KR102121455B1 - Link connecting member of chain link and chain link having the same - Google Patents

Abstract

The present invention provides a link connecting member for a chain link, which includes a small number of parts, is easy to assemble, and is proper to be used in a work environment requiring cleanliness such as a clean room. According to the present invention, the link connecting member includes: a crossbar coupled to each of a pair of side links; and a cover coupled to the crossbar. The crossbar includes: a crossbar body having a first crossbar coupling portion and a second crossbar coupling portion provided at both ends thereof; a center support portion extending in the longitudinal direction of the crossbar body from the center of the crossbar body; and a plurality of front coupling grooves and a plurality of rear coupling grooves formed at both sides of the center support portion, respectively. The cover includes: a cover body having the length corresponding to the center support portion to cover the center support portion; a plurality of front coupling protrusions protruding from the cover body to be inserted into the plurality of front coupling grooves; a plurality of rear coupling protrusions protruding from the cover body to be inserted into the plurality of rear coupling grooves; and a plurality of cover posts protruding from the cover body to define a cable accommodation space provided between the two side links to allow cables to pass.

Description

Link connecting member for chain link and chain link having same{LINK CONNECTING MEMBER OF CHAIN LINK AND CHAIN LINK HAVING THE SAME}

The present invention relates to a chain link, and more particularly, to a link link member for a chain link connecting a pair of side links constituting a chain link of a cable chain for guiding various cables and a chain link having the same.

In general, robots, machine tools, food machinery, and factory automation systems are complexly connected with cables for electrical and control or various hydraulic and pneumatic cables, and when the cables are twisted or entangled in the operating part during operation, the cables are damaged or damaged. There is a risk of malfunction or safety accident due to short circuit. To avoid this problem, devices in which electrical or hydraulic cables or pneumatic cables are complexly connected have a cable chain to protect the cables.

Cable chains are also called cable bears or cable carriers, and support and guide cables such as electrical cables, hydraulic cables, or pneumatic cables, while at the same time risking damage, entanglement, or disconnection that can occur when cables are twisted or unfolded. It is a mechanism to protect the cable to prevent it. The cable chain may form a straight section in the cable path when used, or a curved section with a constant curvature.

Typically, a cable chain is a plurality of chain links are continuously coupled to protect and guide the cable in a straight section and a curved section. The chain link includes a pair of side links spaced apart from each other at regular intervals, and an upper frame and a lower frame connecting the upper and lower portions of the pair of side links, respectively. In the space provided by the pair of side links and the upper frame and the lower frame, cables to be protected are located and guided along a predetermined path.

However, the conventional cable chain has a complicated structure and a large number of parts, which makes assembly difficult.

In addition, in the conventional cable chain, when the device is operated, the cable is bent and then unfolded while the cable disposed therein continuously causes friction with the upper and lower frames connecting the pair of side links. , Due to the friction of these cables, the friction area is worn and dust is easily generated. As such, when the cable chain generates dust, it cannot be used in a work environment such as a clean room or in a work environment requiring thorough cleanliness such as food manufacturing.

Published Patent Publication No. 2018-0061129 (2018. 06. 07)

The present invention has been devised in view of the above-mentioned points, the number of parts is small and easy to assemble, and the link link member for a chain link joined for use in a work environment requiring cleanliness such as a clean room and a chain link having the same It is aimed at providing.

The link connecting member according to the present invention for solving the above object is a link connecting member for supporting a pair of side links spaced apart from each other provided in a chain link, respectively, in the pair of side links The first crossbar coupling portion and the second crossbar coupling portion to be coupled are crossbar bodies provided at both ends, a center support portion provided to extend in the longitudinal direction of the crossbar body in the center of the crossbar body, and both sides of the center support portion, respectively. A crossbar having a plurality of front engaging grooves and a plurality of rear engaging grooves formed; And a cover body having a length corresponding to the center support so as to cover the center support, a plurality of front engaging projections protruding from the cover body to be inserted into the plurality of front engaging grooves, and the plurality of rear engaging grooves. A plurality of rear coupling protrusions protruding from the cover body so as to be inserted therein, and a plurality of covers protruding from the cover body to partition a cable receiving space provided to allow the cable to pass between the two side links It includes; a cover having a pillar.

An end of the cover column may be provided with a column groove that opens outward.

The crossbar includes a front slot and a rear slot formed to be balanced with the center support so as to be symmetrical with respect to a longitudinal center line of the center support on both sides of the center support with the center support interposed therebetween, wherein the front slot The plurality of front engaging grooves are formed deeper than the front slot on the inside, and the plurality of rear engaging grooves are formed deeper than the rear slot on the inside of the rear slot, and the cover can be inserted into the front slot. It includes a front rib protruding from one side of the cover body so as to be, and a rear rib protruding from the other side of the cover body to be inserted into the rear slot, wherein the plurality of front engaging projections protrude from the front rib, The plurality of rear engaging projections may protrude from the rear rib.

