KR102727126B1 - Apparatus for fixing tire for vehicle - Google Patents

Abstract

The present invention relates to a tire fastening device for a vehicle, comprising: a main body frame; a shaft member rotatably coupled to the main body frame; a plurality of sockets arranged on the same circumference centered on the shaft member and independently rotatably mounted on the main body frame; a nutrunner connected to the shaft member and rotating centered on the shaft member to selectively rotate any one of the plurality of sockets; and a cylinder member that linearly moves the nutrunner along the axial direction of the shaft member so as to move to a first position where the nutrunner is coupled to the socket and a second position where the nutrunner is separated from the socket, thereby obtaining the advantageous effects of simplifying the structure and reducing the cost.

Description

{APPARATUS FOR FIXING TIRE FOR VEHICLE}

The present invention relates to a tire fastening device for a vehicle, and more specifically, to a tire fastening device for a vehicle capable of simplifying the structure and reducing the cost.

Since the tire wheel must be firmly mounted on the hub of the vehicle to ensure the safety of the vehicle, the nuts (or bolts) that secure the tire wheel to the hub must be tightened accurately to the specified torque.

Generally, a tire fastening device that fastens a tire (tire wheel) to a vehicle body is configured to include a nut runner that tightens a nut using electricity or compressed air.

However, existing tire fastening devices have the problem of a complex structure and increased manufacturing cost because nutrunners must be individually provided for each axle number of hub bolts depending on the vehicle type, for example, 4 axles or 5 axles.

Accordingly, various studies have been conducted recently to simplify the structure of tire fastening devices and reduce costs, but they are still insufficient, and further development in this regard is required.

The purpose of the present invention is to provide a tire fastening device for a vehicle that can simplify the structure and reduce the cost.

In particular, the present invention aims to enable sequential driving of a plurality of sockets using a single nutrunner.

In addition, the present invention aims to contribute to miniaturization of the device and to improve space efficiency and design freedom.

According to a preferred embodiment of the present invention for achieving the above-described objects of the present invention, a tire fastening device for a vehicle includes a main body frame, a shaft member rotatably coupled to the main body frame, a plurality of sockets arranged on the same circumference centered on the shaft member and independently rotatably mounted on the main body frame, a nutrunner connected to the shaft member and rotating centered on the shaft member and selectively rotating any one of the plurality of sockets, and a cylinder member linearly moving the nutrunner along the axial direction of the shaft member so as to move to a first position where the nutrunner is fastened to the socket and a second position where the nutrunner is separated from the socket.

This is to simplify the structure of the tire fastening device and reduce cost.

That is, since nutrunners had to be individually prepared for each hub bolt axis according to the vehicle model, there was a problem of a complex structure and increased manufacturing costs.

However, the present invention can obtain the advantageous effects of simplifying the structure and reducing the cost by enabling a plurality of fastening members to be sequentially fastened using a single nutrunner.

Above all, since the present invention only requires one nutrunner, without the need to provide multiple nutrunners as many as the number of sockets, it is possible to manufacture the device in a more compact size, and obtain the advantageous effects of improving design freedom and space utilization.

The structure of the main body frame can be variously changed according to required conditions and design specifications. For example, the main body frame includes a first frame member on which a socket is mounted, and a second frame member arranged spaced apart from the first frame member, a shaft member is arranged between the first frame member and the second frame member, one end of the shaft member is rotatably coupled to the first frame member, and the other end of the shaft member is rotatably coupled to the second frame member.

More specifically, when the nutrunner moves to the first position, the socket is rotated by the nutrunner, and when the nutrunner moves to the second position, the nutrunner and the socket are separated, allowing rotation of the shaft member.

Preferably, the nutrunner is equipped with a guide bracket, and the guide bracket is configured to move linearly by a cylinder member and move the nutrunner to the first position and the second position.

In this way, by connecting the cylinder member and the nut runner via the guide bracket, the combined state of the cylinder member and the nut runner can be stably maintained, thereby obtaining the advantageous effect of improving the linear movement stability and reliability of the nut runner.

