KR200315930Y1 - Jack - Google Patents

Abstract

The present invention relates to a work key, the body consisting of a plurality of link arms are interconnected; A main shaft connecting both ends of the main body, the main shaft extending outward thereof; Support means for supporting the main shaft at one end of the main body; And a manipulating means provided to rotate the main shaft at the other end of the main body, and a screw portion is formed on the main shaft, and the support means has a ball bearing in contact with the screw portion so that the main shaft can be easily rotated by the manipulating means. It is characterized by the intrinsic.

Description

Jackie {Jack}

The present invention relates to the operation of raising or lowering a certain height of the vehicle body from the ground when replacing a car tire or parts.

In general, automotive hand keys are divided into two types: hydraulic and gear.

Among these, the gear type key is disclosed in detail in the patent application No. 10-2001-0067294 of the applicant.

In the patent application No. 10-2001-0067294, the gear type key is configured to lift or lower the link structure having a diamond shape by using a spindle formed with a threaded portion.

The principle that the diamond-shaped link structure lifts the vehicle body is that a heavy gear can be lifted with a small force because the reduction ratio is formed by the screw part of the main shaft and the vehicle body load is distributed to some extent.

However, the conventional gear type key has a problem in that, when lifting a vehicle with a relatively large load, bending occurs because strong pressure is applied to the screw portion of the spindle and the screw portion of the spindle.

In addition, due to the warpage of the screw portion of the spindle and the portion in contact with the screw shaft portion, lifting occurs in the state in which the screw lead of the spindle and the screw lead are engaged with each other. There was a problem that the greater the force is required to lift the body.

The present invention has been devised to solve the above problems, to minimize the change in the contact ratio between the screw portion of the spindle and the portion in contact with it, and to significantly reduce the coefficient of friction of the screw portion of the spindle and the portion in contact with it, When lifting a car with a relatively large load, the work load can be adjusted according to the worker's will by adjusting the work load and minimizing the frictional force due to the direct load imposed to provide a working key that can be used by connecting a power tool and a reduction motor. Its purpose is to.

1 is an overall perspective view showing a working key according to the present invention,

Figure 2 is a front sectional view showing the support means, the operation means and the main axis of the operation key according to the present invention,

3 is an operation configuration diagram showing the operation of the jet gear, the mesh lever and the main shaft rotation shaft in the operation means of the operation key according to the present invention,

Figure 4 is a full perspective view showing an embodiment of the operation key according to the present invention,

5 is an exploded perspective view showing the operation means of the operation key according to the present invention,

6 is an operation state diagram showing the operation of the operation means in the embodiment of the operation key according to the present invention,

7 is an operational state diagram showing another operation of the operation means in the embodiment of the operation key according to the present invention.

Explanation of symbols on the main parts of the drawing

1, 101; Body 1a; 1st link arm

1b; Second link arm 2,102; Ground support plate

3,103; Body support plates 4,5,104,105; Coupling Pin

6,106; Spindle 7,107; Spindle insert

8,108; Ring cover 9; Ball bearing

10; Ball bearing retaining pins 11; Spindle support ring

12; Trist bearing 13,14,113,114; Bolts

15; Jet gear 16; Mech lever

17,117; Spindle rotation shaft 18,118; Spindle Rotating Handle

19; Pipe lever 20; Coupling ring

21; Spring plates 22,122; stopper

23; Connecting socket 24; Connecting pin

25,125; Connecting screw 26,126; handle

27,127; Main body support nut 115; Pinion Gear

116a; First match lever 116b; 2nd match lever

130; Shaft connector 131a; First elastic member

131b; Second elastic member 132; Operation lever

133a; Insertion groove 133b of the shaft connector; Through hole in shaft connector

According to an aspect of the present invention for achieving the above object, a plurality of link arms are connected to each other; A main shaft connecting both ends of the main body, the main shaft extending outward thereof; Support means for supporting the main shaft at one end of the main body; And a manipulating means provided to rotate the main shaft at the other end of the main body, and a screw portion is formed on the main shaft, and the support means has a ball bearing in contact with the screw portion so that the main shaft can be easily rotated by the manipulating means. It provides an action key that is inherent.