The pair of front slots are symmetrically arranged with respect to the center line in the width direction of the crossbar body, and the pair of rear slots are symmetrically arranged with respect to the center line in the width direction of the crossbar body, and the pair of front slots A front center fixing portion is provided between, and a rear center fixing portion is provided between the pair of rear slots, and the front rib is provided with a pair to correspond to the pair of front slots, and the rear rib is the one. A pair is provided to correspond to a pair of rear slots, and a front center fixing groove into which the front center fixing portion is inserted is provided between the pair of front ribs, and the rear center fixing portion is inserted between the pair of rear ribs. A rear center fixing groove may be provided.

The cover body includes a center support that can cover the center support, and a concave recess formed in the center of the inner surface of the center support, and the crossbar is protruded in the center of the center support so that it can be inserted into the recess. It may include a protrusion.

On the other hand, the chain link according to the present invention for solving the above-described object, a chain link constituting a plurality of chains in turn, comprising: a pair of side links arranged to face each other and spaced apart; And a pair of link connecting members disposed to be spaced apart from each other so as to connect the pair of side links, wherein the link connecting member comprises: a first crossbar coupling unit coupled to the pair of side links, respectively; A crossbar body provided at both ends of the second crossbar coupling portion, a center support portion provided to extend in the longitudinal direction of the crossbar body at the center of the crossbar body, and a plurality of front coupling grooves formed on both sides of the center support portion, and A crossbar having a plurality of rear engaging grooves, a cover body having a length corresponding to the center support so as to cover the center support, and a plurality of fronts projecting from the cover body to be inserted into the plurality of front engaging grooves Coupling protrusions, a plurality of rear coupling protrusions protruding from the cover body to be inserted into the plurality of rear coupling grooves, and a cable receiving space provided to allow the cable to pass between the two side links. And a cover having a plurality of cover pillars protruding from the cover body.

Ends of the cover pillars of each of the pair of link connecting members may be in contact with each other to form a divider that divides the cable receiving space in a vertical direction.

An end of the cover column is provided with a column groove that is open to the outside, and in the middle of the divider, a pair of cover column columns forming the divider are connected to each other to form a fitting groove, and the fitting groove is provided with the cable. A separator capable of dividing the accommodation space in the horizontal direction may be inserted.

The link connecting member according to the present invention may be assembled by a simple fitting coupling method, after a crossbar connecting a pair of side links and a cover partially covering the crossbar to be in contact with a cable are separately injection molded separately. Therefore, assembly is easy.

In addition, in the link connecting member according to the present invention, the front rib and the rear rib provided in the cover are respectively inserted into the front slot and the rear slot of the crossbar, and the plurality of front engaging projections protruding from the front rib and the plurality of rear protruding from the rear rib The engaging projections are respectively inserted into a plurality of front engaging grooves extending from the front slot and a plurality of rear engaging grooves extending from the rear slot. Therefore, the crossbar and the cover form a multi-fitting coupling structure, and thus the coupling force between the crossbar and the cover is excellent, and the crossbar and the cover can maintain a stable coupling state without relative movement. In addition, even if the chain link moves, friction between the crossbar and the cover does not occur, and dust or foreign substances are not generated due to friction between the crossbar and the cover.

In addition, the chain link according to the present invention can prevent or minimize dust generation due to wear of parts. Accordingly, the chain link according to the present invention can be usefully applied to a cable chain used in a work environment such as a clean room or a work environment requiring thorough cleanliness such as food production.

In addition, in the chain link according to the present invention, a cover pillar provided in a pair of link connecting members may form a divider that divides the cable receiving space in the vertical direction. Therefore, compared to the prior art that requires a separate divider, the number of parts can be reduced, the assembly time is shortened, and the manufacturing cost can be lowered.

In addition, the chain link according to the present invention can be assembled by a simple method in which a separator that divides a cable receiving space in a horizontal direction is sandwiched between a pair of link connecting members, so that assembly is easy.

1 is a perspective view showing a chain link according to an embodiment of the present invention.
2 is a front view showing a chain link according to an embodiment of the present invention.
3 and 4 is an exploded view of a chain link according to an embodiment of the present invention.
5 and 6 is an exploded view of the link connecting member of the chain link according to an embodiment of the present invention.
7 is a plan view showing a crossbar and a cover that make up a link connecting member of a chain link according to an embodiment of the present invention.
8 is a cross-sectional view taken along line I-I of FIG. 3.
9 is a cross-sectional view taken along line II-II of FIG. 3.
10 is a cross-sectional view taken along line III-III of FIG. 3.
11 is a cross-sectional view showing a molding mold for injection-molding a cover of a link connecting member according to an embodiment of the present invention.
12 is a cross-sectional view showing a link connecting member according to another embodiment of the present invention.
13 is a front view showing a chain link according to another embodiment of the present invention.
14 is an exploded view of a chain link according to another embodiment of the present invention.