According to a preferred embodiment of the present invention, a tire fastening device for a vehicle includes a rotation guide member that guides rotation of a nutrunner with respect to a main body frame.

The rotation guide member can be formed into various structures capable of guiding the rotation of the nutrunner. For example, the rotation guide member is provided to be rotatable between the first frame member and the second frame member with the shaft member as the center, the cylinder member is mounted on the rotation guide member, and the rotation guide member rotates together as the shaft member rotates.

In this way, by having one side of the nutrunner along the radial direction of the shaft member supported by the shaft member and the other side of the nutrunner supported by the rotation guide member via the cylinder member, the arrangement of the nutrunner with respect to the shaft member can be maintained horizontally, so that the rotation of the nutrunner according to the rotation of the shaft member can be stably supported, and the advantageous effect of minimizing fastening errors due to the non-coaxial arrangement of the nutrunner and the socket can be obtained.

In particular, when the fastening member is fastened while the nutrunner and the socket are non-coaxially arranged, there is a problem that the fastening member may be incorrectly assembled or the fastening state by the fastening member may not be stably maintained, and it may be difficult to firmly maintain the fastening state of the tire during driving, which may cause a fatal accident. However, the present invention can obtain the advantageous effect of preventing incorrect assembly of the fastening member and improving safety and reliability by maintaining the arrangement of the nutrunner with respect to the shaft member horizontally when the nutrunner rotates.

According to a preferred embodiment of the present invention, a first guide groove is formed along a circumferential direction on an inner surface of a first frame member facing a second frame member, and a first guide protrusion that moves along the first guide groove is formed on one end of a rotational guide member.

In addition, a second guide groove is formed along the circumferential direction on the inner surface of the second frame member facing the first frame member, and a second guide protrusion that moves along the second guide groove is formed on the other end of the rotation guide member.

In this way, by forming the first guide protrusion and the second guide protrusion at both ends of the rotation guide member and forming the first guide groove and the second guide groove on the inner surfaces of the first frame member and the second frame member, the rotational stability of the rotation guide member can be further improved, and the advantageous effect of suppressing detachment and twisting of the rotation guide member can be obtained.

Additionally, a driving motor is provided in the second frame member to provide driving force for rotating the shaft member.

Preferably, the shaft member is formed with a receiving groove in which the drive shaft of the drive motor is received so as to be able to move linearly along the axial direction.

In this way, by forming a receiving groove inside the shaft member and allowing the drive shaft of the drive motor to be received in a linear manner inside the receiving groove, linear movement of the shaft member connected to the nutrunner can be permitted when the nutrunner moves linearly.

According to a preferred embodiment of the present invention, a tire fastening device for a vehicle is mounted on a first frame member and includes a gripping portion for selectively gripping a tire.

For example, the grip member includes a first clamp member, and a second clamp member that is arranged to face the first clamp member and cooperatively grips the tire with the first clamp member.

As described above, according to the present invention, it is possible to obtain the advantageous effects of simplifying the structure and reducing the cost.

In particular, according to the present invention, since a single nutrunner can be used in common to sequentially drive a plurality of sockets, the advantageous effects of simplifying the structure and reducing cost can be obtained.

In addition, according to the present invention, it is possible to contribute to miniaturization of the device and obtain advantageous effects of improving space efficiency and design freedom.

FIG. 1 and FIG. 2 are perspective views illustrating a tire fastening device for a vehicle according to the present invention.
FIG. 3 is a side view illustrating a tire fastening device for a vehicle according to the present invention.
FIGS. 4 and 5 are drawings for explaining the fastening structure of a nutrunner and a socket as a tire fastening device for a vehicle according to the present invention.
FIG. 6 is a drawing for explaining the rotation of a nut runner by a shaft member in a vehicle tire fastening device according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings, but the present invention is not limited or restricted by the embodiments. For reference, in this description, the same numbers refer to substantially the same elements, and the contents described in other drawings may be cited and described under this rule, and contents that are judged obvious to those skilled in the art or that are repeated may be omitted.

