JP2600096Y2 - Lead wire clamp for cylinder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead wire clamp used for holding a lead wire connected to a hydraulic rodless cylinder used as, for example, an industrial driving device.

[0002]

2. Description of the Related Art Conventionally, a piston fitted in a cylindrical cylinder is reciprocated in the longitudinal direction by air pressure to thereby fix a rod fixed to an end face of the piston and protruding outward from one end face of the cylinder. Rod type cylinders for moving forward and backward are widely used. However, rod-type cylinders
Extra space is required for the rod stroke in the longitudinal direction of the cylinder. Therefore, a cylinder having a cut groove that opens over the entire length in the longitudinal direction of the side surface, a piston that has a connecting portion protruding from the cut groove to the outside and is slidably held in the cylinder, and a seal that closes the cut groove A rodless cylinder with a band is used.

[0003] Among the rodless cylinders, there is a guideless rodless cylinder shown in FIG. FIG. 1A is a sectional view thereof, and FIG. 1B is a side view thereof. The connecting portion 3 connected to the piston is held so as to surround the cylinder 8 and reciprocates in the longitudinal direction of the cylinder 8 according to the piston. Here, the cylinder switch 5 is used to detect the position of the cylinder 8. The lead wire 6 for operating the cylinder switch 5 is connected to the cylinder switch groove 4.
Is held along. To hold this lead wire 6,
Conventionally, a clamp tie 20 shown in FIG. 6 has been used.

The basic structure of the clamp tie 20 is a flexible belt body 1 having a large number of locking teeth arranged on one side.
9 and a buckle body 18 integrally provided at the base end thereof. The buckle body 18 has an insertion hole through which the belt body 19 is inserted, and the belt body 19 is inserted into the insertion hole. An engaging tongue is provided for engaging the locking teeth. The buckle body 18 is fixed to the cylinder switch groove 4 on the side surface of the cylinder by a bolt 17 and a plate-like nut 16 movable along the groove in the cylinder switch groove 4.

The operation of the clamp tie 20 having such a configuration will be described. The belt body 19 is wound around the lead wire 6, and the free end of the belt body 19 is inserted into the insertion hole of the buckle body 18 and pulled out from the opposite side. Then, the locking teeth of the belt body 19 are engaged with the engaging tongue pieces in the insertion holes of the buckle body 18, the belt body 19 does not come off, and the lead wires 6 are bound by this clamp. Therefore, the lead wire 6 is fixed to the cylinder switch groove 4 together with the clamp tie 20.

[0006]

However, according to such a conventional clamp, the lead wire is held in a state of protruding from the side surface of the cylinder. Therefore, when the guide moves left and right, there is a risk that the lead wire may be rubbed against the lead wire, the covering material of the lead wire may be broken, or the lead wire may be broken. This is a major problem when using a rodless cylinder of the type shown in FIG.

That is, the guide 21 for guiding the sliding of the connecting portion 3 of the rodless cylinder has been conventionally mounted on the upper portion of the side of the cylinder. Recently, however, the guide 21 is shown in FIG. One that is attached to the lower portion of the cylinder side is known. In this case, since the connecting portion 3 completely covers the cylinder switch groove, there is a great risk that the lead wire is particularly rubbed by the connecting portion 3 and cut.

The present invention has been made in order to solve the above-mentioned problems. Even when the present invention is used for a guideless rodless cylinder of the type shown in FIG. SUMMARY OF THE INVENTION It is an object of the present invention to provide a lead wire clamp capable of easily and smoothly performing a bundling operation by a wire bundling operator and having a good tightening state.

[0009]

In order to achieve this object, a cylinder lead wire clamp for a cylinder according to the present invention is movable and fixed along a cylinder switch groove formed in a longitudinal direction of a side surface of the cylinder. A lead wire clamp for a cylinder for fixing a lead wire to be connected to a cylinder, a lid portion for holding the lead wire, and a length longer than the depth of the cylinder switch groove integrally formed on a side surface of the lid portion and having a tip. A locking portion is formed on the outside and the inside is elastically deformed, so it has a cylinder switch groove and a removable leg, and when the leg is installed in the cylinder switch groove, the tip of the leg contacts the bottom of the cylinder switch Then, the leg portion is elastically deformed inward and presses the bottom surface of the cylinder switch groove, whereby the leg portion is fixed in the line direction of the lead wire.

