KR940006672Y1 - Cast-cutting saws - Google Patents

Abstract

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Description

Chainsaw Controller

1 is a three-dimensional view of a first embodiment according to the present invention.

2 is a three-dimensional view of a second embodiment according to the present invention.

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

4 is a circuit block diagram according to a first embodiment according to the present invention.

5 is a circuit block diagram according to a second embodiment according to the present invention.

* Explanation of symbols for main parts of the drawings

10: conductive piece 12: extension part

14: creep 16, 18: lead

22: socket 24: selector switch

26: warning means 28: control scaffold

30: plug 32: between adjustments

40: power supply 42: relay control means

46: reset means 48: relay

50: driver 52: control circuit

54: reset circuit 56: automatic reset means

80: gypsum bag 82: coating outer layer

85: electric motor 86: chainsaw

87: motor shaft 82: chainsaw blade

89: chainsaw plug 90: affected part

The present invention relates to a gypsum chainsaw control device of the present invention, and more particularly, to a control device capable of automatically stopping operation of a chainsaw when a coating material such as medical plaster is peeled off from a chainsaw.

The human body is likely to be fractured by extraterrestrial forces, and the newborn baby may be born with birth defects.

Nowadays, this type of treatment for fractures or malformations of the body always wraps the covering material, such as medical plasters, in the fractures or malformations of the body and hardens the plaster so that the wounded body can recover quickly without being affected by extraterrestrials. It can be.

After the wound is wound around the affected body for several days, it is convenient to observe by cutting off the plaster with a chainsaw and remove it at the same time. If necessary, it can be left as it is.

In general, gypsum chainsaws measure the cutting depth of the saw according to the operator's eye contact or experience in use.

Therefore, cutting the gypsum without damaging the patient's skin and muscles requires skill, and even when cut with great care, it often unexpectedly hurts the skin or muscles.

As a result, the patient may have fear before cutting the gypsum and the doctor may worry that the process of cutting the gypsum is delayed.

In particular, when a plaster removal operation is performed on a newborn child, a child, or a patient who is unable to control himself, the chainsaw may hurt the skin or muscles of the affected area because the patient may move his body and shake manually. It is easy to cause unexpected situations to coat.

In the chainsaw control device for plaster according to the present invention, a conductive piece is placed in advance between the plaster layer of the medical plaster bag and the cotton wool, and at least a portion of the conductive piece extends outside the plaster bag, and the chainsaw A control loop is connected to the control unit in series with the conductive piece, which controls the relay control means used to interrupt the power supply for the chainsaw and the reset means for resetting the relay control means and the surroundings. It consists of an alarm means that can emit light or voice.

When the operator removes the plaster layer with a chainsaw connected to the control device according to the present invention, the relay always opens when the excitation of one of the relay means through the control loop is exerted on the conductive piece. It jumps to the close contact and the power supply of the chainsaw is cut off immediately so that the chainsaw is not accidentally injured in the patient's skin or muscles.

The control device also includes a reset means for longitudinally connecting the operating power of the chainsaw and a lighted or alarmed alarm means with a warning action.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 3, the gypsum bag 80 on the affected part 90, in which the patient's body is fractured or deformed, is coated with the tearable cotton wool inner layer 82 and water which are connected to the skin of the affected part. It has the outer side 85, and the coating outer layer 84 consists of coating materials, such as ordinary medical gypsum and resin.

A conductive piece 10 is placed in advance between the cotton wool inner layer 82 and the coating outer layer 84, and the conductive piece 10 is an example of a material having good conductivity without affecting the determination and diagnosis of X-rays. For example, it is made of tin foil or aluminum foil.

The conductive piece 10 has an extension 12 extending outward of the gypsum bag 20, which is bent to the outside of the gypsum bag 80 and the grip 14 and lead 16. It is best to connect successively to the control device in the power supply control box 80 in the present invention.

The chainsaw 86 used to cut the sheath outer layer 84 is a shaft oscillating or rotating motor (not shown) and a chainsaw blade 88 attached to the motor shaft 87 which reciprocates at high speed. The motor shaft 87 is also connected to the control device in the control box 20 in the lid 18 and constitutes a control circuit with the conductive piece 10.

The chainsaw 86 is inserted into the socket 22 of the control box 20 in the plug 89 to form electrical contact, thereby supplying the operating power to the motor of the chainsaw 86 in the control device and controlling the control box 20. On the control device inside the fan), the selector switch 24, the warning means 26 and the control footrest 28 of the manual reset means are connected in series, and the control box 20 is connected to an external power source by a plug 30. have.

The warning means 26 is an electric or electronic alarm and emits a warning light or voice when acting, but if it is on, the alarm is capable of the surface of the control box 20, the surface of the chainsaw 86 or the like. By attaching it in place it will be very easy to see when the gypsum is being cut.

