Bending-resistant encoder wire

Abstract

The utility model provides a bending-resistant encoder cable, which comprises a cable body, a terminal assembly and a sleeve, the terminal assembly comprises a shell and a wiring terminal fixed with the shell, one end of the wiring terminal is positioned in the shell, and the other end of the wiring terminal extends out of the shell; one end of the cable body extends into the shell and is electrically connected with the wiring terminal; the sleeve and the shell are of a split structure, the cable body is sleeved with the sleeve, one end of the sleeve is fixed to the shell, and at least part of the sleeve is located outside the shell; a plurality of grooves are formed in the outer wall of the sleeve, are formed in the part, located outside the shell, of the sleeve, and are formed in the axial direction of the sleeve at intervals. The bending-resistant encoder wire can reduce or avoid the damage of the cable body caused by repeated bending in the long-term use process, prolongs the service life of the encoder wire, and reduces the use safety risk caused by the damage of the encoder wire.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable structure technical field especially is related to a kind of encoder wire of bending resistance. BACKGROUND

[0002] Encoder is the device that signal or data is arranged, converted into the signal form available to communication, transmission and storage. Encoder and equipment are mainly connected by wiring harness (i.e. encoder wire) for communication, and encoder wire plays the role of signal transmission.

[0003] As shown in Figure 1 The existing encoder wire generally includes cable body 1 (i.e. cable) and terminal assembly, and the terminal assembly includes shell 2 and terminal 3 (i.e. plug) fixed with shell 2, and one end of cable body 1 is inserted into shell 2 and electrically connected with terminal 3. At the same time, in order to seal the connection position of shell 2 and cable body 1, one side of shell 2 is generally provided with protruding part 200, which is annular structure and is sleeved on cable body 1. However, since protruding part 200 is generally an integral structure with shell 2, and shell 2 is generally made of hard materials such as plastic and hard rubber, so is protruding part 200. In the long-term use process, since cable body 1 needs to be bent repeatedly, and protruding part 200 is a hard structure and does not deform, cable body 1 is prone to damage at the joint position A of cable body 1 and protruding part 200 (i.e. when cable body 1 is bent, protruding part 200 does not bend, so the bending part of cable body 1 is the joint position A of cable body 1 and protruding part 200, and the shear force of cable body 1 is concentrated at the joint position A when it is bent, so cable body 1 is prone to damage at the joint position A), thereby reducing the service life of the encoder wire and affecting the safety of use. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of encoder wire of bending resistance, which can reduce or avoid the damage of cable body due to repeated bending in the long-term use process, improve the service life of the encoder wire, and reduce the use safety risk caused by the damage of the encoder wire.

[0005] The utility model provides a kind of encoder wire of bending resistance, including cable body, terminal assembly and sleeve, the terminal assembly includes shell and the terminal fixed with the shell, one end of the terminal is located in the shell, another end of the terminal is stretched to the shell outside;One end of the cable body is inserted into the shell and is electrically connected with the terminal;

[0006] The sleeve and the shell are in a split structure, the sleeve is sleeved on the cable body, one end of the sleeve is fixed with the shell, and at least part of the sleeve is located outside the shell; a plurality of grooves are arranged on the outer wall of the sleeve, the plurality of grooves are arranged on the part of the sleeve located outside the shell, and the plurality of grooves are arranged at intervals along the axial direction of the sleeve.

[0007] In an implementable manner, each groove is an annular structure surrounding one circumference of the sleeve.

[0008] In an implementable manner, the sleeve comprises a first part and a second part connected integrally, the first part is located outside the shell, the second part extends into the shell, and a plurality of grooves are arranged on the outer wall of the first part; the sleeve and the shell are fixed by clamping.

[0009] In an implementable manner, a clamping groove is arranged on the outer wall of the sleeve, the clamping groove is located at the joint position of the first part and the second part, the shell wall of the shell comprises a clamping wall close to one side of the first part, and the clamping wall is clamped in the clamping groove.

