Posterior cranium turning-over protection structure
By designing a posterior cranial turnover protective structure including arc clamps and arcuate paths, the problem of head and neck distortion during the turnover is solved, effective protection of the patient's posterior cranial wound is achieved, and the consumption of manpower and financial resources is reduced. Convenient monitoring.
Patent Information
- Application Number
- CN202421131272.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing turnover assistive measures only solve the problem of the patient's pressure on the wound, while the problem of head and neck distortion during the turnover process still exists, and the commonly used artificial assistance brings manpower and financial resources to the patient's family.
Design a back cranial turnover protective structure, including two sets of parallel corresponding support components and back plates, and the support components are provided with arc clamps and arc paths. The arc clamps are connected to the back plate and are passed through arc paths and elastic mechanisms. Buffer and slow down to avoid distortion of head and neck.
It effectively avoids the patient's head and neck twist during the turnover, prevents the posterior cranial wound from being squeezed, reduces the burden on the patient's family, and facilitates medical staff to monitor the patient's affected area.
Smart Images
Figure CN222487915U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a posterior skull rollover protection structure. Background Art
[0002] The posterior cranial fossa contains the medulla oblongata, which is the respiratory center. After surgery, the patient should lie on the healthy side and should not press on the wound in the posterior cranial fossa when turning over. Otherwise, it will easily lead to changes in the respiratory rate and rhythm, or even respiratory arrest. When turning over, the patient should pay attention to prevent twisting of the head and neck to avoid excessive swing of the brain stem, which may cause adverse consequences.
[0003] Commonly used measures to assist patients in turning over include having them wear protective pillows or using manual assistance. The use of protective pillows only solves the problem of patients' wounds being pressed, but cannot prevent the problem of patients' head and neck twisting during turning over. Manual assistance often brings greater manpower and financial resources to the patient's family. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the existing turning assistance often only solves the problem of the patient's wound being pressed, while the problem of the patient's head and neck being twisted during the turning process still exists.
[0005] The utility model proposes a posterior skull turning protection structure, which can assist patients in turning over without consuming a lot of manpower and financial resources. At the same time, it will not squeeze the posterior skull wound of the patient to affect the worsening of the patient's condition, and will not cause the deflection between the head and trunk of the patient due to turning over, causing the head and neck to twist.
[0006] The technical solution adopted is: a posterior skull rollover protection structure, which includes two groups of support components and a back plate, the two groups of support components are arranged in parallel and correspondingly, and each group of support components is provided with an arc clamp and an arc path, the arc clamp can move along the arc path on the support component, and the arc clamp is on the arc path of the support component. During the process of moving from one end point of the arc path to another end point of the arc path, the support component buffers and slows down the arc clamp, and the arc clamp is connected to the back plate.
[0007] The utility model is connected to the back plate by an arc-shaped clamp, and the arc-shaped clamp can buffer and decelerate when moving along an arc-shaped path on the support component, thereby preventing the patient from rapidly turning over a large span, causing the back of the skull to shake violently and causing damage to the affected area; because the arc-shaped clamp is connected to the back plate, and the back plate is used to support the patient's back, the arc-shaped clamp will move along the support component only when the head and upper torso are turned over at the same time, thereby preventing deflection between the head and torso, causing twisting of the patient's head and neck.
[0008] According to a further embodiment of the technical solution of the utility model, the support assembly includes two support plates which are parallel to each other and correspond to each other; the two support plates are fixed to each other by a connecting block, and an installation gap is formed between the two support plates; a connecting plate is fixed at the central position of the support plate, and a roller which cooperates with the arc clamp is rotatably provided on the connecting plate; the support assembly also includes an elastic mechanism, which is arranged in the installation gap, and is used to buffer and slow down the arc clamp during its movement on the arc path.
[0009] In a further preferred embodiment of the technical solution of the utility model, a guide groove is provided on the edge of the arc-shaped clamp, and the guide groove is arc-shaped and engages with the roller in a rolling manner, so as to facilitate the movement of the arc-shaped clamp on the support assembly.
