Cloth clamping composite membrane

Abstract

The utility model discloses a cloth clamping composite membrane which comprises a membrane body and a reinforced fabric layer arranged in the membrane body, the reinforced fabric layer is provided with a tensioning fixing frame in a matched mode, and the tensioning fixing frame comprises a first fixing piece and a second fixing piece connected with the first fixing piece in a buckled mode. The first fixing piece and the second fixing piece are arranged on the two sides of the reinforced fabric layer respectively, the first fixing piece is provided with a first annular tensioning groove, the second fixing piece is provided with a first tensioning ring matched with the first tensioning groove, and when the first tensioning groove is matched with the first tensioning ring in a buckled mode, the reinforced fabric layer located in the first tensioning groove is in a tensioned state. Through buckling of a first fixing piece and a second fixing piece in the tensioning fixing frame and cooperation of a first tensioning groove and a first tensioning ring, active tensioning of the fabric layer is enhanced, looseness of the fabric layer caused by uneven stress or material fatigue in the membrane body vulcanization process of the membrane is avoided, the deformation resistance of the membrane is improved, and the service life of the membrane is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sealing diaphragm, especially to a cloth sandwiched composite diaphragm. BACKGROUND

[0002] As a key flexible component, the cloth sandwiched composite diaphragm is widely used in sealing, shock absorption and other fields. Its traditional structure relies on adhesive or mechanical pressing to fix the reinforcing fabric layer in the diaphragm body. However, the existing technology has significant defects: the adhesive fixing is easily affected by environmental aging, leading to delamination; the mechanical pressing lacks active pre-tightening force, making it difficult to resist fabric layer relaxation under dynamic load; at the same time, the single fixing method easily causes stress concentration, leading to diaphragm deformation or local cracking, and the additional tensioning structure causes assembly complexity and poor adaptability due to multi-component assembly. These problems seriously restrict the reliability, service life and working condition adaptability of the diaphragm. SUMMARY

[0003] The utility model provides a cloth sandwiched composite diaphragm aiming at the reinforcing fabric layer relaxation defect.

[0004] To solve the above technical problems, the utility model solves them by the following technical scheme: a cloth sandwiched composite diaphragm, comprising a diaphragm body and a reinforcing fabric layer arranged in the diaphragm body, the reinforcing fabric layer is matched with a tensioning fixing frame, the tensioning fixing frame comprises a fixed sheet one and a fixed sheet two buckled with the fixed sheet one, the fixed sheet one and the fixed sheet two are arranged on both sides of the reinforcing fabric layer respectively, the fixed sheet one is provided with an annular tensioning groove one, the fixed sheet two is provided with a tensioning ring one matched with the tensioning groove one, when the tensioning groove one and the tensioning ring one are buckled and matched, the reinforcing fabric layer in the tensioning groove one is in a tensioning state.

[0005] By adopting the above technical scheme, the active tensioning of the reinforcing fabric layer is realized through the buckling of the fixed sheet one and the fixed sheet two in the tensioning fixing frame and the matching of the tensioning groove one and the tensioning ring one, avoiding the relaxation of the fabric layer caused by uneven stress or material fatigue during the vulcanization process of the diaphragm in the diaphragm body, and improving the anti-deformation ability and service life of the diaphragm.

[0006] The utility model is further provided as follows: the fixed sheet one is also provided with a tensioning groove two, the fixed sheet two is provided with a tensioning ring two matched with the tensioning groove two, the tensioning groove two is annular and has a smaller diameter than the tensioning groove one, and the height of the tensioning ring two protruding relative to the fixed sheet two is smaller than the height of the tensioning ring one protruding relative to the fixed sheet two.

[0007] By adopting the above technical scheme, the tensioning groove two and the tensioning ring two with a smaller diameter are added to form a multi-stage tensioning structure, which can apply differential tension to different areas of the reinforcing fabric layer, avoiding local stress concentration caused by single annular tensioning, and improving the overall tensioning uniformity.

[0008] The utility model further sets up: the height of the tension ring two is 0.2 to 0.6 times of the height of the tension ring one.

