Cup holder and method of manufacturing the same

1. A cup holder comprising:

a holder body having a holding groove opened at an upper portion of the holder body, wherein a container is configured to be inserted into the holding groove;

a guide integrally or monolithically formed in the holder body with an elastic adjustment body interposed therebetween, to protrude inward from the holding groove, the guide supporting a side of the container in a state in which the guide protrudes inward from the holding groove; and

the elastic adjustment body integrally formed in the guide and the holder body to provide an elastic restoring force in order for the guide to elastically protrude,

wherein the guide comprises:

a front portion curved and having a bent shape in a predetermined portion; and

a side portion integrally formed at each of both sides of the front portion,

wherein an upper end of the front portion is integrally connected to the holder body,

wherein the front portion of the guide covers an upper portion of the elastic adjustment body in an overmolding manner,

wherein the upper portion of the elastic adjustment body is in a strip shape to form a strip-shaped upper portion with a predetermined width,

wherein the strip-shaped upper portion of the elastic adjustment body is laminated and integrally and fixedly bonded to a central portion of the front portion of the guide and a front of the strip-shaped upper portion is exposed through a slit formed along the central portion of the front portion of the guide, and

wherein upper and lower ends of the guide are laminated and integrally and fixedly bonded to the elastic adjustment body, such that the elastic adjustment body is not exposed in the upper and lower ends of the guide.

2. The cup holder of claim 1 , wherein the guide is provided plurally and is integrally formed on an inner surface of the holding groove of the holder body, the guides being circumferentially disposed at predetermined intervals.

3. The cup holder of claim 1 , wherein the guide has a predetermined thickness, and is formed to have a shape that protrudes inward from the holding groove of the holder body when an external force is not applied thereto.

4. The cup holder of claim 1 , wherein an upper end of the guide is integrally connected to the holder body, a boundary between the upper end of the guide and the holder body is a hinge portion about which the guide rotates, and the elastic adjustment body is integrally connected between the guide and the holder body.

5. The cup holder of claim 1 , wherein

the elastic adjustment body is integrally connected, at a lower end thereof, to the holder body, and has a vertically elongated shape; and

an upper end of the elastic adjustment body is integrally connected to the holder body in a state in which the elastic adjustment body is overlapped with and fixed to the guide to be elongated in a vertical direction thereof.

6. The cup holder of claim 5 , wherein the holder body has a vertically elongated opening portion formed in a side thereof in which the guide is installed, and the elastic adjustment body, which is disposed in a vertically elongated manner, and the guide, which covers an upper portion of the elastic adjustment body in an overmolding manner, are located in the opening portion.

7. The cup holder of claim 6 , wherein a side end of a lower portion of the elastic adjustment body and a tip end of the side portion of the guide are disconnected from or integrally connected to the opening portion.

8. The cup holder of claim 5 , wherein the lower end of the elastic adjustment body is bonded and fixed to a lower surface of a base portion of the holder body, and the lower end, as a lower bonding portion of the elastic adjustment body, has an exposure portion, which protrudes upward through the base portion of the holder body and is exposed on a bottom of the holding groove.

9. The cup holder of claim 8 , wherein the exposure portion is formed in a circular ring shape on a bottom of the holding groove.

10. The cup holder of claim 4 , wherein the elastic adjustment body extends from the upper end of the guide via the hinge portion, as the boundary with the holder body, to a portion of the holder body, which is above the hinge portion, and is bonded thereto.

11. The cup holder of claim 1 , wherein the elastic adjustment body includes thermoplastic olefin (TPO) or Thermoplastic Elastomer (TPE) as an elastic material.

12. The cup holder of claim 1 , wherein the guide is entirely connected to the holder body through the elastic adjustment body therearound.