CN220896234U - Cable clamp - Google Patents

Abstract

The utility model discloses a cable clamp, which comprises a cable clamp body and a sealing sleeve connected with the cable clamp body, wherein the cable clamp body is provided with a cable fixing hole and a plurality of first elastic beams, the plurality of first elastic beams encircle the cable fixing hole, the first elastic beams are provided with elastic supporting parts and clamping parts, the clamping parts are arranged in a suspending way and are at least provided with clamping line bosses extending inwards along the radial direction of the cable fixing hole, the periphery of the cable clamp body is provided with a plurality of second elastic beams extending upwards in a protruding way, the second elastic beams are provided with clamping grooves, the sealing sleeve is elastic and is provided with a central sealing hole matched with a sealing cable, the central sealing hole corresponds to the cable fixing hole, so that the cable clamp integrating the existing cable clamp and sealing piece into a whole is realized, the internal connecting structure is simplified, the installation or assembly of subsequent finished products is facilitated, the cable is matched with various cables through elastic clamping, and the circumferential sealing of the cable is considered.

Description

Cable clamp

Technical Field

The utility model relates to the technical field of electric connectors, in particular to a cable clamp.

Background

The cable clamp is a commonly used clamping structure for connecting and fixing an electric connector and a cable, and has the main effects of preventing the cable from being pulled out of the electric connector under the action of external force, and comprises a wire clamp for clamping and fixing the cable, a sealing element for matching and sealing the cable and a tail clamp for respectively fixing the wire clamp and the sealing element, wherein the general installation procedures are as follows: and sequentially assembling the wire clamp and the sealing element on the tail clamp to complete the assembly of the cable clamp.

In the assembly process of the tail clamp and the sealing element of the existing cable clamp, assembly deviation is easy to occur, and sealing between the sealing element and the cable is not tight due to loosening of fixation between the sealing element and the tail clamp.

In addition, the wire clamp, the sealing element and the tail clamp of the existing cable clamp are all independent parts, and the connecting structure between the parts is complex and is not beneficial to assembly.

Disclosure of utility model

Therefore, the present utility model has been made to solve the above-mentioned problems, and it is an object of the present utility model to provide a cable clamp which simplifies an internal connection structure and prevents the cable from being pulled out by accident by elastically clamping the cable while ensuring a good sealing effect.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

A cable clamp comprising a cable clamp body and a sealing sleeve connected to the cable clamp body; the cable clamp body is provided with a cable fixing hole penetrating up and down and a plurality of first elastic beams, and the plurality of first elastic beams encircle the cable fixing hole; the first elastic beam is provided with an elastic supporting part and a clamping part connected with the elastic supporting part, and the clamping part is arranged in a suspending way and is at least provided with a clamping line boss extending inwards along the radial direction of the cable fixing hole; the periphery of the cable clamp body is provided with a plurality of second elastic beams which extend upwards in a protruding mode, and the second elastic beams are provided with clamping grooves; the sealing sleeve is elastic and is provided with a central sealing hole for cooperatively sealing the cable, and the central sealing hole corresponds to the cable fixing hole.

Furthermore, the sealing sleeve and the cable clamp body are integrally connected through integral injection molding.

Furthermore, the sealing sleeve and the cable clamp body are preassembled to form an integrated cable clamp structure.

Further, the elastic supporting portion is a linear arm extending along the axial direction of the cable fixing hole, the first end of the elastic supporting portion is fixedly connected with the inner wall of the cable fixing hole, and the clamping portion is connected with the tail end of the elastic supporting portion, so that the first elastic beam forms a T-shaped structure.

Further, the sealing sleeve also comprises a shell, wherein the outer peripheral surface of the sealing sleeve is in sealing fit with the inner wall of the shell; the inner wall of the shell is provided with a limiting step, and the upper end of the cable clamp body is abutted to the limiting step.

Further, the peripheral wall of the cable fixing hole is provided with a yielding groove which is arranged in a penetrating manner; the clamping part is also provided with an extrusion boss which is formed by extending outwards along the radial direction of the cable fixing hole, and the extrusion boss penetrates through the abdication groove.