[0010] In a further embodiment of the technical solution of the utility model, the elastic mechanism includes a swing arm swingably arranged in the installation gap, and a tooth block elastically slidably arranged on the swing arm; one end of the swing arm is rotatably connected to the swing column, the swing column is fixed to the support plate, and the swing arm is connected to the connecting block through a lifting spring, which is used to prevent the patient from turning over quickly and drastically from one side to the other, causing excessive twisting of the head and neck, which is not conducive to the rehabilitation of the affected part of the posterior skull.
[0011] Further optimization of the technical solution of the utility model is that a first set of columns is fixedly provided at one end of the swing arm away from the swing column, and a second set of columns is fixed on the connecting block; one end of the lifting spring is sleeved on the first set of columns and contacts the swing arm, and the other end of the lifting spring is sleeved on the second set of columns and contacts the connecting block, which is used to fix the lifting spring.
[0012] In a further preferred embodiment of the technical solution of the utility model, a central sliding cavity is opened in the center of the bottom of the arc-shaped clamp, and side sliding cavities are symmetrically arranged on both sides of the central sliding cavity, and the side sliding cavities and the central sliding cavity are separated by feelers; the feelers cooperate with the tooth blocks, wherein a side of the feeler close to the central sliding cavity has an inclination angle and forms a wedge surface; a side of the feeler close to the side sliding cavity is arranged along the radial direction of the arc-shaped clamp, and is used to cooperate with the support assembly and slide on the support assembly.
[0013] In a further preferred embodiment of the technical solution of the utility model, a slide groove is provided on the swing arm, and a sliding part is provided at one end of the gear block, and the sliding part is slidably engaged with the slide groove;
[0014] One side of the tooth block facing the center of the arc-shaped clamp is arranged along the radial direction of the arc-shaped clamp, and the other side has an angle with the radial direction of the arc-shaped clamp to form an inclined surface;
[0015] A protrusion is fixed on the swing arm, a third set of columns facing the gear block is fixed on the protrusion, a fourth set of columns facing the third set of columns is fixed on the gear block, and a yield spring is arranged between the third set of columns and the fourth set of columns;
[0016] One end of the yield spring is inserted into the fourth sleeve column and contacts the tooth block, and the other end of the yield spring is inserted into the third sleeve column and contacts the protrusion, which is used to fix the yield spring between the third sleeve column and the fourth sleeve column. At the same time, the third sleeve column and the fourth sleeve column have a guiding function.
[0017] In a further preferred embodiment of the technical solution of the utility model, the two groups of support components are connected by multiple groups of telescopic components, and the telescopic components include telescopic columns fixed on the support plates in one group of support components, and sleeve columns fixed on the support plates in the other group of support components; the sleeve columns and the telescopic columns are slidably matched to adjust the distance between the two groups of support components according to the needs of the patient.
[0018] Further optimization of the technical solution of the utility model is that one side of the arc-shaped clamp on one group of support components is fixedly connected to the back plate through a support rod, and the other side is provided with a second cloth pocket; one side of the arc-shaped clamp on the other group of support components is provided with a first cloth pocket, the first cloth pocket and the second cloth pocket are telescopically matched, and a hollow portion is provided at the central position between the first cloth pocket and the second cloth pocket, which is used to adjust the first cloth pocket and the second cloth pocket in accordance with the distance between the two groups of support components, so as to avoid squeezing of the patient's posterior skull wound, affecting the deterioration of the patient's condition, and also facilitate medical staff to monitor the patient's affected area.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] 1. The utility model buffers and decelerates the arc-shaped clamp moving on the support assembly through the cooperation of the elastic mechanism in the support assembly, thereby preventing the patient from rapidly turning over a large span, causing the back of the skull to shake violently and causing damage to the affected area.
[0021] 2. The utility model is connected to the back plate through an arc-shaped clamp, and the back plate is used to support the patient's back. Therefore, only when the head and upper torso are turned over at the same time, the arc-shaped clamp will move along the support component to avoid deflection between the head and torso, which may cause the patient's head and neck to twist.
