JP2022089215A - Cable detachment prevention mechanism - Google Patents

Abstract

To provide a cable detachment prevention mechanism which can easily add afterward a detachment prevention mechanism to a cable that does not have detachment prevention means, without changing the structure or performing large-scale processing.SOLUTION: A cable detachment prevention mechanism is used to fix a cable to a device-side connector provided on a device body, with a connector portion engaged therewith. The cable detachment prevention mechanism has at least two structures each including: a stopper which presses the connector portion of the cable, with the connector portion of the cable engaged with the device-side connector; a slide guide which defines a moving direction of the stopper; and a spring which biases the stopper along the slide guide. The two structures are disposed in the vicinity of the device-side connector in such a manner that their stoppers face each other.SELECTED DRAWING: Figure 4

Description

The present invention relates to a cable retaining mechanism, and particularly to a cable retaining mechanism for a cable having no retaining structure.

USB cable (Universal Serial Bus Cable), HDMI cable (High-Definition Multimedia Interface Cable) (HDMI is a registered trademark), AC code (Alternating Current Code), etc. There are many cables that do not have a mechanism to prevent them from coming off. When using those cables, it is inconvenient in terms of specifications if they are pulled out due to an unexpected external factor.

For the purpose of preventing such a cable from coming off the device, there is a device that later adds a cable disconnection prevention structure to the device. Patent Document 1 relates to a cable disconnection prevention mechanism attached to a housing of an electronic device, and when a cable having a plug is connected to a receptacle of the electronic device, a step formed on the surface of the plug of the cable is formed. Engagement stoppers have been proposed. Patent Document 2 relates to a cable disconnection prevention structure, and proposes a housing for wrapping an insertion plug that prevents the insertion plug from slipping while the insertion plug is inserted into an outlet.

Japanese Unexamined Patent Publication No. 2013-149442 Japanese Unexamined Patent Publication No. 10-092511

However, the cable retaining mechanism of the background technique described above has the following problems.

The cable retaining mechanism of the background technology has a problem that it is difficult to realize the retaining mechanism regardless of the size of the cable. In the cable disconnection prevention mechanism of Patent Document 1, the stopper is engaged with the step formed on the surface of the plug of the cable to prevent the cable from disconnecting, so that it is difficult to handle cables of different sizes. Further, the cable disconnection prevention mechanism of Patent Document 1 has a problem that it is difficult to deal with a plug having a different shape such that a step is not formed in the plug of the cable. In the cable disconnection prevention structure of Patent Document 2, since the housing that wraps the insertion plug prevents the cable from disconnecting, it is necessary to design the housing to fit the size of the insertion plug and prepare the housing, and cables of different sizes are required. It is difficult to deal with.

In addition, the cable disconnection prevention mechanism of the background technology has a mechanism that voluntarily increases the fixing strength and actively suppresses unintended removal when unintended cable removal is about to occur. I couldn't see it.

In addition, in other background technologies, since the structure is simply fixed permanently with a dedicated resin part or the like, most of the mechanisms do not allow the cable to be inserted and removed after mounting. In addition, there were many cases in which the structure could not be removed without destroying the parts once the fixing was released, and it was difficult to reuse the fixing mechanism. Therefore, it is complicated because it is necessary to replace the fixing mechanism with a new part every time it is inserted or removed in the usage application where it is necessary to insert or remove it regularly, although it is not desired to remove it easily.

An object of the present invention is to provide a cable retaining mechanism capable of easily adding a retaining mechanism later without structural change or large-scale processing of a cable having no retaining mechanism. be.

In order to achieve the above object, the cable retaining mechanism according to the present invention is a cable retaining mechanism for fixing a cable with a connector portion fitted to a device-side connector provided in a device main body.
A stopper that presses the connector portion of the cable with the connector portion of the cable fitted to the device-side connector, a slide guide that defines the moving direction of the stopper, and a stopper along the slide guide. At least two structures including a spring for urging the stoppers are arranged near the device-side connector so that the stoppers face each other.

