CN210678512U

CN210678512U - High-efficient speed-multiplying screwdriver

Info

Publication number: CN210678512U
Application number: CN201920724971.9U
Authority: CN
Inventors: 张玉林
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-06-05
Anticipated expiration: 2029-05-20

Abstract

The utility model discloses a high-efficient speed-multiplying screwdriver, a serial communication port, including the handle, the one end of handle is connected with the one end of the outside commentaries on classics tooth that can rotate, the other end and the lower end cap of outside commentaries on classics tooth are connected, be equipped with the big through-hole of second on the lower end cap, be equipped with the gear cutter arbor in the outside commentaries on classics tooth, the one end of gear cutter arbor is located in the one end of handle, the other end that is used for installing screwdriver bit on the gear cutter arbor passes the big through-hole of second on the lower end cap, be equipped with the pinion on the gear cutter arbor, be equipped with round bull tooth; the number of small teeth on the pinion is less than the number of large teeth. The utility model discloses a screwdriver separately sets up handle and cutter arbor to increased the gear of different diameters between the two, make the handle change the round, the cutter arbor can rotate more than the round, labour saving and time saving.

Description

High-efficient speed-multiplying screwdriver

Technical Field

The utility model relates to a high-efficient doubly fast screwdriver for twist the hand tool that changes the screw and screw up or relax belongs to mechanical tool technical field.

Background

The current manual screwdriver has a cutter bar and a handle fixed into a whole, and the rotating angular speed ratio is 1: 1; that is, the handle rotates one revolution and the blade bar rotates one revolution. When the handle and the cutter bar are fixed into a whole during manufacturing, the ratio of the angular speeds of the rotation of the cutter bar and the handle cannot be larger than one. Therefore, when the screw is rotated, time and labor are not saved.

If the electric screwdriver is used, the rotation of the screwdriver rod cannot be controlled at will, the small screw is easy to be damaged when being screwed, and the electric screwdriver is large in size and heavy in weight and cannot be carried about.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the problem of how to make manual screwdriver twist labour saving and time saving is solved.

In order to solve the technical problem, the technical scheme of the utility model provides a high-efficient speed-multiplying screwdriver, which is characterized in that, the screwdriver comprises a handle, one end of the handle is connected with one end of a rotatable external rotating tooth, the other end of the external rotating tooth is connected with a lower end cover, a second big through hole is arranged on the lower end cover, a gear cutter bar is arranged in the external rotating tooth, one end of the gear cutter bar is arranged in one end of the handle, the other end of the gear cutter bar, which is used for installing a screwdriver bit, passes through the second big through hole on the lower end cover, a pinion is arranged on the gear cutter bar, a circle of big teeth are arranged on the inner wall of the external rotating tooth, and; the number of small teeth on the pinion is less than the number of large teeth.

Preferably, one end of the handle is in rolling connection with one end of the external rotating tooth through a middle steel ball.

Preferably, the outside of handle one end on be equipped with first marble mounting groove, in first marble mounting groove was located to the middle part steel ball, the outside was changeed the one end cover of tooth and is in the outside of handle one end.

Preferably, the outside commentaries on classics tooth in be equipped with the gear seat, be equipped with the recess on the edge of gear seat, the biggest internal diameter of recess and the biggest external diameter phase-match of pinion are equipped with the first big through-hole that can supply the gear cutter arbor other end to pass on the gear seat.

Preferably, the smallest distance between the first large through hole and the edge of the gear seat is smaller than the diameter of the root circle of the pinion.

Preferably, the other end of the external rotating tooth is in rolling connection with the gear seat through a lower steel ball.

Preferably, the inner wall of the other end of the external rotating tooth is provided with a second marble mounting groove, a steel ball at the lower part is arranged in the second marble mounting groove, and the other end of the external rotating tooth is sleeved on the gear seat.

Preferably, the gear seat is provided with a first small through hole, the end cover is provided with a second small through hole, one end of the handle is provided with a fixing hole, and the first small through hole, the second small through hole and the fixing hole are equal in number and are at least 2; the gear seat, the end cover and the handle are fixedly connected through fixing screws, and one ends of the fixing screws sequentially penetrate through the second small through holes, the first small through holes and the fixing holes.

Preferably, the external rotating teeth are of a cylindrical structure with two ends penetrating through; the outer part of the outer rotating tooth is provided with a rough part convenient for rotation.

Preferably, one end of the handle is provided with a limit groove, and one end of the gear cutter bar is arranged in the limit groove and can rotate in the limit groove.

The screwdriver of the utility model arranges the handle and the screwdriver rod separately, and the gears with different diameters are added between the handle and the screwdriver rod, so that the handle rotates for a circle, the screwdriver rod can rotate for more than one circle, and time and labor are saved; because the structure is simple, the volume is small, and the small screw can be screwed; the portable aerial work platform is convenient to carry and can be used for aerial work; the control can be carried out when screwing, and the problem that the screw is damaged due to transitional rotation is solved. The utility model discloses a screwdriver is one-hand operation, can liberate the other hand and carry out other operations, and can also normal operating use in the awkward position that some space is little and both hands can not reach simultaneously through one-hand operation.

