CN218728368U

CN218728368U - Bandage adjusting device, back bandage subassembly and head-mounted apparatus

Info

Publication number: CN218728368U
Application number: CN202222982475.8U
Authority: CN
Inventors: 尤冉; 许国军; 王成
Original assignee: Luxshare Precision Technology Nanjing Co Ltd
Current assignee: Luxshare Precision Technology Nanjing Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-24
Anticipated expiration: 2032-11-09

Abstract

The utility model belongs to the technical field of virtual reality equipment, a bandage adjusting device is disclosed, back bandage subassembly and head-mounted device, bandage adjusting device is including the location ring gear, adjust knob and end a component, end a component including ending a body and meshing portion, end a body coupling in adjust knob, meshing portion includes two meshing arms that set up for the first plane symmetry, the first plane extends at the diametric (al) of location ring gear, and be on a parallel with the axial of location ring gear, two meshing arms all mesh with the location ring gear mutually, back bandage subassembly includes above-mentioned bandage adjusting device, head-mounted device includes above-mentioned back bandage subassembly. The utility model discloses an among the bandage adjusting device, two meshing arm symmetries of meshing portion set up for when adjust knob rotates along any direction for the location ring gear, the required regulating force of exerting is the same, thereby can control adjust knob accurately for the turned angle of location ring gear, has guaranteed the regulation precision to the bandage elasticity.

Description

Bandage adjusting device, back bandage subassembly and head-mounted apparatus

Technical Field

The utility model relates to a virtual reality equipment technical field especially relates to a bandage adjusting device, back bandage subassembly and head-mounted apparatus.

Background

The virtual reality head-mounted display device is a product which integrates simulation technology and multiple technologies such as computer graphics, human-computer interface technology, multimedia technology, sensing technology, network technology and the like, can realize human-computer interaction by means of a computer and a sensor, and is fixed on the head of a user through a binding band for the user to use.

Among the existing head-mounted equipment, the elasticity of bandage usually adopts elastic arm ratchet structure to carry out the location regulation, but, the regulation power that current elastic arm ratchet structure user was applyed when transferring the elasticity and tightening is different, influences the user to the regulation precision of bandage elasticity for the user can't wear the use comfortably.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bandage adjusting device, back bandage subassembly and head-mounted apparatus, when transferring the pine and tightening the bandage, the regulating force that the user applyed is the same, can guarantee the regulation precision to the bandage elasticity.

To achieve the purpose, the utility model adopts the following technical proposal:

a strap adjustment device comprising:

positioning the gear ring;

the adjusting knob can rotate around the axis of the positioning gear ring;

the stop member comprises a stop body and a meshing part arranged on the stop body, the stop body is connected to the adjusting knob, the meshing part comprises two meshing arms symmetrically arranged relative to a first plane, the first plane extends in the diameter direction of the positioning gear ring and is parallel to the axial direction of the positioning gear ring, and the two meshing arms are meshed with the positioning gear ring.

Preferably, the adjusting knob further comprises a knob body and an adjusting gear, the knob body and the adjusting gear can rotate around the axis of the positioning gear ring, the stopping body is fixedly connected to the adjusting gear, and when the knob body rotates around the axis of the positioning gear ring, the knob body can abut against and drive the stopping member to rotate around the axis of the positioning gear ring.

Preferably, a transmission plane is arranged on the engagement arm, when the knob body rotates relative to the adjusting gear, the knob body can abut against the transmission plane on one engagement arm of the engagement portion, and the knob body can abut against the transmission plane to press the engagement arm to be disengaged from the positioning gear ring.

Preferably, the knob body comprises a knob cover and a transmission member which are detachably connected, and a transmission lug is arranged on the transmission member and is configured to abut against and drive the stop member to rotate.

Preferably, the stop member further comprises a synchronizing block connected to the stop body, and the knob body can drive the stop member to rotate synchronously when abutting against the synchronizing block.

