Ethylene propylene diene monomer part

Abstract

The utility model relates to the technical field of rubber parts, and discloses an ethylene propylene diene monomer part which comprises a corrugated rubber pipe and two rubber clamping sleeves connected with the two ends of the corrugated rubber pipe respectively, an air bag is installed in each rubber clamping sleeve, and an inflating valve with the function of a one-way valve is installed on each air bag. The inflatable air bag is arranged in the rubber clamping sleeve, the penetrating wire harness can be wrapped through expansion of the air bag, then the wire harness is fixed, when a vehicle door is opened and closed, one rubber clamping sleeve can be driven to move, then the wire harness is driven to move along with the rubber clamping sleeve, the phenomenon that the wire harness is bent and broken due to pulling when the vehicle door is opened and closed is avoided, and the service life of the wire harness is prolonged. Meanwhile, the inflation size and adjustment of the air bag meet the requirement for fixing different numbers of wire harnesses, the expanded air bag blocks the inner wall of the rubber clamping sleeve to a certain extent, and therefore when the corrugated rubber pipe is damaged, dust in outside air is not prone to entering the part, protecting the circuit board, of the rubber clamping sleeve, work of the circuit board is prevented from being affected, and practicability and stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber part technical field, concretely is a kind of EPDM rubber parts. BACKGROUND

[0002] EPDM (Ethylene Propylene Diene Monomer) is widely used in the protective sleeve of automobile wiring harness and the fixed protection parts due to its excellent weather resistance, ozone resistance, heat resistance, corrosion resistance and acid and alkali resistance.

[0003] The existing door wiring harness protection sleeve made of EPDM is composed of two parts, including rubber sleeve at both ends and corrugated rubber tube in the middle, wherein the rubber sleeve is used to be sleeved outside the shell of the circuit board, and the corrugated rubber tube is adapted to the opening and closing of the door to realize the protection of the wiring harness and the circuit board.

[0004] However, in actual use, the wiring harness only passes through the protective sleeve, and the protective sleeve lacks restriction on the wiring harness, which can easily cause the wiring harness to bend or break in the protective sleeve when the door is opened and closed. Therefore, an EPDM rubber part is proposed. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides an EPDM rubber part to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an EPDM rubber part, comprising a corrugated rubber tube and two rubber sleeves connected to both ends of the corrugated rubber tube, a gas bag is installed in the rubber sleeve, the middle part of the gas bag is a circular hole structure, and a valve nozzle with a one-way valve function is installed on the gas bag.

[0007] Preferably, the gas bag is movably installed in the rubber sleeve, a through hole is formed in the outer wall of the rubber sleeve, the valve nozzle is movably inserted into the through hole, a sealing cap is threadedly connected to the outer wall of the valve nozzle, and the outer diameter of the sealing cap is larger than the inner diameter of the through hole.

[0008] Preferably, a clearance slot is formed in the end of the through hole close to the inner wall of the rubber sleeve, a baffle is fixedly connected to the outer wall of the valve nozzle, the baffle is movably clamped in the clearance slot, a flat ring is fixedly connected to the outer wall of the rubber sleeve, the flat ring is located at the outer end of the through hole, and the sealing cap abuts against the flat ring.

[0009] Preferably, a separation groove is formed in the outer wall of the gas bag away from the valve nozzle, and the end part of the gas bag located in the separation groove is a sealing structure.

[0010] Preferably, a threaded sleeve is fixedly connected to each end of the corrugated rubber tube, and the threaded sleeve is threadedly connected to the inner wall of one end of the rubber sleeve.

