KR100380438B1 - spare tire carrier device for automotive vehicle - Google Patents

Abstract

The present invention relates to a spare tire carrier device for an automobile, wherein a roller assembly (30) and a driving plate (40) which are in an internal and external eccentric engagement relationship with each other are installed on a drive shaft (20) passing through a housing (10). In a spare tire carrier device of an automobile, wherein the spare tire (T) wire 50 can be wound or unwound on the roller assembly 30 by rotating the drive shaft 20, the drive plate (20) on the drive shaft 20. Cam plate 70 for rotating the eccentric 40 and the rotary frame 80 is integrally rotated with the drive shaft 20 is installed, the upper and lower support spring for holding the cam plate 70 to the rotary frame 80 (90,91) is provided so that the operator's operating force is transmitted to the cam plate 70 via the upper and lower support springs (90,91) in the case of excessive operating force, the upper and lower support springs (90, 91) the cam plate 70 does not rotate It is configured such that transmission of the operation force is cut off, it is to prevent damage to the spare wheel and the carrier device itself by transient operation.

Description

Spare tire carrier device for automotive vehicle

The present invention relates to a spare tire carrier device of a vehicle, and more particularly, to spare tires of a vehicle which can prevent abnormal compression of the spare tire to the vehicle body due to excessive operating force when storing the spare tire, or deterioration of durability of the carrier device. It relates to a carrier device.

In general, a vehicle is provided with at least one spare tire separately in preparation for damage to a tire generated during driving. Such a spare tire is usually stored in a rear trunk room of a vehicle in the case of a passenger car, and in the case of a truck Spare tires are suspended by means of a separate carrier.

As shown in FIG. 1, a carrier device for a spare tire for a van is formed in a substantially U-shaped cross-sectional shape and fixed to a lower portion of a vehicle body, and a drive shaft 20 installed through the housing 10. ), The roller assembly 30, the driving plate 40, and one end of which are installed on the drive shaft 20 in the housing 10 are fixed to the roller assembly 30, and the other end of the spare tire T. It comprises a wire 50 having an anchor plate 51 to be fixed to it, and a guide plate 60 for guiding the winding and unwinding of the wire 50 wrapped around the roller assembly 30 do.

An end portion of the drive shaft 20 is formed with an incision groove 21 to allow the operator to rotate the handle by inserting it, and an eccentric portion 22 is formed at a part of the portion located inside the housing 10 in a mounted state. Is formed.

The roller assembly 30 is coupled to each other so that the first and second roller plates 31 and 32 are wound between the two so as to form a winding groove of the wire 50, and the internal gear on the roller plate located on the dual drive plate 40 side. The gear plate 33 on which the in-driven gear 33a is formed is integrally coupled and mounted in a state capable of rotating on the drive shaft 20.

The drive plate 40 has a drive gear 41 (eccentrically engaged with the driven gear, which has fewer teeth than the internal gear) engaged with the driven gear 33a, and is integrally coupled with a control arm protruding forward. 42 is pulled by the spring 43 so that it is always in contact with the bottom surface of the housing 10, it is mounted on the eccentric portion 22 of the drive shaft 20.

Therefore, when the operator rotates the drive shaft 20 by inserting the handle into the incision groove 21, the drive gear 41 is driven by the eccentric portion 22 of the drive plate 40 in accordance with the idle movement of the driven gear 33a. By rotating, the roller assembly 30 is rotated on the drive shaft 20, and thus the worker winds up the wire 50 on the roller assembly 30 by rotating the drive shaft 20 clockwise or counterclockwise. The spare tire T can be pulled toward the body or lowered to the ground for use by unscrewing or loosening.

In addition, the winding state of the spare tire T is maintained by the internal / external eccentric engagement relationship between the drive gear 41 and the driven gear 33a and the anti-rotation action of the drive plate 40 by the control arm 42. Will be done.

However, in the spare tire carrier device having the above structure, the worker does not recognize that the winding of the spare tire (T) wire 50 has been made to an appropriate level, and the drive shaft 20 is rotated with excessive force (in the direction of winding the wire). In this case, the spare tire T may be damaged by contacting the bottom of the vehicle body with excessive pressure, and excessive stress may also occur between the drive gear 41 and the driven gear 33a, resulting in accumulation of fatigue and damage to teeth. Since it occurs, there was a problem that the durability of the carrier device itself is also reduced.

Accordingly, the present invention has been made to solve the above problems, when the operator's operation is excessive when raising the spare tire by rotating the drive shaft for storage, the handle operation force is not transmitted to the roller assembly, excessive winding of the wire An object of the present invention is to provide a spare tire carrier device for a vehicle which can prevent damage to the spare tire and the carrier device itself.