Hereinafter, a link connecting member for a chain link according to the present invention and a chain link having the same will be described in detail with reference to the drawings.

As shown in the figure, the chain link 100 according to an embodiment of the present invention is a pair of side links 200 and 250 and a pair of side links 200 and 250. It includes a link connecting member 300. The pair of side links 200 and 250 and the pair of link connecting members 300 form a cable receiving space 150 in which the cable 10 is accommodated. A plurality of chain links 100 may be sequentially connected through a joint member (not shown) to form a cable chain that guides the cable 10. Here, the cable 10 may be an electric cable, a hydraulic cable, or a pneumatic cable.

The pair of side links 200 and 250 are disposed to face each other to be spaced apart from side to side, and are connected by a pair of link connecting members 300. Each side link 200 and 250 may be sequentially connected to other ones through a joint member. The side link 200 and 250 is provided with a structure to which the link connecting member 300 can be coupled. That is, one side link 200 is provided with a support 210 and an insertion groove 220 for connecting the link connecting member 300, and the other side link 250 is connected to the link connecting member 300. For the fixture 260 is provided.

The link connecting member 300 is coupled to the two side links 200 and 250, which are arranged so that both ends thereof face each other, supports the two side links 200 and 250 to be spaced apart, and the cable receiving space 150 ) In contact with the cable 10 positioned to support the cable 10. The link connecting member 300 includes a crossbar 310 coupled to two side links 200 and 250, which are opposite to each other, and a cover 340 covering at least a portion of the outer surface of the crossbar 310. do.

The crossbar 310 includes a crossbar body 311 having crossbar coupling portions 312 and 313 at both ends, and a center support provided to extend in the longitudinal direction of the crossbar body 311 at the center of the crossbar body 311. 314. The crossbar 310 may be injection molded from a plastic material.

The crossbar coupling parts 312 and 313 are respectively coupled to the side links 200 and 250. The first crossbar coupling part 312 provided at one end of the crossbar body 311 includes a coupling protrusion 312a that can be coupled with one side link 200, and is provided at the other end of the crossbar body 311. The second crossbar coupling part 313 includes a fixing hook 313a that can be coupled with another side link 250.

The engaging projection 312a is inserted into the insertion groove 220 of one of the two side links 200 and 250. The engaging projection 312a may be formed in an arcuate shape to partially wrap the support 210 disposed adjacent to the insertion groove 220. That is, the engaging projection 312a may be fixed to the support 210 by partially wrapping the support 210 while being inserted into the insertion groove 220. The fixing hook 313a may be fixed to the side link 250 by engaging with a fixture 260 provided on the other side link 250 of the two side links 200 and 250.

As such, the crossbar 310 can be easily assembled to the two side links 200 and 250 by using the engaging projection 312a and the fixing hook 313a. That is, the coupling protrusion 312a of the crossbar 310 is first inserted into the insertion groove 220 of one side link 200, and the fixing hook 313a is engaged with the fixture 260 of the other side link 250. By this, the assembly of the chain link 100 can be easily made.

The center support 314 of the crossbar 310 protrudes from the crossbar body 311. The center support 314 is formed in a flat shape.

Front slots 319 and rear slots 321 are provided on both sides of the center support 314. The front slot 319 and the rear slot 321 are formed on the crossbar body 311 in balance with the center support 314. A pair of front slots 319 are symmetrically arranged with respect to the widthwise center line Cw1 of the crossbar body 311. In addition, a pair of rear slots 321 are symmetrically arranged based on the center line Cw1 in the width direction of the crossbar body 311. A front center fixing part 323 is provided between the pair of front slots 319, and a rear center fixing part 324 is provided between the pair of rear slots 321. The pair of front slots 319 and the front center fixing portion 323 and the pair of rear slots 321 and the rear center fixing portion 324 are based on the longitudinal center line Cl1 of the center support portion 314. They are symmetrical. That is, the pair of front slots 319 and the pair of rear slots 321 are respectively symmetrical, and the front center fixing part 323 and the rear center fixing part 324 are symmetrical to each other.

A plurality of front coupling grooves 326 are provided inside the front slot 319. The front engaging groove 326 is formed deeper than the front slot 319 and further extends from the front slot 319 into the crossbar 310.

A plurality of rear coupling grooves 330 are provided inside the rear slot 321. The rear engaging groove 330 is formed deeper than the rear slot 321 and further extends from the rear slot 321 into the crossbar 310.

The plurality of front coupling grooves 326 and the plurality of rear coupling grooves 330 may be symmetrically arranged based on the longitudinal center line Cl1 of the center support 314.

