WO2012147794A1

WO2012147794A1 - Control cable

Info

Publication number: WO2012147794A1
Application number: PCT/JP2012/061092
Authority: WO
Inventors: 浩平菱本; 信一西岡; 信裕舟橋; 薫沖田; 八木　幹也
Original assignee: 株式会社ハイレックスコーポレーション
Priority date: 2011-04-25
Filing date: 2012-04-25
Publication date: 2012-11-01
Also published as: MX2013012443A; CN103477098A; JPWO2012147794A1; MX339828B; CN103477098B; JP5813757B2

Abstract

This control cable is provided with: an inner cable; an outer cable within which the inner cable is inserted; a terminal member having an affixing section that affixes to a vehicle body and that is affixed to the end of the outer cable; and a boot that is provided across the inner cable and the terminal member. The terminal member has: a boot-covered section provided to the vicinity of the affixing section; and a flange provided to the tip-side of the boot-covered section. The boot has: an inner cable engagement section that engages the inner cable; a terminal member engagement section that engages the boot-covered section and is in close contact with the boot-covered section across the entire perimeter thereof; and a flange receiving section that receives the flange. The terminal member engagement section has a length that can maintain close contact with the boot-covered section across the entire perimeter thereof, even if the reception state of the flange by the flange receiving section has changed.

Description

Control cable

The present invention relates to a control cable for a vehicle that can prevent water from entering from between an inner cable and a terminal member.

In a vehicle, a control cable for transmitting a shift lever operation performed by a user to a transmission includes an inner cable that connects the rod of the shift lever and the rod of the transmission, and an outer casing through which the inner cable is movably inserted. And a terminal member fixed to the end of the outer casing and having a fixing portion for fixing the control cable to the vehicle body. In the control cable, water such as rainwater may enter between the inner cable and the terminal member at the end portion on the transmission side, and the inner cable and the outer casing may be rusted. When rusting occurs in this way, the inner cable becomes difficult to move, and it becomes difficult to transmit the operation of the shift lever performed by the user to the transmission.

In view of such a situation,

Patent Documents

1 and 2 include a control cable in which a stretchable boot for waterproofing is provided between an inner cable and a terminal member at an end portion on the transmission side of the control cable. It is disclosed. In these control cables, water is prevented from entering between the inner cable and the terminal member by bringing the one end and the other end of the boot into close contact with the inner cable and the terminal member, respectively.

Japanese Utility Model Publication No.59-4813 Japanese Utility Model Publication No. 5-12848

In the control cable disclosed in Patent Document 1, when a fixing portion of a terminal member is inserted into and fixed to a slit provided in a vehicle body, a fixing operator may grip and fix the boot. However, gripping the boot causes the boot to move or deform, creating a gap between the boot and the terminal member, and passing through the gap between the boot and the terminal member to the inner cable and the terminal member. There is a risk of water intrusion.

Also, in the control cable disclosed in Patent Document 2, the seal pressure between the boot and the terminal member is increased by attaching a retainer cap which is a separate member from the boot. Therefore, the boot is difficult to move as compared with the control cable disclosed in Patent Document 1, but the number of parts increases on the other hand, which causes a problem that the assembly of the control cable becomes complicated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a control cable that does not easily cause a gap between a boot and a terminal member without increasing the number of parts.

In order to achieve the above object, a control cable of the present invention includes an inner cable, an outer casing through which the inner cable is inserted, and a terminal member that is fixed to an end of the outer casing and has a fixing portion to the vehicle body. And a control cable comprising a boot provided between the inner cable and the terminal member, wherein the terminal member includes a boot covering portion provided in the vicinity of the fixing portion, and the boot covering portion. The boot includes an inner cable engaging portion that engages with the inner cable; and the boot that engages with the boot covered portion and spans the entire circumference of the boot covered portion. A terminal member engaging portion that is in close contact; and a collar housing portion that accommodates the collar portion, wherein the terminal member engaging portion is changed in the accommodation state of the collar portion by the collar housing portion. Even when the is characterized by having a length capable of maintaining adhesion over the whole circumference of the boot to be instrumentation unit.

