Head mount display support and head mount display

A head mount display, comprising:

• a head mount display support, comprising:
• a support body comprising two telescopic arms, wherein the two telescopic arms are overlapped with each other;
• a knob shaft configured to move into an overlapping part of the two telescopic arms in response to being pressed;
• an adjustment gear fixedly sleeved on the knob shaft, and configured to, in response to the knob shaft being pressed, be driven by the knob shaft to move to the overlapping part and mesh with the two telescopic arms, to drive the two telescopic arms to move towards or away from each other;
• and
• a self-locking mechanism comprising a rear housing, an elastic member, and a locking member;
• wherein the rear housing is arranged on a side of the overlapping part away from the knob shaft, an end of the elastic member is fixed to the rear housing and another end of the elastic member is connected with the locking member, and the locking member is configured to abut against an end of the knob shaft in response to the knob shaft being in a pressed state;
• wherein in response to the knob shaft retracting, the knob shaft is configured to drive the adjustment gear to move away from the overlapping part, and the elastic member is configured to drive the locking member to bounce into the overlapping part, to lock a relative position of the two telescopic arms;
• and
• a display module, arranged on the support body.

A head mount display support, comprising:

• a front housing,
• a rear housing connected to the front housing and defining a accommodating cavity with the front housing;
• two telescopic arms, wherein an end portion of each of the two telescopic arms are overlapped with each other to form an overlapping part, the overlapping part is received in the accommodating cavity;
• a knob shaft, penetrating the front housing from a side of the front housing away from the accommodating cavity to the accommodating cavity, wherein the knob shaft is capable of rotating;
• an adjustment gear sleeved on a part of the knob shaft in the accommodating cavity, and configured to rotate with the rotating of the knob shaft;
• an elastic member arranged in the accommodating cavity, wherein an end of the elastic member is connected on the rear housing;
• and
• a locking member arranged in the accommodating cavity and connected to another end of the elastic member;
• wherein in response to the knob shaft moving towards the overlapping part, the adjustment gear is configured to be driven by the knob shaft to move to the overlapping part and mesh with the two telescopic arms, to drive the two telescopic arms to move towards or away from each other;
• and
• in response to the knob shaft moving away from the overlapping part, the adjustment gear is driven by the knob shaft to move away from the overlapping part, and the elastic member is configured to drive the locking member to bounce into the overlapping part to lock a relative position of the two telescopic arms.