Support mechanism for a vehicle closure panel

• US 8,882,173 B2
• Filed: 03/12/2013
• Issued: 11/11/2014
• Est. Priority Date: 03/12/2013
• Status: Expired due to Fees

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Thorpe, Scott W., Nykiel, Henry J., Mehta, Himanshu H., Snede, Peter M.
• Primary Examiner(s): Dayoan, Glenn
• Assistant Examiner(s): Daniels, Jason S
• Application Number:
  US13/794,928
• Publication Number:
  US 20140259941A1
• Time in Patent Office: 609 Days
• Field of Search: 296/76, 296/92, 296/112, 296/146.1, 296/146.8, 296/146.11, 162/21, 162/25, 162/77, 162/80, 162/89, 163/03, 163/21, 163/34, 163/62, 493/86, 495/02
• US Class Current: 296/146.11
• CPC Class Codes: E05D 11/081 with both radial and axial friction, e.g. conical friction surfaces
• CPC Class Codes: E05D 13/12 with springs
• CPC Class Codes: E05D 3/18 with sliding pins or guides
• CPC Class Codes: E05F 1/10 for swinging wings , e.g. counterbalance
• CPC Class Codes: E05Y 2900/536 Hoods
• CPC Class Codes: E05Y 2900/546 Tailboards, tailgates or sideboards opening upwards
• CPC Class Codes: E05Y 2900/548 Trunk lids

Abstract

A support mechanism for a vehicle closure panel is provided. The support mechanism includes a connection rod and a counterbalancing device. The connection rod is configured to secure the closure panel in a second position and control the speed of the closure panel as it moves between a first position and a second position. The counter balancing device includes a connection rod base structure, at least one guide block, of a first material, at least one resistance member, of a second material, and at least one spring element. The guide block interacts with the resistance member. The interaction of the first material of the guide block and the second material of the resistance member creates a resistance force of variable force output to counterbalance the weight of the closure panel as the closure panel moves between the first position to the second position.

Claims

1. A support mechanism for a moveable closure panel of a vehicle body, the support mechanism comprising:

a connection rod assembly including a connection rod and a connection rod base structure, the connection rod operatively connected to the closure panel and the connection rod base structure;

a counterbalancing device including;

at least two guide blocks disposed within the connection rod base structure for movement therewith;

at least two resistance members defining a gap therebetween, such that each of the resistance members has a first end, a second end, a first side facing the gap, and a second side facing away from the gap, the resistance members being flexible along a length, such that the length is defined between the first end and the second end;

wherein the guide blocks and the connection rod base structure are moveable along the length of the resistance members, such that each of the guide blocks directly engages the second side of one of the resistance members creating an interaction therebetween; and

wherein the interaction between the guide blocks and the resistance members creates a resistance force sufficient to counterbalance the closure panel as the connection rod base structure moves along the length of the resistance members.

2. The support mechanism of claim 1 wherein the guide blocks are composed of a first material and the resistance members are composed of a second material, wherein the interaction between the first material of the guide blocks and the second material of the resistance members creates the resistance force sufficient to counterbalance the closure panel as the connection rod base structure and the guide blocks move along the length of and engage the resistance members.

3. The support mechanism of claim 2 wherein the first material is a frictional material and wherein the second material is one of steel and nylon.

4. The support mechanism of claim 1 wherein the closure panel is moveable with respect to the vehicle body between a first position and a second position, and wherein the connection rod assembly and the counterbalancing device reduce the speed of the closure panel as the closure panel moves between the first position and the second position.

5. The support mechanism of claim 1 wherein the counterbalancing device further includes at least one spring element biasingly positioned with respect to at least one of the resistance members, the at least one spring element defining at least one detent.

6. The support mechanism of claim 5 wherein the connection rod base structure and the guide blocks compress the at least one spring element as the connection rod base structure and the guide blocks move along the length of the resistance members and approach the at least one detent, such that the compressed spring element biases at least one of the resistance members to increase the resistance force as the connection rod base structure and the guide blocks approach the at least one detent.

7. The support mechanism of claim 5 wherein the at least one detent defines a predetermined location for the closure panel second position.

8. The support mechanism of claim 5 wherein the support mechanism includes at least two spring elements disposed within the gap between the at least two resistance members.

