Double-leaf sliding door anti-pinch sealing strip assembly

Abstract

This utility model relates to the field of sealing devices for vehicle doors, and more particularly to an anti-pinch sealing strip assembly for double-leaf sliding doors. This utility model improves upon existing anti-pinch sealing strip assemblies for double-leaf sliding doors by forming end-filling sealing flashes at the ends of the upper and lower strips, which are integrally connected to the main sealing flashes on the center seam strip. The main sealing flashes and the end-filling sealing flashes together form a continuously extending, fully sealed flash, which seals against the opposite anti-pinch sealing strip, achieving a complete seal from top to bottom at the center seam of the double-leaf sliding door. This avoids sealing gaps and ensures dust and water resistance at the center seam.

Description

Technical Field

[0001] This utility model relates to the field of sealing devices for vehicle doors, and more particularly to a double-leaf sliding door anti-pinch sealing strip assembly. Background Technology

[0002] Rubber strips are common components on bus or rail vehicle doors, primarily serving functions such as sealing, sound insulation, waterproofing, dustproofing, and anti-pinch safety. For double-leaf doors, anti-pinch rubber strips extending vertically are installed on opposite edges of both door panels, providing both sealing and anti-pinch functionality.

[0003] In the prior art, such as the double-leaf sliding door sealing structure disclosed in Chinese invention patent application CN116353315A, sealing strips are installed on both door panels. These sealing strips are rectangular frames, including upper and lower strips at the top and bottom edges of the door panels, side strips on opposite sides of the door panels, and a center seam strip on opposite sides of the door panels. When the double doors are closed, the center seam strips on the two door panels are pressed together, and a sealing lip extending vertically from one side seals against the opposite vertical side of the other, ensuring a seal at the center seam. The upper and lower strips on both door panels are sealed against the sealing frame on the vehicle body profile through their horizontally extending sealing lips.

[0004] However, when the four sides of the sealing strip are vulcanized into a whole, the two ends of the center seam sealing strip are connected to the upper and lower sealing strips during vulcanization. Because the sealing mating surface of the center seam sealing strip extends vertically, while the sealing mating surfaces of the upper and lower sealing strips extend horizontally, the two do not connect well to form a continuous seal. This results in sealing gaps at the top and bottom of the center seam of the double-leaf sliding door, leading to poor dust and water protection. Utility Model Content

[0005] The purpose of this utility model is to provide a double-leaf sliding door anti-pinch sealing strip assembly to solve the problem that existing double-leaf sliding door anti-pinch sealing strip assemblies have sealing gaps at the top and bottom of the middle seam, resulting in poor dustproof and waterproof performance.

[0006] This utility model discloses a double-leaf sliding door anti-pinch sealing strip assembly, comprising anti-pinch sealing strips respectively installed at the edges of the two door panels of the double-leaf door. Each anti-pinch sealing strip includes a center seam strip and upper and lower strips. The upper and lower strips each have sealing lips extending laterally to the center seam and engaging with the door frame. One of the two anti-pinch sealing strips has a main sealing flange on its center seam strip for sealing and engaging with the other center seam strip. The center seam strip with the main sealing flange also has upper and lower strips at both ends. Each of the two anti-pinch sealing strips is provided with two end-filling sealing burrs that are integrally connected to the main sealing burrs, so that the anti-pinch sealing strip forms a fully sealed burr that extends continuously from top to bottom at the center seam position. The other side of the two anti-pinch sealing strips is sealed by providing a fully sealed bonding surface for the fully sealed burrs to seal from the outside to the inside. The fully sealed bonding surface is composed of three parts located on the center seam strip and the upper and lower strips, so that the center seam position of the double-leaf sliding door is completely sealed from top to bottom through the fully sealed burrs and the fully sealed mating surface.

[0007] Furthermore, the sealing flash at both ends and the main sealing flash are smoothly connected.

[0008] Furthermore, the sealing burrs at both ends are connected laterally to the corresponding transverse sealing lips on the upper and lower rubber strips, and achieve a continuous transverse seal with the corresponding transverse sealing lips.

[0009] Furthermore, the portion of the sealing burr that fills the sealing lip at both ends of the horizontal direction coincides with the projection of the horizontal sealing lip.

[0010] Furthermore, on the side facing the center seam, the edges of the filling seal burr and the main seal burr are flush.