Furthermore, the inner side of the thread clamping boss and the outer side of the extrusion boss are both provided with inclined guide surfaces.

Further, the lower end of the sealing sleeve is provided with a plurality of positioning grooves positioned at the periphery of the central sealing hole, the upper end of the cable clamp body is also provided with a plurality of positioning bosses extending upwards in a protruding mode, and the positioning bosses are inserted into the positioning grooves.

Further, the lower end of the sealing sleeve is provided with a plurality of fixing convex columns extending downwards in a protruding mode, the cable clamp body is also provided with a plurality of mounting through holes positioned at the periphery of the cable fixing holes, and the fixing convex columns are arranged in the mounting through holes in a penetrating mode; the outer peripheral surface of the end part of the fixing convex column is provided with an abutting boss which extends outwards in a protruding mode, and the abutting boss penetrates through the mounting through hole and abuts against the cable clamp body.

Further, a plurality of annular first sealing lips are arranged on the hole wall in the central sealing hole of the sealing sleeve; and/or a plurality of annular second sealing lips are arranged on the outer peripheral surface of the sealing sleeve.

The technical scheme provided by the utility model has the following beneficial effects:

the existing wire clamp and the sealing element are integrated into a whole cable clamp, so that the internal connection structure of the cable clamp is simplified, and the installation or assembly of subsequent finished products is facilitated.

And when the cable assembly is at the in-process of cable clamp, through the interact power between cable and the first elastic beam of a plurality of to make the elastic support portion of the first elastic beam of a plurality of take place elastic deformation, and then adjust the mutual interval of the clamp line boss of the clamp portion of a plurality of first elastic beams, adjust the aperture of the cable clamp hole that the clamp line boss of a plurality of first elastic beams encloses to form promptly, in order to adapt to the external diameter of cable, and then realize elastic clamping cable, the cable assembly is in the central seal hole of seal cover simultaneously, in order to realize the circumference to the cable seal.

Drawings

FIG. 1 is a cross-sectional view of a cable clamp according to a first embodiment;

FIG. 2 is an enlarged schematic view of region A of FIG. 1;

FIG. 3 is a schematic view of a cable clamp body according to the first embodiment;

FIG. 4 is a cross-sectional view of the cable clamp body of the first embodiment;

Figure 5 shows a schematic view of a sealing sleeve in a first embodiment;

Fig. 6 is a cross-sectional view showing the cable assembled in the cable clamp in the first embodiment;

fig. 7 is a partial cross-sectional view showing the cable assembled in the cable clamp including the housing in the first embodiment;

FIG. 8 is an exploded view of a cable clamp incorporating a housing in accordance with the first embodiment;

FIG. 9 is a schematic view of the housing in the first embodiment;

fig. 10 is an external view of a cable clamp including a housing according to the first embodiment.

Detailed Description

For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

The utility model will now be further described with reference to the drawings and detailed description.

Example 1

Referring to fig. 1 to 6, a first embodiment provides a cable clamp, which comprises a cable clamp body 1 and a sealing sleeve 2 connected with the cable clamp body 1, wherein the cable clamp body 1 is provided with a cable fixing hole 12 penetrating up and down and two first elastic beams 11, the two first elastic beams 11 encircle the cable fixing hole 12, the first elastic beams 11 are provided with elastic supporting parts 111 and clamping parts 112 connected with the elastic supporting parts 111, the clamping parts 112 are suspended and provided with clamping line bosses 1121 extending inwards along the radial direction of the cable fixing hole 12, the periphery of the cable clamp body 1 is provided with two second elastic beams 16 extending upwards in a protruding mode, the second elastic beams 16 are provided with clamping grooves 161, the sealing sleeve 2 is elastic and is provided with a central sealing hole 21 for matching and sealing a cable 4, and the central sealing hole 21 corresponds to the cable fixing hole 12.