[0022] 3. The utility model uses the hollow parts on the first cloth bag and the second cloth bag to prevent the wound on the back of the patient's head from being squeezed, which would affect the deterioration of the patient's condition and also facilitate medical staff to monitor the patient's affected area. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of this embodiment;
[0024] Figure 2 It is an exploded view of part of the structure of this embodiment;
[0025] Figure 3 It is a bottom view of a partial structural exploded view of this embodiment;
[0026] Figure 4 is a cross-sectional view of the structure of the arc-shaped clamp part of this embodiment;
[0027] Figure 5 is a partial structural schematic diagram of the support assembly in this embodiment;
[0028] Figure 6 It is an exploded view of the structure of the support assembly in this embodiment;
[0029] Figure 7 is a front view of the structure of the elastic mechanism portion of this embodiment;
[0030] Figure 8 is a side view of the structure of the elastic mechanism in this embodiment;
[0031] Explanation of the reference numerals: 100-support assembly, 101-support plate, 102-installation gap, 103-connecting block, 104-roller, 105-connecting plate, 106-swing arm, 107-swing column, 108-yield spring, 109-tooth block, 110-lifting spring, 200-arc clamp, 201-central sliding cavity, 202-side sliding cavity, 203-tentacle, 204-guide groove, 300-sleeve column, 400-telescopic column, 500-support rod, 600-first cloth bag, 700-second cloth bag, 800-back plate. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-8 And embodiments, the utility model is further described in detail. Example 1
[0033] like Figure 1-8 As shown, a posterior skull rollover protection structure of the present embodiment comprises two groups of support components 100, the two groups of support components 100 are arranged in parallel and correspondingly, each group of support components 100 is provided with an arc clamp 200 and an arc path, and the arc clamp 200 moves along the arc path on the support component 100.
[0034] like Figure 1 As shown, in this embodiment, the protective structure further includes a back plate 800 , and the back plate 800 is fixedly connected to the arc-shaped clamp 200 on one group of the support assemblies 100 through a support rod 500 .
[0035] In this embodiment, since the arc clamp 200 is connected to the back plate 800, and the back plate 800 is used to support the patient's back, the arc clamp 200 will move along the support assembly 100 only when the head and upper torso are flipped over at the same time, thereby avoiding deflection between the head and torso, which may cause twisting of the patient's head and neck.
[0036] like Figure 5 As shown, the support assembly 100 includes two parallel and corresponding support plates 101; the two support plates 101 are fixed to each other by a connecting block 103, and an installation gap 102 is formed between the two support plates 101; a connecting plate 105 is fixed at the central position of the support plate 101, and a roller 104 that cooperates with the arc clamp 200 is rotatably provided on the connecting plate 105.
[0037] The two support plates 101 are correspondingly provided with arc-shaped notches, and the arc-shaped notches are arc-shaped paths for the arc-shaped clamp 200 to move.
[0038] The support assembly 100 also includes an elastic mechanism, which is arranged in the installation gap 102 and is used to buffer and slow down the arc clamp 200 when the arc clamp 200 moves from one end point to another end point of the arc path, thereby preventing the patient from flipping over a large span rapidly, causing severe shaking of the posterior skull and causing damage to the affected area.
[0039] like Figure 2 As shown, the installation gap 102 formed between the two support plates 101 provides an installation space for the elastic mechanism; the rolling connection is achieved by the cooperation of the roller 104 and the arc clamp 200. Compared with the conventional sliding cooperation, the friction resistance is smaller and the wear is lighter, thereby extending the service life; in addition, under smaller friction, the noise generated is also smaller.
[0040] The elastic mechanism can provide a deceleration buffer force when the patient turns over from one side to the other, thereby preventing the patient from turning over quickly and drastically from one side to the other, causing excessive twisting of the head and neck, which is not conducive to the recovery of the affected part of the posterior skull.
[0041] like Figure 2 and Figure 3 As shown, a guide groove 204 is provided at the edge of the arc-shaped clamp 200 , and the guide groove 204 is rollingly engaged with the roller 104 , and the guide groove 204 is in an arc shape.
