阅读说明：本技术 一种省力反向旋转螺丝刀 (Labor-saving reverse-rotation screwdriver ) 是由 贺雪梅 于天毅 于 2020-08-14 设计创作，主要内容包括：一种省力反向旋转螺丝刀,包括有螺丝批、手柄,手柄由手柄前半段和手柄后半段组成；手柄前半段壳体内腔壁上设有齿圈；齿圈通过三组行星轮与设在轴上的太阳轮啮合连接；轴设在柄前半段底板的几何中心；轴的前端与螺丝批固定连接；本发明的工作原理是在正常情况下卡扣锁止手柄两部分,使用方法与普通螺丝刀无异,螺丝批与手柄同向、同比例旋转。在需要时,打开卡扣,解除手柄前半部分和后半部分的锁止状态,在行星齿轮的工作下,螺丝批与手柄反向旋转,螺丝批旋转圈数小于手柄后半部分,具有反向旋转、省力的特点。(A labor-saving reverse rotation screwdriver comprises a screwdriver and a handle, wherein the handle consists of a front half section of the handle and a rear half section of the handle; a gear ring is arranged on the inner cavity wall of the front half section of the handle; the gear ring is meshed and connected with a sun gear arranged on the shaft through three groups of planet gears; the shaft is arranged at the geometric center of the bottom plate at the front half section of the handle; the front end of the shaft is fixedly connected with the screwdriver; the working principle of the invention is that the two parts of the handle are locked by the buckle under normal conditions, the use method is the same as that of a common screwdriver, and the screwdriver and the handle rotate in the same direction and in the same proportion. When needed, the fastener is opened, the locking state of the front half part and the rear half part of the handle is released, the screwdriver and the handle rotate in the reverse direction under the work of the planetary gear, the number of the rotation turns of the screwdriver is smaller than that of the rear half part of the handle, and the screwdriver has the characteristics of reverse rotation and labor saving.)

1. A labor-saving reverse rotation screwdriver comprises a screwdriver (1) and a handle, and is characterized in that the handle consists of a front half handle section (2) and a rear half handle section (3); a gear ring (8) is arranged on the inner cavity wall of the shell of the front half section (2) of the handle; the gear ring is meshed and connected with a sun gear arranged on the shaft (5) through three groups of planet gears (7); the shaft (5) is arranged at the geometric center of the bottom plate of the front half section (2) of the handle; the front end of the shaft (5) is fixedly connected with the screwdriver (1).

2. The labor-saving reverse rotation screwdriver according to claim 1, wherein the front half handle section (2) and the rear half handle section (3) are connected through a buckle (4).

3. The labor-saving reverse rotation screwdriver according to claim 1, wherein the planet wheel (7) is arranged on the fixed shaft through a bearing (9).

Technical Field

The invention relates to the technical field of hardware tools, in particular to a labor-saving reverse-rotation screwdriver.

Background

The existing screwdriver consists of a handle and a screwdriver, and the working principle of the existing screwdriver is that the working principle of a wheel shaft is utilized. The larger the wheel, the more labor-saving the screwdriver is, so that the screwdriver with the thick handle is more labor-saving than the screwdriver with the thin handle for screwing the screw, and has the defects that the screwdriver can only rotate in the same direction, the adaptability is poor, and the labor can be saved only by increasing the diameter of the handle.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the labor-saving reverse rotation screwdriver which has the characteristics of labor saving, convenience, strong adaptability and better use than that of a common screwdriver under specific conditions by changing the rotation proportion, labor saving and the rotation direction of a screwdriver and a handle.

In order to achieve the purpose, the invention adopts the technical scheme that:

a labor-saving reverse rotation screwdriver comprises a screwdriver and a handle, wherein the handle consists of a front half section of the handle and a rear half section of the handle; a gear ring is arranged on the inner cavity wall of the front half section of the handle; the gear ring is meshed and connected with a sun gear arranged on the shaft through three groups of planet gears; the shaft is arranged at the geometric center of the bottom plate at the front half section of the handle; the front end of the shaft 5 is fixedly connected with the screwdriver.

The front half section of the handle is connected with the rear half section of the handle through a buckle. The buckle is arranged on the shell of the front half section of the handle.

The planet wheel is arranged on the fixed shaft through a bearing.

The invention has the beneficial effects that:

the screwdriver is fixed with the gear ring of the planetary gear transmission module, the planetary gear and the gear ring are fixed on the front half part of the handle, the planetary gear is connected to the front half part of the handle through a bearing, the sun gear is fixed on the rear half part of the handle, and the two parts of the handle are connected through a shaft.

The invention adopts the planetary gear transmission module, so the invention has the characteristics of labor saving, convenience, strong adaptability, better use than the common screwdriver under specific conditions, and the screwdriver has the opposite rotation direction to the hand.

Drawings

Fig. 1 is a schematic view of the external structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the screwdriver of the present invention.

Detailed Description

The structural and operational principles of the present invention are explained in further detail below with reference to the accompanying drawings.

Referring to fig. 1-2, a labor-saving reverse rotation screwdriver comprises a screwdriver 1 and a handle, and is characterized in that the handle consists of a front half-section 2 and a rear half-section 3; the inner cavity wall of the shell of the front half section 2 of the handle is provided with a gear ring 8; the gear ring is meshed and connected with a sun gear arranged on the shaft 5 through three groups of planet gears 7; the shaft 5 is arranged at the geometric center of the bottom plate of the front half section 2 of the handle; the front end of the shaft 5 is fixedly connected with the screwdriver 1.

The front half handle section 2 and the rear half handle section 3 are connected through a buckle 4. The buckle 4 is arranged on the shell of the front half section 2 of the handle.

The planet wheel 7 is arranged on the fixed shaft through a bearing 9.

Referring to fig. 2, the working principle of the present invention is:

the working principle of the invention is that the two parts of the handle are locked by the buckle under normal conditions, the use method is the same as that of a common screwdriver, and the screwdriver and the handle rotate in the same direction and in the same proportion. When the screwdriver is needed, the buckle is opened, the locking state of the front half part and the rear half part of the handle is released, the screwdriver and the handle rotate in the reverse direction under the work of the planetary gear, and the number of the rotating turns of the screwdriver is smaller than that of the rear half part of the handle, so that the characteristics of reverse rotation and labor saving are achieved.