Brake cable with two dustproof and sealed ends

Abstract

The brake inhaul cable comprises a steel strand, cable heads fixedly connected to the two ends of the steel strand and an outer sheath movably arranged on the surface of the steel strand in a sleeving mode, the outer sheath is filled with lubricating grease, and outer threaded sleeves movably arranged on the surface of the steel strand in a sleeving mode are fixedly installed at the two ends of the outer sheath respectively. The end of the outer threaded sleeve is in threaded connection with an inner threaded sleeve movably arranged on the surface of the steel strand in a sleeving mode, a packing wrapping the surface of the steel strand is arranged in the inner threaded sleeve, and the surface of the steel strand is sleeved with a folding telescopic pipe located between the cable head and the inner threaded sleeve. The packing wrapping the steel strand is installed at the two ends of the outer sheath through the inner threaded sleeves, lubricating grease in the outer sheath is prevented from flowing out, the folding telescopic pipes are arranged at the two ends of the steel strand for dust prevention, the folding telescopic pipes balance internal and external air pressure through the air holes when stretching out and drawing back, and the dustproof sleeve can shield the air holes for dust prevention. The dustproof effect of the steel strands at the two ends of the outer sheath is achieved, and use is prevented from being affected by stretching resistance of the steel strands.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake cable technical field, concretely is two end dustproof sealing's brake cable. BACKGROUND

[0002] Brake cable is the transmission mechanism of the parking brake on the car, connects the control end and the execution end of the parking brake, and is the prerequisite for the safe parking of the car. At present, the outer sleeve pipe of most of the parking brake cables on the market is not sealed at both ends, only the diameter is reduced, and the gap is relatively large compared with the size of dust and sand. The exposed part of the steel strand of the brake cable is easy to be contaminated with dust and sand during driving, and the expansion and contraction of the steel strand can bring these dust and sand into the outer protective sleeve, resulting in rusting of the steel strand and increase of the expansion and contraction resistance, and it is difficult to reset after a long time of expansion and contraction. There are deficiencies. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides a brake cable with dustproof sealing at both ends, which solves the problem that the outer sleeve pipe of most of the parking brake cables on the market is not sealed at both ends, which is easy to enter dust and sand, resulting in rusting of the steel strand, increase of the expansion and contraction resistance, and difficulty in resetting.

[0004] To solve the above technical problems, the utility model provides the following technical scheme:

[0005] The brake cable with dustproof sealing at both ends comprises a steel strand, a cable head fixedly connected at both ends of the steel strand, and an outer protective sleeve movably sleeved on the surface of the steel strand, the outer protective sleeve is filled with lubricating grease, both ends of the outer protective sleeve are fixedly provided with an outer thread sleeve movably sleeved on the surface of the steel strand, the end of the outer thread sleeve is threadedly connected with an inner thread sleeve movably sleeved on the surface of the steel strand, and the inner thread sleeve is provided with a packing wrapped on the surface of the steel strand;

[0006] The surface of the steel strand is sleeved with a folding expansion pipe between the cable head and the inner thread sleeve, the surfaces of both ends of the folding expansion pipe are respectively bound on the steel strand and the inner thread sleeve through a throat clamp, the surface of the middle part of the folding expansion pipe is provided with an air hole, and the surface of the folding expansion pipe corresponding to the position of the air hole is movably clamped with a dustproof sleeve pipe.

[0007] Preferably, the air hole is arranged on the circumferential side wall between the wave crest and the wave trough of the folding expansion pipe.

[0008] Preferably, the inner part of the dustproof sleeve pipe is fixedly connected with a fixed disc, the central hole of the fixed disc is clamped at the wave trough position on the surface of the folding expansion pipe, and the dustproof sleeve pipe is clamped and installed on the folding expansion pipe through the fixed disc.

[0009] Preferably, the dustproof sleeve and the fixed disc are stainless steel welded integral structures, and both ends of the dustproof sleeve and the central circular hollow position of the fixed disc are smooth chamfered structures.