[0042] In this embodiment, the roller 104 rolls and slides in the arc-shaped guide groove 204, so that the head and neck of the patient can rotate in coordination with the patient's turning over. The curvature of the guide groove 204 is used to limit the amplitude of the patient's turning over, ensuring that the twisting angle is not too large when the patient turns from one side to the other.
[0043] The center of the arc-shaped guide groove 204 is concentric with the edge center of the arc clamp 200 , thereby ensuring that the arc clamp 200 is always close to the edge of the support plate 101 when it moves along the arc path on the support plate 101 in the support assembly 100 .
[0044] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the elastic mechanism includes a swing arm 106 swingably disposed in the installation gap 102 , and a tooth block 109 elastically slidably disposed on the swing arm 106 .
[0045] One end of the swing arm 106 is rotatably connected to the swing column 107 . The swing column 107 is fixed on the support plate 101 , and the swing arm 106 is connected to the connecting block 103 via a lifting spring 110 .
[0046] In this embodiment, the tooth block 109 can slide on the swing arm 106. When the arc clamp 200 moves and applies a pressure to the tooth block 109, because the pressure is not enough to drive the tooth block 109 to slide on the swing arm 106 (the sliding resistance is greater than the component force of the pressure along the direction of the swing arm 106); therefore, the tooth block 109 will correspondingly transmit the pressure to the swing arm 106, causing the swing arm 106 to rotate around the swing column 107 (the elastic force of the lifting spring 110 is less than the component force of the pressure perpendicular to the direction of the swing arm 106), thereby compressing the lifting spring 110 toward the connecting block 103.
[0047] like Figure 6 As shown, a first set of columns is fixedly provided at one end of the swing arm 106 away from the swing column 107, and a second set of columns is fixed on the connecting block 103; one end of the lifting spring 110 is sleeved on the first set of columns and contacts the swing arm 106, and the other end of the lifting spring 110 is sleeved on the second set of columns and contacts the connecting block 103.
[0048] When the pressure exerted by the arc clamp 200 on the tooth block 109 disappears, the swing arm 106 and the tooth block 109 are reset by the reset elastic force of the lifting spring 110. Due to the existence of the first set of columns and the second set of columns, and the first set of columns and the second set of columns are respectively fixed on the swing arm 106 and the connecting block 103, the two ends of the lifting spring 110 are respectively constrained by the first set of columns and the second set of columns, so that the lifting spring 110 can always establish an elastic connection relationship between the swing arm 106 and the connecting block 103.
[0049] like Figure 3 and Figure 4 As shown, a central sliding cavity 201 is provided at the bottom center of the arc-shaped clamp 200, and side sliding cavities 202 are symmetrically provided on both sides of the central sliding cavity 201, and the side sliding cavities 202 and the central sliding cavity 201 are separated by feelers 203; the feelers 203 cooperate with the tooth block 109, wherein a side of the feeler 203 close to the central sliding cavity 201 has an inclined angle and forms a wedge surface; a side of the feeler 203 close to the side sliding cavity 202 is arranged along the radial direction of the arc-shaped clamp 200 and forms a radial surface.
[0050] In this embodiment, in the initial state, the arc clamp 200 is located in the center of the support plate 101, and the tooth blocks 109 on both sides are located between the two feelers 203; when the arc clamp 200 rotates to one side, the wedge surface of the opposite feeler 203 will cooperate with the tooth block 109 on that side, and when the feeler 203 rotates, a pressure is applied to the tooth block 109 through the wedge surface, and the pressure is transmitted to the tooth block 109 through the wedge surface and decomposed into two components, one of which is along the length direction of the swing arm 106, and is intended to drive the tooth block 109 to slide along the length direction of the swing arm 106; the other component is along the length direction perpendicular to the swing arm 106, and is intended to drive the tooth block 109 and the swing arm 106 to rotate around the swing column 107.