In this embodiment, since the sealing sleeve 2 has elasticity, and the inner diameter of the central sealing hole 21 of the sealing sleeve 2 is smaller than the outer diameter of the cable 4, when the inner diameter of the central sealing hole 21 of the sealing sleeve 2 is under the action of an external force (such as the extrusion force of the cable 4 to the sealing sleeve 2), the inner diameter of the central sealing hole 21 of the sealing sleeve 2 can be enlarged along with the expansion of the central sealing hole 21 of the sealing sleeve 2, so as to adjust the inner diameter of the central sealing hole 21 of the sealing sleeve 2, so as to closely fit the outer circumferential surface of the cable 4 in the central sealing hole 21, so as to achieve a good sealing effect.

When the cable 4 is assembled in the cable clamp, the elastic supporting portions 111 of the two first elastic beams 11 are elastically deformed by the interaction force between the cable 4 and the two first elastic beams 11, so that the distance between the clamping bosses 1121 of the clamping portions 112 of the two first elastic beams 11 is driven and adjusted, namely, the aperture of a cable clamping hole (not shown) formed by encircling the clamping bosses 1121 of the two first elastic beams 11 is adjusted, so as to adapt to the outer diameter of the cable 4, and further realize elastic clamping of the cable 4, and meanwhile, the cable 4 is assembled in the central sealing hole 21 of the sealing sleeve 2, so as to realize circumferential sealing of the cable 4.

Through fixing seal cover 2 and cable clamp body 1 together, seal cover 2 and cable clamp body 1 are through preassembling integral type cable clamp line structure promptly to realize integrating current fastener and sealing member into an holistic cable clamp, with the realization simplification cable clamp's internal connection structure, be favorable to follow-up finished product (like electric connector) installation or assembly, can simplify or optimize the installation step when finished product installation or assembly promptly, realize simultaneously sealing cable 4, in order to satisfy the waterproof requirement of finished product, also can compatible multicore scattered line structure's cable 4.

In another preferred embodiment, the elastic supporting portion 111 is a linear arm extending along the axial direction of the cable fixing hole 12, the first end of the elastic supporting portion 111 is fixedly connected to the inner wall of the cable fixing hole 12, and the clamping portion 112 is connected to the end of the elastic supporting portion 111, so that the first elastic beam 11 forms a T-shaped structure.

Specifically, the outer peripheral wall of the cable fixing hole 12 has a relief groove 13 penetrating therethrough, the clip portion 112 further has an extrusion boss 1122 extending outward in the radial direction of the cable fixing hole 12, and the extrusion boss 1122 penetrates through the relief groove 13.

In this embodiment, the upper and lower ends of the cable fixing hole 12 have an upper opening 121 and a lower opening 122, respectively, the upper end of the elastic supporting portion 111 is fixed on the hole wall located at the upper opening 121, the lower end of the elastic supporting portion 111 is close to the lower opening 122, and the wire clamping boss 1121 and the extrusion boss 1122 of the clamping portion 112 are both arc-shaped, further, the clamping portion 112 extends along the radial direction of the cable fixing hole 12, the elastic supporting portion 111 extends along the axial direction of the cable fixing hole 12, and the end of the elastic supporting portion 111 is connected at the middle of the clamping portion 112 to form the first elastic beam 11 with a T-shaped structure.

When the cable 4 sequentially passes through the central sealing hole 21 and the cable fixing hole 12 of the sealing sleeve 2, the elastic supporting part 111 has enough space for elastic deformation and the clamping part 112 has enough movable space through the through arranged relief groove 13, so that the aperture of the cable clamping hole is adjusted.

When the cable 4 is inserted into the cable fixing hole 12 from the upper opening 121 and abuts against the clamping boss 1121 of the clamping portion 112, the cable 4 presses the clamping boss 1121 of the clamping portion 112 outwards in the radial direction, so that the clamping boss 1121 of the clamping portion 112 is outwards opened, and the elastic supporting portion 111 is synchronously driven to be outwards bent (i.e. elastically deformed), so that the aperture of the cable clamping hole is enlarged, and the cable 4 can conveniently pass through the cable clamping hole at the moment (i.e. the cable clamping function in the prior art is realized).