[0011] Preferably, a plurality of wave-shaped protrusions are arranged on the inner wall of the circular hole of the gas bag, and the plurality of wave-shaped protrusions uniformly fill the inner wall of the gas bag.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses a rubber sleeve is provided with inflatable air bag in, through the inflation of air bag can be wrapped the wire harness of setting, further to the fixed wire harness, when the door opens and shuts, will drive one rubber sleeve and remove, further drive wire harness and follow the removal, avoid the wire harness and take place the phenomenon such as bending and pulling fracture when the door opens and shuts, the inflation size and adjustment of air bag meet the fixed wire harness of different quantity, the air bag after inflation still to some extent block the inner wall of rubber sleeve, further when the corrugated rubber tube breaks down, the dust in outside air is not easy to enter the part of rubber sleeve to circuit board protection, avoid the influence circuit board's work, improve practicality and stability.

[0014] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the section structure schematic diagram of rubber sleeve of the utility model;

[0017] Figure 3 It is Figure 2 The local enlarged view of A in;

[0018] Figure 4 It is the structure schematic diagram of air bag of the utility model;

[0019] Figure 5 It is the section structure schematic diagram of air bag of the utility model.

[0020] In the drawing: 1, rubber sleeve;2, corrugated rubber tube;3, air bag;4, air valve;5, sealing cap;6, perforation;7, let -go slot;8, plane ring;9, wave -like convex;10, separation groove;11, threaded sleeve;12, baffle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Referring to Figures 1-5 The utility model discloses a kind of EPDM structure, including corrugated rubber tube 2 and two respectively with the rubber sleeve 1 of connecting the both ends of corrugated rubber tube 2, rubber sleeve 1 and corrugated rubber tube 2 are prepared by EPDM, wherein the strength of rubber sleeve 1 is greater than the strength of corrugated rubber tube 2, air bag 3 is installed in rubber sleeve 1, the middle part of air bag 3 is circular hole structure, air valve 4 is installed on air bag 3, air valve 4 is existing structure, similar or same as common, such as automatic car air inlet, with check valve function, can make air bag 3 internal gas not overflow, when installing, wire harness is passed through the middle circular hole of two rubber sleeve 1, corrugated rubber tube 2 and two air bags 3, then air cylinder or other inflating equipment is used to inflate air bag 3 by air valve 4, so that air bag 3 expands, air bag 3 after expansion is wrapped wire harness, and wire harness is fixed, wire harness is connected with circuit board on door and vehicle body respectively, then rubber sleeve 1 is clamped outside circuit board shell on door and vehicle body, when door is opened and closed, one of rubber sleeve 1 is moved, and then wire harness fixed in rubber sleeve 1 is moved, avoid wire harness to move in rubber sleeve 1 and corrugated rubber tube 2 during door opening and closing, and the phenomenon of bending and pulling breakage occurs, improve the stability of use, simultaneously, air bag 3 can also be according to the thickness of different wire harness group, and different amount of gas is rushed, adapt to the fixing effect of different number of wire harness;Air bag 3 after expansion also blocks the inner wall of rubber sleeve 1 to some extent, and then when corrugated rubber tube 2 is damaged, dust in external air is not easy to enter rubber sleeve 1 to the part of circuit board protection, avoid affecting the work of circuit board, improve practicability.

[0023] Perforation 6 is arranged on the outer wall of rubber sleeve 1, air bag 3 is movably installed in rubber sleeve 1, air valve 4 is movably inserted into perforation 6, and sealing cap 5 is threadedly connected to the outer wall of air valve 4, the outer diameter of sealing cap 5 is greater than the inner diameter of perforation 6, air bag 3 can be removed from rubber sleeve 1, and then when wire harness is passed through rubber sleeve 1, the inner wall of rubber sleeve 1 is not blocked, so that wire harness is conveniently passed through, after wire harness is passed through, wire harness is passed through air bag 3, and air bag 3 is inserted into rubber sleeve 1, so that air valve 4 of air bag 3 passes through perforation 6, at this time, air bag 3 is inflated through air valve 4, so that air bag 3 expands to limit wire harness, and sealing cap 5 is screwed into air valve 4 to limit air bag 3, so that air bag 3 cannot move, sealing cap 5 can also increase the air tightness of air valve 4.

