Neck brace

Abstract

The present invention provides a neck brace, which includes a support member, a strap, a wire winding portion, a driving portion and an unlocking key. Among them, the wire winding portion is provided on the support member and can rotate relative to the support member. The driving portion is provided on the support member. The neck brace includes a first state in which the driving portion and the wire winding portion cooperate with each other and a second state in which the driving portion and the wire winding portion are separated from each other. When the neck brace is in the first state, the driving portion can drive the wire winding portion to rotate to realize the winding or release of the strap. The unlocking key is provided on the neck brace and is used to control the switching of the neck brace between the first state and the second state. When switched to the second state, the support member or the strap can be pulled by an external force. At this time, the wire winding portion will rotate in the direction of releasing the strap, realizing the rapid release of the strap, so as to facilitate the user to quickly remove the neck brace after use.

Description

Technical Field

[0001] The present invention relates to the field of physiotherapy and health care instruments, and mainly relates to a cervical collar. Background Art

[0002] Most of the existing cervical collars are provided with a tightening adjustment structure, which adjusts the tightness of the strap or the rack. However, the existing cervical collars lack a one-key unlocking function. After the user finishes using the cervical collar, they have to rotate the knob in the reverse direction to remove the cervical collar, which is time-consuming and laborious. When the cervical collar is in a tight state, the initial force for turning the knob is also very large, which is very unfriendly to users with thin bodies. And when an unexpected event occurs, it is also a relatively big difficulty to remove the cervical collar in the first time. Summary of the Invention

[0003] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a cervical collar, which can quickly put the strap in a relaxed state, so as to facilitate the user to quickly remove the cervical collar after use.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A cervical collar, comprising: a support member and a strap; a wire winding part, provided on the support member and capable of rotating relative to the support member, the wire winding part is connected to the strap and is used for winding or releasing the strap by rotating relative to the support member; a driving part, provided on the support member, the cervical collar includes a first state in which the driving part and the wire winding part cooperate with each other and a second state in which the driving part and the wire winding part are separated from each other, the driving part is used to drive the wire winding part to rotate in the first state; an unlocking key, provided on the cervical collar, and used to control the cervical collar to switch to the second state.

[0006] In some technical solutions of the present application, the driving part includes an operating member and a first toothed member, the first toothed member is connected to the operating member and can rotate under the drive of the operating member; the wire winding part includes a wire winding shaft and a second toothed member, the wire winding shaft is used for winding or releasing the strap by rotating, the second toothed member is in transmission cooperation with the wire winding shaft so that the second toothed member and the wire winding shaft can rotate together; the first toothed member is a movable member capable of moving relative to the operating member, or the second toothed member is a movable member capable of moving relative to the wire winding part, and the first toothed member and the second toothed member are meshed or separated by the movement of the movable member, the operating member is used to drive the wire winding part to rotate in a state where the first toothed member and the second toothed member are meshed; the unlocking key is in transmission connection with the movable member and can drive the movable member to move so that the first toothed member and the second toothed member are meshed.

[0007] In some technical solutions of the present application, the second toothed component has an axial movement amount relative to the wire winding shaft. The first toothed component is located on one side of the second toothed component in the axial direction. The second toothed component meshes with or separates from the first toothed component through axial movement. The neck support further includes a second elastic member, which abuts against the second toothed component. When the second toothed component meshes with the first toothed component under the drive of the unlocking key, the second toothed component elastically deforms the second elastic member, and the elastic force of the second elastic member is used to drive the second toothed component to move to a position where it can separate from the first toothed component.

[0008] In some technical solutions of the present application, the support member is provided with a first limiting portion and a second limiting portion, and there is a distance between the first limiting portion and the second limiting portion. A limiting member is provided on the wire winding shaft, and the limiting member can move between the first limiting portion and the second limiting portion to limit the rotation amplitude of the wire winding shaft.

[0009] In some technical solutions of the present application, a collar is provided on the wire winding shaft, one end of the binding strap is connected to the collar, and the other end extends out of the outside of the support member.

[0010] In some technical solutions of the present application, the operating member includes a knob, the knob is provided on the outer side surface of the support member and can rotate relative to the support member. The first toothed component is arranged inside the support member and is connected to the knob to respond to the torque of the knob.

[0011] In some technical solutions of the present application, the operating member further includes a sun gear, a planetary gear and an internal gear ring. The sun gear is connected to the knob, the internal gear ring is sleeved outside the sun gear, the planetary gear is arranged between the internal gear ring and the sun gear, and one side of the planetary gear meshes with the internal gear ring and the other side meshes with the sun gear. The first toothed component is provided on the internal gear ring.

[0012] In some technical solutions of the present application, the wire winding portion further includes a volute spring. One end of the wire winding shaft is provided with a first clamping portion, and the inner side of the shell of the support member is further provided with a second clamping portion. One end of the volute spring is clamped with the first clamping portion, and the other end of the volute spring is clamped with the second clamping portion. The wire winding shaft can rotate under the drive of the driving portion and can rotate back under the action of the volute spring.

[0013] In some technical solutions of the present application, the wire winding part further includes a push plate, the push plate is sleeved on the wire winding shaft, the push plate is located between the second toothed member and the unlocking key, one of the unlocking key and the push plate is provided with a convex block, and the other is provided with an abutting portion, the convex block abuts against the abutting portion, the unlocking key is arranged to be movable relative to the neck support, and the relative sliding between the convex block and the abutting portion is caused by the movement of the unlocking key relative to the neck support.

