KR102420498B1 - Electric hydraulic tool having multi-function structure - Google Patents

Abstract

The present invention relates to a multifunctional electric automatic return hydraulic tool capable of selectively performing various functions such as hexagonal compression, navel compression, and cutting. That is, the present invention is to provide the multifunctional electric automatic return hydraulic tool in which one of a hexagon crimping die for crimping a cable and a terminal, a die for crimping a belly button for crimping the cable and the terminal, and a die for cutting for cutting the cable is selectively detachably assembled so that various functions such as hexagonal pressing, belly button pressing, and cutting can be selectively performed. The multifunctional electric automatic return hydraulic tool includes a case, a crank, a plunger assembly, a cylinder body, an oil container, a piston assembly, a head, a fix assembly, and a relief valve assembly.

Description

Multifunctional electric automatic return hydraulic tool {ELECTRIC HYDRAULIC TOOL HAVING MULTI-FUNCTION STRUCTURE}

The present invention relates to a multifunctional electric automatic return hydraulic tool, and more particularly, to a multifunctional electric automatic return hydraulic tool capable of selectively performing various functions such as hexagonal crimping, navel crimping, and cutting.

In general, as a method of connecting between a terminal and a cable for bonding a terminal to the end of a cable, a method of crimping a terminal and a cable with a crimping tool so that the terminal is connected while wrapping the cable, and a method of ultrasonically welding the cable to the terminal methods are being used.

The joint method for connecting the terminal and the cable by crimping the terminal and the cable using the crimping tool has a disadvantage in that it cannot be applied with an even crimping force. There are disadvantages in that the tool cannot tighten the terminals with a constant and constant force, and there are inconveniences such as the operator having to pressurize the crimping tool one by one.

In order to solve these conventional problems, the applicant of the present application stated, "The piston assembly is raised and lowered with a constant force by the plunger assembly that repeats the lifting and lowering motion by the motor and the hydraulic oil circulated by the relief valve body, and the fix assembly is compressed at the same time. An electric automatic machine that compresses the object with a certain force, and improves the plunger of the plunger assembly to a structure in which a high-pressure operable plunger and a low-pressure operable low-pressure plunger can both elevate and lower, so that the compression speed of the object to be pressed under no load can be made fast. Return hydraulic tool" has already been patented and registered.

However, as only one crimping die for crimping the crimping object is mounted in the fix assembly of the conventional electric automatic return hydraulic tool, there is a problem in that the crimping target of different sizes and diameters cannot be crimped.

In addition, as only the crimping die that performs only the crimping function is mounted on the fix assembly of the existing electric automatic return hydraulic tool, the hydraulic tool with the umbilical crimp function that crimps the cable and terminal and integrates it with the cutter function to cut the cable. There is a problem that a hydraulic tool and the like must be separately manufactured.

Registered Patent Registration No. 10-1457001 (2014.10.27)

The present invention was devised in view of the above problems, and a hexagonal crimping die for crimping a cable and a terminal, a navel crimping dice for crimping a cable and a terminal, and a cutting dice for cutting the cable An object of the present invention is to provide a multifunctional electric automatic return hydraulic tool that selectively performs various functions such as hexagonal crimping, navel crimping, and cutting by selectively and detachably assembling one of them.

The present invention for achieving the above object includes: a case in which a battery adapter for battery fastening and a motor control board are built-in at the lower end, and a motor is built-in thereon; a crank having an upper portion formed of a swash plate and connected to an output shaft of the motor on a lower surface and rotatably seated in a bearing case disposed above the motor; a plunger assembly including a plunger supported so as to be elevating and lowering on the swash plate of the crank; a cylinder body having a space in which the plunger assembly is installed and a check valve installation space formed in the lower part, and a piston installation space formed in the upper part; a distribution which surrounds the outer diameter of the cylinder body and is integrally mounted and filled with oil; a piston assembly having a piston rod mounted so as to be raised and lowered by oil pressure in the piston installation space of the cylinder body and ascending while compressing a spring by oil pressure or descending by an elastic restoring force of the spring when oil pressure is released; a head coupled to the upper outer diameter of the cylinder body while covering the piston assembly; Each rotation is possible on the upper surface of the head so that one of the hexagonal crimping dice for crimping the cable and terminal, the umbilical crimping dice for crimping the cable and the terminal, and the cutting dice for cutting the cable are separably fastened a fix assembly which is hingedly fastened; a relief valve assembly mounted so as to open and close between the piston installation space and the distribution in order to return the oil discharged to the piston installation space; including,

