JPH074105U - Tire changer - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a tire changing device capable of adapting to various tires having different diameters over a wide range. [Structure] A horizontal turntable (7) for mounting a tire wheel, a plurality of radial sliding grooves formed on the turntable (7), and fitting into these sliding grooves. Multiple clamp pieces (9, 9) that slide in the radial direction
A link (17, 19) having one end pivotably connected to these clamp pieces in a horizontal plane and the other end pivotably connected to a rotatable plate (20) in a horizontal plane, at least. In a tire changing device including a cylinder device (15) for radially driving one clamp piece, a clamp piece and a rotating plate are provided so that each link (17, 19) can rotate in a horizontal plane different from that of an adjacent link. It is characterized in that it is rotatably connected to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tire exchanging device for mounting or removing a tire on a tire wheel of an automobile or other vehicle, and more particularly to a horizontal turntable for mounting the tire wheel and a turntable formed on the turntable. A plurality of radial grooves, a plurality of clamp pieces that fit in these sliding grooves and slide in a radial direction, and one end of each of these clamp pieces is rotatably connected in a horizontal plane. The present invention relates to a tire exchanging device including a link, the other end of which is rotatably connected to a rotatable rotating plate in a horizontal plane, and a cylinder device that drives at least one clamp piece in a radial direction.

[0002]

[Prior art]

 Conventionally, this type of tire exchanging device has a machine base, a pillar provided on the machine base, a mounting head supported on the pillar via a swing arm and a spindle, and a tire wheel. And a turntable for fixing (see Japanese Utility Model Publication No. 5-6166), and a tire wheel mounted on a horizontal turntable is gripped and fixed by a plurality of clamp pieces arranged around the tire. , The tire wheel is rotated by rotating the turn wheel with the tip of the mounting head inserted between the tire wheel and the bead of the tire, and the tire is replaced.

[0003]

[Problems to be solved by the device]

 In such a conventional tire exchanging device, a cylinder device drives one or a pair of clamp pieces in the radial direction, and a rotary plate is rotated through a link of the clamp pieces to be driven and connected to the rotary plate. The other clamps are used to drive the remaining clamp pieces in the radial direction. In this case, since a plurality of links are pivotally attached to one surface of the rotating plate, adjacent links interfere with each other at a certain rotating angle (about 90 °) of the rotating plate, and the rotating angle of the rotating plate can be increased. could not. Therefore, depending on the device, it is difficult to adapt to a tire having a small diameter, and it is not possible to deal with various tire wheels having different diameters over a wide range. Therefore, there has been a problem that a tire changing device must be prepared for each of various tire wheels having different diameters over a wide range.

The present invention has been made to solve such a problem, and an object thereof is to provide a tire exchanging device which can be adapted to various tires having different diameters over a wide range. .

In order to achieve the above object, the present invention is directed to a horizontal turntable on which a tire wheel is placed, a plurality of radial sliding grooves formed on the turntable, and a sliding groove for these. A plurality of clamp pieces that fit in the moving groove and slide in the radial direction, and one end of each of these clamp pieces is rotatably connected in a horizontal plane, and the other end of each is connected to a rotatable rotary plate in a horizontal plane. In a tire exchanging device comprising a pivotally connected link and a cylinder device for driving at least one clamp piece in a radial direction, each of the links can pivot in a horizontal plane different from that of an adjacent link. And is rotatably connected to the clamp piece and the rotary plate.

[0006]

[Action]

 Since each link is rotatably connected to the clamp piece and the rotary plate so that the links can rotate on different horizontal planes from the adjacent links, the rotary plate can be placed so that the adjacent links are vertically overlapped with each other. By turning, it can be applied to tire wheels with extremely small diameters. Therefore, it is not necessary to prepare each tire changing device for various tire wheels having different diameters over a wide range.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the tire changing device shown in the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals.

In FIG. 1, reference numeral 1 denotes a tire exchanging device, which comprises a machine base 2, a support column 3, a swing arm 4, a spindle 5, a mounting head 6 and a horizontal turntable 7. As shown in FIG. 2, the horizontal turntable 7 is formed with four radial sliding grooves 8, 8, 8 ', 8', and each sliding groove 8, 8, 8 ', The hanging parts 10, 10, 10 ', 10' of the clamp pieces 9, 9, 9 ', 9'are fitted to the 8'. Each clamp piece 9, 9, 9 ', 9'clamps the rim of the tire wheel to grip and fix the tire on a horizontal turntable.

The swing arm 4 is rotatably supported by the column 3, and one end of the swing arm 4 supports the spindle 5 so as to be vertically movable. A mounting head 6 is provided at the tip of the spindle 5. The mounting head 6 is provided with a wide roller 6a and a protective roller 6b. When the tire is removed, the wide roller 6a is applied to the rim of the tire wheel and the tip of the protective roller 6b is hooked on the bead of the tire to mount the head. The tire is rotated by a turntable 7 which is rotated by a rotating means (not shown) (for example, see Japanese Patent Application No. 4-64088) while the application head 6 is stopped. When assembling the tire, the flange of the wide roller 6a is hooked on the bead of the tire, and the turntable 7 is rotated while the mounting head 6 is stopped to rotate the tire. In addition, 12 is a rotating shaft of the turntable 7.