[0010] In an implementable manner, a through hole is arranged on the clamping wall, the cable body and the sleeve extend into the shell through the through hole; the width of the clamping wall is equal to the width of the clamping groove, and the inner wall of the through hole is tightly combined with the inner bottom wall of the clamping groove.

[0011] In an implementable manner, the shell comprises an upper shell and a lower shell arranged oppositely, the upper shell is fixedly connected with the lower shell; the clamping wall comprises an upper side wall and a lower side wall, the upper side wall is arranged on the upper shell, and the lower side wall is arranged on the lower shell; the through hole comprises a first semicircular hole arranged on the upper side wall and a second semicircular hole arranged on the lower side wall; the upper side wall and the lower side wall are clamped in the clamping groove.

[0012] In an implementable manner, a limiting portion is arranged on the inner wall of the shell, the end portion of the second part away from one end of the first part abuts against the limiting portion; a limiting groove is formed between the limiting portion and the clamping wall, and the second part is clamped in the limiting groove.

[0013] In an implementable manner, the outer diameter of the first part gradually decreases from the side close to the shell to the side away from the shell.

[0014] In an implementable manner, a sealant is arranged between the end portion of the sleeve away from the shell and the outer wall of the cable body.

[0015] In one possible implementation, the sleeve is made of rubber and the housing is made of plastic.

[0016] The bend-resistant encoder cable provided by this utility model features a sleeve on the cable body, which seals and protects the junction between the cable body and the housing. Multiple spaced grooves on the outer wall of the sleeve weaken its structural strength, making it easier to bend. Furthermore, since the sleeve and housing are separate structures, the sleeve can be made of a softer, more flexible material. This design allows the sleeve to bend along with the cable body when it bends, thus dispersing the shear force on the cable body during bending. The sleeve also provides support and protection for the cable body, reducing or preventing damage from repeated bending during long-term use, extending the encoder cable's lifespan, and minimizing safety risks associated with cable breakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an encoder line in the prior art.

[0018] Figure 2 This is a three-dimensional structural diagram of the bend-resistant encoder cable in an embodiment of this utility model.

[0019] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure from another direction.

[0020] Figure 4 for Figure 2 A cross-sectional schematic diagram.

[0021] Figure 5 This is a cross-sectional schematic diagram of the sleeve in an embodiment of this utility model.

[0022] Figure 6 This is a perspective view of the terminal assembly in an embodiment of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of a bend-resistant encoder cable in another embodiment of the present invention.

[0024] Figure 8 for Figure 7 A cross-sectional schematic diagram.

[0025] Figure 9 This is a cross-sectional schematic diagram of a bend-resistant encoder wire in another embodiment of the present invention. Detailed Implementation

[0026] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0027] The terms "first", "second", "third", "fourth" and the like in the description and claims of the present application, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

[0028] The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like (if any) in the description and claims of the present application are defined with reference to the positions of the structures in the drawings and the positions of the structures relative to each other, only to express the technical solutions clearly and conveniently. It should be understood that the use of directional terms should not limit the scope of the present application.

[0029] As shown in Figures 2 to 6 The present application embodiment provides a bending-resistant encoder wire, which comprises a cable body 1 (i.e. a cable), a terminal assembly M and a sleeve 4. The terminal assembly M comprises a shell 2 and a terminal 3 (i.e. a plug) fixed to the shell 2, and the cable body 1 and the terminal 3 are located on opposite sides of the shell 2. One end of the terminal 3 is located in the shell 2, and the other end of the terminal 3 extends out of the shell 2. The cable body 1 is located outside the shell 2, and one end of the cable body 1 extends into the shell 2 and is electrically connected to the terminal 3. Specifically, the cable body 1 comprises an insulating layer 11 (generally made of rubber) and a plurality of core wires 12 arranged in the insulating layer 11, and one end of each of the plurality of core wires 12 is electrically connected to the terminal 3.