INDUSTRIAL APPLICABILITY The present invention can provide a cable retaining mechanism capable of easily adding a retaining mechanism later without structural change or large-scale processing of a cable having no retaining mechanism.

It is a side view of the cable retaining mechanism by 1st Embodiment of this invention. It is sectional drawing for demonstrating the cable retaining mechanism of FIG. It is sectional drawing for demonstrating the detailed structure of the cable retaining mechanism of FIG. It is sectional drawing for demonstrating the cable disconnection prevention function using the cable disconnection prevention mechanism of FIG. It is sectional drawing for demonstrating the cable disconnection prevention function using the cable disconnection prevention mechanism of FIG. It is sectional drawing for demonstrating the cable disconnection prevention function using the cable disconnection prevention mechanism of FIG. It is sectional drawing for demonstrating the cable disconnection prevention function using the cable disconnection prevention mechanism of FIG. It is sectional drawing for demonstrating the modification of the cable retaining mechanism by 1st Embodiment of this invention. It is sectional drawing for demonstrating the cable disconnection prevention mechanism by 2nd Embodiment of this invention. It is sectional drawing for demonstrating the modification of the cable retaining mechanism by 2nd Embodiment of this invention.

(Outline of Embodiment)
USB cable (Universal Serial Bus Cable), HDMI cable (High-Definition Multimedia Interface Cable) (HDMI is a registered trademark), AC code (Alternating Current Code), etc. There are many cables that do not have a mechanism to prevent them from coming off. When using these cables, if they are pulled out due to an unexpected external factor, they may be used for purposes that are inconvenient in terms of specifications. In the embodiment of the present invention, it is an object of the present invention to easily add a simple retaining mechanism to a cable having no retaining mechanism as described above without performing large-scale processing or the like.

An embodiment of the present invention is characterized in that it is possible to easily add a retaining mechanism without changing the structure of the connected device, device and cable, and it can be used regardless of the connector size of the cable. And.

At the same time, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the fixing force has a structure that spontaneously increases, and it is possible to suppress a situation in which the cable is unintentionally pulled out. Moreover, it also has the feature that it can be inserted and removed as usual by releasing the lock. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
First, the cable retaining mechanism according to the first embodiment of the present invention will be described. FIG. 1 is a side view of a cable retaining mechanism according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view for explaining the cable retaining mechanism of FIG. FIG. 3 is a cross-sectional view for explaining a detailed configuration of the cable retaining mechanism of FIG. 4 to 7 are cross-sectional views for explaining a cable retaining function using the cable retaining mechanism of FIG. 1.

(Explanation of configuration)
The cable disconnection prevention mechanism 1 of the present embodiment is a mechanism for preventing disconnection of the cable 2 inserted into and fitted to the device-side connector 3 provided in the device main body 4. Here, the cable 2 is a cable such as a USB cable, an HDMI cable (HDMI is a registered trademark), and an AC cord, which do not have a retaining mechanism such as a latch or a screw fastening in the standard specifications at the time of mating.

As shown in FIG. 2, the cable retaining mechanism 1 of the present embodiment includes a stopper assembly 10, a main body housing 20, a slide mechanism 30, a main body fixing mechanism 40, and a double-sided tape for fixing the main body 50.

As shown in FIG. 3, the stopper assembly 10 includes a lever 11, a stopper 12, and a guide pin 13. The lever 11 is an operation unit when the operator of the cable retaining mechanism 1 moves the stopper assembly 10. The stopper 12 has a function of fixing the cable. The guide pin 13 has a function of guiding and controlling the movement of the stopper assembly 10 during the fixing release operation.

As shown in FIG. 3, the main body housing 20 includes a housing tip portion 21 and a housing base portion 22. The main body housing 20 has a function as a holding and strength component for each component constituting the cable retaining mechanism 1 of the present embodiment. The housing tip 21, the housing base 22, the slide mechanism 30, and the main body fixing mechanism 40 have an integrated structure.

