CN114035329A - Interpupillary distance adjustment mechanism and head-mounted display device - Google Patents
Interpupillary distance adjustment mechanism and head-mounted display device Download PDFInfo
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- CN114035329A CN114035329A CN202111398113.8A CN202111398113A CN114035329A CN 114035329 A CN114035329 A CN 114035329A CN 202111398113 A CN202111398113 A CN 202111398113A CN 114035329 A CN114035329 A CN 114035329A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/12—Adjusting pupillary distance of binocular pairs
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
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Abstract
The invention discloses a pupil distance adjusting mechanism and a head-mounted display device, wherein the pupil distance adjusting mechanism comprises: a cylinder body; the piston is connected in the cylinder body in a sliding mode and comprises a driving piston and a driven piston which are arranged at intervals, and the driven piston is used for being connected with a lens barrel of the head-mounted display device; the driving piece is connected with the driving piston in a driving way; a transmission cavity is formed between the driving piston and the driven piston, and fluid is filled in the transmission cavity. The technical scheme of the invention can reduce the risk of abnormal interpupillary distance adjusting function of the head-mounted display equipment, thereby prolonging the service life of the equipment.
Description
Technical Field
The invention relates to the technical field of head-mounted display equipment, in particular to a pupil distance adjusting mechanism and head-mounted display equipment.
Background
The pupil distance adjusting mechanism applied to these head-mounted display devices, such as, but not limited to, AR (Augmented Reality) glasses, VR (Virtual Reality) glasses, and MR (Mixed Reality) glasses, usually employs gear engagement transmission, and when the head-mounted display device is subjected to an impact, for example, falls to the ground and is subjected to a violent impact, the pupil distance adjusting mechanism may malfunction, or even malfunction, such as tooth skipping, gear deformation and meshing abnormality, and further the pupil distance adjusting function of the head-mounted display device may also malfunction.
Disclosure of Invention
The invention mainly aims to provide a pupil distance adjusting mechanism, which aims to reduce the risk of abnormal pupil distance adjusting function of head-mounted display equipment and further prolong the service life of the equipment.
In order to achieve the above object, the present invention provides a pupil distance adjusting mechanism for a head-mounted display device, the pupil distance adjusting mechanism comprising:
a cylinder body;
the piston is connected in the cylinder body in a sliding mode and comprises a driving piston and a driven piston which are arranged at intervals, and the driven piston is used for being connected with a lens barrel of the head-mounted display device; and
the driving piece is connected with the driving piston in a driving way;
a transmission cavity is formed between the driving piston and the driven piston, and fluid is filled in the transmission cavity.
Optionally, the cylinder body comprises a first cylinder body and a second cylinder body which are communicated with each other, the slave piston is arranged in the second cylinder body, the master piston is arranged in the first cylinder body and divides the first cylinder body into a first chamber and a second chamber, the first chamber is provided with a first communication hole, and the second chamber is provided with a second communication hole;
a partition plate is arranged in the second cylinder body, the driven piston comprises a first piston and a second piston which are respectively arranged at two sides of the partition plate, the second cylinder body is provided with a third communication hole communicated with the first communication hole and a fourth communication hole communicated with the second communication hole, the third communication hole is positioned at one side of the first piston far away from the partition plate, and the fourth communication hole is positioned at one side of the second piston close to the partition plate;
the first piston is connected with one lens barrel, and the second piston is connected with the other lens barrel.
Optionally, the second cylinder body is further provided with a first pressure relief through hole and a second pressure relief through hole, the first pressure relief through hole is located on one side, close to the partition, of the first piston, and the second pressure relief through hole is located on one side, far away from the partition, of the second piston.
Optionally, the first pressure relief through hole and the second pressure relief through hole are communicated.
Optionally, the interpupillary distance adjustment mechanism further includes a first joint pipe connected to the first pressure relief through hole, a second joint pipe connected to the second pressure relief through hole, and a first hose connected to the first joint pipe and the second joint pipe.
Optionally, the interpupillary distance adjusting mechanism further includes a third joint pipe connected to the fourth communication hole, the first piston slides in the second cylinder to have a first limit position and a second limit position, and in the first limit position, the first piston abuts against an outer wall surface of the second joint pipe; in the second limit position, the first piston abuts against an outer wall surface of the third joint pipe.
Optionally, the interpupillary distance adjusting mechanism further includes a fourth joint pipe connected to the second communication hole, and a second hose connecting the third joint pipe and the fourth joint pipe.
Optionally, the interpupillary distance adjusting mechanism further includes a fifth joint pipe connected to the third communication hole, a sixth joint pipe connected to the first communication hole, and a third hose connecting the fifth joint pipe and the sixth joint pipe.
