Anti-trapping tape assembly

Abstract

This utility model relates to the field of sealing devices for vehicle doors, and more particularly to anti-pinch rubber strip assemblies. This utility model improves upon existing anti-pinch rubber strip assemblies by optimizing their structure. The overall fit between the sealing sides of the paired anti-pinch rubber strips is improved by connecting the two ends of one anti-pinch mating cavity wall to the rubber strip sidewall that is inclined towards the sealing side and folded back to connect to the rubber strip body, making the sealing side of this anti-pinch rubber strip concave. Conversely, the two ends of the other anti-pinch mating cavity wall are connected to the rubber strip sidewall that is inclined away from the sealing side and extends to connect to the rubber strip body, making the sealing side of this anti-pinch rubber strip convex. Thus, when a double-leaf door is closed, the paired anti-pinch rubber strips are aligned through the concave-convex fit on their sealing sides, thereby ensuring a proper seal.

Description

Technical Field

[0001] This utility model relates to the field of sealing devices for vehicle doors, and more particularly to anti-pinch rubber strip assemblies. 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 anti-pinch rubber strip disclosed in Chinese Utility Model Patent No. CN219281620U, one side of the rubber strip body is a connecting side for connecting with the door frame profile, and the other side is a sealing side for sealing with the opposite anti-pinch rubber strip. A sensitive element mounting cavity is provided in the middle of the rubber strip body. Two opposing inclined support ribs are connected to the side of the sensitive element mounting cavity facing the sealing side. The ends of the two support ribs are connected to the rubber strip body through edge sidewalls extending towards the connecting side. The ends of the support ribs also have two opposing inclined sealing flashes. When the double-leaf door is closed, the sealing flashes of the two opposing anti-pinch rubber strips press against each other and achieve a sealing fit.

[0004] When this type of anti-pinch strip is used, the two strips on the left and right are symmetrically arranged about the center seam of the double door. However, due to assembly errors of the door body, assembly errors of the anti-pinch strip, and vibration and impact during use, the two anti-pinch strips may not be properly aligned or can not maintain a proper alignment after the double door is closed. In some cases, one strip may be tilted outward and the other inward, thus failing to guarantee a good seal. Utility Model Content

[0005] The purpose of this invention is to provide an anti-pinch rubber strip assembly to solve the problem that existing anti-pinch rubber strips cannot guarantee a good seal because they are not properly aligned.

[0006] The anti-pinch rubber strip assembly of this utility model includes a pair of anti-pinch rubber strips respectively installed at opposite edges of a double-leaf door. Each anti-pinch rubber strip has a sensitive element mounting cavity at the middle position of its sealing side. The cavity wall facing the sealing side of the sensitive element mounting cavity is an anti-pinch mating cavity wall, which extends inward and outward. Both the inner and outer ends of the anti-pinch mating cavity wall of one anti-pinch rubber strip are connected to rubber strip sidewalls that are inclined towards the sealing side and folded back to connect to the rubber strip body, making the sealing side of this anti-pinch rubber strip concave. Both the inner and outer ends of the anti-pinch mating cavity wall of the other anti-pinch rubber strip are connected to rubber strip sidewalls that are inclined away from the sealing side and extend to connect to the rubber strip body, making the sealing side of this anti-pinch rubber strip convex. The pair of anti-pinch rubber strips are aligned when the double-leaf door is closed by the concave-convex mating of their sealing sides.

[0007] Furthermore, on the side wall of the rubber strip that is inclined towards the sealing side and folded back to connect the main body of the rubber strip, there are sealing burrs on the inner and outer sides facing the sealing side, which cooperate with the side wall of another anti-pinch rubber strip.

[0008] Furthermore, the fold-back corner of the sidewall of the adhesive strip that is inclined toward the sealing side and folds back to connect the adhesive strip body is a thickened corner to provide root support for the sealing flash.

[0009] Furthermore, the thickened corner has a weight-reducing and reinforcing hole in the middle.

[0010] Furthermore, the end of the thickened corner connected to the main body of the rubber strip has a thinned and deformed section.

[0011] Furthermore, on the side wall of the adhesive strip that is inclined away from the sealing side and extends to connect to the adhesive strip body, there is a thinning deformation section at the end of the inclined section connected to the adhesive strip body.

[0012] Furthermore, the sensitive element mounting cavity is a flat quadrilateral cavity extending inward and outward, and has an anti-pinch support cavity wall that is opposite to the anti-pinch mating cavity wall. A support rib that supports the anti-pinch support cavity wall is connected between the rubber strip body and the anti-pinch support cavity wall.

[0013] Furthermore, the support ribs are arranged in pairs inside and outside, forming a triangle with the rubber strip body to support the anti-pinch cavity wall at the apex, and the included angle between the two support ribs is between 100° and 108°.