The fix assembly may include: a first fix provided in a structure in which a clasp is formed at an upper end and hinged to be angularly rotatable on one side of an upper surface of the head; a second fix hinged so as to be angularly rotatable to the other side of the upper surface of the head; a lower locking groove formed on the upper surface of the piston rod; a lower locking ball elastically supported by a spring and mounted on a side wall of the lower locking groove; an upper locking groove formed in the lower surface of the second fix; an upper locking ball elastically supported by a spring and mounted on a side wall of the upper locking groove; It provides a multi-function electric automatic return hydraulic tool, characterized in that consisting of.

The hexagonal crimping dies include: a pair of semi-circular rings separably fastened to a lower insert having a lower locking protrusion locked into the lower locking groove and an upper insert having an upper locking protrusion locked and inserted into the upper locking groove. structure, and a locking end is formed on the upper edge of the lower insert and the lower edge of the upper insert, and a locking jaw is formed on the edge of the hexagonal compression die having a pair of semicircular structures to lock and fasten the locking end. characterized in that

The navel pressing die includes: a lower pressing dice having a lower locking protrusion lockingly inserted into the lower locking groove on a lower surface portion and having an umbilical pressing protrusion formed on an upper surface portion; an upper pressing die having an upper locking protrusion that is lock-inserted into the upper locking groove on the upper surface portion, and an umbilical pressing concave portion formed on the lower surface portion; characterized in that it is composed of

The cutting die includes: a lower cutting die having a lower locking protrusion on a lower surface portion for locking insertion into the lower locking groove and a cutting blade formed on an upper surface portion; an upper cutting dice having an upper locking protrusion lockingly inserted into the upper locking groove on the upper surface portion and having a cutting blade formed on the lower surface portion; characterized in that it is composed of

Through the above-described problem solving means, the present invention provides the following effects.

First, one of the hexagonal crimping dies for crimping the cables and terminals, the navel crimping dies for crimping the cables and terminals, and the cutting dies for cutting the cables can be selectively separated into the electric automatic return hydraulic tool. By enabling assembly, various functions such as hexagonal crimping or umbilical cord crimping for integration between cables and terminals, or cutting for cutting cables, etc. can be selectively performed.

Second, compared to the existing hydraulic tools for hexagonal crimping, a hydraulic tool with a navel crimping function, and a hydraulic tool with a cutter function for cutting cables, dies for crimping hexagons, dies for crimping navels, and dies for cutting By providing a hydraulic tool that can use all of the

1 is a front cross-sectional view showing a multi-function electric automatic return hydraulic tool according to the present invention;
2 is a side cross-sectional view showing a multi-function electric automatic return hydraulic tool according to the present invention;
3a to 3f are enlarged cross-sectional views showing the main parts in order that the hexagonal crimping die is mounted on the multifunctional electric automatic return hydraulic tool according to the present invention, and the crimping operation is performed;
4a to 4e are enlarged cross-sectional views showing the main part in order that the navel crimping die is mounted on the multifunctional electric automatic return hydraulic tool according to the present invention to perform the crimping operation;
5A to 5E are enlarged cross-sectional views showing essential parts in order that a cutting die is mounted on the multi-function electric automatic return hydraulic tool according to the present invention, and the cutting operation is performed.

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

1 and 2 are a perspective view showing a multi-function electric automatic return hydraulic tool according to the present invention.

1 and 2, the multi-function electric automatic return hydraulic tool of the present invention is a kind of electric hydraulic tool that can press the object to be pressed or cut the object to be cut while the operator is directly holding the hand. A grippable hollow case 100 is used as a skeleton.

A battery adapter 102 and a motor control board 104 are embedded in the lower end of the case 100 so that the battery for power supply is fastened, and in addition, an on/off switch and an LED indicating the operation status, the battery charge status are displayed. Various configurations for operation and operation convenience such as light emitting diodes are mounted.

