JPH026253Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention allows the inner cable to be inserted into the outer casing so that it can slide in the axial direction or rotate freely around the axis, and can be operated in the axial direction by pushing and pulling in both directions or in either direction. In the outer casing of a control cable that transmits force or rotational force around an axis, the terminal or middle part of the control cable is fixed to a mounting member such as a bracket to prevent vibration from being transmitted to the cylindrical metal fitting. It relates to an outer casing to which weights are fixed.

Problems to be Solved by Conventional Technologies and Ideas Conventionally, a cylindrical metal fitting was fitted onto the outer casing of a control cable and caulked to secure the terminal or intermediate portion to a mounting member such as a bracket. Furthermore, some metal fittings are fitted with cylindrical weights to lower the natural frequency and prevent vibration transmission, and are fixed by caulking, but the caulking force of the weights If the crimping force is large, the metal fittings that were fixed first will be deformed and the bonding force with the outer casing will be reduced, and the weight will come off along with the metal fittings during use.If the crimping force is even larger, the outer casing will deform and the inner cable will not run smoothly. If the crimping force of the weight is reduced in order to prevent this, the bonding force to the metal fittings becomes insufficient and loosens due to vibration, resulting in the disadvantage that the anti-vibration effect cannot be achieved. .

The object of the present invention is to eliminate such drawbacks and provide an outer casing with a vibration-proofing weight that can firmly fix the weight with a caulking force that does not cause deformation of the fixing metal fittings. It is something.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIGS. 1 and 2 showing the first embodiment, reference numeral 1 denotes an outer casing 3 in which an inner cable 2 made of stranded wire is freely slidably inserted, and the outer casing 3 is a cable made of tightly wound flat steel wire. A synthetic resin liner 3 is placed on the inner periphery of the flexible tube 31.
2 is inserted, and the outer periphery is covered with a jacket 33 made of synthetic resin.The end portion of the jacket 33 is cut off to expose the tube 31, and an elongated metal inner tube 34 is inserted at the rear end. overlap the jacket 33 and fit tightly, and make the tip protrude from the end of the tube 31, the outer periphery of the part A that contacts the tube 31 is hexagonally caulked and fixed, and the part B that overlaps with the jacket 33 It is also crimped into a hexagonal shape to prevent water from entering. An outer cylinder 38 is attached to the distal end side of the inner cylinder 34 via rubber cushions 36 and 37 around a flange 35 projecting on the outer periphery.
is fitted onto the outside and fixed by bending its rear end inward, and the groove 39 formed on the outer periphery of the tip of the outer cylinder 38 is connected to the bracket b protruding from the frame a.
By fitting into the outer casing 3, the terminal of the outer casing 3 is fixed. At the tip of the inner cylinder 34, a sleeve 42, in which a spherical head 41 at the rear end is fitted into a spherical concave surface 40 formed on the inner periphery, is supported so as to swing freely, and the sleeve 42 is slidably fitted into the sleeve 42. The inner cable 2 is connected to the rear end of the rod 43.
A lever 44 is connected to the tip of the rod 43 protruding from the sleeve 42 by a pin 45. On the drive side, the lever 44
4 causes the inner cable 2 to slide in the axial direction inside the outer casing 3 via the rod 43, and the operating force is transmitted to the other end side. The sliding movement causes the lever 44 to swing via the rod 43, and at this time, the rod 43 and sleeve 42 swing at a small angle about the spherical head 41 at the rear end. At the rear end of the inner cylinder 34, there is a cylindrical weight 5 made of a metal with high specific gravity such as lead.
is fitted onto the outside with its front part 51 aligned with the caulking part A of the inner cylinder 34, and is integrally fixed to the inner cylinder 34 by caulking the outer periphery of the front part 51 in a hexagonal shape, and due to its mass. Although the vibration of the outer casing 3 is prevented by lowering the natural frequency, in this embodiment, after fitting the thin-walled cylindrical elastic body 6 to the outer periphery of the inner cylinder 34, The weight 5 is fitted externally to the front part 51.
The hexagonal shape of the inner peripheral surface of the weight 5 and the outer peripheral surface of the inner cylinder 34 is Even when they are not aligned with each other, a substantially uniform pressure acts on the corresponding surfaces, preventing the inner cylinder 34 from deforming and reducing the bonding force with the tube 31, and firmly attaching the weight 5 to the inner cylinder 34. Conventionally, when caulking is performed with a force that does not cause deformation of the inner cylinder 34 or tube 31,
When a torsional moment of about 5 to 20 kg/cm is applied to the weight 5, it rotates around the inner cylinder 34, but even if a torsional moment of 80 kg/cm or more is applied, the weight 5 rotates around the inner cylinder 34. It remains fixed and does not rotate, and the weight 5 weighs 3 to 26 kg.
It has been experimentally confirmed that a material that slips in the axial direction when a load of 100 kg or more is applied remains fixed in one piece and does not slip even when a load of 100 kg or more is applied.