Optionally, the second cylinder body is detachably connected to the second base.
Optionally, the second cylinder includes a second base and two second cylinder bodies respectively mounted at two ends of the second base, and the partition is disposed on the second base.
Optionally, the second base corresponds the second cylinder body is equipped with external screw thread portion, the second cylinder body corresponds external screw thread portion is equipped with the internal thread hole.
Optionally, the pupil distance adjusting mechanism further includes a first connecting rod connected to the first piston, the first connecting rod extends along a displacement direction of the first piston, and at least a portion of the first connecting rod is movably inserted into the second cylinder, and the first connecting rod is used to connect to the lens barrel.
Optionally, the pupil distance adjusting mechanism further includes a second connecting rod connected to the second piston, the second connecting rod extends along a displacement direction of the second piston and at least partially movably penetrates the second cylinder, and the second connecting rod is used to connect another lens barrel.
Optionally, the driving member includes a first driving rod connected to one end of the driving piston, and the first driving rod extends along a displacement direction of the driving piston, and at least a portion of the first driving rod is movably inserted into the first cylinder and exposed to the outside.
Optionally, the driving member further includes a second driving rod connected to the other end of the driving piston, and the second driving rod extends along the displacement direction of the driving piston, and at least a portion of the second driving rod is movably inserted into the first cylinder and exposed to the outside.
Optionally, the fluid is provided as a gas.
Optionally, the outer circumferential ring of the piston is provided with a sealing ring which is in sliding contact with the inner wall surface of the cylinder.
The invention further provides head-mounted display equipment which comprises the pupil distance adjusting mechanism.
According to the technical scheme, the displacement of the driving piston can be transmitted to the driven piston by utilizing the fluid in the transmission cavity, so that the lens barrel is driven to displace to realize the position adjustment of the lens barrel, and further the pupil distance adjustment of the head-mounted display equipment is realized. Because the pupil distance adjusting mechanism utilizes the cylinder, the piston and the fluid to realize the transmission of displacement, compared with gear meshing type mechanical transmission, if equipment falls to the ground and bears the action of violent impact, the damage or the failure of a transmission structure is not easy to occur, for example, the problem of abnormal pupil distance adjusting function caused by abnormal meshing due to tooth jumping, gear deformation and the like can not occur. It can be understood that as long as the cylinder or the piston is not damaged, for example, a crack occurs, and the fluid in the transmission cavity can be kept unchanged, the problem of abnormal function of the interpupillary distance adjusting mechanism can not occur, so that the risk of abnormal function of the interpupillary distance adjusting of the equipment is effectively reduced, and the service life of the equipment is further prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a pupil distance adjustment mechanism according to an embodiment of the present invention;
FIG. 2 is an exploded view of the components of the interpupillary distance adjustment mechanism of FIG. 1;
FIG. 3 is another schematic diagram of the pupil distance adjusting mechanism of FIG. 1;
fig. 4 is a schematic view of another structure of the interpupillary distance adjusting mechanism in fig. 1.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The pupil distance adjusting mechanism applied to the head-mounted display equipment at present usually adopts gear meshing transmission, and when the head-mounted display equipment suffers from impact action, for example, falls to the ground and suffers from violent impact action, the pupil distance adjusting mechanism can be abnormal in function, even fail in function, such as jump teeth, gear deformation and meshing abnormity, and further the pupil distance adjusting function of the head-mounted display equipment fails.
In view of this, the present invention provides a pupil distance adjusting mechanism for a head-mounted display device, and referring to fig. 1 and 2, in an embodiment of the present invention, the pupil distance adjusting mechanism includes:
a cylinder body 10;
the piston is slidably connected in the cylinder 10, and comprises a driving piston 210 and a driven piston 220 which are arranged at intervals, and the driven piston 220 is used for connecting a lens barrel of the head-mounted display device; and
the driving piece 30 is connected with the driving piston 210 in a driving way;
a transmission chamber is formed between the driving piston 210 and the driven piston 220, and the transmission chamber is filled with fluid.