[0011] Furthermore, both center seam rubber strips are provided with sensitive element mounting cavities. The cavity wall facing the center seam of the sensitive element mounting cavity is an anti-pinch mating cavity wall. The anti-pinch mating cavity wall extends inward and outward. Both the inner and outer ends of the anti-pinch mating cavity wall of one center seam rubber strip are connected to the rubber strip sidewall that is inclined towards the center seam and folded back to connect to the rubber strip body of the center seam rubber strip, making the center seam rubber strip concave towards the center seam. Both the inner and outer ends of the anti-pinch mating cavity wall of the other center seam rubber strip are connected to the rubber strip sidewall that is inclined towards the opposite side of the center seam and extends to connect to the rubber strip body of the center seam rubber strip, making the center seam rubber strip convex towards the center seam. The two center seam rubber strips are aligned when the double doors are closed through the concave-convex fit.

[0012] Furthermore, a center seam sealing burr is provided on the concave center seam rubber strip facing the center seam side. The center seam sealing burr has two layers, inner and outer, and is respectively set at the end of the side wall of the rubber strip that is inclined and folded back to connect to the main body of the rubber strip facing the center seam side. The outer center seam sealing burr is the main sealing burr. The inclined surface of the side wall of the rubber strip that is inclined and extends to connect to the main body of the rubber strip facing away from the center seam side is fitted and sealed with the main sealing burr, forming part of the fully sealed bonding surface.

[0013] Furthermore, on the upper and lower parts of the center seam strip, which is convex towards the center seam side, there are overlapping burrs that protrude towards the center seam side and extend vertically. The overlapping burrs are located on the outside of the upper and lower strips, and the outer surface of the overlapping burrs constitutes part of the fully sealed bonding surface for bonding and sealing with the corresponding end filling and sealing burrs.

[0014] Furthermore, the upper and lower ends of the convex center seam strip at both ends have mating end faces that are continuously aligned with the main sealing contact surface of the center seam strip and the main sealing flash in the vertical direction. These mating end faces constitute part of the full sealing contact surface for sealing with the corresponding end filling sealing flash.

[0015] Furthermore, the lower part of the lower rubber strip, which is concave towards the center seam, has an inner sealing flash that is integrally continuous with the center seam sealing flash in the vertical direction. The inner sealing flash is used to seal and fit with the corresponding mating end face.

[0016] This invention improves upon existing anti-pinch sealing strip assemblies for double-leaf sliding doors by forming end-filling sealing burrs at the ends of the upper and lower strips, which are integrally connected to the main sealing burrs on the center seam strip. The main sealing burrs and the end-filling sealing burrs together form a continuously extending, fully sealed burrs that seal against the fully sealed mating surface of the opposite anti-pinch sealing strip. This achieves a complete seal from top to bottom on the center seam of the double-leaf sliding door. Combined with the sealing lips on the upper and lower strips, it ensures a better sealing connection, avoids sealing gaps, and guarantees dust and water resistance at the center seam. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the anti-pinch sealing strip assembly for a double-leaf sliding door according to the present invention. Figure 2 This is a schematic diagram showing the sealing and fit of the two center seam rubber strips after they are installed on the door. Figure 3 A schematic diagram showing the mating structure at the top of the seam of the anti-pinch sealing strip; Figure 4This is a schematic diagram of the connection between the center seam rubber strip and the upper rubber strip of the rear anti-pinch sealing strip; Figure 5 This is a structural diagram of the connection between the center seam rubber strip and the upper rubber strip of the rear anti-pinch sealing strip from another perspective; Figure 6 This is a schematic diagram of the connection between the center seam strip and the upper strip of the front anti-pinch sealing strip; Figure 7 A schematic diagram showing the mating structure at the bottom of the center seam of the anti-pinch sealing strip; Figure 8 for Figure 7 The diagram shown is a structural illustration from a bottom-up perspective. Figure 9 This is a schematic diagram of the connection between the center seam strip and the lower strip of the front anti-pinch sealing strip; Figure 10 This is a schematic diagram of the connection between the center seam strip and the lower strip of the rear anti-pinch sealing strip.