The elastic body 6 is made of natural rubber, neoprene rubber,
Synthetic rubber such as SBR, NBR, polypropylene elastomer, nylon elastomer, soft PVC,
A synthetic resin such as polyester elastomer is appropriately selected and used depending on the purpose.

In the second embodiment of the present invention shown in FIG. In the third embodiment shown in FIG. 4, a triangular chevron-shaped internal thread 53 is formed on the inner circumferential surface of the weight 5, and a matching male thread 62 is formed on the outer circumferential surface. The body 6 is screwed together and fitted, and when the elastic body 6 is fitted to the inner periphery of the weight 5 and externally fitted to the inner cylinder 34, the elastic body 6 is rubbed in the axial direction. This has the advantage that the assembly is improved because the weight 5 is prevented from moving, and the bonding force between the weight 5 and the elastic body 6 after crimping is increased.

In the fourth embodiment shown in FIG. 5, as shown in FIG. 6, a helically wound elastic body 6 is interposed between the inner cylinder 34 and the weight 5 and caulked.

Further, the elastic body 6 may have a woven fabric 63 embedded therein as a reinforcing material, as shown in FIG.

It should be noted that the present invention is applicable not only to the case where the vibration isolating weight is fixed to the terminal fitting of the outer casing as in the above embodiment, but also to the case where it is fixed to the intermediate fitting.

Structure and effects of the device As specifically explained in the above embodiments,
The outer casing with anti-vibration weight of the control cable of the present invention is fixed by caulking after the inner cable is inserted into the outer casing so as to be able to slide freely in the axial direction or rotate freely around the axis. The gist is that a cylindrical anti-vibration weight is fitted onto a cylindrical metal fitting via an elastic body, and the weight is fixed to the metal fitting by caulking. Since the outer peripheral surface of the metal fitting and the inner peripheral surface of the weight are elastically contracted to fill the gap between them, the bonding force between the weight and the metal fitting can be sufficiently increased even if the crimping force is relatively small, and the inner cable While ensuring smooth operation of the weight, the weight is firmly fixed to the outer casing together with the metal fittings, and the vibration prevention function can be reliably achieved.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of the first embodiment of the present invention, and the second
The figure is a sectional view taken along the line shown in FIG. 1, FIGS. 3, 4, and 5 are partially cutaway side views of the second, third, and fourth embodiments, and FIG. 6 is a perspective view of the elastic body used in the fourth embodiment. , 7th
The figure is a partially cutaway perspective view of another embodiment of the elastic body. DESCRIPTION OF SYMBOLS 1... Control cable, 2... Inner cable, 3... Outer casing, 34... Inner cylinder (metal fitting), 5... Weight, 6... Elastic body.

Claims (1)

[Scope of utility model registration request] The inner cable is inserted into the outer casing so that it can freely slide in the axial direction or rotate around the axis. An outer casing with a weight for vibration isolation of a control cable, characterized in that a weight is fitted onto the outside via an elastic body, and the weight is fixed to the metal fitting by caulking.