In the technical scheme of the invention, the displacement of the driving piston 210 can be transmitted to the driven piston 220 by utilizing the fluid in the transmission cavity, so that the lens barrel is driven to displace to realize the position adjustment of the lens barrel, and further the pupil distance adjustment of the head-mounted display equipment is realized. Because the pupil distance adjusting mechanism utilizes the cylinder body 10, the piston and the fluid to realize the transmission of displacement, compared with the gear mesh type mechanical transmission, if the equipment falls to the ground and bears the action of violent impact, the damage or the failure of a transmission structure is not easy to occur, for example, the problem of abnormal pupil distance adjusting function caused by abnormal meshing due to tooth jumping, gear deformation and the like can not occur. It can be understood that, as long as the cylinder 10 or the piston is not damaged, for example, cracks occur, and the fluid in the transmission cavity can be kept unchanged, the problem of abnormal function of the interpupillary distance adjusting mechanism does not occur, so that the risk of abnormal function of the interpupillary distance adjusting of the device is effectively reduced, and the service life of the device is further prolonged. Without loss of generality, the normal human interpupillary distance is typically in the range of 57mm to 63mm, so the device interpupillary distance adjustment is at least in millimeters. The existing gear meshing transmission is difficult to accurately achieve millimeter or silk-meter-level micro-distance adjustment, and the machining precision of meshing teeth is required to be high if the micro-distance adjustment is to be achieved, so that the manufacturing cost of parts is high. Because the pupil distance adjusting mechanism utilizes the displacement of the fluid transfer driving piston 210, stepless adjustment can be realized, namely, the micro distance adjustment at the level of silk and meters can be easily realized, so that the use requirements of different users can be better met, and the market competitiveness of equipment is further improved.
It should be noted that the head-mounted display device usually has two lens barrels and corresponds to binocular settings of a user, and pupil distance adjustment of the device may be achieved by driving only one of the lens barrels or by driving both the lens barrels together. It should be further noted that the driving member 30 can be a mechanical driving member, such as a push rod for a user to push and pull, so as to drive the driving piston 210 to displace; or an electric driving member including a motor, an air cylinder or a hydraulic cylinder, and the electric driving member is driven to operate by an external operating power source, so as to drive the driving piston 210 to displace.
In this embodiment, the fluid is optionally provided as a gas. The gas is easy to prepare and fill in the interpupillary distance adjusting mechanism, and even if the gas leaks, the gas does not affect other parts of the equipment. The gas may be air in a natural state or an industrially produced inert gas. However, the design is not limited thereto, and in other embodiments, the fluid may be a liquid.
Referring to fig. 1 and 2, in the present embodiment, further, the cylinder 10 includes a first cylinder 110 and a second cylinder 120 which are communicated with each other, the slave piston 220 is disposed in the second cylinder 120, the master piston 210 is disposed in the first cylinder 110 and divides the first cylinder 110 into a first chamber 111 and a second chamber 112, the first chamber 111 is provided with a first communication hole 113, and the second chamber 112 is provided with a second communication hole 114; a partition plate 131 is arranged in the second cylinder 120, the slave piston 220 comprises a first piston 221 and a second piston 222 which are respectively arranged at two sides of the partition plate 131, the second cylinder 120 is provided with a third communication hole 121 communicated with the first communication hole 113 and a fourth communication hole 122 communicated with the second communication hole 114, the third communication hole 121 is positioned at one side of the first piston 221 far away from the partition plate 131, and the fourth communication hole 122 is positioned at one side of the second piston 222 close to the partition plate 131; the first piston 221 is connected to one barrel, and the second piston 222 is connected to the other barrel. The first piston 221 and the second piston 222 are used for driving the two lens barrels to displace respectively, and the third communication hole 121 and the fourth communication hole 122 are used for setting positions, so that the first piston 221 and the second piston 222 can move in opposite directions or away from each other, the two lens barrels can displace simultaneously under one-time driving operation of the driving part 30, and then a user can adjust the pupil distance of the equipment to an ideal state more quickly, conveniently, namely, the use convenience of the pupil distance adjusting function is improved. Specifically, for ease of understanding, the inner cavity of the second cylinder 120 may be divided into four parts for illustration, and the inner cavity includes a first inner cavity 125 located on the side of the first piston 221 away from the partition 131, a second inner cavity 126 located between the first piston 221 and the partition 131, a third inner cavity 127 located between the partition 131 and the second piston 222, and a fourth inner cavity 128 located on the side of the second piston 222 away from the partition 131; the transmission chambers include a first transmission chamber formed between the driving piston 210 and the first piston 221, and a second transmission chamber formed between the driving piston 210 and the second piston 222. The first transmission chamber includes a first chamber 111, a first communication hole 113, a third communication hole 121, and a first inner chamber 125, the second transmission chamber includes a second chamber 112, a second communication hole 114, a fourth communication hole 122, and a third inner chamber 127, the first transmission chamber and the second transmission chamber are filled with fluid, and when the driving piston 210 is not subjected to the driving force of the driving member 30, the fluid in the first transmission chamber and the second transmission chamber has a tendency to be stabilized at a preset pressure, which is generally set to be the same as the pressure after the fluid is filled. Therefore, when the driving piston 210 is displaced, for example, the driving piston 210 is displaced in the left direction in fig. 1, the volume of the first chamber 111 becomes smaller, the volume of the second chamber 112 becomes larger, and thus the fluid flows in the first transmission chamber and the second transmission chamber, the volume of the first inner chamber 125 becomes larger, the volume of the third inner chamber 127 becomes smaller, and thus the first piston 221 is displaced to the right side, and the second piston 222 is displaced to the left side, that is, the purpose of reducing the distance between the two lens barrels is achieved. In the same way, when the active piston 210 is displaced in the right direction in fig. 1, the purpose of expanding the space between the two lens barrels can be achieved.