[0014] In some technical solutions of the present application, the rotational movement of the wire winding part relative to the supporting member includes a winding direction for winding the strap onto the wire winding part and a releasing direction for releasing the strap on the wire winding part. The wire winding part further includes: a first elastic member connected to the wire winding part, when the wire winding part rotates in the winding direction, the first elastic member can be elastically deformed, and when the unlocking member switches the neck support to the second state, the elastic force of the first elastic member is used to drive the wire winding part to rotate in the releasing direction.

[0015] In some technical solutions of the present application, the wire winding part further includes a push plate, the push plate is located on the side of the wire winding part close to the unlocking key, and the unlocking key is movably arranged on the supporting member; the unlocking key includes a button, and the movement of the button includes a first position and a second position; when the button is in the first position, the button can abut against the side of the push plate close to the button, driving the push plate to move, and the push plate can move the wire winding part to a first state in which it cooperates with the driving part; when the button is pressed to the second position, the wire winding part moves to a second state in which it is separated from the driving part.

[0016] In some technical solutions of the present application, the unlocking key includes a button, a third elastic member and an abutting portion. The front shell of the supporting member is provided with a through hole, the button passes through the through hole and is placed outside the front shell, the third elastic member is arranged inside the front shell, one end of the third elastic member abuts against the button, and the other end of the third elastic member abuts against the supporting member; the abutting portion is arranged on the button, and the movement of the button includes a first position and a second position; the elastic force of the third elastic member can push up the button to make the button in the first position, and the abutting portion can abut against the wire winding part to drive the wire winding part to move, so that the wire winding part moves to a first state in which it cooperates with the driving part; when the button is pressed to the second position, the abutting portion moves away from the wire winding part, so that the wire winding part moves to a second state in which it is separated from the driving part.

[0017] In some technical solutions of the present application, the neck support further includes a positioning member. One end of the positioning member is connected to the supporting member, and the other end is connected to the button, for restricting the button to be in the first position and restricting the button to be in the second position. A first sliding groove is provided on one side surface of the button, and one end of the positioning member is placed in the first sliding groove and can move along the first sliding groove. A clamping groove is provided on the first sliding groove, and the clamping groove is near one end of the first sliding groove. When the positioning member is placed in the clamping groove, the button is in the first position. When the positioning member is placed at one end of the first sliding groove away from the clamping groove, the button is in the second position.

[0018] In some technical solutions of the present application, a first guiding surface for guiding the positioning member into the clamping groove is provided on the first sliding groove; a second sliding groove is further provided on the button, and the positioning member can move along the second sliding groove to the first sliding groove; a second guiding surface for guiding the positioning member into the second sliding groove is provided between the second sliding groove and the clamping groove.

[0019] Beneficial effects: The neck support of the present application includes a supporting member, a strap, a winding part, a driving part and an unlocking button. Among them, the winding part is arranged on the supporting member and can rotate relative to the supporting member. The driving part is arranged on the supporting member. The neck support includes a first state in which the driving part and the winding part cooperate with each other and a second state in which the driving part and the winding part are separated from each other. When the neck support is in the first state, the driving part can drive the winding part to rotate to realize the winding or release of the strap. The unlocking button is arranged on the neck support for controlling the switching of the neck support between the first state and the second state. When switched to the second state, the supporting member or the strap can be pulled by an external force, and at this time the winding part will rotate in the direction of releasing the strap to realize the rapid release of the strap. Therefore, it is convenient for the user to quickly remove the neck support after use. Description of the Drawings

[0020] Figure 1 is an exploded schematic view of the neck support.

[0021] Figure 2 is a front view schematic view of the neck support.

[0022] Figure 3 is Figure 2 a left view schematic view of

[0023] Figure 4 is Figure 2 a right view schematic view of

[0024] Figure 5 is a connection structure schematic view between the first elastic member, the winding shaft and the supporting member.

[0025] Figure 6 is Figure 5 an exploded schematic view of

[0026] Figure 7 It is a schematic diagram of the cooperation when the wire winding part and the driving part are in the first state.

[0027] Figure 8 It is Figure 7 an exploded schematic diagram of

[0028] Figure 9 It is a schematic structural diagram of the neck support in the first state.

[0029] Figure 10 It is a schematic structural diagram of the neck support in the second state.

[0030] Figure 11 It is Figure 9 an exploded schematic diagram of

[0031] Figure 12 It is a schematic structural diagram of the button.

[0032] Figure 13 It is a schematic structural diagram of the button when it is in the second position.

[0033] Figure 14 It is Figure 13 a front view schematic diagram of

[0034] Figure 15 It is a schematic structural diagram of the button when it is in the first position.

[0035] Figure 16 It is Figure 15 a front view schematic diagram of

[0036] Figure 17 It is a schematic structural diagram of the button during the process of switching from the first position to the second position.

[0037] Figure 18 It is Figure 17 a front view schematic diagram of

[0038] Figure 19 It is a schematic diagram of the connection structure among the limiting part, the wire winding shaft and the supporting part.