Further, the cylinder lead wire clamp of the present invention is a cylinder lead for fixing a lead wire connected to a cylinder switch movable and fixable along a cylinder switch groove formed in a longitudinal direction of a side surface of the cylinder. A wire clamp that is formed integrally with the lid that holds the lead wire and the side of the lid, and has a locking portion formed on the outer end of the tip. The lid and the leg are fixed in the line direction of the lead by pressing the cover of the lead.

[0011]

The cylinder of the rodless cylinder of the present invention comprising the above means holds the piston slidably, receives air supply, seals the air, and supplies air pressure to the piston. The piston slides longitudinally inside the cylinder under the pressure of the air supplied into the cylinder,
A connecting portion projecting outward from the cut groove is slid in the longitudinal direction of the cylinder along the cut groove on the cylinder side wall.

[0012] The cylinder switch detects the position of the piston in the cylinder by a magnet or the like attached to the piston. The lead wire sends current to the cylinder switch and transmits the detection result of the cylinder switch to the outside. In the lead wire clamp, two lead wires with a covering portion are sandwiched between both sides of the central separating portion and pushed into the cylinder switch groove.

[0013] At this time, when the leg portion bends inward at one end and returns to the original position again, the locking portion of the leg portion is engaged with the protruding portion of the cylinder switch groove and cannot be easily removed in the reverse direction. The lid is overlaid on the lead wire, and the lead wire does not go outside. Also, when the leg is mounted in the cylinder switch groove, the tip of the leg contacts the bottom surface of the cylinder switch, and the leg elastically deforms inward to press the bottom surface of the cylinder switch groove. Is fixed in the direction of the lead wire. In addition, since the lid and the leg press the covering portion of the lead wire, the clamp is fixed in the line direction of the lead wire.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a rodless cylinder with a guide, which is an embodiment of the present invention, will be described with reference to the drawings. Here, the same reference numerals are used for the same components as in the prior art. FIG. 1A is a cross-sectional view of a rodless cylinder with a guide, and FIG. 1B is a side view of the rodless cylinder with a guide.

The rodless cylinder 1 has, as main components, an elongated cylindrical cylinder body 8 and a pair of pistons which are fitted and slid on the inner surface of the cylinder. The holes at both ends of the cylinder body 8 are sealed by a pair of end caps 2. On the outer periphery of the cylinder body 8, a cut groove is opened over the entire length in the longitudinal direction.

The pair of pistons are connected to each other by a connecting portion 3 to which a guide portion projecting from the cut groove to the outside is fixed, and is held slidably in the cylinder body 8 integrally.
A lip-shaped seal packing is fitted in a groove formed on the outer peripheral surface of the pair of pistons.

A cylinder switch groove 4 is formed on the side surface of the cylinder body 8 over the entire length in the longitudinal direction, and a pair of cylinder switches 5 for detecting the positions of a pair of pistons are fitted. A lead wire 6 having a two-core covering portion for operating the pair of cylinder switches 5 is arranged in the cylinder switch groove 4 along the side surface of the cylinder body 8.
The lead wire 6 is held in the cylinder switch groove 4 by arranging the lead wire clamps 7 at several places.

FIG. 2 is a sectional view showing a state where the lead wire clamp 7 holds two lead wires 6 for a pair of cylinder switches 5. FIG. 3 is an external perspective view of the lead wire clamp 7. The cylinder switch groove 4 has protrusions 9 protruding inward in the groove along the longitudinal direction on both sides of the opening. The width of the lid portion 11 of the lead wire clamp 7 is larger than the interval between the protruding portions 9, and the upper end has a semi-cylindrical shape that draws a smooth curve. The legs 13 are protruding ends 1 at both ends of the lid 11.
A pair is formed slightly inside from two.

