Hinged head-mounted display

1. A head-mounted display system, comprising:

an arm member having a distal end and a proximal end;

a display portion coupled to the distal end of the arm member;

a base member pivotally coupled to the proximal end of the arm member by a hinge, the hinge comprising a first hinge member that mates with a second hinge member,

the first hinge member comprising an interior wall structure defining a first passage extending therethrough and including a first pin housing, and

the second hinge member comprising an interior wall structure defining a second passage extending therethrough and including a second pin housing, wherein the second passage opens to the first passage;

a pin positioned in the first pin housing and in the second pin housing; and

a biasing member coupled to the first hinge member and to the second hinge member,

wherein the biasing member comprises a torsional spring, and

wherein the torsional spring is coupled about the pin such that the torsional spring rotationally biases the first hinge member and the second hinge member.

2. The head-mounted display system of claim 1 , further comprising a hinge cover that at least partially encloses the first hinge member and the second hinge member.

3. The head-mounted display system of claim 2 , wherein the hinge cover comprises a lip that overlaps with at least one of the base member and the arm member.

4. The head-mounted display system of claim 3 , wherein the torsional spring biases the hinge from a second position to a first position, and wherein the first passage opens to the second passage while the hinge is in the second position.

5. The head-mounted display system of claim 1 , further comprising:

one or more chambers within the base member, wherein the first passage of the first hinge member opens to the one or more chambers of the base member; and

a chamber within the arm member, wherein the second passage of the second hinge member opens to the chamber of the arm member.

6. A hinge assembly for a head-mounted display, comprising:

a first hinge member comprising a first pin housing;

a second hinge member comprising a second pin housing, wherein the second pin housing mates with the first pin housing; and

a pin positioned in the first pin housing and in the second pin housing such that the first hinge member and the second hinge member rotate about the pin,

wherein the first hinge member has an interior wall structure defining a first passage extending therethrough, and

wherein the second hinge member has an interior wall structure defining a second passage extending therethrough, the second passage opening to the first passage; and

a torsional spring that is positioned about the pin such that the torsional spring rotationally biases the first hinge member and the second hinge member to a first position.

7. A frame for a head-mounted display, comprising:

a base member comprising a first end and a second end;

a first arm member comprising a proximal end that is pivotally coupled to the first end of the base member;

a second arm member comprising a proximal end that is pivotally coupled to the second end of the base member;

a pair of hinges pivotally coupling the first arm member to the base member and the second arm member to the base member, respectively, each hinge comprising:

a first hinge member that mates with a second hinge member,

wherein the first hinge member comprises an interior wall structure defining a first passage extending therethrough and includes a first pin housing, and

wherein the second hinge member comprises an interior wall structure defining a second passage extending therethrough and includes a second pin housing, wherein the second passage opens to the first passage; and

a pin positioned in the first pin housing and in the second pin housing; and

a pair of biasing members that bias the pair of hinges to a first position, wherein each biasing member comprises a torsional spring that is coupled about the corresponding pin such that it rotationally biases the corresponding first hinge member and the corresponding second hinge member about the corresponding hinge.

8. The frame for the head-mounted display of claim 7 , further comprising a pair of hinge covers that at least partially enclose the pair of hinges.

9. The frame for the head-mounted display of claim 8 , wherein the pair of hinge covers each comprise a lip that overlaps with at least one of the base member, the first arm member, and the second arm member.

10. The frame for the head-mounted display of claim 9 , wherein the first passage opens to the second passage while the pair of hinges are in a second position, and wherein the pair of biasing members causes the pair of hinges to move from the second position to the first position.

11. The frame for the head-mounted display of claim 7 , further comprising one or more chambers within the base member, wherein the first passage of the first hinge member opens to the one or more chambers of the base member.

12. The hinge assembly of claim 6 , wherein the second pin housing comprises a first tab with a first bore and a second tab with a second bore, and wherein the first bore and the second bore receive the pin.

13. The hinge assembly of claim 6 , further comprising a hinge cover that at least partially encloses the first hinge member and the second hinge member.

14. The hinge assembly of claim 6 , wherein the first pin housing comprises a protrusion with a bore that receives the pin.

15. The hinge assembly of claim 14 , wherein the protrusion comprises a first portion and a second portion of different dimensions, and wherein the torsional spring is received over the first portion and fits adjacent to the second portion.

16. The hinge assembly of claim 6 , wherein the first hinge member fits at least partially within the second hinge member.