[0039] Description of main component symbols: 100, support; 110, first limiting part; 120, second limiting part; 130, gearbox cover; 140, rotating shaft bracket; 141, second clamping part; 150, fixing block; 160, front shell; 170, rear shell; 200, wire winding part; 210, wire winding shaft; 211, engaging teeth; 212, collar; 213, first clamping part; 221, groove; 220, second toothed component; 230, limiting member; 240, first elastic member; 260, push plate; 261, protrusion; 300, driving part; 320, first toothed component; 330, knob; 340, sun gear; 350, planet gear; 360, internal gear ring; 410, button; 411, abutting part; 412, first position; 413, second position; 414, first chute; 415, clamping groove; 416, first guiding surface; 417, second chute; 418, second guiding surface; 420, third elastic member; 500, positioning member; 600, second elastic member. Detailed implementation

[0040] The present invention provides a neck support. To make the purpose, technical solution and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be a direct connection, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Refer to Figures 1 - 4 and Figures 7 - 11, A neck brace, comprising a support member 100, a strap, a wire winding part 200, a driving part 300 and an unlocking key. Among them, the support member 100 is used to be worn on the user's neck to support the user's chin, and the strap is used to wear the support member 100 on the user's neck. The wire winding part 200 is arranged on the support member 100, and the wire winding part 200 can rotate relative to the support member 100. The wire winding part 200 is connected to the strap. By rotating the wire winding part 200 relative to the support member 100, the wire winding part 200 can wind or release the strap. The driving part 300 is arranged on the support member 100. The neck brace includes a first state in which the driving part 300 and the wire winding part 200 cooperate with each other and a second state in which the driving part 300 and the wire winding part 200 are separated from each other. The driving part 300 is used to drive the wire winding part 200 to rotate in the first state, so as to realize the winding or release of the strap, and further realize the adjustment of the tightness of the neck brace worn on the neck. The unlocking key is arranged on the neck brace and is used to control the neck brace to switch to the second state.

[0044] In the above, when the neck brace is in the first state, the wire winding part 200 and the driving part 300 cooperate with each other, and the wire winding part 200 can realize the winding and release of the strap through the drive of the driving part 300. When the neck brace is in the second state, the wire winding part 200 and the driving part 300 are separated from each other. Since there is no interference from the driving part 300 on the wire winding part 200, the wire winding part 200 can rotate freely. That is, when the neck brace is in the second state, the support member 100 or the strap can be pulled by an external force. At this time, the wire winding part 200 will rotate in the direction of releasing the strap, realizing the rapid release of the strap. Therefore, it is convenient for the user to quickly remove the neck brace after use; and when the neck brace needs to be removed, it is not necessary to rotate the driving part 300, that is, it is not necessary to overcome the initial force of rotating the driving part 300, making it more convenient and labor-saving to remove the neck brace. Specifically, when the user needs to remove the neck brace, the unlocking key can be operated. The unlocking key controls the neck brace to switch to the second state. In the second state, the wire winding part is separated from the driving part, and the wire winding part does not need to be driven by the driving part, that is, the user does not need to spend time operating the driving part to make the wire winding part rotate to release the strap, but can quickly release the strap through the wire winding part itself. Thus, the function that the user can quickly release the strap of the wire winding part through the unlocking key can be realized.

[0045] Refer to Figure 7 and Figure 8 , In some embodiments of the present application, the driving part 300 includes an operating member and a first toothed member 320. The first toothed member 320 is connected to the operating member, and the first toothed member 320 can rotate under the drive of the operating member. That is to say, the operating member is used to drive the first toothed member 320 to rotate. By inputting torque on the operating member, the torque can be transmitted to the first toothed member 320 through the operating member. When the neck brace is in the first state, the torque is transmitted to the wire winding part 200 through the first toothed member 320 to realize the winding and release of the strap.

[0046] The winding part 200 includes a winding shaft 210 and a second toothed component 220. The winding shaft 210 can rotate relative to the supporting member 100, and the binding strap is connected to the winding shaft 210. Therefore, when the winding shaft 210 rotates, the winding or releasing of the binding strap can be achieved. The second toothed component 220 is in transmission cooperation with the winding shaft 210 so that the second toothed component 220 and the winding shaft 210 can rotate together. Among them, the second toothed component 220 can be engaged with and separated from the first toothed component 320. When the second toothed component 220 is engaged with the first toothed component 320, the torque input on the operating member can drive the winding shaft 210 to rotate through the first toothed component 320 and the second toothed component 220 to achieve the winding or releasing of the binding strap.

[0047] Refer to Figure 8 and Figure 10 , since the first toothed component 320 and the second toothed component 220 need to be switched between the engaged state and the separated state, that is, switched between the first state and the second state. Therefore, at least one of the first toothed component 320 and the second toothed component 220 is set as a movable component, and the movement of the movable component is used to achieve that the first toothed component 320 and the second toothed component 220 are in the engaged state and that the first toothed component 320 and the second toothed component 220 are in the separated state, and to switch between the engaged state and the separated state.

[0048] In one embodiment, the first toothed component 320 is a movable component that can move relative to the operating member. The unlocking key is in transmission connection with the movable component, and the unlocking key can drive the movable component to move so that the first toothed component 320 is engaged with the second toothed component 220. By driving the first toothed component 320 to move through the unlocking key, the first toothed component 320 is moved to the position where it is engaged with the second toothed component 220, and the engagement between the first toothed component 320 and the second toothed component 220 is completed.

[0049] In another embodiment, the second toothed component 220 is a movable component that can move relative to the winding part 200. The unlocking key is in transmission connection with the movable component, and the unlocking key can drive the movable component to move so that the second toothed component 220 is engaged with the first toothed component 320. By driving the second toothed component 220 to move through the unlocking key, the second toothed component 220 is moved to the position where it is engaged with the first toothed component 320, and the engagement between the second toothed component 220 and the first toothed component 320 is completed.

