CN210704536U - Convenient and efficient torque-adjustable telescopic screwdriver - Google Patents

Abstract

The utility model discloses a convenient and efficient adjustable torque telescopic screwdriver, which belongs to the field of screwdrivers and comprises an inner cutter bar, an adjusting ring, a shell, an adjusting rod, a handle, a compression spring, a lower ratchet wheel and an upper ratchet wheel, wherein one end of the handle, which is far away from the shell, is fixedly connected with a handle ring, the inner part of the handle ring is fixedly connected with an inner gear, the outer end of the inner cutter bar is fixedly connected with an outer gear, the outer gear is positioned on the right side of the upper ratchet wheel, the outer gear is positioned on the inner side of the inner gear, the outer gear is meshed with the inner gear, the right end of the inner cutter bar is fixedly connected with a rotating block, the right inner wall of the handle ring is provided with a rotating groove, the rotating block is rotatably connected inside the rotating groove, the inner cutter bar has a rotating speed larger than that of the handle ring through the matching of the inner gear and the outer gear, therefore, compared with the prior art, the utility model discloses higher work efficiency has.

Description

Convenient and efficient torque-adjustable telescopic screwdriver

Technical Field

The utility model relates to a screwdriver field, more specifically say, relate to a flexible screwdriver of adjustable moment of torsion of convenient efficient.

Background

A screwdriver is a common screw tightening tool, and there are various kinds of screwdrivers. The screwdriver is used for installation and maintenance, and can be used in places with screws. When a traditional screwdriver is used for fastening a screw, the applied torque and the tightness degree are controlled by the feeling of a person, the screw is slippery or the screwdriver is damaged due to overlarge applied torque, or the installation or assembly quality of parts is affected due to different applied torques, or a relatively narrow space is met, so that an arm cannot extend into the space, and the length of the screwdriver is insufficient. Therefore, in order to solve the above problems, torque screwdrivers, retractable screwdrivers, and the like are produced in the market.

The torque screwdriver: the torque force value can be preset, when the torque force applied from the outside reaches the set torque force value, the internal gear shifting mechanism acts, and the clicking sound can be heard to indicate that the preset value is reached, so that the action can be stopped, the tightness degree of each screw is consistent by using the torque screwdriver, and the screw is not easy to slip or the screwdriver is not easy to damage; the telescopic screwdriver is a screwdriver with the length of the screwdriver rod adjustable, the length of the screwdriver rod can be changed according to the use environment, the telescopic screwdriver is convenient to use, and can be conveniently stored after being contracted when not in use, so that the screwdriver rod is protected.

When an existing screwdriver is used for fastening a screw, the screwdriver rod is driven to rotate by manually and repeatedly rotating the screwdriver handle, but the rotating speeds of the screwdriver handle and the screwdriver rod are generally the same, so that the screwdriver is low in working efficiency and long in operation time when used, and therefore a screwdriver with higher efficiency is needed to improve the working efficiency.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a flexible screwdriver of adjustable moment of torsion of convenient efficient, it passes through the cooperation of internal gear and external gear, and the cutter arbor has the rotational speed bigger than the handle ring in making, and manual rotates the handle ring round, and the number of revolutions of interior cutter arbor is two times of handle ring or more, consequently, compares with prior art, the utility model discloses higher work efficiency has.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a flexible screwdriver of adjustable moment of torsion of convenient efficient, includes interior cutter arbor, adjustable ring, shell, regulation pole, handle, compression spring, lower ratchet, goes up the ratchet, interior cutter arbor passes adjustable ring, regulation pole and lower ratchet and last ratchet fixed connection in proper order, lower ratchet and last ratchet phase-match, compression spring is located between regulation pole and the lower ratchet, shell and handle threaded connection, adjustable ring and regulation pole threaded connection, the one end fixedly connected with handle ring of shell is kept away from to the handle, the inside fixedly connected with internal gear of handle ring, the outer end fixedly connected with external gear of interior cutter arbor, the external gear is located the right side of ratchet, the external gear is located the inboard of internal gear, and the external gear meshes with the internal gear and is connected, the right-hand member fixedly connected with rotor of interior cutter arbor, the right inner wall chisel of handle ring has the rotary groove, the rotor rotates to be connected inside the rotary groove, the utility model discloses an inner gear and the cooperation of external gear make interior cutter arbor have more rotational speed than the handle ring, and manual rotates the handle ring round, and the number of revolutions of interior cutter arbor is two times or more of handle ring, consequently, compares with prior art, the utility model discloses higher work efficiency has.

Furthermore, an inner groove is formed in the left end of the inner cutter bar, an outer cutter bar is connected to the inner portion of the inner groove in a sliding mode, a bolt is connected among the outer cutter bar, the inner cutter bar and the adjusting ring, the telescopic function of the outer cutter bar can be achieved through the inner cutter bar, the adjusting ring and the bolt, and the extension length of the outer cutter bar is adjusted according to the using condition.