[0014] Furthermore, a thinning and deformation section is provided at the corner connection between the anti-pinch support cavity wall and the cavity walls at both ends.

[0015] Furthermore, the ends of the support ribs are connected to both ends of the rubber strip body.

[0016] This invention improves upon existing anti-pinch rubber strip assemblies by modifying the sealing side fit structure of the paired anti-pinch rubber strips. One anti-pinch mating cavity wall is connected at both ends to the rubber strip sidewall that is inclined towards the sealing side and folded back to connect to the rubber strip body, making the sealing side of this anti-pinch rubber strip concave. The other anti-pinch mating cavity wall is connected at both ends to the rubber strip sidewall that is inclined away from the sealing side and extends to connect to the rubber strip body, making the sealing side of this anti-pinch rubber strip convex. Thus, when the double-leaf door is closed, the paired anti-pinch rubber strips are aligned through the concave-convex fit on their sealing sides, thereby ensuring a proper seal. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the anti-pinch rubber strip assembly of this utility model; Figure 2 This is a schematic diagram showing the sealing fit of the two center seam rubber strips in the anti-pinch rubber strip assembly after they are installed on the door.

[0018] In the diagram: 10. Front door rubber strip; 11. Front anti-pinch rubber strip; 20. Rear door rubber strip; 21. Rear anti-pinch rubber strip; 3. Rubber strip body; 30. Mounting surface; 31. Mounting ear; 4. Sensitive element mounting cavity; 5. Support rib; 6. Rubber strip sidewall; 61. Backward tilting extension section; 62. Fold-back corner; 63. Weight reduction and reinforcement hole; 64. Rubber strip sealing flash; 7. Thinning deformation section; 8. Door sealing flash; 90. Door panel; 91. Door profile. Detailed Implementation

[0019] This invention addresses the problem that existing anti-pinch rubber strip assemblies installed on car doors cannot guarantee proper alignment and thus have poor sealing performance when the doors are closed. By improving the structure of the center seam rubber strip in the anti-pinch rubber strip assembly, the sealing sides of the two paired center seam rubber strips can be aligned properly when the double doors are closed through a concave-convex fit, thereby ensuring a good sealing effect.

[0020] Specifically, the present invention will be described below through different embodiments of the anti-pinch rubber strip assembly.

[0021] The anti-pinch rubber strip assembly of this utility model is applied to a vehicle door, which includes a double-leaf door and the anti-pinch rubber strip assembly. In this embodiment, the double-leaf door specifically refers to a double-leaf sliding door, which includes two door bodies. 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 1-2 As shown, the front door rubber strip 10 and the rear door rubber strip 20 installed on the two doors of the double door respectively constitute an anti-pinch rubber strip assembly. Both the front door rubber strip 10 and the rear door rubber strip 20 are frame-shaped and are installed around the four edges of the door body. The rubber strip extending vertically from the rear edge of the front door rubber strip 10 is the front anti-pinch rubber strip 11, and the rubber strip extending vertically from the front edge of the rear door rubber strip 20 is the rear anti-pinch rubber strip 21. The front anti-pinch rubber strip 11 and the rear anti-pinch rubber strip 21 are located at the center seam of the double door to achieve a seal at the center seam. Therefore, the front anti-pinch rubber strip 11 and the rear anti-pinch rubber strip 21 are also referred to as the center seam rubber strip.

[0024] Similar to existing technologies, both the front anti-pinch strip 11 and the rear anti-pinch strip 21 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. For the anti-pinch strip itself, the connecting side and the sealing side are set one in front and one behind.

[0025] Both the front and rear anti-pinch rubber strips 21 include a strip body 3. The strip body 3 is elongated, and its width direction corresponds to the inward and outward direction of the door. A mounting ear 31 is provided on the side of the 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 door, forming a mounting gap between the mounting ear 31 and the strip body 3. For example... Figure 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 and has a certain elastic deformation capacity, in order to ensure a more reliable mounting between the center seam rubber strip and the door profile 91, in one embodiment, the side of the connecting side of the rubber strip body 3 is inclined at the mounting surface 30 corresponding to the mounting ear 31, making the mounting gap a narrowed gap. Of course, in other embodiments, the mounting gap is a gap of equal width with a constant size, and the side of the connecting side of the rubber strip body 3 is a plane extending inward and outward.