At this time, a motor 106 operating using battery power is built-in in the space above the motor control substrate 104 , and the crank 200 rotating according to the rotational driving of the motor 106 is located above the motor 106 . is placed

The crank 200 is rotatably seated in a bearing case 204 disposed above the motor 106 , and its upper surface is formed as an inclined cross-section of the swash plate 202 , and the bottom surface of the motor 106 . It is connected to the output shaft and rotates according to the rotational driving of the motor 106 .

At this time, on the swash plate 202 of the crank 200 , the lower end of the plunger 306 included in the plunger assembly 300 mounted in the cylinder body 400 is closely supported so as to move up and down.

Accordingly, when the crank 200 rotates according to the driving of the motor 106 , the plunger 306 closely supported on the swash plate 202 of the crank 200 moves up and down.

A cylinder body 400 is fixedly mounted above the crank 200 inside the case 100 , and the plunger assembly 300 and the relief valve assembly 900 are installed inside the cylinder body 400 . .

On the other hand, a distribution 500 filled with oil is integrally mounted on the outer diameter of the cylinder body 400 , and the oil in the distribution 500 is supplied to the plunger assembly 300 .

Accordingly, when the crank 200 is rotated, the plunger 306 supported on the swash plate 202 moves up and down, so that the oil flowing in from the distribution 500 can be sent toward the check valve 302, and the check valve The oil passing through 302 is sent toward the piston assembly 600 to raise the piston rod 604 of the piston assembly 600 .

As one configuration of the piston assembly 600 , the piston rod 604 is vertically seated in the piston installation space 408 formed in the upper part of the cylinder body 400 , and the oil pressure passing through the check valve 302 . causes an upward motion.

At this time, the piston assembly 600 is in a state surrounded by the head 700 fastened to the upper outer diameter of the cylinder body 400 , and the upper end of the piston rod 604 is located in the center of the head 700 . It enters the formed through hole.

In addition, between the bottom edge of the head 700 and the top edge of the piston rod 604 of the piston assembly 600, a return spring 606 that provides an elastic restoring force so that the piston rod 604 returns from the elevated position to the lowered position. This is arranged

On the other hand, the relief valve assembly 900 is capable of lifting and lowering in the cylinder body 400 to open and close between the piston installation space 408 and the distribution 500 in order to return the oil discharged to the piston installation space 408 . is mounted

In particular, a fix assembly 800 is hinged to be angularly rotatable on the upper surface of the head 700, and the fix assembly 800 includes a hexagonal crimping die 10 for crimping the cable and the terminal, and the cable and the terminal. One of the navel crimping die 20 for compressing the umbilical cord and the cutting die 30 for cutting the cable is provided in a structure in which it is detachably fastened.

To this end, the fix assembly 800 includes a first fix 802 that is provided in a structure in which a clasp 804 is formed at the upper end portion and is hingedly fastened to one side of the upper surface of the head 700 , and the head ( A second fix 806 hinged angularly rotatably to the other side of the upper surface of the 700 , a lower locking groove 810 formed in the upper surface of the piston rod 604 , and a side wall of the lower locking groove 810 . A lower locking ball 812 that is elastically supported by a spring and mounted therein, an upper locking groove 820 formed on a bottom surface of the second fix 806, and a side wall portion of the upper locking groove 820 are formed. It may be configured to include an upper locking ball 822 that is elastically supported and mounted by a spring.

The hexagonal crimping die 10 is for integrating the cable and the terminal in the form of a hexagonal cross section, and as shown in FIGS. 3A to 3F, a lower locking protrusion (lockingly inserted into the lower locking groove 810) ( The lower insert 830 having 832) and the upper insert 840 having the upper locking protrusion 842 lockingly inserted into the upper locking groove 820 are provided in a pair of semi-circular structures that are respectively detachably fastened. .

At this time, a locking end 850 is formed on the upper edge of the lower insert 830 and the lower edge of the upper insert 840 , and the edge of the hexagonal compression die 10 having a pair of semicircular structures is locked. A locking jaw 11 to which the end 850 is locked is formed.