Drawings

FIG. 1 is a schematic view of a high-efficiency speed-multiplying screwdriver in a disassembled structure;

FIG. 2 is a cross-sectional view of a high-efficiency multiple speed screwdriver;

FIG. 3 is a schematic view of the handle;

FIG. 4 is a front view of the handle;

FIG. 5 is a bottom view of the handle;

FIG. 6 is a schematic view of the outer rotor;

FIG. 7 is a schematic structural view of a gear seat;

FIG. 8 is a schematic view of the structure of the gear holder;

fig. 9 is a schematic structural view of the lower end cap.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Example 1

The utility model relates to a high-efficient doubly fast screwdriver, as shown in fig. 1-fig. 9, it includes handle 1, the one end of handle 1 is connected with the outside one end of changeing tooth 3 that can rotate, the outside other end of changeing tooth 3 is connected with lower end cover 7, be equipped with the big through-hole of second 71 on the lower end cover 7, be equipped with gear cutter arbor 6 in the outside commentaries on classics tooth 3, gear cutter arbor 6's one end is located in the one end of handle 1, the other end that is used for installing screwdriver bit on the gear cutter arbor 6 passes the big through-hole of second 71 on the lower end cover 7, be equipped with pinion 61 on the gear cutter arbor 6, be equipped with round dogtooth 32 on the inner wall of outside commentaries on classics tooth 3, pinion 61 is connected with dogtooth 32 meshing. One end of the handle 1 is connected with one end of the external rotating tooth 3 in a rolling way through a middle steel ball 2. Be equipped with first marble mounting groove 13 on the outside of 1 one end of handle, in first marble mounting groove 13 was located to middle part steel ball 2, the outside was changeed the one end cover of tooth 3 and is in the outside of 1 one end of handle. The external rotary gear 3 is internally provided with a gear seat 4, the edge of the gear seat 4 is provided with a groove 41, the maximum inner diameter of the groove 41 is matched with the maximum outer diameter of the pinion 61, and the gear seat 4 is provided with a first large through hole 43 through which the other end of the gear cutter bar 6 can pass. The minimum distance between the first large through hole and the edge of the gear holder 4 is smaller than the root circle diameter of the pinion 61. The other end of the external rotating gear 3 is in rolling connection with the gear seat 4 through a lower steel ball 5. The inner wall of the other end of the external rotating tooth 3 is provided with a second marble mounting groove 31, the lower steel ball 5 is arranged in the second marble mounting groove 31, and the other end of the external rotating tooth 3 is sleeved on the gear seat 4. A first small through hole 42 is formed in the gear seat 4, a second small through hole 72 is formed in the end cover 7, a fixing hole 14 is formed in one end of the handle 1, and the number of the first small through holes 42, the number of the second small through holes 72 and the number of the fixing holes 14 are at least 2; the gear seat 4, the end cover 7 and the handle 1 are fixedly connected through a fixing screw 8, and one end of the fixing screw 8 sequentially penetrates through the second small through hole 72, the first small through hole 42 and the fixing hole 14 to be fixedly connected. The external rotating teeth 3 are of a cylindrical structure with two ends penetrating through; the outer part of the outer rotor 3 is provided with a rough portion 33 for facilitating rotation. One end of the handle 1 is provided with a limit groove 15, and one end of the gear cutter bar 6 is arranged in the limit groove 15 and can rotate in the limit groove 15.

The handle 1 comprises a holding upper part 11 and a holding lower part 12, a fixing hole 14 and a limiting groove 15 are arranged on the end surface of the holding lower part 12, a first marble mounting groove 13 is arranged on the circumference of the lower end of the holding lower part 12, and the lower end of the holding lower part 12 is connected with the external rotating teeth 3. The included angle between the upper holding part 11 and the lower holding part 12 is 10-30 degrees, is suitable for human mechanics, and is comfortable and convenient to hold.

The types of the tool bit comprise a cross shape, a straight shape, a star shape and an inner hexagon.

In this embodiment, the number of the first small through holes 42, the second small through holes 72 and the fixing holes 14 is the same, and is 3, so that 3 fixing screws 8 need to be arranged and mounted.

When the utility model is installed, the lower steel ball 5 is firstly installed in the second marble installation groove 31 of the external rotating tooth 3, the other end of the gear cutter bar 6 passes through the first big through hole 43 of the gear seat 4, so that the pinion 61 on the gear cutter bar 6 is located in the recess 41 of the gear seat 4, and then the entire gear seat 4 is placed in the outer toothing 3, a middle steel ball 2 is arranged in a first marble mounting groove 13 of the handle 1, the whole external rotating tooth 3 is sleeved on one end of the handle 1 to cover the middle steel ball 2, one end of a gear cutter bar 6 is arranged in a limiting groove 15, and finally, a lower end cover 7 is arranged on the other end of the external rotating tooth 3, so that the other end of the gear cutter bar 6 passes through a second big through hole 71 of the lower end cover 7, the 3 fixing screws 8 sequentially penetrate through the second small through hole 72 on the lower end cover 7 and the first small through hole 42 on the gear seat 4 to be fixedly connected with the fixing hole 14 on the handle 1.