[0026] A sensitive element mounting cavity 4 is provided in the middle of the sealing side of the rubber strip body 3. The sensitive element mounting cavity 4 is used to insert a sensitive element. After the sensitive element is inserted, when the two doors are closing, if a person or object is caught between them, 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 caught, 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 adhesive strip body 3, but is connected to the adhesive strip body 3 via support ribs 5. The support ribs 5 are arranged in pairs and together with the 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 cooperating with the opposing center seam adhesive strip's sensitive element mounting cavity 4. The cavity wall near the connecting side, opposite to the pinch-resistant mating cavity wall, is the pinch-resistant support cavity wall. The support ribs 5 are connected to the pinch-resistant support cavity wall, and the connection point between the two support ribs 5 and the pinch-resistant support cavity wall is 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 a person is trapped by the closing door, the sensitive element mounting cavity 4 deforms first, triggering the sensitive element within it and guaranteeing the sensitivity of the anti-pinch function. In this embodiment, the paired support ribs 5 provide both support for the anti-pinch support cavity wall and anti-pinch deformation capability. The included angle between the two support ribs 5 is between 100° and 108°. However, in other embodiments, this angle range can be exceeded, for example, to 120° or 90°. In this embodiment, the ends of the two support ribs are connected to both ends of the adhesive strip body. In other embodiments, the ends of the two support ribs can be connected to positions near both ends of the adhesive strip body.

[0028] Of course, based on the role of the support rib 5 described above, in other embodiments, the support rib 5 can also extend obliquely from the middle of the rubber strip body 3, that is, the end of the support rib 5 away from the rubber strip body 3 is connected to the two ends of the anti-pinch support cavity wall; or the support rib 5 extends back and forth, and two or more support ribs 5 are parallel and spaced apart in the inward and outward directions, and the front and rear ends of the support rib 5 are respectively connected to the anti-pinch support cavity wall and the rubber strip body 3.

[0029] 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.

[0030] by Figure 2 In the case shown, the anti-pinch mating cavity wall of the front anti-pinch rubber strip 11 on the front door body is located at the rear side. 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 rubber strip body 3, facing away from the sealing side (forward). Figure 2In the structure shown, the sidewall 6 of the front anti-pinch strip 11 includes a backward-inclined extension section 61 and a straight section. One end of the backward-inclined extension section 61 is connected to the end of the anti-pinch mating cavity wall, and the other end is connected to the straight section, which in turn connects to the 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 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 strip. Of course, in other embodiments, the strip sidewall 6 can be an integral inclined section, with one end connected to the end of the door mating cavity wall and the other end connected to the end of the strip body 3.

[0031] The anti-pinch mating cavity wall of the rear anti-pinch rubber strip 21 on the rear door body is located at the front. 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, which is inclined towards the sealing side (forward) and folds back to connect to the rubber strip body 3. That is to say, the front end of the rubber strip side wall 6 has a fold-back corner 62. One side of the fold-back 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 backward and connects to the 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.

[0032] As described in the two paragraphs above, the rear side of the front anti-pinch strip 11 is generally convex, including an inner and outer extending planar section formed by the anti-pinch mating cavity wall in the middle, and inclined extension sections 61 at both ends of the planar section that extend obliquely towards the rear anti-pinch strip 21. The front side of the rear anti-pinch strip 21 is generally concave, including an inner and outer extending planar section formed by the anti-pinch mating cavity wall in the middle, and inclined sections at both ends of the planar section that extend obliquely towards the front anti-pinch strip 11. Based on this structural shape, when the two doors are closed, the front and rear anti-pinch strips can fit together convexly and concavely on the sealing side, thereby ensuring a proper fit without being squeezed, misaligned, or deformed in the inner and outer directions.

[0033] The corner of the fold-back bend 62 of the rear anti-pinch rubber strip 21 is provided with a forward-extending rubber strip sealing burr 64, that is, both the inner and outer sides of the rear anti-pinch rubber strip 21 are provided with rubber strip sealing burrs 64. After the two doors are closed, the rubber strip sealing burrs 64 elastically adhere to the backward inclined extension section 61 of the rubber strip side wall 6 of the front anti-pinch rubber strip 11, thereby achieving a seal between the two front and rear anti-pinch rubber strips.

[0034] To ensure the sealing effect of the sealing flash 64 and the tightness of the fit between the sealing flash 64 and the front anti-pinch strip 11, the fold-back corner 62 needs to provide root support for the sealing flash 64. Therefore, when the sealing flash 64 and the front anti-pinch strip 11 are pressed together, it is preferable that the sealing flash 64 deforms, thereby reducing the deformation at the fold-back corner 62. That is, in a preferred embodiment, the fold-back corner 62 is a thickened corner, meaning that the wall thickness of the entire fold-back corner 62 is larger than the cavity wall of the sensitive element mounting cavity 4.