[0018] In the diagram: 10. Rear anti-pinch sealing strip; 11. Rear center seam strip; 12. Rear lower strip; 13. Rear upper strip; 121. Overlapping burr; 20. Front anti-pinch sealing strip; 21. Front center seam strip; 22. Front lower strip; 23. Front upper strip; 220. Sealing lip; 221. Filling sealing burr at both ends; 3. Center seam strip body; 31. Mounting ear; 4. Sensitive element mounting cavity; 5. Support rib; 6. Strip sidewall; 61. Main sealing mating surface; 62. Fold-back corner; 64. Main sealing burr; 610. Sealing mating surface at both ends; 640. Inner sealing burr; 8. Door body sealing burr; 90. Door panel; 91. Door profile. Detailed Implementation

[0019] This invention addresses the problem in existing anti-pinch sealing strip assemblies for double-leaf sliding doors where the vulcanized connection between the center seam strip and the upper and lower strips fails to achieve a continuous seal, resulting in sealing gaps and poor dust and water resistance. By adding end-to-end sealing burrs that continuously extend from the main sealing burr on the center seam strip, the anti-pinch sealing strip assembly forms a completely sealed burr at the center seam, ensuring a top-to-bottom seal. Simultaneously, in conjunction with the sealing lips on the upper and lower strips, a seamless seal is achieved, preventing sealing gaps and guaranteeing the dust and water resistance of the anti-pinch sealing strip.

[0020] Specifically, the following description of the car door will be used to introduce the anti-pinch sealing strip assembly of the double-leaf sliding door of this utility model.

[0021] The vehicle door includes a double-leaf door and an anti-pinch sealing strip assembly. In this embodiment, the double-leaf door specifically refers to a double-leaf sliding door, which includes two door panels. The structure and opening / closing mechanism of the double-leaf sliding door are existing technologies and have been applied in existing buses or rail vehicles, and will not be described in detail here.

[0022] Since double-leaf sliding doors are mostly installed on the side panels of both buses and rail vehicles, one door is the front door and the other is the rear door. For ease of explanation, the following description of the doors will use the front and rear, and inside and outside of the vehicle as directional references.

[0023] like Figure 1 As shown, the front anti-pinch sealing strip 20 and the rear anti-pinch sealing strip 10 installed on the two doors of the double-leaf door respectively constitute the anti-pinch sealing strip assembly. Both the front anti-pinch sealing strip 20 and the rear anti-pinch sealing strip 10 are rectangular frames that wrap around the four edges of the door body. The strip extending vertically from the rear edge of the front anti-pinch sealing strip 20 is the front center seam strip 21, and the strip extending vertically from the front edge of the rear anti-pinch sealing strip 10 is the rear center seam strip 11. The front center seam strip 21 and the rear center seam strip 11 are located at the center seam of the double-leaf door to achieve a seal at the center seam.

[0024] Similar to existing technologies, both the front center seam strip 21 and the rear center seam strip 11 have a connecting side that is fixedly connected to the corresponding door profile 91, and a sealing side that is mutually squeezed and cooperated when the double doors are closed, i.e. the side where the center seam is located. For the center seam strip itself, the connecting side and the sealing side are set one in front and one behind.

[0025] Both the front and rear center seam adhesive strips 11 include a center seam adhesive strip body 3. The center seam adhesive strip body 3 is elongated, and its width direction is the inward and outward direction of the car door. A mounting ear 31 is provided on the side of the center seam adhesive strip body 3 facing the connecting side. The mounting ears 31 are arranged in pairs and extend in opposite directions in the inward and outward direction of the car door, forming a mounting gap between the mounting ears 31 and the center seam adhesive strip body 3. For example... Figure 1-2 As shown, the edge of the door profile used for installing the center seam rubber strip has a C-shaped groove. The mounting ear 31 is inserted into the groove, and the two opposing inward-curving edges of the groove are respectively clamped into the mounting gap. Since the center seam rubber strip is made of plastic, it has a certain elastic deformation capacity. Therefore, in order to ensure a more reliable mounting between the center seam rubber strip and the door profile 91, the mounting is designed with these features in mind.

[0026] A sensitive element mounting cavity 4 is provided in the middle of the sealing side of the main body 3 of the center seam rubber strip. The sensitive element mounting cavity 4 is used to insert a sensitive element. After the sensitive element is inserted, if a person or object is trapped between the two doors during the closing process, the sensitive element in the sensitive element mounting cavity 4 will be squeezed, thereby providing a signal to the controller or driver to control the opening of the door to avoid injury. When the two doors are closed and no person or object is trapped, the cavity wall of the sensitive element mounting cavity 4 and the sensitive element inside it will not be squeezed and will not be triggered, and the two doors can close normally.