FIG. 2 shows another embodiment of this gypsum chainsaw control device, which is generally similar to the embodiment shown in FIG. 1 except that the control footrest is a manual reset means of the first speed in the adjustment period 32 of the automatic reset means. 28) replaced. 4 is a circuit block diagram showing a first embodiment of a gypsum chainsaw control device in which the control device immediately contacts the power supply 40, the selector switch 24, and the conductive piece 10 of the chainsaw blade 88. The relay control means 42 used to interrupt the operation power of the chainsaw motor, the warning means 26 and the chainsaw motor 85 which turn on the warning light at the moment when the saw blade 88 contacts the conductive piece. Passive reset means 46 for freshly operating power.

The relay control means 42 is composed of a relay 48 driver 50 and a control circuit 52 and the passive reset means 46 is comprised of the control scaffold 28 and the reset circuit 54.

The power supply 40 is started when external power is supplied to the plug 30, and outputs another power, which is directly supplied to the operator via the control of the selection switch 24. After supplying to the chainsaw motor 85 or via the control of the relay control means 42, the operator directly supply this power to the chainsaw motor 85 or after the control of the relay control means 42 It selects whether to supply to the chainsaw motor 85 again.

When the operator switches the selector switch 24 to the first contact point A, power is not directly supplied to the chainsaw motor 85 but is input to the common contact point of the relay 48 and the relay 48 is always Located on the closed contact NC to prevent the chainsaw motor 85 from operating, and this power supply 40 also outputs a separate power from the control circuit 52 to the control circuit 52. The reset circuit 54 is controlled when the operator steps on the control foot 28 of the passive reset means 46, since it can maintain a boundary state that can receive and operate the excitation signal of the passive reset means 46 at any time. The driver 50 is operated while operating the excitation of the circuit 52, and the relay 48 is driven to generate a switching operation so that the relay 48 is always closed and always open at the contact NC to bounce to the contact NO. Coming out and supplied by the power supply 40 are common Via a contact point (NO) is always open in the (C) is supplied to the chainsaw motor 85 rotates the chainsaw motor 85.

At this time, the operator can start the operation by peeling off the plaster using the chainsaw 86.

The saw blade 88, the conductive piece 10, the warning means 26 and the control circuit 52 at the moment when the saw blade 88 is in contact with the conductive piece 10 while cutting the gypsum coating outer layer 84. The operation of the warning means 26 is initiated through the control loop, which causes the warning light or voice to be emitted. In addition, the control circuit 52 immediately stops the operation of the driver 50 and the relay 48 causes the driver 50 to operate. Since the chain saw 86 does not operate, the chain saw 86 immediately stops the chain saw 86 by immediately returning from the open contact NO to the closed contact NC and interrupting the operation power of the chainsaw motor 85 in progress. Avoid injury to the patient's skin or muscles.

If the operator wants to start the chainsaw 86 again, the control scaffold 28 is brightened as described above, and the control circuit 52 is further excited to the reset circuit 54 and the relay 48 again. If it is always driven after being driven by the driver 50 to return to the contact point NO, which is turned off from the contact point NC, the operating power of the chain saw motor 85 is energized again.

This relay 48 may be an electronic or mechanical control circuit.

In Fig. 4, the warning means 26 is a warning light bulb that can emit substantially light, but the warning means may be a buzzer that emits a voice.

FIG. 5 is a circuit block diagram showing a second embodiment of the gypsum chainsaw control device. FIG.

The fifth plug 30, the power supply 40, the selector switch 24, the relay control means 42, the warning means 26, the chainsaw 86 and the conductive piece 10 are all Same as the corresponding component except that the automatic reset means 56 replaces the manual reset means 46 during the fourth way.

The automatic reset means 56 may be a temporary adjusting pulse generator, which is excited at the moment when the saw blade 88 contacts the conductive piece 10 so that one outputs a pulse to the relay control means 42 and the relay control means ( 42) the relay 48 is always open while the pulse is being input, returning from the contact NO to the closed contact NC, and immediately stopping the operation power of the chainsaw motor 85 to stop the patient's skin or Injury to the muscles can be avoided and after the time delay of the pulse generation has ended, the relay control means 42 does not have a pulse input so that the relay 48 is always turned off from the closed contact NC. Springs to NO and the operating power of the chain saw motor 85 is energized again to continue operation.

The length of the pulse generation time delay of the automatic reset means 56 can be adjusted by modifying the lowering value in the variable resistor 58 and the operator can adjust the variable resistor 58 to the adjusting rod 32 attached on the control box 20. ) Can be modified.

The operation method when the operator uses the first embodiment of the chainsaw control device for plaster shown in FIGS. 1 and 4 is as follows.