[0035] Furthermore, since the center seam tape is an extruded part, to ensure molding quality and prevent excessive material and weight at the fold-back corner 62 from deforming due to gravity before curing after extrusion, this embodiment includes a weight-reducing reinforcing hole 63 in the thickened corner. Based on mechanical principles, the weight-reducing reinforcing hole 63 also improves the deformation resistance of the fold-back corner 62. Of course, this invention does not exclude embodiments without the weight-reducing reinforcing hole 63, where extrusion molding quality is ensured by controlling the extrusion speed or the cooling and curing speed after extrusion.

[0036] In order to improve the deformation capacity at specific anti-pinch locations to suppress the deformation capacity of other parts and ensure the deformation pattern when the anti-pinch rubber strip is deformed under pressure, a preferred but not necessary design is to have a thinning deformation part 7 at the end of the thickened corner of the rear anti-pinch rubber strip 21 that is connected to the rubber strip body 3, a thinning deformation part 7 at the position where the backward inclined extension section 61 of the front anti-pinch rubber strip 11 is connected to the straight section, and a thinning deformation part 7 at the corner connection between the two ends of the anti-pinch support cavity wall and the cavity wall connected to it.

[0037] 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.

[0038] The above provides a detailed description of the structure and fitting method of paired seam tapes, mainly relying on... Figure 2 The structure shown can be modified in other embodiments, where the positions of the front and rear anti-pinch rubber strips 21 can be interchanged. Figure 2 When the front anti-pinch strip 11 is installed on the rear door body, it is called the rear anti-pinch strip 21. When the rear anti-pinch strip 21 is installed on the front door body, it is called the front anti-pinch strip 11.

[0039] In the above embodiments, the sensitive element mounting cavity 4 is a flat quadrilateral cavity. In other embodiments, the sensitive element mounting cavity 4 can be a monolithic, spindle-shaped, or portable hexagonal cavity. These approximate shapes are all deformable embodiments.

[0040] 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 pinch-resistant weatherstrip assembly comprising a pair of pinch-resistant weatherstrips for disposition at opposite door edge portions of a double door, respectively, characterized in that, Both anti-pinch rubber strips have a sensitive element mounting cavity at the middle position of the sealing side. The cavity wall facing the sealing side of the sensitive element mounting cavity is the anti-pinch mating cavity wall, which extends inward and outward. Both the inner and outer ends of the anti-pinch mating cavity wall of one anti-pinch rubber strip are connected to a rubber strip side wall that is inclined towards the sealing side and folded back to connect to the rubber strip body, making the sealing side of the anti-pinch rubber strip concave. Both the inner and outer ends of the anti-pinch mating cavity wall of the other anti-pinch rubber strip are connected to a rubber strip side wall that is inclined away from the sealing side and extends to connect to the rubber strip body, making the sealing side of the anti-pinch rubber strip convex. The two anti-pinch rubber strips are aligned when the double door is closed by the concave and convex mating of the sealing sides.

2. The pinch-resistant tape assembly of claim 1, wherein, On the side wall of the rubber strip that is inclined toward the sealing side and folded back to connect to the main body of the rubber strip, there are sealing burrs on the inner and outer sides facing the sealing side, which cooperate with the side wall of another anti-pinch rubber strip.

3. The pinch-resistant tape assembly of claim 2, wherein, The fold-back corner of the side wall of the adhesive strip that is inclined toward the sealing side and folds back to connect the adhesive strip body is a thickened corner to provide root support for the sealing flash.

4. The pinch-resistant tape assembly of claim 3, wherein, The thickened corner has a weight-reducing and reinforcing hole in the middle.

5. The pinch-resistant tape assembly of claim 3, wherein, The end of the thickened corner connected to the main body of the rubber strip has a thinning and deformation section.

6. The pinch-resistant tape assembly of claim 1, wherein, On the side wall of the adhesive strip that is inclined away from the sealing side and extends to connect to the main body of the adhesive strip, there is a thinning and deformation section at the end of the inclined section that is connected to the main body of the adhesive strip.

7. The pinch-resistant tape assembly of any of claims 1-6, wherein, The sensitive element mounting cavity is a flat quadrilateral cavity extending inward and outward, and has anti-pinch support cavity walls that are opposite to the anti-pinch mating cavity walls. The rubber strip body and the anti-pinch support cavity walls are connected by support ribs that support the anti-pinch support cavity walls.

8. The pinch-resistant tape assembly of claim 7, wherein, The supporting ribs are arranged in pairs inside and outside, forming a triangle with the rubber strip body to support the anti-pinch cavity wall at the apex. The included angle between the two supporting ribs is between 100° and 108°.

9. The pinch-resistant tape assembly of claim 7, wherein, The anti-pinch support cavity wall is provided with a thinning and deformation section at the corner connection between it and the cavity walls at both ends.

10. The pinch-resistant tape assembly of claim 7, wherein, The ends of the support ribs are connected to both ends of the rubber strip body.

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