As shown in FIGS. 1 and 3, the cylinder device 15 includes clamp pieces 9, 9 on the turntable 7 and hanging parts 10, 10 extending from the clamp pieces 9, 9 to the lower side of the turntable 7. And the pistons 13 and 13 ′ whose tip is rotatably fixed to one of the hanging parts 10 and 10 via the connecting rod 21, and the rear end of the other is rotatably fixed to the other via the connecting rod 22. The cylinders 14 and 14 'are formed. Reference numerals 11 and 11 denote springs that urge the clamp pieces 9 and 9 toward the center. The links 17 and 17 are pivotally fixed at one end to the hanging parts 10 and 10 of the pair of clamp pieces 9 and 9 to which the cylinder device 15 is connected, and the other ends of the links 17 and 17 are the surface of the rotary plate 20. It is fixed on the horizontal plane so that it can rotate. The links 19 and 19 are fixed to the back surface of the rotary plate 20 so that one ends of the links 19 and 19 can pivot in a horizontal plane, and the other ends of the links 10 and 10 'of the remaining clamp pieces 9'and 9' ( (Not shown) is pivotably fixed on a horizontal plane. In addition, 16 and 18 are auxiliary rotary plates assembled integrally with the rotary plate 20 to ensure the support of each link.

The pair of clamp pieces 9 and 9 facing each other are driven in the radial direction by the expansion and contraction of the cylinder device 15, and are fixed to the hanging parts 10 and 10 of these clamp pieces 9 and 9 so as to be rotatable in a horizontal plane. The rotary plate 20 is rotated by the links 17 and 17, and both ends of the rotary plate 20 and the pair of clamp pieces 9 ′ and 9 ′ are rotatably fixed in the horizontal plane. The other pair of clamp pieces 9'and 9'also move in the same manner by 19, 19. Thus, the rim of the tire is gripped from four sides by the four clamp pieces 9, 9, 9 ', 9'and fixed on the turntable 7.

When replacing a tire having a small diameter, the pistons 13 and 13 ′ of the cylinder device 15 are contracted to pull the clamp pieces 9 and 9 to the center, and the links 17 and 17, the rotary plate 7, and the link 19 are pulled. Clamp pieces 9 ′, 9 ′ are also pulled to the center via In this case, when the link 17 and the link 19 are on the same plane, the link 17 and the link 19 interfere with each other and the rotary plate 7 can be rotated only up to the position indicated by the solid line in FIG. In this embodiment, the link 17 fixed to the surface of the rotary plate 20 and the hanging parts 10, 10 of the clamp pieces 9, 9 pivotally fixed to the back surface of the rotary plate 20, the clamp piece 9 ', The link 19 fixed to the predetermined positions of the hanging parts 10 ′ and 10 ′ of the 9 ′ so as to be pivotable has the rotation planes thereof spaced by the thickness of the rotating plate 20, so that both links 17 are The link 17 'and the link 19' can be moved to the position of the chain double-dashed line shown in Fig. 5 without interference with the link 19 '. In this case, the rotary plate 7 can be rotated to the position 7 '. Therefore, the clamp pieces 9, 9 and 9 ', 9'can be extremely centered, and a small-diameter tire which cannot be gripped by the conventional device can be gripped and fixed.

In the above embodiment, the cylinder device is provided between the hanging parts of the opposing clamp pieces, but the same effect can be obtained even if the cylinder device is provided between the hanging parts of only one clamp piece and the machine base. It is clear that the effect can be obtained, and in that case, it is advantageous to use one cylinder in the cylinder device.

The number of clamp pieces can be appropriately selected, and at least one of the clamp pieces can be driven.

[0015]

[Effect of device]

 According to this invention, the links that transmit the driving force from the driven clamp pieces are connected to the clamp pieces and the rotating plate so that they can rotate in a horizontal plane different from the adjacent links, so that the links interfere with each other. It is possible to adapt to various tires having different diameters over a wide range by expanding and contracting the cylinder device.

[Brief description of drawings]

FIG. 1 is a schematic side view of a tire changing device showing an embodiment of the present invention.

2 is a plan view of the tire changing device of FIG. 1. FIG.

FIG. 3 is an enlarged plan view of an essential part showing a cylinder device and each link.

FIG. 4 is a side view of each link supported by a rotating plate.

FIG. 5 is an explanatory diagram showing a rotational relationship between a rotary plate and a link.

[Explanation of symbols]

 1 Tire changing device 2 Machine stand 3 Support post 4 Swing arm 5 Spindle 6 Mounting head 7 Turntable 8,8 'Sliding groove 9,9' Clamp piece 10,10 'Hanging part 13 Piston 14 Cylinder 15 Cylinder device 17,19 Link 20 rotating plate

Claims (1)

[Scope of utility model registration request] 1. A horizontal turntable for mounting a tire wheel, a plurality of radial sliding grooves formed on the turntable, and a radial sliding direction fitted into these sliding grooves. At least one moving plurality of clamp pieces, one end of each of these clamp pieces pivotably connected in a horizontal plane, and the other end of each of which is pivotally connected to a rotatable rotary plate in a horizontal plane; In a tire exchanging device including a cylinder device that drives a clamp piece in a radial direction, each of the links is pivotally connected to the clamp piece and the rotary plate so that the links can pivot on different horizontal planes from adjacent links. A tire changing device characterized by the above.