(1) In the control cable of the present invention, a terminal member fixed to the outer casing and having a fixing portion to the vehicle body is provided in the vicinity of the fixing portion and on the tip side of the boot covering portion. And has a buttocks. In addition, the control cable is configured such that the end member engaging portion is engaged with the boot member of the terminal member in a state where the boot engaging with the inner cable in the inner cable engaging portion accommodates the collar portion of the terminal member in the collar accommodating portion. It is made to contact with a mounting part and adhere | attaches over the perimeter. In this control cable, even when the housing state of the collar portion by the collar housing portion is changed by, for example, gripping the boot when an operator fixes the fixing portion to the vehicle body, the terminal member engaging portion Has a length capable of maintaining close contact between itself and the boot covered part. Thereby, since this control cable does not impair the contact | adherence over the perimeter of the said terminal member engaging part and the said boot covering part by the change of the accommodation state of the said collar part by the said collar housing part, a boot and a terminal It is difficult for a gap to be formed between the member and the waterproof property can be improved. In addition, this control cable can make the terminal member engaging part closely contact the boot covered part with a high sealing pressure without using a member such as a retainer cap, so the number of parts is small. Assembly is also easy.

(2) In the control cable of the present invention, since the end member engaging portion of the boot has an elastic restoring force, the heel housing portion of the boot follows the change in the housing state of the heel portion of the terminal member. Since it can deform | transform, waterproofness can be improved further. Further, even if the terminal member engaging portion is deformed, the terminal member engaging portion and the boot covered portion of the terminal member can be closely attached, so that the waterproofness can be further improved.

(3) In the control cable of the present invention, since the inner diameter of the end member engaging portion of the boot is smaller than the outer diameter of the boot covered portion of the end member, the end member engaging portion is connected to the boot covered portion. Since a tightening force is applied to the boot covering portion in an attempt to reduce the diameter when engaged, waterproofness is further improved.

The front view of the control cable of this invention. The enlarged front view of an inner cable. (A) An enlarged front view of an outer casing and a terminal member, (b) AA sectional view in (a). (A) The enlarged front view of a boot, (b) BB sectional drawing in (a). The principal part expanded sectional view which shows an assembly completion state. The principal part expanded sectional view which shows an example in the state which the accommodation state of the collar of the terminal member changed in the collar housing part of boots. The principal part expanded sectional view which shows an example in the state which the accommodation state of the collar of the terminal member changed in the collar housing part of boots. The principal part expanded sectional view of a terminal member. The principal part expanded sectional view of boots.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The control cable 1 of the present invention connects a rod of a transmission TR provided on a vehicle and a rod of a shift lever SF. As shown in FIG. 1, the control cable 1 has an inner cable 2 whose one end is connected to the rod of the transmission TR and the other end is connected to the rod of the shift lever SF, and an intermediate portion of the inner cable 2 is moved inside. The outer casing 3 is inserted through the outer casing 3, the

end members

4 and 5 are respectively fixed to one end and the other end of the outer casing 3, and the boot 6 is provided between the inner cable 2 and the terminal member 4.

The control cable 1 transmits the operation of the shift lever SF performed by the vehicle user to the rod of the transmission TR. The control cable 1 is characterized by a configuration on one end side in which a boot 6 is provided between the inner cable 2 and the terminal member 4, and the following description will focus on the configuration.

At one end of the inner cable 2, as shown in FIG. 2, a metal rod end 8 is connected to a wire 7 made of metal or the like. An inner end 9 shown in FIG. 1 for connecting to the rod of the shift lever SF is connected to the other end of the wire 7 at the other end of the inner cable 2.

As shown in FIG. 2, the rod end 8 has a cylindrical rod shape, and engages the guide rod portion 8a to which one end of the wire 7 is connected and the boot 6 shown in FIGS. 4 (a) and 4 (b). An engaging portion 8b and a connecting portion 8c connected to a rod of the transmission TR using a through hole formed in the center portion are provided.