On the outer surface of the crossbar body 311, a plurality of crossbar grooves 334 that open outward are formed. By forming a plurality of crossbar grooves 334 on the outer surface of the crossbar body 311, the amount of material required for manufacturing the crossbar body 311 can be reduced, and the weight of the crossbar body 311 can be reduced. In addition, by forming a plurality of crossbar grooves 334 on the outer surface of the crossbar body 311, it is possible to reduce the problem that the crossbar body 311 is warped during injection molding of the crossbar body 311.

The plurality of crossbar grooves 334 are spaced apart at regular intervals in the longitudinal direction of the crossbar body 311 to form a column in the longitudinal direction of the crossbar body 311. Two columns of the crossbar groove 334 are provided to be symmetrical with respect to the longitudinal center line Cl1 of the crossbar body 311. Some of the crossbar grooves 334 of the plurality of crossbar grooves 334 are connected to the plurality of front coupling grooves 326, and the other of the plurality of crossbar grooves 334 are connected to the plurality of rear coupling grooves 330. The width of the crossbar groove 334 is greater than the width of the front engagement groove 326 or the width of the rear engagement groove 330.

As shown in FIG. 8, a front locking jaw 336 is provided in the crossbar groove 334 connected to the front coupling groove 326 among the plurality of crossbar grooves 334. The front engaging projection 336 contacts the front engaging projection 355 provided on the lid 340 for coupling between the crossbar 310 and the lid 340 so that the front engaging projection 355 is placed in the front engaging groove 326. It prevents them from being separated easily.

In addition, a rear locking jaw 338 is provided in the crossbar groove 334 connected to the rear coupling groove 330 among the plurality of crossbar grooves 334. The rear engaging projection 338 contacts the rear engaging projection 361 provided on the lid 340 for coupling between the crossbar 310 and the lid 340, so that the rear engaging projection 361 is placed in the front engaging groove 326. It prevents them from being separated easily.

Forming the front coupling groove 326 and the rear coupling groove 330 for coupling between the crossbar 310 and the cover 340 to be connected to the crossbar groove 334 opened in the opposite direction from them is advantageous in terms of difficulty. Do. That is, the front coupling groove 326 and the rear coupling groove 330 are connected to the crossbar groove 334, so that the front coupling protrusions 355 and rear are inserted into the front coupling groove 326 and the rear coupling groove 330, respectively. The engaging projection 361 may be prevented from being exposed to the outside of the crossbar 310. In addition, the front coupling groove 326 and the rear coupling groove 330 are connected to the crossbar groove 334, thereby making it easier to form the front locking jaw 336 or the rear locking jaw 338 in the crossbar 310. Can be.

The cover 340 is coupled to the crossbar 310 to cover at least a portion of the outer surface of the crossbar 310 to support the cable 10 in contact with the outer surface of the cable 10 disposed in the cable receiving space 150 .

The cover 340 is made of a crossbar 310 and a different material so as to be in contact with the cable 10 to support the cable 10 from being worn. The crossbar 310 is made of a relatively low-cost plastic material, and the cover 340 may be made of a material having a higher wear resistance and a small friction coefficient than the crossbar 310 such as engineering plastic. Since the cover 340 has a relatively small coefficient of friction, it is possible to reduce friction with the cable 10 and reduce wear due to friction as compared to the prior art. In addition, since the cover 340 has relatively excellent abrasion resistance, it is possible to reduce wear between parts and prevent dust generation due to wear when contacting the cable 10 compared to the prior art.

Since the cover 340 is made of a relatively expensive material, by taking a structure that covers only the smallest portion that the cable 10 can contact in the cable receiving space 150 among the outer surfaces of the crossbar 310 as shown , It can reduce manufacturing cost.

As a material used for manufacturing the cover 340, ultra high molecular weight polyethylene (hereinafter, referred to as “UHMW-PE”), which is called GUR, may be used. UHMW-PE (Ultra High Molecular weight polyethylene) is a high-density polyethylene having a weight average molecular weight of about 1 million or more, whereas most plastics have a molecular weight of 1 million or less, but have a relatively high molecular weight. UHMW-PE has better wear resistance than metal by Sand Slurry method, and is 2-3 times better than most engineering plastics compared to other engineering plastics. In addition, UHMW-PE has a friction coefficient close to 0, and among plastics, it has the best impact resistance. In addition, UHMW-PE has excellent sliding properties, excellent cold and low temperature impact resistance, excellent chemical resistance and electrical insulation, non-toxicity, and low hardness. Therefore, the cover 340 made of UHMW-PE can very stably support the cable 10 without causing wear, and can safely protect the cable 10 from being worn.

In addition, engineering plastics such as PC (PolyCarbonate), PA (PolyAmide), PBT (PolyButylene Terephthalate), POM (PolyOxyMethylene), PET (PolyEthylene Terephthalate), PCTFE (PolyChloroTrifluoro Ethylene), PBI (PolyBenzImidazole), etc. Can be used for manufacturing.