As shown in FIG. 3, the slide mechanism 30 includes a spring 31 and a slide guide 32. The spring 31 is an elliptical compression spring and has a function of pressing the stopper assembly 10 during the fixing operation of the cable 2 or the like. The slide guide 32 is formed as a concave groove in the housing base 22, and has a structure in which the guide pin 13 and the spring 31 are fitted and fitted. The slide guide 32 has a function of guiding and suppressing the operation direction when the stopper assembly 10 and the spring 31 operate, and controlling the slide guide 32 so that each slides and expands and contracts along the slide guide 32.

As shown in FIG. 3, the main body fixing mechanism 40 includes a fixing base 41, a guide bar 42, and a fixing screw 43. The fixing base 41 has a hole penetrating in the longitudinal direction, through which the guide bar 42 passes. The fixed base 41 can be moved along the guide bar 42, and the operator of the cable retaining mechanism 1 can freely move the position within the range of the length of the guide bar 42. There is. With this function, the position of the cable retaining mechanism 1 can be adjusted according to the size of the plug, and the cable retaining mechanism 1 of the present embodiment can handle cables of different sizes and shapes. It has become. The fixing screw 43 has a function of fixing the guide bar 42, and is tightened into a screw hole provided in the fixing base 41.

As shown in FIG. 3, the double-sided tape 50 for fixing the main body is attached to the fixing base 41. The double-sided tape 50 for fixing the main body has a function of fixing the cable to the target device and device for fixing the cable when the cable retaining mechanism 1 of the present embodiment is used.

(Explanation of operation)
Next, the operation of the cable retaining mechanism 1 of the present embodiment, that is, the retaining function using the cable retaining mechanism 1 of the present embodiment will be described. As shown in FIGS. 4 to 7, a device-side connector 3 is provided on the surface of the device body 4, and the case where the terminal of the cable 2 is inserted into the device-side connector 3 and fitted to the device-side connector 3 will be described. ..

In the present embodiment, as shown in FIGS. 4 to 7, two cable retaining mechanisms 1 of the present embodiment are arranged and used so that the stoppers 12 face each other. When using the cable retaining mechanism 1 of the present embodiment, the distance between the two cable retaining mechanisms 1 is adjusted according to the size of the connector portion of the cable 2 to be fixed, and the cable is attached to the main body fixing mechanism 40. Each is fixed to the guide bar 42 using the fixing screw 43. After this fixing, the double-sided tape 50 for fixing the main body attached to the fixing base 41 is used to fix the device to the main body 4.

When the cable 2 shown in FIG. 4 is not connected to the device-side connector 3 provided on the device main body 4, there is no load, and the stopper assembly 10 is moved to the housing tip 21 along the slide guide 32 by the spring 31. It is maintained in a pressed state.

In the fitting transition period between the cable 2 and the device-side connector 3 shown in FIG. 5, the stopper assembly 10 is pushed into the device body 4 side by the cable 2. At this time, since the guide pin 13 of FIG. 3 meshes with the slide guide 32, the stopper assembly 10 moves along the slide guide 32 of FIG. 3 and at the same time compresses the spring 31. A pair of stoppers 12 press both side surfaces of the connector portion of the cable 2.

In the fitting start period of the cable 2 and the device-side connector 3 shown in FIG. 6, the stopper assembly 10 is continuously pushed in the direction of the device main body 4. In the sliding operation at this time, since the cable 2 is opened in a V shape in the direction opposite to the cable 2, no force is applied in the direction of pressing the cable 2, so that the connection of the cable 2 is not hindered. .. Further, since the force by which the cable 2 presses the stopper assembly 10 and compresses the spring 31 is greater than the pushing force of the spring 31, the stopper assembly 10 is not pushed out.

In the fitting completion period of the cable 2 and the device-side connector 3 shown in FIG. 7, since the cable 2 and the device-side connector 3 are completely fitted, the stopper assembly 10 is pushed in the direction of the device main body 4. No force is applied. Therefore, the force that the stopper assembly 10 is pushed out by the spring 31 toward the housing tip portion 21 along the slide guide 32 is applied, and the force acts in the direction of pushing against the cable 2. As a result, a pressing force and friction are generated between the stopper 12 and the connector portion of the cable 2, and the cable 2 functions as a fixing and a retaining mechanism.