Further, the locked groove that has a plurality of evenly distributed is opened chisel to the outer end of outer cutter arbor, all open threaded hole on interior cutter arbor and the adjustable ring, bolt threaded connection is in locked groove and a pair of threaded hole, fixes interior cutter arbor, adjustable ring and outer cutter arbor three through the bolt.

Furthermore, the left end of the outer cutter bar is sleeved with a rubber sleeve, and the head of the outer cutter bar can be protected through the rubber sleeve.

Further, the inner circle diameter of internal gear is 2-2.5 times of external gear outer lane diameter, and this multiple is relevant with the rotational speed ratio between interior cutter arbor and the handle ring, and this multiple is big more, and the rotational speed ratio of interior cutter arbor and handle ring is big more, then the utility model discloses an availability factor is higher.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) this scheme passes through the cooperation of internal gear and external gear, makes interior cutter arbor have the rotational speed that is bigger than the handle ring, and manual rotates the handle ring round, and the number of revolutions of interior cutter arbor is two times or more of handle ring, consequently, compares with prior art, the utility model discloses higher work efficiency has.

(2) The left end of interior cutter arbor is cut there is the inside groove, and the inside sliding connection of inside groove has outer cutter arbor, is connected with the bolt between outer cutter arbor, interior cutter arbor and the adjustable ring, can realize the flexible function of outer cutter arbor through interior cutter arbor, adjustable ring and bolt, adjusts the extension length of outer cutter arbor according to the in service behavior.

(3) The outer end of outer cutter arbor is cut and is dug the locked groove that has a plurality of evenly distributed, all cuts threaded hole on interior cutter arbor and the adjustable ring, and bolt threaded connection is in locked groove and a pair of threaded hole, fixes interior cutter arbor, adjustable ring and outer cutter arbor three through the bolt.

(4) The left end of the outer cutter rod is sleeved with a rubber sleeve, and the head of the outer cutter rod can be protected through the rubber sleeve.

(5) The inner circle diameter of internal gear is 2-2.5 times of external gear outer lane diameter, and this multiple is relevant with the speed ratio between interior cutter arbor and the handle ring, and this multiple is big more, and the speed ratio of interior cutter arbor and handle ring is big more, then the utility model discloses an availability factor is higher.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic front structural view of the internal gear and the external gear of the present invention.

The reference numbers in the figures illustrate:

1 inner cutter bar, 2 adjusting ring, 3 outer shell, 4 adjusting rod, 5 handle, 6 compression spring, 7 lower ratchet wheel, 8 upper ratchet wheel, 9 handle ring, 10 inner gear, 11 outer gear, 12 rotating block, 13 rotating groove, 14 outer cutter bar, 15 locking groove, 16 rubber sleeve, 17 bolt and 18 inner groove.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1 and 2, a convenient and efficient torque-adjustable telescopic screwdriver comprises an inner screwdriver rod 1, an adjusting ring 2, a shell 3, an adjusting rod 4, a handle 5, a compression spring 6, a lower ratchet wheel 7 and an upper ratchet wheel 8, wherein the inner screwdriver rod 1 sequentially penetrates through the adjusting ring 2, the adjusting rod 4 and the lower ratchet wheel 7 to be fixedly connected with the upper ratchet wheel 8, the lower ratchet wheel 7 is matched with the upper ratchet wheel 8, the compression spring 6 is positioned between the adjusting rod 4 and the lower ratchet wheel 7, the shell 3 is in threaded connection with the handle 5, the adjusting ring 2 is in threaded connection with the adjusting rod 4, when a fastening screw clockwise applies torque to the handle 5, the pressure and the friction force of the lower ratchet wheel 7 and the upper ratchet wheel 8 can be adjusted through the compression spring 6, the adjusting ring 2 and the adjusting rod 4 according to the torque required by the screw to be fastened, and the lower ratchet wheel 7 generates thrust to the, the moment of torsion mainly comes from this thrust and the frictional force of lower ratchet 7 and upper ratchet 8, and the size of these two power all is relevant with the compression volume of compression spring 6, therefore, the size of moment of torsion accessible compression spring 6 adjusts, and when the moment of torsion of exerting surpassed the value of settlement, lower ratchet 7 and upper ratchet 8 automatic slipping sent the rattle, and this technique is prior art, the utility model discloses do not relate to the improvement to this technique.

Referring to fig. 2, a handle ring 9 is fixedly connected to one end of the handle 5 away from the housing 3, an internal gear 10 is fixedly connected to the inside of the handle ring 9, an external gear 11 is fixedly connected to the outer end of the internal cutter bar 1, the external gear 11 is located on the right side of the upper ratchet 8, referring to fig. 4, the external gear 11 is located on the inner side of the internal gear 10, the external gear 11 is meshed with the internal gear 10, a rotary block 12 is fixedly connected to the right end of the internal cutter bar 1, a rotary groove 13 is formed in the right inner wall of the handle ring 9, the rotary block 12 is rotatably connected to the inside of the rotary groove 13, and the internal cutter bar 1 can stably rotate through the rotary block 12 and the rotary groove 13, so that.

