KR890001613B1 - A box device - Google Patents

Abstract

A socket wrench device includes a gear box at the interconnecting portion of a driving shaft (2) and a driven shaft (12) for sockets. The gear box comprises a ring gear (10') and two driving gears (8,9) driven by respective cams (3,4). Two driving gears are oppositely meshed with the ring gear. The driving shaft has a handle (1) at the outer end portion and two cams (3,4) fitted at the inner end portion in the gear box. The driven shaft rotatably supported to the hub of support arms (15) has a socket holder at the outer end portion and a disk plate (13) on which several pins (11) are fitted so as to allow two driving gears to be held through the holes (6,7) formed on the gear disks.

Description

Box

1 is an exploded perspective view of main parts of the present invention.

2 is a cross-sectional view of the assembled state of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

* Explanation of symbols for main parts of the drawings

1: handle 2: shortened

3, 4: cam 6, 7: through-hole

8, 9: gear disc 8 ', 9': gear tooth

10: cylinder 10 ': gear teeth

11 pin 12 socket drive shaft

15: support arm

The present invention relates to a box used when a large force is required, such as when loosening or tightening a nut for fixing a wheel of a vehicle, and in particular, by installing a rotation reduction device in the middle of a socket driving shaft for turning a nut. It is a configuration of a box that allows the nut to be tightened or loosened even with a small amount of force to turn the handle.

Conventional box is used to loosen or tighten the nut by rotating the drive shaft using the handle by inserting a lever that is a handle on the end of the drive shaft of the socket for turning the nut, but such a conventional box is only for turning the nut at one end of the rod shaft Only the socket is installed at the other end. As the handle is rotated once, the nut is also rotated once and the power is transmitted 1: 1. If there is, it is very unreasonable, and it takes a lot of effort to loosen and tighten using the box, which increases the worker's fatigue and in order to work more easily, the pipe is mounted on the handle shaft to work on the principle of the lever. In this case, however, a separate work tool such as a pipe must be prepared. It was caused.

In order to solve the problem, the present invention has to rotate the handle several times while installing a rotation reduction device in the middle of the drive shaft of the box, so that the socket with the nut can be rotated once so that a large force can be applied to the nut using a small force. The present invention provides a box that can be easily loosened and tightened without undue force to tighten and loosen the nut so that the convenience and efficiency of the work can be improved, with reference to the accompanying drawings. Is as follows.

Referring to FIG. 1, FIG. 2, and FIG. 3, first, the configuration of the present invention will be described. A cam shaft having two upper and lower cams 3 and 4 formed at the other end of the shaft 2 having the handle 1 fitted at one end thereof. (5) to fix the upper and lower cams (3, 4) to the gear discs (8, 9) formed with the through holes (6, 7) that are shifted from each other, but the gears of the outer peripheral surface of the gear discs (8, 9) The teeth 8 'and 9' are engaged with the gear teeth 10 'formed on the inner surface of the gear support cylinder 10 and the pins 11 penetrating through the through holes 6 and 7 of the gear discs 8 and 9, respectively. Is inserted into the through hole 14 formed in the disc portion 13 of the other end of the socket driving shaft 12, and the support arm 15 is formed on the outer peripheral surface of the socket driving shaft 12.

In the drawings, reference numeral 16 is a pin, 17 is a case, 18 and 19 are case fixing bolts and nuts.

As shown in the first, second, and third degrees, the effect of the present invention configured as described above is to turn the handle 1 after inserting one end of the drive shaft of the socket inserted into the nut to be loosened or tightened, such as a nut of a vehicle wheel. As the discs 8 and 9 rotate on the gear teeth 10 'of the inner surface of the support cylinder 10 as the shaft 2 rotates, the socket drive shaft 12 is rotated by a predetermined angle by a deceleration operation described later. It rotates slowly to rotate the socket inserted at one end to loosen or tighten the nut. At this time, the support arm 15 is a bolt inserted around the nut for loosening or tightening to prevent the socket drive shaft 12 from turning over. B. It is used by hanging on the periphery of the nut, etc., and the socket is to use the socket of solid size according to the size (standard) of the nut.

When the deceleration operation described above is described in detail, when the handle 1 is rotated in the left and right directions, the cam shaft 5 fixed by the pin 16 on the short axis 5 is rotated so that the cam portions 3 and 4 are gear discs. (8, 9) is pushed toward the gear teeth (10 ') formed on the inner wall of the cylinder (10) so that the gear teeth (8', 9 ') of the gear disc (8, 9) is the gear teeth of the support cylinder (10) It rotates while being engaged with (10 ') at this time the end surface of the through hole (6, 7) of the gear disc (8, 9) pushes the pin 11 to move the pin 11 and accordingly the socket drive shaft 12 The rotation ratio is the number of teeth of the support cylinder: the number of teeth of the support cylinder-the number of teeth of the gear disc. For example, suppose the teeth of the support cylinder is 60 and the number of teeth of the gear disc is 56. Handle speed: The ratio of the speed of the socket drive shaft

로 감소되면서 소켓구동축(12)에 전달되는 힘은 15배로 증가하게 된다.60: 60-56, or 15: 1,

The force transmitted to the socket drive shaft 12 is increased by 15 times as it decreases.

In this way, the force transmitted to the socket drive shaft 12 is inversely proportional to the reduction ratio of the reduction gear, so that the reduction ratio may be adjusted. Such reduction ratio may be adjusted by adjusting the teeth of the support cylinder 10 and the gear discs 8 and 9 as necessary. will be.

Therefore, it is possible to transmit a strong force of the socket drive shaft 12 even with a small amount of force to turn the handle (1).

As described above, according to the present invention, the nut and bolt can be tightened and loosened with a strong force using a small force without the need for a separate work tool, so that the worker's fatigue can be reduced, thereby making it easier to work and improving work efficiency. It can be.

Claims (1)

In the box where a socket for fitting a nut is installed at one end of the rod shaft and a handle bar is inserted at the other end, a shaft (2) having a handle (1) fitted at one end and two upper and lower cams (3, 4) at the other end The cam shafts 5 formed therein are fixed to each other, and the upper and lower cams 3 and 4 are fixed to the gear disks 8 and 9 having through holes 6 and 7, respectively, which are shifted from each other. The gear teeth 8 'and 9' of the outer circumferential surface are engaged with the gear teeth 10 'formed on the inner surface of the gear support cylinder 10, and the pins penetrate the through holes 6 and 7 of the gear discs 8 and 9, respectively. (11) is a box according to the socket drive shaft (12) is fitted into the through hole (14) formed in the disc portion (13) of the other end, and the support arm (15) is formed on the outer peripheral surface of the socket drive shaft (12).

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