FIG. 1 and FIG. 2 are perspective views for explaining a vehicle tire fastening device according to the present invention, and FIG. 3 is a side view for explaining a vehicle tire fastening device according to the present invention. In addition, FIG. 4 and FIG. 5 are drawings for explaining a fastening structure of a nutrunner and a socket in a vehicle tire fastening device according to the present invention, and FIG. 6 is a drawing for explaining rotation of a nutrunner by a shaft member in a vehicle tire fastening device according to the present invention.

Referring to FIGS. 1 to 6, a vehicle tire fastening device (10) according to the present invention comprises: a main body frame (100); a shaft member (200) rotatably coupled to the main body frame (100); a plurality of sockets (310, 320, 330, 340, 350) that are arranged on the same circumference centered on the shaft member (200) and independently rotatably mounted on the main body frame (100); a nutrunner (400) that is connected to the shaft member (200) and rotates centered on the shaft member (200) and selectively rotates any one of the plurality of sockets (310, 320, 330, 340, 350); and a nutrunner (400) that moves to a first position where the nutrunner is coupled to the socket (310, 320, 330, 340, 350) and a second position where the nutrunner is separated from the socket (310, 320, 330, 340, 350). It includes a cylinder member (500) that moves a nut runner (400) linearly along the axial direction of a shaft member (200).

The vehicle tire fastening device (10) according to the present invention can be used to automatically assemble (mount) a tire (tire wheel) (T) onto a hub (H) of a vehicle body in an assembly line for assembling an automobile.

A shaft member (200), a socket (310, 320, 330, 340, 350), a nut runner (400), and a cylinder member (500) are mounted on the main body frame (100), and the structure of the main body frame (100) can be changed in various ways depending on required conditions and design specifications.

For example, the main body frame (100) includes a first frame member (110) on which a socket (310, 320, 330, 340, 350) is mounted, and a second frame member (120) that is positioned spaced apart from the first frame member (110).

According to another embodiment of the present invention, the main body frame may include three or more frame members or may be formed of only one frame member.

The shaft member (200) is provided to rotate the nut runner (400) along the circumferential direction in which a plurality of sockets (310, 320, 330, 340, 350) are arranged.

More specifically, the shaft member (200) is rotatably coupled to the main body frame (100), and the nut runner (400) is configured to rotate along a circumferential direction in which a plurality of sockets (310, 320, 330, 340, 350) are arranged centered on the shaft member (200).

For example, a shaft member (200) is positioned between a first frame member (110) and a second frame member (120), one end of the shaft member (200) is rotatably coupled to the first frame member (110), and the other end of the shaft member (200) is rotatably coupled to the second frame member (120).

The rotation of the shaft member (200) with respect to the first frame member (110) and the second frame member (120) can be supported by a conventional bearing member, and the present invention is not limited or restricted by the rotation support structure of the shaft member (200) with respect to the first frame member (110) and the second frame member (120).

On one side of the main body frame (100), a plurality of sockets (310, 320, 330, 340, 350) corresponding to the number of axles of the hub (H) of the body are provided.

More specifically, a plurality of sockets (310, 320, 330, 340, 350) are arranged on the same circumference centered on the shaft member (200) and are independently rotatably mounted on the first frame member (110).

For example, the first frame member (110) may be provided with five sockets (310, 320, 330, 340, 350) arranged on the same circumference to correspond to a five-axis hub (H) bolt (not shown).

At one end of the socket (310, 320, 330, 340, 350), a socket groove (not shown) is formed to receive a fastening member (B) (e.g., a nut or bolt) for fastening a tire (T) wheel to a hub (H) of a vehicle body, and at the other end of the socket (310, 320, 330, 340, 350), a fastening groove (not shown) to which an end of a nut runner (400) is spline-fastened is formed.

