hand member and stopping spring (304) fixed connection.

4. The novel ratchet retractable screwdriver as recited in claim 1, wherein: no. one locking steel ball (6) is diameter 2 mm's steel ball, No. two location steel balls (8) are diameter 1 mm's steel ball, No. one locking steel ball (6) and No. two location steel balls (8) all set up at slip lock sleeve (4) internal surface, be provided with the cavity of mountable lock sleeve reset spring (7) in slip lock sleeve (4).

5. The novel ratchet retractable screwdriver as claimed in claim 2, wherein: the inner tooth type ratchet wheel (10) is a 48-tooth ratchet wheel, a pawl (1) is arranged on the inner surface of the inner tooth type ratchet wheel (10), and a pawl reset spring (2) is arranged in the pawl (1).

6. The novel ratchet retractable screwdriver according to claim 4, wherein: the diameter of the dial positioning steel ball (11) is 2mm, the size of the dial positioning steel ball (11) is the same as that of the first locking steel ball (6), the dial positioning steel ball (11) is arranged in a positioning steel ball reset spring (12), and the inner diameter of the positioning steel ball reset spring (12) is matched with the diameter of the dial positioning steel ball (11).

7. The novel ratchet retractable screwdriver as recited in claim 1, wherein: the diameter of the pawl pulling disc (13) is the same as that of the sliding locking sleeve (4), the pawl pulling disc (13) is connected with the sliding locking sleeve (4) through a taper end set screw (9), and the pawl pulling disc (13) is in through connection with the handle (16) through a hexagonal sliding rod (303).

8. The novel ratchet retractable screwdriver according to claim 5, wherein: the ratchet shaft (14) is polygonal, the inner diameter of the ratchet shaft (14) is matched with that of the hexagonal sliding rod (303), a plurality of triangular grooves are uniformly formed in the surface of the ratchet shaft (14), and the ratchet shaft (14) is fixedly arranged in the internal tooth type ratchet wheel (10).

9. The novel ratchet retractable screwdriver as recited in claim 1, wherein: the handle (16) is funnel-shaped, the internal surface of the handle (16) is provided with a cavity matched with the diameter of the hexagonal sliding rod (303), and the bottom surface in the cavity is connected with the right end of an ejection spring (15) of the telescopic rod assembly.