The utility model discloses when using, install the tool bit in gear cutter arbor 6's outer end (stretch out outside one end of commentaries on classics tooth 3 promptly), hold handle 1, little finger, ring finger and palm hold handle 1's upper portion 11 that grips, the middle finger holds handle 1's lower part 12 that grips, handle 1 is motionless promptly, forefinger and thumb rotate outside commentaries on classics tooth 3, make gear cutter arbor 6's angular velocity be outside commentaries on classics tooth 3's angular velocity N doubly (N > 1). Namely, the external rotary gear 3 rotates for one circle, and the gear cutter bar 6 drives the cutter head to rotate for more than one circle.

Example 2

In this embodiment, the number of the first small through holes 42, the second small through holes 72 and the fixing holes 14 is the same, and is 2, so that 2 fixing screws 8 need to be arranged and mounted.

The rest is the same as in example 1.

Claims

1. The efficient speed-multiplying screwdriver is characterized by comprising a handle (1), one end of the handle (1) is connected with one end of an external rotating tooth (3) which can rotate, the other end of the external rotating tooth (3) is connected with a lower end cover (7), a second large through hole (71) is formed in the lower end cover (7), a gear cutter bar (6) is arranged in the external rotating tooth (3), one end of the gear cutter bar (6) is arranged in one end of the handle (1), the other end, used for mounting a screwdriver bit, of the gear cutter bar (6) penetrates through the second large through hole (71) in the lower end cover (7), a pinion (61) is arranged on the gear cutter bar (6), a circle of large teeth (32) are arranged on the inner wall of the external rotating tooth (3), and the pinion (61) is meshed with the large teeth (32); the number of small teeth on the pinion (61) is smaller than the number of large teeth (32).

2. A high-efficiency speed-multiplying screwdriver as claimed in claim 1, wherein one end of the handle (1) is connected with one end of the external rotating tooth (3) in a rolling manner through a middle steel ball (2).

3. The high-efficiency speed-multiplying screwdriver as claimed in claim 2, wherein a first marble mounting groove (13) is formed in the outer side of one end of the handle (1), the middle steel ball (2) is arranged in the first marble mounting groove (13), and one end of the external rotating tooth (3) is sleeved on the outer side of one end of the handle (1).

4. A high-efficiency speed-multiplying screwdriver as claimed in claim 1, wherein a gear seat (4) is arranged in the external rotating gear (3), a groove (41) is arranged on the edge of the gear seat (4), the maximum inner diameter of the groove (41) is matched with the maximum outer diameter of the pinion (61), and a first large through hole (43) through which the other end of the gear cutter rod (6) can pass is arranged on the gear seat (4).

5. A high efficiency multiple speed screwdriver according to claim 4 wherein the minimum distance between said first large through hole and the edge of the gear seat (4) is less than the root diameter of the pinion (61).

6. A high-efficiency speed-multiplying screwdriver as claimed in claim 4, characterized in that the other end of the external rotating tooth (3) is connected with the gear seat (4) in a rolling manner through a lower steel ball (5).

7. The high-efficiency speed-multiplying screwdriver as claimed in claim 6, wherein a second marble mounting groove (31) is formed in the inner wall of the other end of the external rotating tooth (3), the lower steel ball (5) is arranged in the second marble mounting groove (31), and the other end of the external rotating tooth (3) is sleeved on the gear seat (4).

8. The high-efficiency speed-multiplying screwdriver according to claim 4, wherein a first small through hole (42) is formed in the gear seat (4), a second small through hole (72) is formed in the end cover (7), a fixing hole (14) is formed in one end of the handle (1), and the number of the first small through holes (42), the number of the second small through holes (72) and the number of the fixing holes (14) are at least 2; the gear seat (4), the end cover (7) and the handle (1) are fixedly connected through a fixing screw (8), and one end of the fixing screw (8) sequentially penetrates through the second small through hole (72), the first small through hole (42) and the fixing hole (14) to be fixedly connected.

9. A high-efficiency speed-multiplying screwdriver as claimed in claim 1, wherein the external rotating teeth (3) are of a cylindrical structure with two ends penetrating; the outer part of the outer rotating tooth (3) is provided with a rough part (33) which is convenient to rotate.

10. A high-efficiency speed-multiplying screwdriver as claimed in claim 1, wherein one end of the handle (1) is provided with a limiting groove (15), and one end of the gear cutter bar (6) is arranged in the limiting groove (15) and can rotate in the limiting groove (15).