Novel two-piece type cylindrical air bag
By hiding the longitudinal welded edge of the cylindrical airbag inside the airbag cavity and increasing the width of the airbag, the problem of insufficient volume and contact area in the existing technology is solved, the measurement accuracy and comfort are improved, and the effectiveness of the wristwatch-style testing instrument is enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-04-07
AI Technical Summary
Existing wristwatch-style testing instruments use cylindrical airbags with longitudinal welded or bonded edges located at the outermost edge, resulting in a small effective volume and contact area. This affects measurement accuracy and comfort, and the hard edges may scratch the user.
A novel two-piece cylindrical airbag is designed, which hides the longitudinal welded edge inside the airbag cavity. By changing the structure of the upper and lower sheets, the width of the airbag is increased, thereby increasing the inflated volume and contact area. At the same time, a reinforcing strip is set inside the airbag cavity to prevent adhesion.
The increased airbag volume and contact area with the measured part enhance measurement accuracy and comfort, prevent the welded edge from contacting the human body, and improve measurement efficiency and user comfort.
Smart Images
Figure CN224085317U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air air bag, especially wristwatch type detection instrument and similar products such as cylindrical air bag used in medical health field. BACKGROUND
[0002] The existing wristwatch type detection instrument uses the inflatable air bag basically all miniature cylindrical arc air bag, such as Figure 1 、 Figure 2 、 Figure 3 As shown, Figure 1 It is the front view, Figure 2 It is Figure 1 After view, Figure 3 It is the transverse section view after air bag inflation, the prior art air bag is composed of upper sheet 1 and lower sheet 2, and the upper sheet 1 and the lower sheet 2 are fused or bonded together along the edge end of the upper sheet 1 and the lower sheet 2 to become air bag by fusing or bonding, the air bag has a ring of fusion edge or bonding edge 3, and the air bag needs to be clamped or fixed on the wrist strap by buckle 5 when cooperating with the wristwatch type detection instrument, the width of the air bag should be equal to or less than the width of the wrist strap, and the width of the air bag includes the width of the air bag cavity and the width of the two longitudinal fusion edges 3 or bonding edges, so that the two longitudinal fusion edges or bonding edges occupy a certain width space, but do not contribute to the inflation and volume expansion of the air bag, that is to say, although the total width of the air bag including the fusion edge or bonding edge is as wide as the wrist strap, the width of the air bag when inflated is less than the width of the wrist strap, because the two longitudinal fusion edges or bonding edges occupy a certain width, so that the effective volume of the air bag and the actual contact surface of the air bag and the measured part are small, the effective compression of the related blood vessels is small, and the measurement accuracy and efficiency of the instrument are affected.
[0003] In addition, the protruding fusion edge of the prior art cylindrical air bag is hard, and often touches the contact part of the human body during detection, which brings discomfort to the user, especially when used for children, because the skin is tender, often causing scratches or stings. UTILITY MODEL CONTENT
[0004] The utility model discloses a novel two-piece type cylindrical air bag, which overcomes the defects of the prior art, changes the upper sheet and the lower sheet of the air bag and the process, makes the two longitudinal fusion edges or bonding edges of the cylindrical air bag no longer located at the outermost edge of the cylindrical air bag, changes the upper sheet and the lower sheet, makes the practical width of the cylindrical air bag of the utility model larger, greatly increases the volume of the air bag after being inflated and the actual contact area with the measured part, increases the effective compression on the related blood vessels, improves the measurement accuracy and measurement efficiency of the instrument. Meanwhile, the comfort during use can be improved, and the fusion edge and the human body contact part are prevented from being touched.
[0005] The utility model discloses a novel two-piece type cylindrical air bag, which overcomes the defects of the prior art, changes the upper sheet and the lower sheet of the air bag and the process, makes the two longitudinal fusion edges or bonding edges of the cylindrical air bag no longer located at the outermost edge of the cylindrical air bag, changes the upper sheet and the lower sheet, makes the practical width of the cylindrical air bag of the utility model larger, greatly increases the volume of the air bag after being inflated and the actual contact area with the measured part, increases the effective compression on the related blood vessels, improves the measurement accuracy and measurement efficiency of the instrument. Meanwhile, the comfort during use can be improved, and the fusion edge and the human body contact part are prevented from being touched.
[0006] The utility model discloses a novel two-piece type cylindrical air bag, which overcomes the defects of the prior art, changes the upper sheet and the lower sheet of the air bag and the process, makes the two longitudinal fusion edges or bonding edges of the cylindrical air bag no longer located at the outermost edge of the cylindrical air bag, changes the upper sheet and the lower sheet, makes the practical width of the cylindrical air bag of the utility model larger, greatly increases the volume of the air bag after being inflated and the actual contact area with the measured part, increases the effective compression on the related blood vessels, improves the measurement accuracy and measurement efficiency of the instrument. Meanwhile, the comfort during use can be improved, and the fusion edge and the human body contact part are prevented from being touched.