[0030] The sleeve 4 and the shell 2 are a split structure (i.e. not integrally connected); the sleeve 4 is a hollow tubular structure (the cable body 1 is a cylindrical structure, so the sleeve 4 is generally a circular tubular structure), the sleeve 4 is sleeved on (outside) the cable body 1, the sleeve 4 is located at the joint position of the cable body 1 and the shell 2, one end of the sleeve 4 is fixed to the shell 2, and at least part of the sleeve 4 is located outside the shell 2. The outer wall of the sleeve 4 is provided with a plurality of grooves 41, the grooves 41 are formed by the outer wall of the sleeve 4 being recessed radially inward, the plurality of grooves 41 are arranged on the part of the sleeve 4 located outside the shell 2, and the plurality of grooves 41 are arranged at intervals along the axial direction of the sleeve 4 (i.e. the length direction of the cable body 1).

[0031] The utility model embodiment provides the encoder line of bending resistance, through setting sleeve 4 on cable body 1, sleeve 4 can play sealing effect and protection effect to the joint position of cable body 1 and shell 2. Through setting a plurality of interval arrangement's recess 41 on the outer wall of sleeve 4, recess 41 can weaken the structure strength of sleeve 4, make sleeve 4 bend more easily, and because sleeve 4 and shell 2 are split structure, sleeve 4 can adopt the soft material of bending more easily (not necessarily adopt the same hard material with shell 2), so setting, make cable body 1 bend, sleeve 4 can bend along with cable body 1, thereby dispersing the shearing force that cable body 1 bears when bending, and sleeve 4 can play the supporting protection effect to cable body 1, thereby reducing or avoiding the breakage of cable body 1 in the long-term use process due to repeated bending, improve the service life of encoder line, reduce the use safety risk due to the breakage of encoder line.

[0032] As an embodiment, the material of sleeve 4 and shell 2 is different, sleeve 4 adopts flexible material, and shell 2 adopts hard material. In the embodiment, sleeve 4 is rubber material (specifically, it can be soft rubber material), and shell 2 is plastic material (specifically, it can be hard plastic material). Of course, in other embodiments, sleeve 4 and shell 2 can adopt other materials.

[0033] As shown in Figure 2 and Figure 4 , as an embodiment, the inner diameter of sleeve 4 is the same as the outer diameter of cable body 1, or the inner diameter of sleeve 4 is slightly larger than the outer diameter of cable body 1, so that the inner wall of sleeve 4 and the outer wall of cable body 1 can be tightly fitted, improving the sealing between the two.

[0034] As shown in Figures 2 to 5 , as an embodiment, each recess 41 is an annular structure around the circumference of sleeve 4 (i.e. the recess 41 is an annular groove), so that sleeve 4 can bend more easily at the recess 41. Of course, in other embodiments, the recess 41 can have other shapes, for example, each recess 41 is composed of a plurality of discontinuous small grooves (not shown in the figure), i.e. a plurality of small grooves are arranged at intervals along the circumference of the sleeve 4.

[0035] As shown in Figures 2 to 5 , as an embodiment, a plurality of recesses 41 are arranged at equal intervals, i.e. the distance between each adjacent two recesses 41 is equal. Of course, in other embodiments, the distance between each adjacent two recesses 41 can also be unequal, for example, from the side close to the shell 2 to the side away from the shell 2, the distance between each adjacent two recesses 41 gradually decreases (i.e. the recesses 41 are arranged more and more densely), so that the end of the sleeve 4 away from the shell 2 can bend more easily, and the overall sleeve 4 has good structural strength.

[0036] In one implementation, all grooves 41 have the same depth. In other embodiments, the depths of the multiple grooves 41 may also be unequal.

[0037] In one embodiment, the depth of each groove 41 is 1mm to 10mm, and the distance between two adjacent grooves 41 is 2mm to 10mm.

[0038] like Figures 2 to 5 As shown, in one embodiment, the outer diameter of the first part 40A gradually decreases in the direction S from the side closer to the housing 2 toward the side farther from the housing 2, thereby making it easier to bend the end of the sleeve 4 away from the housing 2.