The navel crimping die 20 is to form a navel-like groove with the cable and the terminal to form a navel-like groove to be integrated into one. The lower locking protrusion 22 is formed, the lower pressing die 21 having the umbilical pressing protrusion 23 formed on the upper surface portion, and the upper locking projection 25 that is locked and inserted into the upper locking groove 820 on the upper surface portion. is formed, and is composed of an upper pressing die 24 in which a umbilical compression concave portion 26 is formed on the bottom portion.

The cutting die 30 is a cutting tool for cutting cables and the like. As shown in FIGS. 5A to 5E , a lower locking protrusion 32 is formed on the bottom to be locked and inserted into the lower locking groove 810 . A lower cutting die 31 having a cutting blade formed on the upper surface portion, an upper locking protrusion 34 for locking insertion into the upper locking groove 820 is formed on the upper surface portion, and an upper cutting blade having a cutting blade formed on the lower surface portion It is composed of dice (33).

Here, the operation flow of the multi-function electric automatic return hydraulic tool of the present invention having the above configuration is as follows.

The multifunctional electric automatic return hydraulic tool according to the present invention includes one of the hexagonal crimping die 10, the belly button crimping die 20, and the cutting dice 30 fastened to a fix assembly 800 to obtain a desired The focus is on making it possible to carry out the work.

hexagonal crimping

3A to 3F are enlarged cross-sectional views showing essential parts in order that the hexagonal crimping die is mounted on the multifunctional electric automatic return hydraulic tool according to the present invention to perform the crimping operation.

First, the lower insert 830 and the upper insert 840 are mounted by separating the first fix 802 and the second fix 806 of the fix assembly 800 .

To this end, as shown in FIGS. 3A and 3B , when the lower locking protrusion 832 of the lower insert 830 is inserted into the lower locking groove 810 formed on the upper surface of the piston rod 604, it is elastic by the spring. By locking and inserting the supported lower locking ball 812 into the neck of the lower locking protrusion 832 , the lower insert 830 is fixed and the upper locking groove formed on the bottom of the second fix 806 . When the upper locking protrusion 842 of the upper insert 840 is inserted into the 820, the upper locking ball 822 elastically supported by a spring is locked and inserted into the neck of the upper locking protrusion 842, so that the upper insert A fixation of 840 is made.

At this time, as shown in FIGS. 3A and 3B, a locking end 850 is formed on the upper edge of the lower insert 830 and the lower edge of the upper insert 840, and as shown in FIG. 3B, the hexagonal compression die ( 10) is provided in a pair of semi-circular structures, and a locking jaw 11 is formed on the edge of the bar.

Accordingly, as shown in FIG. 3c , the locking jaws 11 of the hexagonal compression dies 10 having a pair of semicircular structures are locked and fastened to the locking ends 850 of the lower insert 830 and the upper insert 840 . Thereby, fixing of the die 10 for hexagonal crimping|compression-bonding is made.

Preferably, as shown in Fig. 3b, the hexagonal compression dies 10 are provided in plurality having various hexagonal cross-sectional sizes, so that they can be selected and used according to the diameter of the compression object.

Next, as shown in FIG. 3D , the cable 1000 and the terminal 1100 as the crimping object are placed in the hexagonal crimping die 10 .

Subsequently, when the motor 106 is driven, the crank 200 connected to the shaft of the motor 106 rotates, and the crank 200 is closely supported on the swash plate 202 of the crank 200 according to the rotation of the crank 200 . The plunger 306 moves up and down.

That is, as the swash plate 202 of the crank 200 rotates, the plunger 306 is pushed upward by the high surface of the swash plate 202 and rises, and the plunger 306 is the lower surface of the swash plate 202 . If it is located in the , it descends by the elastic restoring force of the return spring.

At this time, when the plunger 306 is raised and lowered, the oil in the circulation 500 is sucked and is sent to the piston assembly 600 through the check valve 304 .

Subsequently, as shown in FIG. 3e, the piston rod 604 rises by the oil pressure sent toward the piston assembly 600, and the lower insert 812 mounted on the upper end of the piston rod 604 rises, The hexagonal crimping die 10 is integrated by crimping the cable 1000 and the terminal 1100, which are crimping objects.