Preferably, the engaging arm comprises a supporting arm and an engaging head which are connected with each other, one end of the supporting arm is connected to the stop body, and the engaging head is connected to the other end of the supporting arm and engaged with the positioning gear ring.

Preferably, the supporting arm extends in an arc shape and is concentrically arranged with the positioning gear ring at intervals.

Preferably, the number of the engaging portions is two, and the two engaging portions are symmetrical with respect to a second plane perpendicular to the first plane.

The rear bandage component comprises a rear support, a rear bandage and the bandage adjusting device, wherein the adjusting knob is rotatably arranged on the rear support, the positioning gear ring is fixedly arranged on the rear support, the rear bandage is provided with two rear bandages which are movably arranged on the rear support in a penetrating manner, and the adjusting knob is connected with the rear bandage.

Head-mounted equipment comprises the rear bandage component.

The utility model has the advantages that:

two meshing arms of meshing portion are symmetrically arranged for adjusting knob rotates along any direction for the location ring gear, and the required regulation power of exerting is the same, thereby can accurately control adjusting knob for the turned angle of location ring gear, has guaranteed the regulation precision to the bandage elasticity.

Drawings

Fig. 1 is a schematic structural view of a strap adjusting device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the strap adjusting device according to the embodiment of the present invention without the knob cover;

fig. 3 is a schematic structural view of the strap adjustment device according to the embodiment of the present invention, with the knob cover and the transmission member omitted;

FIG. 4 is a top view of FIG. 3;

fig. 5 is an exploded view of the strap adjustment device according to an embodiment of the present invention in one orientation;

fig. 6 is an exploded view of the strap adjustment device according to the embodiment of the present invention in another orientation;

fig. 7 is a schematic structural diagram of a head-mounted device according to an embodiment of the present invention;

FIG. 8 is a schematic view of the configuration of the rear strap and the first transition portion in accordance with an embodiment of the present invention;

fig. 9 is a schematic structural view of an orientation in which the upper strap and the second adaptor portion cooperate with each other according to an embodiment of the present invention;

fig. 10 is a schematic structural view of another position of the upper binding band and the second adaptor portion according to the embodiment of the present invention;

fig. 11 is a schematic structural view of the rear strap, the first transfer portion and the first strap adjusting device according to the embodiment of the present invention.

In the figure:

1. positioning the gear ring;

2. adjusting a knob; 21. an adjusting gear; 22. a knob cover; 23. a transmission member; 24. a transmission lug;

3. a stop member; 31. a stop body; 32. an engagement arm; 321. a transmission plane; 322. a support bar; 323. an engaging head; 33. a synchronization block;

100. a rear strap assembly; 110. a rear support; 120. a first strap adjustment device; 130. a rear binding band; 140. a first transition portion; 141. a containing groove; 142. a transfer shaft; 143. a butting block;

200. an upper strap assembly; 210. an upper support; 220. a second strap adjustment device; 230. a binding band is arranged; 231. an upper hoop section; 232. a side section; 240. a second transfer part; 241. switching the hole; 242. a limiting block; 250. connecting sheets; 260. an insertion portion.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and can include, for example, fixed or removable connections, mechanical or electrical connections, direct connections, indirect connections through an intermediary, communication between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

As shown in fig. 1 to 6, and with reference to fig. 7 to 11, the present embodiment provides a strap adjusting device including a positioning ring gear 1, an adjusting knob 2, and a stopper member 3. Wherein, adjust knob 2 can rotate around the axis of location ring gear 1, and end position component 3 is including ending position body 31 and setting up the meshing portion on ending position body 31, ends position body 31 and connect in adjust knob 2, and the meshing portion includes two meshing arms 32 for first plane symmetry sets up, and the diameter direction of first plane at location ring gear 1 extends to be on a parallel with the axial of location ring gear 1, two meshing arms 32 all mesh with location ring gear 1 mutually.