After the cable 4 completes the insertion action, the cable 4 stops applying the extrusion force in the radial direction to the wire clamping boss 1121 of the clamping portion 112, and under the action of the self elastic force of the elastic supporting portion 111, the elastic supporting portion 111 drives the wire clamping boss 1121 of the clamping portion 112 to shrink inwards, so that the aperture of the cable clamping hole is reduced until the outer diameter size of the cable 4, and the cable 4 is extruded by the elastic force of the first elastic beam 11 at this time to form a certain pretightening force or holding force, so as to realize elastic clamping of the cable 4, and ensure good fixing of the cable 4.

As shown in fig. 7 to 10, in another preferred embodiment, the cable clamp further includes a housing 3, the outer circumferential surface of the sealing sleeve 2 is in sealing fit with the inner wall of the housing 3, a limiting step 32 is disposed on the inner wall of the housing 3, and the upper end of the cable clamp body 1 abuts against the limiting step 32.

In specific implementation, the outer peripheral surface of the housing 3 has two limiting bosses 31, the inner side of the wire clamping boss 1121 and the outer side of the extrusion boss 1122 have inclined guide surfaces (not shown), and when the cable clamp body 1 is assembled on the housing 3, the limiting bosses 31 are in one-to-one correspondence with the second elastic beams 16 and are clamped in the clamping grooves 161, and at this time, the outer peripheral surface of the sealing sleeve 2 is in sealing fit with the inner wall of the housing 3.

The inclined guide surface of the grip boss 1121 on the inner side facilitates the cable 4 to pass through and guide the elastic supporting portion 111 to gradually bend and open outwards, and the inclined guide surface of the pressing boss 1122 on the outer side facilitates the subsequent assembly of the housing 3 and the cable grip body 1.

When the cable clamp body 1 is assembled on the housing 3, the wall body of the housing 3 slides in along the inclined guide surface of the extrusion boss 1122, and the extrusion boss 1122 of the clamp 112 is propped against the wall body of the housing 3, so that the extrusion boss 1122 of the clamp 112 gradually drives the elastic support portion 111 to bend inwards, that is, the deformation amount of the elastic support portion 111 is continuously changed, the clamping boss 1121 of the synchronous clamp 112 moves correspondingly (such as continuously contracts inwards) accordingly, so as to further reduce the aperture of the cable clamping hole, so that a larger pre-tightening force or a clamping force extrusion is formed between the extrusion boss 1122 of the clamp 112 and the cable 4, further limiting the movement trend of the cable 4 in the axial direction is ensured, further improving the stability of clamping the cable 4 by the cable clamp, improving the reliability of the cable clamp, and simultaneously reducing the aperture of the cable clamping hole by a continuously changing mode, so as to prevent the clamping force of the cable clamp 112 from suddenly increasing, and further avoiding damage to the cable 4 by the clamp 112.

Specifically, the housing 3 has a receiving cavity (not shown) that runs through the housing, the outer peripheral walls of the two second elastic beams 16 and the cable fixing hole 12 are disposed at intervals and form a mounting groove (not shown), the lower end of the housing 3 is inserted into the mounting groove, and the limiting boss 31 is clamped in the clamping groove 161 of the second elastic beam 16, so as to fix the housing 3 and the cable clamp body 1 (i.e. realize the tail clamp function in the prior art).

Meanwhile, the upper hole wall 123 of the cable clamp body 1 positioned at the upper opening 121 abuts against the limiting step 32 of the shell 3, so that limiting and fixing of the cable clamp body 1 are realized.

Through fixing shell 3, seal cover 2 and cable clamp body 1 and forming the cable clamp of integral connection structure to realize integrating current fastener, tail clamp and sealing member into an holistic cable clamp, can simplify or optimize the installation step when the finished product is installed or is assembled, realize simultaneously sealing to cable 4, satisfy the waterproof requirement of finished product, also can compatible multicore scattered line structure's cable 4.

And through the cable clamp of integral connection structure, effectively reduce the assembly tolerance that adds up in the finished product assembly process and form to promote the yields of finished product, in order to realize saving manufacturing cost, and improve the quality stability of finished product.

In addition, the aperture of the cable clamping hole of the cable clamp is adaptively adjusted according to the outer diameter of the cable 4, so that the cable 4 with smaller outer diameter is downward compatible, the cable 4 with more types is matched, and the cable clamp is convenient for customers to use.