PC is transparent and magnetic, and has mechanical properties, flame resistance, cold resistance, and electrical properties. PC has excellent electrical properties, little change due to temperature and frequency, and small absorption, so it is not affected by moisture. In addition, PC has very high impact strength, excellent mechanical strength, good dimensional stability, and good heat resistance and insulation.

PA has excellent impact resistance, high surface strength, good self-lubricating property, excellent abrasion resistance, and excellent electrical and low-temperature characteristics.

PBT is an engineering plastic with excellent strength, heat resistance, and electrical insulation.

POM has very high oil resistance and high resistance to cyclic loads. POM has excellent mechanical properties, excellent fatigue resistance, excellent creep resistance and abrasion resistance, and excellent dimensional stability, thermal stability and electrical insulation.

PET has high mechanical strength and tensile strength, excellent dimensional stability, high hardness, small friction coefficient, excellent abrasion and friction resistance, and excellent chemical and electrical properties.

PCTFE has excellent chemical resistance, high hardness, and excellent self-lubricating properties and electrical insulation properties.

PBI has excellent heat resistance and abrasion resistance, very good friction resistance, and excellent dimensional stability and electrical insulation.

In addition, the cover 340 may be made of various engineering plastics or other various materials to have a higher wear resistance and a small coefficient of friction than the crossbar 310.

The cover 340 includes a cover body 341, a front rib 347 and a rear rib 349 protruding from one side and the other side of the cover body 341, and a plurality of fronts protruding from the front rib 347, respectively. The engaging projection 355, a plurality of rear engaging projections 361 protruding from the rear ribs 349, and a plurality of cover pillars 365 are provided.

The cover body 341 has a length corresponding to the center support 314 so as to cover the center support 314 of the crossbar 310. The cover body 341 includes a center support portion 342 of a flat shape that can face the center support portion 314. As described above, the cover body 341 may protrude from the crossbar body 311 and contact the cable 10 while covering the center support portion 314 of the crossbar 310 as a whole, so the cable 10 is minimized. It can be supported so as not to contact the crossbar (310).

A concave recess 345 is provided in the center of the inner surface of the center support 342. The recess 345 is a portion formed by the molding mold 400 during injection molding of the cover 340. During normal injection molding, since the molten resin is injected into the cavity through a gate provided inside the molding die, a protrusion formed by curing the molten resin remaining in the gate is formed on the outer surface of the injection material. In the case of the cover 340, when the protrusion is present on the outer surface, the cable 10 may hit the protrusion and the cable 10 may be damaged. In order to prevent such a problem, an injection molding method in which a protrusion is not generated is required, and the cover 340 manufactured by this injection molding method has a concave recess 345.

For the injection molding of the cover 340 having no protrusions, a molding mold 400 as shown in FIG. 11 may be used.

As illustrated, the molding mold 400 includes a first mold 410 and a second mold 420, and corresponds to a cover 340 between the first mold 410 and the second mold 420. A cavity 430 having a shape to be provided is provided. The second mold 420 is provided with a gate 440 connected to the cavity 430. By injecting and curing the molten resin into the cavity 430 through the gate 440, the cover 340 corresponding to the shape of the cavity 430 may be injection molded. In this process, a recess 345 may be formed on the inner surface of the cover 340 according to the structure of the molding die 400. The gate 440 is preferably provided in the central portion of the cavity 430 so that the symmetrical structure of the cover 340 can be stably injected, and for this reason, the concave portion 345 may also be provided in the center of the cover 340. have.

The front rib 347 is a pair on one side of the cover body 341 so as to be inserted into a pair of front slots 319 provided in the crossbar 310, the reference to the center line (Cw2) in the width direction of the cover body 341 Symmetrically. The rear rib 349 has a pair on the other side of the cover body 341 so as to be inserted into a pair of rear slots 321 provided in the crossbar 310, the width direction center line (Cw2) of the cover body 341 It is symmetrically arranged with reference. A front center fixing groove 351 is provided between the pair of front ribs 347, and a rear center fixing groove 353 is provided between the pair of rear ribs 349. The front center fixing portion 323 of the crossbar 310 may be inserted into the front center fixing groove 351, and the rear center fixing portion 324 of the crossbar 310 may be inserted into the rear center fixing groove 353. The pair of front ribs 347 and the rear ribs 349 and the front center fixing grooves 351 and the rear center fixing grooves 353 are symmetrical to each other with respect to the longitudinal center line Cl2 of the cover body 341. Achieve. That is, the pair of front ribs 347 and the pair of rear ribs 349 are symmetrical, and the front center fixing groove 351 and the rear center fixing groove 353 are symmetrical to each other.