As shown in FIG. 2, the engaging portion 8 b is provided with a protruding portion 81 b that protrudes in an annular shape in a direction perpendicular to the axial direction of the rod end 8 at the end portion on the guide rod portion 8 a side. A protruding portion 82 b that protrudes in an annular shape in a direction perpendicular to the axial direction of the rod end 8 is provided at the end on the connection portion 8 c side. Between the projecting portions 81b and 82b, there is provided a columnar boot mounting portion 83b having a larger diameter than the guide rod portion 8a and a smaller diameter than the projecting portions 81b and 82b.

The outer casing 3 is formed by stacking a plurality of metal layers and resin layers, and has flexibility. The outer casing 3 has a hollow pipe shape as shown in FIG. 3B, and the wire 7 of the inner cable 2 shown in FIG. 2 is movably inserted therein.

As shown in FIGS. 3A and 3B, the terminal member 4 is inserted with a metal casing cap 10 to which one end of the outer casing 3 is inserted and fixed, and a guide rod portion 8 a of the rod end 8. And a metal socket 13 that connects the casing cap 10 and the guide pipe 11 together with the anti-vibration rubber 12 by housing them inside. The terminal member 4 is connected in a state where the axial directions of the casing cap 10, the guide pipe 11, the anti-vibration rubber 12 and the socket 13 are matched.

As shown in FIG. 3B, the casing cap 10 is formed in a cylindrical shape, and includes a protruding portion 10a that protrudes in an annular shape from the outer surface in a direction perpendicular to the axial direction. The casing cap 10 is a hole that is provided along the axial direction and is open at one end face, and is connected to the outer casing fixing portion 10b and the outer casing fixing portion 10b. There is provided a wire insertion portion 10c that is formed to have a smaller diameter than the portion 10b, opens to the end surface on the other end side, and allows the wire 7 shown in FIG.

As shown in FIG. 3B, the guide pipe 11 is formed in a straight pipe shape, and is connected to the guide rod portion 8a of the rod end 8 of the inner cable 2 inserted from one end and the guide rod portion 8a. The inserted wire 7 is movably inserted. A spherical portion 11 a formed in a spherical shape is formed on the outer periphery of the other end of the guide pipe 11. When the spherical portion 11a is held by the socket 13 via the vibration isolating rubber 12, the one end side of the guide pipe 11 is swung within a predetermined range as indicated by arrows in FIGS. 3 (a) and 3 (b). It is possible.

As shown in FIG. 3B, the anti-vibration rubber 12 is formed in a cylindrical shape, and includes a protruding portion 12a protruding in an annular shape from the outer surface in a direction perpendicular to the axial direction. The anti-vibration rubber 12 is a hole that is provided along the axial direction and is open to one end face, and a casing that holds the other end of the casing cap 10 together with a protrusion 10 a provided on the outer surface of the casing cap 10. A cap holding part 12b is provided. The anti-vibration rubber 12 includes a guide pipe holding portion 12 c that is a spherical hole that communicates with the casing cap holding portion 12 b and opens to the end surface on the other end side and holds the spherical portion 11 a of the guide pipe 11.

As shown in FIGS. 3A and 3B, the socket 13 has a cylindrical shape in which a stepped portion 13c is formed by a cylindrical large-diameter portion 13a and a cylindrical small-diameter portion 13b having a smaller diameter than the large-diameter portion 13a. It is. The socket 13 includes an accommodation portion 13 d that accommodates the other end side of the casing cap 10 and the spherical portion 11 a of the guide pipe 11 together with the antivibration rubber 12.

As for the socket 13, the washer 14 is attached to the end surface on the opposite side to the level | step-difference part 13c in the large diameter part 13a. A projecting portion 13e that projects in an annular shape from the inner surface in a direction perpendicular to the axial direction is provided on the end surface of the small diameter portion 13b opposite to the stepped portion 13c. Thereby, the other end side of the casing cap 10 accommodated in the accommodating portion 13d and the spherical portion 11a of the guide pipe 11 and the vibration isolating rubber 12 are prevented from jumping out.