Of course, in other embodiments, the number of the limiting boss 31 and the second elastic beam 16 with the clamping groove 161 may be 3 or 4, which will not be described in detail herein.

In another preferred embodiment, the lower end of the sealing sleeve 2 is provided with 4 positioning grooves 22 located at the periphery of the central sealing hole 21, the upper end of the cable clamp body 1 is further provided with 4 positioning bosses 14 extending upwards in a protruding manner, and the positioning bosses 14 are inserted into the corresponding positioning grooves 22 one by one.

When the positioning boss 14 of the cable clamp body 1 is inserted into the positioning groove 22 of the sealing sleeve 2, the positioning boss 14 is limited by the positioning groove 22, so that the positioning boss 14 of the cable clamp body 1 limits the circumferential rotation of the sealing sleeve 2.

Further preferably, the lower end of the sealing sleeve 2 is provided with 4 fixing convex columns 23 extending downwards in a protruding manner, the cable clamp body 1 is further provided with 4 mounting through holes 15 positioned at the periphery of the cable fixing hole 12, the fixing convex columns 23 are penetratingly assembled in the mounting through holes 15, the peripheral surface of the end part of the fixing convex columns 23 is provided with an abutting boss 231 extending outwards in a protruding manner, and the abutting boss 231 penetrates through the mounting through holes 15 and abuts against the cable clamp body 1.

When the fixing boss 23 of the sealing sleeve 2 passes through the mounting through hole 15 of the cable clamp body 1 and the abutting boss 231 of the fixing boss 23 passes through the mounting through hole 15 and abuts against the cable clamp body 1, the fixing boss 23 of the sealing sleeve 2 is limited by the cable clamp body 1, so that the abutting boss 231 of the cable clamp body 1 limits the axial movement of the sealing sleeve 2, and the sealing sleeve 2 is further fixed on the cable clamp body 1, so that the tight fit between the sealing sleeve 2 and the cable 4 is ensured.

Further preferably, 3 annular first sealing lips 24 are provided on the hole wall in the central sealing hole 21 of the sealing sleeve 2, and 3 annular second sealing lips 25 are provided on the outer circumferential surface of the sealing sleeve 2.

The first sealing lip 24 of the sealing sleeve 2 in the central sealing hole 21 facilitates a tighter seal between the sealing sleeve 2 and the cable 4, while the second sealing lip 25 of the sealing sleeve 2 in the outer circumferential surface facilitates a tighter seal between the inner wall of the housing 3 (i.e. the sealing surface in the housing 3) and the sealing sleeve 2 (i.e. the sealing member function of the prior art).

Of course, in other embodiments, only 3 annular first sealing lips 24 are provided on the wall of the bore in the central sealing bore 21 of the sealing sleeve 2, or only 3 annular second sealing lips 25 are provided on the outer circumferential surface of the sealing sleeve 2.

The number of the first seal lips 24 on the wall of the hole in the center seal hole 21 and the number of the second seal lips 25 on the outer peripheral surface of the seal cartridge 2 are not limited to this, and the number of the first seal lips 24 or the second seal lips 25 may be 1, two or 4 or more, and the number of the specific first seal lips 24 (or the second seal lips 25) may be determined according to the structure of the seal cartridge 2.

Example two

The second embodiment provides a cable clip, and the second embodiment has substantially the same structure as the first embodiment, except that: the cable clamp body 1 is provided with 3 first elastic beams 11, and the 3 first elastic beams 11 encircle the cable fixing hole 12.

The elastic supporting portions 111 of the 3 first elastic beams 11 are elastically deformed under the action of external force, so that the distance between the clamping portions 112 of the 3 first elastic beams 11 is adjusted, namely the aperture of a cable clamping hole formed by encircling the clamping portions 112 of the 3 first elastic beams 11 is adjusted, so that the outer diameter of the cable 4 is suitable for clamping the cable 4, and meanwhile, the cable 4 is assembled in the central sealing hole 21 of the sealing sleeve 2, so that circumferential sealing of the cable 4 is realized.