Further, when the slide guide 32 is pressed, the slide guide 32 enters inward toward the tip portion 21 of the housing. As a result, the force pushed out by the spring 31 is strengthened, and when the force is applied in the direction of pulling out the cable 2, the force is further applied so as to be pulled inward more strongly. It works like this. By the series of operations described above, the function of preventing and fixing the cable 2 is realized in the state where the device-side connector 3 of the device main body 4 and the cable 2 are fitted.

When releasing the fixing by the cable retaining mechanism 1 of the present embodiment, by pushing the lever 11 of the stopper assembly 10, it can be moved to the device main body 4 side along the slide guide 32, and the fixing of the cable 2 is released. Then, the cable 2 can be inserted and removed.

(Explanation of effect)
According to the cable retaining mechanism of the present embodiment, the following effects are obtained.

The first effect is the spontaneous holding force enhancing mechanism of the cable fixing and retaining mechanism. This is because the retaining mechanism acts actively to prevent the mechanism from pulling out when a force in the pulling direction is applied to the cable due to an external factor, and has the effect and action of suppressing unintended pulling out. Have.

The second effect is the improvement of connection reliability by preventing the cable from coming off. In the background technology, if it was found after the start of use that the cable that does not have a retaining or fixing mechanism would be loosened due to an unexpected external factor, there was no choice but to add permanent fixing and retaining. In the embodiment of the present invention, it is possible to realize a state in which it can be inserted and removed by a simple operation even after the fixing and the retaining member are added.

That is, according to the cable retaining mechanism 1 of the present embodiment, the retaining mechanism can be easily added later without structural change or large-scale processing of the cable having no retaining mechanism. Further, according to the cable retaining mechanism 1 of the present embodiment, it is possible to realize the retaining mechanism regardless of the size of the connector portion of the cable.

Further, according to the cable retaining mechanism 1 of the present embodiment, when the cable is to be pulled out while the lock by the retaining mechanism is enabled, the fixing force that the stopper 12 presses the connector portion of the cable 2 voluntarily increases. It has a structure to be used. That is, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the stopper 12 is the connector of the cable 2 depending on the urging by the spring 31 and the direction of the slide guides 32 forming a C shape in a pair. The fixing force that presses the part rises spontaneously. As a result, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the fixing force is spontaneously increased, so that the situation where the cable 2 is unintentionally pulled out can be suppressed. Moreover, if the lock of the retaining mechanism is released, the cable 2 can be inserted and removed as usual.

(Variation example of the first embodiment)
The cable retaining mechanism according to the first embodiment of the present invention is not limited to the above-mentioned structure, and various modifications can be made. FIG. 8 is a cross-sectional view for explaining a modified example of the cable retaining mechanism according to the first embodiment of the present invention.

The cable retaining mechanism of FIG. 8 can replace the function of the stopper assembly 10 of the cable retaining mechanism 1 shown in FIG. The cable retaining mechanism of FIG. 8 includes a stopper ball 14, a ball guide 33, and a ball stopper 34 in place of the lever 11, the stopper 12, and the guide pin 13 of the cable retaining mechanism shown in FIG. .. The stopper ball 14 is a spherical stopper that can move along the ball guide 33, and is urged by a spring 31 in the same manner as the cable retaining mechanism 1 of FIG. The movement of the stopper ball 14 in the direction of the device main body 4 is restricted by the ball stopper 34.

According to the cable retaining mechanism of FIG. 8, the retaining mechanism can be easily added later without structural change or large-scale processing of the cable having no retaining mechanism. Further, according to the cable retaining mechanism of FIG. 8, it is possible to realize the retaining mechanism regardless of the size of the connector portion of the cable.