[0050] For example, the neck brace can complete the engagement between the second toothed component 220 and the first toothed component 320 through the unlocking key, or can also complete the separation between the second toothed component 220 and the first toothed component 320 through the unlocking key. For example: The unlocking key is connected to the movable component so that the movable component moves together with the unlocking key. Specifically, for example: A cam mechanism, a lead screw mechanism, etc. are formed between the unlocking key and the movable component.

[0051] Refer to Figure 9 and Figure 10 In the embodiment where the second toothed member 220 is a movable member that can move relative to the winding portion 200, the second toothed member 220 has an axial movement amount relative to the winding shaft 210. The first toothed member 320 is located on one side of the second toothed member 220 in the axial direction. The second toothed member 220 is engaged with or separated from the first toothed member 320 by moving axially along the winding shaft 210. Among them, the second toothed member 220 is a gear, and teeth are provided on its outer side. The cross-section of the winding shaft 210 is non-circular, and the central hole of the second toothed member 220 is matched with the cross-section of the winding shaft 210. Therefore, the second toothed member 220 can move axially on the winding shaft 210, and at the same time, the second toothed member 220 can drive the winding shaft 210 to rotate when it rotates.

[0052] Refer to Figure 8 In another embodiment, the cross-section of the winding shaft 210 is circular. Engagement teeth 211 are provided on the circumferential outer surface of the winding shaft 210, and grooves 221 are provided on the central hole of the second toothed member 220 and are matched with the engagement teeth 211. Moreover, when the second toothed member 220 is located at the position engaged with the first toothed member 320, the engagement teeth 211 are matched with the grooves 221. Therefore, when the second toothed member 220 is located at the position engaged with the first toothed member 320, it can drive the winding shaft 210 to rotate.

[0053] Specifically, the engagement teeth 211 have a length, and the length direction of the engagement teeth 211 is the same as the axial direction of the winding shaft 210. When the second toothed member 220 is located at the position engaged with the first toothed member 320 and when the second toothed member 220 is located at the position separated from the first toothed member 320, the engagement teeth 211 and the grooves 221 are in a matching state, which facilitates switching to the position where the second toothed member 220 enters the engagement with the first toothed member 320.

[0054] Refer to Figures 9 - 11 The neck support further includes a second elastic member 600. The second elastic member 600 abuts against the second toothed member 220, and the second elastic member 600 abuts against the side of the second toothed member 220 facing away from the unlocking key. When the second toothed member 220 is engaged with the first toothed member 320 under the drive of the unlocking key, the second toothed member 220 elastically deforms the second elastic member 600, so that the second elastic member 600 has an elastic force. The elastic force of the second elastic member 600 is used to drive the second toothed member 220 to move to a position where it can be separated from the first toothed member 320.

[0055] Specifically, the second elastic member 600 is one of a compression spring, rubber, and a spring plate. When the second toothed member 220 is driven to the meshing position with the first toothed member 320, the second elastic member 600 is compressed and elastically deformed. When the unlocking key drives the second toothed member 220 to move in the direction away from the first toothed member 320, the restoring force of the second elastic member 600 drives the second toothed member 220 to move, so that the second toothed member 220 is separated from the first toothed member 320, realizing the switching of the neck brace from the first state to the second state.

[0056] In another embodiment, the second elastic member 600 is a tension spring. When the second toothed member 220 is driven to the meshing position with the first toothed member 320, the second elastic member 600 is stretched and elastically deformed. When the unlocking key drives the second toothed member 220 to move in the direction away from the first toothed member 320, the restoring force of the second elastic member 600 drives the second toothed member 220 to move, so that the second toothed member 220 is separated from the first toothed member 320, realizing the switching of the neck brace from the first state to the second state.

[0057] Refer to Figures 1 - 2 and Figure 19 , one end of the strap is connected to the winding shaft 210, and the strap is wound around the winding shaft 210 by rotating the winding shaft 210. The rotation direction of the winding shaft 210 forms the winding direction, and the rotation direction opposite to this rotation direction becomes the release direction. The support member 100 is provided with a first limiting portion 110 and a second limiting portion 120, and there is a distance between the first limiting portion 110 and the second limiting portion 120; a limiting member 230 is provided on the winding shaft 210, and the limiting member 230 can move between the first limiting portion 110 and the second limiting portion 120 to limit the rotation amplitude of the winding shaft 210.

[0058] Specifically, the limiting member 230 is a nut, and the winding shaft 210 is provided with an external thread threadedly connected to the limiting member 230. When the winding shaft 210 rotates, it rotates relative to the limiting member 230 at the same time. Therefore, the limiting member 230 can move axially on the winding shaft 210. When the limiting member 230 abuts against the first limiting portion 110 or the second limiting portion 120, the first limiting portion 110 or the second limiting portion 120 blocks the movement of the limiting member 230, thereby restricting the rotation of the winding shaft 210. Therefore, by restricting the limiting member 230 to be between the first limiting portion 110 and the second limiting portion 120, the rotation amplitude of the winding shaft 210 is restricted.

[0059] In a further detailed structure, when the strap is in a state of maximum release, the limiting member 230 abuts against the first limiting portion 110. At this time, the strap is just fully released or there is still a part of the strap wound around the winding shaft 210. Therefore, when the winding shaft 210 rotates in the same direction, the rotation direction can only wind or release the strap, that is, the winding direction and the release direction of the winding shaft 210 do not change.

[0060] Specifically, a collar 212 is provided on the winding shaft 210. One end of the strap is connected to the collar 212, and the other end extends out of the outer side of the support member 100. Among them, there are two straps, and the two straps extend out from the left and right sides of the support member 100 respectively.