[0010] Preferably, the length of the dustproof sleeve does not exceed one quarter of the unfolded length of the foldable telescopic tube, and the inner diameter of the dustproof sleeve does not exceed the outer diameter of the foldable telescopic tube at the crest position when the foldable telescopic tube is folded.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The utility model prevents the lubricating grease inside the outer sheath from flowing out by installing the packing wrapped around the steel strand through internal threaded sleeves at both ends of the outer sheath, and folding telescopic tubes are provided at both ends of the steel strand for dust prevention. When the folding telescopic tubes are extended or retracted, the internal and external air pressures are balanced through the air holes. The dustproof sleeves can shield the air holes to prevent dust, thereby achieving the dust-proof effect of the steel strands at both ends of the outer sheath, avoiding the steel strands from being blocked from being extended and retracted and affecting their use, and solving the problem that the outer sleeves of most automobile parking brake cables on the market are not sealed at both ends, and dust and sand are easily introduced, resulting in rust of the steel strand, increased extension and retraction resistance, and difficulty in resetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a structural diagram of the corresponding position of the cable head of the utility model;

[0015] Figure 3 This is a cross-sectional view of the structure at the corresponding position of the cable head of the utility model;

[0016] Figure 4 This is a cross-sectional view of the foldable telescopic tube and the dust-proof sleeve of the utility model;

[0017] Figure 5 This is a cross-sectional view of the dustproof sleeve of the utility model;

[0018] Figure 6 It is a side view of the dustproof sleeve of the utility model.

[0019] In the figure: 1. Steel strand; 2. Cable head; 3. Outer sheath; 4. Externally threaded sleeve; 5. Internally threaded sleeve; 6. Packing; 7. Folding telescopic tube; 8. Hose clamp; 9. Air hole; 10. Dustproof sleeve; 11. Fixed disc. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the present utility model.

[0021] As shown in Figures 1-6 The utility model provides a technical scheme: both ends dustproof seal brake cable, including steel strand 1, the cable head 2 of fixed connection in both ends of steel strand 1 and the outer sheath 3 of movable sleeve set in the surface of steel strand 1, the outer sheath 3 is filled with lubricating grease, both ends of outer sheath 3 are fixedly installed with the outer thread sleeve 4 of movable sleeve set in the surface of steel strand 1, the end of outer thread sleeve 4 is threadedly connected with the inner thread sleeve 5 of movable sleeve set in the surface of steel strand 1, and the inner thread sleeve 5 is provided with the packing 6 wrapped in the surface of steel strand 1;

[0022] The surface of steel strand 1 is provided with the folding telescopic pipe 7 between the cable head 2 and the inner thread sleeve 5, and the surfaces of both ends of the folding telescopic pipe 7 are respectively bound on the steel strand 1 and the inner thread sleeve 5 through the throat hoop 8, and both ends of the steel strand 1 are connected with the control end and the execution end of the parking brake respectively, and the steel strand 1 moves left and right to stretch out and retract in the outer sheath 3 during work, and the folding telescopic pipe 7 is used for dustproof on the surface of the expansion position of the steel strand 1;

[0023] The surface of the middle part of the folding telescopic pipe 7 is provided with the air hole 9, which is used for exhausting air outward when the folding telescopic pipe 7 is contracted and inhaling air inward when the folding telescopic pipe 7 is unfolded, and the air hole 9 is arranged on the circumferential sidewall between the wave crest and the wave trough of the folding telescopic pipe 7, which is convenient for punching during production;

[0024] The surface of the folding telescopic pipe 7 corresponding to the position of the air hole 9 is movably clamped with the dustproof sleeve pipe 10, the inside of the dustproof sleeve pipe 10 is fixedly connected with the fixed disc 11, the central circular hole of the fixed disc 11 is clamped at the wave trough position of the surface of the folding telescopic pipe 7, and the dustproof sleeve pipe 10 is clamped and installed on the folding telescopic pipe 7 through the fixed disc 11, which is used for shielding the part where the air hole 9 is located, so as to avoid that the mud splashes into the folding telescopic pipe 7 from the air hole 9 during the driving of the automobile;