Here, the space W1 outside the leg 13 is formed so as to be equal to the space W2 between the protrusions 9 of the cylinder switch groove 4. A locking portion 14 is formed at the tip of the leg portion 13 so as to face outward. Further, the lower end of the leg portion 13 is formed in a tapered shape so as to be slightly smaller than the interval W2 between the projecting portions 9 of the cylinder switch groove 4. This is to make it easier to insert the lead wire clamp 7 into the cylinder switch groove 4.

Further, the length W 5 of the legs 13, is formed longer than the depth W4 of the cylinder switch groove 4. Thus, when the lead wire clamp 7 is mounted on the cylinder switch groove 4, the leg 13 is elastically deformed inward and the leg 1
Since the distal end of 3 presses the bottom surface of the cylinder switch groove, the lead wire clamp 7 is fixed in the groove direction of the cylinder switch groove 4. At the center of the lid 11, a central separating portion 15 for separating and holding the two lead wires 6 is formed. Here, the inside of the lower end of the leg portion 13 and the lower end of the center separating portion 15 are made slightly thicker so that the lead wire 6 can be easily held by pressing the lead wire 6.

Next, the lead wire clamp 7 having the above configuration
The operation of will be described. When the lead wires 6 are bound by the lead wire clamp 7 configured as described above, first,
Two lead wires 6 connected to the respective cylinder switches 5 are pushed between the leg portion 13 and the center separation portion 15 respectively. At this time, if the leg portion 13, the center separating portion 15, and the lid portion 11 slightly press the covering portion of the lead wire 6, the lead wire clamp 7 is fixed to the lead wire, and workability is good.

Then, the user holds the lid 11 and fits the cylinder switch groove 4. The leg 13 is pushed toward the inside of the cylinder switch groove 4 in a state where the lower end of the leg 13 enters between the protrusions 9 of the cylinder switch groove 4. Then, the leg 13 bends inward, the lead wire clamp 7 enters the inside of the cylinder switch groove 4, and stops when the lid 11 hits the protrusion 9 of the cylinder switch groove 4. At this time, the leg portion 13 returns to its original position, and the locking portion 14 is
, So that it cannot be easily pulled out.

Accordingly, the lead wire 6 is clamped inside the cylinder switch groove 4, and there is no possibility that the lead wire 6 will be rubbed against the guide member 3 and damaged. Elastic Further, the length W 5 of the legs 13 are formed longer than the depth W4 of the cylinder switch groove 4, when mounting the lead clamp 7 to the cylinder switch groove 4, the legs 13 inwardly Since the tip of the leg 13 is deformed and presses the bottom surface of the cylinder switch groove, the lead wire clamp 7 is fixed in the groove direction of the cylinder switch groove 4.

By providing the anti-slip member inside the leg portion 13 and at the center separation portion as shown in FIGS. 4 and 5, the lead wire 6 can be more firmly clamped. That is, since the leg 13, the lid 11, and the center separating part 15 press the covering part of the lead wire 6, the lead wire clamp 7 is fixed in the line direction of the lead wire 6 and does not move.
This effect is further enhanced by forming an anti-slip member on the inner wall of the leg 13.

FIG. 4 shows a small protrusion 22 provided as an anti-slip member. FIG. 5 shows that the jagged portion 23 is formed on the inner surface of the leg portion 13 and the central separating portion 15 to prevent slippage. Since the projection 22 and the projection of the notch 23 bite into the covering of the lead wire 6, the lead wire clamp 7 does not move in the direction of the lead wire, and the lead wire 6 is securely and securely inserted into the cylinder switch groove 4. Can be stored inside.