[0061] Refer to Figure 7 and Figure 8 , the operating member includes a knob 330. The knob 330 is provided on the outer side surface of the support member 100 and can rotate relative to the support member 100. By rotating the knob 330, the input torque can be realized. The first toothed member 320 is provided inside the support member 100 and is connected to the knob 330, so that the first toothed member 320 can respond to the torque of the knob 330. When the neck support is in the first state, rotating the knob 330 can drive the winding shaft 210 to rotate, realizing the winding or release of the strap.

[0062] Specifically, the operating member further includes a sun gear 340, a planet gear 350, and an internal gear ring 360. The internal gear ring 360 is sleeved on the outer side of the sun gear 340. The planet gear 350 is provided between the internal gear ring 360 and the sun gear 340, and one side of the planet gear 350 meshes with the internal gear ring 360, and the other side meshes with the sun gear 340, so that the sun gear 340, the planet gear 350, and the internal gear ring 360 form a planetary gear transmission mechanism. The sun gear 340 is connected to the knob 330, and the first toothed member 320 is provided on the internal gear ring 360, so that when the knob 330 is rotated, the first toothed member 320 is driven to rotate through the planetary gear transmission mechanism.

[0063] In the planetary gear transmission mechanism, the planet gear 350 is connected to the support member 100 and can rotate relative to the support member 100, and the internal gear ring 360 is sleeved on the outer side of the planet gear 350, so that the planetary gear transmission mechanism has a self-locking function. Furthermore, when the neck support is in the first state, due to the interference of the driving portion 300 on the winding portion 200, the first elastic member 240 cannot drive the winding portion 200 to rotate. In another embodiment, the first toothed member 320 and the knob 330 can also be driven by a worm and worm gear, and the worm and worm gear also have a self-locking function.

[0064] Refer to Figure 1 , the winding portion 200 further includes a volute spring (for example Figure 1In the first spring 240), one end of the spool 210 is provided with a first clamping portion 213, and a second clamping portion 141 is further provided on the inner side of the housing of the support member 100. One end of the scroll spring is clamped with the first clamping portion 213, and the other end of the scroll spring is clamped with the second clamping portion 141. The spool 210 can rotate under the drive of the drive portion 300 and can rotate back under the action of the scroll spring.

[0065] Specifically, one end of the scroll spring is clamped with the first clamping portion 213, and the other end of the scroll spring is clamped with the second clamping portion 141. The scroll spring is installed on the support member by clamping, which is convenient for the installation of the scroll spring. Among them, the spool 210 can rotate under the drive of the drive portion 300, and when the spool 210 rotates under the drive of the drive portion 300, the scroll spring deforms to store energy. When the drive portion is in the second state, the spool 210 can rotate back under the action of the scroll spring, so that the strap is released, so that the user can quickly release the strap through the unlocking key without manually operating the driving member to release the strap.

[0066] For example, when the spool 210 rotates under the drive of the drive portion 300, it rotates in the direction of winding the strap, and at the same time the scroll spring deforms. When the drive portion 300 switches from the first state to the second state, the first toothed member 320 and the second toothed member 220 are separated from each other. Under the action of the restoring force, the scroll spring drives the spool to rotate in the direction of releasing the strap, realizing the quick release of the strap.

[0067] The rotational movement of the winding portion 200 relative to the support member 100 includes a winding direction for winding the strap onto the winding portion 200 and a releasing direction for releasing the strap on the winding portion 200. Among them, when the winding portion 200 rotates relative to the support member 100 in the winding direction, the strap is wound onto the winding portion 200, so that the length of the strap outside the neck support is reduced; conversely, when the winding portion 200 rotates relative to the support member 100 in the releasing direction, the strap wound on the winding portion 200 is released, so that the length of the strap outside the neck support becomes longer. Therefore, the tightness of the neck support during wearing can be adjusted.

[0068] Refer to Figure 5 and Figure 6, the winding part 200 further includes a first elastic member 240. The first elastic member 240 is connected to the winding part 200. When the winding part 200 rotates in the winding direction, the first elastic member 240 can be elastically deformed. When the unlocking member switches the neck support to the second state, the elastic force of the first elastic member 240 is used to drive the winding part 200 to rotate in the release direction. Among them, when the neck support is in the first state, due to the interference of the driving part 300, therefore, the elastic force of the first elastic member 240 cannot drive the driving part 300 and the winding part 200 to rotate simultaneously. When the neck support is in the first state, after the driving part 300 drives the winding part 200 to rotate to the corresponding position, the driving part 300 can stop at the corresponding position. Moreover, during the rotation of the winding part 200, the first elastic member 240 is elastically deformed, that is, the first elastic member 240 stores energy. When the neck support is switched from the first state to the second state, the driving part 300 no longer interferes with the winding part 200. Therefore, the elastic force of the first elastic member 240 can drive the winding part 200 to rotate, that is, the energy stored when the winding part 200 winds the strap begins to be released, thereby driving the winding part 200 to quickly release the strap wound thereon. Moreover, the user only needs to switch the neck support from the first state to the second state to automatically and quickly complete the release of the strap.

[0069] In this embodiment, the user only needs to switch the neck support from the first state to the second state through the unlocking key to realize the quick and automatic release of the strap, which makes the user's operation convenient. That is, through the one-key unlocking of the unlocking key, the neck support can be quickly removed, reducing the time required to remove the neck support.