Referring to fig. 1 and 2, in the present embodiment, further, the second cylinder 120 is further provided with a first pressure relief through hole 123 and a second pressure relief through hole 124, the first pressure relief through hole 123 is located on one side of the first piston 221 close to the partition 131, and the second pressure relief through hole 124 is located on one side of the second piston 222 far from the partition 131. Through the arrangement of the first pressure relief through hole 123 and the second pressure relief through hole 124, the second inner cavity 126 and the fourth inner cavity 128 are communicated with the air outside the second cylinder 120, so that when the volumes of the second inner cavity 126 and the fourth inner cavity 128 are changed, the pressure inside the second inner cavity 126 and the fourth inner cavity 128 cannot be obviously changed, and the problem that the pressure change obstructs the displacement of the first piston 221 and the second piston 222 is avoided. Thus, in the case that the driving member 30 is a mechanical transmission member requiring manual operation by a user, the requirement for the push-pull operation force on the driving member 30 can be reduced, the labor-saving effect is achieved, and a structure for preventing the active piston 210 from returning to the original position is not additionally arranged; in the case where the driving member 30 is an electric driving member, the driving member 30 does not need to continuously work to keep applying force to the driving piston 210, so that the driving piston 210 can be naturally stabilized at a certain position when the force of the driving member 30 is released, that is, the distance between the two lens barrels is naturally stabilized at a certain value. However, the design is not limited to this, in other embodiments, the second cylinder body may not have the first pressure relief through hole and the second pressure relief through hole, the driving member includes a first driving rod connected to one end of the driving piston, and a pin connected to the first driving rod, one end of the first driving rod movably penetrates through the first cylinder body and is exposed outside, and a plurality of pin holes are distributed at intervals along the length direction, and the pin is detachably connected to any one of the pin holes and abuts against the first cylinder body; by means of the matching of the pin and the pin hole, after the active piston is adjusted to an ideal position, the pin is abutted against the first cylinder body, the trend that the active piston restores to the original position can be counteracted, and therefore the active piston is stabilized at a certain position.
Referring to fig. 1 and 2, in the present embodiment, optionally, the first pressure relief through hole 123 and the second pressure relief through hole 124 are disposed in communication. So, can make second inner chamber 126 and third inner chamber 127 be linked together, the exchange takes place for gas in it and outside air, can avoid long-term gas exchange back, and first pressure release through-hole 123 and second pressure release through-hole 124 are blockked up by the impurity in the air, lead to the problem that the gas circulation is not smooth and easy, or impurity adsorbs on the chamber wall of second inner chamber 126 and third inner chamber 127 in the air, lead to the problem that first piston 221 and second piston 222 displacement are not smooth and easy. Therefore, the working stability of the pupil distance adjusting mechanism can be improved, and the service life of the pupil distance adjusting mechanism is prolonged. In addition, so set up, when making first piston 221 and second piston 222 displacement, the both sides of piston can receive pulling force effect and thrust effect simultaneously to make the synchronous displacement of first piston 221 and second piston 222 can be more smooth-going and stable, and then improve user experience.
Referring to fig. 1, in the present embodiment, the interpupillary distance adjusting mechanism further includes a first joint pipe 41 connected to the first pressure relief through hole 123, a second joint pipe 42 connected to the second pressure relief through hole 124, and a first hose 43 connecting the first joint pipe 41 and the second joint pipe 42. Thus, the first hose 43 is matched with the first joint pipe 41 and the second joint pipe 42, so that the installation and operation of workers can be facilitated to realize the communication between the first pressure relief through hole 123 and the second pressure relief through hole 124, and the assembly efficiency of the pupil distance adjusting mechanism is improved. However, the design is not limited to this, in other embodiments, the pupil distance adjusting mechanism may further include a first hose, one end of the first hose is inserted and adhered to the first pressure relief through hole, and the other end is inserted and adhered to the second pressure relief through hole.