[0027] To prevent pinching injuries when a person is caught, the center seam adhesive strip needs to deform significantly when it clamps a person, such as an arm. Therefore, the sensitive element mounting cavity 4 is not directly attached to the center seam adhesive strip body 3, but is connected to the body 3 via support ribs 5. The support ribs 5 are arranged in pairs and together with the center seam adhesive strip body 3 form a triangle. The inner cavity of the triangle provides deformation space. The sensitive element mounting cavity 4 is a flat quadrilateral cavity extending inwards and outwards, with opposing cavity walls. The cavity wall on the sealing side is a pinch-resistant mating cavity wall for engaging with the opposing sensitive element mounting cavity 4 of the center seam adhesive strip. The cavity wall near the connecting side, facing the pinch-resistant mating cavity wall, is a pinch-resistant support cavity wall. The support ribs 5 are connected to the pinch-resistant support cavity wall, and the connection points between the two support ribs 5 and the pinch-resistant support cavity wall are located at the midpoint of the pinch-resistant support cavity wall in the inward and outward directions. The thickness of the support rib 5 is greater than the wall thickness of the sensitive element mounting cavity 4, making it less prone to deformation. This ensures that when the door clamps a human body part during closing, the sensitive element mounting cavity 4 deforms first, causing the sensitive element inside to be squeezed and triggered first, thus ensuring the sensitivity of the anti-pinch function.

[0028] The anti-pinch mating cavity wall is the opposite center seam rubber strip. When a human body is clamped between the two center seam rubber strips, the cavity wall facing the connecting side is squeezed. When the two doors are normally closed, the anti-pinch mating cavity walls of the two center seam rubber strips can leave a small gap or just make contact without being compressed.

[0029] by Figure 2 In the case shown, the anti-pinch mating cavity wall of the rear center seam rubber strip 11 on the rear door body is in the front position. The anti-pinch mating cavity wall extends inward and outward, and both the inner and outer ends are connected to the rubber strip side wall 6 that is inclined and extends to the center seam rubber strip body 3, facing away from the sealing side (backward). Figure 2 In the structure shown, the sidewall 6 of the rear center seam adhesive strip 11 includes a backward inclined extension section and a straight section. One end of the backward inclined extension section is connected to the end of the anti-pinch mating cavity wall, and the other end is connected to the straight section, which is then connected to the center seam adhesive strip body 3. The straight section refers to the sidewall surface that extends in the front-back direction and is parallel to the door panel 90. The adhesive strip sidewall 6, the cavity wall of the sensitive element mounting cavity 4, and the support rib 5 together form deformable cavities on the inner and outer sides of the center seam adhesive strip.

[0030] The anti-pinch mating cavity wall of the front center seam rubber strip 21 on the front door body is located at the rear side. The anti-pinch mating cavity wall extends inward and outward, and both its inner and outer ends are connected to the rubber strip side wall 6, which is inclined towards the sealing side (rearward) and folds back to connect to the center seam rubber strip body 3. That is to say, the front end of the rubber strip side wall 6 has a folded corner 62. One side of the folded corner 62 is an inclined section that connects to the end of the anti-pinch mating cavity wall, and the other side is a straight section that extends forward and connects to the center seam rubber strip body 3. The straight section also refers to the side wall surface that extends in the front-back direction and is parallel to the door panel 90.

[0031] As described in the two paragraphs above, the front side of the rear center seam rubber strip 11 is generally convex, including an inner and outer extending planar segment formed by the anti-pinch mating cavity wall in the middle, and inclined extension segments extending away from the front center seam rubber strip 21 at both ends of the planar segment. The rear side of the front center seam rubber strip 21 is generally concave, including an inner and outer extending planar segment formed by the anti-pinch mating cavity wall in the middle, and inclined segments extending towards the rear center seam rubber strip 11 at both ends of the planar segment. Based on this structural shape, when the two doors are closed, the front and rear anti-pinch rubber strips can fit together concave and convex on the sealing side, thereby ensuring a proper fit without being squeezed, misaligned, or deformed in the inner and outer directions.