[0070] The winding part 200 further includes a push plate 260. The push plate 260 is sleeved on the winding shaft, and the push plate 260 is located between the second toothed member 220 and the unlocking key. One of the unlocking key and the push plate 260 is provided with a convex block 261, and the other is provided with an abutting portion 411. The convex block 261 abuts against the abutting portion 411. Therefore, when the unlocking key moves, the abutting position between the convex block 261 and the abutting portion 411 changes. Therefore, the unlocking key can push the push plate 260 to move, that is, the unlocking key is arranged to be movable relative to the neck support. By the movement of the unlocking key relative to the neck support, the convex block 261 and the abutting portion 411 slide relative to each other. Since the side of the push plate 260 facing away from the unlocking key abuts against the second toothed member 220, the movement of the unlocking key can drive the second toothed member 220 to move from the position separated from the first toothed member 320 to the position meshing with the first toothed member 320.

[0071] Specifically, the abutting portion 411 is an inclined surface or a protrusion with an inclined surface. Therefore, when the convex block 261 abuts against the abutting portion, that is, the convex block 261 abuts against the inclined surface, which facilitates the relative sliding between the convex block 261 and the abutting portion 411.

[0072] In a detailed embodiment, bumps are provided on both the push plate 260 and the unlocking key, and at least one side of each bump is an inclined surface. The inclined surfaces of the two bumps abut against each other, so as to increase the contact area between the two and reduce the wear when they slide relative to each other. Among them, in Figure 1 the bump on the unlocking key is the abutting portion 411, and the bump on the push plate 260 is the bump 261.

[0073] In a detailed embodiment of the present application, the winding shaft 210 is vertically arranged. Therefore, the movement direction of the second toothed member 220 is vertical, while the unlocking key is horizontally arranged. Through the arrangement of the bump 261 and the abutting portion 411, the movement amount of the unlocking key in the horizontal direction is converted into the movement amount of the push plate 260 in the vertical direction.

[0074] For example, the second toothed member 220 is a face gear. The second toothed member 220 is located below the first toothed member 320, and the teeth of the second toothed member 220 face the side of the first toothed member 320. The teeth of the first toothed member 320 are located on its outer surface. Therefore, it is convenient for the second toothed member 220 and the first toothed member 320 to enter a meshing state with each other. In another embodiment, both the first toothed member 320 and the second toothed member 220 are bevel gears, which can also facilitate the second toothed member 220 and the first toothed member 320 to enter a meshing state with each other.

[0075] Referring to Figures 9 - 18 , in an embodiment, the winding part 200 further includes a push plate 260. The push plate 260 is located on one side of the winding part close to the unlocking key, and the unlocking key is movably arranged on the support. The unlocking key includes a button 410. The movement of the button 410 includes a first position 412 and a second position 413. When the button 410 is in the first position 412, the button 410 can abut against the side of the push plate 260 close to the button 410, driving the push plate 260 to move. The push plate 260 can move the winding part 200 to a first state in which it cooperates with the driving part. When the button 410 is pressed to the second position 413, the winding part 200 moves to a second state in which it is separated from the driving part 300. By pressing the button 410, the button 410 can be moved from the first position 412 to the second position 413, or the button 410 can be moved from the second position 413 to the first position 412. Therefore, the neck support can be switched between the first state and the second state.

[0076] In one embodiment, the unlocking key includes a key 410, a third elastic member 420, and an abutting portion 411. A through hole is provided in the front shell 160 of the support member 100. The key 410 passes through the through hole and is disposed outside the front shell 160. The third elastic member 420 is disposed inside the front shell 160. One end of the third elastic member 420 abuts against the key 410, and the other end of the third elastic member 420 abuts against the support member. The abutting portion 411 is provided on the key 410. The movement of the key 410 includes a first position 412 and a second position 413. The elastic force of the third elastic member 420 can push up the key 410 to make the key 410 in the first position 412, and the abutting portion 411 can abut against the winding portion 200 to drive the winding portion 200 to move, so that the winding portion 200 moves to a first state in which it cooperates with the driving portion 300. When the key 410 is pressed to the second position 413, the abutting portion 411 moves away from the winding portion 200, so that the winding portion 200 moves to a second state in which it is separated from the driving portion 300. By pressing the key 410, the key 410 can be moved from the first position 412 to the second position 413, or the key 410 can be moved from the second position 413 to the first position 412, thus realizing the mutual switching of the neck support between the first state and the second state.

[0077] Specifically, referring to Figures 9 - 18 , the key 410 is movably disposed on the support member 100. The movement of the key 410 includes a first position 412 and a second position 413. When the key 410 is in the first position 412, the driving portion 300 and the winding portion 200 are in a first state of mutual cooperation. When the key 410 is in the second position 413, the driving portion 300 and the winding portion 200 are in a second state of being separated from each other.

[0078] The neck support needs to be maintained in the first state and the second state. Therefore, after the key 410 moves, it needs to be maintained in the first position 412 or the second position 413. The neck support further includes a positioning member 500. The positioning member 500 is used to limit the key 410 to be in the first position 412 and to limit the key 410 to be in the second position 413, so that the neck support can be maintained in the first state and the second state. One end of the positioning member 500 is connected to the support member 100, and the other end is connected to the key 410. When the key 410 is in the first position 412 or the second position 413, the positioning member 500 can position the key 410 in the corresponding position.