In order to achieve the above object, the present invention, the roller assembly and the drive plate which is in the internal and external eccentric engagement relationship with each other on the drive shaft passing through the housing is installed, the spare tire wire is wound around the roller assembly by rotating the drive shaft In a spare tire carrier device of a vehicle, which is capable of releasing or loosening, a cam plate for eccentrically rotating the drive plate and a rotary frame integrally rotated with the drive shaft are provided on the drive shaft, and the cam frame is held on the rotary frame. The lower support spring is provided so that the operator's operating force is transmitted to the cam plate via the upper and lower support springs. When the operation force is excessive, the upper and lower support springs rotate and the cam plate does not rotate. It is characterized in that the transfer is blocked.

1 is a perspective view showing a spare tire carrier device that is stored in the lower portion of the conventional vehicle body in a lift / lower manner.

Figure 2 is an exploded perspective view showing the configuration of a carrier device according to the present invention.

<Description of the symbols for the main parts of the drawings>

10 housing, 20 driving shaft, 21 cutting groove, 22 eccentric, 23 locking portion, 30 roller assembly, 31, 32 first and second roller plates, 33 gear plate, 33a driven gear, 40 : Driving plate, 41: driving gear, 42: control arm, 43: spring, 44: through hole, 50: wire, 51: wire plate, 60: guide plate, 70: cam plate, 71: through hole, 72: locking Plane, 73: circular arc, 74: cam, 80: rotating frame, 81: through hole, 82, 83: upper and lower arms, 82a, 83a: insertion hole, 90,91: upper and lower support springs, 90a, 91a : Bent end, 90b, 91b: protrusion.

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

As shown in FIG. 2, the housing 10 mounted on the lower surface of the vehicle body, the drive shaft 20 penetrated through the housing 10, and the wire 50 are wound on the drive shaft 20. The roller assembly 30, a drive plate 40 for rotating the roller assembly 30, a spring 43 for pulling the drive plate 40 to the bottom surface of the housing 10, and the roller assembly 30; The guide plate 60 is installed at the periphery of the) is provided as in the prior art.

That is, the roller assembly 30 is composed of a gear plate 33 having first and second roller plates 31 and 32 and a driven gear 33a which is an internal gear, and the driving plate 40 is the driven gear. In addition to the driving gear 41 is eccentrically coupled to (33a) is integrally coupled to the control arm 42 is formed to prevent the rotation in front of the side.

However, the eccentric portion 22 for eccentrically rotating the driving plate 40 is not formed in the drive shaft 20. On the other hand, a rectangular locking portion 23 is formed to integrally rotate the rotary frame 80 to be described later.

As shown in the present invention, the cam plate 70 for eccentrically rotating (orbiting) the drive plate 40 in the above structure, the rotary frame 80 which is integrally rotated with the drive shaft 20, The upper and lower support springs 90 and 91 are installed on the rotating frame 80 and elastically attached to the cam plate 70.

The cam plate 70 has a through hole 71 having a size that allows rotation only on the drive shaft 20 at a center thereof, and is formed to be curved inwardly with a locking surface 72 which is face-picked in a straight shape on an outer circumferential surface thereof. An arc surface 73 is formed, and a cam 74 is formed at an outer side of the through hole 71 on the side of the driving plate 40, and the cam 74 penetrates the driving plate 40. It is inscribed in the ball 44. That is, the through hole 44 of the drive plate 40 is formed to a diameter large enough to accommodate the cam 74, and the inner circumferential surface of the through hole 44 becomes the cam 74 operating surface.

The rotating frame 80 has a through hole 81 having the same shape in which the locking portion 23 of the driving shaft 20 is press-fitted in the center, and a pair of images extending vertically in the upper and lower portions, respectively. Lower arms 82 and 83 are formed, and insertion holes 82a and 83a are formed at the bent ends of the upper and lower arms 82 and 83, respectively.

The upper and lower support springs 90 and 91 are formed of bent ends 90a and 91a which are bent inward so that both ends thereof face each other, and the bent ends 90a and 91a are formed by the upper and lower arms 82. It is mounted to the rotary frame 80 by being inserted into the insertion hole (82a, 83a) of the, 83, the projection 90b, 91b is formed in the center toward the center of the shaft. That is, the upper and lower support spring in the assembled state When the cam plate 70 is positioned between the 90 and 91, the protrusions 90b and 91b are strongly adhered to the engaging surfaces 72 and the arc surfaces 73 of the cam plate 70 to hold the cam plates. The rotation of the 70 is prevented.