For reference, the fact that one end of the nutrunner (400) is splined to the other end of the socket (310, 320, 330, 340, 350) means that the nutrunner (400) and the socket (310, 320, 330, 340, 350) are connected so as to be rotatable (power-transmittable) as one unit.

The nut runner (400) is spline-connected to the other end of the socket (310, 320, 330, 340, 350) to rotate the socket (310, 320, 330, 340, 350).

More specifically, when the nutrunner (400) is fastened to the other end of the socket (310, 320, 330, 340, 350), the fastening member (B) accommodated in one end of the socket (310, 320, 330, 340, 350) can be fastened to the hub (H) of the vehicle body as the socket (310, 320, 330, 340, 350) rotates by the driving force of the nutrunner (400).

The nutrunner (400) can be configured to rotate the socket (310, 320, 330, 340, 350) using electricity or compressed air, and the present invention is not limited or restricted by the type and operating method of the nutrunner (400).

In addition, the nut runner (400) is connected to the shaft member (200) and configured to rotate around the shaft member (200). The nut runner (400) rotates around the shaft member (200) in response to the rotation of the shaft member (200), thereby being able to be sequentially arranged on the same line as a plurality of sockets (310, 320, 330, 340, 350).

Here, the nutrunner (400) being arranged on the same line as the socket (310, 320, 330, 340, 350) is defined as the nutrunner (400) and the socket (310, 320, 330, 340, 350) being arranged coaxially so as to enable spline fastening.

For example, in the first frame member (110), five sockets (310, 320, 330, 340, 350) can be arranged on the same circumference at 72-degree intervals, and by rotating the shaft member (200) by 72 degrees, the nut runner (400) can be sequentially arranged at a position where it can be fastened to each socket (310, 320, 330, 340, 350).

The cylinder member (500) is provided to move the nut runner (400) linearly along the axial direction of the shaft member (200), and the nut runner (400) can move to a first position where it is fastened to a socket (310, 320, 330, 340, 350) by the cylinder member (500) and a second position where it is separated from the socket (310, 320, 330, 340, 350).

More specifically, when the nutrunner (400) has moved to the first position, the socket (310, 320, 330, 340, 350) is rotated by the nutrunner (400) connected to the socket (310, 320, 330, 340, 350).

On the other hand, when the nutrunner (400) moves to the second position, the nutrunner (400) and the socket (310, 320, 330, 340, 350) are separated (power transmission is released), and rotation of the shaft member (200) (rotation of the nutrunner centered on the shaft member) is allowed.

The cylinder member (500) may be configured to move linearly by electric or pneumatic (or hydraulic) force, and the present invention is not limited or restricted by the type and structure of the cylinder member (500). According to another embodiment of the present invention, it is also possible to configure the nutrunner to move linearly by a lead screw or other conventional linear motion system that rotates by driving force from a driving motor.

Preferably, the nut runner (400) is equipped with a flat guide bracket (510), and the guide bracket (510) is configured to move linearly by the cylinder member (500) and move the nut runner (400) to the first position and the second position.

In this way, by connecting the cylinder member (500) and the nut runner (400) via the flat guide bracket (510), the connection state of the cylinder member (500) and the nut runner (400) can be stably maintained, thereby obtaining the advantageous effect of improving the linear movement stability and reliability of the nut runner (400).

In addition, the vehicle tire fastening device (10) includes a rotation guide member (600) that guides the rotation of the nut runner (400) with respect to the main body frame (100).

The rotation guide member (600) can be formed into various structures capable of guiding the rotation of the nut runner (400).

For example, the rotation guide member (600) is provided to be rotatable between the first frame member (110) and the second frame member (120) with the shaft member (200) as the center, and the cylinder member (500) is mounted on the rotation guide member (600), and is configured so that the rotation guide member (600) rotates together as the shaft member (200) rotates.