On the other hand, when the oil is continuously discharged into the piston installation space 408 of the cylinder body 400 and the set pressure exceeds the specified value, the oil is returned to the distribution 500 through the relief valve assembly 900, so that FIG. 3f As shown, the piston rod 604 and the lower insert 812 are lowered, and when the cable 1000 and the terminal 1100 compressed by the hexagonal crimping die 10 are taken out, the hexagonal crimping operation is terminated.

belly button press

4A to 4E are enlarged cross-sectional views showing in order that a navel crimping die is mounted on the multifunctional electric automatic return hydraulic tool according to the present invention to perform a crimping operation.

First, the first fix 802 and the second fix 806 of the fix assembly 800 are spread apart to mount the navel compression die 20 .

To this end, when the lower locking protrusion 22 of the lower pressing die 21 is inserted into the lower locking groove 810 formed on the upper surface of the piston rod 604 as shown in FIGS. 4A and 4B, the spring By locking and inserting the elastically supported lower locking ball 812 into the neck of the lower locking protrusion 22 , the lower pressing die 21 is fixed, and the upper portion formed on the lower surface of the second fix 806 . When the upper locking protrusion 25 of the upper pressing die 24 is inserted into the locking groove 820 , the upper locking ball 822 elastically supported by a spring is locked and inserted into the neck of the upper locking protrusion 25 . , the upper pressing die 24 is fixed.

Next, as shown in FIG. 4C , the cable 1000 and the terminal 1100 as a compression object are disposed between the lower compression die 21 and the upper compression die 24 of the navel compression die 20 .

Subsequently, when the motor 106 is driven, the crank 200 connected to the shaft of the motor 106 rotates, and the crank 200 is closely supported on the swash plate 202 of the crank 200 according to the rotation of the crank 200 . The plunger 306 moves up and down.

That is, as the swash plate 202 of the crank 200 rotates, the plunger 306 is pushed upward by the high surface of the swash plate 202 and rises, and the plunger 306 is the lower surface of the swash plate 202 . If it is located in the , it descends by the elastic restoring force of the return spring.

At this time, when the plunger 306 is raised and lowered, the oil in the circulation 500 is sucked and is sent to the piston assembly 600 through the check valve 304 .

Subsequently, as shown in FIG. 4D, the piston rod 604 rises by the oil pressure sent toward the piston assembly 600, and the lower compression die 21 mounted on the upper end of the piston rod 604 rises. , the umbilical cord crimping protrusion 23 of the lower crimping die 21 presses and compresses the cable 1000 and the terminal 1100 supported by the umbilical crimping recess 26 of the upper crimping die 24, so that the umbilical crimping is performed. The dice 20 for crimping the cable 1000 and the terminal 1100 as the crimping object is integrated.

On the other hand, when the oil is continuously discharged into the piston installation space 408 of the cylinder body 400 and the set pressure exceeds the specified value, this oil is returned to the circulation 500 through the relief valve assembly 900, so that FIG. 4e As shown in Fig., the piston rod 604 and the lower crimping die 21 descend, and when the cable 1000 and the terminal 1100 crimped by the navel crimping die 20 are taken out, the belly button crimping operation is finished. .

cutting operation

5A to 5E are enlarged cross-sectional views showing essential parts in order that a cutting operation is performed by mounting a cutting die to the multi-function electric automatic return hydraulic tool according to the present invention.

First, the first fix 802 and the second fix 806 of the fix assembly 800 are spread apart to mount the cutting die 30 .

To this end, as shown in FIGS. 5A and 5B , when the lower locking protrusion 32 of the lower cutting die 31 is inserted into the lower locking groove 810 formed on the upper surface of the piston rod 604, the spring By locking and inserting the elastically supported lower locking ball 812 into the neck of the lower locking protrusion 32 , the lower cutting die 31 is fixed, and the upper portion formed on the lower surface of the second fix 806 . When the upper locking protrusion 34 of the upper cutting die 33 is inserted into the locking groove 820 , the upper locking ball 822 elastically supported by a spring is locked and inserted into the neck of the upper locking protrusion 34 . , the upper cutting die 33 is fixed.