[0007] The utility model discloses a novel two-piece type cylindrical air bag, which overcomes the defects of the prior art, changes the upper sheet and the lower sheet of the air bag and the process, makes the two longitudinal fusion edges or bonding edges of the cylindrical air bag no longer located at the outermost edge of the cylindrical air bag, changes the upper sheet and the lower sheet, makes the practical width of the cylindrical air bag of the utility model larger, greatly increases the volume of the air bag after being inflated and the actual contact area with the measured part, increases the effective compression on the related blood vessels, improves the measurement accuracy and measurement efficiency of the instrument. Meanwhile, the comfort during use can be improved, and the fusion edge and the human body contact part are prevented from being touched.
[0008] The utility model discloses a novel two-piece type cylindrical air bag, which overcomes the defects of the prior art, changes the upper sheet and the lower sheet of the air bag and the process, makes the two longitudinal fusion edges or bonding edges of the cylindrical air bag no longer located at the outermost edge of the cylindrical air bag, changes the upper sheet and the lower sheet, makes the practical width of the cylindrical air bag of the utility model larger, greatly increases the volume of the air bag after being inflated and the actual contact area with the measured part, increases the effective compression on the related blood vessels, improves the measurement accuracy and measurement efficiency of the instrument. Meanwhile, the comfort during use can be improved, and the fusion edge and the human body contact part are prevented from being touched.
[0009] The utility model discloses a novel two-piece type cylindrical air bag, which overcomes the defects of the prior art, changes the upper sheet and the lower sheet of the air bag and the process, makes the two longitudinal fusion edges or bonding edges of the cylindrical air bag no longer located at the outermost edge of the cylindrical air bag, changes the upper sheet and the lower sheet, makes the practical width of the cylindrical air bag of the utility model larger, greatly increases the volume of the air bag after being inflated and the actual contact area with the measured part, increases the effective compression on the related blood vessels, improves the measurement accuracy and measurement efficiency of the instrument. Meanwhile, the comfort during use can be improved, and the fusion edge and the human body contact part are prevented from being touched.
[0010] The utility model discloses a novel two-piece type cylindrical air bag, which overcomes the defects of the prior art, changes the upper sheet and the lower sheet of the air bag and the process, makes the two longitudinal fusion edges or bonding edges of the cylindrical air bag no longer located at the outermost edge of the cylindrical air bag, changes the upper sheet and the lower sheet, makes the practical width of the cylindrical air bag of the utility model larger, greatly increases the volume of the air bag after being inflated and the actual contact area with the measured part, increases the effective compression on the related blood vessels, improves the measurement accuracy and measurement efficiency of the instrument. Meanwhile, the comfort during use can be improved, and the fusion edge and the human body contact part are prevented from being touched.
[0011] The two-piece cylindrical air bag is characterized in that the air bag end is integrally formed by butt jointing and fixing the upper sheet and the lower sheet.
[0012] The two-piece cylindrical air bag is characterized in that the reinforcing strip is fixed in the air bag cavity and radiates from the air inlet.
[0013] The two-piece cylindrical air bag is characterized in that the reinforcing strip is an elongated column fixed on the inner surface of the upper sheet or the lower sheet.
[0014] The two-piece cylindrical air bag is characterized in that the two longitudinal butt joint edges or bonding edges are no longer located at the outermost edge of the cylindrical air bag, which can improve the comfort during use and avoid the butt joint edges from touching the human body. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a front view of a prior art cylindrical arc-shaped air bag.
[0016] Figure 2 is Figure 1 a rear view.
[0017] Figure 3 is a transverse cross-sectional view of the prior art cylindrical arc-shaped air bag after inflation.
[0018] Figure 4 is a front view of a new two-piece cylindrical air bag according to the present application.
[0019] Figure 5 is Figure 4 a schematic view of the upper sheet of the cylindrical air bag.
[0020] Figure 6 is Figure 4 a schematic view of the lower sheet of the cylindrical air bag.
[0021] Figure 7 is Figure 4 a schematic view of the cylindrical air bag after butt jointing and fixing the upper sheet and the lower sheet.
[0022] Figure 8 is Figure 4 a schematic view of the cylindrical air bag after butt jointing and fixing the upper sheet and the lower sheet.
[0023] Figure 9 is Figure 4 the A-A sectional view shown.
[0024] Figure 10 is Figure 9 the enlarged view.