The socket 13 includes a flange 13f that protrudes in an annular shape from the outer surface in a direction perpendicular to the axial direction on the distal end side of the small diameter portion 13b opposite to the stepped portion 13c. The socket 13 includes a protruding portion 13g that protrudes in an annular shape in a direction perpendicular to the axial direction from the outer surface of the small diameter portion 13b near the stepped portion 13c between the stepped portion 13c and the flange portion 13f.

The socket 13 is a portion sandwiched between the flange portion 13f and the protruding portion 13g of the small-diameter portion 13b, and an outer surface thereof can be in close contact with the inner surface of the terminal member engaging portion 6d of the boot 6. Is provided. The socket 13 is a portion sandwiched between the stepped portion 13c and the protruding portion 13g of the small diameter portion 13b, and includes a fixing portion 13i for fixing the control cable 1 to the vehicle body of the vehicle not shown.

As shown in FIGS. 4 (a) and 4 (b), the boot 6 is made of a material having an elastic restoring force such as rubber, and has a hollow tube shape that penetrates between both ends. The boot 6 is adjacent to the inner cable engaging portion 6a that engages with the engaging portion 8b of the rod end 8, the bellows portion 6b that is configured to be expandable and contractable adjacent to the inner cable engaging portion 6a, and the bellows portion 6b. Then, the air reservoir 6c that adjusts the air pressure inside the boot 6 by swelling or deflating according to the expansion and contraction of the bellows portion 6b, and the terminal member that covers the boot covered portion 13h of the terminal member 4 adjacent to the air reservoir 6c. It has the engaging part 6d and the collar accommodating part 6e formed in the inner surface of the terminal member engaging part 6d.

As shown in FIG. 4B, the inner cable engaging portion 6a is formed with a protruding portion 61a protruding in an annular shape from the inner surface in a direction perpendicular to the axial direction.

The terminal member engaging portion 6d has a predetermined length L1 along the axial direction, as shown in FIG. The inner diameter φ1 of the terminal member engaging portion 6d is formed to be smaller than the outer diameter φ2 of the boot covered portion 13h of the socket 13 of the terminal member 4.

As shown in FIG. 4 (b), the hook housing part 6 e is formed to be recessed in an annular shape from the inner surface of the terminal member engaging part 6 d, and houses the hook part 13 f of the socket 13 of the terminal member 4.

One end side of the control cable 1 of the present invention in which the boot 6 is provided between the inner cable 2 and the terminal member 4 using the inner cable 2, the outer casing 3, the terminal member 4 and the boot 6 described above. The assembly procedure will be described.

First, the boot 6 is attached to the inner cable 2. This is because the protrusion 61 a provided on the inner cable engaging portion 6 a of the boot 6 is mounted between the protrusions 81 b and 82 b formed on the engaging portion 8 b of the rod end 8 of the inner cable 2. The projecting portion 61a is brought into close contact with the boot mounting portion 83b over the entire circumference. At this time, the protruding portion 61a of the inner cable engaging portion 6a has a smaller inner diameter than the outer diameter of the boot mounting portion 83b, so that it tightly adheres to the boot mounting portion 83b by applying a tightening force.

Next, the inner cable 2 to which the boot 6 is attached is inserted through the outer casing 3 and the terminal member 4. This is because the inner cable 2 with the boot 6 attached is inserted into the one end side of the guide pipe 11 of the terminal member 4 from the other end side of the wire 7 and the rod end to which one end of the inner cable 2 is fixed. This is done by inserting 8 guide rod portions 8 a into the guide pipe 11. By this insertion, the boot 6 is fitted onto the guide pipe 11.