Referring to fig. 1 and 2, in the present embodiment, optionally, the second cylinder 120 includes a second base 130 and two second cylinder bodies 140 respectively mounted at two ends of the second base 130, and the partition 131 is disposed on the second base 130. Thus, the second cylinder 120 is divided into two second cylinder bodies 140 and one second base 130, so that the structure of each part can be simplified, thereby facilitating the production and manufacture of the parts and further reducing the overall manufacturing cost of the second cylinder 120.
In this embodiment, optionally, the second cylinder body 140 is detachably connected to the second base 130. Thus, the second cylinder body 140 is conveniently disassembled and assembled to inspect, repair or replace the first piston 221 and the second piston 222, thereby reducing the post-maintenance cost of the apparatus.
Referring to fig. 1 and 2, in order to simplify the mounting structure between the second mount 130 and the second cylinder body 140, in the present embodiment, optionally, the second mount 130 is provided with an external threaded part 132 corresponding to the second cylinder body 140, and the second cylinder body 140 is provided with an internal threaded hole 141 corresponding to the external threaded part 132. Therefore, the mounting structure can be simplified, and the mounting of workers can be facilitated, so that the production efficiency of equipment is improved. However, the design is not limited to this, in other embodiments, a threaded hole may be formed in the side wall of the second base, one end of the second cylinder body is sleeved on the side wall of the second base, an abdicating through hole is formed in the side wall corresponding to the threaded hole, and the pupil distance adjusting mechanism further includes a screw capable of penetrating through the abdicating through hole and being connected with the threaded hole.
Referring to fig. 3 and 4, fig. 3 is another structural schematic diagram of the interpupillary distance adjusting mechanism of fig. 1, when the first piston 221 is in the first extreme position; fig. 4 is a further schematic diagram of the pupil distance adjustment mechanism of fig. 1, when the first piston 221 is in the second extreme position. In the present embodiment, the interpupillary distance adjusting mechanism further includes a third joint pipe 51 connected to the fourth communication hole 122, the first piston 221 slides in the second cylinder 120 to have a first limit position and a second limit position, and in the first limit position, the first piston 221 abuts against the outer wall surface of the second joint pipe 42; in the second limit position, the first piston 221 abuts against the outer wall surface of the third joint pipe 51. The first joint pipe 41 and the third joint pipe 51 are used for limiting the displacement of the first piston 221, namely limiting the displacement limit position of the lens barrel, so that the pupil distance of the device can be adjusted only within a certain range. So, can simplify interpupillary distance adjustment mechanism's structure, need not to additionally set up limit structure again to reduce the manufacturing cost of equipment. In addition, the two limit structures of the first joint pipe 41 and the third joint pipe 51 are arranged on the same second cylinder body 140, so that the accumulation of dimensional tolerance can be reduced, the relative position precision of the two limit structures is improved, namely, the limit position precision of the interpupillary distance adjusting mechanism is improved, and the market competitiveness of the equipment is improved.
Referring to fig. 1 and 2, in the present embodiment, the interpupillary distance adjusting mechanism further includes a fourth joint pipe 52 connected to the second communication hole 114, and a second hose 53 connecting the third joint pipe 51 and the fourth joint pipe 52. With the second hose 53 fitted to the third joint pipe 51 and the fourth joint pipe 52, the worker can easily perform the installation work to communicate between the second communication hole 114 and the fourth communication hole 122, thereby improving the assembling efficiency of the interpupillary distance adjusting mechanism. However, the design is not limited to this, in other embodiments, the pupil distance adjusting mechanism may further include a second hose, one end of the second hose is inserted and adhered to the second communication hole, and the other end is inserted and adhered to the fourth communication hole.
Referring to fig. 1 and 2, in the present embodiment, the interpupillary distance adjusting mechanism further includes a fifth joint pipe 61 connecting the third communication hole 121, a sixth joint pipe 62 connecting the first communication hole 113, and a third hose 63 connecting the fifth joint pipe 61 and the sixth joint pipe 62. By using the third hose 63 to fit the fifth joint pipe 61 and the sixth joint pipe 62, the worker can easily perform the installation operation to communicate the first communication hole 113 with the third communication hole 121, thereby improving the assembling efficiency of the interpupillary distance adjusting mechanism. Moreover, it can be understood that the head-mounted display device has a market popularity trend of a miniaturized design, so that the internal space of the device is generally limited, and the second hose 53 and the third hose 63 enable the relative position relationship of the first cylinder 110 and the second cylinder 120 to be adjusted according to the arrangement requirement, thereby improving the degree of freedom of arrangement of the first cylinder 110 and the second cylinder 120 in the device, facilitating the miniaturized design of the device, and further improving the market competitiveness of the device. However, the design is not limited to this, in other embodiments, the pupil distance adjusting mechanism may further include a third flexible tube, one end of the third flexible tube is inserted and adhered to the first communication hole, and the other end is inserted and adhered to the third communication hole.