Referring to fig. 2, an inner groove 18 is drilled at the left end of the inner cutter bar 1, an outer cutter bar 14 is slidably connected inside the inner groove 18, two end portions of the outer cutter bar 14 can be set to be cutter heads with different shapes (such as a straight shape, a cross shape, and the like), a rubber sleeve 16 is sleeved at the left end of the outer cutter bar 14, the rubber sleeve 16 is used for protecting the head portion of the outer cutter bar 14, a bolt 17 is connected between the outer cutter bar 14, the inner cutter bar 1 and the adjusting ring 2, a plurality of locking grooves 15 are drilled at the outer end of the outer cutter bar 14, threaded holes are drilled in the inner cutter bar 1 and the adjusting ring 2, the bolt 17 is in threaded connection with the locking groove 15 and a pair of threaded holes, the inner cutter bar 1, the adjusting ring 2 and the outer cutter bar 14 are fixed by the bolt 17, the outer cutter bar 14, the extension and retraction functions of the outer cutter bar 14 can be realized by the inner.

The utility model discloses an internal gear 10 and external gear 11's cooperation makes interior cutter arbor 1 have the rotational speed that is bigger than handle ring 9, and the inner circle diameter of internal gear 10 is 2-2.5 times of external gear 11 outer lane diameter, and this multiple is related with the rotational speed ratio between interior cutter arbor 1 and the handle ring 9, and this multiple is big more, and interior cutter arbor 1 and handle ring 9's rotational speed ratio is big more, then the utility model discloses an availability factor is higher, and is manual to rotate handle ring 9 round, and interior cutter arbor 1's number of revolutions is two times or more of handle ring 9, consequently, compares with prior art, the utility model discloses has higher work efficiency.

When the screwdriver is used, the handle ring 9 is manually rotated, the inner cutter bar 1 is driven to rotate through the matching of the inner gear 10 and the outer gear 11, the inner cutter bar 1 drives the outer cutter bar 14 to rotate, and the fastening of a screw is realized; because the diameter circle of the inner ring of the inner gear 10 is larger than the diameter of the outer ring of the outer gear 11, the rotating speed of the inner cutter bar 1 is far larger than that of the handle ring 9 through the transmission action of the inner gear 10 and the outer gear 11, the utility model has the characteristic of high efficiency; the outer cutter bar 14 moves in the inner groove 18 on the inner cutter bar 1, so that the extension length of the outer cutter bar 14 can be adjusted, and then the outer cutter bar is fixed through the bolt 17, and the use is convenient for a user.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (5)

1. The utility model provides a flexible screwdriver of adjustable moment of torsion of convenient efficient, includes interior cutter arbor (1), adjustable ring (2), shell (3), adjusts pole (4), handle (5), compression spring (6), ratchet (7) down, go up ratchet (8), interior cutter arbor (1) passes adjustable ring (2), adjusts pole (4) and lower ratchet (7) and last ratchet (8) fixed connection in proper order, ratchet (7) and last ratchet (8) phase-match down, compression spring (6) are located and adjust between pole (4) and lower ratchet (7), shell (3) and handle (5) threaded connection, adjustable ring (2) and regulation pole (4) threaded connection, its characterized in that: handle (5) keep away from one end fixedly connected with handle ring (9) of shell (3), the inside fixedly connected with internal gear (10) of handle ring (9), the outer end fixedly connected with external gear (11) of interior cutter arbor (1), external gear (11) are located the right side of last ratchet (8), external gear (11) are located the inboard of internal gear (10), and external gear (11) are connected with internal gear (10) meshing, the right-hand member fixedly connected with commentaries on classics piece (12) of interior cutter arbor (1), the right inner wall of handle ring (9) is cut there is rotor groove (13), rotor block (12) rotate to be connected in inside rotor groove (13).

2. The convenient and efficient adjustable torque telescopic screwdriver as claimed in claim 1, wherein: an inner groove (18) is formed in the left end of the inner cutter bar (1), an outer cutter bar (14) is connected to the inner portion of the inner groove (18) in a sliding mode, and a bolt (17) is connected among the outer cutter bar (14), the inner cutter bar (1) and the adjusting ring (2).

3. The convenient and efficient adjustable torque telescopic screwdriver according to claim 2, characterized in that: the outer end of outer cutter arbor (14) is opened chisel and is had a plurality of evenly distributed's locked groove (15), all dig threaded hole on interior cutter arbor (1) and adjustable ring (2), bolt (17) threaded connection is in locked groove (15) and a pair of screw hole.

4. The convenient and efficient adjustable torque telescopic screwdriver according to claim 2, characterized in that: the left end of the outer cutter bar (14) is sleeved with a rubber sleeve (16).

5. The convenient and efficient adjustable torque telescopic screwdriver as claimed in claim 1, wherein: the diameter of the inner ring of the inner gear (10) is 2-2.5 times of the diameter of the outer ring of the outer gear (11).

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