[0024] The through hole 6 is provided with a clearance groove 7 near one end of the inner wall of the rubber sleeve 1, the outer wall of the valve 4 is fixedly connected with a baffle 12, the baffle 12 is movably connected in the clearance groove 7, and when the sealing cap 5 is screwed on the outer wall of the valve 4, the baffle 12 is clamped in the clearance groove 7 to block and limit the valve 4, so as to avoid the phenomenon that the valve 4 brings the air bag 3 into the through hole 6 to damage the air bag 3; the outer wall of the rubber sleeve 1 is fixedly connected with a flat ring 8, the flat ring 8 is located at the outer end of the through hole 6, the sealing cap 5 abuts against the flat ring 8, and after the sealing cap 5 is tightened, the flat outer wall of the flat ring 8 abuts against the sealing cap 5, and the friction between the two can improve the limitation of the sealing cap 5, so as to avoid the phenomenon that the sealing cap 5 is loose.

[0025] The air bag 3 is provided with a separation groove 10 away from the outer wall of the valve 4, and the end of the air bag 3 located in the separation groove 10 is in a sealed structure, so that when there is no gas in the air bag 3, the separation groove 10 can be directly sleeved on the outer wall of the wire harness, facilitating installation.

[0026] The inner wall of the circular hole of the air bag 3 is provided with a plurality of wave-shaped protrusions 9, which can improve the adaptability of wrapping and fixing the wire harness and improve the stability of fixing the wire harness.

[0027] The both ends of the corrugated rubber pipe 2 are fixedly connected with threaded sleeves 11, the threaded sleeves 11 are threadedly connected with the inner wall of one end of the rubber sleeve 1, the hardness of the threaded sleeves 11 is greater than that of the corrugated rubber pipe 2, and then when the wire harness is threaded, the corrugated rubber pipe 2 and the rubber sleeve 1 can be separated, and after threading, the corrugated rubber pipe 2 is connected with the rubber sleeve 1 through the threaded sleeves 11, which is convenient for threading the curved part and facilitates installation.

Claims

1. A three-EP rubber piece, comprising a corrugated rubber tube (2) and two rubber sleeves (1) respectively connected with both ends of the corrugated rubber tube (2), characterized in that, The rubber sleeve (1) is internally provided with an air bag (3), the middle part of the air bag (3) is provided with a circular hole structure, the air bag (3) is internally provided with a valve nozzle (4) with a one-way valve function, the outer wall of the air bag (3) is provided with a separation groove (10) away from the valve nozzle (4), the end of the air bag (3) located in the separation groove (10) is provided with a sealing structure, and the inner wall of the circular hole of the air bag (3) is provided with a plurality of wave-shaped protrusions (9), and the plurality of wave-shaped protrusions (9) uniformly fill the inner wall of the air bag (3).

2. The EPDM article of claim 1, wherein, The air bag (3) is movably arranged in the rubber sleeve (1), the outer wall of the rubber sleeve (1) is provided with a through hole (6), the valve nozzle (4) is movably inserted into the through hole (6), the outer wall of the valve nozzle (4) is threadedly connected with a sealing cap (5), and the outer diameter of the sealing cap (5) is greater than the inner diameter of the through hole (6).

3. The EPDM article of claim 1, wherein, The end of the through hole (6) close to the inner wall of the rubber sleeve (1) is provided with a gap groove (7), the outer wall of the valve nozzle (4) is fixedly connected with a baffle (12), the baffle (12) is movably clamped in the gap groove (7), the outer wall of the rubber sleeve (1) is fixedly connected with a flat ring (8), the flat ring (8) is located at the outer end of the through hole (6), and the sealing cap (5) abuts against the flat ring (8).

4. The EPDM article of claim 1, wherein, The both ends of the corrugated rubber tube (2) are fixedly connected with threaded sleeves (11), and the threaded sleeves (11) are threadedly connected with the inner wall of one end of the rubber sleeve (1).

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