[0051] Since the wedge surface has an inclined angle, the component force perpendicular to the length direction of the swing arm 106 is greater than the elastic force of the lifting spring 110. At the same time, the component force along the length direction of the swing arm 106 is less than the resistance of the tooth block 109 sliding on the swing arm 106. Therefore, the swing arm 106 and the tooth block 109 will swing downward around the swing column 107 at the same time, so that the tooth block 109 on this side is separated from the feeler 203 on the same side. In this process, the lifting spring 110 on this side will be compressed due to the downward flipping of the swing arm 106.
[0052] Once the feeler 203 passes over the tooth block 109 on the same side, the lifting spring 110 drives the swing arm 106 and the tooth block 109 to rotate upward and reset.
[0053] After the feeler 203 on the opposite side passes over the tooth block 109 on the opposite side, if the arc clamp 200 is to rotate in the opposite direction again, the radial surface of the feeler 203 opposite to the wedge surface cooperates with the tooth block 109. Since the angle of the radial surface is different from that of the wedge surface, the pressure exerted by the feeler 203 on the tooth block 109 can also be decomposed into two components, one of which is along the length direction of the swing arm 106, and the other is along the length direction perpendicular to the swing arm 106; and the two components of force decomposed by the radial surface are distributed in different sizes, and the component along the length direction of the swing arm 106 is greater than the component of force along the length direction of the swing arm 106. 06, the tooth block 109 will retreat along the length direction of the swing arm 106 to make way. In this process, the tooth block 109 overcomes its sliding resistance and buffers and slows down the feeler 203, thereby finally achieving the effect of buffering and slowing down the arc clamp 200. In the process of tooth block 109 retreating, since the feeler 203 continuously rotates around the center of the arc clamp 200, the contact angle between the radial surface and the tooth block 109 continuously changes, realizing the transition from surface contact to line contact, and the change in contact angle will also cause the radial surface to finally separate from the tooth block 109.
[0054] The purpose of such a setting is that when the patient's head and neck drive the arc clamp 200 to rotate, the angle from the middle position to one side to the end point of the arc path is the maximum free rotation angle; if you want to rotate from one side to the other side and flip at a large angle, there will be a buffering and deceleration process in the middle to prevent the patient from flipping quickly and drastically from one side to the other, causing excessive twisting of the head and neck.
[0055] In this embodiment, a slide groove is provided on the swing arm 106, and a sliding portion is provided at one end of the tooth block 109, and the sliding portion is slidably engaged with the slide groove.
[0056] like Figure 2 As shown, one side of the tooth block 109 facing the center of the arc clamp 200 is arranged along the radial direction of the arc clamp 200 and forms a reverse radial surface; the other side has an angle with the radial direction of the arc clamp 200 and forms an inclined surface.
[0057] like Figure 7 As shown, a protrusion is fixed on the swing arm 106, a third set of columns facing the tooth block 109 is fixed on the protrusion, a fourth set of columns facing the third set of columns is fixed on the tooth block 109, and a yield spring 108 is arranged between the third set of columns and the fourth set of columns; one end of the yield spring 108 is inserted into the fourth set of columns and contacts the tooth block 109, and the other end of the yield spring 108 is inserted into the third set of columns and contacts the protrusion.
[0058] In this embodiment, the characteristic of the inclined surface of the tooth block 109 can make the component of the total pressure perpendicular to the swing arm 106 larger and the component along the length direction of the swing arm 106 smaller through the cooperation of the inclined surface and the wedge surface during the cooperation between the tooth block 109 and the feeler 203.
[0059] Correspondingly, after the feeler 203 on the opposite side passes over the tooth block 109 on the opposite side, if the arc clamp 200 wants to rotate in the opposite direction again, the radial surface of the feeler 203 opposite to the wedge surface cooperates with the reverse radial surface of the tooth block 109, and the component force along the length direction of the swing arm 106 is greater than the resistance of the tooth block 109 sliding on the swing arm 106, and the tooth block 109 will retreat along the length direction of the swing arm 106 to make way.