The operation means is provided with a jet gear fixed to an outer circumference of the main shaft, a main shaft rotation shaft for rotating the main shaft on one side of the jet gear, and coupled to a side surface of the main shaft rotation shaft to engage with the teeth of the jet gear. It is characterized by consisting of one mech lever.

An end portion of the main shaft rotation shaft is formed of a hinge structure to be bent and the main shaft rotation shaft is characterized in that coupled to the pipe lever fitted to facilitate its operation.

The other end of the main shaft is characterized in that it further comprises a connection socket for connecting the power tool, and a connecting pin for connecting the power tool and the connection socket in a locked state.

The support means is characterized in that it comprises a spindle insert formed in the groove for receiving the ball bearing therein, and ring covers formed on both ends of the spindle insert to prevent the ball bearing inherent in the spindle insert .

In another form of the operation means, as long as the pinion gear is fixed to the outer circumference of the main shaft, the shaft connector for rotating the pinion gear, and the side of the shaft connector is engaged with the teeth of the pinion gear. It is characterized by consisting of a pair of mesh lever.

One side of the pinion gear is characterized in that it is further provided with a stopper having a locking structure engaging with the teeth to prevent a sudden reverse rotation thereof.

Insertion grooves are formed in the upper end of the shaft connector, the insertion groove is characterized in that the main shaft rotation shaft for rotating the shaft connector is detachably inserted.

The side end of the shaft connector is formed with a through hole communicating with the insertion groove is characterized in that the storage can be stored in the state that the main shaft rotation shaft is fitted.

A pair of elastic members rotatably provided on the shaft connector to support the side of the mesh lever, and is provided through the shaft connector, the one side of the shaft connector is configured to be gripped for manual operation On the other side, it is characterized in that it further comprises an operating lever for selectively pressing the corresponding end of the match lever to engage or disengage from the pinion gear.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the operation key according to the present invention.

1 is an overall perspective view showing the operation key according to the present invention, Figure 2 is a front sectional view showing the support means, operation means and the main axis of the operation key according to the present invention, Figure 3 is in the operation means of the operation key according to the present invention It is an operation configuration diagram showing the operation of the jet gear, the mesh lever, and the main shaft rotation shaft.

The present invention, as shown in Figures 1 to 2, consists of the main body, the main shaft, the support means and the operating means.

First, the main body 1 is composed of a plurality of link arms, and forms a diamond shape as a whole.

The link arms each have a rotatable joint as a two-section link.

In addition, the support plate 2 for supporting the ground is coupled to the lower end of the link arm constituting the main body 1, and the support plate 3 for supporting the vehicle body is provided at the upper end of the link arm.

And a power transmission main shaft 6 is provided in the center of the main body 1, that is, the direction across the joint of each link arm.

The main shaft 6 has a threaded portion in its longitudinal direction.

In the embodiment, the support means is provided on one side of the main shaft 6, the operation means is provided on the other side of the main shaft (6), respectively.

First, the support means consists of an insert 7, a restraining pin 10, a ring cover 8, and the like.

The insert 7 is coupled to a portion where the joint portion and the main shaft 6 of the link arm provided on one side intersect.

The insert 7 is firmly fixed by the coupling bolt 13 penetrating the articulation portion of the link arm.

A groove is formed in the insert 7, and the groove is provided with a ball bearing 9 having a plurality of balls. The ball bearing 9 provided in the insert 7 is partially inserted into the threaded portion of the main shaft 6 when the main shaft 6 and the main shaft insert 7 are coupled to each other. 6) and the spindle insert 7 contact each other by ball, so that the frictional resistance in operation is reduced as much as possible.

The restraining pin 10 and the ring cover 8 block both sides of the insert 7 so that the balls of the ball bearing 9 provided in the insert 7 are not separated from the insert 7. Do not.

On the other hand, the operating means is provided on the other side of the main shaft (6) in the embodiment, specifically provided on the outer side of the joint portion of the link arm located on the other side in the main body (1).