The utility model discloses an among the bandage adjusting device, two meshing arm 32 symmetries of meshing portion set up for when adjust knob 2 rotates along any one direction for location ring gear 1, the required regulating force of exerting is the same, thereby can control adjust knob 2 accurately for the turned angle of location ring gear 1, has guaranteed the regulation precision to the bandage elasticity.

Specifically, the adjusting knob 2 further comprises a knob body and an adjusting gear 21, the adjusting gear 21 is configured to be meshed with the bandage, the knob body and the adjusting gear 21 can both rotate around the axis of the positioning gear ring 1, the stop body 31 is fixedly connected to the adjusting gear 21, and when the knob body rotates around the axis of the positioning gear ring 1, the knob body can abut against and drive the stop member 3 to rotate around the axis of the positioning gear ring 1. The adjusting knob 2 is disassembled into a knob body and an adjusting gear 21, so that the knob body and the adjusting gear are convenient to disassemble, assemble and maintain.

More specifically, the engaging arm 32 is provided with a transmission plane 321, when the knob body rotates relative to the positioning ring gear 1, the knob body can abut against the transmission plane 321 on one engaging arm 32 of the engaging portion, and the knob body can press the engaging arm 32 to be disengaged from the positioning ring gear 1 by abutting against the transmission plane 321. Above-mentioned setting, make adjust knob 2 when rotating for location ring gear 1, can break away from the meshing with location ring gear 1 through leaning on a meshing arm 32 that makes in the meshing portion, on the required regulation power the same basis of exerting of 2 corotation of assurance adjust knob and reversal, the regulation resistance has been reduced, make adjust knob 2 when static, two meshing arms 32 by the meshing portion provide backstop power with location ring gear 1 meshes mutually, the location is more reliable, when adjust knob 2 rotates, provide backstop power by a meshing arm 32 of the meshing portion and location ring gear 1 meshes mutually, rotate more smoothly.

More specifically, the knob body comprises a knob cover 22 and a transmission member 23 which are detachably connected, a transmission lug 24 is arranged on the transmission member 23, and the transmission lug 24 is configured to abut against and drive the stop member 3 to rotate. Above-mentioned setting, further with the structure independence of user operation touch, the maintenance replacement of being convenient for to when the assembly, drive member 23 is located treats the mounting structure inboard, and knob lid 22 is located treats the mounting structure outside, and the two mutually supports, and drive member 23 plays and blocks sealed effect, has avoided external foreign matter to invade between location ring gear 1 and the meshing portion, influences bandage adjusting device's security and reliability.

In this embodiment, a square groove is formed in the knob cover 22, a square boss is formed in the transmission component 23, when the knob cover 22 and the transmission component 23 are assembled, the square boss is inserted into the square groove, the knob cover 22 and the transmission component 23 are locked through a fastener, when the knob cover 22 and the transmission component 23 are assembled, a box-shaped structure is fixedly arranged on the installation structure, a cylindrical positioning groove is formed in the box-shaped structure, the positioning gear ring 1 is integrally formed on the inner wall of the positioning groove, the transmission component 23 covers the opening of the positioning groove, the transmission protruding block 24 extends into the positioning groove, the adjusting gear 21 and the stop component 3 are integrally formed, a penetrating hole is formed in the bottom of the positioning groove, the stop component 3 is located in the accommodating groove, and the adjusting gear 21 penetrates out of the penetrating hole.

Specifically, the stop member 3 further includes a synchronizing block 33, the synchronizing block 33 is connected to the stop body 31, and when the knob body abuts against the synchronizing block 33, the stop member 3 can be driven to rotate synchronously. Through setting up synchronizing block 33, can make the drive of knob body to adjusting gear 21 more in time high-efficient, the emergence of the phenomenon of skidding when having avoided the transmission of the two.