[0060] The resistance to the sliding of the tooth block 109 on the swing arm 106 includes friction and the elastic force of the yield spring 108, among which the elastic force of the yield spring 108 plays a dominant role. In the process of the tooth block 109 overcoming its sliding resistance and buffering and decelerating the feeler 203, the tooth block 109 needs to continuously compress the yield spring 108 to achieve sliding along the length direction of the swing arm 106. Since the compression of the yield spring 108 can provide elastic buffering force, the feeler 203 is finally buffered and decelerated through the elastic yield of the tooth block 109.
[0061] like Figure 1As shown, the two groups of support assemblies 100 are connected via a plurality of telescopic assemblies, the telescopic assemblies comprising a telescopic column 400 fixed on a support plate 101 in one group of support assemblies 100, and a sleeve column 300 fixed on a support plate 101 in another group of support assemblies 100; the sleeve column 300 slidably cooperates with the telescopic column 400.
[0062] By cooperating with the support assembly 100 through the telescopic assembly in which multiple sets of sleeve columns 300 and telescopic columns 400 are slidably matched, the spacing between the two sets of support assemblies 100 can be adjusted. Since each patient has a different body shape, it can fit the patient to the greatest extent, making the patient more comfortable during use and facilitating the patient's recovery.
[0063] In this embodiment, a second cloth pocket 700 is provided on the other side of a group of support components 100 fixedly connected to the back plate 800, and a first cloth pocket 600 is provided on one side of the arc clamp 200 on the other group of support components 100. The first cloth pocket 600 is sleeved on the second cloth pocket 700, and the first cloth pocket 600 and the second cloth pocket 700 are telescopically matched.
[0064] A retractable sliding rod structure is arranged between the arc-shaped clamps 200 on the two groups of support assemblies 100, and the sliding rod structure includes a group of sleeve rods fixed on one of the arc-shaped clamps 200 and a group of sleeve rods fixed on the other arc-shaped clamp 200, and the two groups of sleeve rods slide with each other; the first cloth bag 600 is arranged on one group of sleeve rods, and the second cloth bag 700 is arranged on the other group of sleeve rods, and a hollow portion is arranged at the central position between the first cloth bag 600 and the second cloth bag 700.
[0065] The hollowed-out portion in the center can prevent the wound on the back of the patient's skull from being squeezed, which would otherwise affect the deterioration of the patient's condition, and also makes it easier for medical staff to monitor the patient's affected area.
[0066] The specific method of using the posterior skull turning protection structure of the present embodiment is: first, according to the patient's own situation, by adjusting the distance between the two groups of support components 100, the extension and contraction of the first cloth bag 600 and the second cloth bag 700, and the distance between the two groups of arc clamps 200 are adjusted to a suitable position to ensure that the patient's head, neck and upper torso can rotate at the same time when the patient turns over, to prevent excessive twisting of the head and neck.
[0067] When in use, the wound on the back of the patient's head is adjusted to the hollow parts of the first cloth bag 600 and the second cloth bag 700 to prevent the wound on the back of the patient's head from being squeezed, thereby affecting the deterioration of the patient's condition. The backboard 800 supports the patient's back, so that when the patient turns over, it can ensure that the patient's upper torso drives the head and neck to turn over synchronously, thereby avoiding excessive twisting of the head and neck.
[0068] The above embodiments are only for illustrating the technical idea of the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A posterior skull rollover protection structure, characterized in that: The protective structure comprises two groups of support components (100) and a back plate (800), the two groups of support components (100) being arranged in parallel and correspondingly, each group of support components (100) being provided with an arc clamp (200) and an arc path, the arc clamp (200) being able to move along the arc path on the support component (100), and in the process of the arc clamp (200) moving from one end point of the arc path to another end point of the arc path on the arc path of the support component (100), the support component (100) buffers and decelerates the arc clamp (200), and the arc clamp (200) is connected to the back plate (800).
2. The posterior skull rollover protection structure according to claim 1, characterized in that: The support assembly (100) comprises two support plates (101) which are parallel to each other and correspond to each other; the two support plates (101) are fixed to each other via a connecting block (103), and an installation gap (102) is formed between the two support plates (101); a connecting plate (105) is fixed at the central position of the support plate (101), and a roller (104) which cooperates with the arc-shaped clamp (200) is rotatably arranged on the connecting plate (105); the support assembly (100) further comprises an elastic mechanism, which is arranged in the installation gap (102).