Referring to fig. 1 and 2, in the present embodiment, the interpupillary distance adjusting mechanism further includes a first connecting rod 71 connected to the first piston 221, the first connecting rod 71 extends along the displacement direction of the first piston 221 and at least partially movably penetrates through the second cylinder 120, and the first connecting rod 71 is used to connect to a lens barrel. Thus, the connection structure between the first piston 221 and the lens barrel can be ensured not to affect the air tightness of the transmission cavity when following the displacement of the first piston 221, and the connection structure can be simplified, so that the manufacturing cost of the device is reduced.
Referring to fig. 1 and 2, in order to improve the air tightness of the first transmission cavity, in this embodiment, optionally, a first yielding hole 142 is formed in an end of the second cylinder 120 corresponding to the first connecting rod 71, the interpupillary distance adjusting mechanism further includes a first sealing ring 72 disposed in the first yielding hole 142, and an end of the first connecting rod 71 away from the first piston 221 penetrates through the first sealing ring 72 and is exposed outside on the second cylinder 120.
Referring to fig. 1 and 2, in order to further improve the air tightness of the first transmission cavity, in this embodiment, optionally, a first annular groove 223 is provided on a side surface of the first piston 221, the interpupillary distance adjusting mechanism further includes a second sealing ring 73 provided in the first annular groove 223, and the second sealing ring 73 is in sliding contact with an inner wall surface of the second cylinder 120.
Referring to fig. 1 and 2, in the present embodiment, the pupil distance adjusting mechanism further includes a second connecting rod 74 connected to the second piston 222, the second connecting rod 74 extends along the displacement direction of the second piston 222 and at least partially movably penetrates through the second cylinder 120, and the second connecting rod 74 is used to connect to another lens barrel. Therefore, the connecting structure between the second piston 222 and the lens barrel can be ensured not to influence the air tightness of the transmission cavity when the connecting structure follows the displacement of the second piston 222, and the connecting structure can be simplified, so that the manufacturing cost of the equipment is reduced.
Referring to fig. 1 and 2, in order to improve the air tightness of the second transmission cavity, in this embodiment, optionally, the other end of the second cylinder 120 is provided with a second yielding hole 143 corresponding to the second connecting rod 74, the interpupillary distance adjusting mechanism further includes a third sealing ring 75 disposed in the second yielding hole 143, and one end of the second connecting rod 74, which is far away from the second piston 222, penetrates through the third sealing ring 75 and is exposed on the second cylinder 120.
Referring to fig. 1 and 2, in order to further improve the air tightness of the second transmission cavity, in this embodiment, optionally, a second annular groove 224 is provided on a side surface of the second piston 222, the interpupillary distance adjusting mechanism further includes a fourth sealing ring 76 provided in the second annular groove 224, and the fourth sealing ring 76 is in sliding contact with an inner wall surface of the second cylinder 120.
Referring to fig. 1 and 2, in the present embodiment, the driving member 30 further includes a first driving rod 31 connected to one end of the driving piston 210, and the first driving rod 31 extends along the displacement direction of the driving piston 210 and at least partially movably penetrates through the first cylinder 110 and is exposed. Thus, the exposed portion of the first driving rod 31 is convenient for the user to perform the push-pull operation, thereby applying the push-pull acting force to the active piston 210; or the driving member 30 further includes a first linear motor drivingly connected to the first driving rod 31, and the exposed portion of the first driving rod 31 is mounted on the first linear motor, so as to facilitate assembly by workers and improve the production efficiency of the equipment.
Referring to fig. 1 and 2, in order to improve the air tightness of the first transmission cavity, in this embodiment, further, a third yielding hole 115 is disposed at one end of the first cylinder 110 corresponding to the first driving rod 31, the interpupillary distance adjusting mechanism further includes a fifth sealing ring 77 disposed in the third yielding hole 115, and one end of the first driving rod 31, which is far away from the driving piston 210, penetrates through the fifth sealing ring 77 and is exposed.
Referring to fig. 1 and 2, in the present embodiment, the driving member 30 further includes a second driving rod 32 connected to the other end of the driving piston 210, and the second driving rod 32 extends along the displacement direction of the driving piston 210 and at least partially movably penetrates through the first cylinder 110 and is exposed. So, make this interpupillary distance adjustment mechanism can be applicable to the different space condition of arranging, promptly, be applicable to the head-mounted display device of different product models, be favorable to this interpupillary distance adjustment mechanism's platform design.