Next, the tip end side of the terminal member 4 is covered with the boot 6. This is because the boot 6 is moved to the socket 13 side of the terminal member 4, and as shown in FIG. 5, the boot covered portion 13 h of the socket 13 and the flange portion 13 f provided on the tip end side thereof are This is done by covering with the terminal member engaging portion 6d. Thereby, the collar part 13f is accommodated in the collar accommodating part 6e formed in the inner surface of the terminal member engaging part 6d. The inner surface of the terminal member engaging portion 6d closer to the end than the flange housing portion 6e is fitted between the flange portion 13f formed on the outer surface of the small diameter portion 13b of the socket 13 and the protruding portion 13g. At this time, the outer diameter φ2 of the boot covered portion 13h formed between the flange portion 13f and the protruding portion 13g is the flange housing portion 6e of the terminal member engaging portion 6d before the distal end side of the terminal member 4 is covered. The terminal member engaging portion 6d is pressed by the boot covered portion 13h to expand its diameter by being larger than the inner diameter φ1 of the portion excluding the portion, and tightly adheres to the boot covered portion 13h by applying a tightening force. To do. Thus, the assembly on one end side of the control cable 1 of the present invention is completed.

Here, in the control cable 1 of the present invention, as shown in FIG. 5, the fixing portion 13i provided in the socket 13 of the terminal member 4 is inserted into the slit of the bracket 15 provided in the vehicle body of the vehicle not shown. To fix it to the car body. The fixing portion 13 i is provided in the vicinity of the boot covered portion 13 h of the socket 13 that is in close contact with the terminal member engaging portion 6 d of the boot 6. For this reason, there is a possibility that the fixing operator grips the boot 6 when the control cable 1 is fixed to the vehicle body.

When the fixing operator grips the boot 6 and performs the fixing operation to the vehicle body, a torsional force or the like is applied to the boot 6, and the flange 13 f of the socket 13 of the terminal member 4 in the flange accommodating portion 6 e of the boot 6 is applied. Changes may occur in the containment state. For example, as shown in FIG. 6, in a part of the circumferential direction of the heel housing portion 6e, only about half of the heel portion 13f is accommodated, or as shown in FIG. May change to a state in which the flange 13f is not accommodated at all.

Even in such a case, in the control cable 1 of the present invention, the length L1 along the axial direction of the terminal member engaging portion 6d changes the accommodation state of the collar portion 13f in the collar housing portion 6e, Even when the state shown in FIGS. 6 and 7, or when the heel housing portion 6 e is in a state of accommodating only a part of the heel portion 13 f, the outer surface of the boot covered portion 13 h and the inside of the terminal member engaging portion 6 d It is a length that can maintain watertight adhesion with the entire surface.

Therefore, in the control cable 1 of the present invention, even when the accommodation state of the collar part 13f by the collar accommodating part 6e changes, the entire circumference of the outer surface of the boot covered part 13h and the inner surface of the terminal member engaging part 6d Since the water-tight adhesion is not impaired, the waterproof property can be improved.

The control cable 1 of the present invention closely adheres the inner surface of the end member engaging portion 6d to the outer surface of the boot covered portion 13h with a high sealing pressure without using a member such as a retainer cap (not shown). it can. Therefore, the number of parts to be used is small and assembly is easy.

In the control cable 1 of the present invention, the boot 6 is made of a material having an elastic restoring force. Therefore, even if the terminal member engaging portion 6d is deformed following the change in the housing state of the collar portion 13f in the collar housing portion 6e and the terminal member engaging portion 6d is deformed, the inside of the terminal member engaging portion 6d is Since the entire surface can be closely attached to the outer surface of the boot covered portion 13h on the surface, the waterproof property can be further improved. The boot 6 may be configured such that at least the terminal member engaging portion 6d has an elastic restoring force, and other portions do not have an elastic restoring force.

The control cable 1 of the present invention is configured such that the inner diameter φ1 of the terminal member engaging portion 6d is smaller than the outer diameter φ2 of the boot covered portion 13h, and the terminal member engaging portion 6d covers the boot covered portion 13h. In order to reduce the diameter, a tightening force is applied to the boot covered portion 13h. Thereby, the contact | adhesion power over the perimeter to the outer surface of the boot covering part 13h in the inner surface of the terminal member engaging part 6d can further be raised, and waterproofness can be improved further.

Hereinafter, although the test conducted in order to confirm the performance of the control cable 1 of the present invention will be described by way of specific examples, the control cable 1 of the present invention is not limited by the examples.