More specifically, the plurality of transmission protrusions 24 are arranged, and when one transmission protrusion 24 presses the transmission plane 321 on the engagement arm 32 to disengage the engagement arm 32 from the positioning gear ring 1, the other transmission protrusion 24 presses the synchronization block 33, so that the engagement arm 32 can be effectively protected, and the transmission protrusion 24 is prevented from pressing the engagement arm 32 excessively.

Specifically, the engaging arm 32 includes a supporting rod 322 and an engaging head 323, the supporting rod 322 is connected to the stop body 31 at one end, the engaging head 323 is connected to the other end of the supporting rod 322 and engages with the positioning ring gear 1, and the transmission plane 321 is disposed on the engaging head 323. The meshing arm 32 is composed of a supporting rod 322 and a meshing head 323, the structure is simpler, when the adjusting knob 2 rotates relative to the positioning gear ring 1, the supporting rod 322 provides elastic deformation, the meshing head 323 and the positioning gear ring 1 provide meshing stopping force, and the supporting rod 322 and the meshing head 323 are matched with each other, so that the device is more pertinent, more stable and more reliable.

More specifically, the supporting rod 322 extends in an arc shape and is concentrically arranged with the positioning ring gear 1 at a distance. The supporting rod 322 can be elastically deformed more conveniently, so that when the transmission convex block 24 abuts against the transmission plane 321 on the meshing head 323, the supporting rod 322 can be elastically deformed along the radial direction of the positioning gear ring 1, and the process of disengaging from the meshing is more direct and reliable.

In the present embodiment, the engaging head 323 is provided with an engaging tooth, so that the positioning engagement with the positioning ring gear 1 is more accurate and the disengagement is more rapid.

Specifically, two engaging portions are provided, and the two engaging portions are symmetrical with respect to a second plane perpendicular to the first plane. The above arrangement makes the engagement force between the stop member 3 and the positioning ring gear 1 more balanced.

More specifically, the number of the synchronizing blocks 33 is two, the two synchronizing blocks 33 are symmetrical with respect to the first plane, the two engaging portions and the two synchronizing blocks 33 are arranged in a cross shape in the circumferential direction of the stopper body 31, the number of the transmission protrusions 24 is four, and one transmission protrusion 24 is arranged between each adjacent engaging portion and the corresponding synchronizing block 33.

This embodiment still provides a back bandage subassembly 100, including back support 110, back bandage 130 and foretell bandage adjusting device, adjust knob 2 rotates and sets up on back support 110, and location ring gear 1 sets firmly on back support 110, and back bandage 130 is provided with two, and two back bandage 130 activities are worn to locate on back support 110 to mesh mutually with adjusting gear 21.

The embodiment further provides an upper bandage assembly 200, which comprises an upper support 210, two upper bandages 230 and the bandage adjusting device, wherein the adjusting knob 2 is rotatably arranged on the upper support 210, the positioning gear ring 1 is fixedly arranged on the upper support 210, the two upper bandages 230 are arranged, and the two upper bandages 230 are movably arranged on the upper support 210 in a penetrating manner and connected with the adjusting knob 2.

The utility model also provides a head-mounted apparatus, including foretell back bandage subassembly 100.

Example two

As shown in fig. 7-11, and with reference to fig. 1-6, the present embodiment provides a headgear comprising a rear strap assembly 100 and an upper strap assembly 200. The rear bandage assembly 100 includes a rear support 110, a first bandage adjusting device 120 and two rear bandages 130, the two rear bandages 130 are movably arranged on the rear support 110, the first bandage adjusting device 120 is arranged on the rear support 110 and is configured to adjust the extending lengths of the two rear bandages 130 from the rear support 110, a first transfer part 140 is arranged on a portion of the rear bandage 130 extending out of the rear support 110, the two first transfer parts 140 are arranged at intervals along a first straight line, the upper bandage assembly 200 includes an upper support 210, a second bandage adjusting device 220 and two upper bandages 230, the two upper bandages 230 are movably arranged on the upper support 210, the second bandage adjusting device 220 is arranged on the upper support 210 and is configured to adjust the extending lengths of the two upper bandages 230 from the upper support 210, a second transfer part 240 is arranged on a portion of the upper bandage 230 extending out of the upper support 210, and the two second transfer parts 240 are connected to the two first transfer parts 140 in a one-to-one rotating manner around the first straight line.