Of course, in other embodiments, the number of the first elastic beams 11 may be 4, 5 or 6 or more, and the specific number of the first elastic beams 11 is determined according to the structure of the cable clamp body 1 and the cable 4.

Example III

Embodiment three provides a cable clamp, and embodiment three and embodiment one's structure are general the same, and the difference lies in: the sealing sleeve 2 and the cable clamp body 1 are integrally connected through integral injection molding.

In this embodiment, the sealing sleeve 2 is fixed on the cable clamp body 1 through an integral injection molding process to realize integral connection, so that the installation step during installation or assembly of a finished product can be simplified or optimized, the fixed position deviation between the sealing sleeve 2 and the cable clamp body 1 is further ensured to be within a specified range of the product, and meanwhile, the sealing of the cable 4 is realized, so that the waterproof requirement of the finished product is met, and the cable 4 with a multi-core scattered line structure can be compatible.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. A cable clamp, characterized in that: comprises a cable clamp body and a sealing sleeve connected with the cable clamp body;

The cable clamp body is provided with a cable fixing hole penetrating up and down and a plurality of first elastic beams, and the plurality of first elastic beams encircle the cable fixing hole;

The first elastic beam is provided with an elastic supporting part and a clamping part connected with the elastic supporting part, and the clamping part is arranged in a suspending way and is at least provided with a clamping line boss extending inwards along the radial direction of the cable fixing hole;

The periphery of the cable clamp body is provided with a plurality of second elastic beams which extend upwards in a protruding mode, and the second elastic beams are provided with clamping grooves;

The sealing sleeve is elastic and is provided with a central sealing hole for cooperatively sealing the cable, and the central sealing hole corresponds to the cable fixing hole.

2. The cable clamp according to claim 1, wherein: the sealing sleeve and the cable clamp body are integrally connected through integral injection molding.

3. The cable clamp according to claim 1, wherein: the sealing sleeve and the cable clamp body are preassembled to form an integrated cable clamp structure.

4. The cable clamp according to claim 1, wherein: the elastic support part is a linear arm extending along the axial direction of the cable fixing hole, the first end of the elastic support part is fixedly connected with the inner wall of the cable fixing hole, and the clamping part is connected with the tail end of the elastic support part so that the first elastic beam forms a T-shaped structure.

5. The cable clamp according to claim 1, wherein: the sealing sleeve is characterized by further comprising a shell, wherein the outer peripheral surface of the sealing sleeve is in sealing fit with the inner wall of the shell; the inner wall of the shell is provided with a limiting step, and the upper end of the cable clamp body is abutted to the limiting step.

6. The cable clamp according to claim 1, wherein: the outer peripheral wall of the cable fixing hole is provided with a yielding groove which is arranged in a penetrating manner; the clamping part is also provided with an extrusion boss which is formed by extending outwards along the radial direction of the cable fixing hole, and the extrusion boss penetrates through the abdication groove.

7. The cable clamp of claim 6, wherein: the inner side of the thread clamping boss and the outer side of the extrusion boss are both provided with inclined guide surfaces.

8. The cable clamp according to claim 1, wherein: the lower extreme of seal cover has a plurality of being located the constant head tank of center sealed hole periphery, the upper end of cable clamp body still has a plurality of protruding location bosss that extend that make progress, the location boss inserts and locates in the constant head tank.

9. The cable clamp according to claim 1 or 8, characterized in that: the lower end of the sealing sleeve is provided with a plurality of fixing convex columns extending downwards in a protruding mode, the cable clamp body is also provided with a plurality of mounting through holes positioned at the periphery of the cable fixing holes, and the fixing convex columns are arranged in the mounting through holes in a penetrating mode; the outer peripheral surface of the end part of the fixing convex column is provided with an abutting boss which extends outwards in a protruding mode, and the abutting boss penetrates through the mounting through hole and abuts against the cable clamp body.

10. The cable clamp according to claim 1, wherein: a plurality of annular first sealing lips are arranged on the hole wall in the central sealing hole of the sealing sleeve; and/or a plurality of annular second sealing lips are arranged on the outer peripheral surface of the sealing sleeve.