In this test, the outer diameter φ2 of the boot covered portion 13h of the socket 13 of the terminal member 4 shown in FIG. 8 was 18.5 mm, and the width d1 along the axial direction of the boot covered portion 13h was 8.5 mm. The protruding height t1 of the flange portion 13f of the socket 13 from the outer surface of the boot covered portion 13h is 1.5 mm, and the width d2 along the axial direction of the flange portion 13f is 3.7 mm. In addition, the socket 13 was comprised using the carbon steel for cold heading (SWCH) or mild steel (SWRM).

In this test, the length L1 along the axial direction of the terminal member engaging portion 6d of the boot 6 shown in FIG. 9 is 15.5 mm, and the inner diameter φ1 of the portion excluding the collar housing portion 6e of the terminal member engaging portion 6d is set. The thickness t2 of the portion excluding the collar housing portion 6e in the direction perpendicular to the axial direction of the terminal member engaging portion 6d is 3.8 mm, which is closer to the end side than the collar housing portion 6e of the terminal member engaging portion 6d. The width d3 was set to 9.0 mm. The depth d4 from the inner surface of the terminal member engaging portion 6d of the heel housing portion 6e of the boot 6 was 2.3 mm, and the width d5 along the axial direction of the heel housing portion 6e was 3.5 mm. The boot 6 was made of ethylene-propylene-diene rubber (EPDM) having a hardness of 35 ° as measured with a durometer type A.

The socket 13 and the boot 6 configured as described above were assembled as shown in FIG. Specifically, by covering the boot covered portion 13h and the flange portion 13f of the socket 13 with the terminal member engaging portion 6d of the boot 6, the flange portion 13f is accommodated in the flange accommodating portion 6e of the boot 6, and the terminal The inner surface of the member engaging portion 6d was brought into close contact with the outer surface of the boot covered portion 13h.

In the above-described state, the boot 6 is gripped and a torsional force is applied, such as the state shown in FIGS. 6 and 7, the heel housing portion 6 e housing only a part of the heel portion 13 f, etc. The accommodation state of the flange part 13f by 6e was variously changed, and the state of close contact between the inner surface of the terminal member engaging part 6d and the outer surface of the boot covered part 13h at that time was confirmed in a room temperature environment.

As a result, in any case, the inner surface of the terminal member engaging portion 6d and the outer surface of the boot covered portion 13h were in close water-tight contact over the entire circumference. From this, it was confirmed that the control cable 1 of the present invention can exhibit high waterproofness even when the accommodation state of the collar portion 13f by the collar housing portion 6e changes.

The control cable 1 of the present invention described above is only one aspect of the control cable according to the present invention, and various modifications can be made without departing from the gist of the present invention.

For example, the mounting position of the boot 6 to the inner cable 2 and the terminal member 4 is not limited to the above. For example, the boot 6 may be mounted to the guide rod portion 8 a of the rod end 8.

The control cable according to the present invention can be used as a vehicle control cable.

DESCRIPTION OF SYMBOLS 1 Control cable 2 Inner cable 3 Outer casing 4 End member 6 Boot 6a Inner cable engaging part 6d End member engaging part 6e 鍔 accommodating part 13g Protruding part 13h Boot covered part 13i Fixed part

Claims

An inner cable,
An outer casing through which the inner cable is inserted;
A terminal member fixed to the end of the outer casing and having a fixing part to the vehicle body;
In a control cable comprising a boot provided between the inner cable and the terminal member,
The terminal member has a boot covering portion provided in the vicinity of the fixing portion, and a flange portion provided on a tip side of the boot covering portion,
The boot includes an inner cable engaging portion that engages with the inner cable, a terminal member engaging portion that engages with the boot covered portion and closely contacts the boot covered portion, and the flange portion. And a bag storage portion for storing,
The control cable characterized in that the terminal member engaging portion has a length capable of maintaining close contact with the boot covered portion even when the housing state of the collar portion by the collar housing portion changes. .
The control cable according to claim 1, wherein the terminal member engaging portion has an elastic restoring force.
The control cable according to claim 1, wherein an inner diameter of the terminal member engaging portion is smaller than an outer diameter of the boot covering portion.