[0039] like Figures 2 to 6 As shown, in one embodiment, the sleeve 4 includes an integrally connected first part 40A and second part 40B (i.e., the first part 40A and the second part 40B are an integral structure). The first part 40A is located outside the housing 2, and the second part 40B extends into the housing 2. Multiple grooves 41 are provided on the outer wall of the first part 40A, and no grooves 41 are provided on the outer wall of the second part 40B. The sleeve 4 and the housing 2 are fixed by snap-fit.

[0040] like Figures 2 to 6 As shown, in one embodiment, the outer wall of the sleeve 4 is provided with a groove 42, which is located at the junction of the first part 40A and the second part 40B. The shell wall of the housing 2 includes a snap-fit ​​wall 21 near the first part 40A, which snaps into the groove 42, thereby achieving the snap-fit ​​fixation between the sleeve 4 and the housing 2.

[0041] like Figures 2 to 6 As shown, in one embodiment, the locking wall 21 is provided with a through hole 22, which is a circular hole. The cable body 1 and the sleeve 4 extend into the housing 2 through the through hole 22 (i.e., the cable body 1 and the sleeve 4 pass through the through hole 22). The width of the locking wall 21 is equal to the width of the locking groove 42 (i.e., the inner and outer surfaces of the locking wall 21 are tightly fitted with the inner sidewalls 422 on opposite sides of the locking groove 42, respectively). The inner wall of the through hole 22 is tightly fitted with the inner bottom wall 421 of the locking groove 42. This achieves a tight fit between the locking wall 21 and the locking groove 42, which not only improves the connection stability between the sleeve 4 and the housing 2, but also improves the sealing performance between the sleeve 4 and the housing 2.

[0042] like Figures 2 to 6As shown, as an embodiment, the shell 2 comprises an upper shell 20A and a lower shell 20B arranged oppositely, the upper shell 20A is above the lower shell 20B, and the upper shell 20A is fixedly connected with the lower shell 20B (the two can be fixed by screwing, clamping or other ways). The clamping wall 21 comprises an upper side wall 211 and a lower side wall 212, the upper side wall 211 is arranged on the upper shell 20A, and the lower side wall 212 is arranged on the lower shell 20B; the through hole 22 comprises a first semicircular hole 221 arranged on the upper side wall 211 and a second semicircular hole 222 arranged on the lower side wall 212 (the first semicircular hole 221 and the second semicircular hole 222 are both semicircular structures, and the through hole 22 is formed by the first semicircular hole 221 and the second semicircular hole 222); the upper side wall 211 and the lower side wall 212 are clamped in the clamping groove 42. In this way, the assembly can be facilitated.

[0043] Specifically, during assembly, the sleeve 4 can be sleeved on the cable body 1 first, and then the cable body 1 is connected with the terminal 3; then the upper shell 20A and the lower shell 20B are buckled from the upper and lower sides of the terminal 3 respectively, so that the upper side wall 211 of the upper shell 20A and the lower side wall 212 of the lower shell 20B are clamped in the clamping groove 42, and the upper shell 20A and the lower shell 20B are fixedly connected with the terminal 3, and then the upper shell 20A and the lower shell 20B are fixed (for example, by screwing), and the assembly is completed.

[0044] As shown in the figure, Figure 4 As an embodiment, the outer wall of the second part 40B abuts against the inner wall of the shell 2, thereby further improving the connection stability and sealing performance between the sleeve 4 and the shell 2.

[0045] As shown in the figure, Figure 9 As another embodiment, the inner wall of the shell 2 is provided with a limiting part 23 (specifically, the limiting part 23 is arranged on the upper shell 20A and the lower shell 20B), and the end of the second part 40B away from the first part 40A abuts against the limiting part 23; the limiting part 23 and the clamping wall 21 form a limiting groove 24, and the second part 40B is clamped in the limiting groove 24. In this way, the connection stability and sealing performance between the sleeve 4 and the shell 2 can be further improved.

[0046] As shown in the figure, Figure 7 and Figure 8 As another embodiment, the end of the sleeve 4 away from the shell 2 is provided with a sealing glue 5 between the outer wall of the cable body 1, and the sealing glue 5 can be epoxy resin glue, which is arranged around the outer wall of the cable body 1. By arranging the sealing glue 5, the sealing glue 5 not only can play a sealing role to prevent water vapor, dust and other external factors from entering the gap between the sleeve 4 and the cable body 1, but also can play a certain fixing role to the sleeve 4 and the cable body 1, preventing the sleeve 4 from slipping axially.