[0079] On one side of the button 410, there is a first chute 414. One end of the positioning member 500 is placed in the first chute 414 and can move along the first chute 414. There is a card slot 415 on the first chute 414, and the card slot 415 is near one end of the first chute 414. When the positioning member 500 is placed in the card slot 415, the button 410 is located at the first position 412. When the positioning member 500 is placed at the end of the first chute 414 away from the card slot 415, the button 410 is located at the second position 413. When the button 410 moves from the second position 413 to the first position 412, the positioning member 500 moves along the first chute 414 and gets stuck in the card slot 415, so that the neck support can be kept in the first state.

[0080] One end of the third elastic member 420 abuts against the button 410, and the other end abuts against the support member 100. When the button 410 moves from the second position 413 to the first position 412, the third elastic member 420 can be elastically deformed. The elastic force of the first elastic member 240 is used to drive the button 410 to move towards the second position 413. Among them, when driving the button 410 to make the positioning member 500 leave the position of the card slot 415, the elastic force of the third elastic member 420 can push the button 410 to move and make the positioning member 500 placed at the second position 413 of the first chute 414, realizing the switching of the neck support from the second state to the first state. The third elastic member 420 has an elastic structure, such as a compression spring, a disc spring, a spring sheet, rubber, and silica gel, etc.

[0081] There is a first guiding surface 416 on the first chute 414 for guiding the positioning member 500 into the card slot 415; there is also a second chute 417 on the button 410, and the positioning member 500 can move along the second chute 417 to the first chute 414; there is a second guiding surface 418 between the second chute 417 and the card slot 415 for guiding the positioning member 500 into the second chute 417.

[0082] In the above structure, when the button 410 is located at the second position 413, press the button 410, the button 410 moves, so that the positioning member 500 slides in the first chute 414 and enters the position of the card slot 415 under the guidance of the first guiding surface 416. After releasing the button 410, the button 410 remains at the first position 412. At this time, the neck support is in the first state. Press the button 410 again, the button 410 moves, and the positioning member 500 enters the second chute 417 under the guidance of the second guiding surface 418. Then release the button 410, and the button 410 moves under the elastic force of the third elastic member 420, so that the positioning member 500 enters the first chute 414 from the second chute 417, and the positioning member 500 is located at the second position 413 of the first chute 414. At this time, the neck support is in the second state. Through the unlocking key in the form of the button 410, the switching of the neck support between the first state and the second state is realized, and the structure is simple and the operation is convenient.

[0083] Among the above, the first elastic member 240 is preferably but not limited to a scroll spring, and the second elastic member 600 and the third elastic member 420 are preferably but not limited to compression springs.

[0084] Referring to Figures 1 - 2 and Figures 9 - 11 , in a detailed embodiment of the present application, the support member 100 includes a front shell 160 and a rear shell 170. There is a cavity between the front shell 160 and the rear shell 170. The unlocking key, the winding part 200, and the first toothed member 320 are arranged in this cavity. There is a through hole provided on the front shell 160. One end of the button 410 passes through this through hole and is placed outside the front shell 160, so that it is convenient to press the button 410. The knob 330 is connected to the outer side surface of the front shell 160. The sun gear 340, the planet gear 350, and the internal gear ring 360 are arranged in the cavity, and then through the fixed gearbox cover 130, the gearbox cover 130 is used to restrict the axial movement of the sun gear 340, the planet gear 350, and the internal gear ring 360, realizing the installation of the planetary gear transmission mechanism.

[0085] Referring to Figure 5 and Figure 6 , a rotating shaft bracket 140 is also fixed in the cavity between the front shell 160 and the rear shell 170. The winding shaft 210 is connected to the rotating shaft bracket 140, and the winding shaft 210 can rotate relative to the rotating shaft bracket 140. Then one end of the second elastic member 600 abuts against the second toothed member 220, and the other end abuts against the gearbox cover 130, so that the second elastic member 600 can push the second toothed member 220 to move.

[0086] One end of the first elastic member 240 is connected to the winding shaft 210 and is located at the end of the winding shaft 210 away from the second toothed member 220. There is a second clamping portion 141 provided on the rotating shaft bracket 140. The other end of the first elastic member 240 is connected to the second clamping portion 141 on the rotating shaft bracket 140, so that when the winding shaft 210 rotates in the winding direction, the first elastic member 240 can be elastically deformed. A fixing block 150 is fixed on the rotating shaft bracket 140 outside the first elastic member 240 to limit the movement space of the first elastic member 240, so that the first elastic member 240 can only be elastically deformed in a set direction.

[0087] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and inventive concepts of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A neck support, characterized in that, comprising: a support member and a strap; a wire winding portion provided on the support member and capable of rotating relative to the support member, the wire winding portion being connected to the strap and used for winding or releasing the strap by rotating relative to the support member; a driving portion provided on the support member, the neck support including a first state in which the driving portion and the wire winding portion cooperate with each other and a second state in which the driving portion and the wire winding portion are separated from each other, the driving portion being used for driving the wire winding portion to rotate in the first state; an unlocking key provided on the neck support and used for controlling the neck support to switch to the second state; wherein, the driving portion includes an operating member and a first toothed member, the first toothed member is connected to the operating member and can rotate under the drive of the operating member; the wire winding portion includes a wire winding shaft and a second toothed member, the wire winding shaft is used for winding or releasing the strap by rotating, and the second toothed member is in transmission cooperation with the wire winding shaft so that the second toothed member and the wire winding shaft can rotate together; the first toothed member is a movable member capable of moving relative to the operating member, or the second toothed member is a movable member capable of moving relative to the wire winding portion, and the first toothed member and the second toothed member are meshed or separated by the movement of the movable member, and the operating member is used for driving the wire winding portion to rotate in a state where the first toothed member and the second toothed member are meshed; the unlocking key is in transmission connection with the movable member and can drive the movable member to move so that the first toothed member and the second toothed member are meshed.

