Interpupillary distance adjusting device

An interpupillary distance adjusting device, applied to VR glasses, wherein the VR glasses comprise a bracket body, a first mounting hole and a second mounting hole that penetrate through the bracket body and spaced apart from each other, a first lens module mounted in the first mounting hole, and a second lens module mounted in the second mounting hole, wherein a transverse aperture of the first mounting hole is greater than a diameter of the first lens module, and a transverse aperture of the second mounting hole is greater than a diameter of the second lens module;

• the interpupillary distance adjusting device comprises a driving module fixed to the bracket body and located between the first lens module and the second lens module, and the driving module is configured to drive the first lens module and the second lens module to move synchronously in a direction towards each other or in a direction away from each other to realize interpupillary distance adjustment;
• the driving module comprises a frame fixed to the bracket body, a driving unit fixed to one side of the frame, a first gear member rotatably disposed in the frame and in transmission connection with the driving unit, a second gear member rotatably disposed in the frame and engaged with the first gear member, a first rack engaged with the first gear member, and a second rack engaged with the second gear member, wherein an end of the first rack close to the first lens module is fixed to one side of the first lens module, and an end of the second rack close to the second lens module is fixed to one side of the second lens module;
• and the first rack and the second rack are parallel to each other;
• and the first gear member comprises a first pin bearing fixedly connected to an output end of the driving unit and the first gear fixed to the first pin bearing;
• the second gear member comprises a second pin bearing rotatably arranged in the frame and the second gear fixed to the second pin bearing, wherein the first gear has a tooth number less than the second gear.