(1) The external power is supplied to the control box 20 using the plug 30, and (2) the plug 89 of the chainsaw 86 is plugged into the socket 22 of the control box 20 to be electrically (3) connect the extension part 12 of the conductive piece 10 to the lead 16 fitted in the creep 14, and fix the other lead 18 on the chainsaw, (4) Switch the selector switch to the position of the contact point B, (5) press the control foot 28 to energize the operating power of the chain saw 86 and at the same time the bulb of the warning means 26 is turned off so that the control box ( 20, check that the operation is correct, and (6) when the saw blade 88 is in contact with the conductive piece 10 when cutting the outer coating layer 84 of the gypsum bag 80 with the chainsaw 86 The operating power of the saw 86 is immediately disconnected and inoperable, thereby avoiding injuries to the skin or gold of the patient, and at the same time, the bulb of the warning means 26 emits light to the operator. (7) If you want to continue to operate the chainsaw 86, press the control footrest 28 with the short-term foot and the power supply of the chainsaw will be energized and continue to While the saw 86 can be operated and the bulb of the warning means 26 is turned off accordingly, (8) and (6) and (7) are repeated until the plaster cutting operation is finished, ( 9) If the operator does not need to control the operating power of the chainsaw 86 using this control unit, the chainsaw 86 will operate as usual if the selector switch 24 is switched to the position of the contact point A. It can continue to operate and the working power source will not be interrupted even if the saw blade 88 contacts the conductive piece.

(10) Before the operation, the operator first demonstrates and demonstrates, so that the patient and family understand the whole course.

The operation method when the operator uses the second embodiment of the chainsaw control device for plaster shown in FIGS. 2 and 5 is the first four items. The operation is the operation of the first embodiment (1) to (4). ) And the subsequent manipulations are as follows.

(5) Selecting the length of time delay for turning off the operating power of the chainsaw 86 by turning the adjusting section 32, and (6) Plastering table 30 with the chainsaw 86 allows the covering outer layer 84 to be removed. By cutting, the power supply of the chain saw 86 is immediately disconnected and inoperable at the moment when the chain saw blade 88 comes into contact with the conductive piece 10, thereby avoiding injury to the skin and muscles of the patient. The bulb of the means 26 also lights up to warn the operator to stop the operation of the chainsaw, and (7) when the tile delay through which the chainsaw 86 stops operating power has passed, the operating power of the chainsaw 86 Immediately and automatically energized, the chainsaw 86 can be operated continuously and at the same time the bulb of the warning means 26 goes out accordingly, (8) and until the plaster removal operation is finished (6) and (7). Repeat the operation of (9), but if the operator uses this control to operate the chainsaw 86 If it is not necessary to control the circle, if the selector switch ($ 2) is switched to the position of the contact point A, it can continue to operate as usual of the chainsaw 86 and the chainsaw blade 88 is connected to the conductive piece 10. Operating power does not stop even if it touches.

(10) Before the operation, the operator first demonstrates and demonstrates the course to the patient and his family.

In performing gypsum removal operation using the gypsum chainsaw control device according to the present invention, the electric saw is cut off immediately after the chain saw cuts the outer layer of the gypsum bag by turning off the power supply of the chainsaw. This continues to work to avoid accidental injury to the patient's skin and muscles, while at the same time eliminating the frustrating psychology of fearing that the patient might accidentally hurt the skin and muscles with a plaster chainsaw. In addition, by allowing the operator to have confidence, not only can the time required for gypsum removal surgery be effectively shortened, but the apparatus can be operated by a nursing worker or a workman with a general rigid body only. It can reduce the burden on the work of doctors or senior nurses.

Claims (7)

The conductive piece placed in advance between the cotton wool inner layer of the gypsum bag covering the patient's skin and the hardened coating outer layer, and the chainsaw used for cutting the outer layer of the gypsum bag covering material immediately contact the conductive piece. And a relay control means for interrupting the operation power, and after the operation power of the chainsaw is disconnected, driving the relay control means to a reset means to newly energize the operation power of the chainsaw. The gypsum chainsaw control device according to claim 1, further comprising a warning means for generating a light that requires attention when the chainsaw and the conductive piece contact each other. The gypsum chainsaw control device according to claim 1, further comprising a warning means for generating a voice that requires attention when the chainsaw and the conductive piece contact each other. The gypsum chainsaw control device according to claim 1, wherein in the selection switch, a selective operation power can be directly supplied to the chainsaw so that the relay control means can be selected not to be controlled to stop the power supply. 2. The apparatus according to claim 1, wherein the reset means has a passive circuit which excites the relay control means to enable the chain saw to newly energize the interrupted operating power, and a control scaffold capable of starting and operating the reset circuit when stepped on. A chainsaw control device for plaster with special ice. According to claim 1, wherein said reset means is a pulse generator and at the moment of contact with the chainsaw and the conductive piece outputs a pulse to the relay control means for a certain time delay to the relay control means, and drives the relay control means. Gypsum chainsaw control characterized in that the control power supply immediately stops the operation power of the control saw so that the relay control means automatically energizes the operation power in which the chainsaw is stopped when the time delay for generating the pulse ends. Device. The gypsum chainsaw control device according to claim 1, wherein the pulse generation time delay of the pulse generator can also be adjusted via a variable resistor.