[0009] By adopting the above technical scheme, by limiting the height ratio of the tension ring two, the synergistic effect of the inner and outer tension rings is optimized, the grading effect of larger outer layer tension and moderate inner layer tension is ensured, which prevents excessive extrusion damage to the fabric layer and ensures overall tension stability.

[0010] The utility model further sets up: the tension ring one and the tension ring two are concentrically arranged.

[0011] By adopting the above technical scheme, the tension ring one and the ring two are concentrically arranged, the tension force is uniformly transmitted to the reinforced fabric layer in the form of concentric circles, the eccentric deformation of the diaphragm caused by asymmetric tension is avoided, and the force balance of the diaphragm is ensured.

[0012] The utility model further sets up: the fixed sheet one and the fixed sheet two are annular sheet bodies, the fixed sheet two is provided with an annular buckle groove for clamping the fixed sheet one, and the tension ring one and the tension ring two are protruded in the annular buckle groove.

[0013] By adopting the above technical scheme, the cooperation of the annular sheet body and the buckle groove simplifies the installation process of the tension fixing frame, and the protruding tension ring in the buckle groove realizes accurate positioning and locking, enhances the compactness of the structure and the assembly reliability.

[0014] The utility model further sets up: the annular buckle groove side wall is provided with a limiting recess, and the fixed sheet one side surface is provided with a limiting convex ring buckled with the limiting convex ring.

[0015] By adopting the above technical scheme, the buckling of the limiting recess and the limiting convex ring further limits the relative displacement of the fixed sheet one and two, prevents the tension fixing frame from loosening due to vibration or external force, and ensures long-term tension effect.

[0016] The utility model further sets up: the outer diameter of the fixed sheet one is greater than the center hole diameter of the diaphragm body and smaller than the outer diameter of the diaphragm body.

[0017] By adopting the above technical scheme, the outer diameter of the fixed sheet one is adapted to the size of the diaphragm body, which ensures the effective coverage of the tension fixing frame on the reinforced fabric layer, avoids interference with other structures of the diaphragm body, and ensures the compatibility of function and structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a kind of cloth composite diaphragm external structure schematic diagram in example;

[0019] Fig. 2is a sectional view of a whole of a cloth sandwiched composite diaphragm in an embodiment;

[0020] Fig. 3 is an enlarged schematic view at A in the figure.

[0021] The names of the parts referred to by the respective reference numerals in the above figures are as follows: 1, diaphragm body; 2, reinforcing fabric layer; 3, tensioning fixing frame; 31, fixed sheet one; 32, fixed sheet two; 33, tensioning groove one; 34, tensioning ring one; 35, tensioning groove two; 36, tensioning ring two; 37, annular buckle groove; 38, limiting recess; 39, limiting convex ring. DETAILED DESCRIPTION

[0022] The utility model will be described in further detail below in combination with the figures and embodiments.

[0023] Embodiment:

[0024] A cloth sandwiched composite diaphragm, referring to Figs. 1 to 3 , comprising a diaphragm body 1, a reinforcing fabric layer 2 arranged in the diaphragm body 1, and a tensioning fixing frame 3 cooperating with the reinforcing fabric layer 2, the tensioning fixing frame 3 comprising a fixed sheet one 31 and a fixed sheet two 32 buckled with the fixed sheet one 31, the fixed sheet one 31 and the fixed sheet two 32 are both annular sheet bodies, the fixed sheet one 31 and the fixed sheet two 32 are arranged on both sides of the reinforcing fabric layer 2 respectively, the fixed sheet one 31 and the fixed sheet two 32 are both annular structures, an annular buckle groove 37 for clamping the fixed sheet one 31 is arranged on one side of the fixed sheet two 32, a limiting recess 38 is arranged on the sidewall of the annular buckle groove 37, a limiting convex ring 39 buckled with the limiting convex ring 39 is protruded on the side surface of the fixed sheet one 31, the bottom surface of the limiting annular buckle groove 37 is protruded with an annular tensioning ring one 34 and an annular tensioning ring two 36, a tensioning groove one 33 and a tensioning groove two 35 are protruded on the side of the fixed sheet two 32 abutting against the bottom surface of the annular slot, the tensioning groove one 33 is arranged in opposite cooperation with the tensioning ring one 34, the tensioning groove two 35 is arranged in opposite cooperation with the tensioning ring two 36, the tensioning groove two 35 is annular and has a smaller diameter than the tensioning groove one 33, the tensioning ring one 34, the tensioning ring two 36, the annular buckle groove 37 and the fixed sheet two 32 are all arranged concentrically, the outer and inner diameters of the fixed sheet one 31 are both larger than the central hole diameter of the diaphragm body 1 and smaller than the outer diameter of the diaphragm body 1.