The plurality of front engaging projections 355 protrude from the front rib 347 so that they can be inserted into the plurality of front engaging grooves 326 provided in the crossbar 310. The front engaging projection 355 includes a front engaging projection body 356 protruding from the front rib 347 and a front engaging projection hook 357 protruding outward from the end of the front engaging projection body 356. The front engaging projection hook 357 protrudes in a direction away from the rear engaging projection 361. The front engaging projection 355 is easily inserted in the front engaging groove 326 by the front engaging projection hook 357 being hooked to the front locking jaw 336 of the crossbar 310 in the state inserted in the front engaging groove 326. Cannot be separated.

The plurality of rear engaging projections 361 protrude from the rear rib 349 so that they can be inserted into the plurality of rear engaging grooves 330 provided in the crossbar 310. The rear engaging projection 361 includes a rear engaging projection body 362 protruding from the rear rib 349 and a rear engaging projection hook 363 protruding outward from an end of the rear engaging projection body 362. The rear engaging projection hook 363 protrudes in the opposite direction to the front engaging projection hook 357. That is, the rear engaging projection hook 363 protrudes in a direction away from the front engaging projection 355. The rear engaging projection 361 is easily inserted in the rear engaging groove 330 by the rear engaging projection hook 363 being caught by the rear locking jaw 338 of the crossbar 310 in the state inserted into the rear engaging groove 330. Cannot be separated. The plurality of rear engaging projections 361 may be symmetrically arranged with respect to the longitudinal center line Cl2 of the plurality of front engaging projections 355 and the cover body 341.

The plurality of cover pillars 365 are spaced apart in the longitudinal direction of the cover body 341. The gap between the cover pillars 365 is greater than the thickness of the cable 10 supported by the chain link 100. The cover pillar 365 may protrude from the cover body 341 to partition the cable receiving space 150 provided to allow the cable 10 to pass between the two side links 200 and 250.

The cover pillar 365 includes a pillar body 366 connected to the cover body 341, a pillar groove 367 provided at an end of the pillar body 366, and a pair of pillar protrusions 368. The pair of pillar protrusions 368 are disposed on both sides of the pillar groove 367 with the pillar groove 367 interposed therebetween.

1 and 2, the cover pillar 365 divides the cable receiving space 150 in the vertical direction by contacting the cover pillar 365 provided on the other link connecting member 300 in the vertical direction. To form. That is, the pair of link connecting members 300 are respectively coupled to the pair of side links 200 and 250 so that the ends of each cover pillar 365 contact each other, and are provided in each link connecting member 300 When the cover pillars 365 are in contact with each other, the cable receiving space 150 between the pair of side links 200 and 250 is divided into a plurality of spaces. And the cable 10 can be accommodated in each space.

Between the pair of cover pillars 365 forming the divider 370, the pillar grooves 367 of each cover pillar 365 are connected to thereby form a fitting groove 372. A separator capable of dividing the cable receiving space 150 in the horizontal direction may be inserted into the fitting groove 372.

The cover 340 may be assembled with the crossbar 310 by a simple fitting assembly method. When assembling the crossbar 310 and the cover 340, the front rib 347 and the rear rib 349 of the cover 340 are inserted into the front slot 319 and the rear slot 321 of the crossbar 310, respectively. It forms the primary fitting coupling structure. Then, the front center fixing groove 351 and the rear center fixing groove 353 of the cover 340 are inserted into the front center fixing portion 323 and the rear center fixing portion 324 of the crossbar 310 so that the secondary fitting coupling structure is achieved. Achieves. In addition, the front coupling protrusion 355 and the rear coupling protrusion 361 of the cover 340 are respectively inserted into the front coupling groove 326 and the rear coupling groove 330 of the crossbar 310 to form a third fitting coupling structure. . As such, the crossbar 310 and the cover 340 can be firmly coupled in a stably engaged state by forming a multi-fit coupling structure.

As described above, the link connecting member 300 according to an embodiment of the present invention includes a crossbar 310 connecting a pair of side links 200 and a crossbar 310 so as to be in contact with the cable 10. After the cover 340 partially covered is separately injection molded, it can be assembled in a simple fitting manner. Therefore, assembly is easy.

In addition, the link connecting member 300 according to an embodiment of the present invention includes a front rib 347 and a rear rib 349 provided in the cover 340, the front slot 319 and the rear slot of the crossbar 310 ( 321), the front center fixing portion 323 and the rear center fixing portion 324 of the crossbar 310 are inserted into the front center fixing groove 351 and the rear center fixing groove 353 of the cover 340, respectively. do. In addition, a plurality of front engaging grooves 326, in which a plurality of front engaging projections 355 protruding from the front ribs 347 and a plurality of rear engaging projections 361 protruding from the rear ribs 349 extend from the front slot 319. ) And a plurality of rear coupling grooves 330 extending from the rear slot 321, respectively. Therefore, the crossbar 310 and the cover 340 form a multi-fitting coupling structure, so that the coupling force between the crossbar 310 and the cover 340 is excellent, and the crossbar 310 and the cover 340 are relatively non-moving and stable. It can maintain the bonding state. In addition, even if the chain link 100 moves, friction between the crossbar 310 and the cover 340 does not occur, and dust or foreign substances are not generated due to friction between the crossbar 310 and the cover 340.