2. The neck support according to claim 1, characterized in that, the second toothed member has an axial movement amount relative to the wire winding shaft, the first toothed member is located on one side of the second toothed member in the axial direction, and the second toothed member is meshed or separated from the first toothed member by axial movement; the neck support further includes a second elastic member, the second elastic member abuts against the second toothed member, when the second toothed member is meshed with the first toothed member under the drive of the unlocking key, the second toothed member elastically deforms the second elastic member, and the elastic force of the second elastic member is used for driving the second toothed member to move to a position where it can be separated from the first toothed member.

3. The neck support according to claim 1, characterized in that, a first limiting portion and a second limiting portion are provided on the support member, and there is a distance between the first limiting portion and the second limiting portion; a limiting member is provided on the wire winding shaft, and the limiting member can move between the first limiting portion and the second limiting portion to limit the rotation amplitude of the wire winding shaft.

4. The neck support according to claim 1, characterized in that, a collar is provided on the wire winding shaft, one end of the strap is connected to the collar, and the other end extends out of the outside of the support member.

5. The neck support according to claim 1, characterized in that, The operating member includes a knob, which is provided on the outer side of the supporting member and can rotate relative to the supporting member. The first toothed member is disposed inside the supporting member and is connected to the knob to respond to the torque of the knob.

6. The neck support according to claim 5, wherein, the operating member further includes a sun gear, a planet gear and an internal gear ring. The sun gear is connected to the knob. The internal gear ring is sleeved outside the sun gear. The planet gear is disposed between the internal gear ring and the sun gear. One side of the planet gear meshes with the internal gear ring, and the other side meshes with the sun gear. The first toothed member is provided on the internal gear ring.

7. The neck support according to claim 2, wherein, the winding part further includes a volute spring. One end of the winding shaft is provided with a first clamping portion. A second clamping portion is further provided on the inner side of the housing of the supporting member. One end of the volute spring is clamped with the first clamping portion, and the other end of the volute spring is clamped with the second clamping portion. The winding shaft can rotate under the drive of the driving portion and can rotate back under the action of the volute spring.

8. The neck support according to claim 2, wherein, the winding part further includes a push plate. The push plate is sleeved on the winding shaft. The push plate is located between the second toothed member and the unlocking key. One of the unlocking key and the push plate is provided with a convex block, and the other is provided with an abutting portion. The convex block abuts on the abutting portion. The unlocking key is arranged to be movable relative to the neck support. By the movement of the unlocking key relative to the neck support, relative sliding occurs between the convex block and the abutting portion.

9. The neck support according to any one of claims 1-6, wherein, the rotational movement of the winding part relative to the supporting member includes a winding direction for winding the strap onto the winding part and a release direction for releasing the strap on the winding part. The winding part further includes: a first elastic member, connected to the winding part, which can elastically deform the first elastic member when the winding part rotates in the winding direction. When the unlocking key switches the neck support to the second state, the elastic force of the first elastic member is used to drive the winding part to rotate in the release direction.

10. The neck support according to any one of claims 1-6, wherein, the winding part further includes a push plate. The push plate is located on one side of the winding part close to the unlocking key. The unlocking key is movably arranged on the supporting member; the unlocking key includes a button, and the movement of the button includes a first position and a second position; when the button is in the first position, the button can abut against the side of the push plate close to the button to drive the push plate to move, and the push plate can move the winding part to a first state in which it cooperates with the driving part; when the button is pressed to the second position, the winding part moves to a second state in which it is separated from the driving part.

11. The neck support according to any one of claims 1-8, wherein, The unlocking key includes a button, a third elastic member, and an abutting portion. The front shell of the supporting member is provided with a through hole. The button passes through the through hole and is located outside the front shell. The third elastic member is arranged inside the front shell. One end of the third elastic member abuts against the button, and the other end of the third elastic member abuts against the supporting member; the abutting portion is arranged on the button. The movement of the button includes a first position and a second position; The elastic force of the third elastic member can push up the button so that the button is in the first position. The abutting portion can abut against the wire winding portion to drive the wire winding portion to move, so that the wire winding portion moves to a first state in which it cooperates with the driving portion; When the button is pressed to the second position, the abutting portion moves to separate from the wire winding portion, so that the wire winding portion moves to a second state in which it separates from the driving portion.

12. The neck support according to claim 11, characterized in that, the neck support further includes a positioning member. One end of the positioning member is connected to the supporting member, and the other end is connected to the button, for restricting the button to be in the first position and restricting the button to be in the second position; a first sliding groove is provided on one side surface of the button. One end of the positioning member is placed in the first sliding groove and can move along the first sliding groove. A clamping groove is provided on the first sliding groove, and the clamping groove is near one end of the first sliding groove. When the positioning member is placed in the clamping groove, the button is in the first position. When the positioning member is placed at the end of the first sliding groove away from the clamping groove, the button is in the second position.

13. The neck support according to claim 12, characterized in that, the first sliding groove is provided with a first guiding surface for guiding the positioning member into the clamping groove; a second sliding groove is further provided on the button. The positioning member can move along the second sliding groove to the first sliding groove; a second guiding surface for guiding the positioning member into the second sliding groove is provided between the second sliding groove and the clamping groove.

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