[0025] The height of the protrusion of the second tension ring 36 relative to the bottom surface of the annular buckle groove 37 is 0.2 to 0.6 times the height of the protrusion of the first tension ring 34 relative to the bottom surface of the annular buckle groove 37, and in this embodiment, 0.5 times, so that the height of the protrusion of the second tension ring 36 relative to the bottom surface of the annular buckle groove 37 is less than the height of the protrusion of the first tension ring 34 relative to the bottom surface of the annular buckle groove 37. The depths of the first tension groove 33 and the second tension groove 35 are the same. When the first fixed sheet 31 and the second fixed sheet 32 are respectively located on both sides of the reinforcing fabric layer 2 to clamp the reinforcing fabric layer 2, the limiting convex ring 39 is matched with the limiting concave groove 38, the first tension groove 33 and the first tension ring 34 are first buckled and matched to tension the reinforcing fabric layer 2, and then the second tension ring 36, which is lower than the first tension ring 34, is used to tension the reinforcing fabric layer 2 located in the inner circle of the first tension ring 34, so as to ensure that the reinforcing fabric layer 2 located in the inner circle of the first tension ring 34 is always in a tension state in the re-vulcanization state.

Claims

1. A cloth-reinforced diaphragm comprising a diaphragm body (1) and a layer of reinforcing fabric (2) arranged in the diaphragm body (1), characterized in that The reinforcing fabric layer (2) is matched with a tensioning fixing frame (3), the tensioning fixing frame (3) comprises a fixing sheet one (31) and a fixing sheet two (32) buckled with the fixing sheet one (31), the fixing sheet one (31) and the fixing sheet two (32) are arranged on the two sides of the reinforcing fabric layer (2) respectively, the fixing sheet one (31) is provided with an annular tensioning groove one (33), the fixing sheet two (32) is provided with a tensioning ring one (34) matched with the tensioning groove one (33), when the tensioning groove one (33) and the tensioning ring one (34) are buckled and matched, the reinforcing fabric layer (2) in the tensioning groove one (33) is in a tensioning state.

2. The sandwich membrane of claim 1, wherein The fixing sheet one (31) is also provided with a tensioning groove two (35), the fixing sheet two is provided with a tensioning ring two (36) matched with the tensioning groove two (35), the tensioning groove two (35) is annular and the diameter is smaller than the tensioning groove one (33), the height of the tensioning ring two (36) protruding from the fixing sheet two (32) is smaller than the height of the tensioning ring one (34) protruding from the fixing sheet two (32).

3. The sandwich membrane of claim 2, wherein The height of the tensioning ring two (36) is 0.2 to 0.6 times of the height of the tensioning ring one (34).

4. The sandwich membrane of claim 2, wherein The tensioning ring one (34) and the tensioning ring two (36) are concentrically arranged.

5. The sandwich membrane of claim 2, wherein The fixing sheet one (31) and the fixing sheet two (32) are annular sheet bodies, the fixing sheet two (32) is provided with an annular buckle groove (37) for clamping the fixing sheet one (31), the tensioning ring one (34) and the tensioning ring two (36) are protruded in the annular buckle groove (37).

6. A sandwich membrane according to claim 5, wherein The side wall of the annular buckle groove (37) is provided with a limiting groove (38), the side surface of the fixing sheet one (31) is protruded with a limiting convex ring (39) buckled with the limiting groove (38).

7. The sandwich membrane of claim 1 wherein, The outer diameter of the fixing sheet one (31) is larger than the central hole diameter of the diaphragm body (1) and smaller than the outer diameter of the diaphragm body (1).

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