The utility model discloses an among the head-mounted apparatus, through setting up first switching portion 140 and second switching portion 240, make and go up bandage subassembly 200 and stride across the extension in left and right directions when wearing, can wind first straight line rotation for back bandage subassembly 100, thereby can be to user's specific head type, the angle position orientation of bandage subassembly 200 is gone up in the fore-and-aft direction to the regulation, and, on the basis of first bandage adjusting device 120 on back bandage subassembly 100, still be provided with second bandage adjusting device 220 on going up bandage subassembly 200, can adjust the elasticity degree of bandage subassembly 200 in a flexible way conveniently, improve user's the travelling comfort of wearing.

Specifically, the first strap adjustment device 120 and the second strap adjustment device 220 in this embodiment have the same structure, and are both strap adjustment devices in the first embodiment, and the specific structure is not described herein again.

More specifically, when the adjustment knob 2 of the first strap adjustment device 120 is rotated, the relative positions of the two rear straps 130 can be adjusted, thereby realizing the adjustment of the tightness of the rear strap assembly 100, and when the adjustment knob 2 of the second strap adjustment device 220 is rotated, the relative positions of the two upper straps 230 can be adjusted, thereby realizing the adjustment of the tightness of the upper strap assembly 200.

Specifically, one of the first adapter portion 140 and the second adapter portion 240 serves as an outer sleeve member and is provided with a receiving groove 141, and the other serves as an inner member and extends into the receiving groove 141 to rotate in the receiving groove 141. The arrangement makes the rotational connection between the first adaptor part 140 and the second adaptor part 240 safer.

More specifically, the accommodating groove 141 is provided with a transfer shaft 142, the built-in member is provided with a transfer hole 241, and the transfer shaft 142 extends into the transfer hole 241 and rotates under the limit of the transfer hole 241. The arrangement makes the rotational connection between the first adaptor part 140 and the second adaptor part 240 more reliable.

In this embodiment, the head-mounted device further comprises a connecting plate 250, the connecting plate 250 and the outer sleeve are respectively located at two sides of the inner member, and the connecting plate 250 is connected to the transfer shaft 142. Through setting up connection piece 250 for the external member has carried on spacingly with built-in to the axis of rotation is upwards, has avoided the two to break away from in the use.

Specifically, the first adapter portion 140 and the second adapter portion 240 are provided with a contact block 143 on one side and two stop blocks 242 on the other side, and when the first adapter portion 140 rotates relative to the second adapter portion 240, the contact block 143 moves between the two stop blocks 242. With the arrangement, the rotation amplitude of the upper bandage assembly 200 relative to the rear bandage assembly 100 is limited, so that the head-mounted device is safer when being worn and used.

More specifically, when the abutment block 143 abuts against one of the stoppers 242, the first strap adjustment device 120 abuts against the second strap adjustment device 220, so as to facilitate the storage and placement of the head-mounted equipment, at this time, the upper strap assembly 200 is at the lower limit position with respect to the rear strap assembly 100, and when the abutment block 143 abuts against the other stopper 242, the distance between the first strap adjustment device 120 and the second strap adjustment device 220 is at the maximum, at this time, the upper strap assembly 200 is at the upper limit position with respect to the rear strap assembly 100. With the arrangement, the head-mounted device can be safely stored, and when the head-mounted device is used, the upper strap assembly 200 can be freely adjusted in position between the lower limit position and the upper limit position relative to the rear strap assembly 100, so that the upper strap assembly 200 is prevented from sliding to the front of a user beyond the upper limit position when being rotationally adjusted from the back to the front, and the wearing requirements of different users are met on the basis of ensuring safety.