Next, as shown in FIG. 5C , the cable 1000 as the object to be cut is disposed between the lower cutting die 31 and the upper cutting die 33 of the cutting die 30 .

Subsequently, when the motor 106 is driven, the crank 200 connected to the shaft of the motor 106 rotates, and the crank 200 is closely supported on the swash plate 202 of the crank 200 according to the rotation of the crank 200 . The plunger 306 moves up and down.

That is, as the swash plate 202 of the crank 200 rotates, the plunger 306 is pushed upward by the high surface of the swash plate 202 and rises, and the plunger 306 is the lower surface of the swash plate 202 . If it is located in the , it descends by the elastic restoring force of the return spring.

At this time, when the plunger 306 is raised and lowered, the oil in the circulation 500 is sucked and is sent to the piston assembly 600 through the check valve 304 .

Subsequently, as shown in FIG. 5D, the piston rod 604 rises by the oil pressure sent toward the piston assembly 600, and the lower cutting die 31 mounted on the upper end of the piston rod 604 rises. , the cutting blade of the lower cutting die 31 presses the cable 1000 supported by the upper cutting die 33 and cuts it.

On the other hand, when the oil is continuously discharged into the piston installation space 408 of the cylinder body 400 and the set pressure exceeds the specified value, the oil is returned to the distribution 500 through the relief valve assembly 900, so that FIG. 5e As shown in Fig., the piston rod 604 and the lower cutting die 31 descend, thereby ending the cutting operation of the cable 1000 by the cutting die 30.

In this way, one of the hexagonal crimping die 10 for crimping the cable and the terminal, the navel crimping die 20 for crimping the cable and the terminal, and the cutting die 30 for cutting the cable are electrically operated. By allowing the return hydraulic tool to be selectively and separably assembled, various functions such as hexagonal crimping or umbilical cord crimping work, or cutting work can be selectively performed, and the operator's convenience in using the hydraulic tool can be provided.

Meanwhile, an anti-corrosion coating layer may be applied to the spring 606 to prevent corrosion of the metal surface.

The coating material of this anti-corrosion coating layer is bisphenol A novolac-type glycidyl ether 19% by weight, isopropylamine 18% by weight, hafnium 14% by weight, organic magnesium 14% by weight, titanium oxide (TiO ₂ ) 9% by weight, 10% by weight of aluminum oxide (Al ₂ O ₃ ), 16% by weight of a polymer fluorochemical active, and a coating thickness of 7 μm.

Bisphenol A novolac-type glycidyl ether and isopropylamine serve to prevent corrosion and discoloration, and hafnium is a corrosion-resistant transition metal element that has excellent waterproof and corrosion resistance.

The organic magnesium oxide serves to impart alkali resistance and slidability to the surface of the coating film, the polymer fluorochemical active serves as a surfactant, and titanium oxide and aluminum oxide are added for the purpose of fire resistance and chemical stability.

The reason why the ratio of the constituents and the coating thickness are numerically limited as described above is that the present inventors repeatedly failed several times and analyzed through test results. As a result, the optimal anti-corrosion effect was exhibited at the ratio.

In addition, the case 100 may be coated with an antifouling coating layer made of an antifouling coating composition so as to effectively prevent adhesion and removal of contaminants.

The antifouling coating composition contains sodium sesquicarbonate and butylcarbitol in a molar ratio of 1:0.01 to 1:2, and the total content of sodium sesquicarbonate and butylcarbitol is 1 to 10% by weight based on the total aqueous solution. .

The sodium sesquicarbonate and butyl carbitol are preferably 1:0.01 to 1:2 as a molar ratio. When the molar ratio is out of the above range, the applicability of the case 100 decreases or moisture adsorption on the surface after application increases. There is a problem in that the coating film is removed.

The sodium sesquicarbonate and butyl carbitol are preferably 1 to 10% by weight of the total aqueous solution of the composition, and when it is less than 1% by weight, there is a problem in that the applicability of the case 100 is lowered, and when it exceeds 10% by weight, the coating film Crystal precipitation is likely to occur due to the increase in thickness.