Such a control means includes a try bearing 12, a main body support nut 27, a stopper 22, a jet gear 15, a spindle rotation shaft 17, a mesh lever 16, a spring plate 21, a coupling. It consists of a ring 20, a connecting pin 24 and a connecting socket (23).

First, the try bearing 12 and the main body support nut 27 are provided around the intersection of the link arm joint part and the main shaft 6 on the other side, and are attached to the coupling bolt 14 passing through the joint part of the link arm located on the other side. Is fixed by.

The thrust bearing 12 helps smooth rotation of the main shaft 6, and the body support nut 27 supports the main shaft 6 as well as preventing flow during operation of the thrust bearing 12. do.

The stopper 22 is provided at the outer circumference of the main body support nut 27 and has a hook shape as shown.

The jet gear 15 is provided on the other side of the thrust bearing 12 and is integrally fixed on the main shaft 6.

The jet gear 15 is formed to be inclined toward the inclined surface, such as the teeth.

In an embodiment, the main shaft rotation shaft 17 is provided on the other side of the jet gear 15. The main shaft rotation shaft 17 has a long rod shape so that a user can apply an artificial force.

In addition, the spindle rotation shaft 17 has a spindle rotation handle 18 so that the user can effectively give a force.

The main shaft rotation handle 18 can be extended in the perpendicular direction or folded in the original state with the pin as the axis from the main shaft rotation shaft 17.

The mech lever 16 is provided to be rotatable by a connecting screw 25 on the side of the main shaft rotation shaft 17 so as to directly transmit the rotational force of the main shaft rotation shaft 17.

In an embodiment, one mesh lever 16 is provided, the end of which meshes directly with the teeth of the jet gear 15.

On the other hand, the spring plate 21 and the coupling ring 20 is provided on the other side of the main shaft rotation shaft 17.

The spring plate 21 is provided between the coupling nut 20 and the main shaft rotation shaft 17.

In the embodiment, when the coupling nut 20 is moved to the other side, the spring plate 21 is relaxed, and when the spring plate 21 is relaxed, rotating the spindle shaft shaft 17 in the forward direction and the mesh lever 16 and The jet gear 15 meshes to allow normal operation. However, when the main shaft rotation shaft 17 is rotated in the reverse direction, the match lever 16 does not engage with the jet gear 15 and rotates.

On the other hand, the connecting pin 24 and the connecting socket 23 is provided on the other side of the coupling ring 20 is fixed integrally with the main shaft (6).

The connection socket 23 is connected to the socket (not shown) of the power tool.

The connection socket 23 has a polygonal shape such as a square or a pentagon, and the shape of the connection socket 23 can be designed according to the shape of a socket of a power tool such as an electric stove and a reduction motor. Connection pin 24 is to connect so that the connection socket 23 and the socket of the power tool is not separated from each other.

In the present invention, after inserting the socket of the power mechanism to the connecting socket 23 and fixed with the connecting pin 24, when the electric gear is rotated forward, the jet gear 15 is rotated in the forward direction, the links of the main body 1 are raised. On the other hand, when the electric motor is rotated in reverse, the electric motor is separated from the connecting socket 23.

Specific operation according to the present invention is as shown in Figs.

First, when the vehicle body is lifted, the operation of the present invention, as shown in FIG. It rotates, the main shaft 6 is rotated by the rotation of the jet gear (15).

As such, when the spindle 6 is rotated, the spindle insert 7 is in point contact due to the ball bearing 9 composed of the spindle 6 and the plurality of balls, and the spindle insert 7 is shown in FIGS. 1 and 2. The internal angle of the joint portions of the link arms of the main body 1 is increased while moving to the other side along the threaded portion (6).

For this reason, the vehicle body seated on the vehicle body support plate 3 of the main body 1 is lifted to a certain height from the ground.

In this way, when the vehicle body is lifted, the main shaft 6 and the main shaft insert 7 are in point contact with the balls of the ball bearings 9, thereby enabling smooth operation without a separate frictional resistance.