Referring to fig. 1 and 2, in order to improve the air tightness of the second transmission cavity, in this embodiment, further, the other end of the first cylinder 110 is provided with a fourth yielding hole 116 corresponding to the second driving rod 32, the interpupillary distance adjusting mechanism further includes a sixth sealing ring 78 disposed in the fourth yielding hole 116, and one end of the second driving rod 32, which is far away from the driving piston 210, penetrates through the sixth sealing ring 78 and is exposed.
Referring to fig. 1 and 2, in the present embodiment, a third annular groove 211 is formed around the outer circumference of the driving piston 210, the pupil distance adjusting mechanism further includes a seventh seal ring 79 provided in the third annular groove 211, and the seventh seal ring 79 is in sliding contact with the inner wall surface of the first cylinder 110. Thus, by improving the air tightness of the driving piston 210, gas exchange between the first transmission cavity and the second transmission cavity can be avoided, and the precision of the pupil distance adjusting position of the pupil distance adjusting mechanism is improved.
Referring to fig. 1 and 2, in order to facilitate the installation of the active piston 210 in the first cylinder block 110, in the present embodiment, further, the first cylinder block 110 includes a first cylinder body 117 and a first base 118 connected to the first cylinder body 117, an outer thread is disposed on an outer circumference of the first base 118, and an inner thread adapted to the outer thread is disposed on an inner wall of the first cylinder body 117; the third yielding hole 115 is disposed on the first base 118, and the fourth yielding hole 116 is disposed on the first cylinder body 117.
The present invention further provides a head-mounted display device, including the aforementioned pupil distance adjusting mechanism, where the specific structure of the pupil distance adjusting mechanism refers to the foregoing embodiments, and since the head-mounted display device adopts all technical solutions of all the foregoing embodiments, the head-mounted display device at least has all beneficial effects brought by the technical solutions of the foregoing embodiments, and details are not repeated here.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A interpupillary distance adjustment mechanism for a head-mounted display device, the interpupillary distance adjustment mechanism comprising:
a cylinder body;
the piston is connected in the cylinder body in a sliding mode and comprises a driving piston and a driven piston which are arranged at intervals, and the driven piston is used for being connected with a lens barrel of the head-mounted display device; and
the driving piece is connected with the driving piston in a driving way;
a transmission cavity is formed between the driving piston and the driven piston, and fluid is filled in the transmission cavity.
2. The interpupillary distance adjusting mechanism of claim 1, wherein said cylinder comprises a first cylinder and a second cylinder which are connected, said slave piston is disposed in said second cylinder, said master piston is disposed in said first cylinder and divides said first cylinder into a first chamber and a second chamber, said first chamber is provided with a first communicating hole, said second chamber is provided with a second communicating hole;
a partition plate is arranged in the second cylinder body, the driven piston comprises a first piston and a second piston which are respectively arranged at two sides of the partition plate, the second cylinder body is provided with a third communication hole communicated with the first communication hole and a fourth communication hole communicated with the second communication hole, the third communication hole is positioned at one side of the first piston far away from the partition plate, and the fourth communication hole is positioned at one side of the second piston close to the partition plate;
the first piston is connected with one lens barrel, and the second piston is connected with the other lens barrel.
3. The interpupillary distance adjusting mechanism of claim 2, wherein said second cylinder further comprises a first pressure relief through hole and a second pressure relief through hole, said first pressure relief through hole is located on a side of said first piston close to said spacer, said second pressure relief through hole is located on a side of said second piston far from said spacer.
4. The interpupillary distance adjustment mechanism of claim 3, wherein said first pressure relief through hole and said second pressure relief through hole are disposed in communication.
5. The interpupillary distance adjusting mechanism of claim 4, further comprising a first connector connected to said first pressure relief through hole, a second connector connected to said second pressure relief through hole, and a first hose connecting said first connector and said second connector.
6. The interpupillary distance adjusting mechanism of claim 5, further comprising a third joint tube connected to said fourth communication hole, wherein said first piston slides in said second cylinder to have a first limit position and a second limit position, and wherein said first piston abuts against an outer wall surface of said second joint tube at said first limit position; in the second limit position, the first piston abuts against an outer wall surface of the third joint pipe.
7. The interpupillary distance adjusting mechanism of claim 6, further comprising a fourth joint pipe connected to the second communication hole, and a second hose connecting the third joint pipe and the fourth joint pipe; and/or
The pupil distance adjusting mechanism further comprises a fifth joint pipe connected with the third communication hole, a sixth joint pipe connected with the first communication hole, and a third hose connected with the fifth joint pipe and the sixth joint pipe.