In addition, in the link connecting member 300 according to an embodiment of the present invention, the front rib 347 and the rear rib 349 provided in the cover 340 are disposed symmetrically to each other, and the plurality of front ribs 347 And the rear ribs 349 are disposed symmetrically to each other, and the front center fixing portion 323 and the rear center fixing portion 324 provided in the crossbar 310 are disposed symmetrically to each other, thereby covering the crossbar 310 and the cover. It is easy to assemble the (340) liver, and the bonding strength between them is excellent.

In addition, the link connecting member 300 for a chain link according to an embodiment of the present invention is disposed by a cover 340 having a relatively high abrasion resistance and a small friction coefficient characteristic in the portion facing the cable 10, link connection The member 300 may support the cable 10 while minimizing friction with the cable 10. Therefore, it is possible to prevent or minimize the wear phenomenon due to friction with the cable 10, to prevent or minimize damage to the cable 10, and to prevent or minimize the occurrence of dust due to wear of the parts. Accordingly, the chain link 100 according to an embodiment of the present invention can be usefully applied to a cable chain used in a work environment such as a clean room or a work environment requiring thorough cleanliness such as food manufacturing.

In addition, in the chain link 100 according to an embodiment of the present invention, the cover column 365 provided on the pair of link connecting members 300 divides the cable receiving space 150 in the vertical direction (370). Can form. Therefore, it is possible to reduce the number of parts, shorten the assembly time, and lower the manufacturing cost compared to the prior art.

On the other hand, Figure 12 is a cross-sectional view showing a link connecting member according to another embodiment of the present invention.

As shown in the figure, the link connecting member 500 includes a crossbar 510 coupled to two side links 200, which are opposite at both ends, and a cover 340 covering at least a portion of the outer surface of the crossbar 510 ). The cover 340 is as described above.

The crossbar 510 includes a crossbar body 311 and a center support 314 provided to extend in the longitudinal direction of the crossbar body 311 in the center of the crossbar body 311. A protrusion 511 is protruded at the center of the center support 314. In addition, the specific configuration of the crossbar 510 is as described above.

When assembling the crossbar 510 and the cover 340, the link connecting member 500 has a protrusion 511 inserted into the recess 345 of the cover 340. Therefore, the bonding force between the crossbar 510 and the cover 340 may be further increased.

On the other hand, Figure 13 is a front view showing a chain link according to another embodiment of the present invention.

The chain link 600 illustrated in FIG. 13 includes a pair of side links 200 and 250, a pair of link connecting members 300 connecting the pair of side links 200 and 250, and a separator. 610. The side links 200 and 250 and the link connecting member 300 are as described above. The separator 610 is provided with a plurality of reduction portions 612, and separator grooves 611 are provided on both sides of each reduction portion 612.

The separator 610 is inserted into the fitting groove 372 of the divider 370 in which the reduction part 612 is formed by the cover pillar 365 of the link connecting member 300 and is coupled to the divider 370, and accommodates the cable The space 150 may be divided in a horizontal direction. When the reduction portion 612 of the separator 610 is inserted into the fitting groove 372 of the divider 370, the pillar protrusion 368 of the cover pillar 365 is inserted into the separator groove 611, thereby causing the separator 610 ) Can stably maintain a coupled state between the pair of cover pillars 365.

When assembling the chain link 100, the separator 610 is disposed between the pair of link connecting members 300 and the pair of link connecting members 300 is coupled to the pair of side links 200 and 250. By doing so, the separator 610 can be installed.

The present invention has been described as a preferred example, but the scope of the present invention is not limited to the form described and illustrated above.

For example, the number or arrangement of each of the front slot 319 and the rear slot 321 provided in the crossbar, the number or arrangement of each of the front center fixing portion 323 and the rear center fixing portion 324, front coupling The number or arrangement of each of the grooves 326 and the rear coupling grooves 330 is not limited to that shown and may be variously changed. And according to the structure of the crossbar, the front rib 347, the rear rib 349, the front center fixing groove 351, the rear center fixing groove 353, the front engaging projection 355, and the rear engaging projection provided on the cover ( 361) Each number or arrangement structure may be variously changed.

In addition, the specific structure, number, and arrangement structure of the cover pillar 365 provided in the cover 340 is not limited to that shown, and may be variously changed.

Above, the present invention has been shown and described in connection with a preferred embodiment for illustrating the principles of the present invention, but the present invention is not limited to the configuration and operation as described and described as such. Rather, those skilled in the art will appreciate that many changes and modifications to the present invention are possible without departing from the spirit and scope of the appended claims.