In this embodiment, the receiving groove 141 is disposed on the first transferring portion 140, and is cylindrical, a portion of the second transferring portion 240 extends into the receiving groove 141, the transferring shaft 142 is disposed at the bottom of the receiving groove 141, the abutting block 143 is disposed in the receiving groove 141 and is located on one side of the rotating shaft, the transferring hole 241 penetrates through the second transferring portion 240, the two limiting blocks 242 are disposed on the second transferring portion 240 respectively, and are spaced in the circumferential direction of the transferring hole 241, and under the cooperation of the abutting block 143 and the two limiting blocks 242, the rotation range of the upper binding band assembly 200 relative to the rear binding band assembly 100 can be 90 °.

Specifically, one end of the rear strap 130 is connected to the first strap adjusting means 120, and the first transfer portion 140 is provided at the other end of the rear strap 130. The first strap adjusting means 120 can adjust the tightness of the rear strap assembly 100 by driving one end of the rear strap 130.

In this embodiment, an adjusting hole is formed at one end of the rear strap 130, the adjusting hole is long and extends along the length direction of the rear strap 130, a tooth shape is formed at one end of the width direction of the adjusting hole, the adjusting gear 21 of the first strap adjusting device 120 extends into the adjusting holes of the two rear straps 130, the tooth shapes of the two adjusting holes are located at two sides of the adjusting gear 21 and are respectively meshed with the adjusting gear 21, the rear support 110 is arc-shaped, penetrating holes are respectively formed at two ends of the rear support, the two rear straps 130 correspondingly extend into the rear support 110 through the two penetrating holes one by one, the transmission member 23 of the first strap adjusting device 120 is located at the inner side of the rear support 110, the knob cover 22 is located at the outer side of the rear support 110, the positioning ring gear 1 is fixedly arranged in the rear support 110, when the adjusting knob 2 of the first strap adjusting device 120 rotates relative to the rear support 110, the two rear straps 130 are driven to move towards or away from each other through the meshing of the adjusting gear 21 with the two rear straps 130, and further adjust the tightness of the two rear straps 130 when being worn.

Specifically, the upper band 230 includes an upper band section 231, one end of the upper band section 231 is connected to the second band adjustment device 220, and the second adapter 240 is disposed at the other end of the upper band section 231. Second strap adjustment device 220 is capable of adjusting the tightness of upper strap assembly 200 by driving one end of upper hoop section 231.

More specifically, the upper strap 230 further includes a side section 232, the side section 232 is disposed at an angle to the upper hoop section 231, and one end of the side section 232 is connected to the second adapter 240. By providing the side segment 232, the assembly connection with the display device can be facilitated.

In this embodiment, the side sections 232 and the upper hoop section 231 are perpendicular to each other, and the first adapter portion 140 and the second adapter portion 240 rotatably connected to each other constitute an adapter member, and the side sections 232 and the rear strap 130 are located on opposite sides of the adapter member.

Specifically, the other end of the side segment 232 is provided with an insertion portion 260. The plug-in portion 260 is configured to be plugged in and connected to the display device, so as to facilitate the use of the head-mounted device.

More specifically, the insertion portion 260 includes an insertion body and two insertion levers. Wherein, cartridge body coupling is in side joint section 232, is provided with the cartridge groove on the cartridge body, and the one end of grafting pole is connected in the tank bottom in cartridge groove, and the other end is provided with the card protrudingly, and the protruding back of the body that blocks on two cartridge poles sets up mutually, along the direction that deviates from the tank bottom in cartridge groove, and the interval between two cartridge poles increases gradually to the protruding position of card is outside the cartridge groove.