[0032] The corner of the fold-back bend 62 of the front center seam rubber strip 21 is provided with a forward-extending center seam sealing burr, that is, both the inner and outer sides of the front center seam rubber strip 21 are provided with center seam sealing burrs. After the two doors are closed, the center seam sealing burrs elastically adhere to the outer surface of the backward inclined extension section of the rubber strip sidewall 6 of the rear center seam rubber strip 11, thereby achieving a seal between the two front and rear anti-pinch rubber strips. Among them, the outer surface of the backward inclined extension section of the rubber strip sidewall 6 of the rear center seam rubber strip 11 is the main sealing bonding surface 61, and the center seam sealing burr of the front center seam rubber strip 21 is the main sealing burr 64.

[0033] In addition, on the sidewalls 6 of the front and rear anti-pinch rubber strips, a door sealing burr 8 is provided at one end on the connecting side. The door sealing burr 8 extends inward at an angle or in an arc shape. After the anti-pinch rubber strip is installed on the door profile 91, the door sealing burr 8 can fit tightly against the outer side of the door panel 90 to ensure a seal. The inner side of the root of the door sealing burr 8 has a deformation groove.

[0034] The above provides a detailed description of the structure and fitting method of paired seam tapes, mainly relying on... Figure 2 The structure shown is, of course, in other embodiments, when the front anti-pinch sealing strip 20 and the rear anti-pinch sealing strip 10 are interchanged, the front center seam strip 21 and the rear center seam strip 11 are naturally interchanged.

[0035] The specific structure after the center seam rubber strip and the upper rubber strip are vulcanized and connected is as follows: like Figure 3-6 As shown, whether it is the front anti-pinch sealing strip 20 or the rear anti-pinch sealing strip 10, the upper strip includes a horizontally extending upper strip body and an integrally formed sealing lip 220 on the upper strip body. The sealing lip 220 extends horizontally along the upper strip body and extends outward in an arc shape from the upper edge of the upper strip body. Its outer edge faces inward and is attached to the frame edge of the corresponding door frame during use, thereby achieving a tight seal with the door frame.

[0036] The front anti-pinch sealing strip 20 and the rear anti-pinch sealing strip 10 have different end structures at the center seam. For ease of description below, the upper part of the rear anti-pinch sealing strip 10 will be referred to as the rear upper strip 13, and the upper part of the front anti-pinch sealing strip 20 will be referred to as the front upper strip 23. Figure 4-5 The diagram shows the structure formed after the rear center seam rubber strip 11 and the rear upper rubber strip 13 are vulcanized together. It can be seen that the front end face of the upper rubber strip body of the rear upper rubber strip 13 has the same outline shape as the front side of the rear center seam rubber strip 11, thus forming a continuous mating end face with the main sealing contact surface 61 on the rear center seam rubber strip 11. Furthermore, the front end of the sealing lip 220 of the rear upper rubber strip 13 has an integrally formed overlapping flange 121 extending vertically. This overlapping flange 121 is located on the inner side of the sealing lip 220 in the inward and outward directions, and protrudes forward beyond the sealing lip 220 of the rear upper rubber strip 13 in the forward and backward directions. Therefore, it can be seen from the figure that there is a step in the inward and outward directions between the outer side of the overlapping flange 121 and the outer side of the sealing lip 220.

[0037] like Figure 6 As shown, this is the structure formed after the front center seam rubber strip 21 and the front upper rubber strip 23 are vulcanized together. It can be seen that the rear end face of the upper rubber strip body of the front upper rubber strip 23 has the same contour shape as the rear side face of the front center seam rubber strip 21, thus allowing it to mate with the front end face of the upper rubber strip body of the rear upper rubber strip 13. Furthermore, the rear end of the sealing lip 220 of the front upper rubber strip 23 is integrally formed with vertically extending end-filling sealing flash 221. These end-filling sealing flash 221 coincide with the projection of the sealing lip 220 in the front-rear direction, meaning they can be understood as a rearward continuation of the sealing lip 220. In addition, these end-filling sealing flash 221 are integrally connected to the main sealing flash 64 on the front center seam rubber strip 21 in the vertical direction, forming a continuous sealing structure.