100, 600: Chain link 200, 250: Side link
300, 500: Link connecting member 310, 510: Cross bar
311: crossbar body 314: center support
319: Front slot 321: Rear slot
323: front center fixing part 324: rear center fixing part
326: front engaging groove 330: rear engaging groove
334: Crossbar groove 336: Front locking jaw
338: rear locking jaw 340: cover
341: cover body 342: center support
345: main part 347: front rib
349: rear rib 351: front center fixing groove
353: rear center fixing groove 355: front engaging projection
361: rear engaging projection 365: cover pillar
370: divider 610: separator

Claims (8)

In the link connecting member for supporting a pair of side links provided on the chain link to face each other to be spaced apart,
A crossbar body provided at both ends of a first crossbar coupling portion and a second crossbar coupling portion coupled to the pair of side links, and a center support portion provided to extend in the longitudinal direction of the crossbar body at the center of the crossbar body; , Cross bars having a plurality of front coupling grooves and a plurality of rear coupling grooves formed on both sides of the center support; And
A cover body having a length corresponding to the center support so as to cover the center support, a plurality of front engaging projections protruding from the cover body to be inserted into the plurality of front engaging grooves, and the plurality of rear engaging grooves A plurality of rear coupling protrusions protruding from the cover body to be inserted, and a plurality of cover pillars protruding from the cover body so as to partition a cable receiving space provided to allow a cable to pass between the two side links. Cover provided; includes,
The crossbar includes a front slot and a rear slot which are formed parallel to the center support on both sides of the center support with the center support interposed therebetween, and wherein the plurality of front coupling grooves are located inside the front slot. It is formed deeper, the plurality of rear engaging grooves are formed deeper than the rear slot inside the rear slot,
The cover includes a front rib protruding from one side of the cover body to be inserted into the front slot, and a rear rib protruding from the other side of the cover body to be inserted into the rear slot. Link connecting member, characterized in that the front engaging projection protrudes from the front rib, and the plurality of rear engaging projections protrude from the rear rib.
According to claim 1,
Link connection member, characterized in that the end of the cover column is provided with a column groove that is open to the outside.
delete According to claim 1,
The front slot is a pair of symmetrically arranged with respect to the center line in the width direction of the crossbar body,
The rear slot is a pair of symmetrically arranged with respect to the center line in the width direction of the crossbar body,
A front center fixing part is provided between the pair of front slots,
A rear center fixing part is provided between the pair of rear slots,
The front rib is provided with a pair to correspond to the pair of front slots,
The rear rib is provided with a pair to correspond to the pair of rear slots,
A front center fixing groove into which the front center fixing portion is inserted is provided between the pair of front ribs,
A link connecting member comprising a rear center fixing groove into which the rear center fixing portion is inserted between the pair of rear ribs.
According to claim 1,
The cover body includes a center support that can cover the center support, and a concave recess formed in the center of the inner surface of the center support,
The cross bar is a link connecting member, characterized in that it comprises a protrusion provided in the center of the center support so that it can be inserted into the recess.
In the chain links that are connected in sequence to form a cable chain,
A pair of side links arranged to be spaced apart from each other; And
Includes; a pair of link connecting member disposed to be spaced apart from each other to connect the pair of side links;
The link connecting member,
A crossbar body provided at both ends of a first crossbar coupling portion and a second crossbar coupling portion coupled to the pair of side links, and a center support portion provided to extend in the longitudinal direction of the crossbar body at the center of the crossbar body; , Cross bars having a plurality of front coupling grooves and a plurality of rear coupling grooves formed on both sides of the center support,
A cover body having a length corresponding to the center support so as to cover the center support, a plurality of front engaging projections protruding from the cover body to be inserted into the plurality of front engaging grooves, and the plurality of rear engaging grooves A plurality of rear coupling protrusions protruding from the cover body to be inserted, and a plurality of cover pillars protruding from the cover body to partition a cable receiving space provided to allow the cable to pass between the two side links. It includes a cover having a,
The crossbar includes a front slot and a rear slot which are formed parallel to the center support on both sides of the center support with the center support interposed therebetween, and wherein the plurality of front coupling grooves are located inside the front slot. It is formed deeper, the plurality of rear engaging grooves are formed deeper than the rear slot inside the rear slot,
The cover includes a front rib protruding from one side of the cover body to be inserted into the front slot, and a rear rib protruding from the other side of the cover body to be inserted into the rear slot. Chain link characterized in that the front engaging projection protrudes from the front rib, and the plurality of rear engaging projections protrude from the rear rib.
The method of claim 6,
Chain link, characterized in that the ends of the cover pillars of each of the pair of link connecting members are in contact with each other to form a divider that divides the cable receiving space in the vertical direction.
The method of claim 7,
At the end of the cover pillar, a pillar groove that is opened to the outside is provided,
In the middle of the divider, a pillar groove of each of a pair of cover pillars forming the divider is connected to form a fitting groove, and a separator capable of dividing the cable receiving space in a horizontal direction is inserted into the fitting groove. Chain link made.

Images