[0026]

As is apparent from the above description, when the lead wire clamp is mounted in the cylinder switch groove, the tip of the leg elastically deforms and presses the bottom surface of the cylinder switch groove. Since the clamp is fixed in the groove direction of the cylinder switch groove, the lead wire is securely stored in the cylinder switch groove when the lead wire is clamped, so the lead wire clamp does not move after mounting, and the rodless cylinder Even if the connecting portion slides, it is safe without rubbing and without causing trouble.

Further, according to the cylinder lead wire clamp of the present invention, the lid for holding the lead wire and the locking portion formed integrally on the side surface of the lid and formed on the outer side of the tip and elastically deformed on the inner side. By having a cylinder switch groove and a detachable leg, the lid and the leg are fixed in the direction of the lead wire by pressing the cover of the lead wire, so that the lead wire is clamped. In this case, the lead wire is securely housed in the cylinder switch groove, so that even if the connecting portion of the rodless cylinder slides, the lead wire is not rubbed, and the trouble is not caused and no trouble occurs.

Further, since the clamp presses the covering portion of the lead wire, the clamp does not move in the direction of the lead wire, so that the workability at the time of mounting is good, and the clamp does not move even after mounting. High safety.

[Brief description of the drawings]

FIG. 1 is an external view of a rodless cylinder with guide according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which the clamp of the embodiment of the present invention tightens the lead wire.

FIG. 3 is an external perspective view of the clamp according to the embodiment of the present invention;

FIG. 4 is an external perspective view of a lead wire clamp according to a second embodiment.

FIG. 5 is an external perspective view of a lead wire clamp according to a third embodiment.

FIG. 6 is a cross-sectional view showing a state in which a conventional lead wire clamp tightens a lead wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rodless cylinder 3 Guide part 4 Cylinder switch groove 5 Cylinder switch 6 Lead wire 7 Lead wire clamp 8 Cylinder main body 11 Lid 13 Leg 14 Locking part 15 Center separation part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 62-59307 (JP, U) Japanese Utility Model Sho 59-189979 (JP, U) Japanese Utility Model Sho 59-191780 (JP, U) Japanese Utility Model Hei 4- 18782 (JP, U) JP-A 60-172236 (JP, U) JP-A 4-109204 (JP, U) JP-B 53-37554 (JP, B2) JP-B 57-2601 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) F15B 15/00-15/28 F16B 2/02 H02G 3/26

Claims (2)

(57) [Scope of request for utility model registration] 1. A lead wire (6) connected to a cylinder switch (5) movable and fixable along a cylinder switch groove (4) formed in a longitudinal direction of a side surface of a cylinder (8). In the cylinder lead wire clamp, a lid portion (11) for covering the entire surface of the lead wire (6) from the lead wire mounting direction and pressing the same, and a length (W) integrally formed on a side surface of the lid portion (11).
5) is longer than the depth (W4) of the cylinder switch groove (4), and a locking portion (14) is formed on the outer end of the tip, and is elastically deformed inward to be detachable from the cylinder switch groove (4). A free leg (13), and when the leg (13) is mounted in the cylinder switch groove (4), the tip of the leg (13) contacts the bottom surface of the cylinder switch groove (4). The leg (13) is elastically deformed inward and presses the bottom surface of the cylinder switch groove (4) to be fixed in the line direction of the lead wire (6). Wire clamp. 2. A lead wire (6) with a covering portion connected to a cylinder switch (5) movable and fixed along a cylinder switch groove (4) formed in a longitudinal direction of a side surface of a cylinder (8). In a cylinder lead wire clamp for fixing, a lid (11) for holding the lead wire (6), and a lid (11) formed integrally with a side surface of the lid (11);
A locking portion (14) is formed on the outside of the tip, and the lid portion is formed on the inside.
An anti-slip member (22, 23) integrally formed of the same material as (11) is formed, and is elastically deformed inward to connect the cylinder switch groove (4) to the detachable leg (13). When the lid (11) and the leg (13) press the coating of the lead wire (6), the slip prevention members (22, 23) press the coating. The lead wire clamp for a cylinder, wherein the lead wire clamp is fixed in a line direction of the lead wire (6).