[0038] In the closed state, the front anti-pinch sealing strip 20 and the rear anti-pinch sealing strip 10 cooperate with each other. The two end filling sealing flashes 221 on the front anti-pinch sealing strip 20 extend rearward into the step formed by the overlapping flashes 121 and the sealing lip 220 of the rear anti-pinch sealing strip 10, that is, they overlap with the overlapping flashes 121 of the rear anti-pinch sealing strip 10. At this time, the two end filling sealing flashes 221 seal from the outside to the inside simultaneously adhere to the mating end face and the overlapping flashes 121 of the rear anti-pinch sealing strip 10. The part of the mating end face that corresponds to the main sealing contact surface 61 in the vertical direction is the two end sealing contact surface 610. The two end sealing contact surface 610 and the outer surface of the overlapping flashes 121 are part of the entire fully sealed contact surface, which cooperates with the two end filling sealing flashes 221 to achieve a seal. This achieves the seal between the front anti-pinch sealing strip 20 and the main sealing flashes 64 to the two end filling sealing flashes 221 and the rear anti-pinch sealing strip 10. Furthermore, the outer surfaces of the sealing burrs 221 at both ends are flush with the outer surfaces of the upper front rubber strip 23 and the upper rear rubber strip 13.

[0039] The specific structure after the center seam rubber strip and the lower rubber strip are vulcanized and connected is as follows: like Figure 7-10 As shown, whether it is the front anti-pinch sealing strip 20 or the rear anti-pinch sealing strip 10, the lower strip includes a horizontally extending lower strip body and an integrally formed sealing lip 220 on the lower strip body. The sealing lip 220 extends horizontally along the lower strip body and extends outward in an arc shape from the lower edge of the lower strip body. Its outer edge faces inward and is attached to the frame edge of the corresponding door frame during use, thereby achieving a tight seal with the door frame.

[0040] The front anti-pinch sealing strip 20 and the rear anti-pinch sealing strip 10 have different end structures at the center seam position. For ease of description below, the lower strip of the rear anti-pinch sealing strip 10 will be referred to as the rear lower strip 12, and the lower strip of the front anti-pinch sealing strip 20 will be referred to as the front lower strip 22.

[0041] like Figure 9 As shown, this is the structure formed after the front center seam rubber strip 21 and the front lower rubber strip 22 are vulcanized together. It can be seen that the rear end face of the lower rubber strip body of the front lower rubber strip 22 has the same contour shape as the rear side face of the front center seam rubber strip 21, thus allowing it to mate with the front end face of the lower rubber strip body of the rear lower rubber strip 12. Furthermore, the rear end of the sealing lip 220 of the front lower rubber strip 22 has integrally formed vertically extending end-filling sealing flash 221. These end-filling sealing flash 221 coincide with the projection of the sealing lip 220 in the front-rear direction, meaning they can be understood as a rearward continuation of the sealing lip 220. In addition, these end-filling sealing flash 221 are integrally connected to the main sealing flash 64 on the front center seam rubber strip 21 in the vertical direction, forming a vertically connected sealing structure.

[0042] like Figure 10 The diagram shows the structure formed after the rear center seam rubber strip 11 and the rear upper rubber strip 13 are vulcanized together. It can be seen that the front end face of the lower rubber strip body of the rear lower rubber strip 12 has the same outline shape as the front side of the rear center seam rubber strip 11, thus forming a continuous mating end face with the main sealing contact surface 61 on the rear center seam rubber strip 11. Furthermore, the front end of the sealing lip 220 of the rear lower rubber strip 12 has an integrally formed overlapping flange 121 extending vertically. This overlapping flange 121 is located on the inner side of the sealing lip 220 in the inward and outward directions, and protrudes forward beyond the sealing lip 220 of the rear lower rubber strip 12 in the forward and backward directions. Therefore, it can be seen from the figure that a step is formed in the inward and outward directions between the outer side of the overlapping flange 121 and the outer side of the sealing lip 220.

[0043] When the door is closed, such as Figure 7-8 As shown, the front anti-pinch sealing strip 20 and the rear anti-pinch sealing strip 10 cooperate with each other. The two end filling sealing flashes 221 on the front anti-pinch sealing strip 20 extend rearward into the step formed by the overlapping flashes 121 and the sealing lip 220 of the rear anti-pinch sealing strip 10, that is, they overlap with the overlapping flashes 121 of the rear anti-pinch sealing strip 10. At this time, the two end filling sealing flashes 221 simultaneously adhere to the mating end face and the overlapping flashes 121 of the rear anti-pinch sealing strip 10 from the outside to the inside. The part on the mating end face that corresponds to the main sealing contact surface 61 in the vertical direction is the two end sealing contact surface 610. The two end sealing contact surface 610 and the outer surface of the overlapping flashes 121, as part of the entire fully sealed contact surface, adhere to the two end filling sealing flashes 221 to achieve a seal. This achieves the seal between the rear main sealing flash 64 of the front anti-pinch sealing strip 20 and the two end filling sealing flashes 221 and the rear anti-pinch sealing strip 10. Furthermore, the outer surfaces of the sealing burrs 221 at both ends are flush with the outer surfaces of the lower front rubber strip 22 and the lower rear rubber strip 12.