Now, the operation and effect of the present invention will be described. When the worker inserts the (operation) handle into the incision groove 21 to rotate the drive shaft 20 to wind the spare tire T into the carrier device, the engaging portion ( By the action of 23, the rotary frame 80 is rotated integrally with the drive shaft (20).

Accordingly, the upper and lower support springs 90 and 91 are also rotated integrally with the rotary frame 80, and the cam plates 70 held by the upper and lower support springs 90 and 91 are also rotated at the same time. )

At this time, the driving plate 40 is an orbital motion on the drive shaft 20 by the action of the cam 74 formed on the cam plate 70, accordingly the eccentrically matched drive gear 41 is driven gear By rotating the 33a, the roller assembly 30 is rotated so that the wire 50 can be wound.

On the other hand, even if the spare tire (T) is fully raised, when the operator does not recognize it properly and manipulates the handle with excessive force, the upper and lower support springs (90, 91) are deformed, the protrusions (90b, 91b) Is moved from the locking surface 72 to the arc surface 73 or from the arc surface 73 to the locking surface 72, so that the cam plate 70 is not rotated at the same time as the rotary frame 80, thereby driving plate 40 ) Cannot be eccentrically rotated, whereby the roller assembly 30 is not rotated so that the wire 50 is no longer wound.

That is, when the operating force is excessive, the transmission of the operating force in the upper and lower support springs (90, 91) is blocked, the operation of the components later to be disabled, the excessive winding of the wire 50 is impossible.

Therefore, even if the operator manipulates the steering wheel with a strong force, after the spare tire T is completely raised to the vehicle body side, the rotating frame 80 only rotates and no more excessive operating force is transmitted so that the gears Excessive magnitude of stress does not occur in the liver, so that the durability of the carrier device is improved, and the spare tire is also prevented from being pressed against the vehicle body with excessively strong force, thereby preventing damage.

In order to enable this operation, the upper and lower support springs 90 and 91 are normally wound, including their own loads of the spare tire T, the anchor plate 51 and the wire 50. The load applied to the upper and lower support springs (90,91) during operation is not deformed, and even if the spare tire (T) is fully raised, the handle is manipulated by the operator so that the elastic deformation is deformed when an excessive load is applied. Of course it has.

According to the present invention as described above, when the carrier device is operated by the operator with excessive force, it is possible to prevent the damage of the vehicle body or the spare tire due to excessive contact between the vehicle body and the spare tire by blocking the transmission of the operating force of course In addition, the carrier device may also prevent damage to internal parts such as gears due to excessive operating force applied, thereby improving durability.

Claims (4)

The roller assembly 30 and the drive plate 40 which are in an internal and external eccentric engagement relationship with each other are installed on the drive shaft 20 penetrating the housing 10, and the roller assembly 30 is rotated by rotating the drive shaft 20. In the spare tire carrier device of a vehicle that can be wound or wound on the spare tire (T) wire 50, A cam plate 70 for eccentrically rotating the drive plate 40 and a rotary frame 80 integrally rotated with the drive shaft 20 are installed in the drive shaft 20, and the cam plate ( 70 is provided with upper and lower support springs 90 and 91 to allow the operator's operating force to be transmitted to the cam plate 70 via the upper and lower support springs 90 and 91. In the case, the upper and lower support springs (90,91) is a spare tire carrier device for a vehicle, characterized in that the cam plate 70 is not rotated so that the transmission of the operating force is blocked. According to claim 1, wherein the cam plate 70 is formed on the outer circumferential surface of the engaging surface 72 and the arc surface 73 is repeatedly formed, the center through hole 71 is formed to the size that can only rotate on the drive shaft 20 When the cam 74 formed outside the through hole 71 acts on the inner circumferential surface of the through hole 44 of the drive plate 40, the drive plate 40 rotates eccentrically about the drive shaft 20. A spare tire carrier device for an automobile, characterized by being capable of idling). According to claim 1, Through hole 81 of the same shape as the rectangular engaging portion 23 formed on the drive shaft 20 in the center of the rotary frame 80 is formed, the combination of the rotary frame 80 Spare tire carrier device for a vehicle, characterized in that it can be rotated integrally with the drive shaft (20). The upper and lower support springs 90 and 91 of the upper and lower support springs 90 and 91a have insertion holes 82a and 90a and 91a formed in the upper and lower arms 82 and 83 of the rotary frame 80, respectively. Spare tire carrier of an automobile, wherein the cam plate 70 is held by the protrusions 90b and 91b inserted into and mounted at the center of the upper and lower support springs 90 and 91. Device.