Further, according to the cable retaining mechanism of FIG. 8, when the cable is pulled out while the locking of the retaining mechanism is enabled, the fixing force of the stopper ball 14 pressing the connector portion of the cable 2 voluntarily increases. It has a structure. That is, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the fixing force that the stopper ball 14 presses the connector portion of the cable 2 spontaneously due to the urging by the spring 31 and the direction of the slide guide 32. Ascend to. As a result, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the fixing force is spontaneously increased, so that the situation where the cable 2 is unintentionally pulled out can be suppressed. Moreover, if the lock of the retaining mechanism is released, the cable 2 can be inserted and removed as usual.

[Second Embodiment]
Next, the cable retaining mechanism according to the second embodiment of the present invention will be described. In the first embodiment described above, the fixing base 41 of the main body fixing mechanism 40 is fixed to the guide bar 42 by the fixing screw 43, but the cable retaining mechanism of the embodiment of the present invention is not limited to this. FIG. 9 is a cross-sectional view for explaining the cable retaining mechanism according to the second embodiment of the present invention. The same reference numbers will be assigned to the same elements as the cable retaining mechanism of the first embodiment, and detailed description thereof will be omitted.

The cable retaining mechanism of the present embodiment is a mechanism for preventing the cable 2 inserted into the device-side connector 3 provided in the device main body 4 from being pulled out, as in the first embodiment.

The cable retaining mechanism of the present embodiment includes a stopper assembly, a main body housing, a slide mechanism, a main body fixing mechanism, and a double-sided tape for fixing the main body, as in the first embodiment shown in FIG.

The stopper assembly of the present embodiment includes the lever 11, the stopper 12, and the guide pin 13 as in the first embodiment. The main body housing of the present embodiment includes the housing tip portion 21 and the housing base portion 22 as in the first embodiment. The slide mechanism of the present embodiment includes the spring 31 and the slide guide 32 as in the first embodiment.

The main body fixing mechanism of the present embodiment includes a fixing base 41, a guide bar 44 with a latch, and a latch 45. The fixing base 41 has a hole penetrating in the longitudinal direction, through which a guide bar 44 with a latch passes. The fixed base 41 can be moved along the latched guide bar 44, and the operator of the cable retaining mechanism can freely move the position within the range of the length of the latched guide bar 44. It has become. The latch 45 is fixed to the fixing base 41, and the engaging portion on the surface of the latch 45 engages with any one of a plurality of engaging grooves formed on the surface of the guide bar 44 with the latch, whereby the engaging portion of the fixing base 41 is fixed. The position in the longitudinal direction is fixed. As with the first embodiment, this function makes it possible for the cable retaining mechanism of the present embodiment to handle cables of different sizes.

(Explanation of effect)
According to the cable retaining mechanism of the present embodiment, as in the first embodiment, the retaining mechanism can be easily installed later without structural change or large-scale processing of the cable having no retaining mechanism. Can be added. Further, according to the cable retaining mechanism of the present embodiment, it is possible to realize the retaining mechanism regardless of the size of the connector portion of the cable, as in the first embodiment.

According to the cable retaining mechanism of the present embodiment, the position of the fixing base 41 in the longitudinal direction is fixed by the combination of the latch 45 and the guide bar 44 with the latch, and even for cables of different sizes, the present embodiment It is possible to deal with this with a cable retaining mechanism.

Further, according to the cable retaining mechanism of the present embodiment, when the cable is to be pulled out while the locking of the retaining mechanism is enabled, the fixing force of the stopper 12 pressing the connector portion of the cable 2 is spontaneously increased. It has a structure. That is, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the fixing force that the stopper 12 presses the connector portion of the cable 2 spontaneously due to the urging by the spring 31 and the direction of the slide guide 32. Rise. As a result, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the fixing force is spontaneously increased, so that the situation where the cable 2 is unintentionally pulled out can be suppressed. Moreover, if the lock of the retaining mechanism is released, the cable 2 can be inserted and removed as usual.