3. The posterior cranial rollover protection structure according to claim 2, characterized in that: A guide groove (204) is provided on the edge of the arc-shaped clamp (200), and the guide groove (204) and the roller (104) are rollingly engaged with each other, and the guide groove (204) is in an arc shape.
4. The posterior skull rollover protection structure according to claim 2, characterized in that: The elastic mechanism comprises a swing arm (106) swingably disposed in the installation gap (102), and a tooth block (109) elastically slidably disposed on the swing arm (106); One end of the swing arm (106) is rotatably connected to the swing column (107), the swing column (107) is fixed on the support plate (101), and the swing arm (106) is connected to the connecting block (103) via a lifting spring (110).
5. The posterior skull rollover protection structure according to claim 2, characterized in that: The elastic mechanism comprises a swing arm (106) swingably disposed in the installation gap (102), and a tooth block (109) elastically slidably disposed on the swing arm (106); One end of the swing arm (106) is rotatably connected to the swing column (107), the swing column (107) is fixed on the support plate (101), and the swing arm (106) is connected to the connecting block (103) via a lifting spring (110).
6. The posterior skull rollover protection structure according to claim 4, characterized in that: A first set of columns is fixedly provided at one end of the swing arm (106) away from the swing column (107), and a second set of columns is fixed on the connecting block (103); one end of the lifting spring (110) is sleeved on the first set of columns and contacts the swing arm (106), and the other end of the lifting spring (110) is sleeved on the second set of columns and contacts the connecting block (103).
7. The posterior skull rollover protection structure according to claim 4, characterized in that: A central sliding cavity (201) is provided at the center of the bottom of the arc-shaped clamp (200), and side sliding cavities (202) are symmetrically provided on both sides of the central sliding cavity (201), and the side sliding cavities (202) and the central sliding cavity (201) are separated by feelers (203); The feeler (203) cooperates with the tooth block (109), wherein a side of the feeler (203) close to the central sliding cavity (201) has an inclined angle and forms a wedge surface; and a side of the feeler (203) close to the side sliding cavity (202) is arranged along the radial direction of the arc-shaped clamp (200).
8. The posterior cranial rollover protection structure according to claim 4, characterized in that: A slide groove is provided on the swing arm (106), and a sliding portion is provided at one end of the tooth block (109), and the sliding portion is slidably engaged with the slide groove; One side of the tooth block (109) facing the center of the arc-shaped clamp (200) is arranged along the radial direction of the arc-shaped clamp (200), and the other side has an angle with the radial direction of the arc-shaped clamp (200) to form an inclined surface; A protrusion is fixed on the swing arm (106), a third set of columns facing the gear block (109) is fixed on the protrusion, a fourth set of columns facing the third set of columns is fixed on the gear block (109), and a yield spring (108) is provided between the third set of columns and the fourth set of columns; One end of the give-way spring (108) is inserted into the fourth sleeve column and contacts the tooth block (109), and the other end of the give-way spring (108) is inserted into the third sleeve column and contacts the protrusion.
9. The posterior skull rollover protection structure according to claim 1, characterized in that: The two groups of support assemblies (100) are connected via a plurality of groups of telescopic assemblies, the telescopic assemblies comprising a telescopic column (400) fixed on a support plate (101) in one group of support assemblies (100), and a sleeve column (300) fixed on a support plate (101) in the other group of support assemblies (100); the sleeve column (300) is slidably matched with the telescopic column (400).
10. The posterior skull rollover protection structure according to claim 1, characterized in that: One side of the arc-shaped clamp (200) on one group of support assemblies (100) is fixedly connected to the back plate (800) via a support rod (500), and the other side is provided with a second cloth bag (700); one side of the arc-shaped clamp (200) on the other group of support assemblies (100) is provided with a first cloth bag (600), the first cloth bag (600) and the second cloth bag (700) can be telescopically matched, and a hollow portion is provided at the central position between the first cloth bag (600) and the second cloth bag (700).