[0025] Figure 11 is a front view of a second embodiment of the novel two-piece cylindrical air bag of the present application.
[0026] Figure 12 is a front view of a third embodiment of the novel two-piece cylindrical air bag of the present application.
[0027] Figure 13 is a schematic diagram of the semi-finished product air bag cylinder of the third embodiment of the present application.
[0028] Figure 14 is Figure 12 the B-B sectional view shown.
[0029] Figure 15 is Figure 14 the enlarged view. DETAILED DESCRIPTION
[0030] The present application will be further described in detail below with reference to the embodiments and the accompanying drawings.
[0031] Referring to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 is a first embodiment of the novel two-piece cylindrical air bag of the present application. It comprises a cylindrical air bag 1, which has a cylindrical air bag head end 11 and a cylindrical air bag tail end 12. The cylindrical air bag head end 11 has an extension 11A, and a gas inlet nozzle Z1 and a test nozzle Z2 are arranged on the extension 11A. The cylindrical air bag 1 is composed of an upper sheet 13 and a lower sheet 14. Since this embodiment is a cylindrical air bag, the upper sheet 13 and the lower sheet 14 are generally rectangular in shape in the unfolded state, as shown in Figure 5 , Figure 6As shown, the width of the upper sheet 13 of this utility model is smaller than the width of the lower sheet 14, that is, the upper sheet 13 is narrower than the lower sheet 14. The upper sheet 13 has an upper fusion portion 131, an upper lower fusion portion 132, an upper left fusion portion 133, and an upper right fusion portion 134. The lower sheet 14 has an upper fusion portion 141, a lower lower fusion portion 142, a lower left fusion portion 143, and a lower right fusion portion 144. During manufacturing, the upper fusion section 131 of the upper sheet and the upper fusion section 141 of the lower sheet, the lower fusion section 132 of the upper sheet and the lower fusion section 142 of the lower sheet, and the left fusion section 133 of the upper sheet and the left fusion section 143 of the lower sheet are simultaneously or sequentially butt-welded together in the same direction to form an upward fusion edge 111B, a downward fusion edge 112B, and a leftward fusion edge 114B, forming a three-end closed semi-finished airbag cylinder. At this point, only the first end of the airbag cylinder is open. Figure 7 As shown, the docking described in this utility model refers to the inner-to-inner welding of the upper sheet welding portion 131 and the lower sheet welding portion 141. This three-end closed semi-finished airbag cylinder is flipped over, so that the outer surface of the semi-finished airbag cylinder becomes the inner surface, and the inner surface becomes the outer surface. This causes the tail end welding edges 114B (to the left), 111B (upward), and 112B (downward) of the semi-finished airbag cylinder to all flip into the airbag cavity, as shown. Figure 8 , Figure 9 , Figure 10 As shown. Then, the first end of the inverted semi-finished airbag cylinder is welded closed to form a unidirectional welded edge 113 at the first end, thus creating a three-sided concealed airbag, as shown. Figure 4 As shown. In this embodiment, a reinforcing strip radiating from the air inlet is also fixed inside the cylindrical airbag cavity. The reinforcing strip is a slender column fixed to the inner surface of the upper or lower sheet. This is to prevent the upper and lower sheets from sticking together over time, which could lead to poor inflation.
[0032] Reference Figure 11 The image shows a second embodiment of a novel two-piece cylindrical airbag according to this utility model. Unlike the first embodiment, in this embodiment, the upper fusion portion 131 of the upper sheet and the upper fusion portion 141 of the lower sheet are welded together in the same direction to form an upward fusion edge 111B. The lower fusion portion 132 of the upper sheet and the lower fusion portion 142 of the lower sheet are welded together in the same direction to form a downward fusion edge 112B, thus forming an airbag cylinder. At this point, the first and last ends of the semi-finished airbag cylinder are not yet welded closed. The semi-finished airbag cylinder is flipped over, so that the outer surface becomes the inner surface, and the inner surface becomes the outer surface. The flipped airbag cylinder is as shown in the first embodiment. Figure 9As shown. Then, the inverted semi-finished airbag cylinder's first and last ends are welded together to form a first-end unidirectional welded edge 113 and a last-end unidirectional welded edge 114, thus creating a two-sided concealed airbag. In this embodiment, the unidirectional welded edges 111B and 112B are located inside the airbag cavity, while the first-end unidirectional welded edges 113 and 114 are exposed outside the airbag. In this embodiment, a reinforcing strip radiating from the air inlet is also fixed inside the airbag cavity. This reinforcing strip is a slender column fixed to the inner surface of the upper or lower sheet. This prevents the upper and lower sheets from sticking together over time, which could lead to poor inflation.