9. A vehicle comprising:

a vehicle body;

a closure panel operatively connected to the vehicle body with a hinge;

a connection rod assembly including a connection rod and a connection rod base structure, the connection rod operatively connected to the closure panel at a first attachment point and operatively connected to the connection rod base structure at a second attachment point, the connection rod base structure configured to move linearly with respect to the first attachment point;

a counterbalancing device including;

at least two guide blocks composed of a first material and fitted within the connection rod base structure for movement therewith;

at least two resistance members composed of a second material and defining a gap therebetween, such that each of the resistance members has a first side facing the gap and a second side facing away from the gap, the resistance members configured to interact with the guide blocks to create a resistance force sufficient to counterbalance the closure panel as the connection rod base structure moves linearly with respect to the first attachment point;

wherein the guide blocks and the connection rod base structure are moveable along the length of the resistance members, such that each of the guide blocks is directly engaged with the second side of one of the resistance members;

at least one spring element biasingly positioned with respect to the resistance members, the at least one spring element defining at least one detent configured to bias the resistance members against the guide blocks to sufficiently counterbalance the closure panel as the connection rod base structure and the guide blocks move along the length of the resistance members;

wherein the closure panel is pivotable with respect to the vehicle body between a first position and a second position, the connection rod and counterbalancing device being operable to hold the closure panel in the second position;

wherein the counterbalancing device is operable to reduce the speed of the closure panel, as the closure panel moves between the first position and a second position; and

wherein the speed at which the closure panel moves between the first position and the second position is defined by the interaction between the first material of the guide blocks and the second material of the resistance members.

10. The vehicle of claim 9 wherein each detent defines a predetermined location for the closure panel second position, wherein the closure panel second position is one of a full open position and a service position.

11. The vehicle of claim 9 wherein the at least one spring element is disposed within the gap between the at least two resistance members.

12. The vehicle of claim 9 wherein the closure panel is one of a vehicle hood, a vehicle trunk panel, a rear hatch closure panel, a tailgate, and a liftgate.

13. A vehicle comprising:

a vehicle body;

a closure panel operatively connected to the vehicle body with a hinge;

a connection rod assembly including a connection rod and a connection rod base structure, the connection rod operatively connected to the closure panel at a first attachment point and operatively connected to the connection rod base structure at a second attachment point, the connection rod base structure configured to move linearly with respect to the first attachment point;

a counterbalancing device including;

at least one guide block composed of a first material and coupled to the connection rod base structure for movement therewith;

at least two resistance members composed of a second material and defining a gap therebetween, such that each of the resistance members has a first side facing the gap and a second side facing away from the gap, the resistance members configured to interact with the at least one guide block to create a resistance force sufficient to counterbalance the closure panel as the connection rod base structure moves linearly with respect to the first attachment point;

wherein the at least one guide block and the connection rod base structure are moveable along the length of the at least two resistance members;

a guide track having a pair of opposing walls;

at least one spring element disposed within the guide track between one of the opposing walls and the second side of one of the at least two resistance members and biasingly positioned with respect to at least one of the resistance members, the at least one spring element defining at least one detent and configured to bias at least one of the resistance members against the at least one guide block to sufficiently counterbalance the closure panel as the connection rod base structure and the at least one guide block move along the length of the resistance members;

wherein the closure panel is pivotable with respect to the vehicle body between a first position and a second position, the connection rod and counterbalancing device being operable to hold the closure panel in the second position;

wherein the counterbalancing device is operable to reduce the speed of the closure panel, as the closure panel moves between the first position and a second position; and

wherein the speed at which the closure panel moves between the first position and the second position is defined by the interaction between the first material of the at least one guide block and the second material of the resistance members.

14. The vehicle of claim 13 wherein:

the at least one guide block is further defined as two guide blocks being coupled with and placed about the connection rod base structure, the guide blocks and the connection rod base structure being disposed within the gap defined between the at least two resistance members such that each of the guide blocks is directly engaged with the first side of one of the at least two resistance members.

15. The vehicle of claim 13 wherein each detent defines a predetermined location for the closure panel second position, wherein the closure panel second position is one of a full open position and a service position.

16. The vehicle of claim 13 wherein the closure panel is one of a vehicle hood, a vehicle trunk panel, a rear hatch closure panel, a tailgate, and a liftgate.