In this embodiment, an adjusting hole is formed at one end of the upper hoop section 231, the adjusting hole is long-strip-shaped and extends along the length direction of the upper hoop section 231, a tooth shape is formed at one end of the width direction of the adjusting hole, the adjusting gear 21 of the second bandage adjusting device 220 extends into the adjusting holes of the two upper hoop sections 231, the tooth shapes of the two adjusting holes are located at two sides of the adjusting gear 21 and are respectively meshed with the adjusting gear 21, the upper support 210 is arc-shaped, penetrating holes are respectively formed at two ends of the upper support, the two upper hoop sections 231 correspondingly extend into the upper support 210 one by one through the two penetrating holes, the transmission member 23 of the second bandage adjusting device 220 is located at the inner side of the upper support 210, the knob cover 22 is located at the outer side of the upper support 210, the positioning gear ring 1 is fixedly arranged in the upper support 210, and when the adjusting knob 2 of the second bandage adjusting device 220 rotates relative to the upper support 210, the two upper hoop sections 231 are driven to move toward or away from each other through the meshing of the adjusting gear 21 and the two upper hoop sections 231, so as to further adjust the tightness of the two upper bandages 230 when being worn.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Bandage adjusting device, its characterized in that includes:

positioning a gear ring (1);

the adjusting knob (2) can rotate around the axis of the positioning gear ring (1);

the stop member (3), the stop member (3) including stop body (31) with set up in the meshing portion on the stop body (31), stop body (31) connect in adjust knob (2), the meshing portion includes two meshing arms (32) that set up for first plane symmetry, the first plane is in the diametric extension of location ring gear (1) is and be on a parallel with the axial of location ring gear (1), two meshing arm (32) all with location ring gear (1) meshes mutually.

2. The strap adjusting device according to claim 1, wherein the adjusting knob (2) further comprises a knob body and an adjusting gear (21), the knob body and the adjusting gear (21) can rotate around the axis of the positioning gear ring (1), the stop body (31) is fixedly connected to the adjusting gear (21), and when the knob body rotates around the axis of the positioning gear ring (1), the stop member (3) can be abutted against and driven to rotate around the axis of the positioning gear ring (1).

3. Strap adjustment device according to claim 2, characterized in that a transmission plane (321) is provided on the engagement arm (32), against which transmission plane (321) on one of the engagement arms (32) of the engagement portion can be brought into abutment when the knob body is rotated relative to the adjustment gear (21), the knob body being able to be disengaged from the positioning toothing (1) by pressing the engagement arm (32) against the transmission plane (321).

4. The strap adjustment device according to claim 2, wherein the knob body comprises a knob cover (22) and a transmission member (23) which are detachably connected, a transmission projection (24) is provided on the transmission member (23), and the transmission projection (24) is configured to abut against and bring the stop member (3) into rotation.

5. The strap adjusting device according to claim 2, wherein the stop member (3) further comprises a synchronizing block (33), the synchronizing block (33) is connected to the stop body (31), and the knob body can drive the stop member (3) to rotate synchronously when abutting against the synchronizing block (33).

6. The strap adjusting device according to claim 1, wherein the engaging arm (32) includes a support rod (322) and an engaging head (323) connected to each other, one end of the support rod (322) is connected to the stopper body (31), and the engaging head (323) is connected to the other end of the support rod (322) and engaged with the positioning ring gear (1).

7. Strap adjustment device according to claim 6, characterized in that the support bar (322) extends in an arc, concentrically spaced from the positioning toothing (1).

8. The strap adjusting device according to any one of claims 1-7, wherein there are two of said engaging portions, and two of said engaging portions are symmetrical with respect to a second plane, said second plane being perpendicular to said first plane.

9. The rear bandage component is characterized by comprising a rear support, a rear bandage and a bandage adjusting device according to any one of claims 1 to 8, wherein the adjusting knob (2) is rotatably arranged on the rear support, the positioning gear ring (1) is fixedly arranged on the rear support, the number of the rear bandage is two, and the two rear bandages are movably arranged on the rear support in a penetrating manner and are connected with the adjusting knob (2).

10. Headgear comprising the rear strap assembly of claim 9.