[0033] Reference Figure 12 , Figure 13 , Figure 14 , Figure 15 The image shows a third embodiment of a novel two-piece cylindrical airbag according to this utility model. Unlike embodiments one and two, this third embodiment uses an upper sheet upper welded portion 131 and a lower sheet upper welded portion 141, as well as an upper sheet lower welded portion 132 and a lower sheet lower welded portion 142, to overlap and weld together to form an upper reverse welded edge 111A and a lower reverse welded edge 112A. Figure 13 As shown, this is a semi-finished airbag cylinder. The overlap between the upper sheet welded portion 131 and the lower sheet welded portion 141 means that the upper sheet welded portion 131 and the lower sheet welded portion 141 are stacked in opposite directions, that is, the inner surface of the upper sheet is fused or bonded to the outer surface of the lower sheet. The joining form of the welded edges is as follows... Figure 14 , Figure 15 As shown. Then... Figure 13 The airbag shown is formed by sealing both ends of the cylindrical airbag. For example, the first end 11 of the cylindrical airbag is sealed by a unidirectional butt weld to form a first-end unidirectional welded edge 113, and the last end 12 of the cylindrical airbag is sealed by a unidirectional butt weld to form a last-end unidirectional welded edge 114. Both the first-end unidirectional welded edge 113 and the last-end unidirectional welded edge 114 are located outside the cavity of the cylindrical airbag. In this embodiment, a reinforcing strip radiating from the air inlet is also fixed inside the cavity of the cylindrical airbag. The reinforcing strip is a slender column fixed to the inner surface of the upper or lower sheet. This is to prevent the upper and lower sheets from sticking together over time, which could lead to poor inflation.
[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.
Claims
1. A novel two-piece cylindrical airbag, comprising a cylindrical airbag having an upper sheet and a lower sheet; the cylindrical airbag having a head end and an end end, the head end of the cylindrical airbag being fused closed, the end end of the cylindrical airbag being fused closed, the head end of the cylindrical airbag having an extension portion, wherein an air inlet and a test nozzle are respectively provided in the extension portion communicating with the cavity of the cylindrical airbag, characterized in that... The width of the upper sheet is smaller than the width of the lower sheet. The upper sheet has an upper fusion joint and a lower fusion joint. The lower sheet has an upper fusion joint and a lower fusion joint. The upper fusion joint of the upper sheet is fused and fixed to the upper fusion joint of the lower sheet. The lower fusion joint of the upper sheet is fused and fixed to the lower fusion joint of the lower sheet.
2. The novel two-piece cylindrical airbag according to claim 1, characterized in that... The upper fusion portion of the upper sheet and the upper fusion portion of the lower sheet are welded together to form the upper fusion edge of the airbag, and the lower fusion portion of the upper sheet and the lower fusion portion of the lower sheet are welded together to form the lower fusion edge of the airbag.
3. A novel two-piece cylindrical airbag according to claim 1, characterized in that... The upper fusion portion of the upper sheet and the upper fusion portion of the lower sheet are overlapped and fused together to form the upper fusion edge of the airbag, and the lower fusion portion of the upper sheet and the lower fusion portion of the lower sheet are overlapped and fused together to form the lower fusion edge of the airbag.
4. A novel two-piece cylindrical airbag according to claim 2, characterized in that... The upper welded edge of the airbag is located inside the cavity of the cylindrical airbag, and the lower welded edge of the airbag is located inside the cavity of the cylindrical airbag.
5. A novel two-piece cylindrical airbag according to claim 3, characterized in that... The tubular airbag end welding closure is formed by butt welding and fixing the upper sheet and the lower sheet together to form the airbag end welding edge.
6. A novel two-piece cylindrical airbag according to claim 4, characterized in that... The tubular airbag end welding closure is formed by butt welding and fixing the upper sheet and the lower sheet together to form an airbag end welding edge, which is located outside the airbag cavity.
7. A novel two-piece cylindrical airbag according to claim 4, characterized in that... The tubular airbag end welding closure is formed by butt welding and fixing the upper sheet and the lower sheet together to form an airbag end welding edge, which is located inside the airbag cavity.
8. A novel two-piece cylindrical airbag according to claim 5, characterized in that... A reinforcing strip radiating from the air inlet is fixed inside the airbag cavity.
9. A novel two-piece cylindrical airbag according to claim 7, characterized in that... A reinforcing strip radiating from the air inlet is fixed inside the airbag cavity.
10. A novel two-piece cylindrical airbag according to claim 9, characterized in that... The reinforcing strip is a slender column that is fixed to the inner surface of the upper or lower sheet.