[0044] To avoid incomplete sealing at the connection between the main sealing flash 64 and the end filler sealing flash 221, in a preferred embodiment, the end filler sealing flash 221 and the main sealing flash 64 are smoothly connected. This ensures consistent sealing between the end filler sealing flash 221 and the main sealing flash 64 and the main sealing mating surface 61, guaranteeing a better sealing effect. In another preferred embodiment, the edges of the end filler sealing flash 221 and the main sealing flash 64 are flush on the side facing the center seam. This ensures that the overlap length of the end filler sealing flash 221 and the main sealing flash 64 remains consistent when they mate with the main sealing mating surface 61, guaranteeing a better sealing effect.

[0045] As can be seen from the above description of the structure after the center seam rubber strip is vulcanized and connected with the upper and lower rubber strips, the sealing flash 221 at both ends of the front upper rubber strip 23, the main sealing flash 64 on the front center seam rubber strip 21, and the sealing flash 221 at both ends of the front lower rubber strip 22 extend continuously from top to bottom to form a fully sealed flash; the sealing mating surfaces 610 at both ends of the rear upper rubber strip 13, the main sealing mating surface 61 on the rear center seam rubber strip 11, and the sealing mating surfaces 610 at both ends of the rear lower rubber strip 12 extend continuously from top to bottom to form a fully sealed mating surface. A complete seal from top to bottom is formed at the center seam of the front anti-pinch sealing rubber strip 20 and the rear anti-pinch sealing rubber strip 10.

[0046] Furthermore, in a preferred embodiment, such as Figure 7-8 As shown, the rear end of the lower front rubber strip 22 is provided with an inner sealing burr 640 on the inner side. The inner sealing burr 640 protrudes rearward and is connected to the rear end face of the lower rubber strip body. It is integrally connected with the inner center seam sealing burr of the front center seam rubber strip 21 in the vertical direction. When the double-leaf sliding door is closed, the inner sealing burr 640 is used to seal and fit with the mating end face of the lower rear rubber strip 12, realizing a double-layer seal at this position. Of course, in some embodiments, the inner sealing burr 640 can be omitted.

[0047] As can be seen from the above description of the structure and fitting method of the front anti-pinch sealing strip 20 and the rear anti-pinch sealing strip 10, the double-leaf sliding door anti-pinch sealing strip assembly of this utility model achieves complete sealing at the center seam through the fully sealed burr and fully sealed bonding surface that extend continuously from top to bottom in one piece at the center seam. The sealing lips 220 of the front upper strip 23 and the front lower strip 22 are connected to the fully sealed burr, and the sealing lips 220 of the rear upper strip 13 and the rear lower strip 12 are connected to the sealing bonding surface, thereby achieving continuous sealing in both the vertical and horizontal directions, avoiding the existence of sealing gaps, and achieving a better waterproof and dustproof effect.

[0048] In other embodiments based on the inventive concept of this utility model, the portions of the sealing flash at both ends corresponding to the transverse sealing lip are staggered with the transverse sealing lip in the inward and outward directions; or, in other embodiments, on the side facing the center seam, the edges of the sealing flash at both ends extend beyond the edge of the main sealing flash, or the edges of the sealing flash at both ends are shorter than the edge of the main sealing flash, as long as they can ensure good fit and sealing with the end sealing surface; or, in other embodiments, the center seam sealing flash on the front center seam rubber strip may only have one on the outer side, while the center seam sealing flash on the inner side is omitted.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A double-leaf sliding door anti-pinch sealing strip assembly, comprising anti-pinch sealing strips respectively installed at the edges of the two door panels of the double-leaf door, the anti-pinch sealing strips including a center seam strip and upper and lower strips, the upper and lower strips respectively having sealing lips extending laterally to the center seam position and cooperating with the door frame, characterized in that, One of the two anti-pinch sealing strips has a main sealing burr on its center seam strip for sealing and mating with the other center seam strip. The upper and lower ends of the center seam strip with the main sealing burr also have end-filling sealing burrs that are integrally connected with the main sealing burr, so that the anti-pinch sealing strip forms a fully sealed burr that extends continuously from top to bottom at the center seam position. The other of the two anti-pinch sealing strips is sealed by a fully sealed mating surface for the fully sealed burr to seal and fit from the outside to the inside. The fully sealed mating surface is composed of three parts on the center seam strip and the upper and lower strips. Thus, the fully sealed burr and the fully sealed mating surface completely seal the center seam position of the double-leaf sliding door from top to bottom.