In this way, by having one side of the nutrunner (400) along the radial direction of the shaft member (200) supported by the shaft member (200) and the other side of the nutrunner (400) supported by the rotation guide member (600) via the cylinder member (500), the arrangement of the nutrunner (400) with respect to the shaft member (200) can be maintained horizontally, so that the rotation of the nutrunner (400) according to the rotation of the shaft member (200) can be stably supported, and the advantageous effect of minimizing fastening errors due to the non-coaxial arrangement of the nutrunner (400) and the socket (310, 320, 330, 340, 350) can be obtained.

In particular, when the fastening member (B) is fastened while the nutrunner (400) and the socket (310, 320, 330, 340, 350) are non-coaxially arranged, there is a problem that the fastening member (B) may be incorrectly assembled or the fastening state by the fastening member (B) may be difficult to stably maintain, and it may be difficult to firmly maintain the fastening state of the tire during driving, which may cause a fatal accident. However, the present invention can obtain the advantageous effect of preventing incorrect assembly of the fastening member (B) and improving safety and reliability by ensuring that the arrangement of the nutrunner (400) with respect to the shaft member (200) is maintained horizontally when the nutrunner (400) rotates.

Preferably, a first guide groove (112) is formed along the circumferential direction on the inner surface of the first frame member (110) facing the second frame member (120), and a first guide protrusion (610) that moves along the first guide groove (112) is formed on one end of the rotation guide member (600).

In addition, a second guide groove (122) is formed along the circumferential direction on the inner surface of the second frame member (120) facing the first frame member (110), and a second guide protrusion (620) that moves along the second guide groove (122) is formed on the other end of the rotation guide member (600).

In this way, by forming the first guide protrusion (610) and the second guide protrusion (620) at both ends of the rotation guide member (600) and forming the first guide groove (112) and the second guide groove (122) on the inner surfaces of the first frame member (110) and the second frame member (120), the rotational stability of the rotation guide member (600) can be further increased, and the advantageous effect of suppressing detachment and twisting of the rotation guide member (600) can be obtained.

According to another embodiment of the present invention, it is also possible to mount a rolling member such as a roller on the ends of the first guide protrusion and the second guide protrusion, and configure the first guide protrusion and the second guide protrusion to make rolling contact along the first guide groove and the second guide groove.

Additionally, a driving motor (700) that provides driving force to rotate a shaft member (200) may be provided in the main body frame (100).

For example, the drive motor (700) is mounted on the second frame member (120), and the drive shaft of the drive motor (700) passes through the second frame member (120) and is coupled to the shaft member (200).

Preferably, a receiving groove (210) is formed in the shaft member (200) to receive the drive shaft of the drive motor (700) so that it can move linearly along the axial direction.

In this way, by forming a receiving groove (210) inside the shaft member (200) and allowing the driving shaft of the driving motor (700) to be received in the receiving groove (210) so as to be able to move linearly, the linear movement of the shaft member (200) connected to the nut runner (400) can be permitted when the nut runner (400) moves linearly.

In addition, the vehicle tire fastening device (10) is mounted on the first frame member (110) and includes a grip portion (800) that selectively grips the tire (T).

The grip portion (800) can be formed into various structures capable of selectively gripping the tire (T), and the present invention is not limited or restricted by the type and structure of the grip portion (800).

For example, the grip portion (800) includes a first clamp member (810), and a second clamp member (820) that is positioned to face the first clamp member (810) and cooperatively grips the tire (T) with the first clamp member (810).

The first clamp member (810) and the second clamp member (820) can be configured to move in a direction in which they approach and separate from each other, and as the first clamp member (810) and the second clamp member (820) move in a direction in which they approach each other while the tire (T) is placed between the first clamp member (810) and the second clamp member (820), the tire (T) can be gripped between the first clamp member (810) and the second clamp member (820).

With this structure, referring to FIGS. 4 to 6, when the tire (T) is gripped at the end of the first frame member (110), the nut runner (400) can be linearly moved to the first position to be fastened with one (310) (e.g., the first socket) of the five sockets (310, 320, 330, 340, 350), and by rotating the socket (310) (first socket) with the nut runner (400), the fastening member (B) corresponding to the socket (310) (first socket) is fastened to the hub (H) of the vehicle body.