In addition, while the main shaft 6 rotates in the reverse direction of the operation direction due to the vehicle load while lifting the vehicle body, this is caused by contacting the stopper 22 with the jet gear 15 so that the end of the stopper 22 becomes the jet gear ( Since the reverse rotation of the main shaft 6 is prevented by being caught by the teeth of 15), the user can work safely.

On the other hand, as shown in FIG. 3, the lowering of the lifted body is performed by rotating the main shaft rotation shaft 17 in the (B) direction from the (A) direction so that the mech lever 16 rotates the jet gear 15. As the main shaft 6 is rotated by the rotation of the jet gear 15, the internal angle of the joint portions of the link arms of the main body 1 is gradually reduced.

For this reason, the vehicle body seated on the vehicle body support plate 3 of the main body 1 descends gradually to the ground.

In addition, using the pipe lever 19 shown in Figure 1, by the principle of the lever can operate the mech lever 16 with a small amount of force to lift the vehicle body, while lowering the vehicle body spindle handle ( It is also possible to lower the vehicle body quickly using 18).

In addition, when the power tool such as the electric range and the reduction motor is used to remove the tire, and rotates forward by inserting the connecting socket 23, the spindle 6 and the spindle insert (7) due to the ball (9) contact Since frictional resistance is reduced as much as possible, there is no load on the power tool.

4 is an overall perspective view showing an embodiment of the operation key according to the present invention, Figure 5 is an exploded perspective view showing the operation means of the operation key according to the present invention, Figure 6 is an operation means in an embodiment of the operation key according to the present invention 7 is an operational state diagram illustrating the operation of FIG. 7 is an operational state diagram illustrating another operation of the operation means in the embodiment of the operation key according to the present invention.

As shown, the subject innovation consists of a main body, a main shaft, a support means and an operation means. However, the main body, the main shaft, the support means are almost the same in configuration and operation of the embodiment of Figures 1 and 2, and thus detailed description thereof will be omitted.

4 to 6, the main configuration of the operation means of the present embodiment, the main body support nut 127, the stopper 122, the pinion gear 115, the shaft connector 130, the main shaft rotation shaft 117 And a first match lever 116a, a second match lever 116b, and the like.

First, the body support nut 127 is provided at a portion where the joint portion and the main shaft 106 of the second link arm 101b cross each other.

The body support nut 127 is fixed by the coupling bolt 114 penetrating the joint portion of the second link arm 101b.

The inside of the main body support nut 127 is provided with a try bearing (not shown) as in the embodiment of FIGS. 1 and 2. The main body support nut 127 supports the main shaft 106 to rotate stably while preventing the flow during the rotation of the try bearing.

The pinion gear 115 is provided on the other side of the main body support nut 127 and is integrally fixed on the main shaft 106. The pinion gear 115 has a tooth shape that is different from the teeth of the jet gear 15 shown in FIGS. 1 and 2.

The shaft connector 130 is provided on the other side of the pinion gear 115, the insertion groove (133a) is formed on the upper side, the through hole (133b) is formed on the side.

Insertion groove 133a of the shaft connector 130 is a main shaft rotation shaft 117 is detachably inserted, although not shown in the drawing, a pair of protrusions are formed inside the insertion groove 133a of the shaft connector 130. And the main shaft rotation shaft 117 is formed with a groove to be coupled to the projection inside the insertion groove (133a) is detachable is more easily and conveniently configured.

The through hole 133b of the shaft connector 130 communicates with the insertion groove 133a, and when the main shaft rotation shaft 117 is inserted into the through hole 133b, the main shaft rotation shaft 117 is fitted. You can keep the example.

Spindle shaft 117 is made of a long rod shape so that the user can artificially apply a force.

The main shaft rotation shaft 117 has a main shaft rotation handle 118 hinged so that the user can effectively transmit the force.

The main spindle rotation handle 118 may be extended to extend at right angles to the pin from the main spindle rotation shaft 117 or parallel to the main axis rotation shaft 117.

At the top of the main shaft rotating handle 118 is provided with a handle 126 of a soft material.

The handle 126 allows the user to grip the spindle turning handle 118 conveniently and stably.