On the other hand, as a method of applying the present antifouling coating composition to the case 100, it is preferable to apply by a spray method. In addition, the final coating film thickness of the case 100 is preferably 700 to 2500 Å, more preferably 900 to 2000 Å. If the thickness of the coating film is less than 700 Å, there is a problem in that it is deteriorated in the case of high-temperature heat treatment, and if it exceeds 2500 Å, there is a disadvantage that crystal precipitation on the coated surface is easy to occur.

In addition, the present antifouling coating composition may be prepared by adding 0.1 mol of sodium sesquicarbonate and 0.05 mol of butylcarbitol to 1000 ml of distilled water and then stirring.

The reason why the ratio of the constituents and the thickness of the coating film were numerically limited as described above was that the present inventors repeated several failures and analyzed the test results.

In addition, a shock absorbing part may be further installed around the lower end of the case 100 .

The shock absorbing part may be made of a rubber material, and the raw material content ratio of this shock absorbing part is rubber 60% by weight, dibutylthiourea 8% by weight, calcium stearate 6% by weight, carbon black 19% by weight, 3C (N- 3% by weight of PHENYL-N'-ISOPROPYL-P-PHENYLENEDIAMINE) and 4% by weight of organic peroxide are mixed.

Dibutylthiourea is added to improve vulcanization acceleration, etc., calcium stearate is added to act as a softener, and carbon black is added to increase or improve abrasion resistance and thermal conductivity.

3C (N-PHENYL-N'-ISOPROPYL-P-PHENYLENEDIAMINE) is added as an antioxidant, and organic peroxide is added to act as an accelerator.

Therefore, in the present invention, the elasticity, toughness and rigidity of the shock absorbing part are increased, so that durability is improved, and thus the life of the shock absorbing part is increased.

The tensile strength of the rubber material is 155Kg/cm2.

The reason for limiting the rubber material constituents and constituents and limiting the numerical value of the mixing ratio is that the present inventor repeatedly failed several times and analyzed the test results to find the optimal effect in the composition and numerical limit ratio. indicated.

In addition, a coating agent for heat dissipation may be applied to the surface of the outer case of the motor 106 , thereby effectively dissipating the heat emitted from the motor 106 .

This heat dissipation coating composition contains 58% by weight of potassium silicate, 11% by weight of chromium oxide, 13% by weight of graphite, 8% by weight of silicon nitride, 3% by weight of sodium hydroxide (NaOH), 3% by weight of titanium oxide, 2% by weight of polyamide wax, 3% by weight of 3-aminopropyl trimethoxysilane.

Potassium silicate acts as a binder resin, chromium oxide acts as a wear resistance, graphite has excellent thermal conductivity and electrical properties, silicon nitride improves strength and prevents cracking, sodium hydroxide acts as a dispersant, and titanium oxide has weather resistance For this purpose, polyamide wax acts as an anti-settling agent, and 3-aminopropyl trimethoxysilane acts as an adhesion enhancer.

The reason for limiting the constituent materials and constituents as described above and limiting the numerical value of the mixing ratio is that the present inventors repeatedly failed several times and analyzed the test results to find the optimal effect in the constituents and numerical limiting ratios. indicated.

10: die for hexagonal crimping 11: lock jaw
20: navel compression die 21: lower pressing die
22: lower locking projection 23: umbilical pressing projection
24: upper pressing die 25: upper locking projection
26: navel compression recess 30: dice for cutting
31: lower cutting die 32: lower locking projection
33: upper cutting die 34: upper locking projection
100: case 102: adapter
104: substrate 106: motor
200: crank 202: swash plate
204: bearing case 300: plunger assembly
302: check valve 306: plunger
400: cylinder body 408: piston installation space
500: distribution 600: piston assembly
604: piston rod 606: spring
700: head 800: fix assembly
802: first fix 804: jamming jaw
806: second fix 810: lower lock groove
812: lower locking ball 820: upper locking groove
822: upper locking ball 830: lower insert
832: lower locking projection 840: upper insert
842: upper locking projection 850: locking end
900 relief valve assembly 1000 cable
1100 : terminal