2. The anti-pinch sealing strip assembly for a double-leaf sliding door according to claim 1, characterized in that, The sealing flash at both ends and the main sealing flash are smoothly connected.

3. The anti-pinch sealing strip assembly for a double-leaf sliding door according to claim 1, characterized in that, The sealing burrs at both ends are connected laterally to the corresponding transverse sealing lips on the upper and lower rubber strips, and achieve a continuous transverse seal with the corresponding transverse sealing lips.

4. The anti-pinch sealing strip assembly for a double-leaf sliding door according to claim 3, characterized in that, The portion of the sealing burr at both ends of the horizontal direction that corresponds to the horizontal sealing lip coincides with the projection of the horizontal sealing lip.

5. The anti-pinch sealing strip assembly for a double-leaf sliding door according to claim 1, characterized in that, On the side facing the center seam, the edges of the sealing burr and the main sealing burr are flush.

6. The double-leaf sliding door anti-pinch sealing strip assembly according to any one of claims 1-5, characterized in that, Both center seam rubber strips are provided with sensitive element mounting cavities. The cavity wall facing the center seam of the sensitive element mounting cavity is an anti-pinch mating cavity wall. The anti-pinch mating cavity wall extends inward and outward. Both the inner and outer ends of the anti-pinch mating cavity wall of one center seam rubber strip are connected to the rubber strip side wall that is inclined towards the center seam and folded back to connect to the rubber strip body of the center seam rubber strip, making the center seam rubber strip concave towards the center seam. Both the inner and outer ends of the anti-pinch mating cavity wall of the other center seam rubber strip are connected to the rubber strip side wall that is inclined towards the opposite side of the center seam and extends to connect to the rubber strip body of the center seam rubber strip, making the center seam rubber strip convex towards the center seam. The two center seam rubber strips are aligned when the double doors are closed by the concave-convex mating.

7. The anti-pinch sealing strip assembly for a double-leaf sliding door according to claim 6, characterized in that, facing... A center seam sealing burr is provided on the concave center seam rubber strip. The center seam sealing burr has two layers, inner and outer, and is respectively set at the end of the side wall of the rubber strip that is inclined towards the center seam and folded back to connect with the main body of the rubber strip. The center seam sealing burr on the outer side is the main sealing burr. The inclined surface of the side wall of the rubber strip that is inclined away from the center seam and extends to connect with the main body of the rubber strip is fitted and sealed with the main sealing burr, forming part of the fully sealed bonding surface.

8. The anti-pinch sealing strip assembly for a double-leaf sliding door according to claim 7, characterized in that, facing... On the upper and lower parts of the center seam strip, which is convex on one side of the center seam, there are overlapping burrs that protrude towards the center seam and extend vertically. The overlapping burrs are located on the outside of the upper and lower parts of the strip, and the outer side of the overlapping burrs constitutes part of the fully sealed bonding surface for bonding and sealing with the corresponding end filling and sealing burrs.

9. The anti-pinch sealing strip assembly for a double-leaf sliding door according to claim 8, characterized in that, facing... The upper and lower ends of the center seam rubber strip, which is convex on one side of the center seam, have mating end faces that are continuous and consistent with the main sealing contact surface of the center seam rubber strip and the main sealing flash in the vertical direction. These mating end faces constitute part of the full sealing contact surface for sealing with the corresponding end filling sealing flash.

10. The anti-pinch sealing strip assembly for a double-leaf sliding door according to claim 9, characterized in that, facing... The lower part of the lower part of the center seam rubber strip, which is concave on one side of the center seam, is provided with an inner sealing flash that is integral and continuous with the center seam sealing flash in the vertical direction. The inner sealing flash is used to seal and fit with the corresponding mating end face.

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