On the other hand, the mesh levers 116a and 116b are provided in a pair so as to be rotatable on the side of the shaft connector 130 so that the rotational force of the main shaft rotation shaft 117 is directly transmitted to the pinion gear 115.

The match levers 116a and 116b are connected to the shaft connector 130 by the connection screw 125.

In addition, the mech levers 116a and 116b are supported by the elastic members 131a and 131b connected to the pins (not shown) provided in the shaft connector 130 so as to be pivotable.

The match levers 116a and 116b include a first match lever 116a and a second match lever 116b, and the first match lever 116a and the second match lever 116b are installed side by side so as to be symmetric to each other. do.

The first match lever 116a of the match levers 116a and 116b operates in engagement with the teeth of the pinion gear 115 that rotates in the forward direction, and the second match lever 116b of the pinion gear 115 that rotates in the reverse direction. It works in conjunction with teeth.

Selection of the meshing levers 116a and 116b meshing with the pinion gear 115 among the first and second meshing levers 116a and 116b is made possible by the operation lever 132.

The operation lever 132 is provided to penetrate through the shaft connector 130, and one side of the shaft connector 130 is configured to be gripped for manual operation, and the other side of the mesh levers 116a and 116b. By selectively pressing the corresponding end is to be engaged or disengaged from the pinion gear (115).

That is, the operation lever 132 directly contacts the upper ends of the matching levers 116a and 116b to operate one of the matching levers 116a and 116b.

The elastic members 131a and 131b are formed of the first elastic member 131a and the second elastic member 131b, and the first elastic member 131a elastically supports the side of the first match lever 116a. The second elastic member 131b elastically supports the side of the second match lever 116b.

On the other hand, the stopper 122 is connected to the outer periphery of the main body support nut 127 by a pin, and has a hook shape as shown in FIG.

As shown in the drawing, when the stopper 122 is folded to the pinion gear 115 to be caught by the teeth of the pinion gear 115, the stopper 122 does not rotate the reverse direction of the traveling direction.

That is, the stopper 122 has a locking structure that meshes with the teeth of the pinion gear 115 to prevent sudden reverse rotation of the pinion gear 115.

This is because the stopper 122 always supports the rear end of the tooth of the pinion gear 115 while the pinion gear 115 moves along the outer circumference of the pinion gear 115 when it is rotated.

In the present embodiment, like the embodiment of FIGS. 1 and 2, the spring plate and the coupling ring may be provided on the other side of the shaft connector 130.

In addition, the connecting pin and the connecting socket may be provided on the other side of the coupling ring to fit a power tool such as an electric stove and a reduction motor.

Operation of the embodiment according to the present invention is as shown in Figs.

When the vehicle body is lifted up, as shown in FIG. 6, when the first match lever 116a is pushed by the operation lever 132, the first match lever 116a is elastic to the first elastic member 131a. It is engaged with the teeth of the pinion gear 115 while being supported.

In this state, while the first match lever 116a is engaged with the teeth of the pinion gear 115, the user applies a force to the spindle rotation shaft 117 to rotate the shaft connector 130 in the forward direction, thereby the first match lever 116a rotates the pinion gear 115 in the same direction, and the main shaft 106 rotates in the forward direction by the rotation of the pinion gear 115.

When the spindle 106 rotates forward, the spindle insert 107 shown in FIG. 4 is point-contacted by a ball bearing (not shown) in which the threaded portion of the spindle 106 and a plurality of balls are embedded, and the spindle insert 107. ) Moves along the threaded portion of the main shaft 106, the internal angle of the joint portions of the first link arm 101a and the second link arm 101b of the main body 101 gradually increases.

Since the internal angles of the joint portions of the first link arm 101a and the second link arm 101b are increased, the main body 101 is raised.

On the other hand, the operation of lowering the vehicle body lifted to a certain height is shown in FIG. 7, when the second match lever 116b is pushed by the operation lever 132, the second match lever 116b is the elastic member 131. Is engaged with the teeth of the pinion gear 115 while being elastically supported.