Thereafter, the nut runner (400) moves linearly to the second position, rotates the shaft member (200) clockwise (or counterclockwise) (e.g., rotates 72 degrees), and then moves the nut runner (400) linearly to the first position again, thereby connecting the nut runner (400) with another one (320) (e.g., the second socket) of the five sockets (310, 320, 330, 340, 350), and by rotating the socket (320) (second socket) with the nut runner (400), the connecting member (B) corresponding to the socket (320) (second socket) is connected to the hub (H) of the vehicle body.

In this manner, fastening members (B) corresponding to the remaining sockets (330, 340, 350) (e.g., the third socket, the fourth socket, and the fifth socket) are sequentially fastened to the hub (H) of the body.

As described above, while the present invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

10: Vehicle tire fastening device
100 : Body Frame
110: Absence of first frame
112: Guide Home 1
120: Absence of second frame
122: 2nd Guide Home
200 : Shaft member
210 : Acceptance Home
310,320,330,340,350 : Socket
400 : Nutrunner
500 : Cylinder member
510 : Guide Bracket
600 : Rotating guide member
610: 1st guide protrusion
620: 2nd guide protrusion
700 : Drive motor
800 : Grip
810: First clamp member
820: Second clamp member

Claims (11)

body frame;
A shaft member rotatably connected to the above main body frame;
A plurality of sockets arranged on the same circumference centered on the shaft member and independently rotatable and mounted on the main body frame;
A nutrunner connected to the shaft member, rotating around the shaft member and selectively rotating one of the plurality of sockets; and
A cylinder member for linearly moving the nutrunner along the axial direction of the shaft member so that the nutrunner moves to a first position where it is connected to the socket and a second position where it is separated from the socket;
The above main body frame,
A first frame member on which the above socket is mounted; and
Including a second frame member arranged spaced apart from the first frame member;
A vehicle tire fastening device, wherein one end of the shaft member is rotatably coupled to the first frame member, and the other end is rotatably coupled to the second frame member.
In the first paragraph,
When the nutrunner moves to the first position, the socket is rotated by the nutrunner,
A vehicle tire fastening device in which, when the nutrunner moves to the second position, the nutrunner and the socket are separated and rotation of the shaft member is permitted.
In the first paragraph,
A vehicle tire fastening device including a guide bracket coupled to the above nut runner and moving the nut runner to the first position and the second position by the cylinder member.
delete In the first paragraph,
It includes a rotation guide member that is rotatably provided between the first frame member and the second frame member with the shaft member as the center,
A vehicle tire fastening device in which the cylinder member is mounted on the rotary guide member and the rotary guide member rotates by the rotation of the shaft member.
In paragraph 5,
On the inner surface of the first frame member facing the second frame member, a first guide groove is formed along the circumferential direction,
A vehicle tire fastening device in which a first guide projection that moves along the first guide groove is formed on one end of the above-mentioned rotary guide member.
In Article 6,
A second guide groove is formed along the circumferential direction on the inner surface of the second frame member facing the first frame member.
A vehicle tire fastening device having a second guide projection formed on the other end of the above-mentioned rotary guide member, which moves along the above-mentioned second guide groove.
In the first paragraph,
A vehicle tire fastening device including a driving motor mounted on the second frame member and providing driving force for rotating the shaft member.
In Article 8,
A vehicle tire fastening device, wherein a receiving groove is formed in the shaft member so that the drive shaft of the drive motor can be received in a linear manner along the axial direction.
In the first paragraph,
A vehicle tire fastening device provided on the first frame member and including a grip portion that selectively grips a tire.
In Article 10,
The above grip part,
First clamp member; and
A second clamp member arranged to face the first clamp member and cooperatively grip the tire with the first clamp member;
A tire fastening device for a vehicle including:

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