8. The interpupillary distance adjusting mechanism of claim 2, wherein the second cylinder comprises a second base and two second cylinder bodies respectively mounted at two ends of the second base, and the partition is disposed on the second base.
9. The interpupillary distance adjustment mechanism of claim 8, wherein said second cylinder body is detachably connected to said second base,
and/or the second base corresponds the second cylinder body is equipped with external screw thread portion, the second cylinder body corresponds external screw thread portion is equipped with the internal thread hole.
10. The interpupillary distance adjusting mechanism of claim 3, further comprising a first connecting rod connected to said first piston, said first connecting rod extending along the displacement direction of said first piston and at least partially movably passing through said second cylinder, said first connecting rod being adapted to be connected to a said lens barrel; and/or
The pupil distance adjusting mechanism further comprises a second connecting rod connected with the second piston, the second connecting rod extends along the displacement direction of the second piston and at least partially movably penetrates through the second cylinder body, and the second connecting rod is used for connecting another lens barrel.
11. The interpupillary distance adjusting mechanism of claim 1, wherein said driving member comprises a first driving rod connected to one end of said driving piston, said first driving rod extending along the displacement direction of said driving piston and at least partially movably passing through said first cylinder and being exposed to the outside; and/or
The driving piece further comprises a second driving rod connected with the other end of the driving piston, the second driving rod extends along the displacement direction of the driving piston, and at least part of the second driving rod penetrates through the first cylinder body in a movable mode and is exposed outside.
12. The interpupillary distance adjustment mechanism of any of claims 1-11, wherein said fluid is provided as a gas; and/or
And a sealing ring is arranged on the outer periphery of the piston and is in sliding contact with the inner wall surface of the cylinder body.
13. A head-mounted display device comprising the interpupillary distance adjustment mechanism of any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398113.8A CN114035329A (en) | 2021-11-23 | 2021-11-23 | Interpupillary distance adjustment mechanism and head-mounted display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398113.8A CN114035329A (en) | 2021-11-23 | 2021-11-23 | Interpupillary distance adjustment mechanism and head-mounted display device |
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| CN114035329A true CN114035329A (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111398113.8A Pending CN114035329A (en) | 2021-11-23 | 2021-11-23 | Interpupillary distance adjustment mechanism and head-mounted display device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102410301A (en) * | 2010-09-24 | 2012-04-11 | 富泰华工业（深圳）有限公司 | Connecting mechanism and electronic device using same |
| CN206848592U (en) * | 2017-04-27 | 2018-01-05 | 新疆微视创益信息科技有限公司 | A kind of virtual reality device |
| CN207623622U (en) * | 2017-12-15 | 2018-07-17 | 深圳市柔宇科技有限公司 | Wear display equipment and its interpupillary distance regulating device |
| CN110109251A (en) * | 2019-05-23 | 2019-08-09 | 歌尔科技有限公司 | Adjustable interpupillary distance wears display equipment |
| CN212160233U (en) * | 2020-05-12 | 2020-12-15 | 歌尔智能科技有限公司 | Pupil distance adjustable head-mounted display device |
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2021
- 2021-11-23 CN CN202111398113.8A patent/CN114035329A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410301A (en) * | 2010-09-24 | 2012-04-11 | 富泰华工业（深圳）有限公司 | Connecting mechanism and electronic device using same |
| CN206848592U (en) * | 2017-04-27 | 2018-01-05 | 新疆微视创益信息科技有限公司 | A kind of virtual reality device |
| CN207623622U (en) * | 2017-12-15 | 2018-07-17 | 深圳市柔宇科技有限公司 | Wear display equipment and its interpupillary distance regulating device |
| CN110109251A (en) * | 2019-05-23 | 2019-08-09 | 歌尔科技有限公司 | Adjustable interpupillary distance wears display equipment |
| CN212160233U (en) * | 2020-05-12 | 2020-12-15 | 歌尔智能科技有限公司 | Pupil distance adjustable head-mounted display device |
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Effective date of registration: 20221117 Address after: 266104 No. 500, Songling Road, Laoshan District, Qingdao, Shandong Applicant after: GOERTEK TECHNOLOGY Co.,Ltd. Address before: 261031 workshop 1, phase III, Geer Photoelectric Industrial Park, 3999 Huixian Road, Yongchun community, Qingchi street, high tech Zone, Weifang City, Shandong Province Applicant before: GoerTek Optical Technology Co.,Ltd. |
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