[0025] The dustproof sleeve pipe 10 and the fixed disc 11 are a stainless steel welded integrated structure, and the both ends of the dustproof sleeve pipe 10 and the central circular hole position of the fixed disc 11 are smooth chamfer structures, the length of the dustproof sleeve pipe 10 does not exceed one fourth of the unfolded length of the folding telescopic pipe 7, and the inner diameter size of the dustproof sleeve pipe 10 does not exceed the outer diameter size of the wave crest position when the folding telescopic pipe 7 is folded.

[0026] Working principle:

[0027] The outer sheath 3 is filled with lubricating grease inside, the lubricating effect of the steel strand 1 is improved, the outer sheath 3 is installed with the packing 6 wrapping the steel strand 1 through the inner thread sleeve 5 at both ends, the lubricating grease inside the outer sheath 3 is prevented from flowing out, the folding telescopic pipe 7 is arranged at both ends of the steel strand 1 to prevent dust, the folding telescopic pipe 7 balances the internal and external air pressure through the air hole 9 when being stretched and retracted, the dustproof sleeve 10 can shield and prevent dust from the air hole 9, the dustproof effect of the steel strand 1 at both ends of the outer sheath 3 is realized, and the use of the steel strand 1 is not affected by the stretching and retraction.

[0028] It should be noted that in this document, such as the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A dustproof sealing brake cable with both ends, comprising a steel strand (1), a cable head (2) fixedly connected at both ends of the steel strand (1), and an outer sheath (3) movably sleeved on the surface of the steel strand (1), characterized in that: The outer sheath (3) is filled with lubricating grease, both ends of the outer sheath (3) are fixedly installed with outer threaded sleeves (4) movably sleeving the surface of the steel strand (1), the end of the outer threaded sleeve (4) is threadedly connected with an inner threaded sleeve (5) movably sleeving the surface of the steel strand (1), and the inner threaded sleeve (5) is provided with a packing (6) wrapped around the surface of the steel strand (1); The surface of the steel strand (1) is sleeved with a folding telescopic pipe (7) between the cable head (2) and the inner threaded sleeve (5), the surfaces of both ends of the folding telescopic pipe (7) are tied on the steel strand (1) and the inner threaded sleeve (5) through a throat clamp (8) respectively, the surface of the middle part of the folding telescopic pipe (7) is provided with an air hole (9), and the surface of the folding telescopic pipe (7) corresponding to the position of the air hole (9) is movably clamped with a dustproof sleeve (10).

2. A dust sealed brake cable of the type defined in claim 1, characterised in that: The air hole (9) is arranged on the circumferential side wall between the wave crest and the wave trough of the folding telescopic pipe (7).

3. The dust-sealed brake cable of claim 1, wherein: The inner central part of the dustproof sleeve (10) is fixedly connected with a fixed disc (11), the central hole of the fixed disc (11) is clamped at the wave trough position of the surface of the folding telescopic pipe (7), and the dustproof sleeve (10) is clamped and installed on the folding telescopic pipe (7) through the fixed disc (11).

4. A dust sealed brake cable of the type defined in claim 3, characterised in that: The dustproof sleeve (10) and the fixed disc (11) are a stainless steel welded integrated structure, and both ends of the dustproof sleeve (10) and the central circular hole position of the fixed disc (11) are smooth chamfer structures.

5. The dust-sealed brake cable of claim 1, wherein: The length of the dustproof sleeve (10) is not more than one fourth of the unfolded length of the folding telescopic pipe (7), and the inner diameter size of the dustproof sleeve (10) is not more than the outer diameter size of the wave crest position of the folding telescopic pipe (7) when folded.

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