Claims (4)

a case 100 in which a battery adapter 102 for battery fastening and a board 104 for motor control are built-in at the lower end, and a motor 106 is built-in thereon;
The upper part is formed of the swash plate 202, and the lower surface thereof is connected to the output shaft of the motor 106, and the crank 200 is rotatably seated in the bearing case 204 disposed above the motor 106;
a plunger assembly 300 including a plunger 306 supported on the swash plate 202 of the crank 200 so as to be raised and lowered;
a cylinder body 400 having a space in which the plunger assembly 300 is installed and a check valve installation space in the lower part, and a piston installation space 408 in the upper part;
a distribution 500 that surrounds the outer diameter of the cylinder body 400 and is integrally mounted and filled with oil;
It is mounted so as to be lifted by oil pressure in the piston installation space 408 of the cylinder body 400, and rises while compressing the spring 606 by the oil pressure or by the elastic restoring force of the spring 606 when the oil pressure is released. a piston assembly (600) having a descending piston rod (604);
a head 700 coupled to the upper outer diameter of the cylinder body 400 while covering the piston assembly 600;
One of the hexagonal crimping die 10 for crimping the cable and terminal, the belly button crimping die 20 for crimping the cable and the terminal, and the cutting die 30 for cutting the cable are detachably fastened a fix assembly 800 hinged so as to be angularly rotatable on the upper surface of the head 700;
In order to return the oil discharged to the piston installation space 408, a relief valve assembly 900 that is mounted in the cylinder body 400 to open and close between the piston installation space 408 and the distribution 500; including,
The fix assembly 800 includes:
a first fix 802 provided in a structure in which a clasp 804 is formed on the upper end portion and hinged to be angularly rotatable on one side of the upper surface of the head 700; a second fix 806 hinged to the other side of the upper surface of the head 700 so as to be angularly rotatable; a lower locking groove 810 formed on the upper surface of the piston rod 604; a lower locking ball 812 that is elastically supported by a spring and mounted on the sidewall of the lower locking groove 810; an upper locking groove (820) formed on a bottom surface of the second fix (806); an upper locking ball 822 that is elastically supported by a spring and mounted on a side wall of the upper locking groove 820;
The hexagonal crimping die 10 is:
A lower insert 830 having a lower locking protrusion 832 lockingly inserted into the lower locking groove 810, and an upper insert having an upper locking protrusion 842 lockingly inserted into the upper locking groove 820 (840) is provided in a pair of semi-circular structures that are respectively separably fastened to the A locking jaw 11 to which a locking end 850 is locked is formed on the edge of the hexagonal compression die 10 having a;
The dice 20 for pressing the umbilicus is:
a lower pressing die 21 having a lower locking protrusion 22 lockingly inserted into the lower locking groove 810 on the lower surface portion and having an umbilical pressing protrusion 23 formed on the upper surface portion; It is composed of an upper pressing die 24 having an upper locking protrusion 25 for locking insertion into the upper locking groove 820 on the upper surface portion and having an umbilical pressing concave portion 26 formed on the lower surface portion;
The cutting die 30 includes:
a lower cutting die 31 having a lower locking protrusion 32 lockingly inserted into the lower locking groove 810 on the lower surface portion and having a cutting blade formed on the upper surface portion; It is composed of an upper cutting die (33) having an upper locking protrusion (34) lockingly inserted into the upper locking groove (820) on the upper surface portion and having a cutting blade formed on the lower surface portion;
An anti-corrosion coating layer is applied to the spring 606, and the coating material of the anti-corrosion coating layer is bisphenol A novolac-type glycidyl ether 19 wt%, isopropylamine 18 wt%, hafnium 14 wt%, organic magnesium 14 wt%, titanium oxide (TiO ₂ ) 9 wt%, aluminum oxide (Al ₂ O ₃ ) 10 wt%, polymer fluorochemical active 16 wt%, the coating thickness is formed to be 7㎛;
A shock absorbing part is installed around the lower end of the case 100, and the raw material content ratio of the shock absorbing part is rubber 60% by weight, dibutylthiourea 8% by weight, calcium stearate 6% by weight, carbon black 19% by weight, 3C (N-PHENYL-N'-ISOPROPYL-P-PHENYLENEDIAMINE) A multifunctional electric automatic return hydraulic tool, characterized in that it is made by mixing 3% by weight and 4% by weight of organic peroxide. delete delete delete

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