[0047] The utility model discloses a bending-resistant encoder wire, which is characterized in that a sleeve 4 is arranged on the cable body 1, the sleeve 4 can seal and protect the joint position of the cable body 1 and the shell 2. A plurality of grooves 41 are arranged on the outer wall of the sleeve 4, the grooves 41 can weaken the structural strength of the sleeve 4, so that the sleeve 4 is more likely to bend. Moreover, the sleeve 4 and the shell 2 are in a split structure, and the sleeve 4 can be made of soft material that is more likely to bend. In this way, when the cable body 1 is bent, the sleeve 4 can bend together with the cable body 1, so that the shearing force borne by the cable body 1 during bending is dispersed, and the sleeve 4 can support and protect the cable body 1, thereby reducing or avoiding damage of the cable body 1 caused by repeated bending during long-term use, improving the service life of the encoder wire, and reducing the use safety risk caused by damage of the encoder wire.

[0048] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered by the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A bend-resistant encoder wire, characterized by, The cable body, the terminal assembly and the sleeve, the terminal assembly comprises a shell and a terminal fixed with the shell, one end of the terminal is located in the shell, the other end of the terminal extends out of the shell, one end of the cable body extends into the shell and is electrically connected with the terminal; The sleeve is a separate structure from the shell, the sleeve is sleeved on the cable body, one end of the sleeve is fixed with the shell, at least part of the sleeve is located outside the shell, a plurality of grooves are provided on the outer wall of the sleeve, a plurality of grooves are provided on the part of the sleeve located outside the shell, and a plurality of grooves are arranged at intervals along the axial direction of the sleeve.

2. The bend-resistant encoder wire of claim 1, wherein, Each of the grooves is an annular structure surrounding one circumference of the sleeve.

3. The bend-resistant encoder wire of claim 1, wherein, The sleeve comprises a first part and a second part connected integrally, the first part is located outside the shell, the second part extends into the shell, and a plurality of grooves are provided on the outer wall of the first part; the sleeve and the shell are fixed by clamping.

4. The bend-resistant encoder wire of claim 3, wherein, The outer wall of the sleeve is provided with a clamping groove, the clamping groove is located at the joint position of the first part and the second part; the shell wall comprises a clamping wall close to one side of the first part, and the clamping wall is clamped in the clamping groove.

5. The bend-resistant encoder wire of claim 4, wherein, The clamping wall is provided with a through hole, the cable body and the sleeve extend into the shell through the through hole; the width of the clamping wall is equal to the width of the clamping groove, and the inner wall of the through hole is tightly combined with the inner bottom wall of the clamping groove.

6. The bend-resistant encoder wire of claim 5, wherein, The shell comprises an upper shell and a lower shell arranged oppositely, the upper shell is fixedly connected with the lower shell; the clamping wall comprises an upper side wall and a lower side wall, the upper side wall is arranged on the upper shell, and the lower side wall is arranged on the lower shell; the through hole comprises a first semicircular hole arranged on the upper side wall and a second semicircular hole arranged on the lower side wall; the upper side wall and the lower side wall are clamped in the clamping groove.

7. The bend-resistant encoder wire of claim 4, wherein, The inner wall of the shell is provided with a limiting portion, the end portion of the second part away from one end of the first part abuts against the limiting portion; a limiting groove is formed between the limiting portion and the clamping wall, and the second part is clamped in the limiting groove.

8. The bend-resistant encoder wire of claim 3, wherein, From the side close to the shell to the side away from the shell, the outer diameter of the first part gradually decreases.

9. The bend-resistant encoder wire of claim 1, wherein, The end portion of the sleeve away from the shell is provided with a sealant between the outer wall of the cable body.

10. The bend-insensitive encoder wire of any of claims 1-9, wherein, The sleeve is made of rubber material, and the shell is made of plastic material.

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