(Modified example of the second embodiment)
The cable retaining mechanism according to the second embodiment of the present invention is not limited to the above-mentioned structure, and various modifications can be made. It is also possible to apply the configuration of the modified example of the cable retaining mechanism according to the first embodiment, which has been described with reference to FIG. 8, to the cable retaining mechanism according to the second embodiment. FIG. 10 is a cross-sectional view for explaining a modified example of the cable retaining mechanism according to the second embodiment of the present invention.

The cable retaining mechanism of FIG. 10 can replace the function of the stopper assembly of the cable retaining mechanism shown in FIG. The cable retaining mechanism of FIG. 10 includes a stopper ball 14, a ball guide 33, and a ball stopper 34 in place of the lever 11, the stopper 12, and the guide pin 13 of the cable retaining mechanism shown in FIG. .. The stopper ball 14 is a spherical stopper that can move along the ball guide 33, and is urged by a spring 31 in the same manner as the cable retaining mechanism of FIG. The movement of the stopper ball 14 to the device main body 4 is restricted by the ball stopper 34.

According to the cable retaining mechanism of FIG. 10, the retaining mechanism can be easily added later without structural change or large-scale processing of the cable having no retaining mechanism. Further, according to the cable retaining mechanism of FIG. 10, it is possible to realize the retaining mechanism regardless of the size of the connector portion of the cable.

According to the cable retaining mechanism of FIG. 10, the position of the fixing base 41 in the longitudinal direction is fixed by the combination of the latch 45 and the guide bar 44 with the latch. This makes it possible for the cable retaining mechanism of the present embodiment to handle cables of different sizes.

Further, according to the cable retaining mechanism of FIG. 10, when the cable is to be removed while the locking of the retaining mechanism is enabled, the stopper ball 14 is the connector portion of the cable 2, as in the modified example of the first embodiment. It has a structure in which the fixing force for pressing is spontaneously increased. That is, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the fixing force that the stopper ball 14 presses the connector portion of the cable 2 spontaneously due to the urging by the spring 31 and the direction of the slide guide 32. Ascend to. As a result, when the cable is to be pulled out while the lock of the retaining mechanism is enabled, the fixing force is spontaneously increased, so that the situation where the cable 2 is unintentionally pulled out can be suppressed. Moreover, if the lock of the retaining mechanism is released, the cable 2 can be inserted and removed as usual.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited thereto. In the description of the above-described embodiment, two cable retaining mechanisms are arranged and used so that the stoppers 12 face each other. However, the number of the cables to be arranged is not limited to two, and the stoppers 12 are arranged so as to face each other. A total of four sets of two may be arranged and used. It goes without saying that various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention.

10 Stopper assembly 11 Lever 12 Stopper 13 Guide pin 14 Stopper ball 20 Main body housing 21 Housing tip 22 Housing base 30 Slide mechanism 31 Spring 32 Slide guide 33 Ball guide 40 Main body fixing mechanism 41 Fixed base 42 Guide bar 43 Fixing screw 44 With latch Guide bar

Claims (5)

It is a cable retaining mechanism that fixes the cable with the connector part fitted to the connector on the device side provided in the main body of the device.
A stopper that presses the connector portion of the cable with the connector portion of the cable fitted to the device-side connector, a slide guide that defines the moving direction of the stopper, and the stopper along the slide guide. At least two structures including a spring for urging the stoppers are arranged near the device-side connector so that the stoppers face each other.
Cable disconnection prevention mechanism. The slide guides of the arranged structure are arranged so as to move away from each other toward the main body of the apparatus.
The cable retaining mechanism according to claim 1. A body fixing mechanism for fixing the structure to the device body is further included.
The cable retaining mechanism according to claim 1 or 2. The body fixing mechanism includes a fixing base that is movable along a guide bar, and a fixing screw that fixes the guide bar and the fixing base.
The cable retaining mechanism according to claim 3. The body fixing mechanism includes a fixing base that is movable along the latched guide bar, and a latch that is fixed to the fixing base and is fixed by engaging with the latched guide bar.
The cable retaining mechanism according to claim 3.

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