In such a state, when the shaft connector 130 is rotated in the reverse direction by applying a force to the main shaft rotation shaft 117, the second match lever 116b rotates the pinion gear 115 in the reverse direction, and of the pinion gear 115 By rotation, the main shaft 106 is rotated in the reverse direction.

When the main shaft 106 is rotated in the reverse direction, the main shaft insert 107 shown in FIG. 4 moves along the threaded portion of the main shaft 106, while the first link arm 101a and the second link arm of the main body 101 are moved. The internal angle of the joint of 101b gradually decreases.

Since the internal angles of the joint portions of the first link arm 101a and the second link arm 101b become smaller, the main body 101 descends.

In addition, in this embodiment, when the operation lever 132 is positioned in the neutral state, the first elastic member 131a and the second elastic member 131b are respectively disposed on the first elastic member 131a and the second elastic member 131b. While being supported, it is spaced apart from the pinion gear 115 at the same time.

In this way, when both the first match lever 116a and the second match lever 116b are spaced apart from the pinion gear 115, the main shaft 106 does not rotate even if a user applies a force to the spindle rotation shaft 117. The raising or lowering operation of 101 is not made.

Since the present invention includes a plurality of balls inside the spindle insert, the coefficient of friction at the contact portion between the spindle and the spindle insert can be significantly reduced.

Because of this, even when lifting a car body with a relatively large load, there is an excellent effect of adjusting the work load to adjust the working speed at the will of the operator.

In addition, the present invention minimizes the frictional force due to the load imposed by the ball, there is an advantage that can be used without load by connecting an electric mechanism such as an electric range and a reduction motor.

In addition, the stopper prevents the gears from rotating at all times, thus preventing the risk of accidents when lifting or lowering the body, and when the user artificially exerts a force on the spindle rotation shaft, Since the spindle handle can be used, there is an advantage that the user can operate more conveniently.

Claims (10)

A main body having a plurality of link arms connected to each other; A main shaft connecting both ends of the main body, the main shaft extending outward thereof; Support means for supporting the main shaft at one end of the main body; And It is made of a control means provided to rotate the main shaft on the other end of the main body, The main shaft is formed with a screw portion, and the support means has a ball bearing in contact with the screw portion is built in the support means to facilitate the rotation of the main shaft. The method of claim 1, The operation means, A jet gear fixed to the outer circumference of the spindle; A main shaft rotation shaft for rotating the main shaft on one side of the jet gear; The operation key is coupled to the side of the main shaft rotation shaft made of a mesh lever is provided to engage with the teeth of the jet gear. The method of claim 2, The end of the main shaft rotation shaft is made of a hinge structure to be bent and the operation of the main shaft rotation shaft is coupled to the pipe lever is fitted to facilitate its operation. The method of claim 1, The other end of the spindle and the connecting socket to which the power tool is connected, And a connection pin further comprising a connection pin connecting the power tool and the connection socket to each other. The method of claim 1, The support means, A spindle insert having a groove accommodating the ball bearing therein; And a ring cover formed at both ends of the spindle insert to prevent separation of the ball bearing inherent in the spindle insert. The method of claim 1, The operation means, A pinion gear fixed to the outer periphery of the spindle, A shaft connector for rotating the pinion gear, And a pair of mesh levers coupled to a side surface of the shaft connector and engaged with teeth of the pinion gear. The method of claim 6, One side of the pinion gear is characterized in that the stopper is further provided with a stopper structure engaging with the teeth to prevent a sudden reverse rotation thereof. The method of claim 6, An insert groove is formed at an upper end of the shaft connector, and a main shaft rotation shaft for detachably inserting the shaft connector is inserted into the insertion groove. The method of claim 8, The side end of the shaft connector is formed with a through-hole communicating with the insertion groove is characterized in that the storage can be stored in the state that the main shaft rotation shaft is fitted. The method of claim 6, A pair of elastic members rotatably provided at the shaft connector so as to elastically support the side of the mesh lever; The shaft is provided through the connector, the one side of the shaft connector is configured to be gripped for manual operation, the other side to selectively press the corresponding end of the mesh lever to engage or disengage from the pinion gear A key further comprising a lever.